EP0365507A2 - Appareil dans des interrupteurs commandés au pied - Google Patents

Appareil dans des interrupteurs commandés au pied Download PDF

Info

Publication number
EP0365507A2
EP0365507A2 EP89850353A EP89850353A EP0365507A2 EP 0365507 A2 EP0365507 A2 EP 0365507A2 EP 89850353 A EP89850353 A EP 89850353A EP 89850353 A EP89850353 A EP 89850353A EP 0365507 A2 EP0365507 A2 EP 0365507A2
Authority
EP
European Patent Office
Prior art keywords
switch
base plate
casing
cord
operating means
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Withdrawn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
EP89850353A
Other languages
German (de)
English (en)
Other versions
EP0365507A3 (fr
Inventor
Lennart Magnusson
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.)
ALTA-DESIGN AB
Original Assignee
ALTA-DESIGN 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 ALTA-DESIGN AB filed Critical ALTA-DESIGN AB
Publication of EP0365507A2 publication Critical patent/EP0365507A2/fr
Publication of EP0365507A3 publication Critical patent/EP0365507A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot

Definitions

  • the present invention relates to foot-operated switches and more particularly to an operating housing for a switch arranged on the electric cord itself (hereinafter designated "cord switch") whereby a foot-operated switch is achieved.
  • a type of cord switch which is generally available is of the push-type, where a spring-biassed pin projects from a housing, current being switched off and on for alternate depressions of the pin.
  • the conductors In the actual switch constituting a part of the cord switch, the conductors must be fastened in the complicated way mentioned above for foot-operated switches, and even though there are such cord switches built into different types of housings for operation as foot-operated switches, there are many work operations which must be carried out, which results in a comparatively expensive final product.
  • the cord switch which is at present most usual is of the push-button type with an actuating part inserted in a small housing, this part being rocked about 30° for each operation, such as to close in one position and open in the other position to interrupt the current through the switch.
  • This type of switch is simply made and is molded or heat-sealed directly on to the cord purely mechanically and it is not openable or exchangeable. A cord with such a switch will thus be easy to mass produce and it will be very cheap, although without the least reduction of strength and electrically safety.
  • the present invention has the object of mitigating the disad­vantages found in previously known foot-operated switches and to provide such a switch of the mentioned type, which satisfies the above-mentioned desires.
  • the device in accordance with the invention includes three parts, a base plate 1, an operating means 2 and a casing 3. These parts are suitably produced in plastics, e.g. by injection moulding.
  • the base plate 1 has a generally rectangular shape and at its outer peripheral edge an upwardly projecting wall 4, outside which there is a narrow edge 5, which is intended to join up against the casing 3 when the parts have been assembled.
  • the wall 4 has an outwardly directed ridge 6 on the outside, which is intended to snap into a corresponding recess 7 in the inner wall of the casing 3 when the parts are assembled.
  • openings 8 In the two opposing short sides there are openings 8, through which a cord is intended to pass. These openings 8 are placed somewhat closer to one long side. In this long side there are a pair of upstanding projections 9, which in coaction with corresponding projections 10 on the walls of the short sides, one on either side of the respective opening 8, are intended to locate the cord switch 11, which is to be enclosed in the inventive device.
  • In the base plate 1 there is also a short, upwardly projecting ridge 12 extending transverse the base plate 1 and terminated with a pair of projecting flanges 13. This ridge 12 is intended to be the fulcrum
  • the operating means 2 comprises an elongate, relatively thin body which can be hollow or solid. At its lower end the means 2 has a V-shaped recess 14, the apex 15 of which is intended to rest against the ridge 12 of the base plate 1 such as to permit pivoting of the means 2. On either side of the V-­shaped recess 14 the bottom edge the operating means 2 extends obliquely upwards in either direction at an angle of ap­ proximately 15° from the plane of the base plate 1. This means that the operating means 2 can be pivoted a total 30° between the end positions.
  • the apex 15 thus constitutes the fulcrum of the operating means 2, and the ends 16 are given an arcuate curve with a radius from this fulcrum so that they lie on the same arcuate line the whole time when the operating means 2 is pivoted.
  • bosses 17, 18 project out at right angles to the body on either side.
  • the boss 17 is intended to guide the means 2 in the casing 3 while the boss 18 projects out over the cord switch 11 such as to operate it.
  • the casing 3 is a rectangular box-shaped member with generally the same form as the base plate 1. It has a pheripheral vertical wall 20, the lower end edge 21 which is intended to rest against the narrow edge 5 on the base plate 1 on assembly, and on the inside of the wall 20 there are recesses co-acting with the outwardly directed ridges 6 on the walls 4 of the base plate 1.
  • the upper side has its greatest height at the centre and slopes downwardly towards the short sides, thus being similar to a gable roof.
  • In the walls of the short sides of the casing 3 there are openings 23, complemental to the openings 8 in the walls on the short sides of the bottom plate 1, so that a cord can be passed through them.
  • FIGs 8-9 illustrate the inventive device in an assembled, operative state. It will be seen how the push-button type cord switch 11 is kept in place on the bottom plate 11 with the aid of the projections 9, 10 and how it is kept down against the bottom plate 1 by the projections 26. Assembling the device is readily accomplished, since it contains so few parts and since there are now screws or other elements requir­ ing special treatment.
  • the cord switch 11 is thus laid on the base plate 1, the operating means 2 is placed over the ridge 12 and the casing 3 is then put into place and pressed downward with a light pressure so that the ridges 6 snap into the recesses 7, the cord switch thus being converted to a foot-­operated switch.
  • the inventive device should fall apart or be broken apart, something which is not likely per se, the cord switch 11 is still intact and there is no risk of anyone being injured by exposed, live parts. If it is desired to definitely prevent opening the inventive device, glue can be applied between the connecting walls 4, 20.
  • the casing is so strong that if it is trodden on it withstands the pressure thus occurring without being damaged. If the operating means 2 is trod on too hard, all that happens is that the lower edge of the means 2 is pressed against the base plate 1 without the boss 18 being pressed in any injurious way against the press button 25.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Tumbler Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP19890850353 1988-10-17 1989-10-16 Appareil dans des interrupteurs commandés au pied Withdrawn EP0365507A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803700A SE462635B (sv) 1988-10-17 1988-10-17 Anordning foer moejliggoerande av fotmanoevrering av en paa en sladd monterad mellanstroembrytare av vipptyp
SE8803700 1988-10-17

Publications (2)

Publication Number Publication Date
EP0365507A2 true EP0365507A2 (fr) 1990-04-25
EP0365507A3 EP0365507A3 (fr) 1991-06-12

Family

ID=20373658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890850353 Withdrawn EP0365507A3 (fr) 1988-10-17 1989-10-16 Appareil dans des interrupteurs commandés au pied

Country Status (2)

Country Link
EP (1) EP0365507A3 (fr)
SE (1) SE462635B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322310A1 (de) * 1993-07-05 1995-01-12 Murjahn Kg Vlm Elektrischer Fußschalter
FR2725829A1 (fr) * 1994-10-18 1996-04-19 Murjahn Kg Vlm Commande electrique a pedale
WO1998031030A1 (fr) * 1997-01-09 1998-07-16 Linak A/S Module de commande et de contact

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172217A (en) * 1978-04-04 1979-10-23 Mercury Electric Products Mfg. Corp. Foot pedal for a motor control device
FR2515864A1 (fr) * 1981-10-30 1983-05-06 Lublin Aron Interrupteur electrique actionne au pied

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172217A (en) * 1978-04-04 1979-10-23 Mercury Electric Products Mfg. Corp. Foot pedal for a motor control device
FR2515864A1 (fr) * 1981-10-30 1983-05-06 Lublin Aron Interrupteur electrique actionne au pied

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322310A1 (de) * 1993-07-05 1995-01-12 Murjahn Kg Vlm Elektrischer Fußschalter
DE4322310C2 (de) * 1993-07-05 1999-10-28 Murjahn Kg Vlm Elektrischer Fußschalter
FR2725829A1 (fr) * 1994-10-18 1996-04-19 Murjahn Kg Vlm Commande electrique a pedale
WO1998031030A1 (fr) * 1997-01-09 1998-07-16 Linak A/S Module de commande et de contact
US6313421B1 (en) 1997-01-09 2001-11-06 Linak A/S Contact and control module

Also Published As

Publication number Publication date
SE462635B (sv) 1990-07-30
SE8803700D0 (sv) 1988-10-17
EP0365507A3 (fr) 1991-06-12
SE8803700L (sv) 1990-05-21

Similar Documents

Publication Publication Date Title
AU599769B2 (en) Two-piece face plate for wall box mounted device
US5595289A (en) Rocker-type electrical switch
CA2041098C (fr) Verrouillage electromecanique et systeme modulaire pour tondeuse a gazon ou autre dispositif electrique
US4665290A (en) Trigger operated portable electric tool switch
US5573430A (en) Pressure connector
US5269709A (en) Battery terminal post clamp adapted for connection to an external electric power source or consumer
MXPA00000178A (es) Gen y metodo novedosos para producir l-aminoacidos.
JPH0637557Y2 (ja) スイツチ装置
US5762517A (en) Press-connecting joint connector
WO1988003322A1 (fr) Commutateur modulaire etanche pour appareils de soins personnels
EP0632473A1 (fr) Interrupteur électrique à ouverture forcée en cas de contacts soudés
EP0365507A2 (fr) Appareil dans des interrupteurs commandés au pied
US4387282A (en) Electrical switch assembly
JPS62184719A (ja) スイツチ装置
WO1980001858A1 (fr) Commutateur a bascule hermetique a illumination
EP0101958B1 (fr) Interrupteur à bouton poussoir
US5436421A (en) Progressive switch
US4202590A (en) Interlock arrangement for an electrical terminal enclosure
US4210791A (en) Slide switch
US4496802A (en) Single in-line package switch
CA2302910C (fr) Saillies sur la face avant d'une prise de courant pour empecher l'actionnement accidentel du commutateur d'essai par une fiche surdimensionnee
EP0056694B1 (fr) Outil électrique portatif à moteur
CA2306770A1 (fr) Commutateurs a pedale
GB2190800A (en) Electric plug with switch, fuse and neon lamp
JPH08508607A (ja) バス線に接続するためのアクチュエータまたはセンサ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19910909

17Q First examination report despatched

Effective date: 19931111

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19950628