Household appliance with motorized closing element

Abstract

The invention relates to a household 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 closure element (14) which is designed to close and open the access opening (13) of the interior (12) from the front, and with a motor (18) which is designed to move the closure element (14) back and forth between a position closing the access opening (13) and a position opening 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) in rotation, wherein the clutch disc (19) is connected to the closure element (14) in a force-transmitting manner by means of a coupling bolt (17a), 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 clutch disc (19) has.,

Description

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

[0002] Cooking appliances are known which have a fixed, i.e., stationary, cooking chamber formed with the cooking appliance, in which the food to be cooked can be placed in or on a cooking utensil and cooked with the cooking chamber of the cooking appliance closed. Such a cooking appliance can be, for example, an oven, a steamer, a combination oven with a steamer, and the like. Such cooking appliances with a fixed cooking chamber usually have a height of approximately 45 cm along the vertical axis, at least in Germany, although 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 have an outer housing which essentially encloses the cooking appliance on the outside and protects its individual components and elements, as well as making them easier to handle. Within the cooking appliance, an interior space is formed which represents the cooking chamber and is essentially enclosed by an inner housing, also referred to as a cooking chamber muffle or muffle. Between the inner housing and the outer housing, a housing space is formed as an intermediate space in which functional elements of the cooking appliance, such as a control system or control unit, an electrical power supply and other components which serve the intended use of the cooking appliance, can be arranged. In depth from the front, i.e. viewed from the user's perspective, the outer housing ora panel in the form of a 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 has a through-opening at the front as an access opening through which the interior of the cooking appliance is accessible to the user in order to insert cooking utensils into the interior of the cooking appliance as its cooking chamber and to arrange them there, as well as to remove cooking utensils from the interior of the cooking appliance after the food has been cooked. The access opening can be opened by the user by means of a closure element, for example in the form of a door that can be pivoted to the side, a flap that can be pivoted downwards, and the like, in order to access the interior of the cooking appliance, as described above, or to close the interior of the cooking appliance and carry out the cooking operation or process. Such a closure element can be closed or have a viewing window to allow the user a view into the closed interior of the cooking appliance.

[0005] Such cooking appliances with a fixed cooking chamber are usually designed as built-in appliances or as built-in kitchen appliances in order to be arranged with their outer casing in a space-saving manner and at a height that is easily accessible for the user along the vertical axis in kitchen furniture, such as in built-in kitchen cupboards, and to be flush with the surfaces of the other cooking appliances, drawers, doors and the like of the kitchen furniture towards the front of the user with their locking element, if necessary also with their panel (see above), which can improve the visual impression for the user. However, such cooking appliances can also be designed as individual, separate appliances that can be set up and operated, in particular, on a work surface in a kitchen unit. This can simplify flexibility of use as well as procurement and disposal.

[0006] In such cooking appliances, the closure element, such as a door that can be pivoted to the side or a flap that can be pivoted up from below, is operated manually by a person as the user, i.e. a handle, bracket or the like is grasped with the fingers of one hand and then moved or pivoted back and forth between the fully open state, in order to be able to access the cooking chamber as easily as possible, and the fully closed state in order to carry out the cooking process. This can also be achieved by means of a translational movement back and forth along the longitudinal axis, in which the closure element can be pulled out and pushed in. Mixed rotational-translational pivoting movements are also possible using suitable kinematics. In any case, intermediate positions are also possible, in order to open the cooking chamber only a crack, for example for ventilation or cooling after a cooking process.

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

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

[0009] The problem with cooking appliances of this type with a motor-driven closure element is that the access opening can only be opened and closed using the movable closure element using the drive or motor. Otherwise, the force applied by the user to open or close it is partially transferred to the stationary drive motor, which can lead to failure of the motor gear. Thus, because the movable closure element is directly connected to the motor, force is always transferred to the motor gear whenever the closure element is moved manually (in the event of misuse or when the device is de-energized). Impact loads can lead to failure of the drive gear. In addition, the user is always working manually against the motor, which can cause an unpleasant feeling and lead to concerns about whether this could damage or destroy 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 motor-driven closure element such that the closure element can still be moved or operated manually by the user without damaging the motor. At least one additional manual opening and closing in this sequence should be possible. In particular, the introduction of forces into the drive motor during manual movement of the movable closure element should be completely avoided. In particular, manual movement of the movable closure element should be possible when the household appliance is de-energized. In particular, manual and motor-driven household appliances of the movable closure element should be able to take place one after the other. In any case, this should be possible in a way that is as simple, space-saving, cost-effective and / or low-maintenance as possible.At least an alternative to the well-known household appliances of this kind 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 emerge from the following dependent claims.

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

[0013] The household appliance can be, in particular, a cooking appliance, but also another household appliance such as a washing machine, a dryer, or the like. In this case, the object to be treated can be laundry to be washed or dried. As a cooking appliance, this can be an oven, an oven with an integrated microwave, a microwave itself, a dialogue oven, a steam oven, a steam cooker, and the like. In this case, the object to be treated can be a food item to be 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 in rotation, wherein the clutch disc is connected to the closure element in a force-transmitting manner by means of a clutch bolt, preferably a crank, 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 closure 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 pin is received and is rotated back and forth by the rotating clutch disc if the motor moves the closure element back and forth between the position closing the access opening and the position releasing the access opening, wherein 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 previously explicitly mentioned movement with the closure element closed for opening and then back to the starting position for closing, which can be performed either manually or alternatively by motor. However, "back and forth" can also be understood as the opposite movement from the open closure element for opening and then closing. Preferably, both movement sequences are possible, as will be described in more detail below.

[0016] In any case, the combination of the first handrail guide and the first motor guide of a rotationally drivable clutch disc can enable the clutch bolt to execute the previously known motor movement of the locking element when the clutch disc rotates by the motor, preferably the electric motor. The first handrail guide provided in parallel can additionally enable the clutch bolt to move alternatively relative to the clutch disc along the first handrail guide when the clutch disc is stationary, i.e. when the preferably electric motor is stationary, and thus to allow movement of the locking element by manual actuation by the user, without the manual actuation by the user or without forces from the user being transmitted to or being able to act on the motor.

[0017] In other words, according to the invention, a bolt can be used to move along a specific contour. This contour includes at least one handrail and one motorized track. Because the force vector is translational for the handrail and rotational for the motorized track, a distinction can be made between the motorized track and the handrail.

[0018] Thus, according to the invention, the closure element can be opened and closed by means of the motor. In addition, however, the user can now also open and then close the closed closure 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 between the clutch disc and the locking element can be a simple way to convert the rotary movement of the motor-driven clutch disc into a translatory movement, which can lead to the locking element being pivoted open and closed.

[0020] The household appliance further comprises 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 comprises: • at least one handrail guide in which the second end of the coupling bolt is received and moved at least substantially translationally back and forth relative to the motor mount if a user manually moves the closure 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 is moved back and forth in an arc by the rotating clutch disc if the motor moves the closure element back and forth between the position closing the access opening and the position releasing the access opening, wherein the handrail guide and the motor guide of the fixed motor mount merge into one another at both ends of their paths.

[0021] This allows the creation of an additional guide contour that is fixed relative to the clutch disc, which can expand the possibilities of the previously described movement sequence. In particular, this makes it possible to eliminate the need to complete the previously described back-and-forth movements to enable an alternative movement. Instead, each movement can be performed and completed in one direction, and then directly transition into one of the other movements. This can increase operating flexibility.

[0022] In other words, in this case, the user can, for example, open a locked closure element manually and then have it closed again by motor. This, as previously described, would require the closure element to be manually closed again in order to assume a starting position for a 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 motor mount extends linearly, in particular radially, through the axis of the motor shaft. The motor guide of the clutch disc and / or the motor mount extends semicircularly around the axis of the motor shaft.

[0024] The invention is based on the finding that a rotational movement over a path of 180 degrees can be generated in this way, since the two motor guides are each semicircular and thus designed as a semicircle. This reduces the forces required to generate the respective movement and increases the time in which the closure element is moved, compared to a shorter rotational path of, for example, 90 degrees or 120 degrees.

[0025] Furthermore, this allows the principle of a toggle lever to be used. This ensures that the force is not introduced linearly (as is the case with gears, for example), but is greatest in the two end positions, i.e. in the position closing the access opening and in the position releasing the access opening. As already mentioned, the use of a toggle lever is based on the idea that the most force is required to move the door locking element in the two end positions. Due to the intended length of the semi-circular motor guides, each 180 degrees, these operating points and thus the points of movement where the toggle lever generates the most force and the most force is required to move the locking element, are located exactly one above the other, so that the maximum of the available force can be utilized there.

[0026] Furthermore, the design of the semi-circular motor guides, each 180 degrees, makes it easier to hit and ensures a safer transition of the bolt between the motor and handrail, thus preventing possible blockage.

[0027] A further aspect of the invention can be seen in the fact that the motor drive has a freewheel in the form of a curved slot. This slot can allow the locking element to fall into the end positions, which can lead to an impression of a harmonious and high-quality movement of the locking element for the user.

[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 congruent. This can represent a concrete implementation option. This can, in particular, 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 substantially hold the closure element once a tilting point of a movement into the position releasing the access opening is undershot, and further comprises a control unit which is designed to allow the motor to move the closure element during the movement into the position releasing the access opening only until the tilting point is reached and then to move the motor back into the 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 has to open the closure element until the closure element begins to fall on its own due to its own weight. This can occur at an angle of approximately 15 to 20 degrees from the vertical, i.e., starting from the position where the access opening is closed. The motor can then reverse its movement and return to the previous position, allowing a new movement sequence to begin.

[0031] As a result, the motor can be supplied with significantly less current over its lifetime than in the previously described aspects of the present invention, which can promote its longevity.

[0032] Furthermore, the fact that the locking element is now "just nudged open" by the motor, rather than being driven open, prevents cases of misuse caused by a person interfering with the motorized movement of the locking element. For example, if a person were to block the locking element during an opening process after an opening angle of 15 degrees, no force would be transmitted to the motor, as the locking element would then already be in freewheel mode with the motor. This means that from then on, the person cannot exert any direct force on the motor or the transmission, thus protecting the motor and transmission.

[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 closure element once a closing point of a movement into the position closing the access opening is exceeded, and further comprises a control unit which is designed to allow the motor to move the closure element during the movement into the position closing the access opening only until the closing point is reached and then to move the motor back into the previous position.

[0034] Compared to the previous aspect of the invention, the motor can thus only move the locking element sufficiently far during 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 locking element being pulled by the springs in the hinge, so that a harmonious movement can also be achieved during closing.

[0035] According to a further aspect of the invention, the handrail guide and the motor guide of the motor-side guide contour of the motor mount are separated from each other radially to the motor shaft by means of a separating element of the motor-side guide contour of the motor mount and extend continuously around the separating element. The first handrail guide and the first motor guide of the clutch-side guide contour of the clutch disc are separated from each other approximately radially to the motor shaft 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 absolutely necessary to fulfill the function.

[0036] In this way, the translational and semicircular or arcuate movements can be guided separately, as the separating element prevents movement of the coupling pin between the respective handrail guide and motor guide, thus securely guiding the coupling pin either in the handrail guide or in the motor guide. The movement of the coupling pin around the separating element allows the coupling pin to be switched between the handrail guide and the motor guide, but only at the end or beginning of the movement and not during the movement. The separating element prevents this.

[0037] One aspect is that the course of a handrail guide, described as being straight and perpendicular to the motor shaft, is to be understood in particular to mean 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 Fig. 1 a perspective view of a household appliance according to the invention in the form of a cooking appliance with an open access opening, viewed diagonally from the front above; Fig. 2 a side view with partial longitudinal section of or through a connecting kinematics with electric motor and clutch disc; Fig. 3 a top view with partial longitudinal section through the connecting kinematics with clutch disc and engine mount; Fig. 4 a side view of a clutch disc with clutch-side guide contour; Fig. 5 a side view of a corresponding motor mount with motor-side guide contour; Fig. 6 the coupling pin of the connecting kinematics with clutch disc and engine mount in the position closing the access opening; Fig. 7 the clutch disc in a rotary movement of a motorized opening into the position releasing the access opening starting from the closing position of the Fig. 6; Fig. 8 the representation of the Fig. 7 with the clutch disc moving to the starting position; Fig. 9 the clutch disc in the position releasing the access opening as a result of the motorized opening of the electric motor along the motor running direction of the Fig. 7 and Fig. 8; Fig. 10 the clutch disc in a rotary movement of a motorized closing into the position closing the access opening starting from the releasing position of the Fig. 9; Fig. 11 the representation of the Fig. 10 with the clutch disc moving to the starting position; Fig. 12 the clutch disc in the position closing the access opening as a result of the motor closing of the electric motor along the motor running direction of the Fig. 10 and Fig. 11; Fig. 13 the clutch disc in a translatory movement of a manual opening by a person into the position releasing the access opening starting from the closing position of the Fig. 12; Fig. 14 the clutch disc in the position releasing the access opening as a result of the manual opening by the person along the handrail direction of the Fig. 13; and Fig. 15 the clutch disc in a translatory movement of a manual closing by a person into the position closing the access opening starting from the releasing position of the Fig. 14.

[0039] The figures above are viewed in Cartesian coordinates. There is a longitudinal axis X, which can also be referred to as depth X or length X. Perpendicular to the longitudinal axis X extends a transverse axis Y, which can also be referred to as width Y. Perpendicular to both the longitudinal axis X and the transverse axis Y extends a vertical axis Z, which can also be referred to as 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 referred to as the horizontal plane X, Y.

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

[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 an outer housing 10 and 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 the upper area with a panel 10a. Arranged within the outer housing 10 is an inner housing 11, which can also be referred to as an inner housing 11. The inner housing 11 closes off with the outer housing 10 along the longitudinal axis X to the rear, along the vertical axis Z downwards and upwards, and along the transverse axis Y on both sides, so that an intermediate space is formed between the outer housing 10 and the inner housing 11, which intermediate space can also be referred to as the housing space. This intermediate space represents the interior of the oven 1.

[0042] The inner housing 11 also 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 intermediate space 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, which is located below the panel 10a. The access opening 13 can be closed and opened by means of a closure element 14 in the form of a flap 14. For this purpose, the flap 14 is connected to the outer casing 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, so that the flap 14 can be pivoted upwards away from the user to close the access opening 13, and can be pivoted downwards towards the user to release the access opening 13 and access the cooking chamber 12, see Fig. 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 removably attached to each support grid 15 at the same height along the vertical axis Z, which together form a pair of telescopic rails 16. The telescopic rails 16 are each designed in three parts along the longitudinal axis X (not shown), so that a front rail element is connected to a rear rail element of the telescopic rail 16 by means of a middle rail element, wherein the rear rail element is held fixedly and removably on the respective support grid 15.

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

[0046] Fig. 2 shows a side view with partial longitudinal section of or through a connecting kinematics 17 with electric motor 18 and clutch disc 19.

[0047] The connecting kinematics 17 with electric motor 18 and coupling disc 19 is arranged laterally in the space between the oven 1 and can be used by the user to motor-operate the flap 14 as a closure element 14, so that the user does not have to do this himself. The motor movement, in particular for opening the closed flap 14 and then closing the open flap 14 again, cf. Fig. 1, can be carried out by the user in particular by actuating a corresponding control element (not shown), which can be arranged on the outside of the flap 14 (not shown) and / or on the panel 10a (not shown).

[0048] To guide the connecting kinematics 17, the outer housing 10 has a guide element 10b on the inside, which points upwards along the vertical direction Z and has a through opening (not shown) along the longitudinal axis X. Facing the user along the longitudinal axis X, a closure element connection 14a, also called a blade 14a, is pivotably arranged on the front edge of the outer housing 10. The closure element 14 or the flap 14 (not shown, see Fig. 1) is fixedly mounted on the closure element connection 14a and can therefore be pivoted.

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

[0050] The side of the clutch disc 19 facing away from the disc-like engine mount 18b has a clutch-side guide contour 19a, which is Fig. 3 to 11 will be described in more detail. A coupling pin 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 pin 17a and the clutch disc 19, which can transmit the power from the electric motor 18 to the coupling pin 17a.

[0051] The coupling pin 17a is rotatably mounted in a corresponding through-opening (not designated) of one end of a crank 17b, which is rotatably connected at the opposite end to a guide rod 17c that is translationally movable along the longitudinal axis X and guided by the through-opening of the aforementioned guide element 10b of the outer housing 10. The opposite end of the guide rod 17c is connected to the closure 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 rotational movement is thereby transmitted to the closure element connection 14a, as previously known, the flap 14 can, as already mentioned, be moved back and forth by motor between a position closing the access opening 13 and a position releasing the access opening 13. According to the invention, the rotational movement of the electric motor 18 can be converted into a translational movement by means of the coupling disc 19, the coupling pin 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 a component of the clutch-side guide contour 19a, see e.g. Fig. 3 and Fig. 4. The first end of the coupling pin 17a is always movably received or guided by the clutch-side guide contour 19a, so that the rotational movement of the clutch disc 19 can be transmitted to the coupling pin 17a if the coupling pin 17a is located in the engine guide 19d.

[0054] At the same time, however, the invention also allows the coupling pin 17a to be moved translationally along the handrail guide 19b of the stationary, i.e., non-motor-driven, coupling disc 19 if the user manually pivots the flap 14 open and closed. In this case, the force of the user's manual movement is not transferred to the stationary electric motor 18, so that the motor 18 cannot be damaged by the user's manual movements.

[0055] Fig. 3 shows a plan view with partial longitudinal section through the connecting 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 marked) of the motor guide 18b accommodate the clutch disc 19 and the end of the crank 17b with the clutch bolt 17a between them ( Fig. 3 shows only the disk of the motor guide 18b with the motor-side guide contour 18c). The coupling pin 17a is extended so that a second end of the coupling pin 17a, opposite the first end, engages in the motor-side guide contour 18c of the second disk of the motor guide 18b, see Fig. 12, and can be conducted there.

[0057] Fig. 4 shows a side view of a clutch disc 19 with clutch-side guide contour 19a. Fig. 5 shows 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 guide 19d, which extends semicircularly around the axis of the motor shaft 18a. The first handrail guide 19b and the first motor 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 has the handrail guide 18b, which extends radially through the axis of the motor shaft 18a, and the motor guide 18e, which extends semicircularly around the axis of the motor shaft 18a. The handrail guide 18b and the motor guide 18e of the motor-side guide contour 18c of the motor mount 18b merge into one another.

[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 congruent.

[0061] The handrail guide 18d and the motor guide 18e of the motor-side guide contour 18c of the motor mount 18b are separated from each other 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 extend continuously around the separating element 18f. Likewise, 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 from each other 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.

[0062] Furthermore, the household appliance has a spring element designed to essentially hold the closure element 14 once a movement into the position releasing the access opening 13 has fallen below a tipping point. Furthermore, the household appliance has a control unit (not shown) designed to allow the motor 18 to move the closure element 14 during the movement into the position releasing the access opening 13 only until the tipping point is reached and then to return the motor 18 to the previous position.

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

[0064] The motorized and manual opening and closing of the closure element 14 of the household appliance 1 can now be carried out as follows: Fig. 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 clutch-side guide contour 19a are congruent. The coupling pin 17a is positioned to the right along the longitudinal axis X, or to the rear from the perspective of the connection kinematics 17. The closure element 14 is thus in the position closing the access opening 13.

[0066] Fig. 7 shows the clutch disc 19 in a rotary movement B of a motorized opening into the position releasing the access opening 14 starting from the closing position of the Fig. 6.

[0067] Thus, the motor 18 is now controlled by the control unit according to the illustration of the Fig. 7 is operated counterclockwise to the left, so that the clutch disc 19 is rotated accordingly. The clutch disc 19 or its clutch-side guide contour 19a carries the clutch pin 17a along the motor-side guide contour 18c, so that the clutch pin 17a is moved in a semi-circular manner in the motor running direction B in the overlapping or superimposed motor guides 18e of the motor mount 18b and the motor guide 19d of the clutch disc 19.

[0068] Fig. 8 shows the representation of the Fig. 7 with clutch disc 19 moving to the starting position.

[0069] If the movement of the coupling bolt 18b falls below the Fig. 7, namely the previously mentioned tipping point, which is located at approximately 15 degrees to 20 degrees of the semi-circular movement, gravity is sufficient to open the closure element further and move it completely into the position exposing the access opening 14. Thanks to the spring element, this occurs in such a way that a uniform movement is created. Accordingly, however, the remaining movement can be performed without the motor 18, so that the motor 18 is moved back to its previous position as the starting position in the motor running direction B as soon as the tipping point is reached.

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

[0071] Fig. 10 shows the clutch disc 19 in a rotary movement of a motorized closing into the position closing the access opening starting from the releasing position of the Fig. 9.

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

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

[0074] Fig. 12 shows the clutch disc 19 in the position closing the access opening 14 as a result of the motor closing of the electric motor 18 along the motor running direction B of the Fig. 10 and Fig. 11. The access opening 14 is then closed again.

[0075] Fig. 13 shows the clutch disc 19 in a translatory movement of a manual opening by a person into the position releasing the access opening 14 starting from the closing position of the Fig. 12. In this case, the user pulls the locking element 14 towards themselves by hand or pivots the locking element 14 towards themselves, whereby the connecting kinematics 17 is moved essentially along the longitudinal axis X. This also moves the coupling pin 17a along the longitudinal axis X, which is possible purely translationally in a handrail direction A due to the linear handrail guide 18d of the motor mount 18b and the congruent linear handrail guide 19b of the coupling disc 19.

[0076] Fig. 14 shows the clutch disc 19 in the position releasing the access opening 14 as a result of the manual opening by the person along the handrail direction A of the Fig. 13. According to the previously described translational movement, the coupling pin 17a reaches the other end of the congruent handrail guide 18d of the motor mount 18b and the straight handrail guide 19b of the coupling disc 19.

[0077] Fig. 15 shows the clutch disc 19 in a translatory movement of a manual closing by a person into the position closing the access opening 14 starting from the releasing position of the Fig. 14. The person can also perform the above-described procedure in reverse to manually close the access opening 14 again.

[0078] Once the coupling pin 17a has reached one or the other end of the translatory movement or the rotary movement, the next movement can be carried out both manually and motor-driven, so that any combination of movements as previously described is possible. List of reference symbols (part of the description) A Handrail direction B Motor running direction X Longitudinal axis; Depth; Length Y transverse axis; width Z vertical axis; height X, Y Horizontal; horizontal plane 1 household appliance; cooking appliance; oven 10 outer casing; outer casing 10a aperture 10b Guide element 11 inner casing; inner casing 12 Interior; cooking chamber 12a Side walls of the cooking chamber 12 13 Access opening 14 Closure element; flap 14a Locking element connection; sword 15 support grids 16 telescopic rails 17 Connection kinematics 17a Coupling bolt 17b Crank 17c Guide rod 17d connecting element 18 (electric) motor 18a Motor shaft 18b Engine mount 18c Motor-side guide contour 18d Handrail guide of the motor mount 18b 18e Engine guide of the engine mount 18b 18f Separating element or brake of the motor-side guide contour 18c 19 Clutch disc 19a coupling-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 cooking appliance (1), with an interior space (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 closure element (14) which is designed to close and release the access opening (13) of the interior (12) from the front, preferably by pivoting by means of a pivoting element, preferably a hinge, and with a preferably electric motor (18) which is designed to move the closure element (14) back and forth between a position closing the access opening (13) and a position releasing the access opening (13), characterized by , that 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) in rotation, wherein the clutch disc (19) is connected to the closure element (14) by means of a clutch bolt (17a), preferably a crank (17b), in a force-transmitting manner, 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 coupling bolt (17a) is received and is moved translationally back and forth relative to the stationary coupling disc (19) if a user manually moves the closure 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 (19d) in which the first end of the coupling bolt (17a) is received and is moved back and forth in rotation by the rotating coupling disc (19) if the motor (18) moves the closure 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), wherein the first motor guide (19d) extends semicircularly around the axis of the motor shaft (18a), 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), wherein the motor-side guide contour (18c) of the motor mount (18b) has: • at least one handrail guide (18d) in which the second end of the coupling bolt (17a) is received and is moved back and forth at least substantially translationally relative to the motor mount (18b) if a user manually moves the closure 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 is moved back and forth in an arc by the rotating coupling disc (19) if the motor (18) moves the closure element (14) back and forth between the position closing the access opening (13) and the position releasing the access opening (13), wherein the handrail guide (18d) and the motor guide (18e) of the fixed motor mount (18b) merge into each other at both ends of their paths, wherein the motor guide (18e) runs semicircularly around the axis of the motor shaft (18a), [2] Household appliance (1) according to claim 1, 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 congruent. [3] Household appliance (1) according to claim 1 or 2, further comprising at least one spring element which is designed to substantially hold the closure element (14) from a point of movement below a tilting point into the position releasing the access opening (13), and further comprising a control unit which is designed to allow the motor (18) to move the closure element (14) during the movement into the position releasing the access opening (13) only until the tilting point is reached and then to return the motor (18) to the previous position. [4] Household appliance (1) according to one of claims 1 to 3, further comprising at least one spring element which is designed to close the closure element (14) upon exceeding a closing point of a movement into the position closing the access opening (13), and further comprising a control unit which is designed to allow the motor (18) to move the closure element (14) during the movement into the position closing the access opening (13) only until the closing point is reached and then to return the motor (18) to the previous position. [5] Household appliance (1) according to one of the preceding claims, wherein at least one of the handrail guides (18b, 19b) extends radially through the axis of the motor shaft (18a). [6] Household appliance (1) according to one of claims 1 to 4, wherein the handrail guide (18d) and the motor guide (18e) of the motor-side guide contour (18c) of the motor mount (18b) are separated from each other 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), and 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 from one another 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 run continuously around the separating element (19f).

Images