Solenoid valve and cooktop comprising same

Abstract

The application discloses an electromagnetic valve and a cooking utensil comprising the same, which comprises a valve shaft, an armature, a buffer and a groove, the armature comprises an upper contact surface, the valve shaft comprises a lower contact surface, the upper contact surface is arranged adjacent to the lower contact surface, the groove is recessed relative to the lower contact surface of the valve shaft, the buffer is arranged in the groove, the upper contact surface is provided with a compression area at a position corresponding to the groove, and the distance between the upper contact surface and the lower contact surface is greater than the distance between the compression area and the buffer. The buffer of the electromagnetic valve is installed in the groove, even if the buffer is aged, falls off, is not installed or the armature is laterally rotated, the lower contact surface of the valve shaft can still cooperate with the upper contact surface of the armature, thereby realizing continuous attraction of the armature and the iron core, ensuring ignition and combustion stability of the cooking utensil, thereby guaranteeing stability and safety of the electromagnetic valve, increasing the service life of the electromagnetic valve and optimizing the use experience of users.

Description

TECHNICAL FIELD

[0001] The present application relates to an electromagnetic valve and a cooking appliance comprising the same. BACKGROUND

[0002] When the gas stove is ignited, the user needs to press down the knob valve body to push the valve shaft, so that the armature of the electromagnetic valve contacts the iron core, and then the current is formed to ignite. After the ignition, the flame burns to the thermocouple head, and the induced electromotive force generated by the thermocouple is loaded on the wire of the electromagnetic valve iron core. The magnetic force overcomes the elastic force of the spring to make the armature and the iron core attract, so that the electromagnetic valve is in an open state. However, since the armature and the iron core are in rigid contact, different users press the knob with different forces. When the pressing force is too large, the push rod will cause the armature to hit the iron core violently, thereby causing the attraction surface of the armature and the iron core to be damaged and have a gap. When the maintenance electromotive force generated by the thermocouple is constant, the scratches or gaps on the surface of the armature and the iron core after the damage will cause the original electromotive force to be unable to maintain the attraction of the armature and the iron core, thereby causing the valve to be unable to maintain the open state. In macro, once the user releases his hand, the gas stove will be extinguished, thereby seriously affecting the user's experience.

[0003] In order to solve the above problems, the existing technology adopts the scheme of shortening the valve shaft part of the electromagnetic valve by a distance, and then adding a buffer rubber ring between the valve shaft and the armature. When the rubber ring is normally installed on the valve shaft, it can buffer the contact between the valve shaft and the armature, so that the contact between the armature and the iron core is also elastic when the armature contacts the iron core, thereby effectively protecting the contact surface of the armature and the iron core. However, with the increase of use time, the rubber ring may be aged, loose, or fall off, or not installed during installation, which will cause a large gap between the armature and the iron core when the valve shaft is pressed to the maximum distance, thereby unable to realize the attraction of the armature and the iron core. Once the user releases his hand, the electromagnetic valve will be closed, and the gas stove will be extinguished. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defect that the armature and the iron core cannot maintain attraction when the rubber ring is aged, falls off, or is missing in the prior art, thereby causing the gas stove to be extinguished when the user releases his hand. The present application provides an electromagnetic valve and a cooking appliance comprising the same.

[0005] The present application solves the above technical problems by the following technical scheme:

[0006] The electromagnetic valve comprises a valve shaft, an armature and a buffer, further comprises a groove, the armature comprises an upper contact surface, the valve shaft comprises a lower contact surface, the upper contact surface is arranged adjacent to the lower contact surface, the groove is arranged recessed relative to the lower contact surface of the valve shaft, the buffer is arranged in the groove, the upper contact surface is provided with a compression area corresponding to the position of the groove, and the distance between the upper contact surface and the lower contact surface is greater than the distance between the compression area and the buffer.

[0007] In the scheme, the above structure is adopted, so that the electromagnetic valve provides buffering for the valve shaft and the armature through the cooperation between the compression area and the buffer during the ignition process, direct rigid contact between the valve shaft and the armature is avoided, and the contact surfaces of the valve shaft and the armature are effectively protected; in addition, the buffer is installed in the groove, and the distance between the lower contact surface of the valve shaft and the upper contact surface of the armature on both sides of the groove does not change, so that the original maximum stroke of the valve shaft is not changed; even if the buffer is aged, falls off, is missing or the armature rotates laterally, the lower contact surface of the valve shaft can still cooperate with the upper contact surface of the armature, so that the armature and the core are continuously attracted, the ignition and combustion of the stove are ensured to be stable, the stability and safety of the electromagnetic valve are ensured, the service life of the electromagnetic valve is increased, and the use experience of the user is optimized.

[0008] Preferably, the compression area is flush with the lower contact surface, and the buffer is partially exposed to the upper contact surface.

[0009] In the scheme, the above structure is adopted, so that when the valve shaft is pressed down, the valve shaft and the armature will first be cooperated by the buffer and the compression area to realize buffering of the pressing force, and then the lower contact surface of the valve shaft and the upper contact surface of the armature are effectively protected, so that the contact surfaces are not damaged to affect the ignition effect of the electromagnetic valve.

[0010] Preferably, the compression area protrudes from the upper contact surface.

[0011] Preferably, the bottom of the buffer is not exposed to the lower contact surface, or the bottom of the buffer is partially exposed to the lower contact surface.

[0012] In the scheme, the above structure is adopted, so that the compression area extends into the groove, so that the buffer can be better contacted, the buffering effect of the electromagnetic valve is further improved, the contact surfaces of the valve shaft and the armature are protected from being worn, and the stability of the electromagnetic valve is improved.

[0013] Preferably, the groove comprises a clamping groove and an inner cavity, the clamping groove limits the buffer in the inner cavity, and at least one spacing space is formed between the buffer and the inner cavity.

[0014] In this solution, the above-mentioned structural form is adopted, which expands the space on both sides of the groove. When the buffer is deformed by pressure or heat, the annular cavity can serve as a release area for the deformation of the buffer, thereby effectively preventing the buffer from being damaged by long-term compression, making it less prone to aging, damage, and detachment, and thus extending the service life of the buffer.

[0015] Preferably, the buffer includes a buffer body and a limiting portion protruding from the buffer body, and the slot includes a slot body and a slot opening formed on the slot body, wherein the limiting portion enters the inner cavity through the slot opening, and the slot body restricts the limiting portion within the inner cavity.

[0016] In this solution, the above-mentioned structural form is adopted, which allows the buffer to be directly locked in the groove, making the buffer less likely to fall off or be lost, thereby extending the service life of the buffer.

[0017] Preferably, a through entry channel is formed in the middle of the card slot body, at least a portion of the buffer body has a shape adapted to the entry channel and a size not larger than the entry channel, at least a portion of the buffer body enters the inner cavity through the entry channel, the card slot body protrudes from the side wall of the inner cavity in the radial direction, and the gap space is formed between the side wall of the inner cavity, the upper wall of the inner cavity, the card slot body and the side wall of the buffer body.

[0018] In this solution, the above-mentioned structural form is adopted. By setting a protruding slot body on the side wall of the inner cavity, a boss that can limit the limiting part is formed. At the same time, an interval space is formed between the inner cavity and the slot body to provide deformation release for the buffer. Its structure is simple and compact.

[0019] Preferably, the inner cavity is an annular cavity, and the slot body is annular in shape.

[0020] In this solution, the above-mentioned structural form is adopted, so that after the limiting part enters the inner cavity through the entry channel, it can rotate along the annular inner wall of the inner cavity, thereby locking the limiting part on the slot body, ensuring that the buffer is easy to install and firmly installed.

[0021] Preferably, the solenoid valve includes a side-protruding connector, one end of which is detachably connected to the bottom of the valve shaft, and the other end is engaged with the armature. The groove is an annular groove surrounding the outside of the side-protruding connector.

[0022] In this solution, the above-mentioned structural form is adopted, which makes it easy to attach the armature to the valve shaft, and also facilitates the processing of the groove, simplifying the processing and installation process of the solenoid valve and making its application range wider.

[0023] Preferably, the end of the side-convex connector that is connected to the armature is provided with a protrusion, and the inner side of the armature is provided with a mating connection part, which movably abuts against the protrusion.

[0024] Preferably, the upper surface of the protrusion is arc-shaped, and the surface of the mating connection that contacts the protrusion is also arc-shaped.

[0025] In this solution, the above-mentioned structural form is adopted, so that the armature and the side protrusion connector are connected by mutual cooperation through the arc-shaped surface, which effectively reduces the wear between the armature and the side protrusion connector, and also facilitates the lateral tilting of the armature, thereby better attracting the iron core.

[0026] Preferably, the armature rotates relative to the side-convex connector along the radial direction of the armature, and the upper contact surface abuts against the outer edge of the lower contact surface.

[0027] In this solution, the above-mentioned structure is adopted. When the armature rotates laterally, the outer edge of the lower contact surface of the valve shaft abuts against the upper contact surface of the armature. This effectively limits the lateral tilt of the armature, ensuring that even if the buffer component ages, falls off, or is missing, the tilt angle of the armature will not increase. This will not affect the normal engagement of the armature and the iron core, thus ensuring the stability and safety of the solenoid valve, increasing its service life, and optimizing the user experience.

[0028] The valve shaft includes a riveting part, the armature has a through hole, the riveting part is inserted into the through hole and fixed by flanging riveting, the groove and the lower contact surface are located on the periphery of the riveting part, and the upper contact surface is located on the periphery of the through hole.

[0029] In this solution, the above-mentioned structural form is adopted, which allows the riveting part to be directly connected to the valve shaft. The armature is then hooked onto the riveting part by means of flange riveting, which is more conducive to the connection between the valve shaft and the armature and effectively reduces the installation steps.

[0030] Preferably, the ultimate compression stroke of the buffer is less than the distance between the upper contact surface and the lower contact surface.

[0031] In this solution, the above-mentioned structural form is adopted so that during the normal downward pressing process of the valve shaft, only the compression area and the buffer are in contact, and there is no rigid contact between the upper contact surface and the lower contact surface. This avoids wear on the contact surface between the valve shaft and the armature, protects the internal structure of the solenoid valve, and improves its service life.

[0032] Preferably, the buffer is a rubber ring.

[0033] In addition, the present invention also provides a stove, which includes the above-mentioned solenoid valve.

[0034] The positive and progressive effects of this invention are as follows:

[0035] Through its structural design, this solenoid valve provides cushioning for the valve shaft and armature during ignition by cooperating with the compression zone and buffer component. This avoids direct rigid contact between the valve shaft and armature, effectively protecting their contact surfaces. Furthermore, by installing the buffer component within a groove, the distance between the lower contact surface of the valve shaft and the upper contact surface of the armature remains unchanged on both sides of the groove. This preserves the valve shaft's original maximum stroke. Even if the buffer component ages, falls off, is missing, or the armature rotates laterally, the lower contact surface of the valve shaft can still engage with the upper contact surface of the armature, ensuring continuous engagement between the armature and the core. This guarantees stable ignition and combustion of the stove, thus ensuring the stability and safety of the solenoid valve, increasing its service life, and optimizing the user experience. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the solenoid valve in Embodiment 1 of the present invention.

[0037] Figure 2 for Figure 1 Enlarged view of part of the structure in region A.

[0038] Figure 3 This is a schematic diagram of the armature rotating laterally in Embodiment 1 of the present invention.

[0039] Figure 4 for Figure 1 Enlarged view of part of the structure in region A without buffer.

[0040] Figure 5 This is a schematic diagram of the armature rotating laterally when there is no buffer in Embodiment 1 of the present invention.

[0041] Figure 6 This is a schematic diagram of the structure of the solenoid valve in Embodiment 2 of the present invention.

[0042] Figure 7 for Figure 6Enlarged view of part of the structure in region B.

[0043] Figure 8 This is a schematic diagram of the armature rotating laterally in Embodiment 2 of the present invention.

[0044] Figure 9 for Figure 6 Enlarged view of part of the structure in region B without buffer.

[0045] Figure 10 This is a schematic diagram of the armature rotating laterally when there is no buffer in Embodiment 2 of the present invention.

[0046] Figure 11 This is a schematic diagram of the structure of a solenoid valve in the prior art.

[0047] Figure 12 for Figure 11 Enlarged view of part of the structure in region C.

[0048] Figure 13 This is a schematic diagram of the armature rotating laterally in the prior art.

[0049] Figure 14 for Figure 1 Enlarged view of part of the structure in region C without buffer.

[0050] Figure 15 This is a schematic diagram showing the lateral rotation of the armature in the absence of a buffer in the prior art.

[0051] Figure 16 This is a schematic diagram of the structure of the solenoid valve in Embodiment 3 of the present invention.

[0052] Figure 17 for Figure 16 Enlarged view of part of the structure in region D.

[0053] Figure 18 This is a schematic diagram of the groove structure in Embodiment 3 of the present invention.

[0054] Figure 19 for Figure 16 A schematic diagram showing a partial structure of region D combined with that of Example 2.

[0055] Figure 20 This is a schematic diagram of the installation of the buffer component in Embodiment 3 of the present invention.

[0056] Figure 21 for Figure 16 A cross-sectional view of region D from another angle.

[0057] Explanation of reference numerals in the attached figures:

[0058] Solenoid valve 100

[0059] Valve shaft 1

[0060] Lower contact surface 11

[0061] Groove 12

[0062] Card slot 121

[0063] Inner cavity 122

[0064] Card slot opening 123

[0065] Interval space 124

[0066] Armature 2

[0067] Upper contact surface 21

[0068] Compression area 22

[0069] Connecting part 23

[0070] Buffer 3

[0071] Limiting part 31

[0072] Side-convex connector 4

[0073] Protrusion 41

[0074] Iron core 5

[0075] Riveting part 6 Detailed Implementation

[0076] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0077] Example 1

[0078] like Figures 1 to 5 As shown, this embodiment discloses a solenoid valve 100, which includes a valve shaft 1, an armature 2, and a buffer 3. The solenoid valve 100 also includes a groove 12. The armature 2 includes an upper contact surface 21, and the valve shaft 1 includes a lower contact surface 11. The upper contact surface 21 and the lower contact surface 11 are arranged adjacent to each other. The groove 12 is recessed relative to the lower contact surface 11 of the valve shaft 1. The buffer 3 is disposed in the groove 12. A compression area 22 is provided at the position corresponding to the upper contact surface 21 and the groove 12. The distance between the upper contact surface 21 and the lower contact surface 11 is greater than the distance between the compression area 22 and the buffer 3.

[0079] like Figure 2As shown, by creating a groove 12 on the lower contact surface 11 of the valve shaft 1 and placing the buffer 3 in the groove 12, the solenoid valve 100 provides buffering for the valve shaft 1 and armature 2 during ignition through the cooperation between the compression region 22 and the buffer 3, avoiding direct rigid contact between the valve shaft 1 and the armature 2, and effectively protecting the contact surface between the valve shaft 1 and the armature 2. Furthermore, by installing the buffer 3 in the groove 12, the distance between the lower contact surface 11 of the valve shaft 1 and the upper contact surface 21 of the armature 2 on both sides of the groove 12 remains unchanged, thus not altering the original maximum stroke of the valve shaft 1. Figures 3 to 5 As shown, even if the buffer 3 ages, falls off, is missing, or the armature 2 rotates laterally, the lower contact surface 11 of the valve shaft 1 can still cooperate with the upper contact surface 21 of the armature 2, thereby achieving continuous attraction between the armature 2 and the iron core 5, ensuring stable ignition and combustion of the stove, thus guaranteeing the stability and safety of the solenoid valve 100, increasing its service life, and optimizing the user experience.

[0080] Specifically, the compression area 22 is flush with the lower contact surface 11, and part of the buffer 3 is exposed on the upper contact surface 21.

[0081] like Figure 2 As shown, the compression area 22 is flush with the lower contact surface 11, and the bottom part of the buffer 3 is exposed on the upper contact surface 21. When the valve shaft 1 is pressed down, the valve shaft 1 and the armature 2 will first cooperate with each other through the buffer 3 and the compression area 22 to buffer the downward pressure, thereby effectively protecting the lower contact surface 11 of the valve shaft 1 and the upper contact surface 21 of the armature 2, and avoiding damage to the contact surface that would affect the ignition effect of the solenoid valve 100.

[0082] Specifically, such as Figures 1 to 3 As shown, the solenoid valve 100 includes a side-protruding connector 4. One end of the side-protruding connector 4 is detachably connected to the bottom of the valve shaft 1, and the other end is locked to the armature 2. The groove 12 is an annular groove 12, which surrounds the outside of the side-protruding connector 4.

[0083] like Figure 2 As shown, the armature 2 has an opening at its center for engaging with the side-protruding connector 4. The side-protruding connector 4 is inserted through the opening of the armature 2 and connected to the valve shaft 1, thereby hooking the armature 2 onto the side-protruding connector 4. This facilitates the installation of the armature 2 and also makes it easier to process the groove 12, simplifying the processing and installation of the solenoid valve 100 and making it more widely applicable.

[0084] Specifically, such as Figure 2 As shown, the end of the side-convex connector 4 connected to the armature 2 is provided with a protrusion 41, and the inner side of the armature 2 is provided with a mating connection part 23, which movably abuts against the protrusion 41.

[0085] Specifically, the upper surface of the protrusion 41 is arc-shaped, and the surface of the mating connection 23 that contacts the protrusion 41 is also arc-shaped.

[0086] like Figure 2 and Figure 3 As shown, the contact surfaces of the protrusion 41 and the mating connection 23 are both set to arc shape, so that the armature 2 and the side protrusion connector 4 are connected to each other through the arc surface, which effectively reduces the wear between the armature 2 and the side protrusion connector 4, and also facilitates the side tilting of the armature 2, thereby better attracting the iron core 5.

[0087] Specifically, such as Figure 3 As shown, along the radial direction of the armature 2, the armature 2 rotates relative to the side protrusion connector 4, and the upper contact surface 21 abuts against the outer edge of the lower contact surface 11.

[0088] like Figure 3 As shown, when the armature 2 rotates laterally, the outer edge of the lower contact surface 11 of the valve shaft 1 abuts against the upper contact surface 21 of the armature 2, so that the lower contact surface 11 effectively limits the lateral tilt of the armature 2. This ensures that the solenoid valve 100 can function properly even in cases of aging, detachment, or missing parts of the buffer 3. Figure 4 and Figure 5 As shown, the tilt angle of armature 2 will not increase, thus not affecting the normal engagement of armature 2 and iron core 5, ensuring the stability and safety of the solenoid valve 100, increasing its service life, and optimizing the user experience.

[0089] In the existing technology, see specific references. Figures 11 to 15 When buffer 3 is installed, if armature 2 tilts to the side, it will severely compress buffer 3, such as... Figure 13 As shown, this leads to an increased lateral tilt of armature 2; furthermore, if the buffer component 3 is aged, detached, or missing, such as... Figure 14 and 15 As shown, during the downward pressing of valve shaft 1, the distance originally intended for installing buffer 3 is increased. This results in the armature 2 not being able to be pushed to the position where it is continuously engaged with the iron core 5 even when valve shaft 1 is pressed to its maximum stroke, causing the engine to shut off when the user releases their hand, thus affecting the user experience. Therefore, the structure disclosed in this embodiment is simple and easy to manufacture. Furthermore, even if buffer 3 ages, falls off, or is missing, the tilt angle of armature 2 will not increase, and the maximum downward pressing stroke of valve shaft 1 required for continuous engagement between armature 2 and iron core 5 will not increase, thereby optimizing the user experience.

[0090] Specifically, the ultimate compression stroke of the buffer 3 is less than the distance between the upper contact surface 21 and the lower contact surface 11.

[0091] In this embodiment, the limit compression stroke of the buffer 3 is limited so that during the normal downward pressing process of the valve shaft 1, only the compression area 22 and the buffer 3 are in contact, and there is no rigid contact between the upper contact surface 21 and the lower contact surface 11. This avoids wear on the contact surface between the valve shaft 1 and the armature 2, protects the internal structure of the solenoid valve 100, and improves its service life.

[0092] Specifically, in this embodiment, the buffer 3 is a rubber ring. In other embodiments, other materials with buffering effect, such as springs and elastic sheets, can also be used as the buffer 3. Therefore, the specific material of the buffer 3 is not limited to the rubber ring disclosed in this embodiment.

[0093] In addition, this embodiment also discloses a stove, which includes the solenoid valve 100 described above.

[0094] Example 2

[0095] like Figures 6 to 10 As shown, the specific structure of the solenoid valve 100 disclosed in this embodiment is basically the same as that in Embodiment 1. The similarities will not be repeated. The differences are as follows:

[0096] like Figure 7 and Figure 8 As shown, the compression region 22 protrudes from the upper contact surface 21.

[0097] The bottom of the buffer 3 is not exposed on the lower contact surface 11, or the bottom part of the buffer 3 is exposed on the lower contact surface 11.

[0098] As can be seen from the figure, the bottom of the buffer 3 is not exposed on the lower contact surface 11, but protrudes from the upper contact surface 21 through the compression area 22, so that the compression area 22 extends into the groove 12, thereby making better contact with the buffer 3, further improving the buffering effect of the solenoid valve 100, protecting the contact surface of the valve shaft 1 and the armature 2 from wear, and improving the stability of the solenoid valve 100.

[0099] In other embodiments, even if the bottom part of the buffer 3 is exposed on the lower contact surface 11, it can still cooperate with the compression area 22. Therefore, it needs to be specifically set according to the actual interval distance and the compression stroke of the buffer 3.

[0100] Example 3

[0101] like Figures 16 to 21 As shown, the specific structure of the solenoid valve 100 disclosed in this embodiment is basically the same as that in Embodiment 1 and Embodiment 2. The similarities will not be repeated. The differences are as follows:

[0102] Specifically, such asFigure 17 , Figure 18 , Figure 20 and Figure 21 As shown, the groove 12 includes a slot 121 and an inner cavity 122. The slot 121 restricts the buffer 3 in the inner cavity 122, and at least one gap space 124 is formed between the buffer 3 and the inner cavity 122.

[0103] like Figure 17 As shown, the annular cavity 122 expands the space on both sides of the groove 12, so that when the buffer 3 is deformed by pressure or heat, the annular cavity 122 can serve as a release area for the deformation of the buffer 3, thereby effectively preventing the buffer 3 from being damaged by long-term compression, making it less prone to aging, damage, and detachment, and thus extending the service life of the buffer 3.

[0104] Specifically, such as Figure 20 As shown, the buffer 3 includes a buffer body and a limiting part 31 protruding from the buffer body. The slot 121 includes a slot body and a slot opening 123 formed on the slot body. The limiting part 31 enters the inner cavity 122 through the slot opening 123, and the slot body restricts the limiting part 31 within the inner cavity 122. This allows the buffer 3 to be directly engaged in the groove 12, making the buffer 3 less likely to fall off or be lost, thereby extending the service life of the buffer 3.

[0105] Specifically, such as Figure 20 and Figure 21 As shown, a through entry channel is formed in the middle of the card slot body. At least a part of the buffer body is adapted to the shape of the entry channel and its size is not larger than the entry channel. At least a part of the buffer body enters the inner cavity 122 through the entry channel. The card slot body protrudes from the side wall of the inner cavity 122 in the radial direction. The gap space 124 is formed between the side wall of the inner cavity 122, the upper wall of the inner cavity 122, the card slot body and the side wall of the buffer body.

[0106] like Figure 17 and Figure 20 As shown, by providing a protruding slot body on the side wall of the inner cavity 122, a boss that can limit the limiting part 31 is formed. At the same time, a gap space 124 is formed between the inner cavity 122 and the slot body to provide deformation release for the buffer 3. Its structure is simple and compact.

[0107] Specifically, the inner cavity 122 is an annular cavity, and the slot body is also annular in shape. For example... Figure 20 As shown, after the limiting part 31 enters the inner cavity 122 through the entry channel, it can rotate along the annular inner wall of the inner cavity 122, thereby locking the limiting part 31 onto the slot body, ensuring that the buffer 3 is easy to install and firmly installed.

[0108] In addition, such asFigure 19 As shown, the specific structure in this embodiment can also be combined with the second embodiment, that is, the compression area 22 is set to protrude from the upper contact surface 21. When the valve shaft 1 is pressed down, the compression area 22 is inserted into the annular groove 121, so as to better cooperate with the buffer 3.

[0109] In this embodiment, as Figure 17 and Figure 20 As shown, the valve shaft 1 includes a riveting part 6, the armature 2 has a through hole, the riveting part 6 is inserted into the through hole and fixed by flanging riveting, the groove 12 and the lower contact surface 11 are located on the periphery of the riveting part 6, and the upper contact surface 21 is located on the periphery of the through hole.

[0110] like Figure 20 The image shows the riveting part 6 before it is fixed. After installing the buffer 3 and the armature 2, the armature 2 is hooked onto the riveting part 6 by means of flange riveting. (See reference) Figure 17 This design facilitates the connection between the valve shaft and the armature, effectively reducing installation steps.

[0111] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A solenoid valve, comprising a valve shaft, an armature, and a buffer element, characterized in that, The solenoid valve further includes a groove, the armature includes an upper contact surface, the valve shaft includes a lower contact surface, the upper contact surface and the lower contact surface are arranged adjacent to each other, the groove is recessed relative to the lower contact surface of the valve shaft, the buffer is disposed in the groove, the upper contact surface and the groove are provided with a compression area at the position corresponding to the groove, and the distance between the upper contact surface and the lower contact surface is greater than the distance between the compression area and the buffer.

2. The solenoid valve as described in claim 1, characterized in that, The compression area is flush with the upper contact surface, and the buffer portion is exposed on the lower contact surface.

3. The solenoid valve as described in claim 1, characterized in that, The compression area protrudes from the upper contact surface.

4. The solenoid valve as described in claim 3, characterized in that, The bottom of the buffer is not exposed on the lower contact surface, or a portion of the bottom of the buffer is exposed on the lower contact surface.

5. The solenoid valve as described in claim 1, characterized in that, The groove includes a slot and an inner cavity. The slot restricts the buffer in the inner cavity, and at least one gap is formed between the buffer and the inner cavity.

6. The solenoid valve as described in claim 5, characterized in that, The buffer includes a buffer body and a limiting portion protruding from the buffer body. The slot includes a slot body and a slot opening formed on the slot body. The limiting portion enters the inner cavity through the slot opening, and the slot body restricts the limiting portion within the inner cavity.

7. The solenoid valve as described in claim 6, characterized in that, The card slot body has a through entry channel in the middle. At least a portion of the buffer body has a shape that matches the entry channel and a size that is not larger than the entry channel. At least a portion of the buffer body enters the inner cavity through the entry channel. The card slot body protrudes from the side wall of the inner cavity in the radial direction. The gap space is formed between the side wall of the inner cavity, the upper wall of the inner cavity, the card slot body, and the side wall of the buffer body.

8. The solenoid valve as described in claim 6, characterized in that, The inner cavity is an annular cavity, and the slot body is annular in shape.

9. The solenoid valve as described in claim 1, characterized in that, The solenoid valve includes a side-protruding connector, one end of which is detachably connected to the bottom of the valve shaft, and the other end is engaged with the armature. The groove is an annular groove surrounding the outside of the side-protruding connector.

10. The solenoid valve as described in claim 9, characterized in that, The side-convex connector has a protrusion at one end connected to the armature, and a mating connection is provided on the inner side of the armature, the mating connection being movably abutting against the protrusion.

11. The solenoid valve as described in claim 10, characterized in that, The upper surface of the protrusion is arc-shaped, and the surface of the mating connection that contacts the protrusion is also arc-shaped.

12. The solenoid valve as described in claim 9, characterized in that, Along the radial direction of the armature, the armature rotates relative to the side protrusion connector, and the upper contact surface abuts against the outer edge of the lower contact surface.

13. The solenoid valve as described in claim 1, characterized in that, The valve shaft includes a riveting part, the armature has a through hole, the riveting part is inserted into the through hole and fixed by flanging riveting, the groove and the lower contact surface are located on the periphery of the riveting part, and the upper contact surface is located on the periphery of the through hole.

14. The solenoid valve as claimed in claim 1, characterized in that, The ultimate compression stroke of the buffer is less than the distance between the upper contact surface and the lower contact surface.

15. The solenoid valve as described in claim 1, characterized in that, The buffer is a rubber ring.

16. A stove, characterized in that, The cooktop includes a solenoid valve as described in any one of claims 1-15.

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