Preparation vessel for connecting to a receiving area of a base device of a kitchen appliance
Patent Information
- Application Number
- PL2024168511T
- Authority / Receiving Office
- PL · PL
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2020-03-06
- Publication Date
- 2026-08-31
- Estimated Expiration
- 2040-03-06
Abstract
Description
field of technology
[0001] The invention relates to a preparation vessel for connection to a receiving area of a base unit of an electric motor-operated food processor, wherein the preparation vessel comprises a pot, a lid closing a pot opening of the pot and a locking device for locking the preparation vessel to the base unit of the food processor, wherein the locking device further comprises a displaceable contact element which is arranged on the preparation vessel.
[0002] Furthermore, the invention relates to an electric motor-operated kitchen appliance, in particular a mixer, with a base unit and a preparation vessel that can be connected to a receiving area of the base unit.
[0003] The invention also relates to an electric motor-operated kitchen appliance, in particular a mixer, comprising a base unit and a preparation vessel with a pot that can be connected to a receiving area of the base unit, wherein the receiving area has a locking device for locking the preparation vessel to the base unit of the kitchen appliance and the preparation vessel has a lid locking device that additionally locks a lid to the pot of the preparation vessel. State of the art
[0004] Preparation vessels and kitchen appliances with a preparation vessel are known in the art. The housing of the kitchen appliance can, for example, have a vessel receiving area into which the preparation vessel can be inserted. The vessel receiving area is preferably designed to correspond in shape to the preparation vessel, at least in part, so that the preparation vessel can be aligned both vertically and circumferentially of the preparation vessel during connection to the vessel receiving area.
[0005] Furthermore, a drive shaft, for example, can be arranged in the receiving area, which serves to drive a stirrer located in the preparation vessel. The stirrer is driven by an electric motor on the food processor side for food preparation. To prevent food from splashing out of the preparation vessel during operation of the food processor, in particular the stirrer, and to prevent a user from reaching into the preparation vessel, the preparation vessel has, for example, a lid that can be locked onto the pot by means of a locking device.
[0006] A kitchen appliance known in the prior art is shown, for example, in patent EP 2 813 165 B1. The kitchen appliance has a locking device for locking the preparation vessel to a lid. This locking device has two locking parts that engage over a pot rim and the lid rim and are designed as locking rollers rotating about a substantially horizontal axis. The locking rollers, by engaging over from above, lock the lid to the pot of the preparation vessel, on the one hand, and also lock the preparation vessel to the base unit of the kitchen appliance, on the other hand. The locking rollers can be rotated about a substantially horizontally oriented axis from a release position to a locking position, and vice versa.
[0007] In a food processor known from EP 2 371 251 A1, a locking device is provided for locking the preparation vessel to the base unit. A lid of the preparation vessel can also be locked to the pot of the preparation vessel using the locking device. To lock the preparation vessel to the base unit, the locking is achieved by a projection of the preparation vessel that interacts with a rotatable adjusting part of the base unit. The locking of the lid is achieved by an engagement section provided on the adjusting part, which acts on a compression part of a hydraulic device of the preparation vessel.
[0008] In a food processor known from EP 3 287 054 A1, the preparation vessel has a locking device for locking the preparation vessel to the base unit. In the locked state, return elements of a connecting device of the base unit engage in coupling recesses of a coupling unit of the preparation vessel. The locking device only locks the preparation vessel to the base unit. A comparable prior art is also known from FR 2 908 620 A1.
[0009] Based on a prior art such as that known from EP 3 287 054 A1, the object of the invention is to provide a preparation vessel for connection to a receiving area of a base unit of an electric motor-operated kitchen appliance, which is also advantageous with regard to a lid locking mechanism.
[0010] This object is achieved in the subject matter of claim 1, wherein the contact element is arranged on the preparation vessel in such a way that, when the preparation vessel is properly connected to the base unit, it can be actuated by a corresponding actuating device of the receiving area of the food processor in order to effect locking of the preparation vessel by means of the locking device, wherein the preparation vessel further comprises a lid locking device for locking the pot to the lid and that the lid locking device has a mechanical operative connection to the locking device in such a way that actuation of the locking device effects actuation of the lid locking device.
[0011] Based on the prior art according to EP 2 371 251 A1, the object of the invention is to provide an electric motor-driven kitchen appliance with a base unit and a preparation vessel, in which the locking device is advantageously designed to lock the preparation vessel to the base unit and also the lid to the pot of the preparation vessel.
[0012] This object is achieved in the subject matter of claim 9, wherein the locking device comprises a locking ring which is rotatably displaceable on the base unit in the circumferential direction of the preparation vessel connected to the receiving area, wherein the locking ring, when rotated, locks the base unit to the preparation vessel, and wherein the locking ring comprises a projection which engages behind a corresponding counter-element of the preparation vessel in order to thereby lock the preparation vessel to the base unit, wherein the locking ring of the base unit then acts not only to lock the preparation vessel to the base unit, but also to actuate the lid locking device. Summary of the invention
[0013] According to a first solution, the locking device for locking the preparation vessel to the base unit of the food processor is located on the preparation vessel itself. This eliminates the need for a locking device on the food processor, which would require a specific geometry, particularly height, of the preparation vessel for proper locking. The preparation vessel is designed by the contact element provided on the preparation vessel such that the locking device can be actuated by an actuating device of the food processor accommodating the preparation vessel. For this purpose, the actuating device of the food processor displaces the contact element of the locking device relative to the preparation vessel.The contact element is preferably located on the underside of the preparation vessel, so that when the preparation vessel is connected to the receiving area of the base unit, it comes into contact with a corresponding element of the operating device on the kitchen appliance side. The preparation vessel can have two separately formed elements: a pot for receiving the food to be prepared and a pot base that can be connected to the underside of the pot. The contact element of the locking device is preferably formed in or on the pot base. In this embodiment, the pot of the preparation vessel can be separated from the pot base and, for example, can be cleaned in a dishwasher.In any case, it is essential that the locking device belongs exclusively to the preparation vessel and that an interface is provided on the preparation vessel or the pot base, which allows actuation of the locking device of the preparation vessel by an actuating device of the food processor. The interface is preferably located beneath the preparation vessel, preferably in a region of a substantially horizontal contact surface between the receiving area of the base unit and the preparation vessel, in particular the pot base of the preparation vessel, so that the preparation vessel can have very different shapes, in particular with regard to its height and / or diameter. Compatibility between different preparation vessels and different base units of a food processor is thus enabled.
[0014] A food processor corresponding to the preparation vessel can, for example, have an electric motor that directly drives the contact element of the preparation vessel. Alternatively, the actuating device of the food processor can also act on the contact element via a gear mechanism. The gear mechanism of the food processor can, for example, have one or more toothed elements, for example, at least one gear driven by an output shaft of the electric motor. The contact element of the preparation vessel transmits the drive force via the locking device to an element that locks the preparation vessel to the base unit of the food processor.
[0015] It is proposed that the locking device has a locking ring having the contact element, which is mounted on the preparation vessel so as to be rotatable in the circumferential direction of the preparation vessel. In particular, it is proposed that the locking ring be arranged on the underside of the preparation vessel with respect to a usual position of use of the preparation vessel. The locking ring can, for example, be mounted externally on a peripheral wall of the preparation vessel. Furthermore, it is possible, particularly when using a pot base, for the locking ring to be mounted on an inner wall within the pot base. In a rotationally symmetrical preparation vessel or pot base, the locking ring and the preparation vessel or pot base are aligned coaxially with one another.Further embodiments are conceivable in which the locking ring is not mounted on the inside or outside of a peripheral wall of the locking vessel or the pot base. Rather, the locking ring can also be mounted on the underside of a base surface of the preparation vessel or pot base. In all cases, a fastening element is provided which mounts the locking ring on the preparation vessel in such a way that rotation of the locking ring relative to the preparation vessel is possible. In particular, the locking ring can be mounted on the fastening element or the preparation vessel, for example, via a tongue and groove connection. The locking ring can directly lock the preparation vessel and the base unit or initially act on an intermediate element, which then locks it.The locking ring can, for example, provide an element of a bayonet lock and / or a link with ramps or the like, wherein the ramps in particular enable axial displacement of the preparation vessel relative to the base unit. The ramp can also be used to push or pull the preparation vessel toward the base unit and, in particular, to clamp it in such a way that the locked position of the preparation vessel relative to the base unit is maintained even at high speeds of the food processor's mixer.
[0016] It is proposed that the locking ring have at least one projection suitable for engaging behind a corresponding counter-element of the base unit of the food processor in order to lock the preparation vessel to the base unit. For example, the projection can point radially inward or outward from the locking ring. Particularly preferably, the locking ring has several such projections in order to fix the preparation vessel in several partial areas relative to the base unit. Particularly preferably, at least three projections are suitable for optimally locking the preparation vessel to the base unit. The projection can engage in a corresponding counter-contour of the base unit of the food processor, namely, for example, behind a corresponding counter-element.Such a counter-element can, for example, be designed as a locking hook, under or behind which a projection of the locking ring can be rotated. Particularly preferably, the projection or the corresponding counter-element additionally has a wedge shape, in particular designed as a ramp, in order to enable reliable interlocking of the two contours and to increase the locking force along the rotation path of the locking ring. To unlock the projection from the corresponding counter-element, the locking ring is then rotated in the opposite direction, so that the positive connection between the projection and counter-element is canceled again. The projection and the counter-element can, in particular, also be sub-elements of a bayonet lock, wherein, for example, the projection engages into a corresponding opening in the base unit.
[0017] Furthermore, it can be provided that the contact element is a toothing of the locking ring. According to this embodiment, the locking ring can be actuated directly by means of the actuating device of the receiving area of the food processor. For example, the locking ring can have, at least in sections, internal or external toothing, which can be mechanically contacted by the corresponding actuating device of the food processor. For example, the actuating device itself can also have a toothing element that engages the toothing of the locking ring. The locking ring and the actuating element of the actuating device form a gear transmission that can transmit a drive force from an electric motor of the food processor to the locking device of the preparation vessel.
[0018] As stated, the preparation vessel comprises a pot, a lid closing a pot opening of the pot, and a lid locking device for locking the pot to the lid. The lid locking device has a mechanical operative connection to the locking device such that actuation of the locking device causes actuation of the lid locking device. According to this embodiment, in addition to locking the preparation vessel to the base unit of the food processor, there is also a locking between the pot and the lid of the preparation vessel. For this purpose, the locking device of the preparation vessel is designed such that it can drive further movable parts on the preparation vessel, namely a mechanism for locking the lid to the pot.For this purpose, a coupling element is guided from the locking device, namely in particular the locking ring, to the interface between the pot and the lid.
[0019] In particular, it is proposed that the lid locking device comprise a functional element pivotally connected to the locking ring of the locking device, which is guided by the locking ring to the pot opening. An alternative embodiment may provide that the lid locking device comprise a rotating shaft driven by the locking ring, which is guided by the locking ring to the pot opening. According to the first embodiment, the functional element may be designed, for example, in the manner of an actuating lever, which is mounted on a pivot axis of a peripheral wall of the preparation vessel.The locking ring can, for example, have a driver for the functional element, via which, upon rotation of the locking ring, the functional element pivots about the pivot axis, and an end region of the functional element opposite the driver acts on a lid locking element to lock the lid to the pot. It is particularly advantageous if the functional element is at least partially flexible so that it can be deformed upon actuation in accordance with the shape of the peripheral wall of the preparation vessel. This allows the functional element to be adapted to the peripheral wall of the preparation vessel in any of a multitude of pivot positions (from a release position to a locking position of the functional element).The pivoting path of the functional element, which is required to move from the release position to the locking position, can be regulated in particular by the position of the pivot axis on the functional element. For example, the functional element can have two end regions of equal length relative to the pivot axis, or two end regions of different lengths. In the case of a preparation vessel that widens towards the pot opening, it can be advantageous, for example, to place the pivot axis closer to the locking ring than to the pot opening of the preparation vessel. According to the second proposed embodiment, the lid locking device can have a rotating shaft driven by the locking ring. In this embodiment, the locking ring has, for example, external teeth into which a corresponding toothing of the rotating shaft engages and thus rotates with the locking ring.The end of the rotating shaft facing away from the locking ring can, for example, have a lid locking element, or act on a lid locking element, which then effects the locking between the lid and the pot of the preparation vessel. Furthermore, other embodiments are also conceivable; for example, the lid locking device can have several mechanically interacting drive elements arranged one behind the other from the locking ring to the pot opening, for example, toothed elements that interlock and thus convert the rotational movement of the locking ring into a movement of the lid locking element, which ultimately leads to the locking of the pot with the lid. In particular, a gear transmission can be used, which comprises several mechanically interlocking gears.
[0020] Furthermore, it is proposed that the lid locking device comprise a lid locking element configured to engage behind a portion of the lid and / or to displace the lid relative to the pot, thereby locking the pot to the lid. The lid locking element can, in particular, be mechanically operatively connected to the aforementioned pivotable functional element or the rotary shaft. In particular, it is proposed that the lid locking element be a lid locking ring rotatably mounted on the pot, surrounding the pot opening, and capable of forming a bayonet connection with a portion of the lid.This lid locking ring surrounds the pot opening and is preferably fixed relative to an axial direction of the preparation vessel, so that the lid locking ring can rotate around the pot opening but maintains its axial position relative to the pot opening. To facilitate the rotation of the lid locking ring, a slight axial play may, however, also be permitted. The lid locking ring is rotated, as described above, by actuating the locking device. The lid locking ring can, for example, directly effect a locking between the pot and the lid or initially act on an intermediate element, which then effects the locking. The lid locking ring can, for example, provide an element of a bayonet lock and / or a guide with ramps or the like, which enable a particularly axial displacement of the lid relative to the pot.This allows the lid to be pushed or pulled onto the pot and, in particular, to be clamped in such a way that a fluid-tight locking of the pot is ensured. Alternatively, the lid locking element can also be designed, for example, as a movable, in particular pivotable, hook that engages behind a portion of the lid. Furthermore, the lid locking element can be elastically deformable, for example. The shape of the lid locking element can thus change through elastic deformation, whereby the lid locking element can grip the lid upon deformation and lock it to the pot.Advantageously, it can also be provided that the lid locking element is guided by a guide device of the pot, which brings about an elastic deformation of the lid locking element, so that at least two defined positions, namely an unlocked position and a locked position, can be achieved.
[0021] It can further be provided that the functional element or the rotary shaft is rod-shaped with a predominantly longitudinal extension, wherein the functional element or the rotary shaft is guided in particular through a wall of the pot and / or a pot handle of the pot. The rod-shaped design of the functional element or the rotary shaft enables guidance through the wall of the pot or the pot handle. Due to the elongated design, the functional element or the rotary shaft can be guided from the locking ring to the pot opening, whereby even relatively large distances can be overcome without requiring many individual parts to transmit the mechanical force.This can result in a design in which all elements of the lid locking device are integrated into the housing of the preparation vessel and do not protrude outwards, where a user of the preparation vessel could injure themselves or where food residue or dirt could accumulate. This also facilitates cleaning of the preparation vessel. A cavity can be provided in the wall of the pot or in the pot handle, within which the functional element or the rotating shaft extends. The functional element or the rotating shaft can then act on the lid locking element in the area of the pot opening.
[0022] In addition to the preparation vessel described above, the invention further proposes an electric motor-driven food processor, in particular a mixer, comprising a base unit and a preparation vessel connectable to a receiving area of the base unit, which is designed according to one of the previously described embodiments, wherein the base unit has an actuating device configured to actuate the locking device of the preparation vessel via the contact element of the locking device when the base unit and preparation vessel are connected to one another. As already explained above with regard to the preparation vessel, the locking device is a device of the preparation vessel itself. The electric motor-driven food processor itself does not provide any locking elements that fix the preparation vessel to the base unit of the food processor.However, the base unit of the food processor has the actuating device, which serves to actuate the locking device of the preparation vessel. For this purpose, an actuating element of the base unit advantageously engages beneath the preparation vessel to actuate the contact element of the food processor. The actuating element of the base unit can, for example, be a drive pinion, which moves or displaces the contact element of the preparation vessel. The further features and advantages of the food processor are furthermore apparent as previously explained with regard to the preparation vessel. Overall, this creates a food processor that can be operated with a variety of differently designed preparation vessels. In particular, the proper functioning of the food processor is no longer dependent on a specific height of a preparation vessel.Rather, the preparation vessel of the food processor now provides its own locking device, so that the base unit of the food processor does not need to have a locking device for the preparation vessel. Furthermore, and in particular, the pot of the preparation vessel can have a variety of different heights and still be connected to the base unit in such a way that the lid can be optimally locked to the pot. In any case, the pot is designed such that it has a contact element for actuating the locking device by an actuating element of the base unit of the food processor, whereby an actuating device arranged in the base unit can accordingly lock the preparation vessel to the base unit.The base unit preferably has an electric motor with an associated gear as the actuating device, which acts on the contact element of the locking device of the preparation vessel and thus causes the preparation vessel to be locked to the base unit or, in addition, also causes a lid to be locked on the pot of the preparation vessel.
[0023] According to a further solution, the base unit has the locking device for locking the preparation vessel to the base unit. The locking device includes a locking ring which, upon rotation, locks the base unit to a preparation vessel connected to the receiving area of the food processor. The locking ring has a projection which engages behind a corresponding counter-element of the preparation vessel, thus locking the preparation vessel to the base unit. In this embodiment of the food processor, the preparation vessel also has a lid locking device which additionally locks the lid onto the pot of the preparation vessel. According to this embodiment, the locking ring of the base unit then acts not only to lock the preparation vessel to the base unit, but also to actuate an additional lid locking mechanism.Furthermore, the mechanical power transmission can be designed as previously described with regard to the preparation vessel. Short description of the drawings
[0024] The invention is explained in more detail below using exemplary embodiments. They show: Fig. 1 a food processor with a preparation vessel, Fig. 2 a longitudinal section through the food processor and the preparation vessel, Fig. 3 a perspective bottom view of the preparation vessel, Fig. 4 a perspective top view of the food processor, Fig. 5 an enlarged view of a pot base of the preparation vessel according to Fig. 3, Fig. 6 an exploded view of a pot base with a locking device, Fig. 7 a top view of a receiving area of the food processor, Fig. 8 a cross section through the pot base of the preparation vessel, Fig. 9 a cross section through the pot base of the preparation vessel with connection to the receiving area of the food processor in a release position of a locking device, Fig. 10 the preparation vessel and the food processor according to Fig. 9 in a locking position of the locking device, Fig. 11 the pot base according to the section line XI in Fig. 10 , Fig. 12 a preparation vessel with a lid locking device in a release position, Fig. 13 the preparation vessel according to Fig. 12with the lid locking device in a locking position, Fig. 14 the preparation vessel with a sliding lid locking element, Fig. 15 the preparation vessel with a lid placed on it, Fig. 16 the preparation vessel with the lid lifted off, Fig. 17 a preparation vessel with a lid locking device according to an alternative embodiment, Fig. 18 a preparation vessel with a lid locking device according to a further embodiment. Description of the embodiments
[0025] Fig. 1shows a food processor 4 with a base unit 3, which has a receiving area 2 for connection to a preparation vessel 1. The base unit 3 is designed to be particularly flat here, for example, wherein the preparation vessel 1 essentially only stands on the base unit 3, but is not enclosed by it. The base unit 3 of the food processor 4 has a display 22 for displaying functions of the food processor 4 and, if applicable, recipes that can be prepared using the food processor 4. Next to the display 22 is a switch 23, which serves, on the one hand, to switch the food processor 4 on and off, and, on the other hand, to confirm input commands or the like. The preparation vessel 1 has a pot 11 with a pot handle 21 and a pot base 9, which serves for connection to the receiving area 2 of the food processor 4, as well as a lid 13 closing a pot opening 12 of the pot 11 and having a lid opening 19.For example, ingredients can be added into the pot 11 of the preparation vessel 1 through the lid opening 19.
[0026] Fig. 2shows a longitudinal section through the preparation vessel 1 and the food processor 4. The preparation vessel 1 has a wall 20, which here is formed, for example, with a hollow space. The receiving area 2 of the food processor 4 has a housing opening 33 for the passage of a stirrer (not shown). The stirrer can, for example, carry a set of blades which protrude into the preparation vessel 1 and can chop, stir, and / or knead food there. The stirrer is usually driven by an electric motor (likewise not shown). Corresponding to the housing opening 33 of the base unit 3 is a passage opening 32 in the preparation vessel 1, through which the stirrer is guided into the interior of the preparation vessel 1. The base unit 3 of the food processor 4 further has an actuating device 7 with an actuating element 29, which here is designed in the form of a rotatable drive pinion.The drive pinion is rotated by an electric motor 31 of the food processor 4. The preparation vessel 1 has a locking device 5 on the pot base 9 with a locking ring 8, which is rotatably mounted on an inner wall of the pot base 9. The locking ring 8 is held to the pot 11 by a fastening element 25. For example, the fastening element 25 here—as shown in FIGS. Figures 5 and 6shown - a groove 26 into which a ring 27 of the locking ring 8 engages. The fastening element 25 can be fastened to an underside of the pot 11, for example, by means of a screw or snap-in connection. The locking ring 8 has, facing inwards, a contact element 6 in the form of a toothing, which meshes with the toothing of the actuating element 29 of the actuating device 7 of the food processor 4. Furthermore, two radially inward-facing projections 10 are formed on the locking ring 8, which extend in the circumferential direction of the locking ring 8 over defined circumferential sections. Further projections 10 (or just a single one) can also be provided.
[0027] Fig. 4shows the receiving area 2 of the food processor 4 in detail. In addition to the actuating element 29 of the actuating device 7 and the housing opening 33 for the passage of the agitator from the base unit 3 of the food processor 4, two counter elements 15 are located in the receiving area 2 for interacting with the projections 10 of the locking ring 8 of the preparation vessel 1.
[0028] Fig. 6 shows an exploded view of the lower part of the preparation vessel 1 with the pot base 9, the locking device 5, the actuating element 29 of the food processor 4 and the fastening element 25.
[0029] The Figures 7 to 10 show different views of the receiving area 2 of the food processor 4 and the pot base 9 of the preparation vessel 1. Fig. 7 shows a top view of the receiving area 2 of the base unit 3 without the preparation vessel 1 arranged. The Fig. 8shows a section through the pot base 9 of the preparation vessel 1 with the locking ring 8 fastened by means of the fastening element 25, the toothed contact element 6 of which meshes with a toothing of the actuating element 29 of the base unit 3 of the food processor 4. The Figures 9 and 10 show different locking states of the locking device 5 of the preparation vessel 1. In Fig. 9 A release state is shown in which the projections 10 are located in the circumferential direction of the locking ring 8 next to the counter elements 15 of the receiving area 2 of the food processor 4. In this release position, the preparation vessel 1 can be lifted from the receiving area 2 without the projections 10 being held back by the counter elements 15. Fig. 10, however, shows a locking state in which the hook-shaped counter-elements 15 engage over the projections 10 of the locking ring 8 and prevent the preparation vessel 1 from being lifted axially from the food processor 4. In this position, the preparation vessel 1 is securely fixed to the base unit 3 of the food processor 4.
[0030] Fig. 11 shows a longitudinal section through a lower part of the preparation vessel 1 along the line XI according to Fig. 10 . It can be seen how the counter elements 15 engage over the projections 10.
[0031] The invention according to the Figures 1 to 11works in such a way that a user places the preparation vessel 1 with the pot base 9 onto the receiving area 2 of the food processor 4, namely in such a way that the housing opening 33 of the receiving area 2 and the passage opening 32 of the preparation vessel 1 for the agitator are coaxially aligned, i.e., lie one above the other. When correctly aligned, the fastening element 25 attached to the underside of the pot 11 wraps around a contour of the receiving area 2, which delimits the housing opening 33 (and here additionally a passage for electrical connections not shown). The user can then, for example, manually start operation of the locking device 5 in order to fix the preparation vessel to the base unit 3 of the food processor 4.Alternatively, and preferably, a contact switch can be provided on the receiving area 2 of the food processor 4, which contact switch detects contact of a preparation vessel 1 with the receiving area 2 and then automatically initiates operation of the electric motor 31, which rotates the actuating element 29 of the actuating device 7 of the food processor 4. This causes the locking ring 8 of the preparation vessel 1 to rotate. Starting from the position shown in . Fig. 9 In the state shown, the hook-shaped counter-elements 15 of the receiving area 2 engage over the projections 10 of the locking ring 8 as the rotation of the locking ring 8 continues and securely lock the preparation vessel 1 to the food processor 4. It is now possible to operate the food processor 4 even at high speeds of the agitator without there being a risk of the preparation vessel 1 tipping or rattling.
[0032] The locking of the locking ring 8 with the counter-elements 15 of the base unit 3 is facilitated by a wedge-shaped end face (relative to the direction of rotation) of the projection 10 or the counter-element 15. Such a wedge shape on the contact surfaces enables reliable engagement of the mutual contours of the projection 10 and the counter-element 15. Furthermore, the locking force can thereby be further increased along a ramp until a play-free connection is finally created between the preparation vessel 1 and the receiving area 2 of the food processor 4. To unlock the preparation vessel, the locking ring 8 is then rotated again in the opposite direction, so that the positive connection of the projection 10 with the corresponding counter-element 15 is canceled.
[0033] The Figures 12 to 18show further embodiments of preparation vessels 1 according to the invention, which, in addition to a locking device 5 for locking the preparation vessel 1 to the base unit 3 of the kitchen appliance 4, also additionally have a lid locking device 14 for locking the pot 11 of the preparation vessel 1 to the lid 13. The Figures 12 to 16 show a first embodiment of such a lid locking device 14, while the Figures 17 and 18 each represent further embodiments.
[0034] The lid locking device 14 according to the Figures 12 and 13has a pivotable functional element 17, which is mounted on a pivot axis 28 arranged on the pot 11 of the preparation vessel 1. The functional element 17 is, on the one hand, mechanically connected to a locking ring 8 of the preparation vessel 1, which is rotatably mounted on an outer wall of the pot 11; on the other hand, the functional element 17 has a mechanical operative connection to a likewise annular lid locking element 24, which is rotatably mounted on the pot 11 in the circumferential direction of a pot opening 12. When the locking ring 8 rotates, the functional element 17 simultaneously pivots about the pivot axis 28, whereby the lid locking element 24 rotates along the circumference of the pot opening 12.During the rotation of the lid locking element 24, a slide 37 of the lid locking element 24 engages a corresponding counter-contour 35 of the lid 13 and rotates it relative to the pot 11. Due to the rotation of the lid 13, a bayonet connection is created between the locking projections 34 of the pot 11 and the locking contours 18 of the lid 13. The lid 13 is then securely locked to the pot 11. This can be seen from the outside in . Fig. 15shown. The actuating device 7 of the food processor 4 thus serves, on the one hand, to drive the locking device 5 and, on the other hand, to actuate the lid locking device 14. The rotational movement of the locking ring 8 is converted into a rotational movement of the lid locking element 24 by means of the pivotable functional element 17. It is particularly advantageous if the functional element 17 is integrated into the wall 20 of the pot 11 or into the pot handle 21 in order to create a smooth surface of the preparation vessel 1 from the outside, which is easy to clean. In this sense, it is also particularly recommended if the functional element 17 is made of an elastic material and can adapt to the shape of the pot 11 during the pivoting movement.As a result, the functional element 17 can rest against the outer wall of the pot 11 in a shape-corresponding manner in any pivoting position, for example, preferably within a cavity in the wall 20 of the pot 11. The current rotational position of the lid 13—and thus also its locking state—can be detected by end stops that limit the range of movement of the lid 13 and thus also of the lid locking element 24. Whether the lid 13 has been correctly locked or not can also be checked by evaluating a rotation angle of the actuating element 29 of the actuating device 7 of the food processor 4.
[0035] The Figures 17 and 18 show alternative embodiments of a preparation vessel 1 with a lid locking device 14. The lid locking device 14 according to Fig. 17has a rotating shaft 16, which projects from a locking ring 8, which is arranged on a pot base 9 of the preparation vessel 1, to a pot opening 12 of the pot 11. In the area of the pot opening 12, the rotating shaft 16 has a toothed element 36, which interacts with a toothing of a lid locking element 24. Upon rotation of the locking ring 8, a rotation of the rotating shaft 16 occurs and thus a transmission of the rotational movement to the lid locking element 24, which, for example, as previously described with reference to the Figures 12 to 16 explains a lid 13 rotates relative to the pot 11 of the preparation vessel 1.
[0036] The Fig. 18shows an alternative embodiment in which the rotational movement of a locking ring 8 is transmitted to a cover locking element 24 via several, here, for example, four, transmission elements 30. The transmission elements 30 can be gears, for example, with adjacent gears rotating in opposite directions. List of reference symbols
[0037] 1 Preparation vessel 28 Swivel axis 2 Recording area 29 Actuating element 3 Base unit 30 transmission element 4 food processor 31 electric motor 5 Locking device 32 Passage opening 6 Contact element 33 Housing opening 7 Actuating device 34 Locking projection 8 locking ring 35 Counter contour 9 Pot base 36 Gearing element 10 projection 37 slider 11 Pot 12 Pot opening 13 Lid 14 Lid locking device 15 Counter element 16 rotating shaft 17 functional element 18 Locking contour 19 Lid opening 20 wall 21 pot handle 22 Display 23 Switch 24 Lid locking element 25 Fastening element 26 Nut 27 ring
Claims
1. Preparation vessel (1) for connection to a receiving area (2) of a base unit (3) of an electric motor-operated food processor (4), wherein the preparation vessel (1) comprises a pot (11), a lid (13) closing a pot opening (12) of the pot (11) and a locking device (5) for locking the preparation vessel (1) to the base unit (3) of the food processor (4), wherein the locking device (5) further comprises a displaceable contact element (6) which is arranged on the preparation vessel (1), characterized in thatthe contact element (6) is arranged on the preparation vessel (1) in such a way that, when the preparation vessel (1) is properly connected to the base unit (3), it can be actuated by a corresponding actuating device (7) of the receiving area (2) of the food processor (4) in order to effect locking of the preparation vessel (1) by means of the locking device (5), wherein the preparation vessel (1) further comprises a lid locking device (14) for locking the pot (11) to the lid (13), and the lid locking device (14) has a mechanical operative connection to the locking device (5) in such a way that actuation of the locking device (5) effects actuation of the lid locking device (14).
2. Preparation vessel (1) according to claim 1, characterized in thatthe locking device (5) has a locking ring (8) which has the contact element (6) and is mounted on the preparation vessel (1) so as to be rotatable in the circumferential direction of the preparation vessel (1), wherein the locking ring (8) is arranged in particular on the underside of the preparation vessel (1) with respect to a usual position of use of the preparation vessel (1).
3. Preparation vessel (1) according to claim 2, characterized in that the locking ring (8) has at least one projection (10) which is suitable for engaging behind a corresponding counter-element (15) of the base unit (3) of the food processor (4) in order to lock the preparation vessel (1) to the base unit (3).
4. Preparation vessel (1) according to claim 2 or 3, characterized in that the contact element (6) is a toothing of the locking ring (8).
5. Preparation vessel (1) according to one of claims 2 to 4, characterized in thatthe lid locking device (14) has a functional element (17) which is pivotally connected to the locking ring (8) of the locking device (5) and which is guided from the locking ring (8) to the pot opening (12), or that the lid locking device (14) has a rotary shaft (16) which is driven by the locking ring (8) and is guided from the locking ring (8) to the pot opening (12).
6. Preparation vessel (1) according to one of the preceding claims, characterized in that the lid locking device (14) has a lid locking element (24) which is designed to engage behind a partial region (18) of the lid (13) and / or to displace the lid (13) relative to the pot (11), and thereby to effect a locking of the pot (11) with the lid (13).
7. Preparation vessel (1) according to claim 5 or 6, characterized in thatthe functional element (17) or the rotary shaft (16) is rod-shaped with a predominantly longitudinal extension, wherein the functional element (17) or the rotary shaft (16) is guided in particular through a wall (20) of the pot (11) and / or a pot handle (21) of the pot (11).
8. Electric motor-driven kitchen appliance (4), in particular a mixer, with a base unit (3) and a preparation vessel (1) connectable to a receiving area (2) of the base unit (3), characterized in that the preparation vessel (1) is designed according to one of the preceding claims, and in that the base unit (3) has an actuating device (7) which is designed to actuate the locking device (5) of the preparation vessel (1) in a connected state of the base unit (3) and preparation vessel (1) via the contact element (6) of the locking device (5).
9. An electric motor-operated kitchen appliance (4), in particular a mixer, comprising a base unit (3) and a preparation vessel (1) with a pot (11) that can be connected to a receiving area (2) of the base unit (3), wherein the receiving area (2) has a locking device (5) for locking the preparation vessel (1) to the base unit (3) of the kitchen appliance (4), and the preparation vessel (1) has a lid locking device (14) that additionally locks a lid (13) onto the pot (11) of the preparation vessel (1), characterized in thatthe locking device (5) has a locking ring (8) which is mounted on the base unit (3) so as to be rotatable in the circumferential direction of the preparation vessel (1) connected to the receiving area (2), such that the locking ring (8) locks the base unit (3) to the preparation vessel (1) when rotated, and such that the locking ring (8) has a projection which engages behind a corresponding counter-element of the preparation vessel (1) in order to thus lock the preparation vessel (1) to the base unit (3), wherein the locking ring (8) of the base unit (3) then acts not only to lock the preparation vessel (1) to the base unit (3), but also to actuate the lid locking device.