EP3426837B1 - Türschloss mit türerfassung - Google Patents

Türschloss mit türerfassung Download PDF

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Publication number
EP3426837B1
EP3426837B1 EP17704907.9A EP17704907A EP3426837B1 EP 3426837 B1 EP3426837 B1 EP 3426837B1 EP 17704907 A EP17704907 A EP 17704907A EP 3426837 B1 EP3426837 B1 EP 3426837B1
Authority
EP
European Patent Office
Prior art keywords
door
slider
locking
sensing
lock
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.)
Active
Application number
EP17704907.9A
Other languages
English (en)
French (fr)
Other versions
EP3426837A1 (de
Inventor
Bojan Bicic
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works 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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Priority to PL17704907T priority Critical patent/PL3426837T3/pl
Priority claimed from PCT/US2017/015606 external-priority patent/WO2017155627A1/en
Publication of EP3426837A1 publication Critical patent/EP3426837A1/de
Application granted granted Critical
Publication of EP3426837B1 publication Critical patent/EP3426837B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12Casings; Tubs
    • D06F39/14Doors or covers; Securing means therefor
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/20Parameters relating to constructional components, e.g. door sensors
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/40Opening or locking status of doors
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the present invention relates to a door-lock for household appliances such as washing machines, dryers, washing-drying machines and the like.
  • a door-lock for household appliances is an electromechanical device adapted to lock in a closed position the door of a machine.
  • the door-lock is also provided with a door sensing circuit which provides information on the open/closed state of the door.
  • WO2013181289 discloses a door-lock for appliances including:
  • a drawback of the solution known from DE-A- 10 2015 201 944 is that it cannot be used on certain existing type of door locks.
  • the object of the present invention is to provide a door-lock with an improved door sensing device with hysteresis function, which can be applied on existing types of door locks.
  • this object is achieved by a door-lock having the characteristics forming the subject of claim 1.
  • numeral 10 indicates a door-lock for household appliances according to the present invention.
  • the door-lock 10 comprises a casing 12 having an opening 14 for the insertion of a hook 15 carried by the door of the appliance.
  • the door-lock 10 includes a cam 16 rotatable relative to the housing 12 about a first axis A between a retaining position and a release position.
  • the cam 16 has an engagement portion 18 which cooperates with the hook 15.
  • the cam 16 is associated with a spring 19 having a bistable function. When the door of appliance is in the open position the spring 19 pushes the cam 16 to the release position and when the door of appliance is closed the spring 19 pushes the cam 16 to the retaining position.
  • the door-lock 10 comprises a locking slider 20 which is rotatable relative to the casing 12 about a second axis B oriented at 90° with respect to the first axis A.
  • the locking slider 20 is rotatable about axis B between a locking position and an unlocking position.
  • a spring 22 biases the locking slider 20 towards the locking position.
  • the locking slider 20 has a first lock portion 24 and a second lock portion 26, arranged on opposite sides with respect to the second axis of rotation B.
  • the first lock portion 24 is intended to contact the cam 16 to lock the cam 16 in the retaining position.
  • the second lock portion 26 of the locking slider 20 is designed to contact a locking pin 28, shown in Figures 1 and 2 .
  • the locking pin 28 is movable in a rectilinear direction C parallel to the second axis B and is movable between a release position and locking position.
  • the locking pin 28 engages the second lock portion 26 of the locking slider 20, the locking slider 20 is locked in the lock position.
  • the locking pin 28 is controlled by an electromagnetic actuator (not shown) in the manner described in WO2013181289 .
  • the door-lock 10 comprises a door sensing device 30 adapted to detect the open/closed state of the door.
  • the door sensing device 30 comprises a door sensing slider 32, movable in the casing 12 along a rectilinear direction D between an open door position shown in Figure 1 and a closed door position shown in Figure 2 .
  • a spring 34 for instance a helical compression spring, is set between the casing 12 and the door sensing slider 32 and biases the door sensing slider 32 towards the closed door position.
  • the door sensing slider 32 has an integral abutment portion 36 having a top surface 38 and an inclined surface 40.
  • the door sensing slider 32 has an integral arm 42 projecting in a direction orthogonal to the direction D.
  • a projection 44 is formed at a distal end of the arm 42.
  • the projection 44 projects below a lower surface of the arm 42.
  • the arm 42 has an elastically deformable portion 43.
  • the door sensing device 30 comprises a door sensing pin 46 which is movable in the casing 12 along a rectilinear direction F orthogonal to the direction D between a raised position corresponding to the open door position of the door sensing slider 32 and a lowered position corresponding to the closed door position of the door sensing slider 32.
  • the door sensing pin 46 cooperates with a door sensing switch (not shown) which elastically biases the door sensing pin 46 towards the abutment portion 36.
  • the door sensing pin 46 In the open door position of the door sensing slider 32 the door sensing pin 46 abuts on the top surface 38 of the abutment portion 36 and keeps the door sensing switch in an open state.
  • the door sensing device 30 comprises a retaining portion 48 integrally formed on the locking slider 20 in the vicinity of the second lock portion 26.
  • the retaining portion 48 has a bottom surface 50, a top surface 52, a first side surface 54 and a second side surface 56 extending between the bottom surface 50 and the top surface 52.
  • the second side surface 56 extends radially from the first side surface 54.
  • the retaining portion 48 also comprises an inclined ramp 58 which connects the bottom surface 50 to the first side surface 54.
  • the inclined surface 58 is set between the second side surface 56 and a rounded surface 60 which projects from the bottom surface 50 at an end of the first side surface 54.
  • the projection 44 of the door sensing slider 32 cooperates with the first side surface 54, the second side surface 56 and the inclined ramp 58 to provide a hysteresis of the door sensing device 30 as will be disclosed below.
  • Figures 1 and 5 show the door-lock 10 in the configuration in which the door appliance is open.
  • the cam 16 is in the release position and the locking slider 20 is in the unlocking position.
  • the cam 16 is free to rotate about the first axis of rotation A.
  • the projection 44 of the door sensing slider 32 engages the first side surface 54 of the retaining portion 48 as shown in figure 5 and keeps the door sensing slider 32 in the open door position against the action of the spring 34 which tends to bias the door sensing slider 32 towards the closed door position.
  • the door sensing pin 46 abuts on the top surface 38 of the abutment portion 36. Accordingly, the door sensing pin 46 is in the raised position and keeps the door sensing switch in an open state.
  • the hook 15 engages the cam 16 and causes the cam 16 to rotate about the axis A from the release position to the retaining position, as shown in figure 2 .
  • the cam 16 is in the retaining position, the locking slider 20 rotates about axis B in clockwise direction under the force of the spring 22 from the unlocking position of Figure 1 to the locking position of Figure 2 .
  • Figures 2 and 7 show the closed door configuration.
  • the locking slider 20 is in the locking position and locks the cam 16 in the retaining position.
  • the door sensing slider 32 is in the closed door position.
  • the projection 44 of the door sensing slider 32 is disengaged from the first and second side surface 54, 56.
  • the door sensing pin 46 is in the lowered position and the door sensing switch is closed.
  • the locking pin 28 is in the locking position and engages the second locking portion 26 of the locking slider 20.
  • the locking pin 28 is disengaged from the second lock portion 26 of the locking slider 20, so that the locking slider 20 is free to rotate about axis B and the cam 16 is free to rotate about axis A.
  • the hook 15 moves away from the casing 12 and causes the cam 16 to rotate from the retaining position to the release position.
  • the rotation of the cam 16 from the retaining position to the release position causes rotation in counter-clockwise direction of the locking slider 20 from the locking position to the unlocking position.
  • the projection 44 follows different paths during door opening and door closing. Accordingly, the door sensing device 30 detects in a differentiated manner the open/closed state of the door during closing and opening the door. More specifically, the change from closed door state to open door state during opening of the door is detected by the door sensing pin 46 in a first position of the door, whereas the change from open door state to closed door state is detected by the door sensing pin 46 in a second position of the door, which is different from the first position. Therefore, detection of the change of state of the door occurs with a certain hysteresis during opening/closing of the door, as required by the appliance manufacturers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (5)

  1. Türschloss für Haushaltsgeräte, umfassend:
    - ein Gehäuse (12) mit einer Öffnung (14) zum Einführen eines Hakens (15), der von einer Tür eines Haushaltsgerätes getragen wird,
    - einen Nocken (16), der im Verhältnis zum Gehäuse (12) um eine erste Achse (A) zwischen einer Halteposition und einer Freigabeposition drehbar ist, wobei der Nocken (16) in der Halteposition so ausgebildet ist, dass er den Haken (15) in einer geschlossenen Türposition verriegelt,
    - einen Verriegelungsschieber (20), der mit dem Nocken (16) zusammenwirkt und zwischen einer Entriegelungsposition und einer Verriegelungsposition bewegbar ist, wobei der Schieber (20) in der Verriegelungsposition den Nocken (16) in der Halteposition verriegelt,
    - einen Verriegelungsstift (28) zum Verriegeln des Verriegelungsschiebers (20) in der Verriegelungsposition,
    - einen Türerfassungsschieber (32), der zwischen einer offenen Türposition und einer geschlossenen Türposition bewegbar ist, wobei der Türerfassungsschieber (32) einen Anlageabschnitt (36) mit einer oberen Oberfläche (38) und einer geneigten Oberfläche (40) hat,
    - einen Türerfassungsstift (46), der gegen den Anlageabschnitt (36) des Türerfassungsschiebers (32) elastisch vorgespannt ist, wobei der Türerfassungsstift (46) in der offenen Türposition des Türerfassungsschiebers (32) in Kontakt mit der oberen Oberfläche (38) und der Türerfassungsstift (46) in der geschlossenen Türposition des Türerfassungsschiebers (32) in Kontakt mit der geneigten Oberfläche (40) steht,
    dadurch gekennzeichnet, dass der Verriegelungsschieber (20) einen integralen Halteabschnitt (48) hat, der mit einem Vorsprung (44) eines Arms (42) des Türerfassungsschiebers (32) zusammenwirkt, wobei der Halteabschnitt (48) eine erste und eine zweite seitliche Oberfläche (54, 56) hat, die unterschiedliche Wege für den Vorsprung (44) während des Öffnens und Schließens der Tür definieren, wobei der Wechsel vom geschlossenen Türzustand zum offenen Türzustand während des Öffnens der Tür vom Türerfassungsstift (46) in einer ersten Position der Tür ermittelt wird, und wobei der Wechsel vom offenen Türzustand zum geschlossenen Türzustand vom Türerfassungsstift (46) in einer zweiten Position der Tür, die sich von der ersten Position unterscheidet, ermittelt wird.
  2. Türschloss nach Anspruch 1, dadurch gekennzeichnet, dass sich die erste seitliche Oberfläche (54) und die zweite seitliche Oberfläche (56) zwischen einer unteren Oberfläche (50) und einer oberen Oberfläche (52) erstrecken, wobei sich die zweite seitliche Oberfläche (56) von der ersten seitlichen Oberfläche (54) aus radial erstreckt.
  3. Türschloss nach Anspruch 2, dadurch gekennzeichnet, dass der Halteabschnitt (48) eine geneigte Rampe (58) umfasst, die die untere Oberfläche (50) mit der ersten seitlichen Oberfläche (54) verbindet.
  4. Türschloss nach Anspruch 3, dadurch gekennzeichnet, dass die geneigte Oberfläche (58) zwischen dem zweiten seitlichen Abschnitt (56) und einer gerundeten Oberfläche (60) angeordnet ist, die von der unteren Oberfläche (50) an einem Ende der ersten seitlichen Oberfläche (54) absteht.
  5. Türschloss nach Anspruch 3, dadurch gekennzeichnet, dass der Arm (42) einen elastisch verformbaren Abschnitt (43) umfasst, der sich elastisch verformt, wenn sich der Vorsprung (44) auf der geneigten Rampe (58) bewegt.
EP17704907.9A 2016-03-08 2017-01-30 Türschloss mit türerfassung Active EP3426837B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17704907T PL3426837T3 (pl) 2016-03-08 2017-01-30 Blokada drzwi z czujnikiem drzwiowym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB20161462 2016-03-08
PCT/US2017/015606 WO2017155627A1 (en) 2016-03-08 2017-01-30 Door-lock with door sensing

Publications (2)

Publication Number Publication Date
EP3426837A1 EP3426837A1 (de) 2019-01-16
EP3426837B1 true EP3426837B1 (de) 2020-03-04

Family

ID=64604398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17704907.9A Active EP3426837B1 (de) 2016-03-08 2017-01-30 Türschloss mit türerfassung

Country Status (2)

Country Link
EP (1) EP3426837B1 (de)
PL (1) PL3426837T3 (de)

Also Published As

Publication number Publication date
PL3426837T3 (pl) 2020-10-19
EP3426837A1 (de) 2019-01-16

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