EP1874173B1 - Dish washing machine - Google Patents

Abstract

The closing mechanism has a spring-loaded carriage (4) with closing hook (6) which moves in and out of engagement with the closing element (2) during closing and opening. During closing a rotary latch (8) can be brought into interaction with the closing element and through this interaction acts on the carriage so that the latter is moved by the spring force (5) into the locking position as the door is closed. The rotary catch acts through a lever (11) on the carriage. The lever preferably has a slide guide (12) which interacts with a ledge (13) on the carriage so that during closing the lever moves the carriage.

Description

The invention relates to a dishwasher according to the preamble of patent claim 1.

Dishwashers have a door to allow loading and / or unloading. For closing, the door cooperates with a closure.

Such a closure for the movable closing element for the door may be attached to the body of the dishwasher. The closure has a closing hook, which in turn can be brought out of engagement with the closing element when closing in and / or upon opening. The disadvantage of such a closure is the high closing force for closing the closing element.

From the US 5,775,748 For example, a shutter for a cover of an audio device is known, which has a carriage on which a hook is arranged. In a first position of the carriage, a rotational force acting on the hook is provided by the spring. In a second position, in which the hook is released from an engagement position defining a closure position, the hook is urged back by the spring.

From the EP 0 727 148 A2 a closure device for the door of a dishwasher is known, which has a toggle device, a pivotally guided latch and a hinged to a latch closure and control. For opening and closing, the shutter and control element, together with the hinged latch, is moved from a stable end position to a position "over one dead center position into another stable end position or closed position." The pivotally mounted latch and the closure and control element are also equipped with Help a common guide element connected to each other and the closure and control housing side slidably and pivotally mounted.

The invention has for its object to further develop the closure, that the closing force is reduced.

This object is achieved in a closure by the features of claim 1.

In the closure according to the invention, the closing hook is arranged on a carriage which is movable between a locking position and an unlocking position. The carriage is loaded by a spring in the direction of the locking position. The closure further comprises a rotary latch which can be brought into engagement with the closing element when closing. The catch acts due to this interaction in such a way on the carriage that the carriage is moved when closing the closing element by the force of the spring in the locking position. Further embodiments of the invention are the subject of the dependent claims.

Conveniently, the carriage is arranged in a housing, so that the closure is a pre-assembled component. The rotary latch is rotatably mounted in and / or on the housing, in such a way that the rotary latch protrudes, for example, at an opening from the housing for cooperation with the closing element. In the housing, a guide is arranged, in which the carriage engages by means of pins to the movement in the locking position, which increases the reliability of the closure accordingly.

The action of the catch on the carriage can be done in a simple manner by means of a lever. The lever is a backdrop, which in turn interacts with an approach on the slide. As a result, when closing the lever moves the carriage in the guide.

It makes sense that the spring is designed as a tension spring. The spring is attached to a suspension on the carriage and to a suspension in the housing by appropriate hooking. Preferably, the spring engages on the carriage so that when opening the closing element, a force acts on the carriage in the unlocking position, so that the carriage then snaps over the gate on the lever in the unlocked position. This force can be achieved in a simple manner by an offset of the suspension relative to the suspension in the locked position.

The closing of the closing element is advantageously effected by the engagement of the closing hook with a trough in the closing element. If the catch accidentally triggered manually without the closing element would have been closed, it can still be made possible by the following embodiment, the closing of the closing element. For this purpose, the locking hook is mounted resiliently in the carriage. Furthermore, the closing hook has a starting slope for the closing element. When closing the closing element is then pressed due to the Anfahrschräge the locking hooks in the carriage and then slides back into the trough of the closing element.

Finally, the closure can also be configured with a view to improving the parental control. For this purpose, a locking pin is in the locking position in engagement with the guide, in such a way that the movement of the pin is blocked on the carriage. This locking pin can be brought out of engagement with the guide in the manner of a child safety to open the closing element by notching. For manual actuation of the locking pin, in turn, a lever accessible from outside the housing is arranged on the closure.

The advantages achieved by the invention are, in particular, that the closure is functionally reliable and has an improved assembly capability. In addition, the closure is cost-effective despite high functionality and thus particularly suitable for cost-sensitive household appliances.

Fig. 1

einen Verschluss in Explosionsdarstellung,

Fig. 2

den Verschluss aus Fig. 1 in verriegelnden Eingriff mit dem Schließelement,

Fig. 3

den Verschluss in perspektivischer Ansicht von einer Seite gesehen,

Fig. 4

den Verschluss wie in Fig. 3 von der anderen Seite gesehen,

Fig. 5

einen Schnitt durch den Verschluss, wobei der Schlitten in Verriegelungsposition befindlich ist,

Fig. 6

einen Schnitt wie in Fig. 5, jedoch von der gegenüberliegenden Seite gesehen,

Fig. 7

einen Schnitt durch den Verschluss, wobei der Schlitten in Entriegelungsposition befindlich ist, und

Fig. 8

einen Schnitt wie in Fig. 7, jedoch von der gegenüberliegenden Seite gesehen.

An embodiment of the invention with various developments and refinements is shown in the drawings and will be described in more detail below. Show it

Fig. 1

a closure in exploded view,

Fig. 2

the closure off Fig. 1 in locking engagement with the closing element,

Fig. 3

seen the shutter in perspective view from one side,

Fig. 4

the closure as in Fig. 3 seen from the other side,

Fig. 5

a section through the closure, wherein the carriage is in the locked position,

Fig. 6

a cut like in Fig. 5 but seen from the opposite side,

Fig. 7

a section through the closure, wherein the carriage is in the unlocked position, and

Fig. 8

a cut like in Fig. 7 but seen from the opposite side.

In Fig. 1 is a closure 1 for a movable closing element 2 according to its individual parts shown. When closing element 2, which is only indicated schematically, it is a door to a dishwasher with the closing element 2 is fixed in a known manner by means of a hinge movable on the body of the domestic appliance.

The closure 1 has a housing 3, in which a carriage 4 which can be moved between a locking position and an unlocking position is arranged. The locking position is closer in Fig. 5 and Fig. 6 as well as the unlocking position in FIGS. 7 and 8 to see. The carriage 4 is loaded by means of a spring 5 in the direction of the locking position. On the carriage 4, a closing hook 6 is arranged, which can be brought into engagement with the closing element 2 when closing the closing element 2, as shown in FIG Fig. 2 can be seen. For this purpose, the locking hook 6 can be brought into locking engagement with a recess 7 in the closing element 2. When the closure element 2 is opened, the closure hook 6 is disengaged from the closure element 2 by leaving the depression 7, but this is not shown in greater detail in the drawings.

How further the Fig. 1 can be seen, a rotary latch 8 is rotatably mounted in and / or on the housing 3. The rotary latch 8 can be brought in closing of the closing element 2 in cooperation with the closing element 2. Due to this interaction, the rotary latch 2 then acts on the carriage 4, that the slide 4 when closing the closing element 2 by the force of the spring 5 in the in Fig. 5 shown locking position is moved. For cooperation with the closing element 2, the rotary latch 8, which is arranged laterally on the housing 3, projects out of the housing 3, for example, at a type of opening 9 or projects beyond the housing 3, such as the housing Fig. 3 and Fig. 4 can be removed.

As based on the Fig. 5 or the Fig. 7 can be seen, a guide 10 is arranged in the housing 3 for the carriage 4 for its movement in the locking position. The catch 8 acts on the carriage 4 via a lever 11, for which purpose a link 12 is located on the lever 11. The link 12 on the lever 11 in turn interacts with a projection 13 on the carriage 4, in such a way that when closing the closing element 2, the lever 11 moves the carriage 4 by means of pins 20 in the guide 10.

The spring 5 is configured as a tension spring and attached to a suspension 14 on the carriage 4 and to a suspension 15 in the housing 3 by hanging. Furthermore, there is a displacement of the suspension 15 relative to the suspension 14 in the locking position, as shown in FIG Fig. 5 can be seen, so that the spring 5 acts on the carriage 4, that when opening the closing element 2, a force acting on the carriage 4 in the unlocking position.

The locking hook 6 is resiliently mounted in the carriage 4 by means of a compression spring 16, as in Fig. 1 you can see. Furthermore, the locking hook 6 has an in Fig. 5 visible Anfahrschräge 17 for the closing element 2, to allow a kind of self-healing effect, which will be explained in more detail below. Finally, in the locking position, a locking pin 18 is in engagement with the guide 10, whereby the movement of the pin 18 is blocked on the carriage 4. The locking pin 18 can be brought out of engagement with the guide 10 in the manner of a child safety to open the closing element 2 by notching. On the housing 3, an accessible from outside the housing 3 lever 19 for manual actuation of the locking pin 18 is arranged.

The operation of the closure 1 according to the invention with Nachziehweg will now be explained in more detail below, wherein the closing element 2 are referred to simplifying as a door and the home appliance with a dishwasher.

The shutter 1 independently holds the door 2 of the dishwasher with a closing force. By overcoming this force, the door 2 can be opened at any time.

When closing the door 2, this actuates the rotary latch 8. With the rotary latch 8, the carriage 4 is moved with the locking hook 6 down via the lever 11 with slide 12 until the slide 4 in its guide 10, pulled by the tension spring 5, after can slide behind. When moving down the hook 6 dives into a trough 7 of the door 2 and pulls them with. The tension spring pulls the door 2 against the rubber seal until the force balance. This closing process is also closer to Fig. 7 clarified.

When opening the lock hook 6 takes the carriage 4, until the carriage 4 can snap over the gate 12 of the lever 11 upwards. The door 2 is released. The catch 8 is again rotated by the lever 11 in the starting position. This opening process is also closer to Fig. 5 clarified.

As an additional function, a kind of self-healing effect is given. It may happen that the catch 8 accidentally by hand, without intervention of the door 2, is triggered. The shutter 1 is in the closed position and the door 2 is still open. For this case, the locking hook 6 is resiliently mounted in the carriage 4 and has on the outside a Anfahrschräge 17. The door 2 can thus be made with the shutter 1 closed. In this case, the spring-loaded locking hook 6 is pressed into the carriage 4 and then slides back into the trough 7 of the door 2, as soon as it is completely closed. After opening the door 2, the shutter 1 is again in the correct position.

As a further optional additional feature, a child safety device against accidental opening by children is attached. About the lever 19, which is accessible from the outside, to open the door 2, the locking pin 18, which prevents the upward movement of the carriage 4, be disengaged. The opening of the door 3 for venting at steam pressure is guaranteed. The child safety lock can be switched off and on.
With increased effort, the door 2 can be opened despite the child lock, for example, from the inside with pressure on the door. 2

The optimized solution according to the invention achieves the following advantages. By shifting the Zugfedereinhängepunktes in the carriage 4, the closing force is reduced. In the invention, the lever 11 is integrated with link 12 in the housing 3. A separate lever and thus also its assembly omitted. The rotary latch 8 now moves directly over a projection 13, the carriage 4 down. For independent provision of the catch 8, a spring is necessary. For better installation of the child safety the leg spring is replaced by a compression spring. A displacement of the pivot point is necessary to increase the holding force.

The invention is not limited to the described and illustrated embodiment. Rather, it also encompasses all expert developments within the scope of the invention defined by the claims. Conversely, the closure 1 can also be arranged on the movable closing element 2, wherein the closing hook 6 then engages in the body on the domestic appliance.

Claims (7)

1. Dishwashing machine with a lock for a movable closing element (2) for a door at the dishwashing machine, characterised by a slide (4) movable between a locking position and an unlocking position, wherein the slide (4) is loaded by means of a spring (5) in the direction of the locking position, with a closing hook (6) arranged at the slide (4), wherein the closing hook (6) can be brought into engagement with the closing element (2) during closing and/or brought of engagement with the closing element (2) during opening, and with a rotary latch (8) able to brought into co-operation with the closing element (2) during closing, characterised in that the rotary latch (8) so acts on the slide (4) by virtue of this co-operation that the slide (4) during closing of the closing element (2) is moved by the force of the spring (5) into the locking position.
2. Dishwashing machine according to claim 1, characterised in that the closing hook (6) can be brought into engagement with a trough (7) in the closing element (2).
3. Dishwashing machine according to claim 1 or 2, characterised in that the slide (4) is arranged in a housing (3), that the rotary latch (8) is preferably rotatably mounted in and/or at the housing (3), in particular in such a manner that the rotary latch (8) projects at an opening (9) out of the housing (3) for the co-operation with the closing element (2), and that for further preference a guide (10) for the slide (4) for the movement thereof into the locking position is arranged in the housing (3).
4. Dishwashing machine according to claim 1, 2 or 3, characterised in that the rotary latch (8) acts by way of a lever (11) on the slide (4), that preferably a detent (12) is disposed at the lever (11), and that for further preference the detent (12) at the lever (11) co-operates with a projection (13) at the slide (4), in particular in such a manner that on closing of the lever (11) the slide (4) in a given case moves by means of pins (20) in the guide (10).
5. Dishwashing machine according to any one of claims 1 to 4, characterised in that the spring (5) is formed as a tension spring, that preferably the spring (5) is fastened to hook-in means (14) at the slide (4) as well as to hook-on means (15) in the housing (3), and that for further preference the spring (5) so engages at the slide (4), in particular by offset of the hook-on means (15) relative to the hook-in means (14) in locking position, that on opening of the closing element (2) a force acts on the slide (4) in the direction of the unlocking position.
6. Dishwashing machine according to any one of claims 1 to 5, characterised in that the closing hook (6) is resiliently mounted in the slide (4) and that the closing hook (6) preferably has an entry chamfer (17) for the closing element (2).
7. Dishwashing machine according to any one of claims 1 to 6, characterised in that in the locking position a blocking pin (18), which blocks the pin (20) at the slide (4), is disposed in engagement with the guide (10), which for opening of the closing element (2) is, in the manner of a child safety lock, brought out of engagement with the guide (10), and that preferably a lever (19) accessible from outside the housing (3) is arranged for manual actuation of the blocking pin (18).

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