EP1255263A2 - Selbstverriegelndes Relais für ADSL Anwendung - Google Patents

Selbstverriegelndes Relais für ADSL Anwendung Download PDF

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Publication number
EP1255263A2
EP1255263A2 EP02291096A EP02291096A EP1255263A2 EP 1255263 A2 EP1255263 A2 EP 1255263A2 EP 02291096 A EP02291096 A EP 02291096A EP 02291096 A EP02291096 A EP 02291096A EP 1255263 A2 EP1255263 A2 EP 1255263A2
Authority
EP
European Patent Office
Prior art keywords
movable section
movable
section
collapse
contact
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.)
Withdrawn
Application number
EP02291096A
Other languages
English (en)
French (fr)
Other versions
EP1255263A3 (de
Inventor
Patrick Conrick
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel SA
Nokia Inc
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 Alcatel SA, Nokia Inc filed Critical Alcatel SA
Publication of EP1255263A2 publication Critical patent/EP1255263A2/de
Publication of EP1255263A3 publication Critical patent/EP1255263A3/de
Withdrawn legal-status Critical Current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
    • H01H5/30—Energy stored by deformation of elastic members by buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature

Definitions

  • This invention relates to a bi-stable mechanical device like a self latching relay element for service agile ADSL application.
  • Bi-stable mechanical devices have a number of uses. The invention will be described with reference to a bi-stable mechanical device suitable for use as the moving contact of an electrical toggle switch.
  • bi-stable mechanical devices utilize an "over-the-centre" spring mechanism composed of a base, a lever pivoted to the base, and a spring.
  • the attachment point of the spring to the base and the lever align with the pivot point and the attachment of the spring to the lever at the point of maximum stretch of the spring.
  • the connection points of the spring to the lever and the base, and the pivot point form a triangle except at the maximum stretch.
  • Such an arrangement is used to provide positive action in moving the lever between first and second end positions. As the spring/lever connection moves beyond the aligned position, the spring action will tend to snap the lever to the end position on that side of the alignment positions.
  • An object of the invention is to improve the structure of existing bi-stable mechanical devices.
  • the invention provides a bi-stable mechanical device including at least a relatively fixed section and a relatively movable section, the movable section being connected to the fixed section by a resilient collapse mechanism, the collapse mechanism maintaining the movable section in either a first or a second position, there being a toggle point between the first and second positions.
  • the collapse mechanism includes a collapse zone including one or more bends to provide a region partly or wholly transverse to the line of transmission of the deforming force.
  • the mechanical device is formed of a single piece of material.
  • the movable section can include a permanent magnet on the movable section.
  • the movable section is associated with a solenoid showing one prong above the movable section and the other prong below the movable portion, with means to push the movable section down from a first position to a second position below a toggle point or to pull the movable section up from below the toggle point to a first position above the toggle point.
  • an upper and a lower electrical contact point are provided for electrical contact with the movable section, the upper and lower contact points located within the first and second position to provide contact pressure between the movable portion and the upper or lower contact point.
  • Figure 1 shows a first embodiment of the invention in the form of an electrical contact including an annular first portion 10 connected to a second portion 11 via three resilient armatures 12, 13, 14.
  • the arms include collapse zones, such as 18, intended to store elastic energy as the second portion is pushed towards the toggle point 17, and to release the elastic energy once the second portion is pushed past the toggle point.
  • the arms include a straight section which is inclined to the plane of the movable part to assist in transmitting the force applied to the contact to the collapse zones.
  • the first portion 10 is intended to be held fixed while the second portion 11 is designed to be moved between a first stable position and a second stable or quasi-stable position.
  • An operating mechanism such as a solenoid 15, 16 is associated with the movable portion 11 of the electrical contact.
  • the solenoid is shown in an exploded position with reference to the electrical contact.
  • the solenoid arm 16 would be located with one prong, 19, above the movable portion 11 and the other prong below the movable portion 11 so the solenoid can push the second portion down from a first position to past the toggle point 17 or pull the movable portion 11 up from below the toggle point to above the toggle point 17.
  • the movable portion When the movable portion is pushed below the toggle point by the first prong, it will toggle mechanically so the stored elastic energy, mainly in the collapse zones of the arms 12, 13, 14, will force the movable portion further below the toggle point towards a second stable position.
  • the stored elastic energy pushes it back towards the first stable position.
  • the prongs on the solenoid arm are spaced apart to permit the movable portion to travel between first and second positions.
  • One or both of these positions may be contact points where the movable portion makes contact with upper and/ or lower contacts.
  • the upper and lower contacts are within the first and second stable positions to provide contact pressure between the movable portion and the first or second contact point.
  • the invention is suitable for implementation as a single piece article, manufactured from a single piece of material.
  • the device may be stamped from a sheet of nickel, which has good ferromagnetic, electrical conductivity and resilience characteristics.
  • Figure 2 is a view of a second embodiment of the invention.
  • a circular fixed portion 20 a circular or dome shaped movable portion 21, and the collapse zone 22 in the form of a circular corrugation.
  • This arrangement is similar to the embodiment of figure 1 with the collapse region formed by the rotation of the arms about the vertical axis, and the arms being wholly used as collapse zones.
  • Figure 3 shows a section through the middle of the embodiment of Figure 2.
  • the solid lines show the contact in a first stable position 25, and the dotted lines show the contact in a second stable position 26.
  • the toggle position is shown at 27.
  • elastic energy is stored in the collapse zone 22 which deforms elastically to store the energy.
  • the device may be used as part of a snap-action electrical switch provided with one or two contact positions. If electrical contacts were to be provided, the upper contact would be slightly below position 25 and above the section 21, and the lower contact would be slightly above position 26 and below section 21.
  • Figures 1 & 2 show circular configurations with three collapse arms or a continuous circular collapse zone, other configurations are within the scope of the invention.
  • the movable contact may be square or rectangular and connected to first and second fixed portions by first and second resilient arms in a linear arrangement.
  • the movable contact 11, 21 may be moved by other means than a solenoid.
  • the movable contact may be incorporate some permanent magnetic material and be located between a pair of poles of a bi-directional electro-magnet with which upper and/or lower fixed contacts may be associated.
  • Figure 4 illustrates an example of the snap action utilized in the invention.
  • the whole of the arm forms the collapse zone.
  • Figure 4 may be assumed to be a side view of a linear arrangement including a movable contact 41 connected to a first fixed zone 40 by a first resilient collapse arm 42, and to a second fixed zone 44 by a second resilient collapse arm 43 as illustrated in Stage 1 of the figure.
  • movable contact 41 is shown in a first rest position on the same plane as the fixed zones 40 & 44. However it is not necessary for the working of the invention that the first rest position be in this plane.
  • Stage 2 shows the initial stages of the collapse action as contact 41 is pushed down a first distance h 1 .
  • the collapse regions 42 & 43 begin to distort elastically.
  • Stage 3 shows the contact as it reaches the toggle point at distance h 2 .
  • Stage 4 shows the second stable position at a distance h 3 . If a fixed contact were located at a distance h 4 , where h 4 , h 3 , there would be contact pressure exerted between the movable contact 41 and the fixed contact due to the unreleased elastic energy in the arms 42 & 43.
  • the collapse mechanism includes one or more bends in the arm.
  • the force applied to the movable contact is transferred to the collapse zone along the arm. Because the collapse zone includes a bend out of the line of the arm, some of the force is converted to elastic energy as the material i the collapse zone is deformed.
  • the geometry of the arm is such that the collapse zone will continue to store energy until the contact passes through the toggle point. Once the contact portion is pushed through the toggle point from the first stable position, it will snap across towards the second stable position. Similarly, in the reverse direction, pushing the contact from the second position through the toggle point will result in the contact snapping across towards the first stable position.
  • the collapse zone can be thought of as a portion of material being angled out of the line joining the edge of the contact to the fixed portion. Assuming a constant cross-section in the collapse zone, the greater the angle (up to 90°) through which the collapse zone is bent in the unloaded stable condition, the "softer" the collapse zone, ie, as the angle between the line of transmission of the force and the collapse zone material increases, the less the force required to deform it.

Landscapes

  • Push-Button Switches (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP02291096A 2001-05-04 2002-05-02 Selbstverriegelndes Relais für ADSL Anwendung Withdrawn EP1255263A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR4754A AUPR475401A0 (en) 2001-05-04 2001-05-04 Self latching relay element for service agile adsl application
AUPR475401 2001-05-04

Publications (2)

Publication Number Publication Date
EP1255263A2 true EP1255263A2 (de) 2002-11-06
EP1255263A3 EP1255263A3 (de) 2004-10-06

Family

ID=3828748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02291096A Withdrawn EP1255263A3 (de) 2001-05-04 2002-05-02 Selbstverriegelndes Relais für ADSL Anwendung

Country Status (2)

Country Link
EP (1) EP1255263A3 (de)
AU (1) AUPR475401A0 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415448A (en) * 1942-06-05 1947-02-11 Pierce John B Foundation Snap switch
US5149150A (en) * 1988-12-14 1992-09-22 Kathryn L. Acuff Trust Motion transmitting and amplifying device

Also Published As

Publication number Publication date
EP1255263A3 (de) 2004-10-06
AUPR475401A0 (en) 2001-05-31

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