Ignition switch and gas valve

Abstract

The utility model discloses an ignition switch and gas valve, this ignition switch includes base, valve rod and switch seat, this valve rod is arranged on the base and can move up and down and rotate relative to the base, the switch seat is installed on the base and the lateral portion of switch seat is provided with elastic contact, wherein, still including the pressure cover of ring structure of being sleeved on the valve rod, when driving valve rod moves down relative to the base, can synchronous drive pressure cover and move down, the outer wall of pressure cover can abut against elastic contact and drive elastic contact to move to switch seat conduction, thereby, through the pressure cover of being sleeved on the valve rod, and utilize the outer wall of pressure cover to abut against elastic contact to trigger switch seat, set up like this, thereby need not open the clamping slot on the valve rod, simple processing, only need to guarantee that the outer wall of pressure cover can abut against elastic contact when pressing down, therefore the requirement to assembly precision is also lower, in addition, when pressure cover long -term wear and tear and lead to trigger failure, only need to replace after taking down pressure cover, operation is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of gas valve technology, and in particular to an ignition switch and a gas valve. Background Technology

[0002] Existing push-button gas valves typically have an ignition trigger, such as a microswitch, connected to the valve body. A valve stem, capable of vertical movement and rotation, passes through the valve body. This valve stem has a groove with a beveled edge, into which the microswitch's contact extends. When the valve stem is pressed downwards, the beveled edge of the groove abuts against the microswitch's contact, triggering the microswitch and thus achieving ignition.

[0003] However, when the above triggering structure is used, since the valve stem has a slot, and after the product is assembled, it is necessary to ensure that the contact of the micro switch extends into the slot, the requirements for the machining and assembly accuracy of the parts are relatively high. In addition, when the valve stem fails to trigger due to long-term wear, the valve stem can only be disassembled and replaced, which is quite troublesome. Utility Model Content

[0004] To overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide an ignition switch. By fitting a pressure sleeve onto the valve stem and using the outer wall of the pressure sleeve to abut against the elastic contact to trigger the switch seat, this design eliminates the need for a slot on the valve stem, simplifying the manufacturing process. Furthermore, it only requires ensuring that the outer wall of the pressure sleeve abuts against the elastic contact when pressed down, thus reducing the requirements for assembly precision. In addition, when the pressure sleeve wears down over a long period and causes triggering failure, it can be replaced simply by removing the pressure sleeve, without needing to replace the valve stem, making operation very convenient.

[0005] The second objective of this utility model is to provide a gas valve, which includes the aforementioned ignition switch.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] An ignition switch, comprising:

[0008] Base;

[0009] A valve stem, which passes through the base and can move up and down and rotate relative to the base;

[0010] A switch holder is mounted on the base; the side of the switch holder is provided with a resilient contact.

[0011] It also includes a ring-shaped pressure sleeve fitted on the valve stem. When the valve stem moves downward relative to the base, the pressure sleeve can move downward simultaneously. The outer wall of the pressure sleeve can abut against the elastic contact and move the elastic contact to connect the switch seat.

[0012] As an optional implementation, the elastic contact includes a contact head with an arc surface formed on the contact head. When the pressure sleeve is moved downward, the outer wall of the pressure sleeve can abut against the arc surface and drive the elastic contact to move to connect the switch base.

[0013] As an optional implementation, the outer wall of the pressure sleeve is provided with a bevel. When the pressure sleeve is moved downward, the bevel can abut against the arc surface and drive the elastic contact to move to conduct the switch base.

[0014] As an optional implementation, the pressure sleeve is formed with a through groove that runs vertically through the valve stem. The inside of the pressure sleeve is provided with an annular groove that is arranged around the outer periphery of the through groove and communicates with the through groove, so that the inside of the pressure sleeve forms a first stepped surface. The annular groove has a bottom opening.

[0015] The valve stem has a groove with a top opening and a side opening to form a second stepped surface. The pressure sleeve is fitted onto the valve stem from top to bottom through the through groove and abuts against the second stepped surface through the first stepped surface to achieve limiting.

[0016] As an optional implementation, it also includes a limiting stop sleeved on the valve stem, the limiting stop being used to abut against the top surface of the pressure sleeve to limit and fix the pressure sleeve.

[0017] As an optional implementation, the outer wall of the valve stem is provided with a groove, and the limiting stop is installed in the groove.

[0018] As an optional implementation, the limiting stop is a retaining ring, which is detachably sleeved in the slot.

[0019] The second objective of this utility model is achieved by the following technical solution:

[0020] A gas valve includes a valve body, a valve core disposed inside the valve body, and the aforementioned ignition switch, wherein:

[0021] The base is mounted on top of the valve body;

[0022] The lower end of the valve stem extends into the valve body and is connected to the valve core;

[0023] The switch base is a micro switch, which is used to connect to the igniter.

[0024] As an optional implementation, the valve body is further provided with a solenoid valve, and the valve body is provided with a push rod for driving the solenoid valve to open or close, and a connecting rod that is driven and cooperates with the push rod. The connecting rod passes through the valve core and is driven and cooperates with the valve stem.

[0025] As an optional implementation, the valve body is further provided with an air inlet, a first air outlet and a second air outlet. The solenoid valve is used to open and close the air inlet, the first air outlet is used to communicate with the outer ring air outlet channel, and the second air outlet is used to communicate with the inner ring air outlet channel.

[0026] In summary, this utility model has the following technical effects:

[0027] The ignition switch of this invention uses a pressure sleeve fitted onto the valve stem, with the outer wall of the pressure sleeve abutting against the elastic contact to trigger the switch seat. This design eliminates the need for a slot on the valve stem, simplifying manufacturing. Furthermore, it only requires ensuring that the outer wall of the pressure sleeve abuts against the elastic contact when pressed down, thus reducing the requirements for assembly precision. In addition, when the pressure sleeve wears down over time, causing triggering failure, it can be replaced simply by removing the pressure sleeve, without needing to replace the valve stem, making operation very convenient. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the ignition switch of this utility model;

[0030] Figure 2 This is an exploded schematic diagram of the ignition switch of this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the pressure sleeve in the ignition switch of this utility model;

[0032] Figure 4 This is a cross-sectional view of the valve stem and pressure pack assembled in the ignition switch of this utility model;

[0033] Figure 5 This is a cross-sectional schematic diagram of the ignition switch of this utility model;

[0034] Figure 6 This is a schematic diagram of the gas valve of this utility model.

[0035] The meanings of the reference numerals in the attached figures are as follows:

[0036] 1. Ignition switch; 11. Base; 111. Mounting groove; 112. Mounting block; 113. Limiting protrusion; 12. Valve stem; 121. Groove; 1211. Second step surface; 122. Slot; 13. Switch base; 131. Elastic contact; 1311. Arc surface; 14. Pressure sleeve; 141. Through groove; 142. Annular groove; 143. First step surface; 144. Inclined surface; 15. Limiting stop; 2. Valve body; 21. Solenoid valve; 22. Air inlet; 23. First air outlet; 24. Second air outlet. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0042] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0043] Example 1

[0044] See Figures 1 to 5 This application first provides an ignition switch 1, including a base 11, a valve stem 12, and a switch seat 13. The base 11 has a vertically penetrating mounting groove 111, and the valve stem 12 passes through the mounting groove 111 and can move up and down and rotate relative to the base 11. The switch seat 13 is mounted on the base 11 and is used to connect with an ignition assembly. The side of the switch seat 13 has a protruding elastic contact 131. It also includes a ring-shaped pressure sleeve 14 fitted on the valve stem 12. The pressure sleeve 14 moves with the valve stem 12. When the valve stem 12 moves downward relative to the base 11, the pressure sleeve 14 moves downward synchronously. The outer wall of the pressure sleeve 14 can abut against the elastic contact 131 and drive the elastic contact 131 to move to conduct the switch seat 13, thereby realizing ignition.

[0045] Therefore, by fitting a pressure sleeve 14 onto the valve stem 12 and using the outer wall of the pressure sleeve 14 to abut against the elastic contact 131 to trigger the switch seat 13, this configuration eliminates the need to create a slot on the valve stem 12, simplifying the manufacturing process. Furthermore, it is only necessary to ensure that the outer wall of the pressure sleeve 14 can abut against the elastic contact 131 when pressed down, thus reducing the requirements for assembly precision. In addition, when the pressure sleeve 14 wears down over a long period and causes triggering failure, the pressure sleeve 14 can be removed and replaced without replacing the valve stem 12, making the operation very convenient.

[0046] In this embodiment, the top of the base 11 is also provided with two mounting blocks 112 arranged at intervals, and the switch base 13 is mounted on the two mounting blocks 112; in addition, the top of the base 11 is also provided with two limiting protrusions 113 arranged at intervals, and a gap is formed between the two limiting protrusions 113 to allow the elastic contact 131 to pass through.

[0047] See Figure 2 , Figure 4 as well as Figure 5 The elastic contact 131 includes a contact head with an arc surface 1311 formed on the contact head. The outer wall of the pressure sleeve 14 is provided with a convex ring, and the lower end of the side wall of the convex ring is provided with an inclined surface 144. When the pressure sleeve 14 is moved downward, the inclined surface 144 can abut against the arc surface 1311 and drive the elastic contact 131 to move to conduct the switch base 13.

[0048] Therefore, by setting an arc surface 1311 on the contact and opening an inclined surface 144 on the outer wall of the pressure sleeve 14, the abutting cooperation between the two can not only drive the elastic contact 131 to move to trigger the switch seat 13, but also reduce the contact friction between the two, making the pressing process smoother, thereby improving the reliability of the triggering of the switch seat 13.

[0049] See Figure 2-4 The pressure sleeve 14 has a through groove 141 that runs vertically through the valve stem 12. The pressure sleeve 14 has an annular groove 142 that is arranged around the outer periphery of the through groove 141 and communicates with the through groove 141, so that the inside of the pressure sleeve 14 forms a first stepped surface 143. The annular groove 142 has a bottom opening. The valve stem 12 has a groove 121 with a top opening and a side opening on its side wall to form a second stepped surface 1211. When the pressure sleeve 14 is fitted onto the valve stem 12 from top to bottom through the through groove 141, the first stepped surface 143 can abut against the second stepped surface 1211 to achieve a limiting position.

[0050] Furthermore, it also includes a limiting stop 15 sleeved on the valve stem 12, which abuts against the top surface of the pressure sleeve 14 to limit and fix the pressure sleeve 14. The outer wall of the valve stem 12 is also provided with a retaining groove 122, and the limiting stop 15 is installed in the retaining groove 122. Preferably, the limiting stop 15 is a retaining spring ring, which is detachably sleeved in the retaining groove 122.

[0051] Therefore, based on the above structure, when it is necessary to assemble the pressure sleeve 14 onto the valve stem 12, simply place the pressure sleeve 14 onto the valve stem 12 from top to bottom and abut against the second step surface 1211 through the first step surface 143 to achieve limiting. Then, install the limiting stop 15 in the slot 122 to abut against the top surface of the pressure sleeve 14 to achieve assembly and fixation of the pressure sleeve 14. Similarly, when it is necessary to disassemble the pressure sleeve 14, simply remove the limiting stop 15 and then remove the pressure sleeve 14 from the valve stem 12. The operation is very convenient and easy to replace.

[0052] Example 2

[0053] See Figure 6 The present invention also provides a gas valve, including a valve body 2, a valve core (not shown in the figure) disposed inside the valve body 2, and an ignition switch 1 as described in the first embodiment above. The base 11 is mounted on the top of the valve body 2; the lower end of the valve stem 12 extends into the valve body 2 and is connected to the valve core; preferably, the switch base 13 is a micro switch, which is connected to the igniter.

[0054] Furthermore, the valve body 2 is also equipped with a solenoid valve 21. Inside the valve body 2 is a push rod (not shown in the figure) for driving the solenoid valve 21 to open or close, and a connecting rod (not shown in the figure) that drives the push rod. The connecting rod passes through the valve core and drives the valve stem 12. Therefore, when the valve stem 12 is pressed, the push rod can be moved via the connecting rod, thereby opening the solenoid valve 21 and allowing gas to enter the valve body 2.

[0055] See Figure 6 The valve body 2 is also provided with an air inlet 22, a first air outlet 23 and a second air outlet 24. The solenoid valve 21 is used to open and close the air inlet 22, the first air outlet 23 is used to communicate with the outer ring air outlet channel, and the second air outlet 24 is used to communicate with the inner ring air outlet channel.

[0056] In summary, this utility model has the following technical effects:

[0057] The ignition switch 1 of this utility model triggers the switch seat 13 by fitting a pressure sleeve 14 onto the valve stem 12 and using the outer wall of the pressure sleeve 14 to abut against the elastic contact 131. This design eliminates the need to create a slot on the valve stem 12, simplifying the manufacturing process. Furthermore, it only requires ensuring that the outer wall of the pressure sleeve 14 abuts against the elastic contact 131 when pressed down, thus reducing the requirements for assembly precision. In addition, when the pressure sleeve 14 wears down over a long period and causes triggering failure, it can be replaced simply by removing the pressure sleeve 14 without replacing the valve stem 12, making the operation very convenient.

[0058] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An ignition switch, characterized in that, include: Base; A valve stem, which passes through the base and can move up and down and rotate relative to the base; A switch holder is mounted on the base; the side of the switch holder is provided with a resilient contact. It also includes a ring-shaped pressure sleeve fitted on the valve stem. When the valve stem moves downward relative to the base, the pressure sleeve can move downward simultaneously. The outer wall of the pressure sleeve can abut against the elastic contact and move the elastic contact to connect the switch seat.

2. The ignition switch according to claim 1, characterized in that: The elastic contact includes a contact head with an arc surface formed on the contact head. When the pressure sleeve is moved downward, the outer wall of the pressure sleeve can abut against the arc surface and move the elastic contact to conduct the switch base.

3. The ignition switch according to claim 2, characterized in that: The outer wall of the pressure sleeve is provided with a bevel. When the pressure sleeve is moved downward, the bevel can abut against the arc surface and drive the elastic contact to move so as to connect the switch base.

4. The ignition switch according to any one of claims 1-3, characterized in that: The pressure sleeve is formed with a through groove that runs vertically through the valve stem. The inside of the pressure sleeve is provided with an annular groove that is arranged around the outer periphery of the through groove and communicates with the through groove, so that the inside of the pressure sleeve forms a first stepped surface. The annular groove has a bottom opening. The valve stem has a groove with a top opening and a side opening to form a second stepped surface. The pressure sleeve is fitted onto the valve stem from top to bottom through the through groove and abuts against the second stepped surface through the first stepped surface to achieve limiting.

5. The ignition switch according to claim 4, characterized in that: It also includes a limiting stop sleeved on the valve stem, the limiting stop being used to abut against the top surface of the pressure sleeve to limit and fix the pressure sleeve.

6. The ignition switch according to claim 5, characterized in that: The outer wall of the valve stem is provided with a groove, and the limiting stop is installed in the groove.

7. The ignition switch according to claim 6, characterized in that: The limiting stop is a retaining ring, which is detachably fitted into the retaining groove.

8. A gas valve, characterized in that, The valve includes a valve body, a valve core disposed inside the valve body, and an ignition switch as described in any one of claims 1-7, wherein: The base is mounted on top of the valve body; The lower end of the valve stem extends into the valve body and is connected to the valve core; The switch base is a micro switch, which is used to connect to the igniter.

9. The gas valve according to claim 8, characterized in that: The valve body is also provided with a solenoid valve. The valve body is provided with a push rod for driving the solenoid valve to open or close, and a connecting rod that is driven and cooperates with the push rod. The connecting rod passes through the valve core and is driven and cooperates with the valve stem.

10. The gas valve according to claim 9, characterized in that: The valve body is also provided with an air inlet, a first air outlet and a second air outlet. The solenoid valve is used to open and close the air inlet. The first air outlet is used to communicate with the outer ring air outlet channel and the second air outlet is used to communicate with the inner ring air outlet channel.

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