EP3075934A1 - Schiebetürantriebsvorrichtung - Google Patents

Schiebetürantriebsvorrichtung Download PDF

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Publication number
EP3075934A1
EP3075934A1 EP15425028.6A EP15425028A EP3075934A1 EP 3075934 A1 EP3075934 A1 EP 3075934A1 EP 15425028 A EP15425028 A EP 15425028A EP 3075934 A1 EP3075934 A1 EP 3075934A1
Authority
EP
European Patent Office
Prior art keywords
door
trolley
sliding
orthogonal
vertex
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
Application number
EP15425028.6A
Other languages
English (en)
French (fr)
Other versions
EP3075934B1 (de
Inventor
Ezio Gobbi
Damiano Piazza
Mauro Tosi
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.)
Bonferraro SpA
Original Assignee
Bonferraro SpA
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 Bonferraro SpA filed Critical Bonferraro SpA
Priority to EP15425028.6A priority Critical patent/EP3075934B1/de
Priority to PL15425028T priority patent/PL3075934T3/pl
Publication of EP3075934A1 publication Critical patent/EP3075934A1/de
Application granted granted Critical
Publication of EP3075934B1 publication Critical patent/EP3075934B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/16—Suspension arrangements for wings for wings sliding vertically more or less in their own plane
    • E05D15/20—Suspension arrangements for wings for wings sliding vertically more or less in their own plane movable out of one plane into a second parallel plane
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • A47L15/0081—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals with vertical sliding closing doors, e.g. hood-type dishwashers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A47L15/4261—Connections of the door to the casing, e.g. door hinges
    • 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
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1207—Counterbalance devices with springs with tension springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/665—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings
    • E05F15/668—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings
    • E05F15/681—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for vertically-sliding wings for overhead wings operated by flexible elongated pulling elements, e.g. belts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/47—Springs; Spring tensioners
    • E05Y2201/488—Traction springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00—Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/52—Safety arrangements
    • E05Y2400/53—Wing impact prevention or reduction
    • E05Y2400/54—Obstruction or resistance detection
    • E05Y2400/55—Obstruction or resistance detection by using load sensors
    • E05Y2400/552—Switches
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/304—Application of doors, windows, wings or fittings thereof for domestic appliances for dishwashers

Definitions

  • the present invention relates to a device for the movement of a sliding door, comprising a safety control and a shift in a direction orthogonal to the sliding plane.
  • a device for the movement of a sliding door comprising a safety control and a shift in a direction orthogonal to the sliding plane.
  • Specific reference will be made in the following to such a device applied to a machine for washing and disinfection, typically of articles used in the medical field, but it is clear that the device can be applied to other types of machines comprising the same type of door (e.g. dishwashers, sterilizers, refrigerators, ovens, etc.).
  • a machine for washing and disinfection usually includes a wash tank provided with a front opening surrounded by a sealing gasket and closed by a door sliding vertically upwards to give access to the tank, this sliding movement being conferred to the door by a drive device.
  • a drive device generally consists of two belt drives, one on each side of the door, each drive comprising a belt mounted on a pair of pulleys one of which is driven by a motor (which can also be only one for both drives).
  • the device also comprises a safety system that in the phase of descent of the door controls the stopping or the reversal of the rotation of the motor(s), and thus the reopening of the door, if it detects an obstacle on the closure path.
  • This safety system is required to prevent the door, in combination with the lower edge of the opening of the wash tank, from having a "scissor effect" on an object or an operator should it/him be found on its path.
  • the presence of the obstacle can be detected from the increase in the drive torque required to move the door or, more preferably, by a micro-switch that is activated by the door itself that moves towards the tank in a direction orthogonal to the sliding plane as a consequence of the contact with the obstacle.
  • EP 1949843 describes a device of this type in which the belt drive is not connected to the door directly but through a mechanical contrivance that comprises a trolley on which the door is mounted so as to be able to make said orthogonal shift. More specifically, the door is carried by the trolley through horizontal pins that engage substantially vertical eyelets the upper end of which is closer to the tank with respect to the lower end. In this way, in the normal downward movement the door pins rest on the lower ends of the eyelets, but when the door encounters an obstacle (which can also be the end-of-travel stop) the pins rise along the eyelets due to the relative movement of the trolley which continues to descend and the door shifts perpendicularly towards the tank activating the switch. Note that in the case in which the shift is caused by the end-of-travel stop this must also include a second switch that turns off the first switch, otherwise the motor would stop or reverse the movement of the door that could not close the tank by going to press the sealing gasket.
  • the device described in EP 1949843 further comprises a spring arranged between the trolley and the door in a substantially vertical position, so as to exert a force in the direction opposite to the gravity force exerted on the door.
  • This spring serves to reduce the impact of the door on the obstacle prior to the intervention of the safety system, since a part of the weight of the door is compensated by the spring force.
  • the object of the present invention is therefore to provide a sliding door drive device that is free from said drawbacks.
  • This object is achieved by means of a device of the type described above in which the door is mounted on each trolley through at least one articulated parallelogram whose outermost vertex is rotatably fixed on the trolley and whose innermost vertex is rotatably fixed on the door and engages a V-shaped profile formed on the trolley with a symmetrical arrangement with respect to the direction orthogonal to the sliding plane, the device further comprising elastic means that pull outwards said innermost vertex (note that outermost/innermost is defined with respect to the wash tank).
  • a first important advantage of the present device is to provide the safety control and the orthogonal shift of the door with a smoother movement, which guarantees a lower wear of the components and a higher speed of operation of the safety system.
  • a second significant advantage of this device is that it can be applied on a machine which provides for the closure of the door in any direction and not only downwards, even if the sliding plane is inclined with respect to the vertical.
  • Still another advantage of the subject device in its preferred embodiment, is to do without the second switch since the safety switch which controls the stopping/reversal of the motor is not affected by the orthogonal shift of the door when the latter reaches the end-of-travel stop.
  • a drive device can be applied both on a machine which provides for the opening of door 1 downwards ( Fig.1 ) and on a machine with the conventional opening of door 1 upwards ( Fig.2 ), as indicated by the representation in broken lines of the door in the open position.
  • the vertical dimension of the machine is reduced since door 1 does not protrude upwards in the open position, so that the machine can also be placed in a more limited space.
  • the device comprises two belt drives with the relative mounting contrivances of the door, one on each side of the door, but for the sake of simplicity figures 3a to 7 show only the unit on the left side of the machine, the unit on the right side being equal and symmetrical to it.
  • Each unit conventionally includes a trolley 2, on which door 1 is mounted, attached to a belt 3 which extends between a drive pulley 4 and a return pulley 5.
  • the size and layout of door 1 and belt 3 are such that in the open position of Fig.3a the front opening of tank W, surrounded by a sealing gasket G, is freely accessible.
  • the device also comprises at least one micro-switch 7 operatively connected to a control unit (not shown) for controlling the stopping/rotation reversal of motor 8 which drives the drive pulley 4, as better explained in the following.
  • each trolley 2 which in the first embodiment illustrated in figures 3a-3c includes a pair of articulated parallelograms 9, one near the top and one near the base of trolley 2, whose outermost vertex 9a is rotatably fixed on trolley 2 and whose innermost vertex 9b is rotatably fixed on door 1.
  • Each innermost vertex 9b engages a V-shaped profile 10 which is formed on trolley 2 with a symmetrical arrangement with respect to the X direction orthogonal to the sliding plane.
  • the force of spring 11 is sufficient to overcome the gravity force exerted on door 1 which tends to drag vertices 9b towards the lower ends of profiles 10, so that door 1 remains spaced from switch 7 and the sealing gasket G.
  • the closing movement of door 1 is started by activating motor 8 which rotates the drive pulley 4 (in the counter-clockwise direction in the illustrated example) which drives belt 3 that lifts trolley 2 integral therewith which drags door 1 upwards through parallelograms 9. Thanks to the force of spring 11 that keeps the innermost vertices 9b engaged in the tip of the V shape of profiles 10, door 1 does not make contact during the ascent movement with gasket G nor with the safety switch 7.
  • door 1 stops when an internal bracket 12 integral therewith abuts against an end-of-travel stop 13 secured to the frame of the machine, while the trolley 2 continues to rise until the innermost vertices 9b arrive into abutment with the lower end of profiles 10 ( Fig.3c ). Since the ascent of door 1 is blocked by stop 13, in this final portion of the closing travel the V-shaped profiles 10 push the innermost vertices 9b of parallelograms 9 towards tank W, overcoming the resistance of spring 11 and rotating parallelograms 9 counter-clockwise around the outermost vertices 9a. As a consequence, door 1 shifts in the X direction orthogonally to the sliding plane so as to press the sealing gasket G and to achieve the hermetic closure of tank W.
  • FIGS. 4a and 4b respectively show the cases of contact with an obstacle B during the ascent and the descent of door 1, in the first case the operation of the device being entirely similar to that described above for the normal closing movement of door 1, only that it is obstacle B that blocks the ascent of door 1 instead of the end-of-travel stop 13.
  • the operation is completely symmetrical to that described above, i.e. the innermost vertices 9b arrive at the upper end of profiles 10 and parallelograms 9 rotate clockwise, but in both cases the orthogonal shift of door 1 towards tank W causes the activation of the safety switch 7 that stops or reverses the rotation of motor 8.
  • micro-switch 7 and the end-of-travel elements 12, 13 above tank W it is sufficient to move micro-switch 7 and the end-of-travel elements 12, 13 above tank W to apply a device similar to that described above to the machine of Fig.2 in which the closing movement takes place downwards.
  • the device operates in the same way both with the closing movement upwards and downwards and in both cases it provides a safety control during both the opening and closing of door 1.
  • Figures 5 to 7 similar to Fig.3b , show three other embodiments which differ from the first embodiment in terms of number and/or arrangement of the connection parallelograms 9 and/or of the elastic means which tend to compress them horizontally. More specifically, in the second embodiment of Fig.5 the single horizontal spring 11 arranged centrally between door 1 and trolley 2 is replaced by two horizontal springs 11 arranged directly between vertices 9a and 9b of the upper and lower parallelogram 9 respectively, while in the third embodiment of Fig.6 it is replaced by a vertical spring 11' arranged between the adjacent free vertices 9c, 9d of the two parallelograms 9 (i.e. the upper vertex 9c of the lower parallelogram 9 and the lower vertex 9d of the upper parallelogram 9) .
  • the mounting of door 1 on trolley 2 provides a single parallelogram 9 and a single profile 10 arranged in a central position, with a pair of vertical springs 11", respectively arranged between trolley 2 and the free vertices 9c, 9d (which are free in that they are not bound to door 1 or trolley 2 as the other two vertices 9a, 9b).
  • first and second embodiments may be combined by arranging horizontal springs 11 both between door 1 and trolley 2 and between vertices 9a and 9b, so as to obtain the force required for supporting door 1 through a greater number of smaller springs that offer greater reliability.
  • the front view of Figure 8 shows how in the third embodiment the mounting contrivance on each side of door 1 comprises a vertical spring 11' arranged outside of parallelograms 9, but this spring may also be arranged inside of parallelograms 9 (or between these and trolley 2) or the contrivance could include two springs 11' respectively arranged inside and outside of parallelograms 9.
  • parallelograms 9 inside of trolley 2, i.e. between the latter and door 1, provided that the pins that constitute vertices 9b extend outwards up to engagement with profiles 10 formed in trolley 2.
  • the belt drive may be replaced by another type of transmission (e.g. rack) and springs 11, 11', 11" may be replaced by other equivalent elastic means.
  • springs 11, 11', 11" may be replaced by other equivalent elastic means.
  • the illustrated device provides a vertical up/down movement it could be used for a horizontal left/right movement through a simple rotation of 90° in the vertical plane, whereby any reference to the vertical arrangement of the above-described elements can be understood as horizontal in the case of horizontal movement and vice versa (therefore also the definitions upper/lower or top/bottom can be understood as right/left).
EP15425028.6A 2015-03-31 2015-03-31 Schiebetürantriebsvorrichtung Active EP3075934B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15425028.6A EP3075934B1 (de) 2015-03-31 2015-03-31 Schiebetürantriebsvorrichtung
PL15425028T PL3075934T3 (pl) 2015-03-31 2015-03-31 Urządzenie napędowe drzwiczek przesuwnych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15425028.6A EP3075934B1 (de) 2015-03-31 2015-03-31 Schiebetürantriebsvorrichtung

Publications (2)

Publication Number Publication Date
EP3075934A1 true EP3075934A1 (de) 2016-10-05
EP3075934B1 EP3075934B1 (de) 2017-05-10

Family

ID=53189766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15425028.6A Active EP3075934B1 (de) 2015-03-31 2015-03-31 Schiebetürantriebsvorrichtung

Country Status (2)

Country Link
EP (1) EP3075934B1 (de)
PL (1) PL3075934T3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108784584A (zh) * 2018-05-23 2018-11-13 佛山市顺德区美的洗涤电器制造有限公司 洗碗机的门控方法、装置及计算机可读存储介质
EP3409824A1 (de) 2017-05-30 2018-12-05 Bonferraro S.p.A. Waschvorrichtung mit schiebetür mit einer vorrichtung zum sammeln und entleeren des von der tür tropfenden wassers
CN109186169A (zh) * 2018-08-29 2019-01-11 南京创维家用电器有限公司 一种冰箱密封门的防漏冷密封结构
CN112302467A (zh) * 2019-08-01 2021-02-02 天津物网科技有限公司 一种自动售货机的储货柜开关门
EP4193900A1 (de) * 2021-12-07 2023-06-14 Getinge Disinfection AB Medizinisches wasch-/ und desinfektionsgerät

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514303A1 (de) * 1995-04-25 1996-10-31 Miele & Cie Spülautomat insbesondere für den Labor- und Krankenhausbereich, mit einem durch eine Hubtür verschließbaren Spülraum
EP1949843A1 (de) 2007-01-29 2008-07-30 International Steel Co. SpA Sicherheitsvorrichtung für das Sperrteil von Wasch-, Hitzedesinfektions-, Sterilisierungs-, Konservierungs-, Tiefkühl- und Heizmaschinen o.ä.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514303A1 (de) * 1995-04-25 1996-10-31 Miele & Cie Spülautomat insbesondere für den Labor- und Krankenhausbereich, mit einem durch eine Hubtür verschließbaren Spülraum
EP1949843A1 (de) 2007-01-29 2008-07-30 International Steel Co. SpA Sicherheitsvorrichtung für das Sperrteil von Wasch-, Hitzedesinfektions-, Sterilisierungs-, Konservierungs-, Tiefkühl- und Heizmaschinen o.ä.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409824A1 (de) 2017-05-30 2018-12-05 Bonferraro S.p.A. Waschvorrichtung mit schiebetür mit einer vorrichtung zum sammeln und entleeren des von der tür tropfenden wassers
CN108784584A (zh) * 2018-05-23 2018-11-13 佛山市顺德区美的洗涤电器制造有限公司 洗碗机的门控方法、装置及计算机可读存储介质
CN109186169A (zh) * 2018-08-29 2019-01-11 南京创维家用电器有限公司 一种冰箱密封门的防漏冷密封结构
CN109186169B (zh) * 2018-08-29 2021-03-02 南京创维家用电器有限公司 一种冰箱密封门的防漏冷密封结构
CN112302467A (zh) * 2019-08-01 2021-02-02 天津物网科技有限公司 一种自动售货机的储货柜开关门
EP4193900A1 (de) * 2021-12-07 2023-06-14 Getinge Disinfection AB Medizinisches wasch-/ und desinfektionsgerät
WO2023104427A1 (en) * 2021-12-07 2023-06-15 Getinge Disinfection Ab A medical washer/disinfector

Also Published As

Publication number Publication date
PL3075934T3 (pl) 2017-10-31
EP3075934B1 (de) 2017-05-10

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