SI25883A - Drive unit for kitchen machine - Google Patents

Abstract

The drive unit 100, 100a, 100b for the kitchen machine is disclosed. The drive unit comprises a driven member 110, 110b for connection to at least one rotary tool 180a, 180b of the food processor. It is adapted to be connected to a shaft that can be rotated by an electric motor and converts its rotation into the rotation of a driven element. The drive unit has a gear ratio of less than one. A machining device 10a, 10b for a kitchen machine is also disclosed. The machining device comprises a machining vessel 200 for mounting on a kitchen machine base and a drive unit 100, 100a, 100b according to the invention, which is connected or can be connected to a shaft surrounded by the base and can be rotated by its electric motor. Further disclosed is a kitchen appliance with a machining device 10a, 10b and a base comprising an electric motor and a shaft rotatable therewith. The drive unit 100, 100a, 100b of the machining device 10a, 10b is connected to the shaft or is designed to be connected to it.

Description

Kitchen machine drive unit

Description

The present invention relates to a kitchen machine drive unit, a machining device with a kitchen machine drive unit and a kitchen machine with a drive unit.

Rotary kitchen machines are used for processing, for example for chopping, mixing and / or mixing food using rotating tools. They usually include a processing container for receiving the food to be processed, an electric motor and at least one processing tool located inside the processing container and which can be rotated there by means of an electric motor. The rotational speed of the electric motor can often be set steplessly or in predetermined steps by means of an electronic system; less complex devices can also be designed for just one rotational speed.

Individually or each time the higher rotational speed should be adapted to at least one intended use, for example the use of a cube cutter, a fruit squeezer or a kneading device. The associated tools require a rotational speed that is low compared to that required for other uses, such as chopping food. It is then not possible to use a single kitchen machine for these, or at least it cannot be used effectively.

The present invention is based on the object of extending the possible uses, in particular simple kitchen machines with a rotating function.

The object is solved by a drive unit according to claim 1, a machining device for a kitchen machine according to claim 9 and a kitchen machine according to claim 10. Preferred embodiments are disclosed in the dependent claims, description and figures.

The drive unit according to the invention is intended for use with a kitchen machine (electric, which has a rotating function). The drive unit is designed to be connected to a shaft (preferably detachable) which can be rotated by means of an electric motor directly (ie directly) or indirectly (ie using at least one intermediate element, in particular a coupling element). In such a connected state, the drive unit can transmit the rotational shaft to the driven element surrounded by the drive unit each time. The driven element is adapted so that it can be connected (directly or indirectly) to at least one (in each case, not necessarily belonging to the drive unit) rotating tool and thus transmits its rotation to the rotating tool. According to the invention, the drive unit has a gear ratio (determined by the ratio of the driving speed (shaft speed) and the output speed (speed of the driven element)) which is less than one; when using the drive unit, the driven element also rotates at a higher rotational speed than the shaft.

Such a drive unit enables the efficient use of rotating tools in an easy way to perform and in a solid way, even if the electric motor of each kitchen machine does not immediately provide the rotational speed required for the operation of each rotating tool. In particular, it is therefore possible to equip simple electric kitchen machines with a rotating function, the unit comprising an electric motor is optimized for certain tools in terms of noise generation and efficiency (for example for a juicer, mixer, dough kneader and / or cube cutter) , so that it can also be used for rotary tools (for example cutting or other chopping tools), which must be used for efficient or rotate the desired machining function at a higher rotational speed than originally intended.

Particularly preferred are those embodiments of the drive unit according to the invention in which said gear ratio is at least 1.5 or at least 2 and / or at most 5 or at most 4.

The drive unit is preferably designed as a mechanical gearbox. In particular, it may comprise at least one gear drive. The rotary tool may comprise, for example, a mixing or cutting tool, in particular a rotary knife, a rotary scraper and / or a cutting disc. According to preferred embodiments, the rotary axis of the driven element coincides with the rotational axis of the shaft in the state when the drive unit is connected to the shaft.

The processing device according to the invention for the kitchen machine comprises a processing container for mounting on the stand of the kitchen machine and a drive unit according to the invention according to one of the embodiments disclosed in this document. The drive unit is (directly (ie in direct contact) or indirectly (ie using at least one intermediate element)) connected or can be connected (ie connected) to the rotating shaft of the electric motor surrounded by the base.

The processing vessel may comprise a coupling element which (in the case of an indirect connection of the drive unit to the shaft) can be provided as an intermediate element in the connection. Preferably, such a coupling element is then rotated (permanently or detachably) anchored in the area of the bottom of the processing vessel. In particular, it can lead through the bottom of the processing vessel.

According to preferred embodiments of the processing device according to the invention, the processing container comprises at least one cover element for covering the receiving space for food processing.

The kitchen appliance according to the invention comprises a base (which can be connected to a power source) with an electric motor and a shaft rotatable by means of it, and a machining device according to the invention according to one of the embodiments disclosed in this document. Its drive unit is (directly or indirectly) connected or can be connected (connected) to the shaft. The base can be designed without an electronic unit for controlling the rotational speed of the electric motor. In particular, it can be adapted to provide only three rotational speeds, only two rotational speeds or even only one rotational speed of the shaft by means of an electric motor (when it is connected to a power source).

According to preferred embodiments, the drive unit according to the invention comprises at least one rotatable transmission element adapted to be directly or indirectly (eg using at least one intermediate element, for example a coupling part surrounded by the drive unit, and / or a coupling element which is connected to the machining vessel or which is connected to the machining vessel and which can be separated from the drive unit) is rotated by means of a shaft in a state in which the drive unit is connected to the shaft of the electric motor. gnan element. In this case, at least one transmission element can assume the rotational speed of the shaft or be rotated at a changed (preferably increased) rotational speed compared to the shaft. Similarly, the driven element (alternatively or additionally) can be adapted to assume the rotational speed of at least one transmission element or to rotate with it at a rotational speed that is changed (preferably increased) compared to at least one transmission element.

Preferably, the at least one transmission element has a rotary axis running parallel to the rotational axis of the driven element and / or (in the state of the drive unit when connected to the shaft) with the rotary axis of the shaft. The drive unit can therefore be designed to be particularly compact.

For the transmission (if necessary in connection with the change of rotational speed) of each rotation, they have at least one transmission element, shaft or. if necessary, an intermediate element and / or a driven element is used in each case, for example a gear structure, which in each case engages with the gear structure of the second of these elements. Different diameters of gear structures can cause different rotational speeds in a known way.

The drive unit according to the invention may comprise a plurality of preferably formed transmission elements (which are in each case adapted to rotate in the state of the drive unit when connected to the shaft by means of a rotating shaft and thereby rotatably drive the driven element). mutually arranged rotatably symmetrically about the rotational axis of the driven element (i.e. evenly distributed around the rotational axis of the driven element). The drive unit may, for example, have exactly two such transmission elements which are rotatably symmetrically arranged at an angle of 180 ° about this axis of rotation; the same applies, for example, to exactly three 120 ° transmission elements and to exactly four 90 ° transmission elements. Particularly preferred is such an arrangement of three, four or more transmission elements that causes stabilization of the driven element.

According to preferred embodiments with several transmission elements, these (especially in the transmission section for transmitting rotation) each have a gear structure that engages with the gear structure of the driven element (especially the receiving area of the driven element used to receive rotation). In this case, the gear structures of at least two of the transmission elements in the operation of the transmission unit (ie in the rotation of the driven element in particular) preferably reach their maximum retracting depth into the gear structure of the driven element. This makes it particularly advantageous to rotate.

Preferably, the drive unit according to the invention comprises, in addition to at least one (as mentioned above) transmission element, a coupling part adapted to rotate by means of a shaft in the state when the drive unit is connected to the shaft. further element) and that it rotates at least one transmission element. The rotary drive can be performed by means of interlocking gear structures on the transmission element (s) and the coupling part.

At least one transmission element can assume the rotational speed of the coupling part or has a modified, preferably increased rotational speed compared to the joint part. Alternatively or additionally, the coupling part may be adapted to assume the rotational speed of the shaft. In particular, it may comprise a cup-shaped receiving segment for receiving rotation, adapted to be connected to the end section of the shaft or an additional element (in particular a coupling element of the processing vessel with which the drive unit can be used). To transmit rotation, the cup-shaped receiving segment preferably has a profile into which it engages the end section profile.

The joint part can in particular fulfill the function of an adapter, as on the one hand it is adapted to the dimensions of the shaft or. an intermediate element arranged, if necessary, between the shaft and the coupling part (in particular the coupling element as mentioned above) and, on the other hand, allowing suitable dimensions of at least one transmission element.

Preferably, the rotary axis of the coupling part coincides with the rotational axis of the shaft and / or the driven element.

According to preferred embodiments, the drive unit according to the invention comprises a holding housing adapted to be non-pivotably connected to the processing vessel of the kitchen machine. In this case, the holding housing is preferably connected via the end of the shaft projecting into the machining vessel and / or (in suitable embodiments) via at least one section of the coupling element belonging to the machining vessel, which is coupled or can be coupled to the shaft.

In particular, the retaining housing in the state when connected to the machining vessel preferably at least partially surrounds the coupling area of the drive unit on the shaft, i.e. the area in which the drive unit in the state when connected to the shaft touches the end of the shaft or intermediate element connected. with shaft (eg coupling element as mentioned above). In embodiments with a coupling part (belonging to the drive unit), as described above, such a coupling area may comprise, for example, at least one section of the coupling part. In embodiments with at least one transmission element adapted to connect to one end of the shaft or to a coupling element (belonging to the machining vessel and separable from the drive unit), the coupling area may comprise a (receiving) section of at least one transmission element , which is intended for contact with the end of the shaft or. with a coupling element (or for receiving rotational motion).

Particularly preferred are embodiments in which the holding housing is adapted to surround the coupling area in a moisture-impermeable manner in the state of the drive unit when connected to the machining vessel and together with the machining vessel area.

Thus, the holding housing, which at least partially surrounds the coupling area, thus protects the connection of the drive unit to the shaft.

According to preferred embodiments of the present invention, the drive unit comprises at least one tool holder which is (preferably detachably) connected to or connected to the driven element and can then be rotated therewith. The rotating tool can be (directly or using at least one intermediate element, preferably in each case non-rotating and / or detachable) attached or can be attached to the tool holder. In the case of versions with a holding housing, this can be at least partially surrounded by the tool holder.

Preferably, the drive unit comprises a plurality of interchangeable such tool holders, for example for different machining tools. Such a drive unit can therefore be used particularly flexibly.

The drive unit may comprise a rotating tool or. at least one rotating tool, for example at least one mixing and / or chopping tool, in particular a rotary knife, a rotary scraper and / or a cutting disc.

With the vertical orientation of the intended rotary axis of the driven element and in the state in which the rotating tool is attached to the tool holder and connected to the driven element, the rotating tool may comprise at least one tool section located in the lower half, lower quarter or lower eighth the drive unit and / or at least one tool area located in the upper half, upper quarter or upper eighth of the drive unit. In particular, the drive unit is suitable for processing food in the area of the bottom of the container of the processing container (for example with a rotating knife as a rotating tool) and / or in the area of the cover element of the processing container (for example with a cutting and / or scraping plate as a rotating tool).

According to preferred embodiments, the drive unit according to the invention comprises at least one bearing other than an element (e.g. a pin) for stabilizing the drive unit in the cover element of the processing vessel. Such a bearing element can be connected to the driven element and / or in embodiments which also include a tool holder, as mentioned above - to the tool holder. In this case, it can be connected to the driven element or. tool holder (and then adjusted so that it can be rotated in the bearing position in the cover element), or it can be rotated according to the driven element or. the tool holder connects to it.

A machining vessel of a machining device according to the invention having such a drive unit may comprise a cover element with such a bearing grip for (non-rotating or rotatable) receiving such a bearing member.

Alternatively or additionally, the drive unit according to the invention may comprise a receptacle for separately inserting a bearing element (such as a pin in particular): Such a bearing element can then be rotatably or rotatably arranged on the cover element (especially the bearing bearing belonging to the cover element). to use the drive unit in reception.

A machining vessel of a machining device according to the invention, comprising such a drive unit, may comprise such a cover element by receiving a bearing for the bearing element and / or with a bearing element.

In the following, the preferred embodiments of the invention are explained in more detail on the basis of the figures. It is understood that the individual elements and components may also be combined differently than shown. Reference marks for elements that match each other are used on multiple images and are not described for each image anew.

It is understood that real size ratios may differ from those shown.

The pictures show schematically:

Figure 1: an embodiment of a drive unit according to the invention in cross section;

Figure 2: a cross-section of a first example of a machining device according to the invention with a drive unit comprising a first tool holder and a first rotary tool; in

Figure 3: a cross-section of a second example of a machining device according to the invention with a drive unit comprising a second tool holder and a second rotary tool.

Figure 1 shows a cross-section of an embodiment of a drive unit 100 according to the invention in the intended direction of use. The drive unit comprises a holding housing 140 adapted to be anchored at the (not shown) bottom of the container of the machining vessel and thereby surrounding the section of the shaft of the electric motor and / or additional joint element through the bottom of the vessel (also not shown).

The drive unit 100 further comprises a rotatable driven member 110 having a transmission area 111 equipped with a rotationally symmetrical toothed profile for non-rotating connection to a rotating tool not shown, a receiving area 113 equipped with a gear structure for receiving or. taking over the rotation of the rotating transmission elements 120, 120 'as well as the shaft element 112, which non-pivotally connects the transmission area 111 and the receiving area 113, and which is rotatably mounted in the bearing sleeve 160.

The bearing sleeve 160 is held by a cover structure 150 which is arranged on (in the shown direction of the drive unit 100 above) the edge of the holding housing 140 and together with the holding housing 140 forms a receiving space, in particular for several transmission elements 120, 120 '.

By means of the coupling part 130, the drive unit 100 (directly or by means of an additional coupling element as mentioned above) can be coupled to the (not shown) motor shaft so that the toothed receiving segment 133 of the coupling part 130 can be attached (not shown) to the end. shaft or a coupling element equipped with a (eg star-shaped) profile. In this way, the coupling part 130 with its receiving segment 133 can receive the rotation of the shaft and transmit it to the transmission elements 120, 120 'with the transmission segment 131, which in this case is designed with a gear structure, and therefore rotates them.

The respective rotational axes of the transmission elements 120, 120 'are parallel to the rotational axis A of the joint part 130, which (like the rotary axis of the driven element 110) corresponds to the (abstract) central axis of the drive unit 100.

To receive the rotation of the coupling part 130, the transmission elements 120, 120 'each have a receiving section 123, 123' with a gear structure engaging in the gear structure of the transmission segment 131 of the coupling part 130.

In addition, the transmission elements 120, 120 'each have a central axial element 122, 122' and a transmission section 121, 121 '.

The forward section 121, 121 'is non-rotating and is even formed entirely with the receiving section 123, 123'. The rotation of the receiving section 123, 123 'thus causes the rotation of the transmitting section 121, 12Γ, which also has a gear structure. In each case, it engages in the gear structure in the receiving area 113 of the driven element 110, whereby the latter can be rotated. In this embodiment, the transmitting sections 121, 121 'occupy their respective maximum pick-up depth with a time delay: the transmitting section 12 Γ, shown on the right in the figure, in the shown situation picks deeper into the receiving area 113 than the transmitting section 121 shown in left side of the image. This makes rotation transmission particularly efficient.

Since the receiving section 123, 123 'of the transmission elements 120, 120' has a smaller radius in each case than the transfer zone 131 of the coupling part 130, the rotation of the coupling part 130 at the first rotational speed causes the transmission elements 120, 120 'to rotate at a different rotational speed higher than first.

Since the transmission sections 121, 121 'of the transmission elements 120, 120' have a larger diameter than the receiving area 113 of the driven element 110, the rotational speed increases (again) as the rotation is further transmitted from the transmission elements 120, 120 'to the driven element 110. Despite the mentioned size difference in diameter, the compact design of the drive unit 100 (or the receiving space for the transmission elements 120, 120 ') is made easier by the transmission elements 120, 120' having a larger diameter in their transmission sections 121, 121 '. as on its receiving sections 123, 123 '.

In particular, the driven member 110 rotates at a higher rotational speed during operation than the coupling part 130. The drive unit 100 thus has a gear ratio of less than one.

The central axial element 122, 122 'of the transmission elements 120, 120' is each held at one end by means of a holding housing 140 and at the other end by means of a cover structure 150. It can be formed as a rotating axis formed non-pivotally by the transmission section 121, 121 'and the receiving section 123, 123' (and then rotatably mounted also in the holding housing 140 and the cover structure 150) or as a fixed axle, which can then be fixed non-rotatably in the holding housing 140 and / or the cover structure 150 and around which the receiving section 123, 123 'and the transmitting section 121, 121' rotatable.

Two of the transmission elements 120, 120 'of the exemplary drive unit 100 according to the invention, which are visible in the cross-section shown, are arranged rotationally symmetrically with respect to each other by 180 ° with respect to the rotational axis A of the driven element 110. In addition, the drive unit 100 may comprise one or more further transfer elements. In particular, it may, for example, have a total of exactly four transmission elements which can be rotatably symmetrically arranged around the A axis with a rotation angle of 90 ° (that is, they form 4 times the rotational symmetry). This allows a particularly stable framing of the receiving area 113 by the front sections 121, 121 '.

Figure 2 is a cross-sectional perspective view of a machining device 10a according to an exemplary embodiment of the present invention. The machining device 10a comprises a machining container 200 for mounting on a pedestal (not shown) and a drive unit 100a according to the invention.

The machining container 200 has a bottom 210 of the container with a central opening through which the coupling element 230 protrudes. This can be connected to a shaft that can be rotated by means of an electric motor belonging to the base (not shown).

The characteristics of the drive unit 100a corresponding to the characteristics of the drive unit 100 already described with reference to Figure 1 are not re-described herein to avoid duplication.

In the position shown in Fig. 2, the holding structure 140 of the drive unit 100a is pivotally connected to the processing vessel 200 and is connected via a part of the coupling element 230. Together with the processing vessel region 200, it encloses the holding housing 140 (preferably in a moisture-proof manner). ) in particular the coupling area, which in this case is determined by the contact area of the coupling part 130 of the drive unit 100a with the coupling element 230.

The drive unit 100a can preferably be separated from the processing vessel 200 and in particular from the coupling element 230.

In addition to the features described above with reference to Figure 1, the drive unit 100a has a tool holder 170a, which in this case surrounds the driven element 110, the holding structure 140 and the cover structure 150. The serrated profile in the transmission area 111 of the driven element 110 (see Figure 1) in doing so, it engages in the corresponding profile of the tool holder 170a so that the rotation of the driven member 110 is transmitted to the tool holder 170a. Related to this is a rotary tool 180a, which in this case is designed as a rotary knife and is adapted to rotate in the region of the bottom 210 of the container (along it) in the shown state of the drive unit 100a when connected to the machining vessel. . In the shown orientation of the drive unit 100a, the rotary tool 180a is arranged in particular in the lowest axis of the drive unit.

Because the drive unit 100a (like the drive unit 100, see above) has a gear ratio of less than one, the knife achieves a higher rotational speed than the shaft of the electric motor. Thus, the associated kitchen appliance can be used efficiently for chopping food, even with a simple design and low rotational speed that can be achieved with an electric motor.

For stabilization, the drive unit 100a has a bearing element 190a (in this case in the form of a pin) held by the tool holder 170a and a bearing receiving 221 in the cover element 220 of the machining vessel 200. In the embodiment shown, the bearing element 190a is non-rotatably framed by the tool holder 170a is pivotally mounted in bearing housing 221; alternatively, it can be pivotally mounted in the tool holder 170a or in the tool holder 170a as well as in the bearing receptacle 221.

Figure 3 is a perspective cross-sectional view of a further embodiment of the machining device 10b according to the invention. This comprises a machining vessel 200, which is designed as the machining vessel of the machining device 10a described with reference to Figure 2, and is therefore not described again.

In the situation shown, the drive unit 100b according to the invention is further mounted on the coupling element 230 of the processing vessel 200 (preferably separately). The drive unit 100b differs from the drive unit 100 described with reference to Figure 1 in that it further comprises a tool holder 170b, a associated machining tool 180b designed as a cutting disc, and a design of the transmission area 11 lb of the driven element 11. Ob comprising receiving a holder for non-rotating holding of the bearing member 190b. In the shown inserted state of the drive unit 100b, the bearing element 190b is also pivotally mounted in the bearing receiving 221 of the cover element 220. .

The tool holder 170b has an annular structure through the center of which a transfer area 11 Ib and a bearing member 190b guide. The transmission area 11 Ib is pivotally connected to the tool holder 180b by means of surface structures (eg tips) which engage each other, so that the rotation of the driven element surrounding the transmission area 11 Ib is transmitted to the tool holder 170b and thus to the machining tool 180b associated therewith. In this embodiment, it is arranged in the area of the lid element 220 and is thus adapted to rotate along the surface of the lid element 220 facing the bottom of the container. Thus, the food fed through the filling tube 222 of the cover element 220 can be chopped with a processing tool 180b designed as a cutting disc and then intercepted inside the processing vessel 200. In particular, the processing tool 180b is arranged in the shown drive unit orientation 100b in its upper eighth.

Because the drive unit 100b (like the drive units 100 and 100a, see above) has a gear ratio of less than one, the cutting disc achieves a higher rotational speed than the shaft of the electric motor. Thus, the associated kitchen machine can be effectively used for chopping food even with a simple structure and lower rotational speed that can be achieved with an electric motor.

The drive unit 100, 100a, 100b for the kitchen machine is disclosed. The drive unit comprises a driven element 110, 11 Ob for connection to at least one rotary tool 180a, 180b of the food processor. It is adapted to connect to a shaft that can be rotated by an electric motor and to convert its rotation into the rotation of a driven element. The drive unit has a gear ratio that is less than one.

Furthermore, the machining device 10a, 10b for the food processor is disclosed. The machining device comprises a machining vessel 200 for mounting on a kitchen machine base and a drive unit 100, 100a, 100b according to the invention, which is connected or can be connected to a shaft surrounded by the base and can be rotated by its electric motor.

Furthermore, a kitchen machine with a machining device 10a, 10b and a base comprising an electric motor and a shaft which can be rotated therewith is disclosed. The drive unit 100, 100a, 100b of the machining device 10a, 10b is connected to the shaft or is adapted to be connected to it.

Reference codes:

lOa, lOb machining preparation 100, lOOa, lOOb drive unit 110, 1 lOb gnan element 111, 11 Ib transmission area of the driven element 112 beam element 113 the receiving area of the driven element 120, 120 ' portable element 121, 121 ' the transmitting section of the transmission element 122, 122 ' axial element 123,123 ' the receiving section of the transmission element 130 coupling part 131 the transfer segment of the coupling part 133 receiving segment of the coupling part 140 holding housing 150 cover structure

bearing coupling tool holder rotating tool bearing element machining container bottom of the container cover element of the processing container bearing reception in the cover element filling tube coupling element rotary axis of the driven element

Claims (10)

Patent claims A drive unit (100, 100a, 100b) for a food processor, the drive unit comprising a driven element (110, IlOb) for connection to at least one rotary tool of the kitchen machine and adapted to connect to a shaft which can be rotated by by means of an electric motor and for converting its respective rotation into rotation of a driven element (110, 1 lOb), and wherein the drive unit has a gear ratio of less than one. A drive unit according to claim 1, comprising at least one rotatable transmission element (120, 120 ') adapted to rotate by means of a shaft in the state where the drive unit is connected to the shaft, and thereby rotatably driven by the shaft. element (110, 1 lOb). A drive unit according to claim 2, further comprising a rotatable coupling part (130) adapted to rotate in the connected state of the drive unit by means of a shaft and thereby rotatably drive at least one transmission element (120, 120 '). A drive unit according to claim 2 or 3, comprising a plurality of transmission elements (120, 120 ') arranged rotatably symmetrically with respect to each other about the rotary axis (A) of the driven element (110, 1Ob). A drive unit according to any one of the preceding claims, further comprising a holding housing (140) adapted for non-pivotal connection to the processing vessel (200) of the kitchen machine and at least partially surrounding the coupling area of the drive unit on the shaft. A drive unit according to any one of the preceding claims, further comprising a tool holder (170a, 170b) which is connected or can be connected to the driven element (110, 1 lOb) and on which the rotating tool (or can be attached) is attached or can be attached. 180a, 180b). A drive unit according to claim 6, further comprising a rotating tool (180a, 180b) which is attached or can be attached to the tool holder (170a, 170b) and which is in the vertical direction of the intended rotary axis (A) of the driven element - arranged with at least one section of tool in the lower half, lower quarter or lower eighth of the drive unit and / or - arranged with at least one tool area in the upper half, upper quarter or upper eighth of the drive unit. A drive unit according to any one of the preceding claims, comprising a bearing element (190a, 190b) for stabilizing the drive unit on the cover element (220) of the processing vessel. A machining device (10a, 10b) for a kitchen appliance, the machining device comprising a machining container (200) for mounting on a kitchen appliance base and a drive unit (100, 100a, 100b) according to any one of the preceding claims, wherein the drive the unit is connected or can be connected to a shaft surrounded by a pedestal and can be rotated by means of its electric motor. A kitchen appliance with a base comprising an electric motor and by means of it a rotating shaft and a processing device (10a, 10b) according to claim 9, the drive unit (100, 100a, 100b) is connected or can be connected to the shaft.