CN116733924A - Nut assembly and electronic expansion valve - Google Patents

Nut assembly and electronic expansion valve Download PDF

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Publication number
CN116733924A
CN116733924A CN202210213530.9A CN202210213530A CN116733924A CN 116733924 A CN116733924 A CN 116733924A CN 202210213530 A CN202210213530 A CN 202210213530A CN 116733924 A CN116733924 A CN 116733924A
Authority
CN
China
Prior art keywords
nut
limit
connecting plate
limiting
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210213530.9A
Other languages
Chinese (zh)
Inventor
詹少军
陈灿锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dunan Artificial Environment Co Ltd
Original Assignee
Zhejiang Dunan Artificial Environment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Dunan Artificial Environment Co Ltd filed Critical Zhejiang Dunan Artificial Environment Co Ltd
Priority to CN202210213530.9A priority Critical patent/CN116733924A/en
Publication of CN116733924A publication Critical patent/CN116733924A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The application provides a nut component and an electronic expansion valve, wherein the nut component comprises: a nut; the connecting plate is detachably sleeved on the nut, the connecting plate and the nut are in interference fit in the circumferential direction, and the connecting plate and the nut are in clearance fit in the radial direction. By adopting the scheme, the connecting plate on the nut can move along the radial direction of the nut but can not rotate along the circumferential direction of the nut, so that the situation that the nut is positioned too much due to the interference fit between the nut and the connecting plate and between the nut and the valve body in the radial direction in the process of loading the nut assembly into the valve body assembly in the related art is avoided, the coaxiality of the nut and the valve body assembly is improved, the processing precision of the nut assembly can be reduced, the processing cost is reduced, and the production efficiency of the nut assembly is improved.

Description

Nut assembly and electronic expansion valve
Technical Field
The application relates to the technical field of electronic expansion valves, in particular to a nut assembly and an electronic expansion valve.
Background
In the nut component of the electronic expansion valve in the related art, the connecting plate and the nut in the nut component are in interference fit in the radial direction of the nut, and in the process of loading the nut component into the valve body component, the connecting plate and the valve body component are in tight fit generally, so that the nut is easy to be positioned too much in the radial direction, the coaxiality between the nut component and the valve body component cannot be ensured, the processing requirements of the nut component and the valve body component are higher, and the assembly difficulty and the processing difficulty are high.
Disclosure of Invention
The application provides a nut assembly and an electronic expansion valve, which are convenient for assembling the nut assembly.
In order to achieve the above object, according to one aspect of the present application, there is provided a nut assembly comprising: a nut; the connecting plate is detachably sleeved on the nut, the connecting plate and the nut are in interference fit in the circumferential direction, and the connecting plate and the nut are in clearance fit in the radial direction.
Further, the nut comprises a nut main body and a first limiting structure arranged on the nut main body, the connecting plate comprises a connecting ring and a second limiting structure arranged on the connecting ring, the connecting ring is sleeved on the nut main body, the connecting ring is in clearance fit with the nut main body, the first limiting structure and the second limiting structure are in clearance fit with each other in the radial direction of the connecting ring, and the first limiting structure and the second limiting structure are in interference fit with each other in the circumferential direction of the connecting ring.
Further, the first limit structure comprises a limit boss arranged on the outer wall of the nut body, the second limit structure comprises a limit groove arranged on the inner wall of the connecting plate, and the limit boss is positioned in the limit groove.
Further, the limiting boss is provided with two first limiting surfaces and a first matching surface positioned between the two first limiting surfaces, and the limiting groove is provided with two second limiting surfaces and a second matching surface positioned between the two second limiting surfaces; the first matching surface and the second matching surface are in clearance fit, and the two first limiting surfaces and the two second limiting surfaces are in one-to-one corresponding limiting fit.
Further, the two first limiting surfaces and the two second limiting surfaces are arranged in parallel, the distance between the two first limiting surfaces is L1, and the distance between the two second limiting surfaces is L2, wherein L1-L2 is more than or equal to 0.03mm.
Further, the first matching surface and the second matching surface are arc-shaped surfaces which are coaxially arranged, the diameter d3 of the first matching surface is d4, and the diameter d4-d3 of the second matching surface is more than or equal to 0.1mm.
Further, the maximum diameter of the nut main body is d1, the inner diameter of the connecting ring is d2, and d2-d1 is more than or equal to 0.1mm.
Further, in the axial direction of the nut, the size of the limit boss is larger than the thickness of the connecting plate.
Further, the limiting boss is further provided with two guiding inclined planes, and the two guiding inclined planes are respectively connected with one ends, far away from the connecting plate, of the two first limiting surfaces.
Further, the nut main part is including the nut section, changeover portion, the linkage segment that connect gradually, and the nut still includes the limiting plate of being connected with the linkage segment, and the external diameter of linkage segment is greater than the external diameter of nut section, and the external diameter of limiting plate is greater than the external diameter of linkage segment, and connecting plate detachably cover is established on the linkage segment, connecting plate and limiting plate butt, and first limit structure is located the outer wall of linkage segment.
According to another aspect of the present application, there is provided an electronic expansion valve comprising a valve body assembly and the nut assembly described above, the nut assembly being located within the valve body assembly.
Further, the electronic expansion valve further comprises a guide sleeve, the guide sleeve is arranged in the cavity of the valve body assembly, the nut is provided with a positioning hole, one end of the guide sleeve penetrates into the positioning hole, and the outer wall of the guide sleeve is in interference fit with the inner wall of the positioning hole.
Further, the valve body assembly comprises a valve cover and a valve seat which are connected with each other, at least one part of the nut is positioned in a cavity of the valve cover, the valve seat comprises a seat body and a valve port piece which are connected with each other, the seat body is connected with the valve cover, the valve port piece is provided with a positioning boss, the positioning boss penetrates into one end of the guide sleeve far away from the nut, and the positioning boss is in interference fit with the guide sleeve.
By applying the technical scheme of the application, the nut assembly comprises: a nut; the connecting plate is detachably sleeved on the nut, the connecting plate and the nut are in interference fit in the circumferential direction, and the connecting plate and the nut are in clearance fit in the radial direction. By adopting the scheme, the connecting plate on the nut can move along the radial direction of the nut but can not rotate along the circumferential direction of the nut, so that the situation that the coaxiality between the nut component and the valve body component cannot be ensured due to the fact that the connecting plate and the valve body component are tightly matched to cause the nut to be positioned too far in the radial direction in the process of loading the valve body component in the related art is avoided, the coaxiality of the nut component and the valve body component is improved, the processing precision and the processing cost of the nut component are reduced, the assembly difficulty of the nut component is reduced, and the production efficiency of the nut component is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic structural view of a nut assembly provided by an embodiment of the present application;
FIG. 2 shows a schematic structural view of a nut in the nut assembly of FIG. 1;
FIG. 3 shows a top view of the nut of FIG. 2;
FIG. 4 shows a schematic structural view of the connection plate in the nut assembly of FIG. 1;
fig. 5 shows a schematic structural diagram of an electronic expansion valve according to another embodiment of the present application.
Wherein the above figures include the following reference numerals:
10. a nut; 11. a nut body; 111. a nut section; 112. a transition section; 113. a connection section; 114. a limiting plate; 12. a first limit structure; 121. a first limiting surface; 122. a first mating surface; 123. a guide slope;
20. a connecting plate; 21. a connecting ring; 22. a second limit structure; 221. the second limiting surface; 222. a second mating surface;
30. a valve body assembly; 31. a valve cover; 32. a valve seat; 321. a base; 322. a valve port member; 323. positioning the boss;
40. a guide sleeve.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1 to 4, an embodiment of the present application provides a nut assembly including: a nut 10; the connecting plate 20 is detachably sleeved on the nut 10, the connecting plate 20 and the nut 10 are in interference fit in the circumferential direction, and the connecting plate 20 and the nut 10 are in clearance fit in the radial direction.
In this embodiment, the connecting plate 20 on the nut 10 can move along the radial direction of the nut 10 but cannot rotate along the circumferential direction of the nut 10, so that the situation that the coaxiality between the nut component and the valve body component cannot be ensured due to the fact that the connecting plate 20 and the valve body component are tightly matched to cause the over-positioning of the nut 10 in the radial direction in the process of loading the valve body component 30 in the related art is avoided, the coaxiality of the nut component and the valve body component is improved, the processing precision and the processing cost of the nut component are reduced, the assembly difficulty of the nut component is reduced, and the production efficiency of the nut component is improved.
Specifically, the nut 10 includes a nut body 11 and a first limit structure 12 disposed on the nut body 11, the connecting plate 20 includes a connecting ring 21 and a second limit structure 22 disposed on the connecting ring 21, wherein the connecting ring 21 is sleeved on the nut body 11, the connecting ring 21 and the nut body 11 are in clearance fit, the first limit structure 12 and the second limit structure 22 are in clearance fit in a radial direction of the connecting ring 21, and the first limit structure 12 and the second limit structure 22 are in interference fit in a circumferential direction of the connecting ring 21. The setting like this realizes the spacing cooperation between connecting plate 20 and the nut 10 through the spacing cooperation between first limit structure 12 and the second limit structure 22, and directly sets up first limit structure 12 on the nut 10, and second limit structure 22 directly sets up on connecting plate 20, has reduced first limit structure 12 and the overall dimension of second limit structure 22 when being convenient for processing, guarantees the miniaturization of nut subassembly.
Specifically, the first limiting structure 12 includes a limiting boss disposed on an outer wall of the nut body 11, and the second limiting structure 22 includes a limiting groove disposed on an inner wall of the connecting plate 20, where the limiting boss is located in the limiting groove. In this embodiment, the limit fit between the first limit structure 12 and the second limit structure 22 is mainly designed to be the limit fit between the limit bump and the limit groove, which has simple structure, convenient processing and reliable fit.
As shown in fig. 3 and 4, the limiting boss has two first limiting surfaces 121 and a first mating surface 122 between the two first limiting surfaces 121, and the limiting groove has two second limiting surfaces 221 and a second mating surface 222 between the two second limiting surfaces 221; the first mating surface 122 and the second mating surface 222 are in clearance fit, and the two first limiting surfaces 121 and the two second limiting surfaces 221 are in one-to-one corresponding limiting fit.
In this embodiment, through the clearance fit of the first mating surface 122 and the second mating surface 222, the connecting plate 20 can move slightly in the radial direction of the nut main body 11, and through the one-to-one limit fit of the two first limit surfaces 121 and the two second limit surfaces 221, the rotation of the connecting plate 20 in the circumferential direction of the nut main body 11 is limited, the situation that the connecting plate 20 is positioned excessively is avoided, the forming of the limit boss and the limit groove is facilitated, the structure is simple, and the matching is reliable. Specifically, the two first limiting surfaces 121 and the two second limiting surfaces 221 are in interference fit in a one-to-one correspondence.
Specifically, the two first limiting surfaces 121 and the two second limiting surfaces 221 are arranged in parallel, the distance between the two first limiting surfaces 121 is L1, the distance between the two second limiting surfaces 221 is L2, and L1-L2 is more than or equal to 0.03mm. The arrangement is such that the width of the limit groove sleeved on the outer circumferential surface of the nut body 11 is smaller than the width of the limit bump on the nut body 11, and the reliability of interference fit between the first limit surface 121 and the second limit surface 221 is ensured. Specifically, the situation that the interference between the limit bump and the limit groove is insufficient to limit the rotation of the connecting plate 20 along the circumferential direction of the nut main body 11 when L1-L2 is less than 0.03mm is avoided, and the reliability of the interference fit between the limit bump and the limit groove is ensured.
Further, the first mating surface 122 and the second mating surface 222 are arc-shaped surfaces coaxially arranged, the diameter d3 of the first mating surface 122, and the diameter d4 of the second mating surface 222 is greater than or equal to 0.1mm. The arrangement is such that the depth of the limit groove sleeved on the outer circumferential surface of the nut body 11 is greater than the length of the limit projection on the nut body 11, so that the reliability of clearance fit between the first fit surface 122 and the second fit surface 222 is ensured. Specifically, the situation that the clearance between the limit lug and the limit groove is insufficient to enable the connecting plate 20 to move along the radial direction of the nut main body 11 when d4-d3 is smaller than 0.1mm is avoided, and the reliability of clearance fit between the limit lug and the limit groove is ensured.
Further, the maximum diameter of the nut body 11 is d1, the inner diameter of the connecting ring 21 is d2, and d2-d1 is not less than 0.1mm. The arrangement is such that the maximum radial dimension of the nut body 11 is larger than the inner diameter of the connecting ring 21, ensuring the reliability of the radial movement of the connecting ring 21 along the nut body 11. Specifically, the situation that the inner side wall of the connecting ring 21 is tightly matched with the outer side wall of the nut main body 11 when d2-d1 is less than 0.1mm, so that the connecting plate 20 cannot move along the radial direction of the nut main body 11 is avoided, and the reliability of clearance fit between the connecting plate 20 and the nut 10 is ensured.
As shown in fig. 1, in the axial direction of the nut 10, the size of the limit boss is larger than the thickness of the connection plate 20. By this arrangement, the limiting effect of the limiting boss on the connecting plate 20 can be ensured.
Specifically, the limiting boss further has two guiding inclined planes 123, and the two guiding inclined planes 123 are respectively connected with one ends of the two first limiting surfaces 121, which are far away from the connecting plate 20.
In this embodiment, through setting up two guide inclined planes 123, be convenient for to the direction installation of connecting plate 20, prevent that connecting plate 20 from taking place to collide with spacing boss in the installation and leading to the impaired condition of connecting plate 20 or spacing boss, prevent simultaneously that connecting plate 20 mounted position is inaccurate the condition, guarantee the reliability of connecting plate 20 installation.
As shown in fig. 1 and 2, the nut body 11 includes a nut section 111, a transition section 112, a connection section 113 that connect in order, the nut 10 further includes a limiting plate 114 that connects with the connection section 113, the outer diameter of the connection section 113 is greater than the outer diameter of the nut section 111, the outer diameter of the limiting plate 114 is greater than the outer diameter of the connection section 113, the connection plate 20 is detachably sleeved on the connection section 113, the connection plate 20 is abutted with the limiting plate 114, and the first limiting structure 12 is located on the outer wall of the connection section 113.
In the present embodiment, the connection plate 20 and the nut body 11 are detachably connected. Through setting up connecting plate 20 and nut main part 11 components of a whole that can function independently, the condition that need put into the connecting plate when having avoided carrying out the inserts to the nut subassembly among the related art, improved nut subassembly production efficiency, avoided simultaneously the unable secondary feed back of nut main part 11 with connecting plate 20 to use the condition for nut main part 11 can use by the secondary feed back better. In addition, the situation that the nut component is damaged due to the fact that more burrs exist at the connecting positions of the connecting plate and the nut when the nut component is subjected to insert injection molding in the related technology is avoided, and the structural strength of the nut component is improved. Specifically, the first limiting structure 12 is connected to the connecting section 113 and the limiting plate 114.
As shown in fig. 5, another embodiment of the present application provides an electronic expansion valve comprising a valve body assembly 30 and the nut assembly described above, the nut assembly being located within the valve body assembly 30.
Specifically, the electronic expansion valve further comprises a guide sleeve 40, the guide sleeve 40 is arranged in the cavity of the valve body assembly 30, the nut 10 is provided with a positioning hole, one end of the guide sleeve 40 penetrates into the positioning hole, and the outer wall of the guide sleeve 40 is in interference fit with the inner wall of the positioning hole.
In this embodiment, the outer wall of the guide sleeve 40 and the inner wall of the positioning hole are in interference fit, so as to ensure coaxiality between the nut assembly and the guide sleeve 40. Meanwhile, in combination with the arrangement, the situation that the nut 10 is positioned excessively due to interference fit of the guide sleeve 40 and the nut 10 positioning hole and interference fit of the connecting plate 20 and the nut 10 in the process of installing the nut assembly into the valve body assembly in the related art is avoided, the coaxiality of the nut assembly and the guide sleeve 40 is improved, the machining precision of the connecting plate 20, the nut 10 and the guide sleeve 40 in the nut assembly is reduced, the machining cost is reduced, and the production efficiency of the nut assembly is improved.
Further, the valve body assembly 30 includes a valve cap 31 and a valve seat 32 connected to each other, at least a portion of the nut 10 is located in a cavity of the valve cap 31, the valve seat 32 includes a seat body 321 and a valve port member 322 connected to each other, the seat body 321 is connected to the valve cap 31, the valve port member 322 has a positioning boss 323, the positioning boss 323 penetrates into an end of the guide sleeve 40 away from the nut 10, and the positioning boss 323 is in interference fit with the guide sleeve 40.
In this embodiment, through the interference fit between the positioning boss 323 and the guide sleeve 40, the coaxiality between the guide sleeve 40 and the valve body assembly is ensured, and in combination with the interference fit between the guide sleeve 40 and the positioning hole, the coaxiality between the valve body assembly and the nut assembly is ensured, and the reliability of the electronic expansion valve is ensured.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (13)

1. A nut assembly, comprising:
a nut (10);
the connecting plate (20), connecting plate (20) detachably cover is established on nut (10), connecting plate (20) with nut (10) are in interference fit in circumference, connecting plate (20) with nut (10) are in clearance fit in radial.
2. Nut assembly according to claim 1, the nut (10) comprising a nut body (11) and a first limit structure (12) arranged on the nut body (11), the connecting plate (20) comprising a connecting ring (21) and a second limit structure (22) arranged on the connecting ring (21), wherein the connecting ring (21) is sleeved on the nut body (11), the connecting ring (21) and the nut body (11) are in clearance fit, the first limit structure (12) and the second limit structure (22) are in clearance fit in the radial direction of the connecting ring (21), and the first limit structure (12) and the second limit structure (22) are in interference fit in the circumferential direction of the connecting ring (21).
3. Nut assembly according to claim 2, characterized in that the first limit structure (12) comprises a limit boss provided on the outer wall of the nut body (11), the second limit structure (22) comprises a limit groove provided on the inner wall of the connecting plate (20), the limit boss being located in the limit groove.
4. A nut assembly according to claim 3, characterized in that the limit projection has two first limit faces (121) and a first mating face (122) between the two first limit faces (121), the limit slot has two second limit faces (221) and a second mating face (222) between the two second limit faces (221); the first matching surface (122) and the second matching surface (222) are in clearance fit, and the two first limiting surfaces (121) and the two second limiting surfaces (221) are in one-to-one corresponding limiting fit.
5. The nut assembly according to claim 4, characterized in that the two first limiting surfaces (121) and the two second limiting surfaces (221) are arranged in parallel, the distance between the two first limiting surfaces (121) is L1, and the distance between the two second limiting surfaces (221) is L2, wherein L1-L2 is greater than or equal to 0.03mm.
6. The nut assembly according to claim 4, characterized in that the first mating surface (122) and the second mating surface (222) are arc-shaped surfaces coaxially arranged, the diameter d3 of the first mating surface (122) and the diameter d4 of the second mating surface (222) are d4, d4-d3 being larger than or equal to 0.1mm.
7. Nut assembly according to claim 4, characterized in that the maximum diameter of the nut body (11) is d1, the inner diameter of the connecting ring (21) is d2, d2-d1 being ≡0.1mm.
8. Nut assembly according to claim 4, characterized in that the limit boss has a dimension in the axial direction of the nut (10) that is greater than the thickness of the web (20).
9. The nut assembly according to claim 4, said limiting boss further having two guiding inclined surfaces (123), said guiding inclined surfaces (123) being respectively connected to ends of said first limiting surfaces (121) remote from said connecting plate (20).
10. The nut assembly according to claim 2, characterized in that the nut body (11) comprises a nut section (111), a transition section (112) and a connecting section (113) which are sequentially connected, the nut (10) further comprises a limiting plate (114) connected with the connecting section (113), the outer diameter of the connecting section (113) is larger than that of the nut section (111), the outer diameter of the limiting plate (114) is larger than that of the connecting section (113), the connecting plate (20) is detachably sleeved on the connecting section (113), the connecting plate (20) is abutted with the limiting plate (114), and the first limiting structure (12) is located on the outer wall of the connecting section (113).
11. An electronic expansion valve, characterized in that it comprises a valve body assembly (30) and a nut assembly according to any of claims 1 to 10, said nut assembly being located inside said valve body assembly (30).
12. The electronic expansion valve of claim 11, further comprising a guide sleeve (40), wherein the guide sleeve (40) is disposed in the cavity of the valve body assembly (30), wherein the nut (10) has a positioning hole, wherein one end of the guide sleeve (40) penetrates into the positioning hole, and wherein an outer wall of the guide sleeve (40) is in interference fit with an inner wall of the positioning hole.
13. The electronic expansion valve of claim 12, wherein the valve body assembly (30) includes a bonnet (31) and a valve seat (32) that are connected to each other, at least a portion of the nut (10) is located in the cavity of the bonnet (31), the valve seat (32) includes a seat body (321) and a valve port member (322) that are connected to each other, the seat body (321) is connected to the bonnet (31), the valve port member (322) has a positioning boss (323), the positioning boss (323) penetrates into an end of the guide sleeve (40) that is remote from the nut (10), and the positioning boss (323) is in interference fit with the guide sleeve (40).
CN202210213530.9A 2022-03-04 2022-03-04 Nut assembly and electronic expansion valve Pending CN116733924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210213530.9A CN116733924A (en) 2022-03-04 2022-03-04 Nut assembly and electronic expansion valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210213530.9A CN116733924A (en) 2022-03-04 2022-03-04 Nut assembly and electronic expansion valve

Publications (1)

Publication Number Publication Date
CN116733924A true CN116733924A (en) 2023-09-12

Family

ID=87908507

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210213530.9A Pending CN116733924A (en) 2022-03-04 2022-03-04 Nut assembly and electronic expansion valve

Country Status (1)

Country Link
CN (1) CN116733924A (en)

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