EP0066181B1 - Antriebsvorrichtung für einen Schalter - Google Patents

Antriebsvorrichtung für einen Schalter Download PDF

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Publication number
EP0066181B1
EP0066181B1 EP82104349A EP82104349A EP0066181B1 EP 0066181 B1 EP0066181 B1 EP 0066181B1 EP 82104349 A EP82104349 A EP 82104349A EP 82104349 A EP82104349 A EP 82104349A EP 0066181 B1 EP0066181 B1 EP 0066181B1
Authority
EP
European Patent Office
Prior art keywords
spring
straining
operating mechanism
main spring
mechanism according
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
Application number
EP82104349A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0066181A3 (en
EP0066181A2 (de
Inventor
Sven Dipl. Ing. Bachler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ASEA AB filed Critical ASEA AB
Publication of EP0066181A2 publication Critical patent/EP0066181A2/de
Publication of EP0066181A3 publication Critical patent/EP0066181A3/de
Application granted granted Critical
Publication of EP0066181B1 publication Critical patent/EP0066181B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members

Definitions

  • the present invention relates to a drive device according to the preamble of claim 1.
  • the drive device according to the invention is particularly suitable for manually operated load switches for low voltage (up to 1000 V nominal voltage), but can in principle also be used in other contexts.
  • Load switches of the aforementioned type are normally designed for so-called independent manual operation, which means that the speed of the contact movement when switching on and off and the operating sequence in the end position are independent of the force with which the handle is operated.
  • a spring mechanism is required for this, which stores the energy supplied via the handle and, when sufficient energy is stored, releases it for actuating the contacts.
  • the invention has for its object to develop a drive device of the type mentioned, in which the above-mentioned disadvantages of the known drive devices are eliminated.
  • the main element in the device according to the invention is a spring which is punched out of spring steel sheet and is loaded by forces lying in the sheet plane, that is to say in an edgewise manner.
  • the spring is subjected to a bending load and the loaded cross section has a constant width that is equal to the thickness of the sheet. Because the part is punched out or cut out of a sheet metal, the cross section can have a varying height and thus a constant bending stress, which enables optimal use of material and space.
  • the drive devices which are described below with reference to FIGS. 1 to 5, are provided for those load switches which have contact guides in the form of a carriage which moves in a straight line between its two end positions.
  • the spring mechanism belonging to the drive device is intended to transmit the actuating force, for example, from a rotatable actuating handle to a contact slide which moves in a straight line perpendicular to the axis of rotation of the handle.
  • FIGS. 1 to 3 have a U-shaped main spring 1, and two clamping arms 4, 5 are arranged between the free ends of the spring legs 2, 3.
  • these clamping arms are straight and rigid and, at one end, are connected in an articulated manner to the free end of each spring leg 2, 3. With their other ends, the clamping arms are rotatably mounted in bearing points 6, 7, which are fixedly arranged in the housing of the device.
  • the main spring 1 If the main spring 1 is shifted in its longitudinal direction (arrow direction A) from the one end position shown in FIG. 1a to the other end position shown in FIG. 1b, the legs 2, 3 become arms 4, 5 during the first part of the actuation movement pushed apart. When the arms have passed the dead point, the thighs can spring back as the spring continues to move forward, releasing the energy stored in it during the first part of the movement.
  • the Arms 4, 5 can be made longer. This can be done by forming the arms into an arc and arranging them to overlap, as can be seen in FIGS. 2a and 2b.
  • These arcuate arms can preferably consist of spring steel and be dimensioned so that they are subjected to high stress. They act as springs and work in series with the main spring 1 and thus contribute to the overall spring work.
  • the bearing points 6, 7 for the fixed end of the clamping arms are arranged in a rigid housing.
  • a fourth spring element can be introduced by mounting the fixed end of the arms in a spring 8 which is also U-shaped, as shown in FIGS. 3a and 3b.
  • the base portion of the spring 8 is fixed in the housing of the device.
  • Figures 4 and 5 show a drive device according to the principle shown in Figures 3a and 3b with a main spring 1, two spring arms 4, 5 and a fixed spring 8.
  • the device also contains a drive shaft 9 with a handle 10.
  • a primary arm 11 and a secondary arm 12 By a primary arm 11 and a secondary arm 12, the torque acting on the handle can be converted into a linearly acting driving force acting on the main spring 1.
  • the primary arm 11 is fixedly connected to the drive shaft 9 and has a slot 13 in which a roller 14 runs.
  • the roller 14 is in turn arranged on the secondary arm 12.
  • the secondary arm 12 is rotatable about a fulcrum 15 which is fixedly arranged in the housing or in the stand of the device and displaces the main spring 1 with the aid of two driver pins 16 and 17 mounted thereon Contact carriage 18 used.
  • FIGS. 6 and 7 show a drive device according to the invention for those load switches in which the contact guide moves in the axial direction of the actuating handle, that is to say perpendicular to the direction of movement of the embodiment described above.
  • the contact guide has two cams, which cooperate with two identical cams on a rotatable disc in such a way that the contact guide is displaced away from the disc when it makes a quarter turn.
  • the contact guide goes back under the action of the force of the contact springs.
  • FIGS. 6 and 7 show how such a spring mechanism can be produced with the aid of thin spring elements, all of which are cut out of sheet metal and in which the direction of the force acting on the sheet metal and the bending line of the deflection lie in the plane of the sheet metal.
  • the drive device shown in FIGS. 6 and 7 belongs to a load switch 19 which has a central drive shaft 20 on which an actuating handle, not shown, is mounted.
  • the mechanism contains a main spring 21, also called a center spring, two arc springs 22, 23 and two frame springs 24, 25.
  • the drive shaft 20 passes through a contoured hole 26 in the center of the center spring, whereby the torque is transmitted from the drive shaft to the center spring.
  • a contoured hole 26 in the center of the center spring, whereby the torque is transmitted from the drive shaft to the center spring.
  • the center spring has two spiral arms 31, 32 which form the resilient part. The suspension movement is essentially radial.
  • the two arc springs 22, 23 form two articulated arms which connect the center spring 21 to the frame springs 24, 25.
  • a pin in each connection point 33, 34, 35, 36 makes the connection articulated. The deformation of these spring members is done by increasing the distance between the end points of each articulated arm.
  • the two frame springs 24, 25 together form a fixed outer frame.
  • the deformation of these spring members takes place in that the distance between the articulation points 34, 36 is reduced.
  • the advantage of the spring mechanism described is that the mechanism is thin and therefore requires little space.
  • the fact that the springs are punched out ensures optimal stress along the entire length of the spring.
  • the spring elements can be used for other functions, e.g. Storage, control, arm function and driver function are assigned. This allows the number of parts of the mechanism to be kept small.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Springs (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Slide Switches (AREA)
  • Massaging Devices (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)
EP82104349A 1981-05-29 1982-05-18 Antriebsvorrichtung für einen Schalter Expired EP0066181B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8103407 1981-05-29
SE8103407A SE444487B (sv) 1981-05-29 1981-05-29 Manovermekanism for elkopplare

Publications (3)

Publication Number Publication Date
EP0066181A2 EP0066181A2 (de) 1982-12-08
EP0066181A3 EP0066181A3 (en) 1985-04-03
EP0066181B1 true EP0066181B1 (de) 1987-04-29

Family

ID=20343956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104349A Expired EP0066181B1 (de) 1981-05-29 1982-05-18 Antriebsvorrichtung für einen Schalter

Country Status (7)

Country Link
EP (1) EP0066181B1 (da)
AU (1) AU550905B2 (da)
DE (1) DE3276204D1 (da)
DK (1) DK154374C (da)
FI (1) FI76447C (da)
NO (1) NO158558C (da)
SE (1) SE444487B (da)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065918B (de) * 1959-09-24 Aktiebolaget Svenska Metallveiken, Västeräs (Schweden) Elektrischer Schalter
DE1075709B (de) * 1960-02-18 Aktiebolaget Svenska Metallver ken Vasteras (Schweden) Elektrischer Schalter
DE1091179B (de) * 1956-11-28 1960-10-20 Haegglund & Soener Ab Elektrischer Schnappschalter mit Kontaktbruecke
FR1344714A (fr) * 1963-01-18 1963-11-29 Westinghouse Air Brake Co Interrupteur électrique
GB1097429A (en) * 1964-04-24 1968-01-03 Svenska Elfab Ab Selfa A snap action mechanism especially for electrical switching devices
DK142007B (da) * 1978-02-22 1980-08-04 Mec Mekanisk Elek Sk Compagni Elektrisk omskifter med klikfjeder.

Also Published As

Publication number Publication date
DK154374B (da) 1988-11-07
FI821866A0 (fi) 1982-05-26
FI76447B (fi) 1988-06-30
SE444487B (sv) 1986-04-14
DK240782A (da) 1982-11-30
FI76447C (fi) 1988-10-10
NO158558C (no) 1988-09-28
AU550905B2 (en) 1986-04-10
DE3276204D1 (en) 1987-06-04
EP0066181A3 (en) 1985-04-03
EP0066181A2 (de) 1982-12-08
NO821774L (no) 1982-11-30
NO158558B (no) 1988-06-20
AU8419982A (en) 1982-12-02
DK154374C (da) 1989-04-10
SE8103407L (sv) 1982-11-30

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