EP1212973B1 - Verrou de porte - Google Patents

Verrou de porte Download PDF

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Publication number
EP1212973B1
EP1212973B1 EP00126304A EP00126304A EP1212973B1 EP 1212973 B1 EP1212973 B1 EP 1212973B1 EP 00126304 A EP00126304 A EP 00126304A EP 00126304 A EP00126304 A EP 00126304A EP 1212973 B1 EP1212973 B1 EP 1212973B1
Authority
EP
European Patent Office
Prior art keywords
gripping device
closing
gripping
door
axis
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.)
Expired - Lifetime
Application number
EP00126304A
Other languages
German (de)
English (en)
Other versions
EP1212973A1 (fr
Inventor
Albert Dirnberger
Georg Spiessl
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.)
emz Hanauer GmbH and Co KGaA
Original Assignee
emz Hanauer GmbH and Co KGaA
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 emz Hanauer GmbH and Co KGaA filed Critical emz Hanauer GmbH and Co KGaA
Priority to EP00126304A priority Critical patent/EP1212973B1/fr
Priority to DE50014457T priority patent/DE50014457D1/de
Priority to US09/993,200 priority patent/US7210711B2/en
Publication of EP1212973A1 publication Critical patent/EP1212973A1/fr
Application granted granted Critical
Publication of EP1212973B1 publication Critical patent/EP1212973B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/22—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
    • E05C3/24—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member
    • 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
    • A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/007—Devices for reducing friction between lock parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/57—Anti-friction provisions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0886—Sliding and swinging
    • Y10T292/0892—Multiple head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1051—Spring projected
    • Y10T292/1052—Operating means
    • Y10T292/1055—Link and lever
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism

Definitions

  • the invention relates to a door lock for household electrical appliances, such. Washing machines, dishwashers and tumble dryers, having a gripping device rotatable about an axis with a gripping trap, into which a closing bolt can be inserted, the gripping trap having a contact surface against which the entering closing pin presses, thereby causing a rotation of the gripping device, a closing spring actuating the gripping device with its circumference presses against a arranged on a frame of the door lock support point, wherein the closing spring is tensioned in an open position of the door lock and is relaxed in a closed position of the door lock, wherein the periphery of the gripping device forms a snap point, such that upon insertion of the locking in the gripping trap and thus effected rotation of the gripping device, the closing spring relaxes after exceeding the Schnapticians.
  • Such a door lock is for example off DE 198 37 248 C2 known.
  • To close the door the user must close it until the snap point is reached. After exceeding the Schnapticians Zuzieh concept are generated by the relaxing closing spring, which are sufficient to completely close the door, without causing the user to apply more forces.
  • In the closed position of the door lock (in the closed state of the door) also has a sufficiently large force to keep the door closed.
  • the locking forces in the closed state of the door lock are so large that a door seal is compressed, which prevents, for example, the unwanted escape of water in washing machines and dishwashers or warm air in dryers.
  • the user When opening the door, the user must overcome the locking and closing forces until he reaches the snap point of the door lock.
  • the object of the invention is to develop a door lock of the type described so that a comfortable in terms of the force required operation of the door is possible.
  • the door lock 1 shown in Fig. 1a in an open position comprises a fastening device 10 for receiving the components of the door lock described below 1.
  • the fastening device 10 may for example be a frame, a frame or a housing.
  • a pivotable about an axis 12 closing lever 14 is arranged in the fastening device 10.
  • a closing spring 16 is in the open position shown between the axis 12 opposite end of the closing lever 14 and the fastening device 10 so tense that the closing lever 14 is pressed in Fig. 1a in the counterclockwise direction.
  • a gripping device 18, described in more detail below, is rotatably mounted about an axis 20.
  • the axis 20 is between the closing spring 16 contacting end and the arranged with the axis 12 end of the closing lever 14.
  • a torsion spring not shown here is connected to the gripping device 18 and exerts on these forces to at least support rotations of the gripping device 18 according to FIG. 1 in the clockwise direction or to exert rotational forces in the clockwise direction on the gripping device 18, as described below.
  • the gripping device 18 has two recesses 24 and 26 in an effective region 22.
  • the active region 22, more precisely the recesses 24 and 26, serve to hold the gripping device 18 and thus the door lock 1 in the open position shown in FIG. 1a and in a closed position shown in FIG. 1b.
  • an axis 28 is arranged on the fastening device 1.
  • the axle 28 is rotatable about its longitudinal axis by suitable bearings (not shown) attached to the fastener 10.
  • the recess 24 is an eccentric indentation in the peripheral line of the gripping device 18.
  • the recess 24 is dimensioned in dependence of the outer circumference of the axis 28 in the region of the gripping device 18 and formed so that they are in the open position shown in Fig. 1a due to the force of the closing spring 16 areas of the outer peripheral surface of the axis 28 in the region of the gripping device 18 contacted.
  • the outer circumferential region of the shaft 28, which is in contact at least partially with the recess 24, is referred to below as the contact region 30.
  • the recess 24 has a slip edge 32, which extends away from the circumferential line of the gripping device 18 radially inwards and here describes a circular arc about the axis 20.
  • the slip edge 32 serves, as described below, to support the transition of the door lock 1 from the open position to the closed position and vice versa.
  • the slip edge 32 merges into a stop edge 33, which can serve as a stop for the axle 28 here in the open position.
  • a stop can also by an external stop are provided, which is not carried out on the gripping device 18, but separated from this and arranged for example on the fastening device 10.
  • the gripping device 18 In order to bring the door lock 1 from the open position shown in Fig. 1a in the closed position shown in Fig. 1b, the gripping device 18 is rotated counterclockwise according to these figures. In this case, the gripping device 18 slips with the skid edge 32 along the axis 28 until the axis 28 reaches the radially outer end of the skid edge 32. Further rotation of the gripping device 18 causes the axis 28 to succeed at a transition region 34 between the recesses 24 and 26, which is here designed as a corner. This transition region, i. here the corner 34, serves as a snap point, which causes the closing spring 16 can relax, whereby the closing lever 14 rotates about the axis 12.
  • the gripping device 18 slips with a sliding edge 36 of the recess 26 along the located in the region of the gripping device 18 outer periphery of the shaft 28 until it reaches a stop edge 38 of the recess 26.
  • the slip edge 36 extends radially inwardly at an angle from a tangent of the perimeter of the gripper 18, and transitions into the abutment edge 38, which extends to the perimeter of the gripper 18.
  • the above-mentioned, not shown here torsion spring for the gripping device 18 can be used. Now the door lock 1 is in the closed position shown in Fig. 1b.
  • the gripping device 18 has a gripping trap 40.
  • the gripping trap 40 is formed as an eccentric recess in the periphery of the gripping device 18.
  • the opening of the gripping trap 40 points in a direction in which it can receive a closing hook or closing hook 42 of a door, not shown, which is to be closed by means of the door lock 1.
  • the locking block 42 (for example, by a not arranged in the fastening device 10 not designated opening) into the receiving area of the gripping bar 40, where he presses against a contact surface 44 and the gripping device 18 of FIG Turning clockwise. Due to the rotation of the gripping device 18 caused by the closing block 42 (and possibly due to the optional torsion spring), the above-described operation of the gripping device 18 results.
  • the closing lever 14 When opening the door lock 1, i. in a transition from the closed position (Fig. 1b) in the open position (Fig. 1a), the closing lever 14, for example, using an opening lever, not shown, rotated about the axis 12 in a clockwise direction, whereby the closing spring 16 is compressed.
  • the gripping device 18 slides with the slip edge 36 along located in the gripping device 18 peripheral surface of the axis 28 to serving as a snap point corner 34.
  • the gripping device 18 is rotated clockwise, so that the gripping device 18 behind the corner 34 with the slip edge 32 slips along the axis 28 until it is positioned in the recess 24 corresponding to the open position.
  • the rotation of the gripping device 18 can be achieved here by removing the closing bolt 42 from the gripping trap 40, possibly together with a seal pushing away the casing door (not shown), and / or by the abovementioned torsion spring for the gripping device 18.
  • the force-displacement function which reflects the forces acting on the door latch 1, for closing (ie a transition from the open position to the closed position) and a subsequent opening (ie, a transition from the closed position to the open position ) a hysteresis. Therefore, the forces required in the transition from the open position to the closed position are less than the forces required in the transition from the closed position to the open position.
  • a force-displacement function is sketched by way of example in Fig. 2a, where there is a complete Closing operation by functional sections I and II and a complete opening operation by functional sections III and IV are reproduced.
  • the user has to apply the forces represented by the functional section III to move the gripping device 18 and the closing lever 14, wherein forces generated by the closing spring 16 are to be overcome.
  • the required for the section III of the opening process, applied by a user forces are significantly greater than the forces that are applied during the closing process in the section II through the door lock and act as closing and closing forces.
  • This hysteresis is due, inter alia, to the fact that in the closed position of the door lock 1, a large closing force is provided to securely close the door. Usually, this closing force is also dimensioned so that in the closed position, a seal for the door is compressed. Furthermore, the hysteresis of the force-displacement function is also caused by the fact that the appliance door is normally biased so that it is self-starting from a predetermined opening angle, i. without power supply by a user, closes.
  • the axle 28 is rotatably supported. Therefore, the axis 28 rotates during the transition from the open position to the closed position and the transition from the closed position to the open position by contact with the skid edge 32, the corner 34 and the skid edge 36th
  • the rotatability of the axis 28 causes the occurring during movements of the gripping device 18 friction in contrast to the prior art are no sliding friction. Rather, when the gripper device 18 moves, the axis 28 rolls over the contacted surfaces of the recess 24, the corner 34 and the recess 26.
  • Experimental studies have shown that in this way the above-described hysteresis of the force-displacement function is substantially avoided.
  • a force-displacement function for a door lock according to the door lock shown in Fig. 1a and Fig. 1b is shown in Fig. 2b.
  • the said reduction in friction means that upon reaching the snap point when opening the door lock 1, which is indicated in Fig. 2b by the reference SP O , must be applied by the user substantially no forces to the gripping device 18 in their for to bring the open position of the door lock 1 required position.
  • the reduction of the force acting between the gripping device 18 and the axis 28 forces also causes the torsion spring for the gripping device 18 is sufficient to bring them into their position for the open position of the door latch 1.
  • a hysteresis is also substantially avoided for sections I and IV.
  • a non-rotatable shaft which, in the region of the gripping device 18, has a roller bearing arranged on its outer circumference.
  • the gripping device 18 rolls not on the axis 28 as described above, but on the camp.
  • a further optimization of the door lock 1 is achieved when used between the axis 20 and the gripping device 18 and / or between the axis 12 and the closing lever 14 in the figures, not shown bearings.
  • Fig. 3 For a better understanding of the explanation of further embodiments, the gripping device 18 and the axis 28 according to the embodiment of Fig. 1 is shown schematically in Fig. 3.
  • the recess 24 may be omitted, so that the effective portion 22 is formed substantially by the recess 26, the corner 34 and the corner 34 adjacent peripheral line of the gripping device 18.

Claims (1)

  1. Verrouillage de porte pour des appareils ménagers électriques, tels que par exemple lave-linge, lave-vaisselle et sèche-linge, comprenant un dispositif de préhension (18) pouvant tourner autour d'un axe (20) avec un loquet de préhension (40), dans lequel un piston de fermeture (42) peut être introduit, le loquet de préhension (40) présentant une surface de contact (44), contre laquelle le piston de fermeture (42) entrant appuie et provoque alors une rotation du dispositif de préhension (18), un ressort de fermeture (16) appuyant le dispositif de préhension (18) avec son pourtour (22, 24, 26, 32, 33, 36, 38) contre un point d'appui disposé sur un bâti (10) du verrouillage de porte, le ressort de fermeture (16) étant tendu dans une position ouverte du verrouillage de porte et étant détendu dans une position de fermeture du verrouillage de porte, le pourtour du dispositif de préhension (18) formant un point d'encliquetage (34) de telle sorte que, lors de l'introduction du piston de fermeture (42) dans le loquet de préhension (40) et de la rotation ainsi occasionnée du dispositif de préhension (18), le ressort de fermeture (16) se détend après avoir dépassé le point d'encliquetage (34),
    caractérisé en ce que le point d'appui est mis à disposition sur une ligne périphérique (30) d'un axe (28) rotatif et monté sur roulement ou sur une ligne périphérique d'un palier à roulement disposé sur un axe non rotatif.
EP00126304A 2000-12-01 2000-12-01 Verrou de porte Expired - Lifetime EP1212973B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00126304A EP1212973B1 (fr) 2000-12-01 2000-12-01 Verrou de porte
DE50014457T DE50014457D1 (de) 2000-12-01 2000-12-01 Türverriegelung
US09/993,200 US7210711B2 (en) 2000-12-01 2001-11-06 Door lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00126304A EP1212973B1 (fr) 2000-12-01 2000-12-01 Verrou de porte

Publications (2)

Publication Number Publication Date
EP1212973A1 EP1212973A1 (fr) 2002-06-12
EP1212973B1 true EP1212973B1 (fr) 2007-07-04

Family

ID=8170547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126304A Expired - Lifetime EP1212973B1 (fr) 2000-12-01 2000-12-01 Verrou de porte

Country Status (3)

Country Link
US (1) US7210711B2 (fr)
EP (1) EP1212973B1 (fr)
DE (1) DE50014457D1 (fr)

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US7210711B2 (en) 2007-05-01
US20020073752A1 (en) 2002-06-20
EP1212973A1 (fr) 2002-06-12
DE50014457D1 (de) 2007-08-16

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