Ignition knob device and gas stove

Abstract

The invention relates to an ignition rotary knob device and a gas stove, the ignition rotary knob device comprises a protective cover which can be controllably switched between a protective state and a working state, when the protective cover is in the protective state, an ignition needle is located in the protective cover, and when the protective cover is in the working state, at least part of the ignition needle is exposed out of the protective cover; the knob assembly is movably mounted on the gas valve and used for controlling the gas valve to be switched between an open state and an open state; the linkage piece is connected with the knob assembly and the protection cover, through the linkage device, in the process that the knob assembly controls the gas valve to be switched from the disconnected state to the open state, the knob assembly drives the protection cover to be switched from the protection state to the working state through the linkage piece, and automatic leakage of the ignition needle during ignition is achieved; a user is prevented from forgetting to open the protective cover to influence the ignition effect.

Description

Technical Field

[0001] This application relates to the field of kitchen equipment technology, and in particular to an ignition knob device and a gas stove. Background Technology

[0002] Household gas stoves are a common type of kitchen appliance, typically using an ignition needle to generate an electric spark to ignite combustible gas. Because the ignition needle is constantly exposed to the kitchen environment, especially during cooking, it is easily contaminated or corroded by oil, spilled liquids, etc., leading to oxidation or carbon buildup on its surface, affecting ignition performance. Furthermore, the ignition needle is relatively fragile and easily deformed or broken by impact, which can lead to ignition failure in severe cases.

[0003] To address the aforementioned issues, some gas stoves have protective covers on the burner caps to protect the ignition needles. However, users must manually open these covers when using the gas stove, which not only increases the complexity of use but also prevents the gas from igniting in time if the user forgets to open the cover and directly operates the ignition knob. This results in gas waste and even safety hazards. Summary of the Invention

[0004] Therefore, it is necessary to provide an ignition knob device and a gas stove to address the issue of users having to manually remove the protective cover when using the gas stove.

[0005] An ignition knob device, the ignition knob device comprising:

[0006] The protective cover has a protective state that covers the ignition needle and a working state that exposes at least part of the ignition needle.

[0007] A knob assembly, movably mounted on the gas valve, is used to control the gas valve to switch between an open and closed state; and

[0008] A linkage component connects the knob assembly and the protective cover;

[0009] During the process of the knob assembly controlling the gas valve to switch from the disconnected state to the open state, the knob assembly drives the protective cover to switch from the protected state to the working state via the linkage component.

[0010] In one embodiment, during the process of the knob assembly controlling the gas valve to switch from the open state to the closed state, the knob assembly drives the protective cover to switch from the working state to the protective state via the linkage.

[0011] In one embodiment, while maintaining the gas valve in the open state, the knob assembly can also controllably drive the protective cover to switch from the working state to the protective state via the linkage.

[0012] In one embodiment, the knob assembly includes a knob cover and a base structure. The base structure is movably disposed on the gas valve along the first direction, and the base structure has a first position and a second position relative to the gas valve during movement. When the base structure is in the first position, the gas valve is in the off state, and when the base structure is in the second position, the gas valve is in the open state.

[0013] The knob cover is movably disposed on the side of the base structure away from the gas valve along the first direction. The linkage connects the knob cover and the protective cover. During the movement of the knob cover relative to the base structure, there are a third position and a fourth position. The fourth position is located on the side of the third position facing the gas valve. When the knob cover is in the fourth position, the knob cover abuts against the base structure.

[0014] When the base structure is in any position during movement and the knob cover is in the third position, the protective cover is in the protective state. When the base structure is in the second position and the knob cover is in the fourth position, the protective cover is in the working state.

[0015] In one embodiment, the protective cover has a protective hole extending longitudinally along a first direction, the linkage extends longitudinally along a second direction intersecting the first direction, and the two opposite ends of the linkage are respectively connected to the knob cover and the protective cover.

[0016] When the base structure is in any position during movement and the knob cover is in the third position, the ignition needle retracts into the protective hole. When the base structure is in the second position and the knob cover is in the fourth position, at least a portion of the ignition needle extends out of the protective cover.

[0017] In one embodiment, the knob assembly further includes a first elastic element that elastically abuts against the knob cover and the base structure, and accumulates an elastic force to cause the knob cover to move from the third position to the fourth position during the movement of the knob cover from the third position to the third position.

[0018] In one embodiment, the base structure is used to abut against a second elastic element within the gas valve, and during the movement of the base structure from the first position to the second position, the second elastic element accumulates an elastic force to cause the base structure to move from the second position to the first position.

[0019] In one embodiment, when the base structure is in the second position, the knob cover can controllably drive the base structure to rotate around its own axis, and the knob cover is rotatably connected to the linkage member around its own axis.

[0020] In one embodiment, an insertion portion is provided on one of the knob cover and the linkage, and a knob limiting groove is provided on the other. The knob limiting groove has two limiting walls spaced apart in the direction of the knob assembly, and the insertion portion is located between the two limiting walls.

[0021] In one embodiment, the linkage is provided with the insertion part, the insertion part is provided with the insertion hole that extends through in a first direction, the part of the knob cover having the knob limiting groove passes through the insertion hole, and the edge of the limiting hole is located in the knob limiting groove.

[0022] In one embodiment, the knob cover is provided with a limiting part, and the base structure is provided with a limiting hole extending longitudinally along the first direction. The limiting part passes through the limiting hole and is rotatably connected to the linkage member around the axis of the knob cover.

[0023] In one embodiment, the inner wall of the limiting hole is recessed to form a sliding groove extending longitudinally along the first direction, and the limiting part slides in conjunction with the sliding groove.

[0024] In one embodiment, when the base structure is in the second position, during the process of the knob cover driving the base structure to rotate around its own axis, the knob cover includes an ignition position. When the knob cover is in the ignition position, the base structure is movable relative to the gas valve along the first direction. When the knob cover rotates to avoid the ignition position, the gas valve prevents the gas valve from moving towards the first position along the first direction.

[0025] In one embodiment, the gas valve includes a limiting end cap with a limiting groove. The portion of the base structure located inside the gas valve has a limiting block, which is located on the side of the limiting end cap away from the knob cover in the first direction.

[0026] When the base structure is in the first position and the knob cover is in the ignition position, the limiting block is located inside the end cover limiting groove, and the end cover limiting groove prevents the limiting block from rotating around the axis of the base structure. When the base structure is in the second position, the limiting block is located outside the end cover limiting groove.

[0027] A gas stove includes an ignition needle, a gas valve, and an ignition knob device as described in any of the preceding claims.

[0028] The aforementioned ignition knob device, through a linkage mechanism, allows the knob assembly to control the gas valve from the off state to the open state. Simultaneously, the knob assembly, via the linkage, moves the protective cover from the protected state to the working state, automatically allowing the ignition needle to leak out during ignition, preventing users from forgetting to remove the protective cover and affecting ignition performance. At the same time, during the same process, the knob assembly also moves the protective cover from the working state to the protected state, automatically protecting the ignition needle when the gas stove is not in use, preventing dirt from directly contacting the ignition needle and protecting it from impact and deformation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the ignition knob device in some embodiments of this application.

[0030] Figure 2 for Figure 1 A cross-sectional schematic diagram of the ignition knob device in the embodiment.

[0031] Figure 3 for Figure 2 A schematic diagram of the central knob assembly.

[0032] Figure 4 for Figure 2 Cross-sectional schematic diagram of the central knob assembly and linkage.

[0033] Figure 5 This is a schematic diagram of the structure of the knob cover in some embodiments of this application.

[0034] Figure 6 This is a schematic diagram of the matrix structure in some embodiments of this application.

[0035] Figure 7 This is a schematic diagram of the valve stem structure in some embodiments of this application.

[0036] Figure 8 for Figure 7 A schematic diagram of the valve stem from another perspective.

[0037] Figure 9 This is a schematic diagram of the structure of the limiting end cap in some embodiments of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] Protective cover 100; ignition needle 110; protective hole 120; flame cap 130;

[0040] Knob assembly 200; Knob cover 210; Knob limiting groove 211; Limiting wall 212; Limiting part 213;

[0041] 220; base structure; 221; slide groove; 222; knob base; valve stem; 224; limit block; 225; slot; 226;

[0042] First elastic element 230;

[0043] Gas valve 300; second elastic element 310; limiting end cap 320; end cap limiting groove 330;

[0044] Linkage component 400; Insertion part 410; Insertion hole 420;

[0045] First direction X. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0048] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0052] See Figure 1 and Figure 2 One embodiment of this application provides a gas stove, including a burner cap 130, an ignition needle 110, a gas valve 300, and an ignition knob device. The burner cap 130 has a gas outlet for releasing gas, which is connected to the gas valve 300, which is connected to a gas source. When the user operates the ignition knob device, the ignition knob device connects the ignition needle 110 to an external circuit through a lever or pulse switch, causing a high-frequency voltage to be generated on the ignition needle 110. At the same time, the ignition knob also controls the gas valve 300 to connect the gas outlet to the gas source. When the gas from the gas source is ejected from the gas outlet, the ignition needle 110 generates an electric spark due to the voltage difference between itself and the burner cap 130. Finally, the electric spark ignites the gas, realizing the combustion of the gas on the burner cap 130 to form a flame.

[0053] The ignition knob device includes a protective cover 100, a knob assembly 200, and a linkage 400. The protective cover 100 is made of a high-temperature resistant hard metal material, such as stainless steel or lead-copper alloy, to protect the ignition needle 110 from contamination and deformation. The knob assembly 200 is movably mounted on the gas valve 300 to control its switching between open and closed states. When the gas valve 300 is open, the gas source connects to the gas outlet on the burner cap 130 through the gas valve 300 to generate a flame. When the gas valve 300 is closed, it disconnects the connection between the burner cap 130 and the gas source to prevent gas leakage.

[0054] In actual use, when the user needs to ignite the gas, in order to ensure that the ignition needle 110 can generate an electric spark to ignite the gas, it is necessary to ensure that there is no obstruction between the ignition needle 110 and the burner cap 130. For this purpose, the protective cover 100 can be controlled to switch between a protective state and an operating state. When the protective cover 100 is in the protective state, the ignition needle 110 is located inside the protective cover 100. When the protective cover 100 is in the operating state, at least a portion of the ignition needle 110 is exposed outside the protective cover 100.

[0055] Thus, when the user needs to ignite the gas stove, the protective cover 100 can be switched to the working state, allowing the ignition needle 110 to be exposed outside the protective cover 100, thereby generating an electric spark through the exposed portion of the ignition needle 110 to ignite the gas. When the user does not need to use the gas stove, the protective cover 100 can be switched to the protection state to protect the ignition needle 110.

[0056] To prevent users from forgetting to switch the protective cover 100 to the working state when igniting, the linkage 400 connects the knob assembly 200 and the protective cover 100. During the process of the knob assembly 200 controlling the gas valve 300 to switch from the off state to the open state, the knob assembly 200, via the linkage 400, drives the protective cover 100 to switch from the protected state to the working state. Thus, as long as the user operates the knob assembly 200 to open the gas valve 300, the knob assembly 200 can automatically switch the protective cover 100 to the working state via the linkage 400, ensuring that the ignition needle 110 is exposed outside the protective cover 100 and can properly ignite the gas.

[0057] The aforementioned ignition knob device, through a linkage mechanism, enables the knob assembly 200 to control the gas valve 300 to switch from the off state to the open state during the process. At the same time, the knob assembly 200 drives the protective cover 100 to switch from the protective state to the working state via the linkage component 400, thereby achieving automatic external leakage of the ignition needle 110 during ignition and preventing the user from forgetting to open the protective cover 100, which would affect the ignition effect.

[0058] In some embodiments of this application, during the process of the knob assembly 200 controlling the gas valve 300 to switch from an open state to a closed state, the knob assembly 200 drives the protective cover 100 to switch from an operating state to a protective state via the linkage 400. Thus, when the user does not need to use the gas stove, the knob assembly 200 can automatically switch the protective cover 100 to the protective state via the linkage 400, thereby protecting the ignition needle 110 from direct contact with dirt and preventing it from being deformed by impact.

[0059] In some embodiments of this application, while maintaining the gas valve 300 in the open state, the knob assembly 200 can also be controlled to switch the working state to the protection state via the linkage 400. In actual use, during prolonged cooking, such as stewing or boiling, if the ignition needle 110 is exposed for an extended period, oil or impurities can easily fall onto it. Therefore, with the gas valve 300 in the open state, after the gas on the burner cap 130 has ignited, the protective cover 100 can be switched to the protection state via the knob assembly 200 and the linkage 400 to protect the ignition needle 110 during prolonged cooking.

[0060] In order to ensure that the protective cover 100 is also in a protected state when the gas valve 300 is in the open state, some embodiments of this application refer to... Figure 3 and Figure 4 The knob assembly 200 includes a knob cover 210 and a base structure 220. The base structure 220 is movably disposed on the gas valve 300 along a first direction X. During movement, the base structure 220 has a first position and a second position relative to the gas valve 300. When the base structure 220 is in the first position, the gas valve 300 is in the off state; when the base structure 220 is in the second position, the gas valve 300 is in the open state. In actual use, the first direction X is the vertical direction. The base structure 220 is located above the gas valve 300, and the first position is above the second position. Thus, when the base structure 220 moves downward, the gas valve 300 switches to the open state; conversely, when the base structure 220 moves upward, the gas valve 300 switches to the off state.

[0061] The knob cover 210 is movably disposed on the side of the base structure 220 away from the gas valve 300 along the first direction X. A linkage 400 connects the knob cover 210 and the protective cover 100. During its movement relative to the base structure 220, the knob cover 210 includes a third position and a fourth position. The fourth position is located on the side of the third position facing the gas valve 300, i.e., the third position is above the fourth position. When the knob cover 210 is in the fourth position, it abuts against the base structure 220. It is understood that the movement of the knob cover 210 relative to the base structure 220 and the movement of the base structure relative to the gas valve 300 can be performed independently. That is, when the base structure 220 moves to any position, the movement of the knob cover 210 relative to the base structure can be controlled.

[0062] When the knob cover 210 moves from the third position to the fourth position, and the base structure 220 is in the first position, the knob cover 210 will first move relative to the base structure 220 while the base structure 220 remains stationary. Then, when the knob cover 210 moves to the fourth position, the knob cover 210 and the base structure 220 come into contact. At this time, the knob cover 210 continues to move, which will cause the knob cover 210 to drive the base structure 220 to move together along the first direction X, so that the base structure 220 moves from the first direction X to the second position.

[0063] When the base structure 220 is in the first position and the knob cover 210 is in the third position, the protective cover 100 is in a protected state. At this time, both the base structure 220 and the knob cover 210 are at their furthest positions from the gas valve 300, and the gas valve 300 is in the open state. The user does not need to use the gas stove, and the protective cover 100 in this protected state can protect the ignition needle 110. When the base structure 220 is in the first position and the knob cover 210 is in the third position, the protective cover 100 is also in a protected state. At this time, the base structure 220 is at its closest position to the gas valve 300, and the gas valve 300 is in the open state. However, the knob cover is at its furthest position from the base structure 220. At this time, the user is using the gas stove for cooking for a long time, and the protective cover 100 in this protected state can also protect the ignition needle 110.

[0064] Thus, when the base structure 220 is in any position during movement, as long as the knob cover 210 is in the third position, the protective cover 100 is in a protective state. When the base structure 220 is in the second position and the knob cover 210 is in the fourth position, the protective cover 100 is in a working state. At this time, both the base structure 220 and the knob cover 210 are in the position furthest from the gas valve 300, the gas valve 300 is in the open state, and the user is igniting the gas. The protective cover 100 in the working state at this time allows the ignition needle 110 to be exposed for normal ignition.

[0065] In some embodiments, the protective cover 100 has a protective hole 120 extending longitudinally along a first direction X, and the linkage 400 extends longitudinally along a second direction intersecting the first direction X, with the opposite ends of the linkage 400 connected to the knob cover 210 and the protective cover 100, respectively. Specifically, the protective cover 100 is a hollow shell with an inner diameter slightly larger than the outer diameter of the ignition needle 110. The protective cover 100 is sleeved on the outside of the ignition needle 110, with the first direction X parallel to the axial direction of the ignition needle 110, so that the protective cover 100 can move up and down along the protective cover 100. For easy disassembly and maintenance, the protective cover 100 is fixed to the linkage 400 by threads.

[0066] Optionally, a cover guide rail is also provided on the gas cover, extending longitudinally along the first direction X. The protective cover 100 is provided with a sliding groove 222 that corresponds to the cover guide rail, so that the protective cover 100 can be slidably mounted on the cover guide rail, thereby improving the stability and guiding accuracy of the movement of the protective cover 100. In other embodiments, the protective cover 100 can also switch between a protective state and a working state by flipping, and the linkage 400 can also be a crank connecting rod, etc.

[0067] When the knob cover 210 moves in the first direction X, the knob cover 210, through the linkage 400, will drive the protective cover 100 to move together in the first direction X, thereby realizing the extension and retraction of the ignition needle 110 relative to the protective hole 120. Specifically, when the base structure 220 moves from the first position to the second position, and the knob cover 210 is in the third position, i.e., the situation where the ignition needle 110 needs to be protected, the ignition needle 110 retracts into the protective hole 120. Conversely, when the base structure 220 is in the second position and the knob cover 210 is in the fourth position, at least a part of the ignition needle 110 extends out of the protective cover 100 so that the ignition needle 110 can ignite normally.

[0068] In some embodiments, the knob assembly 200 further includes a first elastic element 230, which elastically abuts against the knob cover 210 and the base structure 220. During the movement of the knob cover 210 from the third position to the fourth position, the first elastic element 230 accumulates an elastic force to move the knob cover 210 from the fourth position to the third position. Thus, when the user does not apply an external force in the first direction X to the knob cover 210, there are two possibilities: either the user stops using the gas stove, or the user has already ignited the gas. Both scenarios require protection of the ignition needle 110. In these cases, the knob cover 210 will move to the third position under the action of the elastic element, causing the protective cover 100 to automatically switch to a protective state, thereby protecting the ignition needle 110.

[0069] In some embodiments, a second elastic element 310 is provided inside the gas valve 300. The base structure 220 is used to abut against the second elastic element 310 inside the gas valve 300. During the process of the base structure 220 moving from the first position to the second position, the second elastic element 310 accumulates an elastic force to move the base structure 220 from the second position to the first position. Thus, when the user applies an external force to the knob cover 210, causing the knob cover 210 to move along the first direction X, the knob cover 210 will first move from the third position to the fourth position. After the user continues to apply external force, the knob cover 210 will drive the base structure 220 to move from the first position to the second position, thereby opening the gas valve 300 and switching the protective cover 100 to the working position to expose the ignition needle 110.

[0070] After the user removes the external force, the second elastic element 310 first drives the base structure 220 and the knob cover 210 to move from the second position to the first position, thereby closing the gas valve 300. Then, the first elastic element 230 drives the knob cover 210 to move from the fourth position to the third position, thereby switching the protective cover 100 to the protection state to protect the ignition needle 110.

[0071] In actual use, users not only need to open and close the gas valve 300, but also need to adjust its opening degree to regulate the gas flow and ultimately adjust the flame size. Therefore, when the knob cover 210 is in the second position, i.e., when the gas valve 300 is open, the knob cover 210 can controllably rotate the base structure 220 around its own axis. The rotation angle of the knob cover 210 around its own axis increases or decreases the opening degree of the gas valve 300, thus adjusting the flame size. Furthermore, the knob cover 210 is rotatably connected to the linkage 400 around its own axis, ensuring that the knob cover 210 does not cause the linkage 400 to rotate during rotation, allowing the knob cover 210 to properly adjust the gas flow of the gas valve 300. It should be noted that the method of adjusting the gas valve 300 opening by rotating the base structure 220 can be the same as the existing method for adjusting the flame size in gas stoves, which will not be elaborated upon here.

[0072] Specifically, see Figure 5 and Figure 6 The knob cover 210 is provided with a knob limiting groove 211, which has two limiting walls 212 spaced apart in the direction of the knob assembly 200. The insertion part 410 is disposed between the two limiting walls 212. When the knob cover 210 rotates, the insertion part 410 can move within the knob limiting groove 211, thereby preventing the knob cover 210 from driving the linkage 400 to rotate. When the knob cover 210 moves in the first direction X, the two limiting walls 212 can drive the insertion part 410 to move in the first direction X, thereby realizing that the linkage 400 moves together with the knob cover 210 in the first direction X. It is understood that in some other embodiments, the knob cover 210 may also have an insertion part 410 and the linkage 400 may have a knob limiting groove 211.

[0073] Furthermore, in addition to the insertion part 410 on the linkage 400, the insertion part 410 is also provided with an insertion hole 420 extending along the first direction X. The portion of the knob cover 210 with the knob limiting groove 211 passes through the insertion hole 420, and the edge of the insertion hole 420 is located within the knob limiting groove 211. Thus, even if the knob cover 210 rotates 360° around itself, the knob limiting groove 211 will also rotate 360° around the edge of the insertion hole 420, effectively increasing the rotation angle of the knob cover 210. At the same time, a portion of the base structure 220 passes through the insertion hole 420, so that the base structure 220 can be mounted on the gas valve 300 via the linkage 400.

[0074] In some embodiments, the knob cover 210 is provided with a limiting portion 213 and a limiting hole 221 extending longitudinally along a first direction X. The limiting portion 213 passes through the limiting hole 221 and has a knob limiting groove 211, so that the limiting portion 213 can be rotatably connected to the linkage 400 around the axis of the knob cover 210. Furthermore, when the knob cover 210 rotates, the engagement between the limiting portion 213 and the inner wall of the limiting hole 221 allows the knob cover 210 to drive the base structure 220 to rotate together. Optionally, both the limiting portion 213 and the limiting hole 221 are two in number, symmetrically arranged on both sides of the axis of the base structure 220. Each limiting portion 213 passes through one of the limiting holes 221, and each limiting portion 213 has a knob limiting groove 211.

[0075] Furthermore, the inner wall of the limiting hole 221 is recessed to form a groove 222 extending longitudinally along the first direction X. The limiting part 213 slides in conjunction with the groove 222 so that the knob cover 210 can slide more smoothly in the first direction X through the cooperation of the limiting part 213 and the groove 222. At the same time, it can also increase the contact area between the knob cover 210 and the base structure 220, so that the knob cover 210 drives the base structure 220 to rotate more smoothly.

[0076] In some embodiments, when the base structure 220 is in the second position, during the rotation of the knob cover 210 around its own axis, the knob cover 210 includes an ignition position. When the knob cover 210 is in the ignition position, the base structure 220 is movable relative to the gas valve 300 along the first direction X. When the knob cover 210 rotates to the ignition position, the gas valve 300 prevents the gas valve 300 from moving towards the first position along the first direction X. In actual use, when the user presses the knob cover 210, the knob cover 210 moves the base structure 220 to the first position. At this time, the knob cover 210 is in the ignition position, so that the ignition needle 110 can discharge and ignite. It can be understood that the method by which the knob cover 210 drives the ignition needle 110 to ignite can adopt the method of existing gas stoves, which will not be described in detail here. Once ignition is complete, the knob cover 210 can be rotated to move it away from the ignition position. This allows adjustment of the gas valve 300's opening to control the flame size, and also prevents the gas valve 300 from closing due to the base structure 220 resetting under the action of the second elastic element 310. After cooking is complete, rotating the knob cover 210 back to the ignition position will cause the base structure 220 to automatically move to the first position via the second elastic element 310, automatically closing the gas valve 300 and extinguishing the flame.

[0077] Specifically, in some embodiments, see [link to relevant documentation]. Figure 6 , Figure 7 and Figure 8 The base structure 220 includes a knob base 223 and a valve stem 224. A knob cover 210 is fitted onto the knob base 223. One end of the valve stem 224 has a slot 226 to allow the knob base 223 and valve stem 224 to be fixedly connected by insertion or other means. The other end of the valve stem 224 is inserted into the limiting end cover 320 of the gas valve 300, and the portion of the valve stem 224 located within the gas valve 300 is provided with a limiting block 225. (See reference...) Figure 9 The gas valve 300 includes a limiting end cap 320, on which an end cap limiting groove 330 is provided. A limiting block 225 is located on the side of the limiting end cap 320 away from the knob cover 210 in the first direction X, that is, the limiting block 225 can be below the limiting end cap 320, so that the limiting block 225 can move downward together with the base structure 220 under the action of external force.

[0078] When the base structure 220 moves to the first position, the limiting block 225 is located inside the end cap limiting groove 330. The end cap limiting groove 330 prevents the limiting block 225 from rotating around the axis of the base structure 220. At this time, the user cannot rotate the knob cover 210, but can only control the knob cover 210 to move in the first direction X. When the base structure 220 moves to the first position, the limiting block 225 is located outside the end cap limiting groove 330. At this time, the knob cover 210 can drive the base structure 220 and the limiting block 225 to rotate, so as to adjust the flow of the gas valve 300.

[0079] The following is based on the first direction X being the up and down direction, and combined with... Figure 1 The working process of the ignition knob device in the embodiments of this application is described as follows:

[0080] In the initial state, the knob cover 210 is in the third position, the base structure 220 is in the first position, and at this time the knob cover 210 is still in the off position relative to the gas valve 300, the protective cover 100 is in the protective position, and the ignition needle 110 is located in the protective hole 120.

[0081] When using the gas stove, the user presses down on the knob cover 210. The knob cover 210 moves from the third position to the fourth position. At this time, the knob cover 210, through the linkage 400, causes the protective cover 100 to descend, allowing the ignition needle 110 to gradually extend out of the protective hole 120. Afterward, the user continues to press the knob cover 210, causing the base structure 220 to continue moving downward, from the first position to the second position. At this time, the gas valve 300 opens, and the discharge needle extends out of the protective hole 120 to ignite the gas.

[0082] Afterwards, the user continues to press down, at which point the limit block 225 disengages from the end cover limit groove 330. Then, the user can rotate the knob cover after the gas is ignited. The knob cover synchronously drives the base structure 220 to rotate, thereby adjusting the opening of the gas valve 300 and thus adjusting the flame size.

[0083] When the gas stove is burning stably under ideal firepower, the user releases the knob cover 210, causing the knob cover 210 to leave the fire-off position. Under the action of the first elastic element 230, the knob cover 210 drives the linkage element 400 to move upward, causing the discharge needle to retract into the protection hole 120, thus protecting the protection needle.

[0084] When turning off the flame, there is no need to press the knob cover 210. Simply turn the knob cover 210 to the flame-off position. Under the action of the second elastic element 310, the base structure 220 returns to the first position, and the flame-off action is completed.

[0085] As can be seen from the above, the user does not need to operate the protective cover 100 separately during the ignition and ignition process. The protective cover 100 can automatically switch between the protection state and the working state, which effectively prevents the user from forgetting to open the protective cover 100 when igniting the fire or forgetting to close the protective cover 100 when cooking is finished.

[0086] The above-mentioned ignition knob device has at least the following advantages:

[0087] Through a linkage mechanism, as the knob assembly 200 controls the gas valve 300 to switch from the off state to the open state, the knob assembly 200, via the linkage member 400, drives the protective cover 100 to switch from the protected state to the working state. This achieves automatic external leakage of the ignition needle 110 during ignition, preventing the user from forgetting to open the protective cover 100 and affecting the ignition effect. Simultaneously, as the knob assembly 200 controls the gas valve 300 to switch from the open state to the off state, the knob assembly 200, via the linkage member 400, drives the protective cover 100 to switch from the working state to the protected state. This automatically protects the ignition needle 110 when the gas stove is not in use, preventing dirt from directly contacting the ignition needle 110 and protecting it from impact deformation.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An ignition knob device, characterized in that, The ignition knob device includes: The protective cover (100) has a protective state that covers the ignition needle (110) and an operating state that exposes at least a portion of the ignition needle (110); A knob assembly (200), movably mounted on a gas valve (300), is used to control the gas valve (300) to switch between an open and closed state; and Linkage component (400) connects the knob assembly (200) and the protective cover (100). During the process of the knob assembly (200) controlling the gas valve (300) to switch from the disconnected state to the open state, the knob assembly (200) drives the protective cover (100) to switch from the protected state to the working state via the linkage (400).

2. The ignition knob device according to claim 1, characterized in that, During the process of the knob assembly (200) controlling the gas valve (300) to switch from the open state to the closed state, the knob assembly (200) drives the protective cover (100) to switch from the working state to the protective state via the linkage (400).

3. The ignition knob device according to claim 1, characterized in that, While maintaining the gas valve (300) in the open state, the knob assembly (200) can also controllably drive the protective cover (100) from the working state to the protective state via the linkage (400).

4. The ignition knob device according to any one of claims 1-3, characterized in that, The knob assembly (200) includes a knob cover (210) and a base structure (220). The base structure (220) is movably disposed on the gas valve (300) along a first direction (X). During movement, the base structure (220) has a first position and a second position relative to the gas valve (300). When the base structure (220) is in the first position, the gas valve (300) is in the off state. When the base structure (220) is in the second position, the gas valve (300) is in the open state. The knob cover (210) is movably disposed on the side of the base structure (220) away from the gas valve (300) along the first direction (X). The linkage (400) connects the knob cover (210) and the protective cover (100). The knob cover (210) includes a third position and a fourth position during its movement relative to the base structure (220). The fourth position is located on the side of the third position facing the gas valve (300). When the knob cover (210) is in the fourth position, the knob cover (210) abuts against the base structure (220). When the base structure (220) is in any position during movement and the knob cover (210) is in the third position, the protective cover (100) is in the protective state. When the base structure (220) is in the second position and the knob cover (210) is in the fourth position, the protective cover (100) is in the working state.

5. The ignition knob device according to claim 4, characterized in that, The protective cover (100) has a protective hole (120) extending longitudinally along a first direction (X), the linkage (400) extends longitudinally along a second direction intersecting the first direction (X), and the two opposite ends of the linkage (400) are respectively connected to the knob cover (210) and the protective cover (100). When the base structure (220) is in any position during movement and the knob cover (210) is in the third position, the ignition needle (110) retracts into the protective hole (120). When the base structure (220) is in the second position and the knob cover (210) is in the fourth position, at least a portion of the ignition needle (110) extends out of the protective cover (100).

6. The ignition knob device according to claim 4, characterized in that, The knob assembly (200) further includes a first elastic element (230), which elastically abuts against the knob cover (210) and the base structure (220), and accumulates an elastic force for moving the knob cover (210) from the third position to the fourth position during the movement of the knob cover (210) from the fourth position to the third position.

7. The ignition knob device according to claim 4, characterized in that, The base structure (220) is used to abut against the second elastic element (310) in the gas valve (300), and during the process of the base structure (220) moving from the first position to the second position, the second elastic element (310) accumulates an elastic force for causing the base structure (220) to move from the second position to the first position.

8. The ignition knob device according to claim 4, characterized in that, When the base structure (220) is in the second position, the knob cover (210) can be controlled to drive the base structure (220) to rotate around its own axis, and the knob cover (210) is rotatably connected to the linkage (400) around its own axis.

9. The ignition knob device according to claim 8, characterized in that, An insertion part (410) is provided on one of the knob cover (210) and the linkage (400), and a knob limiting groove (211) is provided on the other. The knob limiting groove (211) has two limiting walls (212) spaced apart in the direction of the knob assembly (200), and the insertion part (410) is located between the two limiting walls (212).

10. The ignition knob device according to claim 9, characterized in that, The linkage (400) is provided with the insertion part (410), the insertion part (410) is provided with the insertion hole (420) that extends through along the first direction (X), the part of the knob cover (210) having the knob limiting groove (211) passes through the insertion hole (420), and the edge of the insertion hole (420) is located in the knob limiting groove (211).

11. The ignition knob device according to claim 9, characterized in that, The knob cover (210) is provided with a limiting part (213), and the base structure (220) is provided with a limiting hole (221) extending along the first direction (X). The limiting part (213) passes through the limiting hole (221), and the limiting part (213) is rotatably connected to the linkage (400) around the axis of the knob cover (210).

12. The ignition knob device according to claim 11, characterized in that, The inner wall of the limiting hole (221) is recessed to form a sliding groove (222) extending longitudinally along the first direction (X), and the limiting part (213) slides in cooperation with the sliding groove (222).

13. The ignition knob device according to claim 4, characterized in that, When the base structure (220) is in the second position, during the process of the knob cover (210) driving the base structure (220) to rotate around its own axis, the knob cover (210) includes an ignition position. When the knob cover (210) is in the ignition position, the base structure (220) is movable relative to the gas valve (300) along the first direction (X). When the knob cover (210) rotates to avoid the ignition position, the gas valve (300) prevents the gas valve (300) from moving towards the first position along the first direction (X).

14. The ignition knob device according to claim 13, characterized in that, The gas valve (300) includes a limiting end cap (320), on which an end cap limiting groove (330) is provided. The portion of the base structure (220) located inside the gas valve (300) has a limiting block (225). The limiting block (225) is located on the side of the limiting end cap (320) away from the knob cover (210) in the first direction (X). When the base structure (220) is in the first position and the knob cover (210) is in the ignition position, the limiting block (225) is located inside the end cover limiting groove (330), and the end cover limiting groove (330) prevents the limiting block (225) from rotating around the axis of the base structure (220). When the base structure (220) is in the second position, the limiting block (225) is located outside the end cover limiting groove (330).

15. A gas stove, characterized in that, It includes an ignition needle (110), a gas valve (300), and an ignition knob device as described in any one of claims 1-14.

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