A connection structure for a dual-coil solenoid valve and a thermocouple

Abstract

This invention discloses a connection structure for a dual-coil solenoid valve and a thermocouple, comprising: a connecting body, two opening and closing snap-fit ​​structures, and two auxiliary positioning structures. Each opening and closing snap-fit ​​structure includes: a first connecting portion connected to the connecting body, a first plate-shaped structure connected to the first connecting portion, and two claws located at the upper end of the first plate-shaped structure. The first connecting portion forms a fulcrum at the middle of the first plate-shaped structure to allow the upper / lower end of the first plate-shaped structure to swing obliquely relative to the axial direction of the connecting body. Each auxiliary positioning structure includes: a second connecting portion connected to the connecting body and a second plate-shaped structure connected to the second connecting portion. The upper and lower surfaces of the first connecting portion of this invention are both arc-shaped to reduce stress concentration and to press and limit the pressing portion, preventing breakage. This invention employs a claw connection similar to a right-angled inverted buckle to ensure connection strength.

Description

Technical Field

[0001] This invention relates to the technical field of connection devices, and more particularly to a connection structure for a dual-coil solenoid valve and a thermocouple. Background Technology

[0002] A gas solenoid valve is a safety emergency shut-off device for gas pipelines. It can be connected to a gas leak alarm system or to fire protection and other intelligent alarm control terminal modules to achieve automatic / manual emergency shut-off of the gas supply on-site or remotely, ensuring gas safety. The solenoid valve will automatically close in the event of accidental flameout or harmful strong vibration. Commercially available gas flameout protection devices mainly consist of a thermocouple connection, a solenoid valve connection, and a thermocouple assembly. The solenoid valve connection includes a connecting bracket and a pin assembly. The thermocouple assembly can generate a millivolt-level thermoelectric potential in a flame. Simultaneously, the solenoid valve connection, installed in the valve seat, connects and conducts with the thermocouple connection. Under the action of the thermoelectric potential, the solenoid valve remains in the energized state, thus keeping the gas supply on. The thermocouple assembly includes a temperature-sensing head element and a temperature-sensing shell. The temperature-sensing head element must always be electrically connected to the pin assembly in the solenoid valve connection, and the temperature-sensing shell must always be electrically connected to the connecting bracket, thus forming a current loop.

[0003] Chinese invention patent authorization announcement numbers CN111520523A, CN111520524A, and CN111520525A all disclose different forms of connection structures between dual-coil solenoid valves and thermocouples. However, the technologies disclosed in the above patents all adopt a relatively simple connection structure in the process of connecting with thermocouples, lacking a guiding component.

[0004] Secondly, none of the technologies disclosed in the aforementioned patents involve specific research on the structure, materials, and dimensions of the connection. The technologies disclosed in the aforementioned patents all use a clamping method to connect to the thermocouple. If the design of the structure and dimensions of this method is unreasonable, it will result in insufficient pull-out force, which will not meet the usage requirements. During long-term use, the connection will often fall off due to contact or other reasons, leading to problems such as disconnection. If the material is not selected properly, it will result in the material becoming soft, leading to a reduction in pull-out force, and may also cause breakage and other adverse phenomena. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a connection structure for a dual-coil solenoid valve and a thermocouple.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A connection structure for a dual-coil solenoid valve and a thermocouple, comprising:

[0008] A connecting body, the connecting body having an axial direction and four sides;

[0009] Two opening and closing snap-fit ​​structures are respectively provided on two of the sides of the connecting body;

[0010] Each of the opening and closing latching structures includes: a first connecting part connected to the connecting body, a first plate-shaped structure connected to the first connecting part, and two claws disposed at the upper end of the first plate-shaped structure, wherein the first connecting part and the middle part of the first plate-shaped structure are connected, the first plate-shaped structure extends along the axial direction of the connecting body, the upper end and the lower end of the first plate-shaped structure both protrude from the first connecting part, and the first connecting part forms a fulcrum at the middle part of the first plate-shaped structure to allow the upper end / lower end of the first plate-shaped structure to swing tilted relative to the axial direction of the connecting body;

[0011] Two auxiliary positioning structures are respectively disposed on the other two sides of the connecting body;

[0012] Each of the auxiliary positioning structures includes: a second connecting part connected to the connecting body, and a second plate-shaped structure connected to the second connecting part, wherein the lower end of the second plate-shaped structure is connected to the second connecting part, and the second plate-shaped structure extends along the axial direction of the body.

[0013] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, in each of the opening and closing snap-fit ​​structures, two claws are respectively disposed on both sides of the upper end of the first plate-shaped structure, the two claws protrude from the first plate-shaped structure along the radial direction of the connecting body, and there is a gap between the two claws;

[0014] A first groove suitable for mold separation is formed between the two claws along the axial direction of the connecting body.

[0015] In the aforementioned connection structure of the dual-coil solenoid valve and thermocouple, in each of the opening and closing snap-fit ​​structures, the first plate-like structure is sequentially provided with the following components from one end to the other along the axial direction of the connecting body:

[0016] Thick-walled portion, thin-walled portion, and the claw;

[0017] The first connecting portion is connected to the thick-walled portion, the thin-walled portion is elastically deformable relative to the thick-walled portion and is used to operably accommodate at least a portion of the solenoid valve, and the thick-walled portion and the thin-walled portion are connected by a first inclined surface.

[0018] In the above-described connection structure of the dual-coil solenoid valve and thermocouple, the thickness of the first plate-like structure at the first groove is less than the thickness of the first plate-like structure at the thin-walled portion.

[0019] The end face of the first groove is also provided with a rounded chamfer;

[0020] One of the claws, the rounded chamfer, and the other claw form an arc along the radial direction of the connecting body.

[0021] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, each of the opening and closing snap-fit ​​structures includes two first connecting parts, and both first connecting parts are connected to the middle part of the first plate structure.

[0022] The upper and lower surfaces of each of the first connecting parts are curved surfaces.

[0023] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, a limiting block is provided at the lower end of the first plate-shaped structure of each of the opening and closing snap-fit ​​structures facing the connection body.

[0024] The limiting block can be operably abutted against the side wall of the connecting body or separated from the side wall of the connecting body;

[0025] The limiting block is integrally connected to the first plate-shaped structure, fixedly connected separately, or fixedly connected in a detachable manner.

[0026] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, the lower end of the first plate-shaped structure of each of the opening and closing snap-fit ​​structures is provided with a pressing part on the side opposite to the connecting body, and the pressing part is provided with anti-slip texture.

[0027] In the above-described connection structure between the dual-coil solenoid valve and the thermocouple, the upper end of the first plate structure is flush with the upper end of the second plate structure.

[0028] The upper surface of the claw has a second inclined surface, and the upper end of the second plate-like structure has a third inclined surface;

[0029] The claw and the second plate-like structure form an arc along the axial direction of the connecting body.

[0030] In the above-described connection structure of the dual-coil solenoid valve and thermocouple, the upper surface of the second connection part extends radially along the connection body, and the upper surface of the second connection part is an arc surface.

[0031] The lower surface of the second connecting part is radially inclined relative to the connecting body, and the lower surface of the second connecting part is an inclined surface or an arc surface.

[0032] In the above-described connection structure of the dual-coil solenoid valve and thermocouple, a positioning plate for identifying direction is provided on one side of the connection body, and the positioning plate extends to the lower surface of one of the two second connection parts.

[0033] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, the two sides of the connection body with the opening and closing snap-fit ​​structure are arranged in a planar manner, and the two sides of the connection body with the auxiliary positioning structure are arranged in an arc-shaped manner.

[0034] In the above-described connection structure of the dual-coil solenoid valve and thermocouple, the two first connection parts are in the same plane, the two second connection parts are in the same plane, and the first connection parts and the second connection parts are in different planes.

[0035] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, each of the two sides of the connection body with the opening and closing snap-fit ​​structure is provided with a snap-fit ​​part, the snap-fit ​​part protrudes from the side wall, and the snap-fit ​​part is located below the first plate-shaped structure.

[0036] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, the connecting body, the two opening and closing snap-fit ​​structures, and the two auxiliary positioning structures are all made of PBT material.

[0037] In the above-mentioned connection structure of the dual-coil solenoid valve and thermocouple, the thickness of the limiting block is 1mm-1.1mm, the thickness of the first connecting part is 1.4mm-1.6mm, and the arc angle formed by the upper and lower surfaces of the first connecting part is 0.9°-1.1°.

[0038] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0039] (1) The upper and lower surfaces of the first connecting part of the present invention are both arc surfaces to reduce stress concentration and to press and limit the pressing part to prevent breakage.

[0040] (2) The present invention has an opening and closing snap-fit ​​structure and an auxiliary positioning structure. The auxiliary positioning structure helps to clamp and guide the opening and closing snap-fit ​​structure, but has no effect on its disengagement.

[0041] (3) The present invention has reasonably set up structures such as claws, first groove, thick wall part and thin wall part to meet the usage requirements while enhancing the reliability of connection.

[0042] (4) The present invention uses a claw connection similar to a right-angle inverted buckle to ensure connection strength. Attached Figure Description

[0043] Figure 1This is a schematic diagram from a first perspective of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention.

[0044] Figure 2 This is a schematic diagram from a second perspective of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention.

[0045] Figure 3 This is a schematic diagram of the first side view of the connection structure of the dual-coil solenoid valve and thermocouple of the present invention.

[0046] Figure 4 This is a schematic diagram of the second side view of the connection structure of the dual-coil solenoid valve and thermocouple of the present invention.

[0047] Figure 5 This is a schematic top view of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention.

[0048] Figure 6 This is a first-view schematic diagram of the connection structure of the dual-coil solenoid valve and thermocouple of the present invention in use.

[0049] Figure 7 This is a schematic diagram from a second perspective showing the connection structure of the dual-coil solenoid valve and thermocouple of the present invention in use.

[0050] In the attached diagram: 1. Connecting body; 2. Opening and closing snap-fit ​​structure; 3. Auxiliary positioning structure; 4. Positioning plate; 5. Snap-fit ​​part; 6. Double coil solenoid valve; 7. Thermocouple; 21. First connecting part; 221. Thick-walled part; 222. Thin-walled part; 223. First inclined surface; 22. First plate-like structure; 23. Claw; 231. Second inclined surface; 24. First groove; 241. Rounded chamfer; 25. Limiting block; 26. Pressing part; 261. Anti-slip texture; 31. Second connecting part; 32. Second plate-like structure; 321. Third inclined surface; 61. Ring structure. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention. Figure 1 This is a schematic diagram from a first perspective of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention; Figure 2 This is a schematic diagram from a second perspective of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention; Figure 3 This is a schematic diagram of the first side view of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention; Figure 4 This is a schematic diagram of the second side view of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention; Figure 5 This is a schematic top view of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention; Figure 6This is a first-view schematic diagram of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention in use. Figure 7 This is a second-view schematic diagram of the connection structure between the dual-coil solenoid valve and the thermocouple of the present invention in use. See [link / reference]. Figures 1 to 7 The diagram illustrates a preferred embodiment of a connection structure for a dual-coil solenoid valve and a thermocouple, comprising: a connecting body 1, two opening and closing latching structures 2, and two auxiliary positioning structures 3. The connecting body 1 has an axial direction and four sides. The two opening and closing latching structures 2 are respectively disposed on two of the sides of the connecting body 1. Each opening and closing latching structure 2 includes: a first connecting portion 21 connected to the connecting body 1, a first plate-like structure 22 connected to the first connecting portion 21, and two claws 23 disposed at the upper end of the first plate-like structure 22. The first connecting portion 21 and the first plate-like structure 22 are connected at their middle portions, and the first plate-like structure 22 extends along the connecting body 1. Extending axially, the upper and lower ends of the first plate-shaped structure 22 protrude from the first connecting portion 21. The first connecting portion 21 forms a fulcrum at the middle of the first plate-shaped structure 22 to allow the upper / lower ends of the first plate-shaped structure 22 to swing tilted relative to the axial direction of the connecting body 1. Two auxiliary positioning structures 3 are respectively provided on the other two sides of the connecting body 1. Each auxiliary positioning structure 3 includes: a second connecting portion 31 connected to the connecting body 1 and a second plate-shaped structure 32 connected to the second connecting portion 31, wherein the lower end of the second plate-shaped structure 32 is connected to the second connecting portion 31, and the second plate-shaped structure 32 extends along the axial direction of the body.

[0052] In a preferred embodiment, in each opening and closing snap-fit ​​structure 2, two claws 23 are respectively disposed on both sides of the upper end of the first plate-shaped structure 22. The two claws 23 protrude from the first plate-shaped structure 22 in the radial direction of the connecting body 1, and there is a gap between the two claws 23. A first groove 24 suitable for mold separation is opened between the two claws 23 in the axial direction of the connecting body 1.

[0053] In a preferred embodiment, in each opening and closing snap-fit ​​structure 2, the first plate-shaped structure 22 is provided with a thick-walled portion 221, a thin-walled portion 222, and a claw 23 sequentially from one end to the other along the axial direction of the connecting body 1; wherein, the first connecting portion 21 is connected to the thick-walled portion 221, the thin-walled portion 222 is capable of elastic deformation relative to the thick-walled portion 221 and is used to operably accommodate at least a portion of the solenoid valve, and the thick-walled portion and the thin-walled portion 222 are connected by a first inclined surface 223.

[0054] Furthermore, the lower surface of the claw 23 is preferably perpendicular to the inner wall of the thin-walled portion 222 to secure at least a portion of the solenoid valve.

[0055] Furthermore, the first inclined surface 223 serves to accommodate the connection portion of the solenoid valve.

[0056] In a preferred embodiment, the connection part of the solenoid valve is an annular structure 61 with a circular cross-section. The annular structure 61 is engaged with the lower side of the claw 23 to achieve engagement. In a stable engagement state, the annular structure 61 is accommodated in the position of the thin-walled part 222.

[0057] Specifically, by setting the first inclined surface 223, ring structures 61 of different sizes can be adapted. Please refer to [link / reference]. Figure 1 As shown, for example, when the cross-sectional size of the annular structure 61 is small, it can be more loosely accommodated in the thin-walled portion 222, while when the cross-sectional size of the annular structure 61 is large, the first inclined surface 223 can abut against the outer surface of the annular structure 61 for adaptive limiting.

[0058] In a preferred embodiment, the first inclined surface 223 may be a plane or an arc surface recessed toward the first plate-like structure 22.

[0059] In a preferred embodiment, the thickness of the first plate-like structure 22 at the first groove 24 is less than the thickness of the first plate-like structure 22 at the thin-walled portion 222; the end face of the first groove 24 is also provided with a rounded chamfer 241; one claw 23, the rounded chamfer 241, and the other claw 23 form an arc shape along the radial direction of the connecting body 1.

[0060] Furthermore, the arc along the radial direction of the connecting body 1 specifically refers to... Figure 5 From a top-down view, one claw 23, the chamfer, and the other claw 23 form an arc shape.

[0061] Specifically, the upper ends of the two first plate-like structures 22 and the upper ends of the two second plate-like structures 32 together form a roughly circular shape. The inner profile of the upper end of each first plate-like structure 22 is composed of a claw 23, a rounded chamfer 241, and another claw 23. The inner profile of the upper end of each second plate-like structure 32 is composed of the third inclined surface described below.

[0062] It is worth noting that the arc shape along the radial direction of the connecting body 1 has the function of matching the shape of the solenoid valve.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0064] In addition to the above, the present invention also has the following embodiments:

[0065] In a further embodiment of the present invention, each opening and closing snap-fit ​​structure 2 includes two first connecting parts 21, and both first connecting parts 21 are connected to the middle part of the first plate structure 22; the upper surface and the lower surface of each first connecting part 21 are arc surfaces.

[0066] In a preferred embodiment, the limiting block 25 is detachably connected to the first plate-shaped structure 22. For example, the limiting block 25 is connected to the first plate-shaped structure 22 through a dovetail groove and is fixed to the first plate-shaped structure 22 by interference fit or static friction, so as to adjust the width of the limiting block 25 in the radial direction of the connecting body 1 according to actual needs, thereby adjusting the displacement of the lower end of the first plate-shaped structure 22.

[0067] In a further embodiment of the present invention, a limiting block 25 is provided at the lower end of the first plate-shaped structure 22 of each opening and closing snap-fit ​​structure 2 facing the connecting body 1; the limiting block 25 is operable to abut against the side wall of the connecting body 1 or separate from the side wall of the connecting body 1; the limiting block 25 is integrally connected, separately fixedly connected, or detachably fixedly connected to the first plate-shaped structure 22.

[0068] In a further embodiment of the present invention, a pressing part 26 is provided on the side of the lower end of the first plate-shaped structure 22 of each opening and closing snap-fit ​​structure 2 facing away from the connecting body 1, and the pressing part 26 is provided with anti-slip texture 261.

[0069] Preferably, the anti-slip texture 261 has a stepped structure.

[0070] In a further embodiment of the present invention, the upper end of the first plate-shaped structure 22 is flush with the upper end of the second plate-shaped structure 32; the upper surface of the claw 23 has a second inclined surface 231, and the upper end of the second plate-shaped structure 32 has a third inclined surface 321; the claw 23 and the second plate-shaped structure 32 form an arc along the axial direction of the connecting body 1.

[0071] Specifically, the arc shape along the axial direction of the connecting body 1 refers to... Figure 5 From a side view, the second inclined surface 231 of the upper surface of the claw 23 forms an arc shape, and the third inclined surface 321 of the upper end of the second plate-like structure 32 also forms an arc shape.

[0072] Furthermore, such as Figure 6 As shown, the arc along the axial direction of the connecting body 1 guides the solenoid valve. When the solenoid valve moves axially toward the connecting body 1, the second inclined surface 231 and the third inclined surface 321 will separate radially due to the axial force of the solenoid valve movement, thereby driving the upper end of the first plate structure 22 to open to automatically accommodate the solenoid valve. When the solenoid valve enters the thin-walled part 222, they close to lock the solenoid valve, thus realizing the connection between the solenoid valve and the thermocouple 7.

[0073] Conversely, when it is necessary to unlock the solenoid valve and thermocouple 7, the lower end of the first plate structure 22 is operated radially, and the upper end of the first plate structure 22 moves as a lever with the first connecting part 21 as the fulcrum, thereby opening the upper end of the first plate structure 22 and disengaging the solenoid valve, thus achieving unlocking.

[0074] In a further embodiment of the present invention, the upper surface of the second connecting portion 31 extends radially along the connecting body 1, and the upper surface of the second connecting portion 31 is an arc surface; the lower surface of the second connecting portion 31 is inclined relative to the radial direction of the connecting body 1, and the lower surface of the second connecting portion 31 is an inclined surface or an arc surface.

[0075] Furthermore, the radial inclination of the lower surface of the second connecting part 31 relative to the connecting body 1 results in a larger thickness of the second connecting part 31 near the connecting body 1 and a smaller thickness away from the connecting body 1, providing good support for the second plate structure 32.

[0076] In a further embodiment of the present invention, a positioning plate 4 for identifying direction is provided on one side of the connecting body 1, and the positioning plate 4 extends to the lower surface of one of the two second connecting portions 31.

[0077] In a further embodiment of the present invention, the two sides of the connecting body 1 with the opening and closing snap-fit ​​structure 2 are planar, and the two sides of the connecting body 1 with the auxiliary positioning structure 3 are arc-shaped.

[0078] In a further embodiment of the present invention, the two first connecting portions 21 are in the same plane, the two second connecting portions 31 are in the same plane, and the first connecting portions 21 and the second connecting portions 31 are in different planes.

[0079] Specifically, the two first connecting parts 21 are in the same plane, and the two second connecting parts 31 are in the same plane. The first connecting parts 21 and the second connecting parts 31 are in different planes, which means that the two first connecting parts 21 extend in the direction of the first plane, and the two second connecting parts 31 extend in the direction of the second plane. The first plane and the second plane are different planes.

[0080] Furthermore, the first plane here includes the plane where the first connecting part 21 is located and other planes parallel to the plane where the first connecting part 21 is located; the second plane includes the plane where the second connecting part 31 is located and other planes parallel to the plane where the second connecting part 31 is located.

[0081] More specifically, such as Figure 1 As shown, the two first connecting parts 21 are arranged opposite to each other, and the two second connecting parts 31 are also arranged opposite to each other. The two first connecting parts 21 and the two second connecting parts 31 are respectively arranged in a ring array around the connecting body 1 with the connecting body 1 as the axis. The two first connecting parts 21 and the two second connecting parts 31 are arranged at intervals.

[0082] It is worth noting that because the first connecting part 21 and the second connecting part 31 are in different planes, the forces on the first connecting part 21 and the second connecting part 31 do not affect each other. During the connection and release process of the solenoid valve and the thermocouple 7 described above, the first connecting part 21 and the second connecting part 31 do not obstruct each other.

[0083] In a further embodiment of the present invention, a latching part 5 is provided on each of the two sides of the connecting body 1 that are provided with the opening and closing latching structure 2. The latching part 5 protrudes from the side wall and is located below the first plate-shaped structure 22.

[0084] like Figure 7 As shown, the snap-fit ​​part 5 is used to connect with the thermocouple 7. The thermocouple 7 is provided with a mating part, and a hole is opened in the middle of the mating part. The snap-fit ​​part 5, which protrudes from the side wall, passes through the hole opened in the middle of the mating part and hooks the mating part to achieve a tight connection between the snap-fit ​​part 5 and the thermocouple 7.

[0085] In a further embodiment of the present invention, the connecting body 1, the two opening and closing snap-fit ​​structures 2, and the two auxiliary positioning structures 3 are all made of PBT material.

[0086] Furthermore, the connecting body 1, the two opening and closing snap-fit ​​structures 2, and the two auxiliary positioning structures 3 of this device can also be made of other materials, as long as they can achieve low water absorption and ensure long-term use.

[0087] Existing solenoid valves and thermocouple 7 connection sleeves mostly use PA material, which has a certain water absorption. Affected by the environment, the size changes after absorbing water, and the material softens, resulting in a decrease in pull-out force and the possibility of breakage. This device uses PBT material with less water absorption, which can ensure long-term use.

[0088] The stress and deformation of the double-coil solenoid valve 6 held by the limiting blocks 25 and the first connecting part 21 of different sizes were tested in this device. The test results are shown in the table below:

[0089]

[0090]

[0091] The thickness of the limiting block 25 refers to: Figure 3 The thickness of the limiting block 25 shown from left to right is in millimeters;

[0092] The thickness of the first connecting part 21 refers to: Figure 3 The thickness of the first connecting portion 21 shown from top to bottom is in millimeters;

[0093] A rounded corner refers to: such as Figure 3The arc angle formed by the upper and lower surfaces of the first connecting part 21 shown is in degrees;

[0094] The maximum stress refers to the force exerted on the connection between the first connecting part 21 and the connecting body 1 when the dual-coil solenoid valve 6 is clamped, and the unit is megapascal. Its magnitude should not exceed 157 megapascals.

[0095] The maximum deformation refers to the farthest distance between the claw 23 parts in the original state and the clamping state at the same position, in millimeters.

[0096] Data 5, 6, 11 and 12 show that if the thickness of the first connecting part 21 is too thin, its strength is too weak, and it is prone to breakage during production and use.

[0097] Data 5, 9 and 11 show that if the thickness of the limiting block 25 is too small, the maximum stress generated during use will be too large.

[0098] In summary, this device should use data 3 or a limiting block 25 with similar data and a first connecting part 21 to meet the needs of production and actual use.

[0099] In a preferred embodiment, the thickness of the limiting block 25 is 1mm-1.1mm, the thickness of the first connecting part 21 is 1.4mm-1.6mm, and the arc angle formed by the upper and lower surfaces of the first connecting part 21 is 0.9°-1.1°.

[0100] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A connection structure for a dual-coil solenoid valve and a thermocouple, characterized in that, The utility model relates to a kind of electromagnetic valve connection structure, including: Connecting body, the connecting body has axial direction and four sides; Two open-close clamping structures, two the open-close clamping structures are respectively arranged in two of the side of the connecting body; Each of the open-close clamping structure includes: the first connecting part connected with the connecting body, the first plate structure connected with the first connecting part, two claws arranged in the upper end of the first plate structure, wherein the first connecting part and the middle part of the first plate structure are connected, the first plate structure extends along the axial direction of the connecting body, the upper end and the lower end of the first plate structure are protruded from the first connecting part, the first connecting part forms fulcrum in the middle part of the first plate structure to allow the upper end / lower end of the first plate structure to swing relative to the axial direction of the connecting body; Also include: Two auxiliary positioning structures, two the auxiliary positioning structures are respectively arranged in other two of the side of the connecting body; Each of the auxiliary positioning structure includes: the second connecting part connected with the connecting body, the second plate structure connected with the second connecting part, wherein the lower end of the second plate structure and the second connecting part are connected, and the second plate structure extends along the axial direction of the main body; In each of the open-close clamping structure, two the claws are respectively arranged in the two sides of the upper end of the first plate structure, and two the claws are protruded from the first plate structure along the radial direction of the connecting body, and there is a spacing between two the claws; First slot is arranged between two the claws along the axial direction of the connecting body, and the first slot is suitable for mold separation; In each of the open-close clamping structure, the first plate structure is sequentially provided with thick wall part, thin wall part and the claw from one end to the other end along the axial direction of the connecting body; Wherein, the first connecting part is connected with the thick wall part, the thin wall part can be elastically deformed relative to the thick wall part and is used for operatively accommodating at least a part of electromagnetic valve, and the thick wall part and the thin wall part are connected by a first inclined surface. The thickness of the first plate structure at the first slot is less than the thickness of the first plate structure at the thin wall part; 2. The connecting structure of a double-coil electromagnetic valve and a thermocouple according to claim 1, characterized in that, The end surface of the first slot is further provided with a circular arc chamfer; One of the claws, the circular arc chamfer and the other claw form a circular arc along the radial direction of the connecting body. Each of the open-close clamping structure includes two the first connecting part, and two the first connecting part is connected with the middle part of the first plate structure; 3. The connecting structure of a double-coil electromagnetic valve and a thermocouple according to claim 2, characterized in that, The upper surface and the lower surface of each of the first connecting part are arc surfaces. The lower end of the first plate structure of each of the open-close clamping structure is provided with a limiting block towards one side of the connecting body; 4. The connecting structure of a double-coil electromagnetic valve and a thermocouple according to claim 3, characterized in that, The limiting block is operatively abutted on the side wall of the connecting body or separated from the side wall of the connecting body; The limiting block and the first plate structure are integrally connected, fixedly connected in a split type or fixedly connected in a detachable manner. The lower end of the first plate structure of each of the open-close clamping structure is provided with a pressing part on the side away from the connecting body, and the pressing part is provided with anti-skid lines.

5. The structure according to claim 3, wherein ​ 6. The structure according to claim 1, wherein The upper end of the first plate-shaped structure is flush with the upper end of the second plate-shaped structure. The upper surface of the claw has a second inclined surface, and the upper end of the second plate-shaped structure has a third inclined surface. The claw and the second plate-shaped structure form a circular arc in the axial direction of the connecting body.

7. The structure according to claim 1, wherein The upper surface of the second connecting portion extends in the radial direction of the connecting body, and the upper surface of the second connecting portion is an arc surface. The lower surface of the second connecting portion is inclined relative to the radial direction of the connecting body, and the lower surface of the second connecting portion is an inclined surface or an arc surface.

8. The connecting structure of a double-coil electromagnetic valve and a thermocouple according to claim 7, characterized in that, One side of the connecting body is provided with a positioning plate for identifying the direction, and the positioning plate extends to the lower surface of one of the two second connecting portions.

9. The structure according to claim 1, wherein The two sides of the connecting body provided with the opening and closing clamping structure are flat, and the two sides of the connecting body provided with the auxiliary positioning structure are arc surfaces.

10. The structure according to claim 1, wherein The two first connecting portions are in the same plane, the two second connecting portions are in the same plane, and the first connecting portion and the second connecting portion are in different planes.

11. The structure according to claim 1, wherein The two sides of the connecting body provided with the opening and closing clamping structure are each provided with a clamping portion, the clamping portion protrudes from the side wall of the connecting body, and the clamping portion is below the first plate-shaped structure.

12. The structure according to claim 4, wherein The thickness of the limiting block is 1mm-1.1mm, the thickness of the first connecting portion is 1.4mm-1.6mm, and the circular arc angle of the upper surface and the lower surface of the first connecting portion is 0.9°-1.1°.

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