A control knob arrangement and a gas stove

Abstract

A control knob arrangement (3) for a household appliance (1), the control knob arrangement (3) comprising: a base part (8) configured to couple to a rotatable valve shaft (26) in a torque-proof manner; a handling part (7) for exercising a torque on the base part (8); and a spring device (17) for generating a spring force (F); wherein: the handling part (7) comprises a cavity (10) for receiving at least partially the base part (8), wherein the spring device (17) is arranged such that the spring force (F) acts between the cavity (10) and the handling part (7) in radial direction.

Description

[0001] 202401329

[0002] A control knob arrangement and a gas stove

[0003] The present invention relates to a control knob arrangement and a gas stove.

[0004] Control knobs for household appliances, such as a gas stove, may be manually rotated by an operator. The control knob may be connected to a shaft of the household appliance to transfer a torque to the shaft. For example, the shaft is connected to a gas valve of the gas stove, wherein a rotation of the control knob controls the gas supply to a cooking hob of the gas stove. The control knob may modify, by rotation, the amount of gas supplied to the cooking hob, thus modifying a flame size.

[0005] Known control knobs comprise a base part coupled to the shaft and a handling part coupled to the base part. It is desirable to provide for a reliable yet detachable coupling of the parts.

[0006] WO 2023 / 180220 A1 discloses a control element for a cooktop. The control element comprises a handling section, a base section for covering at least part of an opening in a plate, and a first coupling section attached to the base section. The first coupling section protrudes from the base section and includes at least one recess for receiving a corresponding protrusion and / or at least one protrusion for engaging with a corresponding recess. The coupling section further comprises at least one magnetic element for generating a magnetic pull.

[0007] It is one object of the present invention to provide an improved control knob mechanism.

[0008] Accordingly, as a first aspect, a control knob arrangement for a household appliance is provided. The control knob arrangement comprises a base part configured to couple to a rotatable valve shaft in a torque-proof manner, a handling part for exercising a torque on the base part, and a spring device for generating a spring force. The handling part comprises a cavity for receiving at least partially the base part, wherein the spring device is arranged such that the spring force acts between the cavity and the handling part in radial direction. 202401329

[0009] According to a further aspect, a control knob arrangement for a household appliance is provided. The control knob arrangement comprises a base part configured to couple to a rotatable valve shaft in a torque-proof manner, and a handling part for exercising a torque on the base part. The handling part comprises a cavity, and the base part comprises a spring device for generating a spring force, wherein the spring force acts against a first surface within the cavity of the handling part.

[0010] Advantageously, with this arrangement, standard parts are used. Therefore, the control knob arrangement may be manufactured at a reduced cost.

[0011] One may appreciate that due to the radially exercised force the base part and the handling part, that may form-fit in an axial direction, are attached to one another. The parts can be detached from one another by overcoming a force dependent on the radial force. In embodiments, the base part and the handling part are configured to be separated from each other in an axial direction.

[0012] In embodiments, the base part and the handling part are attached to one another along a mutual contour or contact surface. The contour or contact surface is, in particular, designed such that a rotation of the parts relative to one another about the valve shaft is blocked. One may contemplate a form fit or of an engaging or interlocking radial opening and protrusion in or at a mutual circumferential contour or contact surface of the base part and / or the handling part.

[0013] The household appliance is, for example, a stove, in particular, a gas stove, a cooktop, an oven, or a microwave oven.

[0014] The base part may be implemented to exercise a torque on a shaft, such as the rotatable valve shaft, which may be arranged rotatable about a rotational axis. The rotational axis may extend, in particular, along a center axis of the shaft. Thus, the rotational axis may define a radial and an axial direction, wherein the axial direction extends parallel or in the direction of the rotational axis, and the radial direction extends perpendicular or normal to the rotational axis. 202401329

[0015] Coupling in a “torque-proof manner” may, in particular, include a coupling for transferring a torque onto another component. Therefore, two components, for example, the control knob and the rotatable valve control shaft, may form a form-fit connection together.

[0016] Wordings like “perpendicular” and “parallel”, which are used herein to define spatial directions and / or geometrical arrangements, may include deviations of up to 5 degrees compared to an ideal arrangement, in other examples, “perpendicular” and “parallel” include deviations of up to 10 degrees from an ideal arrangement. Deviations may occur from tolerances during manufacturing or the assembly of components. An “ideal arrangement” of the spatial directions may have a deviation of zero degrees, wherein, for example, two spatial directions may be arranged orthogonal to each other, meaning the spatial directions may include an angle of 90 degrees.

[0017] The handling part may be implemented to exercise a torque onto the base part. Therefore, the handling part may comprise a handling section. The handling section may, for example, be a protruding section of the handling part, which may be gripped by the operator or an outer surface of the handling part arranged in a circumferential manner.

[0018] For example, an operator of the gas stove may apply a torque by gripping and turning the handling section. Thus, the base part and the rotatable valve shaft are turned, wherein the rotatable valve shaft controls a gas valve and consequently the gas flow in the gas stove. Heat, for example, for cooking, provided by the gas stove by combusting gas, may be controlled by the amount of gas flowing through the gas valve. Alternatively, the control knob arrangement may be connected to a further component of the household appliance, such as a switch, an electrical contact, or to internal wiring.

[0019] The spring device may be a spring-loaded thrust piece. The spring device may comprise an envelope, wherein the envelope has a cylindrical shape. The handling part and / or the base part may comprise a recess or a receptacle for accommodating the spring device. For example, the control knob arrangement may comprise a multitude of spring devices, wherein the multitude of spring devices act between the cavity and the handling part in the radial direction. Therefore, the multitude of spring devices may be accommodated by the handling part and / or the base part. 202401329

[0020] The cavity of the handling part may be implemented to at least partly accommodate the base part. For example, the cavity may accommodate a protrusion of the base part. In another example, the cavity may be a recess, shaped like a negative of the base part, to completely accommodate the base part. The cavity may comprise an inner lateral surface.

[0021] The handling part and the base part may comprise a contact area wherein the spring force acts within the contact area.

[0022] As previously mentioned, the cavity comprises an inner lateral surface, wherein the first surface may be part of the inner lateral surface. In particular, the first surface may be a surface arranged in around the rotational axis. Thus, the spring force may act perpendicularly onto the first surface. In particular, the spring force may act on the first surface in an assembled state of the base part and the handling part. “Assembled state” means, in particular, a state in which the base part is at least partly inserted into the cavity of the handling part and / or the handling part is arranged in a way that exercises the torque onto the base part.

[0023] According to an embodiment, the spring device is comprised of the base part.

[0024] The handling part may be designed as replaceable, for example, in the event of a loss or in the event of an upgrade of the handling part. Therefore, comprising the spring device with the base part makes replacing the handling part more cost-effective.

[0025] The spring device may be inserted in the recess or a receptacle of the base part. In particular, the spring device may be screwed or pressed in the recess. The recess may, for example, be a blind hole with a cylindrical shape. In particular, the recess may be arranged, at least partly, in the radial direction.

[0026] According to an embodiment, the spring force is radially outward-directed.

[0027] In particular, the spring force is at least directed radially outward and, in parts, in a circumferential direction. 202401329

[0028] According to an embodiment, the spring force acts against a first surface within the cavity of the handling part.

[0029] The first surface may, in particular, extend perpendicular to the direction of the spring force.

[0030] According to an embodiment, the spring device comprises a spring for generating the spring force and a transfer element, wherein the transfer element is implemented to act on the first surface.

[0031] Advantageously, the spring device is a standard part, which may reduce the cost of the control knob arrangement.

[0032] According to an embodiment, the first surface comprises a recess for accommodating the transfer element.

[0033] Advantageously, in addition to the spring force acting on the first surface, there is a formfit between the transfer element and the recess. Thus, the coupling between the handling part and the base part is strengthened.

[0034] The transfer element may at least be partially accommodated by the recess. The spring force may force the transfer element, at least partially, into the recess. The transfer element may be implemented to increase the contact area between the spring device and the previously mentioned contact area compared to the spring acting on the contact area.

[0035] According to an embodiment, the transfer element and the recess have a corresponding shape.

[0036] In particular, the shape of a cross-section of the transfer element and the recess may, at least at one location, correspond. The recess is, for example, a blind hole or has the shape of a hemisphere. 202401329

[0037] According to an embodiment, the transfer element is a sphere, e.g. a perl, a ball, or the like. The transfer element, in embodiments is formed of a material having that is harder than the material of the handling part and / or the base part.

[0038] Advantageously, the sphere may be rotatable. Therefore, the transfer element may reduce sliding friction between the handling part and the base part in events wherein the handling part is removed from the base part.

[0039] In embodiments, the handling part comprises a radial recess for receiving at least partially the transfer element in an assembled state of the control knob arrangement.

[0040] According to an embodiment, the cavity and the base part have a corresponding cylindrical shape.

[0041] For example, the outer cylindrical shape of the base part corresponds to the inner cylindrical shape of the cavity.

[0042] The cylindrical shape may have the cross-section of a circle, an ellipse, or a polygon.

[0043] According to an embodiment, the base part comprises a cutout with two surfaces, wherein a first surface out of the two surfaces is arranged normally to the direction of the spring force.

[0044] Advantageously, a break in symmetry is achieved by the cutout, which is suitable for transferring torque between the handling part and the base part.

[0045] The spring device may be accommodated by the first surface. The second surface may be located perpendicular to the first surface.

[0046] For example, the base part comprises multiple cutouts, wherein every cutout comprises a first surface. Multiple spring devices may be located on at least some of the first surfaces.

[0047] According to an embodiment, the first surface and the direction of the spring force are radially oppositely arranged. 202401329

[0048] Advantageously, the base part and the handling part are coupled by a frictional connection created by the spring force and the first surface.

[0049] In particular, the spring force acts as a radial retention force. The first surface is a contact surface extending in a tangential direction.

[0050] According to an embodiment, the base part and the handling part are solely coupled with frictional engagement.

[0051] Advantageously, permanent magnets for establishing a magnetic coupling between the base part and the handling part are not necessary, which may make the control knob arrangement more cost effective to manufacture.

[0052] According to an embodiment, the base part comprises a back coupling section for receiving an end of the rotatable valve shaft in a torque-proof manner, and a front coupling section for accommodating the spring device.

[0053] The back coupling section and the front coupling section may be arranged, respectively, on a back side and a front side of the base part, wherein the back side and the front side are at axially opposite ends of the base part.

[0054] The back side is, in particular, facing towards the gas stove. The front side is, in particular, facing towards a user of the gas stove. The front coupling section comprises, for example, the spring device.

[0055] The back coupling section may comprise an opening for receiving the end of the rotatable valve shaft. The opening may be of the cross-section of a semicircle or a polygon. The end of the rotatable valve shaft may have a shape corresponding to the shape of the opening of the coupling section. The end of the rotatable valve shaft may have a crosssection of a semicircle or a polygon.

[0056] According to an embodiment, the back coupling section axially protrudes from the base part. 202401329

[0057] For example, the back coupling section comprises a coupling means for coupling the end of the rotatable valve shaft. The coupling means may prevent the base part from loosening in the axial direction by achieving a form-fit and / or a frictional connection. The coupling means may be a leaf spring comprised of the coupling section.

[0058] According to a further aspect, a gas stove is provided. The gas stove comprises: a rotatable valve shaft for controlling a gas flow; a control panel having an opening, wherein a rotational axis extends through the opening; and a control knob arrangement according to one of embodiments mentioned above or below.

[0059] The embodiments and features described with reference to the first aspect or according to an embodiment thereof apply mutatis mutandis to the method of the further aspect.

[0060] Further possible implementations or alternative solutions of the invention also encompass combinations - that are not explicitly mentioned herein - of features described above or below with regard to the embodiments. The person skilled in the art may also add individual or isolated aspects and features to the most basic form of the invention.

[0061] Further embodiments, features, and advantages of the present invention will become apparent from the subsequent description and dependent claims, taken in conjunction with the accompanying drawings, in which:

[0062] Fig. 1 shows a perspective view of a section of an embodiment of a gas stove;

[0063] Fig. 2 shows a cross-sectional view of an embodiment of a handling part;

[0064] Fig. 3 shows a cross-sectional view of an embodiment of a base part;

[0065] Fig. 4 shows a cross-sectional view of an embodiment of a control knob arrangement; and

[0066] Fig. 5 shows a perspective view of a section of a control panel of a gas stove. 202401329

[0067] In the Figures, like reference numerals designate like or functionally equivalent elements unless otherwise indicated.

[0068] Fig. 1 shows a section of a household appliance, in particular, a gas stove 1. The gas stove 1 comprises a control panel 2 with control knob arrangements 3, wherein the control panel 2 may be oriented to a front side of the gas stove 1 . The gas stove 1 further comprises cooking hobs 4. The cooking hobs 4 may each have different sizes, wherein the cooking hobs 4 are located on a top plate 5, arranged on a top side of the gas stove 1.

[0069] The control knob arrangements 3 are implemented, in the case of the household appliance being the gas stove 1 , to control a gas supply of the gas stove 1 , which is not shown in Fig. 1. Therefore, the control knob arrangements 3 may be rotated relative to a rotational axis 6 (see Fig. 2). Rotating the control knob arrangements 3 may, depending on the rotational angle, set the gas supplied to the cooking hobs 4. Depending on the supplied gas, heat, for example, for cooking, is generated by a burner (not shown in Fig.

[0070] 1) of the cooking hob 4, corresponding to a rotation angle of the control knob arrangement 3.

[0071] Fig. 2 shows a cross-sectional view along the rotational axis 6 of an embodiment of a handling part 7. Fig. 3 shows a cross-sectional view along the rotational axis 6 of an embodiment of a base part 8. Fig. 4 shows a cross-sectional view along the rotational axis 6 of an embodiment of the control knob arrangement 3, wherein the control knob arrangement 3 comprises the handling part 7 and the base part 8. In the following, reference may be made to Fig. 2, Fig. 3, and Fig. 4.

[0072] The handling part 7 and / or the base part 8 may be manufactured from plastic using injection molding. In embodiments, the handling part 7 and / or the base part 8 may be manufactured from plastic using a 3D printer. In the embodiment shown, the handling part has an upper first component or part 15 and a lower second component or part 14, that are attached together and form the handling part 7.

[0073] The handling part 7, shown in Fig. 2, comprises a gripping surface 9, wherein the gripping surface 9 is arranged as an outer shell surface of the handling part 7. In particular, the handling part 7 may be shaped cylindrically, with a circular cross-section in the radial 202401329 direction having a radius r1 and height hi in the axial direction. In embodiments, the handling part 7 may have the cross-section in the radial direction of a polygonal shape.

[0074] As part of the control knob arrangement 3, one may imagine, that an operator may grip the gripping surface 9 when turning the control arrangement 3 around the rotational axis 6, and thus setting an operational value of the gas stove 1 , e.g. a power in terms of a gas flow to the burner. The gripping surface 9 may comprise a surface with an increased friction coefficient, which may be achieved, for example, by roughening the surface when manufacturing. The handling part 7 may, when configured in the control knob arrangement 3, be implemented to transfer the torque provided by the operator of the gas stove 1 to the base part 8, which will be explained later.

[0075] The handling part 7 comprises a cavity 10. The cavity 10 is arranged on a bottom side 11 of the handling part 7 and is open downwards. The bottom side 11 is axially oppositely arranged to a top side 12 of the handling part 7. The top side 12 may comprise an indicator 13. As shown in Fig. 2, the indicator 13 may extend partly on the top side 12 and on the gripping surface 9 over an edge connecting the top side 12 and the gripping surface 9. In other embodiments not shown in Fig. 2, the indicator 13 may be positioned solely on the top side 12.

[0076] The cavity 10 extends axially from the bottom side 11 within the handling part 7 with a height h2. The height h2 is, in particular, smaller compared to the height hi of the handling part 7. The cavity 10 is implemented to receive a part of the base part 8, as shown in Fig. 4. So, the cavity 10 may be a cutout with a shape similar to the shape of the base part 8.

[0077] Further, the handling part 7 is formed by two components plugged together axially, wherein the first component 14 comprises the cavity and the gripping surface 9, and the second component 15 comprises the top side 13. One may imagine that the handling part 7 is used in control knob arrangements 3 for different household appliances, which may require different layouts and / or materials of the top side 12. Therefore, the first component 14 may be combined with second components 15, which may have different layouts, designs and / or materials. For example, the first component 14, which may be manufactured from a cost-effective material such as plastic, may be combined with a 202401329 second component 15 made from metal, wherein metal may be more aesthetical to the operator.

[0078] The first component 14, and the second component 15 may create a hollow space 16, when arranged as the handling part 7. The hollow space 16 may be implemented to save on material and / or to reduce the weight of the handling part 7.

[0079] Fig. 3 shows a cross-sectional view of an embodiment of the base part 8. The base part 8 may have a cylindrical shape with a circular cross-section in the radial direction. The base part 8 may have a radius r2, wherein the radius r2 is smaller than a radius r3 of the cavity 10 (see Fig. 2), wherein the radius r3 is smaller than the radius r1. So, radius r2 < radius r3 < radius r1 .

[0080] The base part 8 further comprises a spring device 17, wherein the spring device 17 comprises a spring 18 and a ball or sphere 19. The spring 18 and the sphere 19 may be arranged within a pot-like sleeve 20, wherein the sleeve 20 has a closed end 21 and an open end 22 oppositely arranged. The spring device 17 may be a spring-loaded thrust piece. The spring 18 is arranged within the sleeve 20 to exercise a spring force F in the direction of the open end 22. The sphere 19 is arranged partly extending out of the open end 22. The spring 18 may be preloaded in the state shown in Fig. 3, pushing the sphere

[0081] 19 against the open end 22 of the spring device 17. A protruding arrangement at the open end 22 prohibits the sphere 19 from being pushed out of the spring device 17. The sleeve

[0082] 20 can have a stopper at its open-end rim to prevent the ball 19 from exiting the sleeve 20.

[0083] The spring device 17 is arranged in an opening 23 of the base part 8. The spring device 17 may, in particular, be fixed within the opening 23 by a press fit. In embodiments, the spring device 17 and the opening 23 may comprise a tread, wherein the spring device 17 is fixed by screwing in. The spring device 17 is arranged such that the open end 22, and therefore the spring force F, is directed in radially outward from the base part 8.

[0084] The base part 8 comprises a back coupling section 24, wherein the back coupling section 24 protrudes in the axial direction from the base part 8. An opening 25 is arranged in the back coupling section 24. The opening 25 may receive a shaft 26 (see Fig. 4) in a torque- 202401329 proof manner, for example, by the opening 25 having a semicircular cross-section, wherein the cross-section of the shaft 26 is corresponding to the one of the opening 25. When configured as the control knob arrangement 3, torque provided by the operator to the handling part 7 is transferred via the base part 8 to the shaft 26. The opening 25 further comprises a fixing means 27 to prevent the shaft 26 from gliding out of the opening 25 in the axial direction.

[0085] The base part 8 further comprises an indicator 28 arranged on a top coupling section 29. The indicator 28 may protrude from the top coupling section 29.

[0086] The base part 8 furthermore comprises a cutout 30. The cutout 30 may have a first surface 31 and a second surface 32. The first surface 31 is, in particular, arranged in the radial direction and normally to the spring force F. In Fig. 2, the first surface 31 is arranged in a direction opposite of the open end 22 and the spring force F.

[0087] The base part 8 may be comprised of a third part 33, comprising the spring device 17 and the top coupling section 29, and a fourth part 34, comprising the back coupling section 24. A hollow space 35 may be formed when the third part 33 and the fourth part 34 are arranged as the base part 8.

[0088] Fig. 4 shows a cross-sectional view of an embodiment of the control knob arrangement 3. The control knob arrangement 3 comprises the handling part 7 and the base part 8. In particular, the top coupling section 29 is accommodated in the cavity 10 of the handling part 7. Therefore, the cavity 10 is shaped corresponding to an outer shell of the top coupling section 29.

[0089] When arranged as the control knob arrangement 3, the sphere 19 is pushed in the radial direction against a first surface 36 (see Fig. 2) by the spring force F provided by the spring device 17. The first surface 36 may provide a recess 37 the sphere 19 is pushed in. The opening of the recess 37 may have a circular shape, having an equal radius as the section of the sphere 19 laying lying against the opening of the recess 37.

[0090] Oppositely, the first surface 31 of the cut-out 30 is pushed due to the spring force F against a second surface 38 (see Fig. 2) within the cavity 10. The handling part 7 may 202401329 therefore be fixed via a frictional connection exercised by the spring force F and the corresponding first surfaces 31 , 38. Pushing the sphere 19 into the recess 37 establishes an additional a form-fit, which increases the strength needed for removing the handling part 7 compared to a fixation solely by a frictional connection.

[0091] Fig. 5 shows a section of the control panel 2 from Fig. 1 , equipped with the base part 8.

[0092] The back coupling side 27 of the base part 8 is inserted in an opening (not shown in Fig. 5) of the control panel 2, wherein the back coupling 27 is rotationally locked to the shaft 26, as shown in Fig. 4. The shaft 26 may be connected to a gas valve (not shown in Fig. 5), wherein the gas valve controls, for example, the previously mentioned gas supply.

[0093] Further, the indicator 28 of the base part 8 is used to indicate a position of the base part 8 and the shaft 26. Therefore, a scale 39 is printed on the control panel 2.

[0094] Although the present invention has been described in accordance with preferred embodiments, it is obvious to the person skilled in the art that modifications are possible in all embodiments.

[0095] 202401329

[0096] Reference Numerals:

[0097] 1 gas stove

[0098] 2 control panel

[0099] 3 control knob arrangement

[0100] 4 cooking hob

[0101] 5 top plate

[0102] 6 rotational axis

[0103] 7 handling part

[0104] 8 base part

[0105] 9 gripping surface

[0106] 10 cavity

[0107] 11 bottom side

[0108] 12 top side

[0109] 13 indicator

[0110] 14 first component

[0111] 15 second component

[0112] 16 hollow space

[0113] 17 spring device

[0114] 18 spring

[0115] 19 sphere

[0116] 20 sleeve

[0117] 21 closed end

[0118] 22 open end

[0119] 23 opening

[0120] 24 back coupling section

[0121] 25 opening

[0122] 26 shaft

[0123] 27 fixing means

[0124] 28 indicator

[0125] 29 top coupling section

[0126] 30 cutout

[0127] 31 first surface

[0128] 32 second surface 202401329 33 third part

[0129] 34 fourth part

[0130] 35 hollow space

[0131] 36 first surface

[0132] 37 recess 38 second surface

[0133] 39 scale

[0134] F spring force hi height h2 height r1 radius r2 radius r3 radius

Claims

202401329CLAIMS1 . A control knob arrangement (3) for a household appliance (1), the control knob arrangement (3) comprising: a base part (8) configured to couple to a rotatable valve shaft (26) in a torque-proof manner; a handling part (7) for exercising a torque on the base part (8); and a spring device (17) for generating a spring force (F); wherein: the handling part (7) comprises a cavity (10) for receiving at least partially the base part (8), wherein the spring device (17) is arranged such that the spring force (F) acts between the cavity (10) and the handling part (7) in a radial direction.

2. The control knob arrangement (3) of claim 1 , wherein the spring device (17) is comprised of the base part (8).

3. The control knob arrangement (3) according to claim 1 or 2, wherein the spring force (F) is radially outward-directed.

4. The control knob arrangement (3) of one of claims 1 to 3, wherein the spring force (F) acts against a first surface (36) within the cavity (10) of the handling part (7).

5. The control knob arrangement (3) according to claim 4, wherein the spring device (17) comprises a spring (18) for generating the spring force (F) and a transfer element (19), wherein the transfer element (19) is implemented to act on the first surface (36).

6. The control knob arrangement (3) according to claim 5, wherein the first surface (36) comprises a recess (37) for accommodating the transfer element (19).

7. The control knob arrangement (3) according to claim 6, wherein the transfer element (19) and the recess (37) have a corresponding shape.2024013298. The control knob arrangement (3) according to one of claims 5 to 7, wherein the transfer element (19) is a sphere.

9. The control knob arrangement (3) according to one of claims 1 to 8, wherein the cavity (10) and the base part (8) have a corresponding cylindrical shape.

10. The control knob arrangement (3) according to one of claims 1 to 9, wherein the base part (8) comprises a cutout (30) with two surfaces (31 , 32), wherein a first surface (31) out of the two surfaces (31 , 32) is arranged normally to the direction of the spring force (F).11 . The control knob arrangement (3) according to claim 10, wherein the first surface (36) and the direction of the spring force (F) are radially oppositely arranged.

12. The control knob arrangement (3) according to one of claim 1 to 11 , wherein the base part (8) and the handling part (7) are solely coupled with frictional engagement.

13. The control knob arrangement (3) according to one of claims 1 to 12, wherein the base part (8) comprises a back coupling section (24) for receiving an end of the rotatable valve shaft (26) in a torque-proof manner, and a front coupling section (29) for accommodating the spring device (17).

14. The control knob arrangement (3) according to claim 13, wherein the back coupling section (24) axially protrudes from the base part (8).

15. A gas stove (1) comprising: a rotatable valve shaft (26) for controlling a gas flow; a control panel (2) having an opening, wherein a rotational axis (6) extends through the opening; and a control knob arrangement (3) according to one of the claims 1 to 14.

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