EP3865224B1 - Aufhängungssystem für den frontschieber eines laborabzuges und verfahren für einen frontschieber eines laborabzuges - Google Patents

Aufhängungssystem für den frontschieber eines laborabzuges und verfahren für einen frontschieber eines laborabzuges Download PDF

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Publication number
EP3865224B1
EP3865224B1 EP21156800.1A EP21156800A EP3865224B1 EP 3865224 B1 EP3865224 B1 EP 3865224B1 EP 21156800 A EP21156800 A EP 21156800A EP 3865224 B1 EP3865224 B1 EP 3865224B1
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EP
European Patent Office
Prior art keywords
arrester
sash
suspension
counterweight
suspension element
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.)
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Application number
EP21156800.1A
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English (en)
French (fr)
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EP3865224C0 (de
EP3865224A1 (de
Inventor
Mikko HARMANEN
Ville AUTIO
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.)
Visu Kaluste Oy
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Visu Kaluste Oy
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Publication of EP3865224A1 publication Critical patent/EP3865224A1/de
Application granted granted Critical
Publication of EP3865224C0 publication Critical patent/EP3865224C0/de
Publication of EP3865224B1 publication Critical patent/EP3865224B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/003—Anti-dropping devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/14—Counterbalance devices with weights
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/654—Cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/658—Members cooperating with flexible elongated pulling elements
    • E05Y2201/668—Pulleys; Wheels
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/25—Emergency conditions
    • E05Y2800/252—Emergency conditions the elements functioning only in case of emergency
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets

Definitions

  • the invention relates to a suspension system for a sash of a fume cupboard, which includes a vertically moving sash, which is supported by counterweights on two or more suspension elements, and in which there is an activatable arrester catch.
  • the invention also relates to a method in a sash of a fume cupboard.
  • Patent publication FR 1 236 036 A discloses a suspension system for a sash of a fume cupboard, which includes a vertically moving sash, which is supported by counterweights on suspension elements.
  • the system includes an activatable arrester catch, which stops the sash from falling if one of the suspension elements breaks.
  • the lack of tension from the counterweight activates the spring and lever, which stops the movement of the sash.
  • Patent publication EP 3 395 453 A1 discloses another suspension system for a sash of a fume cupboard, which includes a vertically moving sash, which is supported by counterweights on suspension elements, and which includes an activatable arrester catch to stop the movement of the sash if one of the suspension elements breaks.
  • the system comprises a lever actuated by a spring which, when the suspension element tears, triggers the lever to the extended position, so as to fit in suitable notches present on the edge of the walls of the fume cupboard's body stopping the movement of the sash.
  • Patent publication WO 2019/021101 A1 discloses another suspension system for a sash of a fume cupboard, which includes a vertically moving sash, which is supported by counterweights on suspension elements, and which includes an activatable arrester catch to stop the movement of the sash if one of the suspension elements breaks.
  • the safety system comprises spring loaded tongues, which activate when the suspension element brakes stopping the movement of the sash.
  • the invention is intended to create a fume-cupboard safety system, which prevents a sash falling if one suspension element breaks.
  • the characteristic features of this invention are stated in the accompanying Claim 1.
  • the invention is also intended to create a method in a fume-cupboard sash, by which the sash is prevented from falling, if a single suspension element fails.
  • the characteristic features of this invention are stated in the accompanying Claim 9.
  • the sash-suspension arrangement of the fume cupboard according to the invention includes a vertically moving sash, which is supported by counterweights on two or more suspension elements.
  • the suspension arrangement includes a safety arrester, in which if one suspension element breaks, the counterweight connected to the suspension element is arranged to activate an arrester catch to stop the movement of the unbroken suspension element. If one suspension element breaks, the fall of the sash can then be stopped almost before it has begun.
  • the safety arrester comprises a stopper, on which the counterweight of the broken suspension element is arranged to concentrate the force, which is transmitted to the arrester catch by means of a wire cable or similar.
  • the safety arrester is cross-connected between two or more suspension elements, wherein the counterweight of a first suspension element is arranged to activate the arrester catch connected to a second suspension element.
  • Each of the sash's counterweights are preferably arranged to activate an arrester catch. The falling of the sash can then be stopped if any suspension device fails.
  • the force of the counterweight connected to the broken suspension element, acting on the stopper, is preferably arranged to pull the arrester catch towards a support part, thus pressing the unbroken suspension element between the arrester catch and the support part. In this way, the movement of the unbroken suspension element is stopped, thus stopping the fall of the sash.
  • the wire cable of the safety arrester is preferably arranged to run through a guide in the counterweight. In this way, if the suspension element breaks, the falling counterweight is arranged to strike the stopper.
  • the safety arrester's cable preferably runs at least partly inside a sleeve. In this way, the safety arrester can be easily cross-connected.
  • Each suspension element is preferably connected to its own counterweight. The operation of the safety arrester will then be ensured.
  • the first end of the safety arrester's cable which comprises the stopper, is preferably attached to the fume cupboard's frame. This will prevent the safety arrester's cable from rising and becoming entangled.
  • the arrester catch is preferably pulled towards the support part by the force of the counterweight connected to the broken suspension element, and the unbroken suspension element is pressed between the arrester catch and the support part. This stops the movement of the unbroken suspension element, which stops the sash falling.
  • the safety arrester's cable is preferably guided through a guide in the counterweight.
  • the falling counterweight is aimed to strike the stopper.
  • Figure 1 shows one fume cupboard 2, to which the invention can be applied.
  • a working opening 4 On the front of the fume cupboard 2 is a working opening 4, which can be closed and opened using a sash 10.
  • the sash 10 can be stopped at any point whatever between the extreme ends of its vertical movement.
  • exhaust-air ducts 6 on top of the fume cupboard 10, through which noxious substances are led out of the breathing air.
  • FIG. 2 shows one embodiment of the suspension system of the sash 10 of a fume cupboard according to the invention.
  • the sash 10 is fitted to two counterweights 14 using two suspension elements 12.
  • the suspension element 12 can be, for example, a wire cable, a cord, or a belt.
  • the suspension element 12 runs around two pulleys 16, so that both counterweights 14 hang freely in the rear part of the fume cupboard 2.
  • the total mass of the counterweights 14 equals the mass of the sash 10.
  • gravity acts equally on the counterweights 14 and the sash 10, so that the system remains in equilibrium. In other words, the sash 10 can be moved vertically, and stopped at any height between the extreme ends of the movement.
  • the safety arrester 18 includes a cable 20, which is arranged to run through a guide 22 in the counterweight 14.
  • the guide 22 can be, for example, a loop attached to the side of the counterweight 14, or the counterweight 14 can be shaped as a hollow cylinder, in which case the safety arrester's 18 cable 20 is arranged to run through the counterweight 14, so that the counterweight 14 itself can act as the guide 22.
  • a stopper 24 which the counterweight 14 is arranged to strike when it falls.
  • the stopper's 24 outer diameter is larger than the guide's 22 inner diameter, so that the falling counterweight 14 cannot travel freely farther than the stopper 24.
  • the counterweight 14 strikes the stopper 24 as it falls, it directs a downwardly directed force onto it.
  • This activates the arrester catch 26 at the other end 202 of the cable 20, which is arranged around the unbroken suspension element 12.
  • the arrester catch 26 stops the movement of the unbroken suspension element 12, so that the fall of the sash 10 stops.
  • the safety arrester 18 is cross-connected in such a way that the counterweight 14 of the first suspension element 12 is arranged to activate the arrester catch 26 connected to the second suspension element 12.
  • the cable's 20 first end 201 is attached to the fume cupboard's 2 frame by a fastener 25.
  • the fastener 25 prevents the cable 20 from rising and becoming entangled by anchoring the stopper 24 to the fume cupboard's 2 frame.
  • the fastener 25 permits the stopper's 24 movement necessary to activate the arrester catch 26.
  • the fastener 25 can be, for example, a cord or a cable.
  • An actual separate fastener 25 is not, however, necessarily required, instead the cable 20 can continue through the stopper 24 and be attached at its first end 201 to the fume cupboard's 2 frame, so that the cable 20 itself can act as the fastener 25.
  • the stopper 24 can be, for example, a cable stop.
  • FIG 3 shows in detail one embodiment of the arrester catch 26 according to the invention.
  • the second end 202 of the safety arrester's 18 cable 20 is fitted through the first opening 261 of the arrester catch 26.
  • Attached to the cable 20 is a cable stop 27, the diameter of which is greater than the diameter of the first opening 261, and which is thus supported on the arrester catch 26, when the cable 20 is pulled.
  • the suspension element 12 is in turn arranged to run through the second opening 262 of the arrester catch 26.
  • the cable 20 is arranged to run for part of the way in a sleeve 28.
  • the cable 20 is dimensioned in such a way that there is no excess slack in the system.
  • the safety arrester 18 preferably includes an adjustment element 30 for removing slack.
  • the falling counterweight 14 directs a force, when it strikes the stopper 24, which is transmitted through the cable 20 to the arrester catch 26. This force pulls the arrester catch 26 towards the support part 32, when the unbroken suspension element 12 running through the arrester catch's 26 second opening 262 is pressed between the arrester catch 26 and the support part 32 and stops immediately.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Claims (11)

  1. Aufhängungssystem für den Frontschieber (10) eines Laborabzuges (2), das einen vertikal beweglichen Frontschieber (10) einschließt, der von Gegengewichten (14) an zwei oder mehr Federelementen (12) gestützt wird, wobei das Federungssystem einen Sicherheitshalter (18) einschließt, bei dem, sollte ein Federelement (12) brechen, das mit dem gebrochenen Federelement (12) verbundene Gegengewicht (14) so angeordnet ist, dass er einen Stoppraster (26) aktiviert, um die Bewegung des nicht gebrochenen Federelements (12) zu stoppen, dadurch gekennzeichnet, dass der Sicherheitshalter (18) einen Stopper (24) umfasst, an dem das Gegengewicht (14) des gebrochenen Federelements (12) angeordnet ist, um einen Kraft auszurichten, die durch ein Kabel (20) oder Ähnliches an den Stoppraster (26) übertragen wird, und dadurch, dass der Sicherheitshalter (18) zwischen zwei oder mehr Federelementen (12) verschränkt verbunden ist, wobei das Gegengewicht (14) eines ersten Federelements (12) angeordnet ist, um den Stoppraster (26) zu aktivieren, der mit einem zweiten Federelement (12) verbunden ist.
  2. Aufhängungssystem nach Anspruch 1, dadurch gekennzeichnet, dass jedes der Gegengewichte (14) des Frontschiebers (10) angeordnet ist, um einen Stoppraster (26) zu aktivieren.
  3. Aufhängungssystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die durch das mit dem gebrochenen Federelement (12) verbundene Gegengewicht (14) auf den Stopper (24) gerichtete Kraft angeordnet ist, um den Stoppraster (26) zu einem Stützelement (32) zu ziehen und so das nicht gebrochene Federelement (12) zwischen den Stoppraster (26) und das Stützelement (32) zu drücken.
  4. Aufhängungssystem nach einem der Ansprüche 1-3, dadurch gekennzeichnet, dass das Kabel (20) des Sicherheitshalters (18) so angeordnet ist, dass es durch eine Führung (22) in dem Gegengewicht (12) verläuft.
  5. Aufhängungssystem nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass das Kabel (20) des Sicherheitshalters (18) zumindest teilweise in einer Hülse (28) verläuft.
  6. Aufhängungssystem nach einem der Ansprüche 1-5, dadurch gekennzeichnet, dass der Sicherheitshalter (18) ein Verstellelement (30) zur Straffung aufweist.
  7. Aufhängungssystem nach einem der Ansprüche 1-6, dadurch gekennzeichnet, dass jedes Federelement (12) mit seinem eigenen Gegengesicht (14) verbunden ist.
  8. Aufhängungssystem nach einem der Ansprüche 1-7, dadurch gekennzeichnet, dass das erste Ende (201) des Kabels (20) des Sicherheitshalters (18), das den Stopper (24) umfasst, an dem Rahmen des Laborabzuges (2) befestigt ist.
  9. Verfahren zur Verhinderung eines Herunterfallens des Frontschiebers (10) eines Laborabzuges (2), bei dem ein Schiebefahren (10) vertikal in dem Laborabzug (2) bewegt wird, und der Laborabzug (10) von Gegengewichten (14) an zwei oder mehr Federelementen (12) gestützt wird, und bei dem, sollte ein Federelement (12) brechen, die Bewegung des nicht gebrochenen Federelements (12) gestoppt wird, wenn das mit dem gebrochenen Federelement (12) verbundene fallende Gegengesicht (14) einen Stoppraster (26) aktiviert, dadurch gekennzeichnet, dass das mit dem gebrochenen Federelement (12) verbundene Gegengewicht (14) eine Kraft auf einen Stopper (24) ausrichtet, durch den die Kraft über eine Kabel (20) oder Ähnliches auf den Stoppraster (26) übertragen wird, der mit dem nicht gebrochenen Federelement (12) verbunden ist.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass der Stoppraster (26) von dem durch die Kraft, die durch das mit dem gebrochenen Federelement (12) verbundene Gegengewicht (14) auf den Stopper (24) ausgerichtet ist, zu dem Stützelement (32) gezogen wird und das nicht gebrochene Federelement (12) zwischen den Stoppraster (26) und das Stützelement (32) gedrückt wird.
  11. Verfahren nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass das Kabel (20) des Sicherheitshalters (18) durch eine Führung (22) in dem Gegengewicht (12) verläuft.
EP21156800.1A 2020-02-13 2021-02-12 Aufhängungssystem für den frontschieber eines laborabzuges und verfahren für einen frontschieber eines laborabzuges Active EP3865224B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20205151 2020-02-13

Publications (3)

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EP3865224A1 EP3865224A1 (de) 2021-08-18
EP3865224C0 EP3865224C0 (de) 2023-11-08
EP3865224B1 true EP3865224B1 (de) 2023-11-08

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1236036A (fr) * 1959-06-02 1960-07-15 Commissariat Energie Atomique Dispositif de sécurité pour panneaux coulissant verticalement
DE8905076U1 (de) * 1989-04-21 1990-08-23 Hörmann KG Antriebs- und Steuerungstechnik, 4834 Harsewinkel Schlaffseil - Sicherungsgerät
US4956938A (en) * 1990-01-16 1990-09-18 Dement Neaville L Safety device for power operated overhead door
WO1999040282A1 (en) * 1998-02-04 1999-08-12 Steris Corporation Door safety stopper
KR101407547B1 (ko) * 2013-03-05 2014-06-13 최진선 흄후드의 도어 개폐량 조절장치
IT201700045556A1 (it) * 2017-04-27 2018-10-27 Omicron Italia S R L Cappa aspirante da laboratorio
IT201700085216A1 (it) * 2017-07-26 2019-01-26 Bicasa Srl Cappa chimica provvista di saliscendi di tipo migliorato

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EP3865224C0 (de) 2023-11-08
EP3865224A1 (de) 2021-08-18

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