CN112272719B - Door lock for household appliances, in particular washing machines and the like, with improved force reducing mechanism - Google Patents
Door lock for household appliances, in particular washing machines and the like, with improved force reducing mechanism Download PDFInfo
- Publication number
- CN112272719B CN112272719B CN201980021438.9A CN201980021438A CN112272719B CN 112272719 B CN112272719 B CN 112272719B CN 201980021438 A CN201980021438 A CN 201980021438A CN 112272719 B CN112272719 B CN 112272719B
- Authority
- CN
- China
- Prior art keywords
- locking
- cam
- door lock
- locking pin
- housing
- 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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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
-
- 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
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/20—Parameters relating to constructional components, e.g. door sensors
-
- 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
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/002—Geared transmissions
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
A door lock for a household appliance, comprising: -a housing (16) having an opening for inserting a hook (24) carried by a door of the appliance, -a cam (20) rotatable relative to the housing (16) about a first axis (a), between a holding position and a release position, wherein in the holding position the cam (20) is adapted to lock the hook (24) in a door closed position, -a main slider (40) co-operating with the cam (20) and movable between a release position and a locking position, wherein in the release position the cam (20) is free to rotate about the first axis (a), and wherein in the locking position the main slider (40) locks the cam (20) in the holding position, -a locking pin (44) adapted to lock the main slider (40) in the locking position, and-a force reducing mechanism (46) arranged between the main slider (40) and the locking pin (44) and operative to reduce a locking force transferred from the main slider (40) to the locking pin (44), wherein in the release position the cam (20) comprises a series of gears (52, 56) and wherein the force reducing mechanism (46) is coupled to the locking wheel (56) by way of the series of gears (52, 56).
Description
Technical Field
The present invention relates to a door lock for household appliances such as washing machines, dryers, laundry drying machines, and the like.
Background
A door lock for a household appliance typically comprises:
a housing having an opening for inserting a hook carried by a door of an appliance,
a cam rotatable relative to the housing about an axis of rotation between a retaining position and a release position, wherein in the retaining position the cam is adapted for locking the hook in the door closed position,
a locking slide co-operating with the cam and movable between a release position in which the cam is free to rotate about the axis of rotation and a locking position in which the slide locks the cam in the retaining position, and
an actuator comprising a locking pin adapted for locking the locking slider in the locking position.
The locking slide may have a linear movement, as disclosed in WO2013181289, for example, or a rotational movement as disclosed in DE 20 2015 100 627.
When the load of laundry inside the machine is pressed, a large force pushes the door of the machine outwards. This force is transmitted to the locking pin of the actuator. The high load on the appliance door requires a large force to move the locking pin from the locked position to the unlocked position.
One disadvantage of the prior art solutions is that the arrangement and interaction of the components of the door lock does not reduce the force of the hooks sufficiently to enable unlocking of the door lock mechanism in some cases, for example when the laundry is acting on the door with a relatively high force (e.g. exceeding 250N) at the end of the washing cycle.
Furthermore, the arrangement of the components of the locking mechanism in prior art door locks is such that the locking pin (moved by an actuator, such as a solenoid) moves perpendicular to the main slider, the position of which depends on the position of the door of the appliance. In such an arrangement, there is friction where the pin and the main slider are in mechanical contact, and therefore a significant force is required to move the pin from the locked position to the unlocked position.
In some cases, if the actuator of the locking mechanism is unable to move the locking pin toward the unlocked position, the door remains locked and the user is unable to remove the load from the machine. This situation may require a service phone to unlock the door lock and open the door.
Disclosure of Invention
The object of the present invention is to provide a door lock for a household appliance which is able to overcome these drawbacks.
According to the invention, this object is achieved by a door lock having the features forming the subject matter of claim 1.
The claims form an integral part of the teachings provided in relation to the invention.
Drawings
Features and advantages of the invention will become apparent in the course of the following detailed description, given by way of non-limiting example only, with reference to the accompanying drawings, in which:
fig. 1 is an exploded perspective view of a door lock according to the present invention, with some parts removed for greater clarity,
figure 2 is a perspective view of portions of the door lock indicated by arrow II in figure 1,
figure 3 is a top view according to arrow III of figure 2,
figure 4 is a perspective view in partial section according to arrow IV of figure 3,
fig. 5 is an exploded perspective view of the door lock with some components removed, and
fig. 6 and 7 are top views of the portion shown by arrow VI in fig. 5 in the locked and unlocked positions, respectively.
It will be appreciated that for clarity and simplicity of illustration, different drawings may not be drawn to the same scale.
Detailed Description
Referring to fig. 1 and 5, reference numeral 10 denotes a door lock for a home appliance according to the present invention. The door lock 10 includes a locking unit 12 and an electrical control unit 14. The locking unit 12 and the electrical control unit 14 may be two separate units from each other. The locking unit 12 and the electronic control unit 14 comprise respective housings 16, 18 having respective covers 16',18'. Alternatively, the locking unit 12 and the electrical control unit 14 may be integrated in a single housing.
Referring to fig. 1-4, the locking unit 12 includes a cam 20 rotatable about a first axis a relative to the housing 16. The cam 20 is rotatable about a first axis a between a hold position and a release position. Cam 20 is associated with a spring 42 having a bistable function. The spring 42 cooperates with the cam 20 through a transmission mechanism to be described later. The spring 42 urges the cam 20 to the release position when the door of the appliance is in the open position. When the door of the appliance is closed, the spring 42 pushes the cam 20 towards the holding position.
The cam 20 has a hooking portion 22 intended to engage a hook 24 (schematically represented by a cylindrical pin) carried by a door (not shown) of the household appliance. In operation, during door closing, the hook 24 penetrates the interior of the housing 16 through the opening of the housing 16 and engages the cam 20 when the cam 20 is in the release position. When the door is closed, the hook 24 rotates the cam 20 about the first axis a from the release position toward the retaining position, and after a certain angle of rotation of the cam 20, the spring 42 urges the cam 20, with which the hook 24 is engaged, toward the retaining position.
The locking unit 12 of the door lock 10 comprises an auxiliary slide 26 movable with respect to the housing 16 along a first linear direction B perpendicular to the first axis a. The secondary slide 26 has a surface 28 that abuts the back of the cam 20. The back of the cam 20 may have a roller 30 against which the surface 28 of the auxiliary slide 26 abuts. The roller 30 is rotatable on a pin 32 having an axis M parallel to the first axis a.
The locking unit 12 of the door lock 10 comprises a lever 34 rotatable with respect to the housing 16 about a second axis C perpendicular to the first axis a. The lever 34 has a first end 36 and a second end 38 that are located on opposite sides relative to the second axis C. The first end 36 of the lever 34 is resiliently pressed against the auxiliary slide 26.
The locking unit 12 includes a main slider 40, the main slider 40 being movable relative to the housing 16 in a first direction D' and a second direction d″ along a linear direction D. As shown in fig. 4, a spring 42 is disposed between the main slider 40 and the housing 16 and resiliently biases the main slider 40 in the first direction D'. The spring 42 urges the main slider 40 against the second end 38 of the lever 34. The main slide 40 is connected to the cam 20 by the lever 34 and the auxiliary slide 26. Thus, the position of the main slide 40 along the second linear direction d″ is directly linked to the position of the cam 20 about the first axis a. When the cam 20 is in the holding position (door closing position), the main slider 40 is in the locking position.
The locking unit 12 includes a locking pin 44 for locking the main slider 40 in the locking position. The locking pin 44 is hinged to the housing 16 about a third axis E parallel to the second axis C.
The locking unit 12 includes a force reducing mechanism 46 interconnected between the main slider 40 and the locking pin 44, which reduces the locking force transmitted by the main slider 40 to the locking pin 44.
As shown in fig. 1 and 3, the relief mechanism 46 includes a rack 48 fixed to the main slider 40 or integrally formed with the main slider 40. The relief mechanism 46 includes a double gear 50 rotatable relative to the housing 16 about a fourth axis F parallel to the third axis E. The double gear 50 comprises a smaller gear 52 and a larger gear 54, which are fixed coaxially to each other, preferably formed as a single piece. The smaller gear 52 meshes with the rack 48 of the main slider 40.
The relief mechanism 46 includes a locking wheel 56, the locking wheel 56 being rotatable relative to the housing 16 about a fifth axis G parallel to the fourth axis F. The locking wheel 56 includes a third gear 58. The third gear 58 is fixed together or integrally formed with the locking wheel 56 and meshes with the larger gear 54 of the double gear 50. The third gear 58 is smaller than the larger gear 54.
As shown in fig. 6 and 7, the locking wheel 56 has a step 60 that can be engaged by a tooth 62 of the locking pin 44. When the teeth 62 of the locking pin 44 engage the step 60 of the locking wheel 56, the locking wheel 56 is prevented from rotating in a clockwise direction indicated by arrow H in fig. 6 and 7. Thus, since the main slider 40 is connected to the locking wheel 56 by the rack 48 and the gears 52, 54 and 58, the main slider 40 is prevented from moving in the second direction d″ when the teeth 62 of the locking pin 44 engage the steps 60 of the locking wheel 56.
Referring to fig. 5-7, the electrical control unit 14 of the door lock 10 includes an actuator 64 housed in the housing 18. The actuator 64 has a shaft 66 movable in a third linear direction L. The connecting element 68 is fixed to the shaft 66 of the actuator 64. The shaft 66 and the connecting element 68 of the actuator 64 are movable along a third linear direction L between two stable positions, namely an unlocked position shown in fig. 6 and a locked position shown in fig. 7. The third linear direction L along which the connecting element 68 can move is perpendicular to the third axis E about which the locking pin 44 is articulated.
The actuator 64 may be a solenoid electromagnetic actuator, such as disclosed in DE 10 2014 226 049 of the same applicant. The actuator 64 may be powered with a locking pulse having a direction of current flow, i.e., moving the shaft 66 and the connecting element 68 from the unlocked position to the locked position, and an unlocking pulse moving the shaft 66 and the connecting element 68 from the locked position to the unlocked position. A compression spring 70 may be disposed between the housing 16 and the connecting element 68 for biasing the connecting element 68 toward the locked position.
The connecting element 68 is connected to the locking pin 44 by means of a lever 71 having opposite ends hinged to the connecting element 68 and the locking pin 44, respectively, about respective axes parallel to the third axis E. The lever 71 is arranged such that linear movement of the connecting element 68 in the linear direction L results in swinging of the locking pin 44 about the third axis E. More specifically, linear movement of the connecting element 68 in the linear direction L between the unlocked position (fig. 6) to the locked position (fig. 7) causes the locking pin 44 to oscillate about the third axis E relative to the locking wheel 56 between the disengaged position and the engaged position.
The interengaged surfaces 60, 62 are caused to disengage by the swinging movement of the locking pin 44, which significantly reduces friction compared to prior art solutions in which the locking pin is movable in a linear direction relative to the locking element.
The oscillating locking pin 44 may cooperate with a common locking element (not necessarily with a locking wheel) that locks the cam 20 in the holding position directly or indirectly.
The electrical control unit 14 of the door lock 10 may include a printed circuit board 72 having electrical circuitry for powering the actuator 64. At least one first sensor (not shown), such as a hall sensor or a magnetoresistive sensor, may be disposed on the printed circuit board 72 for detecting at least one first magnet 74 (fig. 1, 2) carried by the main slider 40. The first sensor provides a signal indicating an open/closed state of the door to an electronic control unit of the appliance. At least one second sensor (not shown), such as a hall sensor or a magneto-resistive sensor, may be provided on the printed circuit board 72 for detecting at least one second magnet 76 (fig. 5) carried by the connection element 68. The second sensor provides a signal indicating the locked/unlocked state of the door to the electronic control unit of the appliance. In the example shown in the drawings, a pair of first magnets 74 and a pair of second magnets 76 are provided, which cooperate with a pair of first sensors and a pair of second sensors, respectively.
When the hook 24 carried by the door of the household appliance moves within the housing 16 of the door lock 10, it rotates the cam 20 about the first axis a from the release position to the retaining position. Rotation of the cam 20 about the first axis a from the released position to the held position moves the main slide 40 in the second direction D "and compresses the spring 42. Linear movement of the main slide 40 in the second direction d″ rotates the wheels 50, 56 and 58 about the respective axes F, G.
When the hook 24 moves a specified distance within the housing 16 of the door lock 16, the cam 20 begins to pull the hook 24. In this case, the position of the axis M of the pin 32 of the roller 30 of the cam 20 is lower than the position of the axis a of the cam 20. At this stage, the spring 42 is extended.
When the hook 24 is in the door closed position, the step 60 on the locking wheel 56 is in the position shown in fig. 6, which allows the locking pin 44 to move to the engaged position.
At this time, the actuator 64 is supplied with the lock pulse. The actuator moves the connecting element 68 to swing the locking pin 44 to the locking position shown in fig. 7. The interaction between the locking pin 44 and the locking wheel 56 inhibits rotation of the locking wheel 56 in the clockwise direction H. Therefore, the main slider 40 cannot move in the second direction d″ and the cam 20 remains locked in the holding position, so that the door of the appliance cannot be opened. In the locked state of the door lock, the hook 24 can still be moved to a deeper position within the housing 16 of the door lock.
When the control unit sends an unlocking pulse to the actuator 64, the force of the actuator 64 is greater than the force of the spring 70 and the connecting element 68 is moved towards the unlocked position by the movement of the shaft 66 of the actuator 64. The connecting element 68 causes the locking pin 44 to rotate away from the locking wheel 56, which releases the interaction between the locking pin 44 and the locking wheel 56. Thus, the door lock is unlocked because the cam 20 can be rotated to release the hook 24.
The force reducing mechanism 46 reduces the force transferred from the hook 24 of the appliance to the locking pin 44. The reduction in the force transferred to the locking pin 44 enables the door lock to be unlocked even in the event that a relatively high force (e.g., 250N) is applied to the door by the laundry.
The solution according to the invention thus enables the release of the door lock even in the most severe conditions, in which the door lock according to the prior art runs the risk of remaining locked in the closed state of the door.
As an additional advantage, the door lock 10 may use a solenoid actuator, which is the preferred actuator in this application, so that if the door lock according to the invention is used by an appliance manufacturer instead of the door locks of the prior art, no change of the control unit of the appliance is required.
Of course, without departing from the principles of the invention, the details of construction and embodiments may vary considerably from those described and illustrated without departing from the scope of the invention as defined in the appended claims.
Claims (8)
1. A door lock for a household appliance, comprising:
a housing (16), said housing (16) having an opening for inserting a hook (24) carried by a door of the appliance,
a cam (20), the cam (20) being rotatable relative to the housing (16) about a first axis (A) between a holding position and a release position, wherein in the holding position the cam (20) is adapted to lock the hook (24) in a door closed position,
a main slide (40), the main slide (40) cooperating with the cam (20) via a transmission mechanism (26, 34), and the main slide (40) being movable in a second linear direction (D) due to rotation of the cam (20) between the holding position and the release position, and
a locking pin (44), the locking pin (44) being adapted for locking the movement of the main slider (40),
characterized in that a force reducing mechanism (46) is arranged between the main slider (40) and the locking pin (44) and operates to reduce a locking force transferred from the main slider (40) to the locking pin (44), wherein the force reducing mechanism (46) comprises a locking wheel (56) connected to the main slider (40) by a series of gears (52, 54, 58), and wherein the locking pin (44) cooperates with the locking wheel (56).
2. The door lock according to claim 1, characterized in that the force reducing mechanism (46) comprises a rack (48), the rack (48) being fixed to the main slider (40) or being integral with the main slider (40) and meshing with a smaller gear (52), the smaller gear (52) being coaxially fixed to a larger gear (54), the larger gear (54) meshing with a third gear (58) fixed to the locking wheel (56).
3. Door lock according to claim 1, characterized in that the cam (20) cooperates with an auxiliary slide (26), the auxiliary slide (26) being movable in a first linear direction (B) with respect to the housing (16), wherein the main slide (40) is movable in the second linear direction (D) with respect to the housing (16), a lever (34) being hinged with the housing (16) being provided between the auxiliary slide (26) and the main slide (40), the lever (34) having a first end (36) abutting the auxiliary slide (26) and a second end (38) abutting the main slide (40).
4. A door lock according to claim 3, characterized in that a spring (42) biases the main slider (40) towards the second end (38) of the lever (34).
5. Door lock according to any of the preceding claims, characterized in that the locking pin (44) is hinged to the housing about an axis (E) parallel to the rotation axis (G) of the locking wheel (56) and is movable relative to the locking wheel (56) between a disengaged position and an engaged position.
6. The door lock according to claim 5, characterized in that the locking pin (44) has teeth (62) cooperating with a step (60) of the locking wheel (56).
7. Door lock according to claim 5, characterized in that it comprises an actuator (64) with a shaft (66) movable along a third linear direction (L), said bearing carrying a connecting element (68) connected to the locking pin (44) by means of a lever (71).
8. The door lock according to claim 7, characterized in that the actuator (64) is a solenoid electromagnetic actuator powered by a current pulse having a direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102018000004000A IT201800004000A1 (en) | 2018-03-27 | 2018-03-27 | DOOR-LOCK FOR HOUSEHOLD APPLIANCES, IN PARTICULAR WASHING MACHINES AND SIMILAR, WITH PERFECTED FORCE REDUCTION MECHANISM |
| IT102018000004000 | 2018-03-27 | ||
| PCT/US2019/023856 WO2019190975A1 (en) | 2018-03-27 | 2019-03-25 | Door-lock for household appliances, in particular washing machines and the like, with improved force-reducing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112272719A CN112272719A (en) | 2021-01-26 |
| CN112272719B true CN112272719B (en) | 2023-09-01 |
Family
ID=62530506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980021438.9A Active CN112272719B (en) | 2018-03-27 | 2019-03-25 | Door lock for household appliances, in particular washing machines and the like, with improved force reducing mechanism |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3775351B1 (en) |
| CN (1) | CN112272719B (en) |
| IT (1) | IT201800004000A1 (en) |
| PL (1) | PL3775351T3 (en) |
| WO (1) | WO2019190975A1 (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793640A (en) * | 1986-10-30 | 1988-12-27 | United Technologies Electro Systems, Inc. | Cam-actuated electric door lock |
| US6145898A (en) * | 1997-04-30 | 2000-11-14 | Ellenberger & Poensgen Gmbh | Door locking device for electric apparatus |
| CN2532194Y (en) * | 2002-03-19 | 2003-01-22 | 重京株式会社 | Digital electronic door lock with speed-reducing gear group |
| EP1433893A2 (en) * | 2002-12-23 | 2004-06-30 | BITRON S.p.A. | A door lock device, particularly for domestic electrical appliances |
| EP2537973A1 (en) * | 2011-06-24 | 2012-12-26 | Bitron S.p.A. | Device for locking and unlocking a door of an electric household appliance |
| WO2013181289A1 (en) * | 2012-05-30 | 2013-12-05 | Illinois Tool Works Inc. | Electromagnetic door-lock |
| DE202015100627U1 (en) * | 2014-03-05 | 2015-04-24 | Illinois Tool Works Inc. | Door lock with swivel slide |
| DE102014226049A1 (en) * | 2014-02-11 | 2015-08-13 | Illinois Tool Works Inc. | Electromagnetic door lock with permanent magnet |
| WO2016199056A1 (en) * | 2015-06-10 | 2016-12-15 | Elbi International S.P.A. | System to control the closing of a door of a household appliance, in particular for a washing machine, such as a dishwasher |
| KR20170007974A (en) * | 2015-07-13 | 2017-01-23 | 삼성전자주식회사 | Door locking device and fabric treating apparatus having the same |
| CN206581722U (en) * | 2017-03-20 | 2017-10-24 | 杭州东城电子有限公司 | A kind of motor-driven electric control lock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0110456D0 (en) * | 2001-04-28 | 2001-06-20 | Meritor Light Vehicle Sys Ltd | Latch assembly |
-
2018
- 2018-03-27 IT IT102018000004000A patent/IT201800004000A1/en unknown
-
2019
- 2019-03-25 CN CN201980021438.9A patent/CN112272719B/en active Active
- 2019-03-25 EP EP19714295.3A patent/EP3775351B1/en active Active
- 2019-03-25 PL PL19714295.3T patent/PL3775351T3/en unknown
- 2019-03-25 WO PCT/US2019/023856 patent/WO2019190975A1/en unknown
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793640A (en) * | 1986-10-30 | 1988-12-27 | United Technologies Electro Systems, Inc. | Cam-actuated electric door lock |
| US6145898A (en) * | 1997-04-30 | 2000-11-14 | Ellenberger & Poensgen Gmbh | Door locking device for electric apparatus |
| CN2532194Y (en) * | 2002-03-19 | 2003-01-22 | 重京株式会社 | Digital electronic door lock with speed-reducing gear group |
| EP1433893A2 (en) * | 2002-12-23 | 2004-06-30 | BITRON S.p.A. | A door lock device, particularly for domestic electrical appliances |
| EP2537973A1 (en) * | 2011-06-24 | 2012-12-26 | Bitron S.p.A. | Device for locking and unlocking a door of an electric household appliance |
| WO2013181289A1 (en) * | 2012-05-30 | 2013-12-05 | Illinois Tool Works Inc. | Electromagnetic door-lock |
| DE102014226049A1 (en) * | 2014-02-11 | 2015-08-13 | Illinois Tool Works Inc. | Electromagnetic door lock with permanent magnet |
| DE202015100627U1 (en) * | 2014-03-05 | 2015-04-24 | Illinois Tool Works Inc. | Door lock with swivel slide |
| WO2016199056A1 (en) * | 2015-06-10 | 2016-12-15 | Elbi International S.P.A. | System to control the closing of a door of a household appliance, in particular for a washing machine, such as a dishwasher |
| KR20170007974A (en) * | 2015-07-13 | 2017-01-23 | 삼성전자주식회사 | Door locking device and fabric treating apparatus having the same |
| CN206581722U (en) * | 2017-03-20 | 2017-10-24 | 杭州东城电子有限公司 | A kind of motor-driven electric control lock |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019190975A1 (en) | 2019-10-03 |
| EP3775351A1 (en) | 2021-02-17 |
| EP3775351B1 (en) | 2023-05-03 |
| IT201800004000A1 (en) | 2019-09-27 |
| CN112272719A (en) | 2021-01-26 |
| PL3775351T3 (en) | 2023-08-21 |
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