DOMESTIC REFRIGERATION DEVICE HAVING A CONTROL ELEMENT DESIGNED WITH AN INTEGRATED DISPLAY UNIT FOR ACTUATING A COVER OF A FOOD STORAGE CONTAINER

Abstract

A domestic refrigeration device has an internal space for receiving foodstuffs, which is bounded by walls of an internal container, and a storage container for foodstuffs that is arranged in the internal space and can be closed with a lid. The refrigerator further has a mounting device with which the lid is mounted in the internal space such that it can be raised and lowered for opening and closing the food storage container. A control element is provided by which the lid can be actuated, wherein the control element for actuating the lid can be actuated along an actuation path and the lid can be positioned, in dependence on a position of the control element, in a first closed position and at least in a second fully open position. The control element itself has a display unit for displaying symbolic information depending on the position of the lid.

Claims

1-17. (canceled)

18. A domestic refrigeration appliance, comprising: an internal container having walls defining an internal compartment for holding food and said internal compartment being bounded by said walls; a lid; a food storage container for the food, being disposed in said internal compartment and can be closed by said lid; a mounting device mounting said lid in said internal compartment such that said lid can be raised and lowered to open and close said food storage container; and an operating element for actuating said lid, wherein it is possible for said operating element to be actuated on an actuation path to actuate said lid and for said lid to be positioned in a first closed position and at least in a second completely open position in dependence on a position of said operating element, said operating element having a display unit to display symbolic information in dependence on a position of said lid.

19. The domestic refrigeration appliance according to claim 18, wherein said display unit is a non-electronic display unit.

20. The domestic refrigeration appliance according to claim 18, wherein said display unit has an information disk with information elements configured in a fixed position and permanently thereon.

21. The domestic refrigeration appliance according to claim 20, wherein the information element is configured as a printing.

22. The domestic refrigeration appliance according to claim 20, further comprising an operating element support, said information disk is disposed in said operating element and is fastened in a fixed position on said operating element support, on which said operating element is disposed such that said operating element can be moved relative to said operating element support.

23. The domestic refrigeration appliance according to claim 22, wherein said information disk is disposed in a latched manner on said operating element support.

24. The domestic refrigeration appliance according to the claim 22, wherein said display unit has a cover plate disposed in said operating element and covering said information disk from above.

25. The domestic refrigeration appliance according to claim 24, wherein said cover plate is disposed on said operating element in a fixed position in such a manner that said cover plate can be moved relative to said information disk, namely by means of a non-destructively releasable connection.

26. The domestic refrigeration appliance according to claim 24, wherein said cover plate has at least one viewing window, through which the information element configured on an upper face of said information disk facing said cover plate can be identified in dependence on the position of said operating element and therefore a position of said cover plate relative to said information disk.

27. The domestic refrigeration appliance according to claim 26, wherein said cover plate is configured from an at least translucent material and has a lower face facing said information disk, apart from said viewing window, being formed from an opaque material.

28. The domestic refrigeration appliance according to claim 24, wherein said operating element has a mushroom-shaped display unit support for said display unit, wherein said mushroom-shaped display unit support is disposed on said operating element support so that said mushroom-shaped display unit support can be moved relative thereto, wherein said information disk and said cover plate of said display unit are disposed in a mushroom-shaped head of said mushroom-shaped display unit support.

29. The domestic refrigeration appliance according to claim 28, wherein said operating element has a terminating ring, said terminating ring is connected in a rotationally fixed manner to said mushroom-shaped display unit support and which encloses said mushroom-shaped head and said cover plate peripherally.

30. The domestic refrigeration appliance according to claim 29, wherein said terminating ring has a cone-shaped upper face.

31. The domestic refrigeration appliance according to claim 28, wherein: said operating element support has an opening formed therein; said operating element has a coupling device; and said mushroom-shaped display unit support has a stem that extends through said opening in said operating element support and is connected to said coupling device to move said lid.

32. The domestic refrigeration appliance according to claim 22, wherein said operating element support has a surface region which is oriented obliquely upward, on which information about a moisture content in said food storage container in dependence on the position of said lid is displayed in a fixed position and information elements relating to food to be preferably stored in said food storage container with a respective lid position are configured on said display unit of said operating element.

33. The domestic refrigeration appliance according to claim 22, wherein: said operating element having an operating element socket; and said operating element has a terminating ring and said information disk is connected to said terminating ring in a rotationally fixed manner and accommodated in said operating element socket configured as a display unit support and disposed in a fixed position in said operating element support.

34. The domestic refrigeration appliance according to claim 20, further comprising an operating element support; wherein said operating element having an operating element socket; and wherein said display unit has a cover plate covering said information disk and said cover plate is connected in a rotationally fixed manner to said operating element socket configured as a display unit support and disposed in a fixed position in said operating element support.

Description

[0032] Exemplary embodiments of the invention are described in more detail below with reference to schematic drawings, in which:

[0033] FIG. 1 shows a perspective view of an exemplary embodiment of an inventive domestic refrigeration appliance;

[0034] FIG. 2 shows a perspective view of a partial detail of the domestic refrigeration appliance in a front region of a separating wall above a lid of a food storage container;

[0035] FIG. 3 shows a perspective view of the components in FIG. 2 with separate operating element;

[0036] FIG. 4 shows an exploded view of an exemplary embodiment of an operating element with a display unit;

[0037] FIG. 5 shows a sectional view of the operating element according to FIG. 4 in the assembled state;

[0038] FIG. 6 shows a sectional view of the operating element according to FIG. 4 in the assembled state;

[0039] FIG. 7 shows a perspective view of subcomponents of the operating element according to FIG. 4;

[0040] FIG. 8 shows an enlarged partial view of the components in FIG. 7 in the assembled state;

[0041] FIG. 9 shows a perspective view of the operating element with the terminating ring removed therefrom;

[0042] FIG. 10 shows a further enlarged view of the operating element according to FIG. 9 with the terminating ring already positioned on but not yet arranged in the end position;

[0043] FIG. 11 shows a detailed view according to FIG. 10 with the terminating ring shown in the end position;

[0044] FIG. 12 shows a perspective sectional view of a sub-region of the assembled operating element with the display unit;

[0045] FIG. 13 shows a perspective sectional view of a sub-region of the assembled operating element with the display unit;

[0046] FIG. 14 shows a perspective section of the view in FIG. 2 in the region of the operating element;

[0047] FIG. 15 shows a further perspective sectional view of the operating element in the coupled state with an element of a coupling device;

[0048] FIG. 16 shows a plan view of sub-elements of the coupling device with a position, in which the lid is arranged in a first end position;

[0049] FIG. 17 shows a plan view according to FIG. 16, in which the lid is arranged in an intermediate position;

[0050] FIG. 18 shows a plan view according to FIG. 16 and FIG. 17, in which the lid is arranged in a further end position;

[0051] FIG. 19 shows a further section of the view in FIG. 2; and

[0052] FIG. 20 shows a further perspective sectional view of a further exemplary embodiment of an operating element with a display unit and an operating element support, in which the components are shown in an exploded view.

[0053] Identical elements or those of identical function are shown with identical reference characters in the figures.

[0054] FIG. 1 shows an exemplary view of a domestic refrigeration appliance 1, which is configured as a combined refrigerator/freezer appliance. The domestic refrigeration appliance 1 comprises a carcass 2 with an internal container 3. The walls of the internal container 3 bound a first internal compartment, which is a chiller compartment 4, and a separate second internal compartment arranged below, which is a freezer compartment 5. The chiller compartment 4 generally serves to chill chilled goods in a frost-free manner, preferably at temperatures between +4° C. and +8° C. The chiller compartment 4 can however also be configured as a zero degree compartment, in particular for storing fruit or vegetables. The chiller compartment 4 can be accessed when the door 6, which closes the compartment 4 at the front, is open.

[0055] The freezer compartment 5 generally serves to deep-freeze frozen goods, at −18° C. for example. The freezer compartment 5 is accessible when the freezer compartment door 7 is open.

[0056] Mounted in a removable manner in the chiller compartment 4 is a chilled goods or food storage container 8, which can be closed by means of a lid 9 mounted above the food storage compartment 8. An additional cover 10, for example in the form of a glass compartment base, can be arranged above the lid 9, as shown.

[0057] The internal container 3 has two opposing vertical side walls 3a and 3b.

[0058] Provision is preferably made for a separating wall 11 to be arranged between the lid 9 and the cover 10. This separates the food storage container 8 from the remaining sub-volume of the internal compartment or chiller compartment 4.

[0059] The lid 9 is mounted in the chiller compartment 4 by means of a mounting device 12 in such a manner that it can be raised and lowered to open and close the food storage container 8. In particular the mounting device 12 comprises an operating element 13, which can be used to actuate the lid 9. To actuate the lid 9, the operating element 13 can be rotated about an axis on an actuation path and can be latched at least in one rotation position along the actuation path.

[0060] The operating element 13 is arranged on the separating wall 11.

[0061] The separating wall 11, which is arranged above the lid 9 in the vertical direction and therefore in the y direction, is configured in such a manner in the illustrated exemplary embodiment that it also serves as a support plate for the lid 9. In this exemplary embodiment the lid 9 is therefore mounted solely on said separating wall 11 and can be displaced relative to said separating wall 11 in order then to be raised or lowered in relation to a tray or drawer 15 of the food storage container 8, in order to be able to set the opened or closed state of the food storage container 8.

[0062] The food storage container 8 comprises the lid 9 and the drawer 15.

[0063] The horizontal separating plate or the separating wall 11, as shown in FIG. 2, comprises an operating element support 11a, which has for example a base body or a base part 14 and a separate plate-type element in the form of a facing 20, which can be attached to the base part 14 in a non-destructively releasable manner. However the facing 20 may also not be present. The operating element support 11a also has a horizontally oriented platform 16 on the base part 14a, the operating element 13 resting or being arranged thereon.

[0064] The base part 14 comprises a front edge 17 and a surface region 18, which is offset to the rear in the depthwise direction (z direction) in relation to the front edge 17 and oriented obliquely upward and to the rear. This forms an oblique step. This angled surface region 18 is configured practically in the manner of a strip and extends in particular over the entire width of the base part 14 and is configured on an upper face 19 facing away from the lid 9. The facing 20 is arranged in an embedded manner in said base part 14 so that an upper face 21 of the facing 20 is arranged flush with an upper face 22, which represents a sub-region of the upper face 19. The facing 20 is therefore arranged flush in the base part 14 in the region of the platform 16, which is offset downward in the vertical direction at the front.

[0065] A front face 23 of the facing 20 forms a piece of the front edge 17.

[0066] A display region 24 is also configured on the base part 14 in the surface region 18, in particular in the facing 20, allowing a symbolic or approximate representation of a display of a moisture content in the food storage container 8 to be displayed. To this end in this exemplary embodiment elements are configured on the region of the facing 20 which is oriented obliquely upward and to the rear through the surface region 18. In the exemplary embodiment three different elements or objects 25, 26 and 27 are shown, which are associated with three different specific positions of the lid 9 relative to the drawer 15. These also symbolically characterize moisture contents in the food storage container 8 specifying respective lid positions and associated therewith. The objects 25 to 27 can be printed on.

[0067] Also shown is the operating element 13, which is positioned between the front edge 17 and the surface region 18 when viewed in the depthwise direction and is therefore accessible from above. Actuation of the operating element 13 causes the lid 9 to be moved by way of an in particular solely mechanical interaction and coupling. The lid 9 can also be mounted on the mounting device 12, which is configured solely on the walls 3a and 3b. Its position can be changed for this purpose in a raising and pushing movement. To this end corresponding mounting elements of the mounting device 12 can be arranged so that they are oriented obliquely to the rear and upward on the walls 3a and 3b.

[0068] When the lid 9 is moved relative to the drawer 15, the moisture content in the food storage container 8 also changes. An observer can then identify the information about the symbolically displayed moisture content intuitively and in an immediately comprehensible manner.

[0069] In one configuration a specific position of the lid 9 is associated with a rotation position of the operating element 13 about the axis A, which extends in the vertical direction and therefore in the y direction.

[0070] As also shown in FIG. 2, the operating element 13 itself also comprises a display unit 28. The display unit 28 is configured to display symbolic information as a function of the position of the lid 9. The display unit 28 is a non-electronic display unit. Non-modifiable information elements that are applied in a fixed position and permanent manner are preferably present for this information display. Said information elements are in particular configured as printing.

[0071] Provision can also be made, irrespective of the embodiment described above in FIG. 2, for the objects 25 to 27 not to be present and for only the display unit 28 to be configured on or in the operating element 13.

[0072] The information elements of the display unit 28 can comprise symbols and/or letters. They can symbolize the moisture content in the food storage container 8, particularly when the objects 25 to 27 are not present. However they can also or instead symbolize foods which can be preferably and most appropriately stored in the food storage container 8 in the respective states associated with the different positions of the lid 9.

[0073] In particular when the objects 25 to 27 are present and symbolize the moisture content, information elements on the display unit 28 can preferably be information elements which represent food that can preferably be stored in the food storage container 8 and therefore also in the drawer 15 with the lid 9 in the respective position.

[0074] FIG. 3 shows a further perspective view of an exemplary embodiment, in which the facing 20 is not present in contrast to the diagram in FIG. 2. The operating element 13 is also shown separate from the separating wall 11 and in particular the base part 14. The objects 25 to 27 are not configured in this embodiment either. As shown in FIG. 3, the operating element support 11a has a continuous hole 29 in its platform 16, extending through the operating element 13.

[0075] FIG. 4 shows an exploded view of an exemplary embodiment of the operating element 13. It comprises a display unit support 30, which is mushroom-shaped. This display unit support 30 comprises a stem 31 and a mushroom-shaped head 32. The plate-like mushroom-shaped head 32 has a depression 33 which comprises a base 34 and a peripheral web 35 or is formed and bounded by such. Configured in the base 34 are cutouts 36 and 37 running in an arc.

[0076] This arc-shaped cutouts 36 and 37 are also guide slots, through which components of the display unit 28 extend, thereby allowing relative movement between an element of the display unit 28 and the operating element 13.

[0077] In the exemplary embodiment the display unit 28 comprises an information disk 38 which has a number of information elements (not shown in detail) on an upper face 39. Preferably as many information elements as there are possible positions of the lid 9 are applied, in particular printed, in a fixed position and non-modifiably on the upper face 39.

[0078] The display unit 28 also comprises a cover plate 40, which can preferably be made of an at least translucent material, for example glass or plastic. The cover plate 40 is provided, in particular printed, with an opaque material on a lower face 41 facing the information disk 38, with at least one viewing window 42 being cut out, through which it is then always possible to see.

[0079] The operating element 13 also comprises a separate terminating ring 43, which is connected to the display unit support 30 in a rotationally fixed manner in the assembled state and completely encloses both the information disk 38 and the cover plate 40 in a peripheral manner about the axis A. A ring upper face 44 of the terminating ring 43 can extend horizontally in a plane or be configured as flat but be configured at an angle to the axis A.

[0080] FIG. 4 also shows a coupling element 45 of a coupling device. The operating element 13 is coupled to the lid 9 by way of this coupling device and therefore also the coupling element 45 and the movement of the lid 9 is then also brought about by way of said coupling device as a function of the rotation position of the operating element 13, the respectively desired position of the lid 9 being thereby set.

[0081] The coupling element 45 comprises a chimney-like shaft 46, which is connected to the stem 31, in particular by a non-destructively releasable connection, in particular by a latching connection, when connected to the operating element 13. To this end a latching cutout 47 is formed in the stem 31, in which a latching element 48 engages in the connected state.

[0082] The coupling element 45 also comprises a slotted disk 49, in which a guide slot 50 is configured. An eccentric pin 51 is also arranged on a lower face of the slotted disk 49.

[0083] FIG. 5 shows a sectional view of the operating element 13 with the display unit 25, only showing the display unit support 30 and the information disk 38 and in the as yet unassembled end state. It can be seen that latching elements 52 and 53 arranged on the lower face of the information disk 38 facing away from the cover plate 40 engage through the cutouts 36 and 37. In the assembled end state the information disk 38 rests in particular on the base 34.

[0084] Provision is also preferably made for a gap al to be different from a gap a2, thereby establishing a certain assembly coding.

[0085] FIG. 6 shows an enlargement of a partial detail of the view in FIG. 5, with the information disk 38 already arranged in its end position in the depression 33 here. It can be seen that the web 35 has a lip 54, which rests on a recess 55 of the information disk 38, configuring a sort of snapping or latching here too, so that the information disk 38 is held in the axial direction. It should however be noted that there is relative movement between the display unit support 30 and the information disk 38 in the peripheral direction about the axis A when the operating element 13 is in the assembled end state with the display unit 28.

[0086] FIG. 7 shows a perspective view of the display unit support 30 with the information disk 38 already assembled in the end position. The cover plate 40 is however not yet shown in its assembled end position.

[0087] As shown in FIG. 7, the cover plate 40 has cutouts 56 and 57, which are configured as open in a radially outward direction and therefore represent notches or indentations. These are configured in a flange-like peripheral web 58 of the cover plate 40. It can also be seen from FIG. 7 that elevations 60 and 61 are configured on an upper edge 59 of the web 35.

[0088] These are configured for coupling with the web 58 and also the cutouts 56 and 57, to generate a rotationally fixed coupling between the cover plate 40 and the display unit support 30. This is shown in the enlargement in FIG. 8. This shows a partial detail of the components in FIG. 7, with the cover plate 40 shown already in the assembled end state here. It can be seen that the web 58 engages over an upper face 62 of the elevation 61, the position of the cover plate 40 being fixed in the peripheral direction about the axis A in relation to the display unit support 30 by means of stops 63. The same is also brought about in respect of the mechanical coupling with the elevation 16 and the cutout 56. The elevations 60 and 61 are preferably of different lengths in the peripheral direction about the axis A and the stops 63 are preferably configured correspondingly so that the elevations 60 and 61 can be inserted with a close fit in the axial direction in these openings, which are bounded by the stops. The different lengths of the elevations 60 and 61 in the peripheral direction of the axis A in turn allow an assembly coding to be established for the cover plate 40.

[0089] FIG. 9 shows a further exploded view of the operating element 13 with the display unit 28, the terminating ring 43 described above still being removed here.

[0090] The terminating ring 43 is positioned on the mushroom-shaped head 32 from above to move it into the assembled end position. Depressions 64 are configured on an inner face 65 of the terminating ring 43 for precise centering in the peripheral direction about the axis A. Corresponding engagement elements 67, which project radially outward, are also configured on an outer face 66 of the web 35.

[0091] As shown in an enlargement in FIG. 10, when the terminating ring 43 is positioned on the mushroom-shaped head 32, the terminating ring 43 is rotated about the axis A relative to the mushroom-shaped head 32 until the engagement elements 37 enter the cutouts 64, as shown in FIG. 11.

[0092] As well as the abovementioned centering between the terminating ring 43 and the display unit support 30 about the peripheral axis A, there is also axial position fixing between said components. To this end at least one latching receiver 68, preferably a number of such latching receivers 68, is/are in turn configured on the inner wall or inner face 65. In the same way a number of latching elements 69 are preferably configured on the outer face 66 of the web 35.

[0093] As shown in the assembled end state between the terminating ring 43 and the display unit support 30 in FIG. 12, the latching elements 69 then engage in said latching receivers 68.

[0094] As also shown in FIG. 12, a radial flange 70 of the terminating ring 43 with the upper face 44 overlaps the cover plate 40 in the radial direction, in particular in the region of the web 58 there. As already shown in FIGS. 7 to 9, said web 58 is offset in a staged manner downward in the axial direction in relation to the further surface of the cover plate 40, thereby forming a corresponding bearing platform, on which said radial flange 70 then rests from above, as shown in FIG. 12 and FIG. 13. The corresponding mechanical coupling and latching connection between the terminating ring 43 and the display unit support 30 mean that the position of the cover plate 40 is also fixed axially.

[0095] FIG. 13 shows the sectional view corresponding to FIG. 12.

[0096] FIG. 14 shows a perspective sectional view of the assembled end state of the operating element 13 in the operating element support 11a, a sectional view along the section line XIV-XIV from FIG. 2 being shown here.

[0097] FIG. 15 shows a perspective sectional view of the operating element 13 with the display unit 28 in the coupled end state with the coupling element 45.

[0098] FIG. 16 shows a view from below of the coupling element 45 and therefore the face of the slotted disk 49 facing away from the operating element 13. The curved guide slot 50 is clearly visible. A guide block 71 engages therein. It can be seen that in the exemplary embodiment three notches 72, 73 and 74 are configured on the radially outer boundary edge of the guide slot 50. These represent lockable positions of the lid 9, which are then correspondingly maintained. The guide block 71 snaps into said notches 72 to 74 as it moves about the axis A, and the respectively reached position of the lid 9 is thereby maintained. The two notches 72 and 74 then represent a closed and open end position of the lid 9, while an intermediate position of the lid 9 is maintained by the notch 73.

[0099] The eccentric element 51 is also visible here. According to the perspective sectional view in FIG. 19, which shows a sectional view along the section line XIX-XIX from FIG. 2, this engages in an engagement region 75 in the lid 9. The eccentric arrangement in relation to the axis A means that a rotation movement of the operating element 13 about the axis A causes the lid 9 to perform a certain movement, sliding along the guide paths due to the action of said force, so that the lid 9 is raised from the drawer 15 due to the orientation of the guide paths and reaches the intermediate position or the completely open position or on the other hand rests on the drawer 15, so that the closed position of the lid 9 is reached.

[0100] The intermediate position is reached in FIG. 17, as the guide block 71 is held in the notch 73. In the same way, the second end position is shown in FIG. 18, as the guide block 71 is arranged in the notch 72 and has reached the other end of the guide slot 50. A distance d shown between FIGS. 16 to 18 also shows the displacement movement of the eccentric element 51, it being possible for d to be 18 mm for example.

[0101] FIG. 20 shows a perspective sectional view in the manner of an exploded diagram of a further exemplary embodiment. In contrast to the diagram of the previous exemplary embodiment, provision is made here for the cover plate 40 to have a centrally arranged pin 76, which engages here through a hole 77 in the information disk 38. In this embodiment provision is made for an operating element socket 77 of the operating element 13 to be arranged on the base part 14. It is arranged so that it is sunk into an opening 78 here. In contrast in this exemplary embodiment the information disk 38 is coupled in a rotationally fixed manner to the terminating ring 43 and can be rotated in the peripheral direction about the axis A relative to the operating element socket 77. As the cover plate 40 is in turn coupled in a rotationally fixed manner to the operating element socket 77, there is also relative movement about the axis A between the terminating ring 40 and the information disk 38 in relation to the cover plate 40. The cover plate 40 can have one viewing window 42 or a number of viewing windows 42. The linear viewing windows 42 can in turn be configured in such a manner in the peripheral direction of the axis A that they appear at different segments in the peripheral direction about the axis A as a function of the rotation position of the operating element 13 in assigned positions of the lid 9 or information elements on the upper face 39 can be identified transparently through said narrow linear viewing windows 42 and run adjacent to optical connecting lines to the objects 25 and 27 applied to the face 22, as described in the example in FIG. 2. Respectively assigned symbols and/or letters in the radially wider viewing windows 42, as shown in FIG. 20, can then indicate the food which can preferably be stored in the drawer 8 when the lid 9 is in this position.

[0102] The information disk 38 can for example be mounted with the terminating ring 43 by way of a catch 79, in particular a radial catch, in the operating element socket 77, allowing it to be rotated relative thereto in the peripheral direction about the axis A.

[0103] In the assembled state an upper face of a peripheral web 80 of the operating element socket 77 is preferably arranged flush with the face 22. The terminating ring 43 preferably rests on the web 80.

LIST OF REFERENCE CHARACTERS

[0104] 1 Domestic refrigeration appliance [0105] 2 Carcass [0106] 3 Internal container [0107] 3a Vertical side wall [0108] 3b Vertical side wall [0109] 4 Chiller compartment [0110] 5 Freezer compartment [0111] 6 Door [0112] 7 Freezer compartment door [0113] 8 Food storage container [0114] 9 Lid [0115] 10 Cover [0116] 11 Separating wall [0117] 11a Operating element support [0118] 12 Mounting device [0119] 13 Operating element [0120] 14 Base part [0121] 15 Drawer [0122] 16 Platform [0123] 17 Front edge [0124] 18 Surface region [0125] 19 Upper face [0126] 20 Facing [0127] 21 Upper face [0128] 22 Upper face [0129] 23 Front face [0130] 24 Display region [0131] 25 Object [0132] 26 Object [0133] 27 Object [0134] 28 Display unit [0135] 29 Hole [0136] 30 Display unit support [0137] 31 Stem [0138] 32 Mushroom-shaped head [0139] 33 Depression [0140] 34 Base [0141] 35 Web [0142] 36 Cutout [0143] 37 Cutout [0144] 38 Information disk [0145] 39 Upper face [0146] 40 Cover plate [0147] 41 Lower face [0148] 42 Viewing window [0149] 43 Terminating ring [0150] 44 Ring upper face [0151] 45 Coupling element [0152] 46 Shaft [0153] 47 Latching cutout [0154] 48 Latching element [0155] 49 Slotted disk [0156] 50 Guide slot [0157] 51 Eccentric pin [0158] 52 Latching element [0159] 53 Latching element [0160] 54 Lip [0161] 55 Recess [0162] 56 Cutout [0163] 57 Cutout [0164] 58 Peripheral web [0165] 59 Upper edge [0166] 60 Elevation [0167] 61 Elevation [0168] 62 Upper face [0169] 63 Stops [0170] 64 Depressions [0171] 65 Inner face [0172] 66 Outer face [0173] 67 Engagement elements [0174] 68 Latching receiver [0175] 69 Latching elements [0176] 70 Radial flange [0177] 71 Guide block [0178] 72 Notch [0179] 73 Notch [0180] 74 Notch [0181] 75 Engagement region [0182] 76 Pin [0183] 77 Operating element socket [0184] 78 Opening [0185] 79 Catch [0186] 80 Peripheral webs [0187] D Distance [0188] A Axis [0189] a1 Gap [0190] a2 Gap