Household food preparation appliance

Abstract

Abstract: The invention relates to a household appliance for preparing food, comprising a base (100) and a bowl assembly (200) intended to be positioned in the base (100), in which the base (100) comprises a locking device (120) for the bowl assembly (200), with a locking lug (122) mounted in translation relative to the receiving surface (110) along a translation axis parallel to the receiving surface (110), in which the base (210) of the bowl assembly (200) comprises a locking arrangement (220), the base (100) comprising a drive device (130) coupled to the locking device (120) and provided for driving the locking lug (122) in translation between a locked position and an unlocked position. Reference figure: figure 5

Description

Title of the invention: Household appliance for preparing food FIELD OF THE INVENTION

[0001] The present invention relates to the field of household appliances for preparing food, in particular food processors, and more particularly relates to the locking of a bowl assembly on a base of such a household appliance. STATE OF THE ART

[0002] There are various types of food preparation appliances, including appliances comprising a base and a bowl assembly removably mounted relative to the base.

[0003] Such household appliances, also called food processors, comprise means for processing food present in the bowl assembly, for example by heating and / or by mechanical action on the food.

[0004] The food processor may thus comprise a heating member for heating the bowl assembly. Such a heating member may be positioned in the base intended to receive the bowl assembly, and / or directly in the bowl assembly in which case it is electrically powered by the base for example.

[0005] Alternatively or additionally, the food processor may also be motorized, in particular with a motorized base, and include a rotating working tool positioned inside the bowl assembly to act on the food present in the bowl. The rotating working tool may, for example, be used to perform chopping, kneading, mixing, and emulsifying tasks.

[0006] Depending on the models of food processors, several types of rotating working tools can be provided to carry out specific work such as emulsions, ground preparations, mixtures, etc.

[0007] For obvious safety reasons, it is useful to be able to lock the bowl assembly onto the base, in particular to prevent the bowl assembly from being detached from the base during a specific culinary preparation. This is particularly true when the food processor is motorized where it is necessary for the bowl to be securely attached to the processor during operation of the latter, given in particular the speed and torque that can be developed by the rotating working tool.

[0008] Furthermore, it is practical to be able to remove the bowl from the robot, for example to empty or clean it.

[0009] Thus, most food processors have a locking system allowing you to alternatively lock or unlock the bowl assembly at the base of the robot. Statement of the invention

[0010] An objective of the present invention is to provide a household appliance for preparing food having a system for locking the bowl assembly to the base of the household appliance which is simple, particularly in terms of manufacturing the appliance, and which does not hinder the handling and use of the household appliance by a user.

[0011] It is also an objective of the present invention to provide a food preparation appliance having a system for locking the bowl assembly to the base of the appliance which has a sleek and compact design, and can be cleaned easily.

[0012] A further objective of the present invention is to provide a household appliance for preparing food having a system for locking the bowl assembly to the base of the household appliance, the operation of which is independent of the rest of the operation of the household appliance, in particular which can be completely decorrelated from other locking systems of the household appliance, such as in particular the locking of the lid on the bowl assembly.

[0013] To this end, a household appliance for preparing food is provided, comprising a base having a receiving surface; a bowl assembly comprising a base and a bowl for receiving food, the base having a bottom surface and the bowl extending from the base on the side opposite the bottom surface, the bowl assembly being adapted to be positioned in the base with the bottom surface of the base positioned opposite the receiving surface; wherein the base comprises a device for locking the bowl assembly, the locking device comprising a locking lug mounted in translation relative to the receiving surface along a translation axis parallel to the receiving surface, the locking lug being provided to extend through a lug orifice provided through the receiving surface, the locking lug having an active locking portion extending in a direction substantially parallel to the receiving surface, wherein the base of the bowl assembly comprises a locking arrangement with a locking wall extending from the bottom surface, a locking hole being provided through the locking wall, the locking hole being for receiving the active locking portion of the locking lug, the base comprising a drive device coupled to the locking device and adapted to translate the locking lug between a locked position where the active locking portion of the locking lug is inserted into the locking hole of the locking arrangement to lock the bowl assembly to the base, and an unlocked position in which the bowl assembly can be moved relative to the base.

[0014] Preferred but non-limiting aspects of this household appliance, taken alone or in combination, are as follows: - the base comprises a receiving axis orthogonal to the receiving surface, the receiving axis being positioned substantially in the center of the receiving surface and being coincident in the locked position with a central longitudinal axis of the bowl assembly, the translation axis of the locking lug not intersecting the receiving axis of the base. - in the locked position, the active locking portion of the locking lug extends tangentially to a circle parallel to the receiving surface and having a center passing through the receiving axis. - the locking arrangement comprises a locking cavity extending inwardly from the bottom surface of the bowl assembly, the locking cavity being partly formed by the locking wall in which the locking hole is formed. - the base includes a projecting protective casing extending outwardly from the receiving surface, the protective casing being intended to be received in the locking cavity in the locked position. - the protective casing is provided to receive the locking lug so that in the unlocked position the locking lug is fully housed inside the protective casing, and in the locked position the active locking portion of the locking lug extends at least partially outwards from the protective casing into the locking hole. - the locking wall in which the locking hole is provided extends inwardly from the bottom surface of the bowl assembly in an inclined manner not perpendicular to the bottom surface of the bowl assembly. - the locking arrangement comprises a protruding element extending outwardly from the bottom surface of the bowl assembly, the protruding element being partly formed by the locking wall in which the locking hole is formed, and wherein the receiving surface comprises a locking cavity extending inwardly of the base and shaped to receive the protruding element, the lug hole being provided in a wall of the cavity extending from the receiving surface. the locking device comprises a plurality of locking lugs, each locking lug being adapted to cooperate with a respective locking hole provided through the locking wall of the base of the bowl assembly. at least two locking lugs among the plurality of locking lugs are arranged parallel to each other, the at least two locking lugs being mounted in translation along translation axes parallel to each other and extending in a translation plane parallel to the receiving surface. the at least two locking lugs are configured to move in the same translational direction to move from the locked position to the unlocked position, and vice versa to move from the unlocked position to the locked position. the base comprises a receiving cavity with a bottom forming the receiving surface, the bowl assembly being intended to be positioned in the receiving cavity of the base, the receiving cavity and the base of the bowl assembly comprising keying elements cooperating to allow a single positioning of the bowl assembly in the receiving cavity of the base. the keying elements comprise flats formed respectively on the side walls of the receiving cavity and the base of the bowl assembly. the household appliance further comprises a device for detecting the presence of the bowl assembly on the base, the detection device comprising electronic sensors and / or mechanical sensors for detecting a presence of the bowl assembly on the receiving surface of the base. the household appliance further comprises a control device configured to control the drive device only when the bowl assembly is positioned on the receiving surface of the base. the household appliance further comprises a means for switching on the appliance and a means for activating a culinary preparation, the control device being configured to move the locking lug from the unlocked position to the locked position when activating a culinary preparation. the control device is configured to move the locking lug from the locked position to the unlocked position upon stopping a pre culinary preparation. - the drive device comprises a drive motor separate from a motor provided in the base for food preparation. DESCRIPTION OF FIGURES

[0015] Other characteristics and advantages of the invention will emerge from the following description, which is purely illustrative and non-limiting and must be read in conjunction with the appended drawings, in which: - [Fig.l] is a perspective view of a household appliance having a bowl assembly for receipt in a base; - [Fig.2] is a perspective view from below of the bowl assembly; - [Fig.3] is a perspective view from above of the receiving cavity of the base ; - [Fig.4] is a sectional view illustrating the bowl assembly positioned in the receiving cavity of the base, in the unlocked position; - [Fig.5] is a top view of the receiving surface illustrating the locking device, in the unlocked position; - [Fig.6] is a bottom view of the receiving surface illustrating the locking device, in the locked position; - [Fig.7] is a sectional view illustrating the bowl assembly positioned in the receiving cavity of the base, in the locked position; - [Fig.8] is a top view of the receiving surface illustrating the locking device, in the unlocked position; - [Fig.9] is a bottom view of the receiving surface illustrating the locking device, in the locked position. DETAILED DESCRIPTION OF THE INVENTION

[0016] In [Fig.l] there is illustrated a household appliance which is intended in particular for the preparation of food and comprises a base 100 on which a bowl assembly 200 can be positioned.

[0017] The base 100 comprises a receiving surface 110 on which the bowl assembly 200 is intended to be placed. The base 100 comprises a receiving axis R orthogonal to the receiving surface 110 as illustrated in [Fig.4], such a receiving axis R being positioned substantially at the center of the receiving surface 110 and being merged with a central longitudinal axis of the bowl assembly 200 when the latter is in position in the base 100.

[0018] According to the example illustrated in [Fig.l], the receiving surface 110 constitutes the bottom of a receiving cavity 101 formed in the base 100 and intended to receive the bowl assembly 200.

[0019] As illustrated in [Fig.2], the bowl assembly 200 comprises a base 210 and a bowl 250 intended to receive food. The base 210 has a bottom surface 211 intended to be placed opposite the receiving surface 110 of the base 100 when the bowl assembly 200 is positioned in the base 100.

[0020] The bowl 250 extends from the base 210 on the side opposite the bottom surface 211. It comprises an upper opening allowing the bowl 250 to be filled with food, for example. A cover (not shown) may close this opening in order to enclose the contents of the bowl, in particular when it is desired to operate the household appliance.

[0021] A specific locking system is also provided which makes it possible to secure the positioning of the bowl assembly 200 on the receiving surface 110 of the base 100.

[0022] The base 100 thus comprises a locking device 120 provided to allow locking of the bowl assembly 200 on the base 100. More specifically, the locking device 120 is provided to cooperate with a particular locking arrangement 220 of the bowl assembly 200.

[0023] According to the proposed arrangement, the locking device 120 comprises at least one locking lug 122 mounted in translation relative to the receiving surface 110 along a translation axis T parallel to the receiving surface 110. In the example illustrated in the figures, two locking lugs 122 are provided in the locking device 120, which makes it possible to have not only better locking of the bowl assembly 200 on the base 100, but also better balancing.

[0024] Each locking lug 122 is provided to extend through a lug hole 111 provided through the receiving surface 110.

[0025] Each locking lug 122 has an active locking portion 123 extending in a direction substantially parallel to the receiving surface 110. As will be seen later, such an active locking portion makes it possible in particular to block the bowl assembly 200 on the base 100 by preventing a translation along the receiving axis R, that is to say in particular a withdrawal of the bowl assembly 200 relative to the base 100.

[0026] Such locking lugs 122 are, for example, hook-shaped.

[0027] The locking lugs 122 may be actuable independently of one another. However, it is preferable for the locking lugs 122 to be actuable synchronously. Thus, according to an exemplary embodiment, the locking lugs 122 are mounted on a pallet 121, this pallet 121 being arranged under the receiving surface 110 of the base 100.

[0028] As illustrated in Figures 2, 4 and 7, the base 210 of the bowl assembly 200 comprises a locking arrangement 220 with a worm wall locking wall 221 extending from the bottom surface. This locking wall 221 comprises a locking orifice 222 which is preferably through, and which is intended to receive the active locking portion 123 of the locking lug 122.

[0029] It is the translational movement of the locking lugs 122 relative to the bowl assembly 200 which allows the locking or unlocking of the bowl assembly 200 relative to the base 100.

[0030] Preferably, the base 100 comprises a drive device 130 which is coupled to the locking device 120 and provided to translate the locking lug 122 between a locked position and an unlocked position. If a pallet 121 is used, then the locking device 120 may be provided to directly translate the pallet 121.

[0031] Such a drive device 130 preferably comprises a drive motor separate from the motor which would be provided in the base 100 to drive a cutting tool, for example for preparing food. It may be in the form of a motor, a geared motor or an electromagnet, for example.

[0032] Each locking lug 122 can therefore be translated between a locked position where the bowl assembly 200 is secured on the base 100 and cannot be removed from this base 100 in particular, and an unlocked position in which the bowl assembly 200 can be moved relative to the base 100.

[0033] According to the proposed arrangement, in the locked portion the active locking portion 123 of the locking lug 122 is inserted into the locking orifice 222 of the locking arrangement 220 and thereby locks the bowl assembly 200 on the base 100. In particular, any translational movement along the receiving axis R is prevented and the bowl assembly 200 cannot therefore be removed.

[0034] Preferably, the translation axis of the locking lug 122 is not intersecting with the receiving axis R of the base 100.

[0035] More preferably, the active locking portion 122 of the locking lug 122 extends tangentially to a circle parallel to the receiving surface 110 and having a center passing through the receiving axis R.

[0036] More preferably, the locking lugs 122 are arranged to be moved in translation along translation axes T parallel to each other, in the same plane, in particular a translation plane parallel to the receiving surface 110. Preferably, the locking lugs 122 are arranged parallel to each other.

[0037] Advantageously, the locking direction of the locking lugs 122 is the same for all the locking lugs 122.

[0038] The particular arrangement proposed for the translation of the locking lugs 122 is particularly advantageous since it allows in particular to have a system of very simple design lock, while allowing very secure locking of the 200 bowl assembly onto the 100 base.

[0039] The simplicity of this locking system implies a reduction in manufacturing costs, reduces the risks of breakdown, and also simplifies any repairs that may prove necessary.

[0040] Preferably, the locking arrangement 220 comprises a locking cavity 224 extending inwardly from the bottom surface 211 of the bowl assembly 200, one of the walls of the locking cavity 224 being formed by the locking wall 221 shown above.

[0041] According to a preferred embodiment and as illustrated in [Fig. 3], the base 100 comprises a protective casing 112 projecting outwardly from the receiving surface 110 of the base 100. Such a protective casing 112 is intended to be received in the locking cavity 224 when the bowl assembly 200 is positioned on the receiving surface 110 of the base 100.

[0042] Preferably, the protective casing 112 has a shape complementary to the locking cavity 224. Such an arrangement with complementary shapes makes it possible to prevent any movement in a plane parallel to the receiving surface 110 of the base 100. This makes it possible in particular to prevent rotation of the bowl assembly 200 relative to the base along the receiving axis R.

[0043] Such a protective casing 112 is formed to protect the locking lug 122, in particular when the locking system is in the unlocked position and the receiving surface 110 of the base 100 is left free, in particular when there is no bowl assembly 200 positioned on the base 100. Thus, in the unlocked position the locking lug 122 is entirely housed inside the protective casing 112.

[0044] The lug orifice 111 is preferably provided through a side wall of the protective casing 112, so that in the locked position, the active locking portion 123 of the locking lug 122 can extend at least partially outwardly of the protective casing 112 in order to penetrate the locking orifice 222.

[0045] According to the embodiment illustrated in Figures 2, 4 and 7, the locking wall 221 in which the locking orifice 222 is provided extends inwards from the bottom surface 211 of the bowl assembly 200. Preferably, such a locking wall 221 extends in an inclined manner, that is to say it is not perpendicular to the bottom surface 211 of the bowl assembly 200. If the protective casing 112 has a complementary shape, then it also comprises an inclined wall provided in particular with the lug orifice 111.

[0046] Such an arrangement with an inclined locking wall 221 has several advantages. First, this allows a keyed shape to be formed, and therefore facilitates the positioning of the bowl assembly 200 on the base 100. In addition, this allows the tearing forces to be directed as close as possible to the most rigid part of the active locking portion 123 of the locking lug 122.

[0047] Preferably, the active locking portion 123 of the locking lug 122 also has an inclined wall, as illustrated in Figures 4 and 7. According to such an arrangement, when the locking system is in the unlocked position, the inclined wall of the active locking portion 123 of the locking lug 122 can be positioned in the extension of the inclined wall of the protective casing 112. Such an arrangement with an inclined wall of the active locking portion 123 of the locking lug 122 is also advantageous in that the locking by the active locking portion 123 is operational as soon as the locking lug 122 begins to be deployed from the lug orifice 111 into the locking orifice 222.

[0048] According to an alternative embodiment not illustrated, the configuration is reversed. Thus, the locking arrangement 220 comprises a protruding element extending outwardly from the bottom surface 211 of the bowl assembly 200, such protruding element being partly formed by the locking wall 221 in which the locking orifice 223 is provided. According to this configuration, the receiving surface 110 may comprise a locking cavity extending inwardly of the base 100 and having a shape intended to receive the protruding element, the lug orifice 111 then being provided in a wall of the locking cavity extending from the receiving surface 110. In such a case, the protruding elements extending outwardly from the bottom surface 211 of the bowl assembly 200 may serve as feet for placing the bowl assembly 200 on a placing surface.

[0049] As specified above, the receiving surface 110 may constitute the bottom of a receiving cavity 101 formed in the base 100 and intended to receive the bowl assembly 200.

[0050] According to a preferred embodiment, the receiving cavity 101 of the base 100 and the base 210 of the bowl assembly 200 comprise keying elements (115, 215) cooperating to allow a single positioning of the bowl assembly 200 in the receiving cavity 101 of the base 100.

[0051] As illustrated in Figures 1 and 4, such keying elements 115, 215 may comprise flats formed respectively on the side walls of the receiving cavity 101 of the base 100 and the base 210 of the bowl assembly 200.

[0052] Such keying elements 115, 215 facilitate the placement of the bowl assembly 200 in the receiving cavity 101 of the base 100, and also make it possible to ensure that the elements forming the locking system will be correctly positioned to cooperate without obstruction.

[0053] According to a preferred embodiment, the proposed household appliance comprises a device for detecting the presence of the bowl assembly 200 on the base 100. Such a detection device may for example comprise electronic sensors and / or mechanical sensors for detecting a presence of the bowl assembly 200 on the receiving surface 110 of the base 100.

[0054] Such a presence detection device may be particularly advantageous if it is desired that the proposed locking system can only operate if the bowl assembly 200 is correctly positioned on the base 100.

[0055] Indeed, a control device may also be provided configured to control the drive device 130 only when the bowl assembly 200 is correctly positioned on the receiving surface 110 of the base 100.

[0056] According to another preferred embodiment, the household appliance also comprises a means for switching on the appliance and a means for activating a culinary preparation, the control device being configured to move the locking ring 121 from the unlocked position to the locked position when activating a culinary preparation. Conversely, the control device can be configured to move the locking ring 121 from the locked position to the unlocked position when stopping a culinary preparation.

[0057] A possible operation of the food preparation appliance is now described, in particular with regard to the locking and unlocking of the bowl assembly 200 on the base 100.

[0058] In a first step, the bowl assembly 200 is placed on the receiving surface 110 of the base 100, and an electrical connection of the two elements is made, for example by a pin system. The electronics of the household appliance then detect the presence of the bowl assembly 200.

[0059] When inserting or removing the bowl assembly 200 relative to the base 100, the locking system, and in particular each locking lug 122, is positioned as illustrated in FIGS. 4, 5, and 6 in the unlocked position. In this unlocked position, the locking lugs 122 are housed inside the corresponding protective casings 112. Thus, not only do they not oppose the movement of the bowl assembly 200 relative to the base 100, but the receiving surface 100 is also free of any obstacle.

[0060] In a second step, when a recipe is launched by the user for example, and depending on the response from the first step (electronics which detects or not the presence of the bowl assembly 200), information is sent to the motorization subassembly of the locking system 120, which actuates the pallet 121 to move the locking lugs 122 in translation.

[0061] The locking lugs 122, for example in the form of hooks, will be inserted into the locking orifices 222 of the bowl assembly 200, as illustrated in FIGS. 7, 8 and 9. The bowl assembly 200 is thus clamped to the engine block of the base 100. Indeed, any movement along the receiving axis R is prevented by the cooperation between the locking lugs 122 and the locking orifices 222 of the bowl assembly 200. Furthermore, movements along a plane parallel to the receiving surface 110 of the base 100 and rotation around the receiving axis R are prevented by the specific shapes of the protective casings 112 and the corresponding locking cavities 224.

Claims

Claims

1. A household appliance for preparing food, comprising a base (100) having a receiving surface (110); a bowl assembly (200) comprising a base (210) and a bowl (250) for receiving food, the base (210) having a bottom surface (211) and the bowl (250) extending from the base (210) on the side opposite the bottom surface (211), the bowl assembly (200) being intended to be positioned in the base (100) with the bottom surface (211) of the base (200) placed opposite the receiving surface (110); wherein the base (100) comprises a locking device (120) for locking the bowl assembly (200), the locking device (120) comprising a locking lug (122) mounted in translation relative to the receiving surface (110) along a translation axis parallel to the receiving surface (110), the locking lug (122) being provided to extend through a lug orifice (111) provided through the receiving surface (110), the locking lug (122) having an active locking portion (123) extending in a direction substantially parallel to the receiving surface (110), wherein the base (210) of the bowl assembly (200) comprises a locking arrangement (220) with a locking wall (221) extending from the bottom surface (211), a locking hole (222) being provided through the locking wall (221), the locking hole (222) being intended to receive the active locking portion (123) of the locking lug (122), the base (100) comprising a drive device (130) coupled to the locking device (120) and adapted to translate the locking lug (122) between a locked position where the active locking portion (123) of the locking lug (122) is inserted into the locking hole (222) of the locking arrangement (220) to lock the bowl assembly (200) to the base (100), and an unlocked position in which the bowl assembly (200) can be moved relative to the base (100).

2. Household appliance according to claim 1, in which the base (100) comprises a receiving axis orthogonal to the receiving surface (110), the receiving axis being positioned substantially in the center of the receiving surface (110) and being merged in the locked position with a central longitudinal axis of the bowl assembly (200), the receiving axis translation of the locking lug (122) not intersecting the receiving axis (R) of the base (100).

3. Household appliance according to claim 2, wherein in the locked position, the active locking portion (123) of the locking lug (122) extends tangentially to a circle parallel to the receiving surface (110) and having a center passing through the receiving axis (R).

4. A household appliance according to any one of claims 1 to 3, wherein the locking arrangement (220) comprises a locking cavity (224) extending inwardly from the bottom surface (211) of the bowl assembly (200), the locking cavity (224) being partly formed by the locking wall (221) in which the locking hole (222) is formed.

5. A household appliance according to claim 4, wherein the base (100) comprises a projecting protective casing (112) extending outwardly from the receiving surface (110), the protective casing (112) being adapted to be received in the locking cavity (224) in the locked position.

6. A household appliance according to claim 5, wherein the protective casing (112) is provided to receive the locking lug (122) so that in the unlocked position the locking lug (122) is entirely housed inside the protective casing (112), and in the locked position the active locking portion (123) of the locking lug (122) extends at least partially outwardly from the protective casing (112) into the locking orifice (222).

7. A household appliance according to any one of claims 4 to 6, wherein the locking wall (221) in which the locking hole (222) is provided extends inwardly from the bottom surface (211) of the bowl assembly (200) in an inclined manner not perpendicular to the bottom surface (211) of the bowl assembly (200).

8. A household appliance according to any one of claims 1 to 3, wherein the locking arrangement (220) comprises a protruding element extending outwardly from the bottom surface (211) of the bowl assembly (200), the protruding element being partly formed by the locking wall (221) in which the locking hole (222) is formed, and wherein the receiving surface (110) comprises a locking cavity extending inwardly of the base (100) and having a shape intended to receive the projecting element, the lug orifice (111) being provided in a wall of the cavity extending from the receiving surface (110).

9. A household appliance according to any one of claims 1 to 8, wherein the locking device (120) comprises a plurality of locking lugs (122), each locking lug (122) being intended to cooperate with a respective locking orifice (222) provided through the locking wall (221) of the base (210) of the bowl assembly (200).

10. Household appliance according to claim 9, wherein at least two locking lugs (122) among the plurality of locking lugs (122) are arranged parallel to each other, the at least two locking lugs (122) being mounted in translation along translation axes parallel to each other and extending in a translation plane parallel to the receiving surface (110).

11. Household appliance according to claim 10, wherein the at least two locking lugs (122) are configured to move in the same translational direction to move from the locked position to the unlocked position, and vice versa to move from the unlocked position to the locked position.

12. A household appliance according to any one of claims 1 to 11, wherein the base (100) comprises a receiving cavity (101) with a bottom forming the receiving surface (110), the bowl assembly (200) being intended to be positioned in the receiving cavity of the base (100), the receiving cavity (101) and the base (210) of the bowl assembly (200) comprising keying elements (115, 215) cooperating to allow a single positioning of the bowl assembly (200) in the receiving cavity of the base (100).

13. A household appliance according to claim 12, wherein the keying elements (115, 215) comprise flats formed respectively on the side walls of the receiving cavity and the base (210) of the bowl assembly (200).

14. Household appliance according to any one of claims 1 to 13, further comprising a device for detecting the presence of the bowl assembly (200) on the base (100), the detection device comprising electronic sensors and / or mechanical sensors for detecting a presence of the bowl assembly (200) on the receiving surface (110) of the base (100).

15. A household appliance according to any one of claims 1 to 14, further comprising a control device configured to control the drive device (130) only when the bowl assembly (200) is positioned on the receiving surface (110) of the base (100).

16. A household appliance according to claim 15, further comprising means for powering on the appliance and means for activating a culinary preparation, the control device being configured to move the locking lug (122) from the unlocked position to the locked position upon activation of a culinary preparation.

17. Household appliance according to claim 16, wherein the control device is configured to move the locking lug (122) from the locked position to the unlocked position when stopping a food preparation.

18. A household appliance according to any one of claims 1 to 17, wherein the drive device (130) comprises a drive motor separate from a motor provided in the base (100) for food preparation.

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