Electronic expansion valve retainer mounting structure and electronic expansion valve

Abstract

The embodiment of the invention provides an electronic expansion valve retainer mounting structure and an electronic expansion valve, and relates to the field of valves, the electronic expansion valve retainer mounting structure comprises a retainer body and a magnet assembly, and the magnet assembly comprises a connecting plate and a magnet body which are connected. The retainer body comprises a fixing part and a retaining part which are connected, the fixing part is connected with the connecting plate, and the retaining part is used for being connected with the slip ring so as to drive the slip ring to rotate through the retaining part when the connecting plate rotates; the ends, away from the fixing part, of the connecting plate and the stopping part are located on the two sides of the plate face of the connecting plate. Through the design of the mounting structure, the connecting reliability of the retainer and the connecting plate can be improved, the retainer is not prone to falling off, the assembling mode is simple, and the assembling efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to an electronic expansion valve stopper installation structure and an electronic expansion valve. Background Art

[0002] In the field of refrigeration and heating technology, the electronic expansion valve is a refrigerant flow control component of the refrigeration and heating equipment. Its working process is generally that as the coil device is powered on or off, the valve needle adjusts the opening of the valve port, thereby adjusting the flow of the refrigerant. In the prior art, the opening of the valve port is controlled by adjusting the lifting stroke of the valve needle, and the lifting stroke of the valve needle is achieved by the cooperation of components such as a stopper, a slip ring, a lead screw and a nut. The outer peripheral surface of the nut is provided with a spiral guide groove, and the lead screw is screwed into the threaded hole of the nut; the slip ring is located in the spiral guide groove, the stopper is connected to the magnet through a connecting plate, and the lead screw is connected to the connecting plate. The stopper and the lead screw both rotate with the magnet and can drive the slip ring to rotate, and the lead screw and the valve needle cooperate to be able to rise and fall together. The rotation stroke of the slip ring is limited by the starting end and the end end of the spiral guide groove, which also limits the rotation range of the magnet, thereby limiting the lifting stroke of the lead screw and the valve needle.

[0003] The inventors have found in their research that the electronic expansion valve stopper installation structure in the prior art has at least the following disadvantages:

[0004] The stopper is connected to the inner wall of the connection seat, and because it is assembled inside the magnet, the assembly process is difficult and the assembly cost is high; in addition, the connection reliability of the stopper is low and the stopper is easy to fall off from the connection plate. Summary of the invention

[0005] The objects of the present invention include, for example, providing an electronic expansion valve stopper installation structure and an electronic expansion valve, which can improve the connection reliability between the stopper and the connecting plate, the stopper is not easy to fall off, and the assembly method is simple and the assembly efficiency is high.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides an electronic expansion valve stopper installation structure, comprising:

[0008] A stopper body and a magnet assembly, wherein the magnet assembly comprises a connected connecting plate and a magnet body, the stopper body comprises a connected fixing portion and a stopper, the fixing portion is connected to the connecting plate, and the stopper is used to connect to a slip ring so as to drive the slip ring to rotate through the stopper when the connecting plate rotates; the connecting plate and one end of the stopper away from the fixing portion are located on both sides of the plate surface of the connecting plate.

[0009] In an optional embodiment, a avoidance hole is provided on the connecting plate, and the stop portion is passed through the avoidance hole.

[0010] Based on the above scheme, by passing the stop part through the avoidance hole and rationally utilizing the space in the area enclosed by the outline of the connecting plate, the stop part and the connecting plate are more compactly combined, the stop part will not occupy the outer space of the connecting plate, and it is not easy to increase the radial size of the overall structure in the connecting plate. The overall structure has a small volume and occupies a small space, which is conducive to the miniaturization and lightweight design of the expansion valve.

[0011] In an optional embodiment, there are multiple avoidance holes, and the multiple avoidance holes are evenly spaced and arranged in the circumferential direction of the rotation axis of the connecting plate.

[0012] Based on the above solution, by providing a plurality of avoidance holes that are evenly spaced, the structural regularity of the connecting plate can be ensured, and the rotation of the connecting plate is more stable and reliable.

[0013] In an optional embodiment, the fixing portion is fixed to the connecting plate by welding.

[0014] Based on the above solution, the fixing method of the fixing part and the connecting plate is simple and reliable, and is easy to process with high processing efficiency.

[0015] In an optional embodiment, the connecting plate includes a connected plate body and a boss, the boss is protruding from a plate surface of the plate body, the fixing portion is fixedly connected to the boss or the plate body, and the fixing portion is in contact with the plate surface of the plate body connected to the boss.

[0016] Based on the above solution, the fixing part cooperates with the boss and the plate body, the contact area between the fixing part and the connecting plate is large, the assembly is tighter, and the stopper body is not easy to fall off the connecting plate.

[0017] In an optional embodiment, the fixing portion is provided with a clamping hole, and the clamping hole is sleeved on the outside of the protruding column.

[0018] Based on the above scheme, the positioning of the stopper body and the connecting plate is achieved through the cooperation of the clamping hole and the protruding column, the installation positions of the two are accurate and reliable, the positioning difficulty is reduced, and the assembly efficiency is improved.

[0019] In an optional embodiment, the fixing portion is provided with a notch communicating with the clamping hole, so that the size of the clamping area surrounded by the clamping hole is adjustable.

[0020] Based on the above scheme, due to the design of the notch, the inner diameter of the card hole can be designed to be smaller than the outer diameter of the boss. After the card hole is connected to the outside of the boss, the card hole is expanded by the boss, and the fixing part has a certain deformation ability and can hold the boss tightly, thereby improving the firmness of the combination between the fixing part and the boss.

[0021] In an optional embodiment, the cross-sectional profile of the clamping hole is a major arc shape, and the cross-section is a plane perpendicular to the axis of the clamping hole.

[0022] Based on the above solution, the clamping hole is an arc-shaped hole, which has a good clamping effect with the convex column.

[0023] In an optional embodiment, the magnet body is configured as a cylindrical structure, and the connecting plate is integrally formed with the magnet body and closes one end of the magnet body.

[0024] Based on the above solution, the integrated structure has high strength and long service life.

[0025] In a second aspect, the present invention provides an electronic expansion valve, the electronic expansion valve comprising:

[0026] The electronic expansion valve stopper mounting structure according to any one of the aforementioned embodiments.

[0027] The beneficial effects of the embodiments of the present invention include, for example:

[0028] In summary, the electronic expansion valve stopper installation structure provided in this embodiment includes a fixed part and a stopper body connected to each other, the fixed part is fixedly connected to the connecting plate of the magnet assembly, and the fixed part and the stopper are respectively located on both sides of the plate surface of the connecting plate, so that when the connecting plate is connected to the magnet, the fixed part can be located on the upper side of the connecting plate, that is, located on the top outer side of the connecting plate, and the stopper is located on the top inner side of the connecting plate. Since the fixed part is directly exposed and is not affected by the magnet body, the installation operation of the fixed part and the connecting plate is simple and reliable, and the assembly efficiency is high. At the same time, the fixed part is located above the connecting plate, the fixed part is carried by the connecting plate, the combination of the fixed part and the connecting plate is more firm, the fixed part is not easy to fall off from the connecting plate, the service life is long, the failure rate is low, and the operating cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of an installation structure of an electronic expansion valve stopper according to an embodiment of the present application;

[0031] Figure 2 A schematic diagram of a stopper body according to an embodiment of the present application;

[0032] Figure 3This is a schematic diagram of the cooperation between the connecting plate and the magnet according to an embodiment of the present application.

[0033] icon:

[0034] 100 - stopper body; 110 - fixing part; 111 - clamping hole; 112 - notch; 120 - stopper; 200 - connecting plate; 210 - plate body; 211 - avoidance part; 220 - boss; 230 - through hole; 300 - magnet body. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0040] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0041] In the prior art, when the stopper of the electronic expansion valve is assembled with the connecting plate 200, the top surface of the stopper is fitted and fixedly connected with the bottom surface of the connecting plate 200, and due to the influence of the assembly sequence, the stopper needs to be assembled with the connecting plate 200 in the limited space surrounded by the magnet body 300, resulting in a small assembly space, high assembly difficulty and low efficiency; in addition, the stopper is easy to fall off the connecting plate 200 and has a short service life.

[0042] In view of this, the designer provides an electronic expansion valve stopper installation structure, which can reduce the difficulty of installation and improve the installation efficiency. In addition, the stopper is firmly combined with the connecting plate 200, and the stopper is not easy to loosen.

[0043] Please combine Figure 1-Figure 3 In this embodiment, the electronic expansion valve stopper installation structure includes a stopper body 100 and a magnet assembly, and the magnet assembly includes a connected connecting plate 200 and a magnet body 300. The stopper body 100 includes a connected fixing portion 110 and a stopper 120, the fixing portion 110 is connected to the connecting plate 200, and the stopper 120 is used to connect with the slip ring so that the slip ring is driven to rotate through the stopper 120 when the connecting plate 200 rotates; the connecting plate 200 and the end of the stopper 120 away from the fixing portion 110 are located on both sides of the plate surface of the connecting plate 200.

[0044] As described above, the assembly methods of the electronic expansion valve stopper installation structure provided in this embodiment include, for example:

[0045] The fixing portion 110 of the stopper body 100 is located on the top of the connecting plate 200 and is exposed outside the space surrounded by the magnet body 300. In this way, the stopper body 100 is not affected by the space surrounded by the magnet body 300 when being fixed to the connecting plate 200, and the installation difficulty is low and the installation efficiency is high. At the same time, the fixing portion 110 of the stopper body 100 is supported by the connecting plate 200, and the stopper body 100 is not easy to loosen from the connecting plate 200, and has a long service life.

[0046] The following embodiments illustrate the details of the electronic expansion valve installation structure of the present application by way of examples.

[0047] In this embodiment, optionally, the electronic expansion valve stopper installation structure includes a stopper body 100 and a magnet assembly. The magnet assembly includes a connecting plate 200 and a magnet body 300. The stopper body 100 is fixedly connected to the connecting plate 200, and the stopper body 100 penetrates the connecting plate 200 so that the stopper body 100 is distributed on both sides of the connecting plate 200. The stopper body 100 can rotate with the connecting plate 200, thereby driving the slip ring to rotate together.

[0048] Please combine Figure 1-Figure 3Optionally, the stopper body 100 includes an integrated fixing portion 110 and a stopping portion 120. The fixing portion 110 is configured as a plate-like structure. The fixing portion 110 is provided with a clamping hole 111 and a notch 112 that penetrate in the thickness direction thereof. The notch 112 communicates with the clamping hole 111. The cross-sectional profile of the clamping hole 111 is an arc shape. The cross-sectional profile of the clamping hole 111 is a plane perpendicular to the axis of the clamping hole 111. The stopping portion 120 is configured as an L-shaped bar. One end of the stopping portion 120 is integrated with the outer peripheral surface of the fixing portion 110. The other end of the stopping portion 120 penetrates the connecting plate 200 and extends along the axial direction of the connecting plate 200.

[0049] It should be understood that the stopper body 100 can be manufactured by stamping, punching, etc., which is suitable for mass production and reduces the manufacturing cost.

[0050] Optionally, the connecting plate 200 includes a plate body 210 and a boss 220 of an integrated structure. The plate body 210 may be a disc, and the plate body 210 and the magnet body 300 are integrally arranged and tightly combined. During operation, the connecting plate 200 will not rotate relative to the magnet body 300. The boss 220 may be a cylindrical structure, and the boss 220 is arranged on a plate surface of the plate body 210, and a through hole 230 may be arranged on the connecting plate 200, and the through hole 230 simultaneously passes through the boss 220 and the connecting plate 200, so as to facilitate the screw to be inserted into the through hole 230 and assembled with the connecting plate 200, thereby realizing connection with the magnet assembly. It should be understood that the boss 220 and the connecting plate 200 are coaxially arranged.

[0051] At the same time, the plate body 210 is provided with a plurality of avoidance portions 211, and the plurality of avoidance portions 211 can be evenly spaced and arranged around the rotation axis of the boss 220, so that the plate body 210 has a regular structure, good dynamic balance, and stable and reliable rotation. For example, in this embodiment, the number of the avoidance portions 211 on the plate body 210 is three, and the three avoidance portions 211 are evenly spaced and arranged in the circumferential direction of the axis of the connecting plate 200.

[0052] It should be understood that the avoidance portion 211 may be an avoidance groove or an avoidance hole. In order to improve the structural strength of the connecting plate 200, the avoidance portion 211 is set as an avoidance hole, and there is no opening on the outside of the connecting plate 200, and the connecting plate 200 has high strength.

[0053] Please combine Figure 1During assembly, the stopper 120 is inserted into the avoidance portion 211. The stopper 120 reasonably utilizes the space in the area surrounded by the contour of the connecting plate 200. The stopper 120 and the connecting plate 200 are more compactly combined. The stopper 120 does not occupy the outer space of the connecting plate 200, and it is not easy to increase the radial size of the overall structure in the connecting plate 200. The overall structure is small in volume and occupies a small space, which is conducive to the miniaturization and lightweight design of the expansion valve. At the same time, the clamping hole 111 on the fixing portion 110 is clamped on the outside of the protruding column 220. The clamping hole 111 uses its elastic deformation force to hold the protruding column 220 tightly, thereby improving the firmness of the connection between the connecting plate 200 and the stopper body 100. In addition, the clamping hole 111 and the protruding column 220 cooperate to realize the rapid positioning of the stopper body 100 and the connecting plate 200, thereby improving the assembly efficiency. The fixing portion 110 can be attached to the top surface of the plate body 210 , and the fixing portion 110 and the plate body 210 or the boss 220 are fixed by welding. The welding operation is simple and the fixing quality is high.

[0054] It should be noted that the magnet body can be set as a cylindrical structure, for example, the magnet body is cylindrical, and the magnet body can be designed as an integrated structure with the connecting plate 200 by injection molding, and the connecting plate 200 closes the top of the magnet body. The two structures are firm, high in strength, and have a long service life. The stopper 120 extends into the magnet body, and the fixing part 110 is located outside the magnet body, which is easy to install.

[0055] The electronic expansion valve stopper installation structure provided in this embodiment can make the fixing part 110 located on the upper side of the connecting plate 200, that is, located on the top outer side of the connecting plate 200, and the stopper 120 located on the top inner side of the connecting plate 200 when the connecting plate 200 is connected to the magnet body 300. Since the fixing part 110 is directly exposed and is not affected by the magnet body 300, the installation operation of the fixing part 110 and the connecting plate 200 is simple and reliable, and the assembly efficiency is high. At the same time, the fixing part 110 is located above the connecting plate 200, and the fixing part 110 is carried by the connecting plate 200. The combination of the fixing part 110 and the connecting plate 200 is more firm, and the fixing part 110 is not easy to fall off from the connecting plate 200, so the service life is long, the failure rate is low, and the operating cost is low.

[0056] This embodiment also provides an electronic expansion valve, which includes the electronic expansion valve stopper installation structure of the above embodiment, and has at least the advantages of simple assembly method, high assembly efficiency, and high bonding firmness.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electronic expansion valve stopper installation structure, characterized in that: include: A stopper body (100) and a magnet assembly, wherein the magnet assembly comprises a connected connecting plate (200) and a magnet body (300), wherein the stopper body (100) comprises a connected fixing portion (110) and a stopping portion (120), wherein the fixing portion (110) is connected to the connecting plate (200), and the stopping portion (120) is used to connect to a slip ring so as to drive the slip ring to rotate through the stopping portion (120) when the connecting plate (200) rotates; and the connecting plate (200) and the stopper (120) are located at two sides of the plate surface of the connecting plate (200) at one end away from the fixing portion (110).

2. The electronic expansion valve stopper installation structure according to claim 1, characterized in that: The connecting plate (200) is provided with an avoidance hole, and the stopper (120) is inserted into the avoidance hole.

3. The electronic expansion valve stopper installation structure according to claim 2, characterized in that: There are a plurality of the avoidance holes, and the plurality of avoidance holes are evenly spaced and arranged in a circumferential direction of the rotation axis of the connecting plate (200).

4. The electronic expansion valve stopper installation structure according to claim 1, characterized in that: The fixing portion (110) is fixed to the connecting plate (200) by welding.

5. The electronic expansion valve stopper installation structure according to claim 1, characterized in that: The connecting plate (200) comprises a connected plate body (210) and a convex column (220), wherein the convex column (220) is convexly arranged on a plate surface of the plate body (210), the fixing portion (110) is fixedly connected to the convex column (220) or the plate body (210), and the fixing portion (110) is in contact with the plate surface of the plate body (210) connected to the convex column (220).

6. The electronic expansion valve stopper installation structure according to claim 5, characterized in that: The fixing portion (110) is provided with a clamping hole (111), and the clamping hole (111) is sleeved outside the protruding column (220).

7. The electronic expansion valve stopper installation structure according to claim 6, characterized in that: The fixing portion (110) is provided with a notch (112) communicating with the clamping hole (111), so that the size of the clamping area surrounded by the clamping hole (111) is adjustable.

8. The electronic expansion valve stopper installation structure according to claim 7, characterized in that: The cross-sectional profile of the clamping hole (111) is an arc shape, and the cross-sectional profile is a plane perpendicular to the axis of the clamping hole (111).

9. The electronic expansion valve stopper installation structure according to claim 1, characterized in that: The magnet body (300) is configured as a cylindrical structure, and the connecting plate (200) is integrally formed with the magnet body (300) and closes one end of the magnet body (300).

10. An electronic expansion valve, characterized in that: The electronic expansion valve comprises: The electronic expansion valve stopper mounting structure according to any one of claims 1 to 9.

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