Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
  • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/1009—Interconnected mechanisms
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
  • H01H71/12—Automatic release mechanisms with or without manual release
  • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
  • H01H71/462—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts housed in a separate casing, juxtaposed to and having the same general contour as the main casing

Definitions

• the invention relates to a transmission shaft for an installation switching device according to the preamble of claim 1, as well as an installation switching device, in particular a nen motor protection switch, with a transmission shaft according to the invention according to claim 15.
• a generic transmission wave fulfills several functions in an installation switching device, for example in a motor protection switch.
• Undervoltage release or shunt release are accessories that are usually attached to a side of a motor protection switch, and cause in the manner of a forced release requested from a remote switching point opening of the contact points of the motor protection switch.
• a generic transmission wave transmits the movement or the signal of the armature to a short circuit signaling switch in order to trigger it and thereby to signal a short circuit optically and / or electrically.
• a short-circuit signaling switch is also an accessory device and is usually also mounted laterally on the housing of the motor-protective circuit-breaker. Additional devices such as a forced release or a signaling switch have corresponding driving elements, with which they are mechanically connected to the transmission shaft in the mounted state.
• the transmission shaft is usually stored in bearings in the housing of the motor protection switch, wherein the end faces of the transmission shaft are accessible from the outside for the engagement of the driving members of laterally mounted accessories.
• Such a transmission shaft with its function in a service switching device is shown for example in DE 199 35 62 A1, a generic service switching device is known for example from DE 42 13 729.
• the transmission shaft mechanically transmits several signals originating from different transmitters and directed to different receivers, always in common.
• transmission waves in a forced release of the switch via an attached undervoltage or shunt trip also the short-circuit detection switch.
• the transmission shaft comprises a first, inner part shaft which is rotatably supported in a second, outer part shaft such that the first part shaft can be pivoted independently of the second part shaft from the rest position to the release position when the second part shaft is in the Rest position is located, and that the second part of the wave in its pivoting from the rest to the release position, the first part wave entrains in the release position.
• the signal transmission from an attached forced release to the release lever of the derailleur can be done via the first part shaft.
• the signal transmission between the armature of the magnetic release and an attached short-circuit signaling switch could take place via the second partial wave. In this way it would be ensured that the short-circuit detection switch does not trip when the release lever is actuated by the forced release.
• a very advantageous embodiment of the invention provides that the first and second part-shaft are rotatably mounted about a common axis of rotation.
• the second part-wave may be designed in the manner of a channel, which is closed on one end face and open on the second end side, with an approximately semicircular cross-sectional contour.
• an interaction between the two can advantageously be realized such that the signals are transmitted from the first or the second partial wave via integrally formed levers or arms, and that at the first, in the second, Trough-shaped partial wave guided so to speak imbedded partial wave can protrude to the open side of the second partial wave without affecting the second partial wave and take with a pivoting of the first part wave.
• a very advantageous embodiment of the invention also provides that the first part shaft carries a circumferentially encircling bead or a circumferential collar, which is advantageously integrally formed, with or with the one in the inner peripheral surface of the second part shaft in the circumferential direction circumferential groove or groove is guided.
• the guide of the first in the second part of shaft can also be supported by a formed on the end face of the first part shaft pin which is rotatably mounted in an existing in the closed end face of the second part shaft opening.
• the coupling of the second partial wave to the armature of the electromagnetic release takes place in an advantageous embodiment in that the second partial shaft on the outer surface radially projecting armature arms carries, on which projections are formed, which presses the armature when tightening in case of short circuit, so that the transmission shaft is then pivoted from its rest to its release position.
• the signal transmission from the first partial wave to other components or components of the service switching device takes place in that the first part shaft carries a radially projecting release arm, with which it interacts with the release lever of the switch lock for unlatching when pivoting in the release position.
• the second part shaft can then advantageously carry on its wall a driving lever, which cooperates during pivoting of the second part shaft from its rest into its release position with a mounted in a corresponding position on the first part shaft counter lever, so that the first part wave then by the driving lever is also pivoted to the release position.
• a driving lever which cooperates during pivoting of the second part shaft from its rest into its release position with a mounted in a corresponding position on the first part shaft counter lever, so that the first part wave then by the driving lever is also pivoted to the release position.
• the release arm is also the counter lever.
• first and the second part shaft are manufactured as plastic injection molded parts. Then the manufacturing cost is low, and the required arms and levers can be molded in one piece with the injection process.
• a hollow shaft made of plastic, which is stiffened in its core with a metal pin.
• the first part-wave may also be a plastic-coated metal axis.
• the first part-wave is very easy to produce.
• the signal input from the outside to the second sub-wave is realized in that the second sub-wave includes a signaling device coupling point, which upon pivoting of the second part wave in the triggering position with the short-circuit signaling device for triggering a message together.
• the second part of the wave on its closed front side advantageously carries a recess into which a corresponding driving part of the short-circuit signaling device can intervene.
• the first partial wave may comprise an auxiliary trigger coupling point, via which the first partial wave can be pivoted into the release position by the auxiliary release.
• the first part of the shaft on its outer end face carry a recess into which a corresponding driving part of the auxiliary release can intervene for the purpose of mechanical coupling.
• FIG. 1 shows a transmission shaft according to the invention
• FIG. 2 shows the first partial wave of a transmission shaft according to the invention
• Figure 4 shows an insight into the lower shell of an opened motor protection switch with a built-in transmission shaft according to the invention.
• FIG. 1 shows an embodiment of a transmission shaft 1 according to the invention in its rest position.
• the transmission shaft 1 is composed of a first and a second partial shaft 2, 4.
• the first part-wave 2 is shown separately in FIG. 2 and the second part-wave 4 is shown separately in FIG.
• the second part shaft 4 is designed in the manner of a closed at one end face 6 and open at the second end face 8 channel with an approximately semicircular cross-sectional contour.
• the first part shaft 2 has the shape of an elongated cylinder and is in the channel-shaped inner contour of the second part shaft 4 is guided pivotably about a common axis of rotation with this and comprises thereof.
• the first part shaft 2 carries on its front side a bearing journal 10 with which it is mounted in a recess 64 in the closed end face 6 of the second part shaft 4.
• a circumferentially circumferential bead 12 is integrally formed on the first part-shaft 2 with which it circulates in a circumferential direction on the inner peripheral surface of the second part-shaft 4 Groove 14 is guided.
• the first and the second part shaft 2, 4 are produced as plastic injection molded parts, which allows a very cost-effective mass production.
• the first part shaft 2 should be so thin that it can easily slide in the circumferential direction within the second part of the shaft 4, and yet can transmit a high torque without them twisting in itself. Therefore, the first part shaft 2 is designed as a hollow shaft made of plastic, which is stiffened by an inner metal core.
• the metal core can be a metal pin in the simplest case, which was inserted inside the hollow shaft. The front end of the metal pin can slightly protrude beyond the end face of the hollow shaft and thus form the bearing pin 10.
• the first part-wave may also be made by molding a metal core, such as a metal shaft, with plastic.
• Figure 4 shows an insight into a sub-housing of an electrical installation switching device, here a motor protection switch 62 with three phases.
• the sub-housing 16 is bounded by two parallel side walls 18 and 20, and has partitions 22 and 24 through which chambers 26, 28, 30 are formed, in each of which an electromagnetic release 32, 48, 50 is located, as well as other components and Components that are not shown here, such as, for example, each a double arm comprehensive double contact point with appropriate contact pressure spring and contact lever guide, as well as arc extinguishing chambers with arc splitter stacks u.
• each a double arm comprehensive double contact point with appropriate contact pressure spring and contact lever guide, as well as arc extinguishing chambers with arc splitter stacks u.
• each have a bearing 14 and 34 are provided for the transmission shaft 1.
• Armature arms 36, 38, 40 are integrally formed on the second part-shaft 4 of the transmission shaft 1.
• projections 42, 44, 46 are formed on the arms 36, 38, 40.
• the extension 42 presses the armature of the electromagnetic see trigger 32 when it is triggered in the event of a short circuit.
• the armature of the trigger 48 presses in the case of triggering on the extension 44 and the armature of the trigger 50 on the extension 46.
• the second part shaft 4 is pivoted in the case of release clockwise from its rest position to its release position.
• the second part shaft 4 carries on its wall a driving lever 52 which cooperates during pivoting of the second part shaft 4 from its rest in its release position with a corresponding position on the first part shaft mounted counter lever, so that the first part shaft 2 then by the driving lever 52nd is also pivoted to the release position.
• the counter lever is designed as a release arm 54 protruding radially from the first partial shaft 2.
• the first part-shaft 2 interacts with the release lever of a locking mechanism-not shown here-for unlocking and thus permanent opening of the contact point.
• the pivoting movement of the second part-shaft 4 is transmitted at its closed end 6 via a recess 56 mounted there to the driving element of a laterally mounted short-circuit signaling switch, not shown here, so that it triggers and can optically indicate the short circuit.
• the first part shaft 2 comprises an auxiliary release coupling point 60, via which it can be pivoted by a, not shown here, auxiliary release or forced release in the release position.
• the first part shaft 2 contributes to its outer end face 58 a recess 60 into which a corresponding driving part of the auxiliary release can intervene for the purpose of mechanical coupling.
• the release position of the auxiliary release the latter thus pivots the first part-shaft 2 in the clockwise direction and thus forcibly controlled from the outside, thus bringing it into the release position.
• the release arm 54 also interacts again with the release lever of the switch lock for permanent opening of the contact point.
• the second part shaft 4 is left in its rest position by the pivoting of the first part shaft 2 caused by the auxiliary release.
• the signal of the auxiliary release thus affects only the release lever of the switch lock, namely on the trigger arm 54 namely, but not on the short-circuit detection switch. Because the second part shaft 4 remains in its rest position, there is no pivoting of the connected to the closed end 6 of the second part shaft 4 recess 56 and thus no effect on the driving member of the short circuit signaling switch.

Landscapes

• Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
• Lock And Its Accessories (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
• Switches With Compound Operations (AREA)
• Load-Engaging Elements For Cranes (AREA)

Priority Applications (4)

Applications Claiming Priority (4)

Publications (2)

Family

ID=39809790

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Citations (7)

Family Cites Families (2)

• 2008
  • 2008-02-15 DE DE102008009198A patent/DE102008009198A1/de not_active Withdrawn
  • 2008-04-21 WO PCT/EP2008/003174 patent/WO2008131881A2/de active Application Filing
  • 2008-04-21 AT AT08749012T patent/ATE486361T1/de active
  • 2008-04-21 EP EP08749012A patent/EP2143123B1/de active Active
  • 2008-04-21 CN CN200880014063.5A patent/CN101689447B/zh active Active
  • 2008-04-21 DE DE502008001661T patent/DE502008001661D1/de active Active

Patent Citations (7)

Also Published As

Similar Documents

Legal Events