EP0220249A1 - A safety device for switches. - Google Patents
A safety device for switches.Info
- Publication number
- EP0220249A1 EP0220249A1 EP19860902803 EP86902803A EP0220249A1 EP 0220249 A1 EP0220249 A1 EP 0220249A1 EP 19860902803 EP19860902803 EP 19860902803 EP 86902803 A EP86902803 A EP 86902803A EP 0220249 A1 EP0220249 A1 EP 0220249A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuse
- barring
- box
- switch
- pins
- 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.)
- Granted
Links
Classifications
-
- 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
- H01H9/10—Adaptation for built-in fuses
- H01H9/104—Adaptation for built-in fuses with interlocking mechanism between switch and fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0208—Tools for inserting and removing fuses
Definitions
- the present invention relates to a safety device for use in connection with power switches of a type known per se and comprising a substantially box-shaped breaker box with a number of one-sidedly located contact pieces which are in pairs intended to secure a fuse formed as a fuse body and two opposite terminal legs extending therefrom.
- switches of the above type are often only shielded by means of mounted plastic partitions between the- fuses and their holders (the contact pieces), which has resulted in a construction of switch boards, where each switch is mounted below separate doors or covers, which can only be opened when the switch in question is disconnected. This will obviously increase the price of switchboards, the daily operation of which is difficult and time-consuming.
- Switches with built-in safety devices are known preventing unauthorised access to live parts when the fuse has been mounted and the switch connected; however, no safety device is known, which, if desired, can be mounted as a separate unit on existing power switches of the above type and which can simultaneously offer the necessary safety.
- a safety device is characterised in that it comprises a number of fuse boxes for individual fastening on the breaker box and for shielding a set of contact pieces, with associated fuse, a number of barring pins, one for each fuse box, displaceably located in the longitudinal direction of the breaker box against the effect of a spring between a neutral position and a barring position, as well as a manoeuvring unit for collective operation of the barring pins either directly or indirect ⁇ ly, so that said barring pins in the in-position of the switch have been manoeuvred to said barring position and in the out-position of the switch to said neutral position, and in which each fuse box on the inside is constructed with inner walls in such a manner that the fuse concerned is given as narrow a passage as possible, which makes an oblique mounting of the fuse impossible, and in which the barring pins in the barring position make the removal of a fuse from, alternatively the insertion of a fuse, into, its respective contact pieces impossible.
- a safety device is hereby obtained which can easily be mounted as a separate unit on existing power switches and will consequently imply protection against the situation, where a impatient electrician is injured during an attempt of removing or inserting a fuse by means of an available unsuitable tool while the switch is connected.
- the safety device according to the invention prevents everybody from coming into contact at all with live parts in a connected switch via the terminal legs of the fuse by means of an inappropriate manipulation with the fuse, e.g. by an ob ⁇ lique insertion of the fuse into the fuse box. The space will prevent this.
- a further embodiment of the safety device according to the invention is characterised by comprising a cover for each fuse box, said cover having a handle portion, a rigid and manually operated closing handle, which is resiliently movable from a rest position and which is provided in one end for cooperation with one of the fuse vanes placed on the fuse body and having carrier pins situated on the underside for .engaging said fuse vanes for carrying said fuse, and besides said closing handle in a rest position bars the unintended sliding " off of a fuse vane from a carrier pin .
- the closing handle may furthermore be constructed for self-barring when the cover has been mounted.
- Fig. 1 is a schematic top view of a safety device with the switch in out-position and the barring pins correspon ⁇ dingly in neutral position,
- Fig. 2 illustrates the safety device of Fig. 1 but with the switch in in-position and the barring pins corres- pondingly in their barring position
- Fig. 3 is a sectional view along the line III-III of Fig. 2, in which the * left part of the figure in full line il ⁇ lustrates a correctly inserted fuse with the switch con ⁇ nected, and in which the right part in dotted line il- lustrates a fuse, the insertion of which has been attempted with the switch connected,
- Fig. 4 is a longitudinal sectional view of four stages of the connection between the cover of a fuse box and a fuse
- Fig. 5 is a longitudinal sectional view of two stages in the disengagement of the fuse from the cover.
- Fig. 1 of the drawing illustrates a position indicator 15 on the axle of the handle as well as markings for the in- and out-position, "I" and "0", respectively, of the switch.
- box-shaped shield a fuse box, in Figs. 1 and 2 desig ⁇ nated 17, 19, and 21, respectively, is positioned around each set of contact pieces, only indicated in Fig. 3 of the drawing at positions 16, there being a fuse box for each of the three phases normally available.
- a DIN-stan- dardized knife fuse consisting of a fuse body 23 and a terminal leg 25 in each end is inserted into each box as indicated by dotted line.
- Each fuse box comprises in particular an outer box 27 open at the top and the bottom; said outer box carries in the inner of the central third part a cham ⁇ ber for the fuse body 23, said chamber being substantially U-shaped in section.
- the chamber is formed by two inner end walls 29 and a bottom wall 31. Each inner wall 29 is at the top connected to an outer end wall through a horizontal partition 33.
- the mutual distance between the inner end walls 29 is only somewhat greater than the length of the fuse body 23, so that only little clearance d. is left between the end surfaces of the fuse body 23 and the inner end walls 29 of the fuse box.
- end walls 29 and the horizontal partitions 33 fur ⁇ thermore comprise a slot 35 each allowing insertion of the terminal legs of the fuse for engaging a contact piece 16 each.
- the fuse boxes 17, 19, and 21 may be fastened to the break- er box 11 by means of screws or suitable snap-action de ⁇ vice; this is not illustrated in the drawing.
- Each fuse box comprises a barring pin 41, 43, and 45, respectively, situated in the same horizontal and vertical plane and resting in suitable recesses in the side walls of the fuse boxes at a level between a horizontal partition 33 and the upper end of a contact piece 16.
- the barring pins can be moved between the two outermost positions by means of a suitable manoeuvring means, e.g. an appropri ⁇ ately formed cam disc 47 placed on the axle 13 of the handle.
- a suitable manoeuvring means e.g. an appropri ⁇ ately formed cam disc 47 placed on the axle 13 of the handle.
- the cam disc 47 If on the contrary the switch is connected, i.e. in its in-position, the cam disc 47 -has manoeuvred all barring pins to the barring position as illustrated in Fig. 2. This ' takes place under the sur- mounting of small spring forces from the springs 51, 53, and 55 ensuring the return of the pins to the neutral position when the switch is disconnected. It should be noted that as far as the two adjacent fuse boxes - which in the drawing are positioned to the right of the handle axis 13 - are concerned, the outer barring pin 45 is in ⁇ directly influenced through the inner barring pin 43.
- Each fuse box is furthermore covered by a specially formed cover according to the invention as illustrated in Figs. 3, 4, and 5.
- the cover provided with the general reference number 60, abuts the upper edge of the outer box walls 27 with an edge flange 61, cf. Fig. 3.
- a central section 63 of the cover is opened in the side walls to form a handle and is on the- underside constructed with open cells separated by partitions 65.
- the cover is provided with carrier pins 67 for engaging eye-shaped fuse vanes 69, which by way of standard are provided at the ends of the fuse body 23 of each fuse.
- a closing handle 71 is provided in one end wall of the cover opposite a carrier pin 67 " through suitable recesses in the end wall and on the top side; the closing handle may be bent outwards, away from the center of the handle or the cover, the cover being made of a material sufficiently elastic to make such a deflection possible.
- the closing handle 71 is furthermore provided with a downwardly pro ⁇ jecting nose 73 for cooperation with a fuse vane 69 as illustrated in Figs. 4 and 5, which are a longitudinal sectional view of the cover 60 and a sectional view of the fuse .
- the construction of the cover further allows the removal of a hot fuse without it being touched, as the closing handle 71 after removal from the fuse box in question is easily bent outwards by a push with a thumb, whereafter the fuse is capable of sliding off freely, if the handle is tilted at a suitable angle.
Landscapes
- Switch Cases, Indication, And Locking (AREA)
- Fuses (AREA)
- Push-Button Switches (AREA)
- Keying Circuit Devices (AREA)
- Automotive Seat Belt Assembly (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Un dispositif de sécurité utilisé en connexion avec des commutateurs électriques comprend des boîtes de fusibles (17, 19, 21) à monter individuellement sur une boîte d'interrupteur (11) et qui protègent une série de pièces de contact (16) ayant des fusibles à couteaux associés (23, 25). Les boîtes de fusibles sont pourvues de goupilles de blocage (41, 43, 45) qui peuvent être mises ensemble en position de blocage des fusibles (23, 25) par un organe commun de manoeuvre (47), lorsque le commutateur est connecté. Lorsque le commutateur est déconnecté, les goupilles de blocage sont libérées et ramenées à une position neutre par des ressorts de rappel (51, 53, 55); dans cette position neutre, les fusibles peuvent être librement retirés de leur pièce respective de contact (16), ou insérés dans celles-ci. Chaque boîte (17, 19, 21) comprend en outre des parois intérieures (29, 31, 33) pour limiter le libre déplacement du fusible, ce qui augmente la sécurité du contact. Chaque boîte de fusible est pourvue d'un couvercle (6) qui fonctionne également en tant que poignée pour insérer ou enlever les fusibles. La poignée (60) comprend une poignée de fermeture (71) auto-blocable lorsque le couvercle est inséré et qui coopère avec les ailettes des fusibles pour empêcher une libération par inadvertance des fusibles. Par conséquent, le couvercle ne peut pas être enlevé lorsque le commutateur est déconnecté, puisque les goupilles de blocage entravent le retrait du commutateur.A safety device used in connection with electrical switches comprises fuse boxes (17, 19, 21) to be mounted individually on a switch box (11) and which protect a series of contact parts (16) having fuses with associated knives (23, 25). The fuse boxes are provided with locking pins (41, 43, 45) which can be put together in the fuse blocking position (23, 25) by a common operating member (47), when the switch is connected. When the switch is disconnected, the locking pins are released and returned to a neutral position by return springs (51, 53, 55); in this neutral position, the fuses can be freely removed from their respective contact part (16), or inserted therein. Each box (17, 19, 21) further comprises interior walls (29, 31, 33) to limit the free movement of the fuse, which increases the safety of the contact. Each fuse box has a cover (6) which also functions as a handle for inserting or removing fuses. The handle (60) includes a self-locking closing handle (71) when the cover is inserted and which cooperates with the fuse fins to prevent inadvertent release of the fuses. Therefore, the cover cannot be removed when the switch is disconnected, since the locking pins hinder the removal of the switch.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86902803T ATE65147T1 (en) | 1985-04-17 | 1986-04-16 | SAFETY ARRANGEMENT FOR SWITCH. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK1743/85 | 1985-04-17 | ||
DK174385A DK160115C (en) | 1985-04-17 | 1985-04-17 | SAFETY DEVICE FOR POWER SWITCHES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0220249A1 true EP0220249A1 (en) | 1987-05-06 |
EP0220249B1 EP0220249B1 (en) | 1991-07-10 |
Family
ID=8107706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860902803 Expired - Lifetime EP0220249B1 (en) | 1985-04-17 | 1986-04-16 | A safety device for switches |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0220249B1 (en) |
AU (1) | AU588595B2 (en) |
DK (1) | DK160115C (en) |
FI (1) | FI86012C (en) |
WO (1) | WO1986006221A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4204238C2 (en) * | 1992-02-13 | 2000-06-21 | Moeller Gmbh | Insert with a switchable NH fuse strip for insert distributors |
DE9308495U1 (en) * | 1993-06-07 | 1994-10-20 | Weber AG, Emmenbrücke | Single or multi-pole NH fuse |
EP1198806B1 (en) * | 1999-07-22 | 2004-09-29 | Klaus Bruchmann | Switching system with a combined switching and blocking device |
DE29913698U1 (en) * | 1999-08-05 | 1999-11-04 | Bruchmann Klaus | Multi-pole switch fuse arrangement for busbar systems |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE361514C (en) * | 1922-10-16 | Voigt & Haeffner Akt Ges | Interlocking arrangement between more than two switch drives | |
US2342852A (en) * | 1942-11-19 | 1944-02-29 | Bulldog Electric Prod Co | Switch |
DE1069270B (en) * | 1956-08-11 | 1959-11-19 | Siemens Ag | FUSE HANDLE FOR INSERTING NH FUSES |
GB859084A (en) * | 1956-09-07 | 1961-01-18 | English Electric Co Ltd | Improvements in and relating to electric fusegear |
DE1150434B (en) * | 1958-02-10 | 1963-06-20 | Bassani Spa | Locking electric toggle switch |
DE2618360C3 (en) * | 1976-04-27 | 1983-11-03 | Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg | Fuse base with built-in switch |
-
1985
- 1985-04-17 DK DK174385A patent/DK160115C/en not_active IP Right Cessation
-
1986
- 1986-04-16 AU AU58113/86A patent/AU588595B2/en not_active Ceased
- 1986-04-16 EP EP19860902803 patent/EP0220249B1/en not_active Expired - Lifetime
- 1986-04-16 WO PCT/DK1986/000041 patent/WO1986006221A1/en active IP Right Grant
- 1986-12-11 FI FI865055A patent/FI86012C/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO8606221A1 * |
Also Published As
Publication number | Publication date |
---|---|
FI865055A0 (en) | 1986-12-11 |
DK160115C (en) | 1991-07-01 |
FI86012C (en) | 1992-06-25 |
EP0220249B1 (en) | 1991-07-10 |
DK174385D0 (en) | 1985-04-17 |
FI86012B (en) | 1992-03-13 |
WO1986006221A1 (en) | 1986-10-23 |
DK174385A (en) | 1986-10-18 |
AU588595B2 (en) | 1989-09-21 |
AU5811386A (en) | 1986-11-05 |
FI865055A (en) | 1986-12-11 |
DK160115B (en) | 1991-01-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5406449A (en) | Pullout type electric disconnect switch | |
US3428936A (en) | Safety cover for an electrical outlet receptacle | |
AP593A (en) | Enclosure for a circuit breaker. | |
MX166622B (en) | IMPROVEMENTS IN TWO-PIECE WEDGE LATCH, HANDLE BARRIER CLOSING INSERT AND LID INTERCONNECTION IN CIRCUIT BREAKERS | |
US4652696A (en) | Protective device for electrical receptacles | |
US5936214A (en) | Apparatus for restricting operation of push buttons on electric switching apparatus | |
US4496916A (en) | Switch fuse unit | |
EP0220249A1 (en) | A safety device for switches. | |
JPH09501012A (en) | Accessory compartment for high ampere rated circuit breakers | |
CA1171935A (en) | Fire alarm signal station | |
US6015956A (en) | Circuit breaker movable actuator blocking and securing method | |
US5060107A (en) | Molded case circuit breaker operating handle guard | |
BG98192A (en) | Electrical contact body of improved characteristics for current breaking | |
US2282520A (en) | Circuit breaker | |
US2698361A (en) | Operating means for enclosed electric circuit controlling devices | |
US5587570A (en) | Circuit breaker interlock unit to prevent single phasing | |
US3155786A (en) | Enclosure with lockable handle | |
US4656322A (en) | Electrical switching device | |
US4240122A (en) | Protective device | |
US4827374A (en) | Flip out fuse assembly | |
US4547634A (en) | Electrical appliance interlock switch with improved buss | |
GB1270188A (en) | Interlocking fuse and switch assembly | |
US1652795A (en) | X i inclosed switch | |
EP0992048B1 (en) | Circuit breaker movable actuator blocking and securing means | |
US3142002A (en) | Circuit breaker panel assembly with discriminating means |
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: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19870403 |
|
17Q | First examination report despatched |
Effective date: 19890602 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19910710 Ref country code: CH Effective date: 19910710 Ref country code: BE Effective date: 19910710 Ref country code: AT Effective date: 19910710 |
|
REF | Corresponds to: |
Ref document number: 65147 Country of ref document: AT Date of ref document: 19910715 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3680175 Country of ref document: DE Date of ref document: 19910814 |
|
ITF | It: translation for a ep patent filed |
Owner name: DR. ING. A. RACHELI & C. |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19920430 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732 |
|
ITPR | It: changes in ownership of a european patent |
Owner name: CESSIONE;HOLEC LK A/S |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
NLS | Nl: assignments of ep-patents |
Owner name: HOLEC SYSTEMEN EN COMPONENTEN B.V. TE HENGELO (O.) |
|
ITPR | It: changes in ownership of a european patent |
Owner name: CESSIONE;HOLEC SYSTEMEN & COMPONENTEN B.V. |
|
EAL | Se: european patent in force in sweden |
Ref document number: 86902803.5 |
|
NLS | Nl: assignments of ep-patents |
Owner name: HOLEC HOLLAND N.V. |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011231 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20020327 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20020328 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20020402 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: D3 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20020416 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20020418 Year of fee payment: 17 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030416 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030417 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031101 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031101 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20031101 |
|
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20030416 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050416 |