EP1001069B1 - Device to remotely open doors, in particular of washing-machines - Google Patents
Device to remotely open doors, in particular of washing-machines Download PDFInfo
- Publication number
- EP1001069B1 EP1001069B1 EP98110197A EP98110197A EP1001069B1 EP 1001069 B1 EP1001069 B1 EP 1001069B1 EP 98110197 A EP98110197 A EP 98110197A EP 98110197 A EP98110197 A EP 98110197A EP 1001069 B1 EP1001069 B1 EP 1001069B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slide
- door
- hook
- spring
- blade
- 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
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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
Definitions
- This invention refers to a device, in particular for washing-machines, the purpose of which is to open the machine door from a distance by means of the push-button positioned on the control panel, the said device also houses the instantaneous locking device and delayed door release device, usually known as door lock.
- electro-mechanical devices are considerably more expensive, due to the fact that as has been mentioned mechanical devices operate by displacing the closure hook,require a considerable excursion of the push-button during the opening phase, hence a high degree of precision is required in the working dimensional tolerances of the cable, and requiring considerable force to be exerted on the push-button.
- An electro-mechanical device is disclosed, for instance, by EP-A-0 600 390.
- the device subject of the invention is based on a mechanical design and its fundamental advantage is that of releasing the machine door hook and therefore the subsequent opening of the machine door by exerting a limited force on the control push-button and requiring a short excursion of the push-button as in electro-mechanical devices.
- An additional advantage of the invention is that it can also operate with a fixed machine door hook design, though its application and correct operation continue to be possible on swinging machine door hook designs.
- a further advantage is that of allowing the conversion from a mechanical device to an electro-mechanical device by replacing the wire actuated device that operates the release mechanism with an electromagnet.
- the said electromagnet has a much smaller size compared with the size required for known electro-mechanical devices and this is made possible since only a small force is required resulting from the device features that shall be described below.
- the invention is characterised by the fact that whereas for known mechanical devices all the work to release the machine door closure hook is performed by the force exerted on the release push-button and therefore a significant force is required to adjust the hook and an extended excursion of the push-button is necessary, for the device subject of the invention the hook is engaged by means of a swinging blade positioned under the hook and the force required to release the machine door closure is exerted by a spring that is pre-compressed by the hook itself during the door closure phase and consequently the force exerted on the machine door opening push-button is limited to the force required to overcome the friction between two small surfaces in contact, therefore the movement of one of the two surfaces causes the previously pre-compressed spring to expand as specified in claim 1.
- the device consists of a body (3) which houses various parts making up the device itself.
- the machine door locking device is not shown in the drawings, but is part of a separate body housed inside body (3) of the device as foreseen in the invention, behind the components that impart the locking and release action to the machine door hook.
- the various device components are housed inside body (3):
- the said device includes other components which have a safety function, to prevent machine operation with the door open, or when the door is not closed securely.
- a first safety device consists of a third extension (14) positioned in relation to the cursor rear section (5) which, when the machine door is in the open position, lies under latch (4) of the door locking device preventing it from completing the closure phase should the machine be operated with the door in the open position.
- Another safety device consists of a fourth extension (15) that forms a rear extension of the second blade holder slide (8) which in the event the hook is not securely closed, positions itself under the machine door locking latch (4) preventing it from completing the closure phase and consequently inhibiting operation of the machine, (refer to fig. 8 which represents one of the hook positions during the opening phase, but can correspond to a hook position when the door is in a partially closed condition).
- the mechanism operates as follows.
- cursor (5) With the door in the open position (refer to fig.1, 2 and 3) cursor (5) is in the fully forward position; the first spring (6) is extended and the fourth spring (12) and third spring (13) are also extended.
- the third extension (14) of cursor (5) is positioned under the machine door locking latch (4), acting as a safety mechanism.
- the second blade holder slide (8) is also in the fully forward position with the corresponding second spring (10) also extended, (refer to fig. 2).
- the third slide (11) is fully inserted inside its seat with its surface (18) resting against surface (17) of the first slide (7).
- the first extension (7') of the first slide (7) which as mentioned previously is introduced inside the body of the second blade carrier slide (8), and the corresponding rear wall of the second blade holder slide (8), against which the said first extension (7') pushes during the release phase, are not in contact with one other but an empty gap of a few tenths of a millimetre exists between the two parts.
- the machine door locking latch (4) returns to its retracted position with the appropriate delay leaving seat (20) vacant on completion of the washing operation, refer to figures 7, 8 and 9.
- the small gap between the first extension (7') of the first slide (7) and the corresponding surface of the second blade carrier slide (8) ensures the latter is firstly pushed by the first extension (7'), this serves the purpose of overcoming the initial separation friction between the hook locking blade (9) and the edge of the hook (2) which rests on blade (9).
- the third slide (11) may be connected to the door opening push-button on the control panel also by a small and low-energy electromagnet.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Mechanical Control Devices (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
Description
- This invention refers to a device, in particular for washing-machines, the purpose of which is to open the machine door from a distance by means of the push-button positioned on the control panel, the said device also houses the instantaneous locking device and delayed door release device, usually known as door lock.
- Both electromagnetic and mechanical devices of this kind 'already exist and are well known, the latter designs usually operate on the swinging type closure hook causing the engaging tooth of the hook itself to retract.
- Moreover, electro-mechanical devices are considerably more expensive, due to the fact that as has been mentioned mechanical devices operate by displacing the closure hook,require a considerable excursion of the push-button during the opening phase, hence a high degree of precision is required in the working dimensional tolerances of the cable, and requiring considerable force to be exerted on the push-button.
- An electro-mechanical device is disclosed, for instance, by EP-A-0 600 390.
- The device subject of the invention is based on a mechanical design and its fundamental advantage is that of releasing the machine door hook and therefore the subsequent opening of the machine door by exerting a limited force on the control push-button and requiring a short excursion of the push-button as in electro-mechanical devices.
- An additional advantage of the invention is that it can also operate with a fixed machine door hook design, though its application and correct operation continue to be possible on swinging machine door hook designs.
- A further advantage is that of allowing the conversion from a mechanical device to an electro-mechanical device by replacing the wire actuated device that operates the release mechanism with an electromagnet. However, the said electromagnet has a much smaller size compared with the size required for known electro-mechanical devices and this is made possible since only a small force is required resulting from the device features that shall be described below.
- The invention is characterised by the fact that whereas for known mechanical devices all the work to release the machine door closure hook is performed by the force exerted on the release push-button and therefore a significant force is required to adjust the hook and an extended excursion of the push-button is necessary, for the device subject of the invention the hook is engaged by means of a swinging blade positioned under the hook and the force required to release the machine door closure is exerted by a spring that is pre-compressed by the hook itself during the door closure phase and consequently the force exerted on the machine door opening push-button is limited to the force required to overcome the friction between two small surfaces in contact, therefore the movement of one of the two surfaces causes the previously pre-compressed spring to expand as specified in
claim 1. - The invention will be more clearly understood through the description of an example of fulfilments provided solely for the purposes of illustration and is not exhaustive, as detailed by the three attached drawings which represent:
- figs. 1 - 2 - 3 -
- the device in the rest position and namely with the door open: fig. 1 viewed from below without the bottom cover of the body housing the various parts of the device; fig. 2 in cross-section; fig. 3 viewed from above without the cover, respectively;
- figs. 4 - 5 - 6 -
- the device with the door closed:
- fig. 4 viewed from below without the bottom cover of the body housing the various parts of the device; and fig. 5 in cross-section; and fig. 6 viewed from above, without the cover, respectively;
- figs. 7 - 8 - 9 -
- the device in the opening phase:
- fig. 7 viewed from below without the bottom cover of the body housing the various parts of the device; fig. 8 in cross-section; fig. 9 viewed from above without the cover, respectively.
- With reference to figures 1 to 9 both (1) the device according to the invention and (2) the door hook of a washing-machine.
- The device consists of a body (3) which houses various parts making up the device itself.
- (4) indicates the machine door locking latch the function of which, once the washing-machine door has been closed and the operating command has been activated, is to instantly operate the door locking mechanism and at the end of the washing cycle to impart the delayed action to the door release mechanism.
- The machine door locking device is not shown in the drawings, but is part of a separate body housed inside body (3) of the device as foreseen in the invention, behind the components that impart the locking and release action to the machine door hook. The various device components are housed inside body (3):
- a cursor (5) in the upper section on which a first spring (6) is inserted;
- a first slide (7) positioned behind this cursor (5) which pushes against the rear end of said first spring (6) and has a first extension (7') in the lower section that fits inside a second slide (8) which carries the hook locking blade (9) in the front section;
- a second spring (10) inserted between the front wall of the second slide (8) and the wall of the first extension (7') of the first slide (7) therefore by exerting pressure on blade (9) of the second slide (8) the said second spring retracts to move subsequently forward after the pressure is released;
- a third slide (11) positioned behind the first slide (7) which moves sideways with respect to the first slide (7) and that pushes against a surface (17) of the first slide (7) with one of its surfaces (18) when in the rest position, making it possible in given conditions to keep the first spring (6) compressed; the two surfaces (17, 18) are small thereby minimising friction during the separation phase;
- a wire (16) with one end connected to the lower part of the third slide (11) and the other end connected to the release push-button, (not shown in the figure);
- a third spring (13) positioned in the rear section of the device, between the rear part of the body (3) and the cursor end (5);
- a fourth spring (12) positioned between one side wall of body (3) and a second extension (19) of the third slide (11).
- These are the main components of the device which serve to operate the remote locking and release mechanisms of the machine door hook, but the said device includes other components which have a safety function, to prevent machine operation with the door open, or when the door is not closed securely.
- A first safety device consists of a third extension (14) positioned in relation to the cursor rear section (5) which, when the machine door is in the open position, lies under latch (4) of the door locking device preventing it from completing the closure phase should the machine be operated with the door in the open position.
- Another safety device consists of a fourth extension (15) that forms a rear extension of the second blade holder slide (8) which in the event the hook is not securely closed, positions itself under the machine door locking latch (4) preventing it from completing the closure phase and consequently inhibiting operation of the machine, (refer to fig. 8 which represents one of the hook positions during the opening phase, but can correspond to a hook position when the door is in a partially closed condition).
- The mechanism operates as follows.
- With the door in the open position (refer to fig.1, 2 and 3) cursor (5) is in the fully forward position; the first spring (6) is extended and the fourth spring (12) and third spring (13) are also extended.
- The third extension (14) of cursor (5) is positioned under the machine door locking latch (4), acting as a safety mechanism. The second blade holder slide (8) is also in the fully forward position with the corresponding second spring (10) also extended, (refer to fig. 2).
- The third slide (11) is fully inserted inside its seat with its surface (18) resting against surface (17) of the first slide (7).
- When hook (2) is introduced, refer to fig. 4, 5 and 6 the said hook enters with his head and causes the hook locking blade (9) and the front section of cursor (5) to move backwards therefore compressing the first spring (6) and the second spring (10). Once the hook head moves beyond blade (9) the second spring (10) expands carrying blade (9) under the hook edge, while the hook head maintains its pressure against the forward section of cursor (5), maintaining the first spring (6) compressed against the first slide (7) and maintaining the third spring (13) also compressed. By this arrangement of the various device components, according to the invention, when the machine is operated, the door closing latch (4) can move into its seat (20) in the third slide (11) thereby securing the third release slide (11) (refer to fig. 4, 5 and 6) and preventing the door from opening during the complete washing cycle.
- It must be noted that with the various components of the device arranged as described above, the first extension (7') of the first slide (7), which as mentioned previously is introduced inside the body of the second blade carrier slide (8), and the corresponding rear wall of the second blade holder slide (8), against which the said first extension (7') pushes during the release phase, are not in contact with one other but an empty gap of a few tenths of a millimetre exists between the two parts.
- The machine door locking latch (4) returns to its retracted position with the appropriate delay leaving seat (20) vacant on completion of the washing operation, refer to figures 7, 8 and 9.
- Pressing the operating push-button located on the machine control panel by means of wire (16) in this condition displaces the third release slide (11), which requires very little force, since only the friction between the parts in contact (17) of the first slide (7) and (18) of the third slide (11) needs to be overcome. The first spring (6) is subsequently able to extend itself at the rear and to pull the first slide (7) backwards, while the first slide (7) will pull, by its first extension (7'), the second blade holder slide (8) and the blade (9), enabling the machine door hook (2) to disengage (refer to fig. 8).
- The small gap between the first extension (7') of the first slide (7) and the corresponding surface of the second blade carrier slide (8) ensures the latter is firstly pushed by the first extension (7'), this serves the purpose of overcoming the initial separation friction between the hook locking blade (9) and the edge of the hook (2) which rests on blade (9).
- Once hook (2) has moved out of its seat, the expansion of the cursor resetting spring (13) returns cursor (5), second blade holder slide (8) and first slide (7) to their initial position; in addition, the expansion of the fourth spring (12) returns the third slide (11) to its initial position, as shown in fig.1, 2 and 3.
- The third slide (11) may be connected to the door opening push-button on the control panel also by a small and low-energy electromagnet.
Claims (10)
- Device to remotely open doors, in particular of washing machines, comprising a body (3) wherein mechanical sliding means for blocking and releasing the machine door closing hook (2) are arranged, characterized in that the mechanical sliding means for blocking and releasing the door closing hook (2) comprise a cursor (5) slidably arranged in said body (3), a first slide (7) slidably pushed towards the rear portion of the cursor (5) by a first spring (6) that is pre-compressed by the front portion of the cursor (5) urged by the hook (2) during the door closing phase, a second slide (8) carrying a blade (9) at the front portion thereof for blocking the door closing hook (2), with the first slide (7) having a first extension (7') cooperating with said second slide (8), the device further comprising a third slide (11) having a surface (18) resting against a corresponding surface (17) of the first slide (7) when the door is in the closed position, thus preventing said first slide (7) from being pushed rearwards by the pre-compressed first spring (6), the third slide (11) being operatively connected to a door opening push-button on a control panel of the machine, so that upon exerting a force on the door opening push-button said third slide (11) is actuated to release said surface (17) of the first slide (7) from resting against the corresponding surface (18) of the third slide (11), thus making said first slide (7) free to be pushed rearwards by the pre-compressed first spring (6) and to accompany the blade-carrying second slide (8) rearwards by its first extension (7'), so as to withdraw the blade (9) to a position suitable to release the door closing hook (2).
- Device according to claim 1, characterized in that the second slide (8) and the blade (9) are subjected to the action of a second spring (10), which is compressed upon insertion of the door closing hook (2) by the backward thrust that the blade (9) receives from the hook head, said second spring (10) expanding once the hook head has passed through, so as to cause the blade (9) to engage under the hook edge.
- Device according to claim 1, characterized in that a third spring (13) is arranged between the cursor (5) and the body (3), said third spring (13) being compressed by the hook head upon insertion of the door closing hook (2) and expanded again once the door closing hook (2) has been released, so as to cause the cursor (5) and the first slide (7) and second slide (8) to return to their positions of rest.
- Device according to claim 1, characterized in that the third slide (11) comprises a second extension (19), a fourth spring (12) being arranged between said second extension (19) of the third slide (11) and the body (3), said fourth spring (12) being compressed by displacement of said third slide (11) upon exerting a force on the door opening push-button, once the door closing hook (2) has been released said fourth spring (12) expanding to push the third slide (11) to its reset position.
- Device according to claim 1, characterized in that the body (3) further houses a door locking device suitable to lock the third slide (11) during operation of the machine by means of a latch (4).
- Device according to claim 5, characterized in that the cursor (5) has a third extension (14) on its rear section, which is placed under the latch (4) of the door locking device when the hook (2) is in a door open position to prevent the latch (4) from dropping when the door is open, in the event the machine start control is operated in these conditions.
- Device according to claim 5, characterized in that the blade-carrying second slide (8) has a fourth extension (15) on its rear section, which is placed under the latch (4) of the door locking device when the hook (2) is in a position wherein the door is not securely closed to prevent the latch (4) from dropping when the door is not securely closed.
- Device according to claim 1, characterized in that the first extension (7') of the first slide (7) and a facing wall of the cooperating second slide (8) are spaced by a small gap, so that, upon expansion of the pre-compressed first spring (6) during the releasing phase of the door closing hook (2), the first extension (7'), before accompanying the second slide (8) rearwards, pushes against it to overcome the initial separation friction between the blade (9) and the engaging edge of the hook (2) resting against the blade (9).
- Device according to claim 1, characterized in that the third slide (11) is connected to the door opening push-button on a control panel of the machine by a flexible wire (16).
- Device according to claim 1, characterized in that the third slide (11) is connected to the door opening push-button on a control panel of the machine by a small and low-energy electromagnet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9830576T SI1001069T1 (en) | 1997-12-23 | 1998-06-04 | Device to remotely open doors, in particular of washing-machines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI972852 | 1997-12-23 | ||
IT97MI002852A IT1297937B1 (en) | 1997-12-23 | 1997-12-23 | DEVICE FOR REMOTE OPENING OF DOORS IN PARTICULAR OF WASHING MACHINES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1001069A1 EP1001069A1 (en) | 2000-05-17 |
EP1001069B1 true EP1001069B1 (en) | 2003-11-12 |
Family
ID=11378435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98110197A Expired - Lifetime EP1001069B1 (en) | 1997-12-23 | 1998-06-04 | Device to remotely open doors, in particular of washing-machines |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1001069B1 (en) |
AT (1) | ATE254201T1 (en) |
BR (1) | BR9804657A (en) |
DE (1) | DE69819734T2 (en) |
ES (1) | ES2210618T3 (en) |
IT (1) | IT1297937B1 (en) |
PL (1) | PL186401B1 (en) |
SI (1) | SI1001069T1 (en) |
TR (1) | TR199801259A3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009019224B4 (en) | 2008-04-30 | 2016-06-09 | Lg Electronics Inc. | Machine for treating textile and leather goods |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3426738C2 (en) * | 1984-07-20 | 1994-06-09 | Ymos Ag Ind Produkte | Door lock, in particular for a household machine |
DE8806999U1 (en) * | 1988-05-28 | 1988-07-28 | Ellenberger & Poensgen Gmbh, 8503 Altdorf, De | |
EP0481503A1 (en) * | 1990-10-17 | 1992-04-22 | Zanker GmbH | Door lock for household appliance |
IT227025Y1 (en) * | 1992-12-01 | 1997-09-09 | Gavazzi Carlo Electromatic | SAFETY DOOR LOCK STRUCTURE PARTICULARLY FOR LAUNDRY MACHINES WITH ELECTRONIC SYSTEM ON BOARD |
-
1997
- 1997-12-23 IT IT97MI002852A patent/IT1297937B1/en active IP Right Grant
-
1998
- 1998-06-04 SI SI9830576T patent/SI1001069T1/en unknown
- 1998-06-04 ES ES98110197T patent/ES2210618T3/en not_active Expired - Lifetime
- 1998-06-04 DE DE69819734T patent/DE69819734T2/en not_active Expired - Lifetime
- 1998-06-04 AT AT98110197T patent/ATE254201T1/en not_active IP Right Cessation
- 1998-06-04 EP EP98110197A patent/EP1001069B1/en not_active Expired - Lifetime
- 1998-06-30 PL PL98327123A patent/PL186401B1/en not_active IP Right Cessation
- 1998-06-30 TR TR1998/01259A patent/TR199801259A3/en unknown
- 1998-11-17 BR BR9804657-8A patent/BR9804657A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SI1001069T1 (en) | 2004-02-29 |
ATE254201T1 (en) | 2003-11-15 |
TR199801259A2 (en) | 1999-07-21 |
DE69819734D1 (en) | 2003-12-18 |
PL327123A1 (en) | 1999-07-05 |
BR9804657A (en) | 1999-11-16 |
IT1297937B1 (en) | 1999-12-20 |
ITMI972852A1 (en) | 1999-06-23 |
TR199801259A3 (en) | 1999-07-21 |
ES2210618T3 (en) | 2004-07-01 |
DE69819734T2 (en) | 2004-09-23 |
PL186401B1 (en) | 2004-01-30 |
EP1001069A1 (en) | 2000-05-17 |
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