Household appliance with motorised mobile closing element

Abstract

The invention relates to a household appliance (1) with an interior (12) configured to receive at least one object to be treated through an access opening (13) along the longitudinal axis (X), with a locking element (14) configured to close and release the access opening (13) of the interior (12) from the front, and with a motor (18) configured to move the locking element (14) back and forth between a position closing the access opening (13) and a position releasing the access opening (13), wherein the motor (18) is fixedly connected to a clutch disc (19) by means of a motor shaft (18a) in order to drive the clutch disc (19) rotationally, wherein the clutch disc (19) is connected to the locking element (14) by means of a clutch bolt (17a) in a force-transmitting manner, and wherein the clutch disc (19) has a clutch-side guide contour (19a).which movably receives a first end of the coupling bolt (17a), wherein the coupling-side guide contour (19a) of the coupling disc (19) is present.

Description

[0001] The invention relates to a household appliance with a motor-driven locking element.

[0002] Cooking appliances are known which have a stationary cooking chamber integrated with the appliance, in which the food is placed in or on a cooking dish and cooked with the cooking chamber closed. Such a cooking appliance can be, for example, a conventional oven, a steamer, a combination oven / steamer, and the like. Such stationary cooking appliances typically have a height of approximately 45 cm along the vertical axis, at least in Germany, although conventional ovens with a height of approximately 60 cm are also common.

[0003] Such cooking appliances with a fixed cooking chamber have in common that they feature an outer casing, which essentially encloses the cooking appliance and protects its individual components and elements, while also making them easily accessible. Inside the cooking appliance, an interior space is formed, which constitutes the cooking chamber and is essentially enclosed by an inner casing, also known as the cooking chamber muffle or muffle. A cavity is formed between the inner and outer casings, in which functional elements of the cooking appliance, such as a control unit, an electrical power supply, and other components necessary for the intended use of the cooking appliance, can be located. From the front, i.e., viewed from the user's perspective, the outer casing...A cover in the form of furniture material or in the form of a control panel and the like, together with the inner housing, closes off the housing space, so that the housing space is not accessible to the user.

[0004] The interior of the cooking appliance features a front-facing access opening through which the user can enter and arrange cooking utensils within the cooking chamber. This opening also allows the user to remove the utensils after cooking. The access opening can be opened by means of a locking element, such as a side-hinged door, a downward-hinged flap, or similar device. This allows the user to access the interior of the cooking appliance as described above, or to close the interior and complete the cooking process. Such a locking element can be solid or have a viewing window to allow the user to see inside the closed interior of the cooking appliance.

[0005] Such cooking appliances with a fixed cooking chamber are typically designed as built-in appliances or kitchen units. This allows them to be installed in a space-saving manner, at a user-friendly height along the vertical axis of kitchen furniture, such as built-in cabinets. Their outer casing is fixed in place, and their closing element, and optionally their front panel (see above), are flush with the surfaces of other cooking appliances, drawers, doors, and the like, facing the user. This can improve the visual appearance for the user. However, such cooking appliances can also be designed as individual, freestanding units, which can be placed and operated, particularly on a worktop of a kitchen unit. This can simplify usage, purchase, and disposal.

[0006] In such cooking appliances, the closing element, such as a side-hinged door or a bottom-hinged flap, is operated manually by a user. This means the user grasps a handle, bar, or similar mechanism with the fingers of one hand and moves or pivots it back and forth between the fully open position for easy access to the cooking chamber and the fully closed position for cooking. This can also be achieved through a translational movement along the longitudinal axis, by extending and retracting the closing element. Mixed rotational-translational pivoting movements are also possible using suitable kinematics. In any case, intermediate positions are also possible, allowing the cooking chamber to be opened only slightly, for example, for ventilation or cooling after cooking.

[0007] To relieve the user of performing these movements between the fully open and fully closed positions, it is also known to use a drive, in particular an electric drive. This is shown, for example, in US document 2023 / 0084696 A1.

[0008] The pivoting movements described above are implemented by means of a rotary motor, in particular an electric one, which can transfer its rotational movement into a translational movement along the longitudinal axis by means of a crank, which can then, comparable to the movement of the user's hand, pivot the locking element back and forth or open and closed around its axis of rotation.

[0009] A problem with these types of cooking appliances featuring a motorized locking mechanism is that opening and closing the access opening via the locking mechanism can only be accomplished using the drive unit or motor. Otherwise, the force applied by the user to open or close the door is also partially transferred to the stationary motor, which can lead to motor failure. Because the locking mechanism is directly connected to the motor, any manual movement of the locking mechanism (in cases of misuse or when the appliance is unplugged) always results in force being transferred to the motor's gearbox. Under impact, this can lead to gearbox failure. Furthermore, the user is always working against the motor when manually operating the lock, which can create an uneasy feeling of worry about potentially damaging or destroying the cooking appliance or its motor.This also applies to other household appliances.

[0010] The invention addresses the problem of providing a household appliance, preferably a cooking appliance, with a motorized locking element, such that the locking element can still be moved or operated manually by the user without damaging the motor. At least one additional manual opening and closing operation in this sequence should be possible. In particular, the introduction of forces into the drive motor during manual movement of the movable locking element should be completely avoided. Specifically, manual movement of the movable locking element should be possible when the household appliance is unplugged. In particular, manual and motorized operation of the movable locking element should be possible sequentially. In any case, this should be as simple, space-saving, cost-effective, and / or low-maintenance as possible.At least an alternative to the known household appliances of this type should be created.

[0011] According to the invention, this problem is solved by a household appliance having the features of independent claim 1. Advantageous embodiments and further developments of the invention are set forth in the following dependent claims.

[0012] The invention thus relates to a household appliance with an interior which is designed to receive at least one object to be treated through an access opening along the longitudinal axis, with a closing element which is designed, preferably by pivoting by means of a pivoting element, preferably a hinge, to close and release the access opening of the interior from the front, and with a, preferably electric, motor which is designed to move the closing element back and forth between a position closing the access opening and a position releasing the access opening.

[0013] The household appliance can be a cooking appliance, but also any other household appliance such as a washing machine, dryer, or similar. In this case, the item to be treated can be laundry to be washed or dried. A cooking appliance can be a conventional oven, an oven with an integrated microwave, a microwave oven itself, a combination oven, a steam oven, a steam cooker, and similar appliances. In this case, the item to be treated can be food being cooked.

[0014] The household appliance is characterized in that the motor is fixedly connected to a clutch disc by means of a motor shaft in order to drive the clutch disc rotationally, wherein the clutch disc is connected to the locking element by means of a clutch bolt, preferably a crank, transmitting force, wherein the clutch disc has a clutch-side guide contour which movably receives a first end of the clutch bolt, wherein the clutch-side guide contour of the clutch disc has: at least one first handrail guide in which the first end of the coupling bolt is received and moved translationally back and forth relative to the stationary coupling disc if a user manually moves the locking element back and forth between the position closing the access opening and the position releasing the access opening, and at least one first motor guide in which the first end of the coupling bolt is received and moved rotationally back and forth by the rotating coupling disc if the motor moves the locking element back and forth between the position closing the access opening and the position releasing the access opening. where the first motor guide is formed by one end of the first handrail guide.

[0015] The previously described "back and forth" movement refers at least to the movement explicitly mentioned earlier, from the closed locking element to opening and then back to the starting position to closing, which can be done manually or, alternatively, with a motor. However, "back and forth" can also refer to the opposite movement, from the open locking element to opening and then closing again. Preferably, both movements are possible, as will be described in more detail below.

[0016] In any case, the combination of a first handrail guide and a first motor guide for a rotaryally driven clutch disc allows the clutch bolt to perform the previously known motorized movement of the locking element when the clutch disc is rotating, preferably due to the motor's electric motion. The parallel first handrail guide additionally allows the clutch bolt to move along the first handrail guide relative to the clutch disc when the clutch disc is stationary (i.e., when the electric motor is stationary), thus permitting movement of the locking element by manual operation by the user, without the user's manual operation or forces being transmitted to or acting upon the motor.

[0017] In other words, according to the invention, a bolt can be used to trace a specific contour. This contour includes at least one handrail and one motor housing. Since the force vector is translational for the handrail and rotational for the motor housing, a distinction can be made between the motor housing and the handrail.

[0018] Thus, according to the invention, the locking element can be opened and closed by means of the motor's operation. In addition, however, the user can now also open and close the locked element manually without acting on the motor, i.e., without applying any force to the motor. Alternatively, the reverse movement can also be performed manually.

[0019] Using a crank to transmit power to the clutch disc and locking element can be a simple way to convert the rotary motion of the motor-driven clutch disc into a translational motion, which can lead to the locking element pivoting open and closed.

[0020] The household appliance further features a fixed motor mount with a motor-side guide contour which movably receives a second opposite end of the coupling bolt, wherein the motor-side guide contour of the motor mount has: at least one handrail guide in which the second end of the coupling bolt is received and moved back and forth relative to the motor mount at least substantially translationally if a user manually moves the locking element back and forth between the position closing the access opening and the position releasing the access opening, and at least one motor guide in which the second end of the coupling bolt is received and moved back and forth in an arc by the rotating coupling disc if the motor moves the locking element back and forth between the position closing the access opening and the position releasing the access opening. where the handrail guide and the motor guide of the fixed motor mount merge into each other at both ends of their paths.

[0021] This allows for the creation of an additional guide contour that is fixed relative to the clutch disc, expanding the possibilities of the previously described movement sequence. In particular, this eliminates the need to fully complete the previously described back-and-forth movements before proceeding to an alternative movement. Instead, each movement can be performed and completed in one direction before transitioning directly into one of the other movements. This can increase the flexibility of operation.

[0022] In other words, in this case, the user could, for example, manually open a locked locking element and then have it closed again automatically. As previously described, this would normally require manually closing the locking element again to establish a starting position for the motorized movement. This is no longer necessary due to the motor-side guide contour of the motor mount.

[0023] According to the invention, the handrail guide of the clutch disc and / or the engine mount runs in a straight line, in particular radially through the axis of the engine shaft. The engine running guide of the clutch disc and / or the engine mount runs semicircularly around the axis of the engine shaft.

[0024] The invention is based on the understanding that a rotary motion over a 180-degree path can be generated in this way, since both motor guides are semicircular and thus formed as semicircles. This reduces the forces required to generate the respective motion and increases the time in which the locking element is moved, compared to a shorter rotary path of, for example, 90 or 120 degrees.

[0025] Furthermore, this allows the use of a toggle lever principle. This ensures that the force application is not linear (as with gears, for example), but is highest in the two end positions: the closing position and the opening position. As already mentioned, the use of a toggle lever is based on the idea that the most force is required to move the door's locking element in these two end positions. Due to the intended length of the semicircular motor guides, each with a 180-degree arc, these operating points—and thus the points of movement where the toggle lever generates the most force and where the most force is required to move the locking element—are precisely aligned, allowing the maximum available force to be utilized.

[0026] Furthermore, the design of the semi-circular motor guides of 180 degrees each allows for easier engagement and a safer transition of the bolt between the motor and handrail, thus preventing possible blockage.

[0027] Another aspect of the invention is that the motor drive has a freewheel in the form of a curved elongated slot. This elongated slot allows the locking element to fall into its end positions, which can give the user the impression of a smooth and high-quality movement of the locking element.

[0028] According to one aspect of the invention, the clutch-side guide contour of the clutch disc and the engine-side guide contour of the engine mount are identical. This can represent a concrete implementation possibility. In particular, this can simplify or ensure the desired interaction of the two guide contours.

[0029] According to a further aspect of the invention, the household appliance further comprises at least one spring element which is designed to essentially hold the locking element in the position releasing the access opening from the point at which a tipping point of movement is reached, and further a control unit which is designed to allow the motor to move the locking element only until the tipping point is reached and then to return the motor to its previous position.

[0030] The two semicircular guide contours allow the control of the drive unit to be modified or configured so that the motor only needs to extend the locking element until it begins to fall on its own due to its own weight. This can occur at an angle of approximately 15 to 20 degrees to the vertical, i.e., from the position of the access opening that is closing. The motor can then reverse its movement and return to the previous position, allowing a new movement sequence to begin.

[0031] This allows the motor to be subjected to significantly less current over its lifetime than with the aspects of the present invention described above, which can improve its longevity.

[0032] Furthermore, because the locking element is essentially "nudged" open by the motor rather than being forced open, misuse through human intervention in the motor's movement of the locking element is prevented. For example, if a person were to block the locking element after it has opened to a 15-degree angle, no force would be transmitted to the motor, as the locking element would already be in freewheeling mode. Therefore, the person cannot exert any direct force on the motor or the gearbox, thus protecting both.

[0033] According to a further aspect of the invention, the household appliance further comprises at least one spring element which is designed to close the locking element in the position closing the access opening once a closing point of movement has been exceeded, and furthermore a control unit which is designed to allow the motor to move the locking element only until the closing point is reached during the movement in the position closing the access opening, and then to return the motor to its previous position.

[0034] In comparison to the preceding aspect of the invention, the motor can thus only move the locking element a sufficient distance when closing, for example up to 75 degrees but not up to 90 degrees. The final part of the closing movement, for example 15 degrees, can then be achieved by the springs in the hinge drawing the locking element towards it, so that a smooth movement can also occur when closing.

[0035] According to a further aspect of the invention, the handrail guide and the motor running guide of the motor-side guide contour of the motor mount are separated radially from each other by means of a separating element of the motor-side guide contour of the motor mount and extend continuously around the separating element. Similarly, the first handrail guide and the first motor running guide of the clutch-side guide contour of the clutch disc are separated approximately radially from each other by means of a separating element of the clutch-side guide contour of the clutch disc and extend continuously around the separating element. This separating element can be part of the geometry but is not essential for fulfilling the function.

[0036] In this way, the translational and semicircular or arc-shaped movements can be guided separately, as the separating element prevents movement of the coupling bolt between the respective handrail guide and motor guide, thus securely guiding the coupling bolt either in the handrail guide or in the motor guide. The coupling bolt's movement around the separating element allows it to switch between the handrail guide and the motor guide, but only at the beginning and end of the movements, and not during the movement itself. The separating element prevents this.

[0037] One aspect is that the course of a handrail guide, described as straight and perpendicular to the motor shaft, is to be understood in particular as meaning that the handrail guide is aligned parallel to a plane in which the motor shaft lies.

[0038] An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows Figure 1 is a perspective view of a household appliance according to the invention in the form of a cooking appliance with the access opening open, viewed from a slightly oblique front and top view; Figure 2 is a side view with a partial longitudinal section of a connecting kinematic mechanism with an electric motor and clutch disc; Figure 3 is a top view with a partial longitudinal section through the connecting kinematic mechanism with clutch disc and motor mount; Figure 4 is a side view of a clutch disc with a guide contour on the clutch side; Figure 5 is a side view of a corresponding motor mount with a guide contour on the motor side; Figure 6 shows the coupling bolt of the connecting kinematic mechanism with clutch disc and motor mount in the position closing the access opening; Figure 7 shows the clutch disc in a rotational movement of a motorized opening into the position releasing the access opening, starting from the closing position of the Figure 6 Figure 8, the representation of Figure 7with the clutch disc moving into its starting position; Figure 9 the clutch disc in the position releasing the access opening as a result of the motor-driven opening of the electric motor along the motor direction of rotation Figure 7 and 8 Figure 10 shows the clutch disc in a rotary movement of a motorized closing mechanism into the position closing the access opening, starting from the releasing position of the Figure 9 Figure 11 shows the representation of Figure 10 with the clutch disc moving into its starting position; Figure 12 the clutch disc in the position closing the access opening as a result of the motor-driven closing of the electric motor along the motor direction of rotation of the Figures 10 and 11 Figure 13 shows the clutch disc in a translational movement of manual opening by a person into the position releasing the access opening, starting from the closing position of the Figure 12Figure 14 shows the clutch disc in the position releasing the access opening as a result of manual opening by the person along the handrail direction. Figure 13 ; and Figure 15 the clutch disc in a translational movement of a manual closing by a person into the position closing the access opening starting from the releasing position of the Figure 14 .

[0039] The figures above are viewed in Cartesian coordinates. A longitudinal axis X extends, which can also be called depth X or length X. Perpendicular to the longitudinal axis X extends a transverse axis Y, which can also be called width Y. Perpendicular to both the longitudinal axis X and the transverse axis Y extends a vertical axis Z, which can also be called height Z and corresponds to the direction of gravity. The longitudinal axis X and the transverse axis Y together form the horizontal X,Y, which can also be called the horizontal plane X,Y.

[0040] Figure 1 Figure 1 shows a perspective view of a household appliance 1 according to the invention in the form of a cooking appliance 1 with the access opening 13 open from a slanting front top view.

[0041] A household appliance 1 or cooking appliance 1 according to the invention is considered using the example of an oven 1. The oven 1 has an outer housing 10, which can also be referred to as the outer casing 10, and which essentially closes off or encloses the oven 1 to the outside. The outer housing 10 closes off along the longitudinal axis X to the front, i.e., towards the user, in its upper region with a panel 10a. An inner housing 11, which can also be referred to as the inner casing 11, is arranged inside the outer housing 10. The inner housing 11 closes off to the rear along the longitudinal axis X, downwards and upwards along the vertical axis Z, and on both sides along the transverse axis Y with the outer housing 10, so that a space is formed between the outer housing 10 and the inner housing 11, which can also be referred to as the casing space. This space represents the interior of the oven 1.

[0042] The inner housing 11 essentially encloses an interior space 12 in which a cooking process can be carried out. For this purpose, corresponding elements for heating the interior space 12 (not shown) are arranged in the space between the housings or in the cooking chamber 12. Accordingly, the interior space 12 can also be referred to as the cooking chamber 12.

[0043] The cooking chamber 12 is accessible to the user from the front along the longitudinal axis X through an access opening 13 located below the panel 10a. The access opening 13 can be opened and closed by means of a locking element 14 in the form of a flap 14. For this purpose, the flap 14 is connected to the outer housing 10 of the oven 1 by means of at least one hinge (not shown) so that it can pivot upwards about the transverse axis Y, allowing the user to pivot the flap 14 away from them to close the access opening 13 and downwards towards them to open the access opening 13 and access the cooking chamber 12. Figure 1 .

[0044] The cooking chamber 12 has a side wall 12a on each side along the transverse axis Y, on each of which a removable support grid 15 is arranged. A telescopic rail 16 is removablely attached to each support grid 15 at the same height along the vertical axis Z, forming a pair of telescopic rails 16. The telescopic rails 16 are each designed in three sections along the longitudinal axis X (not shown), such that a front rail section is connected to a rear rail section of the telescopic rail 16 by means of a middle rail section, the rear rail section being held fixedly and removablely on the respective support grid 15.

[0045] A cooking utensil, such as a baking tray (not shown), can be placed on the pair of telescopic rails 16 or their front rail elements by the user, so that it can be pushed into and pulled out of the cooking chamber 12 along the longitudinal axis X. This makes it easier for the user to insert and remove the baking tray from the cooking chamber 12.

[0046] Figure 2 shows a side view with partial longitudinal section of a connecting kinematic 17 with electric motor 18 and clutch disc 19.

[0047] The connecting kinematics 17 with electric motor 18 and clutch disc 19 is arranged laterally in the space between the oven 1 and can be used by the user to operate the flap 14 as a closing element 14 by motor, thus eliminating the need for manual operation. The motorized movement, in particular for opening the closed flap 14 and then again for closing the open flap 14, cf. Figure 1 , can be done by the user in particular by operating a corresponding control element (not shown), which may be located on the outside of flap 14 (not shown) and / or on aperture 10a (not shown).

[0048] To guide the connecting kinematics 17, the outer housing 10 has an inner guide element 10b pointing upwards along the vertical direction Z, which has a through-opening (not shown) along the longitudinal axis X. Facing the user along the longitudinal axis X, a locking element connection 14a, also called a blade 14a, is pivotably arranged on the front edge of the outer housing 10. The locking element 14 or flap 14 (not shown, see figure) Figure 1 ) is fixedly mounted on the locking element connection 14a and is therefore pivotable.

[0049] In the area at the rear along the longitudinal axis X, above the outer housing 10 or its underside (not shown), the aforementioned electric motor 18 is fixedly arranged by means of a motor mount 18b. The motor mount 18b is a disk on one side, which is fixedly arranged on the underside of the outer housing 10 in the space between the housing and the housing and has a through-opening (not shown) through which a motor shaft 18a projects. The electric motor 18 is fixedly arranged on one side of the disk-shaped motor mount 18b, so that the rotor (not shown) of the electric motor 18 can drive the motor shaft 18a, which projects from the electric motor 18 through the through-opening of the disk-shaped motor mount 18b to the opposite side.There, the aforementioned clutch disc 19 is fixedly arranged on the motor shaft 18a, so that the clutch disc 19 can be driven rotaryally by the electric motor 18.

[0050] The side of the clutch disc 19 facing away from the disc-like motor mount 18b has a clutch-side guide contour 19a, which is defined by the Figures 3 to 11 This will be described in more detail later. A coupling bolt 17a engages with a first end in the coupling-side guide contour 19a, so that a positive connection exists between the first end of the coupling bolt 17a and the coupling disc 19, which can transmit the force from the electric motor 18 to the coupling bolt 17a.

[0051] The coupling bolt 17a is rotatably mounted in a corresponding through-hole (not labeled) at one end of a crank 17b, which is rotatably connected at its opposite end to a guide rod 17c that is translationally movable along the longitudinal axis X and is guided by the through-hole of the aforementioned guide element 10b of the outer housing 10. The opposite end of the guide rod 17c is connected to the locking element connection 14a by means of a connecting element 17d in order to pivot it back and forth as previously mentioned.

[0052] If the electric motor 18 is now operated and its rotary motion is thereby transferred to the locking element connection 14a – as previously known – the flap 14 can be moved back and forth between a position closing the access opening 13 and a position opening the access opening 13, as already mentioned. According to the invention, the rotary motion of the electric motor 18 can be converted into a translational motion by means of the coupling disc 19, the coupling bolt 17a and the crank 17b, which can pivot the flap 14 open and closed.

[0053] According to the invention, a handrail guide 19b of the clutch disc 19 is also provided as part of the clutch-side guide contour 19a, see e.g. Figures 3 and 4The first end of the coupling bolt 17a is always movably received or guided by the coupling-side guide contour 19a, so that the rotational movement of the clutch disc 19 can be transferred to the coupling bolt 17a if the coupling bolt 17a is located in the motor running guide 19d.

[0054] At the same time, according to the invention, it is also possible for the coupling bolt 17a to be moved translationally along the handrail guide 19b of the stationary, i.e., non-motor-driven, coupling disc 19 if the user opens and closes the flap 14 by hand. In this case, the force of the user's manual movement is not transmitted to the stationary electric motor 18, so that the motor 18 cannot be damaged by the user's manual movements.

[0055] Figure 3shows a top view with partial longitudinal section through the connection kinematics 17 with clutch disc 19 and motor mount 18b.

[0056] The motor guide 18b is extended by a second disc, so that the two discs (not labelled) of the motor guide 18b accommodate the clutch disc 19 and the end of the crank 17b with the clutch bolt 17a between them ( Figure 3 (shows only the disc of the motor guide 18b with the motor-side guide contour 18c). The coupling bolt 17a is extended so that a second end of the coupling bolt 17a, opposite the first end, engages in the motor-side guide contour 18c of the second disc of the motor guide 18b, see Figure 12 , and can be conducted there.

[0057] Figure 4 shows a side view of a clutch disc 19 with clutch-side guide contour 19a. Figure 5shows a side view of a corresponding motor mount 18b with motor-side guide contour 18c.

[0058] The clutch-side guide contour 19a of the clutch disc 19 has the first handrail guide 19b, which extends radially through the axis of the motor shaft 18a, and the first motor running guide 19d, which runs semicircularly around the axis of the motor shaft 18a. The first handrail guide 19b and the first motor running guide 19d of the clutch-side guide contour 19a of the clutch disc 19 merge into one another.

[0059] The motor-side guide contour 18c of the motor mount 18b includes the handrail guide 18b, which extends radially through the axis of the motor shaft 18a, and the motor running guide 18e, which runs semicircularly around the axis of the motor shaft 18a. The handrail guide 18b and the motor running guide 18e of the motor-side guide contour 18c of the motor mount 18b merge seamlessly.

[0060] The clutch-side guide contour 19a of the clutch disc 19 and the engine-side guide contour 18c of the engine mount 18b are identical in design.

[0061] The handrail guide 18d and the motor running guide 18e of the motor-side guide contour 18c of the motor mount 18b are separated radially from each other by means of a separating element 18f of the motor-side guide contour 18c of the motor mount 18b and run continuously around the separating element 18f. Likewise, the first handrail guide 19b and the first motor running guide 19d of the clutch-side guide contour 19a of the clutch disc 19 are separated radially from each other by means of a separating element 19f of the clutch-side guide contour 19a of the clutch disc 19 and run continuously around the separating element 19f.

[0062] Furthermore, the household appliance has a spring element designed to essentially hold the locking element 14 in the position releasing the access opening 13 once a tipping point of movement is reached. In addition, the household appliance has a control unit (not shown) designed to cause the motor 18 to move the locking element 14 into the position releasing the access opening 13 only until the tipping point is reached, and then to return the motor 18 to its previous position.

[0063] Likewise, the household appliance has a spring element which is designed to close the locking element 14 into the position closing the access opening 13 once a closing point of movement has been exceeded, and the control unit is further designed to allow the motor 18 to move the locking element 14 only until the closing point is reached during the movement into the position closing the access opening 13 and then to return the motor 18 to its previous position.

[0064] The motorized and manual opening and closing of the locking element 14 of the household appliance 1 can now be carried out as follows: Figure 6 shows the coupling bolt 17a of the connecting kinematics 17 with coupling disc 19 and motor mount 18b in the position closing the access opening 13.

[0065] The motor-side guide contour 18c and the coupling-side guide contour 19a are congruent. The coupling bolt 17a is located to the right along the longitudinal axis X, or, from the perspective of the connection kinematics 17, at the rear. The locking element 14 is thus in the position that closes the access opening 13.

[0066] Figure 7 The clutch disc 19 is shown in a rotary movement B of a motorized opening into the position releasing the access opening 14, starting from the closing position of the Figure 6 .

[0067] Thus, motor 18 is now controlled by the control unit according to the illustration of the Figure 7The clutch disc 19 is operated counterclockwise, rotating to the left, so that it rotates accordingly. The clutch disc 19, or rather its clutch-side guide contour 19a, carries the clutch bolt 17a along the engine-side guide contour 18c, so that the clutch bolt 17a moves in a semi-circular arc in the direction of engine rotation B within the overlapping engine guides 18e of the engine mount 18b and the engine guide 19d of the clutch disc 19.

[0068] Figure 8 shows the representation of Figure 7 with the clutch disc moving into its starting position 19.

[0069] If the movement of the coupling bolt 18b falls below the specified limit, the movement of the coupling bolt 18b is less than the specified limit. Figure 7Namely, at the previously mentioned tipping point, which lies at approximately 15 to 20 degrees of the semi-circular movement, gravity is sufficient to open the locking element further and move it completely into the position releasing the access opening 14. Thanks to the spring element, this movement is dampened to such an extent that a uniform motion is achieved. Accordingly, the remaining movement can be carried out without the motor 18, so that the motor 18 is moved back to its previous position as the starting position in the motor direction B as soon as the tipping point is reached.

[0070] Figure 9 The clutch disc 19 is shown in the position releasing the access opening 14 as a result of the motor-driven opening of the electric motor 18 along the motor direction B. Figure 7 and 8 . Now the access opening 14 is open and the user can access the interior 12 of the household appliance 1.

[0071] Figure 10 The clutch disc 19 is shown in a rotary movement of a motorized closing into the position closing the access opening, starting from the releasing position of the Figure 9 .

[0072] Now the clutch disc 19 is moved by the motor 18 in the direction of motor rotation B in a clockwise direction, so that the clutch bolt 17a is moved again in a semi-circular motion in the overlapping motor guides 18e of the motor mount 18b and motor guide 19d of the clutch disc 19.

[0073] Figure 11 shows the representation of Figure 10with the clutch disc 19 moving into its initial position. In this case, too, the motor 18 can return the clutch disc 19 to its previous initial position if the remaining movement can be completed without the motor 18. This occurs here when a closing point is exceeded at approximately 75 degrees of the movement already completed, i.e., when only about 15 degrees of movement remain, since a spring element can then also act and pull the locking element into the position that closes the access opening.

[0074] Figure 12 The clutch disc 19 is shown in the position closing the access opening 14 as a result of the motor-driven closing of the electric motor 18 along the motor direction B. Figures 10 and 11 . Access opening 14 is now closed again.

[0075] Figure 13The clutch disc 19 is shown in a translational movement of manual opening by a person into the position releasing the access opening 14, starting from the closing position of the Figure 12 In this case, the user pulls the locking element 14 towards themselves by hand or pivots the locking element 14 towards themselves, thereby moving the connection kinematics 17 essentially along the longitudinal axis X. This also moves the coupling bolt 17a along the longitudinal axis X, which is possible purely translationally in a handrail direction A due to the straight handrail guide 18d of the motor mount 18b and the identical straight handrail guide 19b of the coupling disc 19.

[0076] Figure 14 The clutch disc 19 is shown in the position releasing the access opening 14 as a result of manual opening by the person along the handrail direction A. Figure 13. In accordance with the translational movement described above, the coupling bolt 17a reaches the other end of the congruent handrail guide 18d of the motor mount 18b and the straight handrail guide 19b of the clutch disc 19.

[0077] Figure 15 The clutch disc 19 is shown in a translational movement of a manual closing by a person into the closing position of the access opening 14, starting from the releasing position of the Figure 14 The process described above can also be performed in reverse by the person to manually close the access opening 14 again.

[0078] Once the coupling bolt 17a has reached one or the other end of the translational or rotational movement, the next movement can be performed both manually and by motor, so that any combination of movements as previously described is possible. Reference numeral list (part of the description)

[0079] AHandrail direction BMotor direction Longitudinal axis; Depth; Length; Transverse axis; Width; Vertical axis; Height; Horizontal plane 1 Household appliance; cooking appliance; oven 10 Outer casing; outer housing 10a Cover 10b Guide element 11 Inner casing; inner housing 12 Interior; cooking chamber 12a Side walls of the cooking chamber 12 13 Access opening 14 Locking element; flap 14a Locking element connection; blade 15 Mounting grid 16 Telescopic rails 17 Connection kinematics 17a Coupling bolt 17b Crank 17c Guide rod 17d Connecting element 18 (electric) motor 18a Motor shaft 18b Motor mount 18c Motor-side guide contour 18d Handrail guide of the motor mount 18b 18e Motor guide of the motor mount 18b 18f ​​Separating element or brake of the motor-side guide contour 18c 19 Clutch disc 19a Clutch-side guide contour 19b Handrail guide of the clutch disc 19 19d Engine guide of the clutch disc 19 19f Separating element or brake of the clutch-side guide contour 19a

Claims

1. Household appliance (1), preferably a cooking appliance (1), with an interior (12) which is designed to receive at least one object to be treated through an access opening (13) along the longitudinal axis (X), with a closing element (14) which is designed, preferably by pivoting by means of a pivoting element, preferably a hinge, to close and release the access opening (13) of the interior (12) from the front, and with a, preferably electric, motor (18) which is designed to move the closing element (14) back and forth between a position closing the access opening (13) and a position releasing the access opening (13), characterized by the fact thatThe motor (18) is stationaryly connected to a clutch disc (19) by means of a motor shaft (18a) in order to drive the clutch disc (19) rotationally, wherein the clutch disc (19) is force-transmittingly connected to the locking element (14) by means of a clutch bolt (17a), preferably a crank (17b), wherein the clutch disc (19) has a clutch-side guide contour (19a) which movably receives a first end of the clutch bolt (17a), wherein the clutch-side guide contour (19a) of the clutch disc (19) has: • at least one handrail guide (19b) in which the first end of the clutch bolt (17a) is received and moved translationally back and forth relative to the stationary clutch disc (19) if a user manually moves the locking element (14) between the position closing the access opening (13) and the position releasing the access opening (13). position moved back and forth, and • at least one motor running guide (19d),in which the first end of the coupling bolt (17a) is received and is rotated back and forth by the rotating coupling disc (19) if the motor (18) moves the locking element (14) back and forth between the position closing the access opening (13) and the position releasing the access opening (13), wherein the motor guide (19d) is formed by one end of the handrail guide (19b).

2. Household appliance (1) according to the preceding claim, wherein the first motor guide (19d) extends semicircularly around the axis of the motor shaft (18a), in particular further comprising a fixed motor mount (18b) with a motor-side guide contour (18c) which movably receives a second opposite end of the coupling bolt (17a).

3. Household appliance (1) according to one of the two preceding claims, wherein the motor-side guide contour (18c) of the motor mount (18b) comprises: • at least one handrail guide (18d) in which the second end of the coupling bolt (17a) is received and moved back and forth relative to the motor mount (18b) at least substantially translationally if a user manually moves the locking element (14) back and forth between the position closing the access opening (13) and the position releasing the access opening (13), and • at least one motor guide (18e) in which the second end of the coupling bolt (17a) is received and moved back and forth in an arc by the rotating coupling disc (19) if the motor (18) moves the locking element (14) back and forth between the position closing the access opening (13) and the position releasing the access opening (13).

4. Household appliance (1) according to one of the preceding claims, wherein the handrail guide (18d) and the motor guide (18e) of the stationary motor mount (18b) merge into each other at both ends of their paths and / or wherein the motor guide (18e) runs semicircularly around the axis of the motor shaft (18a).

5. Household appliance (1) according to one of the preceding claims, wherein the clutch-side guide contour (19a) of the clutch disc (19) and the motor-side guide contour (18c) of the motor mount (18b) are identical.

6. Household appliance (1) according to one of the preceding claims, comprising at least one spring element which is designed to substantially hold the locking element (14) in the position releasing the access opening (13) after a tilting point of movement has been undercut.

7. Household appliance (1) according to one of the preceding claims, comprising a control unit which is configured to allow the motor (18) to move the locking element (14) only until the tipping point is reached when moving into the position releasing the access opening (13) and then to return the motor (18) to its previous position.

8. Household appliance (1) according to one of the preceding claims, comprising at least one spring element which is designed to close the locking element (14) upon exceeding a closing point of a movement into the position closing the access opening (13).

9. Household appliance (1) according to one of the preceding claims, comprising a control unit which is configured to allow the motor (18) to move the locking element (14) only until the closing point is reached when moving into the position closing the access opening (13) and then to return the motor (18) to its previous position.

10. Household appliance (1) according to one of the preceding claims, wherein at least one of the handrail guides (18b, 19b) passes radially through the axis of the motor shaft (18a).

11. Household appliance (1) according to one of the preceding claims, wherein the handrail guide (18d) and the motor guide (18e) of the motor-side guide contour (18c) of the motor mount (18b) are separated radially to the motor shaft (18a) by means of a separating element (18f) of the motor-side guide contour (18c) of the motor mount (18b) and run continuously around the separating element (18f).

12. Household appliance (1) according to one of the preceding claims, wherein the first handrail guide (19b) and the first motor guide (19d) of the clutch-side guide contour (19a) of the clutch disc (19) are separated radially to the motor shaft (18a) by means of a separating element (19f) of the clutch-side guide contour (19a) of the clutch disc (19) and extend continuously around the separating element (19f).

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