ES2534141B1 - Drive device for a gas valve, gas valve, and cooking point - Google Patents

Abstract

The invention relates to a drive device (1) for a gas valve (2), with: a base element (12) that is fixed to a drive shaft (10) of the gas valve (2), where the base element (12) has a gear section (21), with a drive element (13) in which the base element (12) is housed, where the drive element (13) is rotatable relative to the element base (12), and where the drive element (13) has a counter-gear section (25) that is configured to engage in gear engagement in the gear section (21), and with a transmitter device (17). Here, the transmitting device (17) is configured to transform a rotating movement of the actuating element (13) into a translational movement of the actuating element (13) relative to the base element (12), to lock or unlock the element of actuation (13) of the base element (12) around a predetermined angular section of rotation ({al}).

Description

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OPERATING DEVICE FOR A GAS VALVE, GAS VALVE, AND COOKING POINT

DESCRIPTION

The present invention relates to a drive device for a gas valve, a gas valve, and a cooking point.

A gas regulating valve, for example, for a gas cooking point, may have a valve housing and a closing element rotatably housed in the valve housing. To actuate the closing element, it is connected, for example, with a drive element, which can be, by way of example, a rotating button. By applying a rotating movement on the actuating element, the gas flow through the gas regulating valve can be regulated. The graduated gas regulating valves are known, in which the heating power of a gas burner corresponds to interlocking degrees of the gas regulating valve. For reasons related to regulation, when a gas regulating valve is opened, it is necessary that the rotary button is first pressed and then rotated around a predetermined angular section of rotation, before the gas regulating valve unlocks a flow of gas.

Given this background, the invention solves the technical problem of providing an improved actuation device for a gas valve.

Therefore, a drive device for a gas valve is proposed, with a base element that is torsionally coupled with a drive shaft of the gas valve, where the base element has a gear section, with a drive element in which the base element is housed, at least partially, where the drive element is rotatable relative to the base element, and where the drive element has a counter gear section that is configured to engage in trailed engagement shape in the gear section, and with a transmitter device. Here, the transmitting device is configured to transform a rotating movement of the drive element relative to the base element into a translation movement of the drive element relative to the base element, where the drive element is axially movable along the base element by means of the transmitting device alternatively of an unlocking position, in which the counter gear section

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it is disengaged from the gear section, to an interlocking position, in which the counter gear section is engaged in engagement with the gear section, and where the transmitting device is configured such that the drive element remains in the unlocking position when a rotating movement of the actuating element occurs relative to the base element around a predetermined angular section of rotation.

The base element and the drive element can be plastic and / or metal components. The gas valve is a gas regulating valve, which can be arranged in a supply line directed towards a gas burner. Preferably, the gas valve is a graduated gas regulating valve, and has angular levels of 36 °. When the drive element first remains in the unlocked position when a rotational movement around the predetermined angular section of rotation occurs, the rotational movement of the drive element does not become a rotational movement of the drive shaft until the drive is reached. predetermined angular section of rotation. In this way, the requirement is satisfied that, when the gas valve is operated, no rotary movement of the drive shaft must be performed by the predetermined angular section of rotation.

According to one form of realization, the predetermined angular section of rotation amounts to 90 °.

The predetermined angular section of rotation preferably amounts to 90 °, since in this way the technical norms related to safety can be respected. It may be predetermined that, when the drive element is rotated through the first 90 ° of the turning path, there must be no flow of gas flowing through the gas valve. The predetermined angular section of rotation can also amount to 36 °. The term "angle of 90 °, or 36 °" includes the concept of the respective angle ± 10 °, preferably, ± 5 °, more preferably, ± 3 °, more preferably, ± 1 ° , more preferably, ± 0 °.

According to another embodiment, the transmitting device is configured in such a way that, in case of rotational movement of the actuating element relative to the base element beyond the predetermined angular section of rotation, the transmitting device is configured such that the drive element is movable from the unlocking position to the interlocking position.

The transmitting device preferably has a slide glutton and a glutton pin which is configured to slide on the slide glutton.

By means of the transmitting device, a rotating movement of the actuating element can be transformed into a translation movement thereof in a simple and effective manner. The glutton plug is, in particular, a metal plug.

According to another embodiment, the gear section is an outer gear provided 5 in the base element, where the counter gear section is an inner gear provided in the drive element.

The outer gear and the inner gear are configured to engage each other in shape drag. In this way, a rotation movement of the drive element can be transformed into a rotation movement of the drive shaft without slipping.

According to another embodiment, the drive device has a spring device arranged between the base element and the drive element.

The spring device is a helical spring and, preferably, is a compression spring.

15 According to another embodiment, the drive element is spring pre-tensioned in the direction of the unlocking position by the spring device.

The spring device presses the drive element away from the base element.

According to another embodiment, the transmitter device has a slide glide, 20 provided in the drive element, and a glutton pin, integral with the base element.

The sliding guide is provided on an upper edge of a tubular base body of the actuating element, where the upper edge preferably runs parallel to a lower edge of the base body. The gliding slide can have a final stop, on which the glide pin can be supported. The end stop preferably extends beyond the upper edge, and can be followed by a first ramp-shaped section of the sliding glutton, which extends obliquely away from the upper edge. The first section extends peripherally through the predetermined angular section of rotation.

According to another embodiment, the glide pin is fixed to the base element.

The glide pin can be snapped, indirectly welded, glued, directly welded and / or otherwise fixedly mounted, inside a recess of the base element.

According to another embodiment, in case of rotational movement of the actuation element relative to the base element around the predetermined angular section of rotation, the actuation element is movable from the unlocking position to the interlocking position.

According to another embodiment, the transmitter device has a slide guide, provided in the base element, and a glutton pin, integral with the drive element.

10 The sliding guide is a groove provided in the base element.

According to another embodiment, the glide pin is fixed to the drive element.

The glide pin may be snapped, indirectly welded, glued, directly welded and / or otherwise fixedly mounted, inside a corresponding recess of the base element.

According to another embodiment, the slide guide has an interlocking section in which the guide pin engages in the locking position of the drive element, so that the drive element is fixed relative to the base element. .

By pressing the drive element against a spring force of the spring device, the glide pin can be disengaged from the interlocking section.

According to another embodiment, by moving the actuating element beyond the interlocking position, the glide pin is disengageable from the interlocking section of the sliding guide.

In this way, the drive element is quickly and easily disengageable.

25 Likewise, a gas valve with such a drive device is proposed.

The gas valve is in particular a gas regulating valve, and can be a graduated gas regulating valve.

Likewise, a cooking point with a drive device of such type and / or with a gas valve of such type is proposed.

The cooking point is, in particular, a gas cooking point.

Other possible implementations of the invention also comprise combinations not mentioned explicitly of features or embodiments described above, or below, in relation to the embodiments. Here, the expert in the field will also add to the respective basic form of the invention particular aspects such as improvements or complements.

Other configurations and advantageous aspects of the invention are the subject of the secondary claims, as well as the embodiments of the invention described below. Next, the invention is explained in more detail by means of preferred embodiments, with reference to the attached figures.

Fig. 1 shows a schematic perspective view of an embodiment of a drive device for a gas valve;

Fig. 2 shows a schematic perspective view of a spring device of the embodiment of the drive device according to figure 1;

Fig. 3 shows a schematic perspective view of a base element of the embodiment of the drive device according to figure 1;

Fig. 4 shows a schematic perspective view of a drive element of the embodiment of the drive device according to figure 1;

Fig. 5 shows a schematic top view of the embodiment of the drive device according to figure 1;

Fig. 6 shows a schematic side view of the embodiment of the drive device according to figure 1;

Fig. 7 shows a schematic perspective view of another embodiment of a drive device for a gas valve;

Fig. 8 shows a schematic perspective view of a spring device of the embodiment of the drive device according to figure 7;

Fig. 9 shows a schematic perspective view of a base element of the embodiment of the drive device according to figure 7; Y

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Fig. 10 shows a schematic perspective view of a drive element of the embodiment of the drive device according to figure 7.

In the figures, the same or equal function elements have been provided with the same reference symbols, as long as nothing else is indicated.

Figure 1 shows a schematic representation exploded in perspective of a drive device 1 for a gas valve 2, which is, in particular, a gas regulating valve. Figure 1 also shows a cooking point 3, in particular a gas cooking point, with a cooking hob 4, in particular, with a gas cooking hob. The cooking point 3 is, in particular, a domestic appliance. The gas valve 2 is arranged between a main gas duct not shown and a gas burner of the cooking hob 4.

The gas valve 2 has a valve housing 5 with a gas inlet 6 and gas outlets 7, 8. By means of a clamping plate 9, the valve housing 5 is clamped together with the main gas duct of the cooking hob 4, and by means of the gas valve 2 a gas flow to the gas burner is adjustable. A drive shaft 10 protrudes from the valve housing 5, whereby a volumetric flow rate that flows through the gas valve 2 is adjustable, and which preferably has a circular cross-section, where a lateral flattening 11 is provided in a final section of the drive shaft 10, opposite the valve housing 5.

The drive device 1 has a base element 12, which is torsionally coupled to the drive shaft 10, and a drive element 13, which houses the base element 12, at least partially, that is, the base element 12 is introducible in the actuation element 13. The actuation element 13 is preferably coupled with an actuation button of the actuation device 1. The actuation element 13 is preferably made in one piece in terms of the material with the drive

Also, the drive device 1 has a spring device 14 disposed between the drive element 13 and the base element 12. The drive device 1 has a glutton pin 15 and a slide glutton 16, which form a transmitter device 17 of the drive device 1. The glide pin 15 slides on the slide guide 16, and is pressed against it by the spring device 14.

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Figure 2 shows the spring device 14 in a schematic perspective representation. The spring device 14 is preferably a helical spring or spiral spring, in particular, it is a compression spring. Figure 2 shows the spring device 14 in a compressed state. The spring device 14 has an inner diameter Di14 and an outer diameter Da14.

Figure 3 shows the base element 12 in schematic perspective view. The base element 12 has a tubular base body 18 with a longitudinal axis L12, which has an annular cross section with a flattening provided in the inner wall. The flattening of the base body 18 is performed correspondingly to the flattening

11 of the drive shaft 10, so that, after engaging on the drive shaft 10, the base element 12 is coupled with it in a torsion-resistant manner.

The tubular base body 18 is closed by a first final section with a front wall 19, and has a diameter D18, which is smaller than the inner diameter Di14 of the spring device 14. In a second final section opposite the first final section, a flange 20 is provided that surrounds the base body 18 in the form of a disk. A diameter D20 of the flange 20 is larger than the outer diameter Da14 of the spring device 14, so that it rests on the flange 20.

A gear section 21, which is provided spaced from the flange 20, is an outer gear of the base element 12, arranged on the outer side of the base body 18. Above the gear section 21, that is, between the gear section 21 and the front wall 19, a recess 22 is provided in the base body 18, which can pass through the base body 18. The recess 22 is preferably a bore. The glutton pin 15 is housed in the recess 22 so that it protrudes laterally from the base body 18, being able to project laterally from the flange 20. The glutton pin 15 is fixedly mounted to the base element 12. As an example, the glide pin 15 is snapped in, directly or indirectly welded and / or glued inside the recess 22. The base element

12 is preferably made in one piece in terms of the material, and may be made partially or entirely of a metallic material or a plastic material. By way of example, the base element 12 is a plastic injection molded part.

Figure 4 shows the drive element 13 in schematic perspective view.

The actuation element 13 has a tubular base body 23 opened by both

sides with an inside diameter Di23 and an outside diameter Da23. The inside diameter Di23 is

preferably larger than the outer diameter Da14 of the spring device 14, so

that this is accommodated, at least partially, in the base body 23. In an interior wall 24

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of the base body 23 a counter gear section 25 of the drive element 13 is provided. The counter gear section 25 is configured to engage in gear engagement in the gear section 21 of the base element 12, and is an inner gear.

The spring device 14 is supported by the lower side in the counter gear section 25, that is, the spring device 14 is disposed between the base element 12, in particular, the flange 20, and the drive element 13, in particular , the counter gear section 25. The drive element 13 is disposed between the spring device 14 and the glide pin 15.

A lower edge 26 of the base body 23 points in the direction of the flange 20 of the base element 12. The drive element 13 has the slide guide 16, which is provided in an upper edge 27 opposite to the lower edge 26 of the base body 23. The upper edge 27 extends parallel to the lower edge 26. The slide guide 16 has an end stop 28, on which the glide pin 15 can be supported. The end stop 28 protrudes from the upper edge 27. The end stop 28 is a first ramp-shaped section 29 of the slide guide 16 follows, which extends obliquely away from the upper edge 27. The first section 29 extends obliquely to the upper edge 27, and is transformed into a second ramp-shaped section 30 which extends returning in the direction of the upper edge 27. The first section 29 is extended by a predetermined angular section of the base body 23 (Figure 5). The angular rotation section to predetermined preferably amounts to 90 °. The term "90 °" includes the concept of an angle of 90 ° ± 10 °, preferably, 90 ° ± 5 °, more preferably, 90 ° ± 1 °, more preferably, exactly 90 °.

The actuating element 13 can be made partially or totally of a metallic material or of a plastic material, and is, by way of example, a plastic injection molded part.

The mode of operation of the drive device 1 is explained by means of Figures 5 and 6, which are referred to simultaneously hereinafter. Figure 5 shows a schematic top view on the drive device 1, and Figure 6 shows a schematic side view of the drive device 1. Figures 5 and 6 show the drive device 1 in an operating state in which the gas valve 2 is closed.

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The transmitting device 17 is configured to transform a rotating movement of the drive element 13 relative to the base element 12 into a translation movement of the drive element 13 relative to the base element 12. By means of the transmitter device 17, the element of actuation 13 is axially movable along the base element 12 of an unlocking position, shown in figures 5 and 6, in which the counter gear section 25 is disengaged from the gear section 21, to an interlocking position, in the one that the counter gear section 25 is engaged in gear with the gear section 21.

In Fig. 6, the glide pin 15 is supported on the end stop 28 of the slide guide 16. The counter gear section 25 of the drive element 13 is disengaged from the gear section 21 of the base element 12. If it is carried out a rotating movement of the drive element 13 relative to the base element 12, the glide pin 15 slides over the ramp section 29 of the slide glutton 16. Here, the drive element 13 is moved down against a spring force F14 of the spring device 14 along the base element 12, that is, in the direction of the flange 20. When the drive element 13 is rotated with respect to the base element 12 by the angular to predetermined section, the element drive 13 remains first in the unlocked position; that is, the counter gear section 25 is disengaged from the gear section 21 when a rotation is made that is smaller than the predetermined angular section.

If there is a turn beyond the angular section to predetermined, the drive element 13 is brought to the interlocking position. By means of the axial movement of the drive element 13 relative to the base element 12, the counter-gear section 25 and the gear section 21 are engaged, so that the drive element 13 is brought to the interlocking position. The drive element 13 is in the interlocking position if the glide pin 15 is positioned on the highest point of section 29, which is the transition from section 29 to section 30.

As soon as the drive element 13 is in the locked position, that is, if the drive element 13 is rotated relative to the base element 12 beyond the angular rotation section to predetermined, a rotating movement of the element of drive 13 is transformed into a rotating movement of drive shaft 10. Therefore, drive shaft 10 is not moved at the same time by the first 90 ° of a turning movement of drive element 13. A

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from a rotation angle of 90 °, the drive shaft 10 is moved together with the drive element 13. The spring device 14 presses the drive element 13 in the direction of the unlocking position.

Figure 7 shows a schematic representation exploded in perspective of another embodiment of a drive device 1 for a gas valve 2. The gas valve 2 preferably has the same construction as the gas valve 2 according to Figure 1.

The drive device 1 has a base element 12, which is torsionally coupled to the drive shaft 10, and a drive element 13, which houses the base element 12, at least partially, that is, the base element 12 is introducible into the drive element 13. The drive element 13 is preferably coupled with a drive button of the drive device 1. Preferably, the drive element 13 is made as a drive button.

Also, the drive device 1 has a spring device 14 disposed between the drive element 13 and the base element 12. The drive device 1 has a glutton pin 15 and a slide glutton 16, which form a transmitter device 17 of the drive device 1.

Figure 8 shows the spring device 14 in schematic perspective representation. The spring device 14 is preferably a helical spring and is, in particular, a compression spring. In Fig. 8, the spring device 14 is shown in a compressed state. The spring device 14 has an inner diameter Di14 and an outer diameter Da14. The embodiment of the spring device 14 according to Figure 8 preferably has an outside diameter Da14 smaller than the embodiment of the spring device 14 according to Figure 2.

Figure 9 shows the base element 12 in schematic perspective view. The base element has a cylindrical base body 18 with a diameter D18. The base body 18 has a central recess 32 in a first final section 31, the recess 32 having preferably a circular cross section with a lateral flattening, which is made corresponding to the flattening of the drive shaft 10, so that, after fit on the drive shaft 10, the base element 12 is coupled with it in a torsion-resistant manner.

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In the first final section 31 a gear section 21 is provided as an outer gear that surrounds the base body 18. From the second final section 33 of the base body 18 a cylindrical housing section 34 for the spring device 14 with a diameter D34 stands out . The diameter Di14 of the spring device 14 is preferably larger than the diameter D34, so that the spring device 14 is snapped onto the housing section 34.

The base element 12 also has the slide guide 16, which is made as a groove incorporated in the base body 18, and which has a first groove section 35, which extends in the direction of a longitudinal axis L12 of the base element 12, and a second groove section 36, which follows the first groove section 35, and which extends obliquely to the longitudinal axis L12. The second groove section 36 is followed by a third groove section 37, which also runs obliquely to the longitudinal axis and extends in the opposite direction to the second groove section 36. A fourth groove section, which extends returning in the direction of the first groove section 35, or interlocking section 38, follows the third groove section 37, and extends in the direction of the longitudinal axis L12 towards the first groove section 35.

Figure 10 shows the drive element 13 in schematic perspective view. The actuating element 13 has a tubular base body 23, which is closed by a final section 39 with a front wall, the front wall 30 preferably having a central opening 41. A diameter of the central opening may be larger than the diameter D34 of the housing section 34 of the base element 12. The spring device 14 is disposed between the front wall 40 and the base element 12. On an inner wall 42 of the base body 23 of the drive element 13 is provided a counter gear section 25, which is made as a circulating inner gear, correspondingly shaped to the gear section 21.

The counter gear section 25 is preferably provided in a second or lower end section 43 of the base body 23. Also, in the base body 23 an opening 44 is provided in which the glutter pin 15 is fixed, which can be attached, welded directly or indirectly and / or snapped into the opening 44. The glide pin 15 is positioned such that it penetrates laterally into an interior space 45 of the base body 23. An inside diameter Di23 of the base body 23 is larger than the outer diameter D18 of the base body 18 of the base element 12, so that the base element 12 is at least partially housed in the drive element 13.

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The operation mode of the drive device is explained below. In an unlocking position of the drive element 13, the glide pin 15 is positioned in the first groove section 35 of the slide guide 16. The spring device 14 presses the drive element 13 in the direction of the unlocking position. . The gear section 21 is disengaged from the counter gear section 25. The drive element 13 is pressed against a spring force F14 of the spring device 14, while the drive element 13 is rotated against the clockwise direction. around the longitudinal axis L12 of the base element 12, the glide pin 15 is raised out of the first slot section 35 of the slide guide 16, and slides along the second slot section 36. Then, the section Counter gear 25 approaches gear section 21. The angle of rotation preferably rises here to 90 °.

By continuing to press down on the actuating element 13 against the spring force F14 of the spring device 14, and turning it clockwise, the glide pin 15 slides over the third groove section 37 of the glutton of slide 16. Then, gear section 21 and counter gear section 25 are closer. The angle of rotation to the interlocking section 38 preferably amounts to 54 °. As soon as the glide pin 15 is in the interlocking section 38, the gear section 21 and the counter-gear section 25 are engaged in shape dragging. The drive element 13 is in its interlocking position, and the predetermined angular section of rotation amounts to 36 ° here. The glide pin 15 is pressed by the spring device 14 against the interlocking section 38. As soon as the actuating element 13 is in the interlocking position, that is, if the actuating element 13 is turned relative to the base element 12 beyond the angular rotation section to predetermined, a rotating movement of the driving element 13 is transformed into a rotating movement of the driving shaft 10.

Although the present invention has been described by means of realization examples, it is modifiable in various ways.

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References symbols

Drive device

Gas valve

Cooking point

Cooking countertop

Valve housing

Gas inlet

Gas outlet

Gas outlet

Tightening plate

Drive shaft

Flattening

Base element

Drive element

Spring device

Glutton plug

Sliding gluttony

Transmitter device

Base body

Front wall

Flange

Gear section Drain Base body Inside wall

Counter Gear Section

Lower edge

Upper edge

End stop

Section

Section

Final section

Emptying

Final section

Accommodation Section

 35

 Slot section

 36

 Slot section

 37

 Slot section

 38

 Interlocking section

 39

 Final section

 40

 Front wall

 41

 Opening

 42

 Inner wall

 43

 Final section

 44

 Opening

 Four. Five

 Interior space

 Da14

 Diameter

 Say14

 Diameter

 DL8

 Diameter

 Or CM Q

 Diameter

 Da23

 Diameter

 Di23

 Diameter

 D34

 Diameter

 F14

 Spring force

 L12

 Longitudinal axis

 to

 Angular section of rotation

Claims (14)

5 10 fifteen twenty 25 30 1. Drive device (1) for a gas valve (2), with: a base element (12) that is torsionally coupled to a drive shaft (10) of the gas valve (2), characterized in that the base element (12) has a gear section (21), a drive element (13) in which the base element (12) is housed, at least partially, where the drive element (13) is rotatable relative to the base element (12), and where the drive element (13) presents a counter gear section (25) that is configured to engage in gear engagement in the gear section (21), and a transmitter device (17) that is configured to transform a rotating movement of the drive element (13) relative to the base element (12) into a translation movement of the drive element (13) relative to the base element (12 ), where the drive element (13) is axially movable along the base element (12) by means of the transmitter device (17) in an alternative way of an unlocking position, in which the counter-gear section (25) is disengaged from the gear section (21), to an interlocking position, in which the counter-gear section (25) is engaged in drag with the gear section (21), and where the transmitter device (17) is configured such that the drive element (13) remains in the unlocked position when a rotating movement of the drive element (13) occurs relative to the base element (12) around u na angular section of rotation (a) predetermined. 2. Drive device according to revindication 1, characterized in that the predetermined angular rotation section (a) amounts to 90 °. 3. Drive device according to claim 1 or 2, characterized in that, in case of rotational movement of the drive element (13) relative to the base element (12) beyond the predetermined angular section of rotation (a), the transmitter device (17) is configured such that the element of 5 10 fifteen twenty 25 30 35 drive (13) is movable from the unlocking position to the interlocking position. 4. Drive device according to one of claims 1-3, characterized in that the gear section (21) is an outer gear provided in the base element (12), and that the counter gear section (25) is an inner gear provided in the drive element (13). 5. Drive device according to one of claims 1-4, characterized by a spring device (14) disposed between the base element (12) and the drive element (13). 6. Drive device according to claim 5, characterized in that the drive element (13) is spring pre-tensioned in the direction of the unlocking position by means of the spring device (14). 7. Drive device according to one of claims 1-6, characterized in that the transmitter device (17) has a slide guide (16), provided in the drive element (13), and a glutton pin (15), in solidarity with the base element (12). 8. Drive device according to claim 7, characterized in that the glide pin (15) is fixed to the base element (12). 9. Drive device according to one of claims 1-6, characterized in that the transmitting device (17) has a slide glide (16), provided in the base element (12), and a guida pin (15), integral to the drive element (13). 10. Drive device according to claim 9, characterized in that the glide pin (15) is fixed to the drive element (13). 11. Drive device according to claim 9 or 10, characterized in that the slide guide (16) has an interlocking section (38) in which the guide pin (15) engages in the locking position of the locking element 10 drive (13), so that the drive element (13) is fixed relative to the base element (12). 12. Drive device according to claim 11, characterized in that, by moving the drive element (13) beyond the interlocking position, the glide pin (15) is disengageable from the interlocking section (38) of the guide sliding (16). 13. Gas valve (2), with a drive device (1) according to one of claims 1-12. 14. Cooking point (3), with a drive device (1) according to one of claims 1-13 and / or with a gas valve (2) according to claim 13.