WO2021109674A1 - 防拆螺母组件及空调系统 - Google Patents

防拆螺母组件及空调系统 Download PDF

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Publication number
WO2021109674A1
WO2021109674A1 PCT/CN2020/115439 CN2020115439W WO2021109674A1 WO 2021109674 A1 WO2021109674 A1 WO 2021109674A1 CN 2020115439 W CN2020115439 W CN 2020115439W WO 2021109674 A1 WO2021109674 A1 WO 2021109674A1
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WO
WIPO (PCT)
Prior art keywords
nut
tamper
pipe joint
pipe
threaded section
Prior art date
Application number
PCT/CN2020/115439
Other languages
English (en)
French (fr)
Inventor
楼峰
陈狄永
周峰
冯光华
高晚生
谭震宇
Original Assignee
浙江盾安人工环境股份有限公司
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
Priority claimed from CN201922150964.5U external-priority patent/CN211715967U/zh
Priority claimed from CN201922153440.1U external-priority patent/CN211738304U/zh
Priority claimed from CN201922150254.2U external-priority patent/CN211738303U/zh
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2022528221A priority Critical patent/JP7413529B2/ja
Priority to EP20895221.8A priority patent/EP4067720A4/en
Priority to KR1020227022331A priority patent/KR20220103184A/ko
Publication of WO2021109674A1 publication Critical patent/WO2021109674A1/zh

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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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts

Definitions

  • This application relates to the technical field of refrigeration equipment, and in particular to a tamper-proof nut assembly and an air conditioning system.
  • the pipe joint and the pipe are fastened by a connecting nut, and one end of the pipe is installed in the connecting nut.
  • the connecting nut is tightened. Torque causes the connecting nut to rotate to tightly connect with the pipe joint, thereby locking the connecting pipe and the pipe joint.
  • the connecting nut is turned in the opposite direction, the connecting pipe and the pipe joint can be removed, which cannot meet the requirements of the flammable refrigerant air-conditioning system. Installation requirements on the indoor side.
  • a tamper nut assembly for fixing a first connecting pipe and a second connecting pipe.
  • the tamper nut assembly includes a pipe joint, a connecting nut, and a tamper nut.
  • the anti-disassembly nut assembly can realize the anti-disassembly effect between the connection nut and the pipe joint by installing the anti-disassembly nut on the connection nut or the pipe joint, and further realize the anti-disassembly connection between the first connection pipe and the second connection pipe.
  • the tamper nut is sleeved on the connecting nut and is threadedly connected to an end of the connecting nut that is relatively far away from the first connecting pipe; the inner surface of the connecting nut is threadedly connected to the pipe The inner thread of the joint, the outer surface of the connecting nut forms an outer thread that is threadedly connected to the tamper nut, and the thread of the inner thread is opposite to the thread of the outer thread.
  • the threaded length of the tamper nut and the connecting nut is smaller than the threaded length of the connecting nut and the pipe joint.
  • the outer surface of the connecting nut is provided with a threaded section and a smooth section, and the tamper nut is threadedly connected with the threaded section;
  • the pipe joint includes a mounting portion with a non-circular outer surface ;
  • the tamper-proof nut is an outer hexagonal nut.
  • the tamper nut is sleeved on the pipe joint and threadedly connected to the pipe joint.
  • one end of the pipe joint relatively close to the first connecting pipe forms a first threaded section that is threadedly connected to the connecting nut, and the other end of the pipe joint forms a threaded connection to the tamper nut
  • the second threaded section, the first threaded section and the second threaded section have opposite thread directions.
  • the end of the pipe joint relatively close to the first connecting pipe forms a first threaded section that is threadedly connected to the connecting nut, and the end of the pipe joint relatively far away from the first connecting pipe forms a threaded connection
  • the first threaded section and the second threaded section have the same threading direction.
  • one end of the pipe joint extends in a radial direction to form a stop part, and the stop part abuts against the tamper nut.
  • the threaded length of the tamper nut and the pipe joint is smaller than the threaded length of the connecting nut and the pipe joint.
  • the connecting nut includes a screw part with a non-circular outer surface; the tamper-resistant nut is an outer hexagonal nut.
  • the thread on the inner side of the tamper nut extends to both ends of the tamper nut (30); or,
  • the thread on the inner side of the tamper nut shown only extends to one end of the tamper nut.
  • the present application also provides an air conditioning system, including a first connecting pipe, a second connecting pipe, and a tamper nut assembly, the tamper nut assembly being the tamper nut assembly described in any one of the above.
  • the first connection pipe and the pipe joint are fixed by welding, and the second connection pipe is abutted and fixed in the connecting nut by the pipe joint.
  • FIG. 1 is a schematic diagram of the structure of the tamper nut assembly connected to the first connecting pipe and the second connecting pipe in an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of the connecting nut and the tamper nut in the tamper nut assembly shown in FIG. 1.
  • FIG. 3 is a schematic cross-sectional view of a tightened state of the tamper nut and the connecting nut in the tamper nut assembly shown in FIG. 1.
  • FIG. 4 is a schematic cross-sectional view of the tamper nut and the connecting nut in the tamper nut assembly shown in FIG. 3 when the tamper nut and the connecting nut are not tightened.
  • FIG. 5 is a schematic diagram of the structure of the tamper nut assembly connected to the first connecting pipe and the second connecting pipe in another embodiment of the application.
  • Fig. 6 is a structural diagram of the pipe joint in the tamper nut assembly shown in Fig. 5.
  • Fig. 7 is a structural schematic diagram of the tamper nut and pipe joint in the tamper nut assembly shown in Fig. 5 not being tightened.
  • Fig. 8 is a schematic cross-sectional view of the tamper nut assembly shown in Fig. 5.
  • Fig. 9 is a schematic cross-sectional view of the tamper nut assembly shown in Fig. 7.
  • FIG. 10 is a schematic diagram of the structure of the tamper nut assembly connected to the first connecting pipe and the second connecting pipe in another embodiment of the application.
  • Fig. 11 is a structural diagram of a pipe joint in the tamper nut assembly shown in Fig. 10.
  • Fig. 12 is a schematic cross-sectional view showing the connection of the tamper nut assembly shown in Fig. 10 with the first connecting pipe and the second connecting pipe.
  • 100 tamper-proof nut assembly; 10, pipe joint; 11, mounting part; 12, abutting part; 13, first thread section; 14, 14a, second thread section; 15, 15a, stop part; 20. Connecting nut; 21. Threaded section; 22. Smooth section; 23. Screwed part; 30. Anti-tamper nut; 201. First connection pipe; 2011. Flaring part; 202. Second connection pipe.
  • the present application provides an anti-disassembly nut assembly 100, which is used to install in an air-conditioning indoor unit to prevent the refrigerant connection pipeline from being dismantled by mistake.
  • anti-disassembly nut assembly 100 described above can also be used in other equipment that requires an anti-disassembly structure, such as a refrigerator.
  • the national standard installation requirement for the indoor side of the air-conditioning system is the non-detachable connection of the refrigerant pipes to prevent users from disassembling them and causing safety hazards.
  • the tamper nut assembly 100 also includes a tamper nut 30, so that the pipe joint 10 and the connecting nut The connection between 20 is non-detachable.
  • the tamper nut assembly 100 includes a pipe joint 10, a connecting nut 20, and a tamper nut 30.
  • the pipe joint 10 is used for threaded connection with the connecting nut 20 and simultaneously fixes the first connecting pipe 201 in the connecting nut 20.
  • the connecting nut 20 is used for The pipe joint 10 is connected, and the tamper-proof nut 30 is used to further tighten the connection between the pipe joint 10 and the connecting nut 20 and prevent the two from being disassembled.
  • the tamper nut assembly 100 is illustrated by the following three embodiments.
  • FIG. 1 is a schematic structural diagram of the connection between the tamper nut assembly 100 and the first connecting pipe 201 and the second connecting pipe 202 in an embodiment of the application.
  • One end of the connecting nut 20 is inserted into the first connecting pipe 201, the other end of the connecting nut 20 is screwed to the pipe joint 10, and the first connecting pipe 201 abuts in the connecting nut 20 through the pipe joint 10.
  • the pipe joint 10 and the connecting nut 20 are tightened to the maximum extent, the pipe joint 10 abuts the first connecting pipe 201, the tamper nut 30 is threadedly connected to the end of the connecting nut 20 away from the first connecting pipe 201, and the second connecting pipe 202 is fixedly inserted The end of the pipe joint 10 away from the first connecting pipe 201.
  • the pipe joint 10 is roughly cylindrical. One end of the pipe joint 10 away from the first connecting pipe 201 extends in the radial direction to form a mounting portion 11, and the other end shrinks in the radial direction to form an abutment portion 12, and the outer surface of the pipe joint 10 is close to the abutment
  • the position of the portion 12 is provided with a first threaded section 13.
  • the mounting portion 11 is used for threadedly connecting the pipe joint 10 to the connecting nut 20 with a tool
  • the abutting portion 12 is used for abutting the first connecting pipe 201
  • the threaded section 21 is used for threaded connection with the connecting nut 20.
  • the second connecting pipe 202 is fixedly inserted into the mounting portion 11, and the specific connection method may be fixed connection methods such as welding or riveting, and the sealing performance between the second connecting pipe 202 and the mounting portion 11 is ensured.
  • the mounting portion 11 is approximately an outer hexagonal prism.
  • the shape of the mounting portion 11 can be set to other non-circular structures, such as triangular prisms, as long as it is convenient to screw the pipe joint 10 into the connecting nut 20 with a tool.
  • FIG. 2 is a structural diagram of the connecting nut 20 and the tamper nut 30 in the tamper nut assembly 100 shown in FIG. 1;
  • FIG. 3 is the tamper nut assembly 100 in FIG. 1 A schematic cross-sectional view of the tightened state of the nut 30 and the connecting nut 20;
  • FIG. 4 is a schematic cross-sectional view of the tamper nut 30 and the connecting nut 20 in the tamper nut assembly 100 shown in FIG. 3 in a not tightened state.
  • the connecting nut 20 is roughly a cylindrical nut, and the inner surface is provided with threads for connecting the pipe joint 10.
  • One end of the first connecting pipe 201 for inserting into the connecting nut 20 is set as a flared portion 2011, and the flaring portion 2011 is used to prevent the first connecting pipe 201 from being directly pulled out of the connecting nut 20, and the connecting nut 20 is also correspondingly set to be able to accommodate
  • the accommodating cavity of the first connecting tube 201 is provided with a shrinking opening structure to prevent the first connecting tube 201 from coming out, and the outer surface of the flaring portion 2011 is attached to the inner wall of the shrinking opening.
  • the contraction shape of the abutting portion 12 of the pipe joint 10 is also set corresponding to the flaring portion 2011 of the first connecting pipe 201 to ensure that the abutting portion 12 can be in close contact with and sealed with the first connecting pipe 201.
  • the tamper nut 30 is an outer hexagonal nut, which is sleeved on the end of the connecting nut 20 away from the first connecting pipe 201.
  • the outer surface of the connecting nut 20 is provided with a corresponding thread section 21, which is used to interact with the tamper nut 30 connection.
  • the connecting nut 20 is also provided with a smooth section 22 connected with the threaded section 21 and having the same diameter. The smooth section 22 is used to prevent the tamper nut 30 from being directly screwed out of the connecting nut 20.
  • the tamper nut 30 is arranged between the pipe joint 10 and the connecting nut 20, and the inner diameter of the tamper nut 30 is smaller than the outer diameter of the mounting portion 11, so that the tamper nut 30 is not easily lost during installation and is convenient for the installer to directly install and connect.
  • the tamper nut 30 and the connecting nut 20 are tightened to the bottom end of the threaded section 21, the tamper nut 30 is further tightened until the thread of the tamper nut 30 and the surface of the threaded section 21 have slip teeth. At this time, the tamper resistant It is difficult for the nut 30 to continue to be tightened in or out with a tool, and the connecting nut 20 cannot be further tightened or loosened. Therefore, the tamper-resistant connection between the tamper nut 30 and the connecting nut 20 can be further ensured.
  • the tamper nut 30 in this embodiment is an outer hexagonal nut. This arrangement can make it more convenient and save effort for the installer to turn the tamper nut 30 on the one hand, and on the other hand, it can be matched with various existing wrench tools. , Increase the scope of selection of wrench tools.
  • the tamper nut 30 can also be a nut of another shape, such as a pentagonal nut, as long as it can be easily connected to the connecting nut 20; the connecting nut 20 can also be prevented in other ways
  • a method of protruding a stopper on the outer surface of the connecting nut 20, as long as it can prevent the tamper nut 30 from being directly screwed out of the connecting nut 20 for example, a method of protruding a stopper on the outer surface of the connecting nut 20, as long as it can prevent the tamper nut 30 from being directly screwed out of the connecting nut 20.
  • the hardness of the tamper nut 30 is lower than the hardness of the pipe joint 10 and the connecting nut 20.
  • the outer surface of the connecting nut 20 forms an outer thread that is threadedly connected to the tamper nut 30, and the inner surface of the connecting nut 20 forms an inner thread that is threadedly connected to the pipe joint 10, and the direction of rotation of the outer thread and the inner thread are opposite. That is, the tightening direction of the tamper nut 30 screwed into the connecting nut 20 is opposite to the tightening direction of the connecting nut 20 screwed into the pipe joint 10.
  • the tamper nut 30 can drive the connection nut 20 and the pipe joint 10 to be further tightened while being tightened, and can prevent the connection nut 20 from being screwed out of the pipe joint 10.
  • the inner surface of the connecting nut 20 can be set as a right-hand thread, and the outer surface is set as a left-hand thread on the contrary.
  • the installer will screw the tamper nut 30 into the tightening direction F1 of the connecting nut 20 and the pipe joint 10 into the connecting nut 20.
  • the tightening directions F2 are shown in Figure 1. However, when the installer fixes the connecting nut 20 and screwed the pipe joint 10 into the connecting nut 20 with a tool, the tightening direction is opposite to the direction of F2 in the figure.
  • the screw connection between the connection nut 20 and the pipe joint 10 can be made. If the bite depth of the connection is greater than the bite depth of the tamper nut 30 and the connecting nut 20 screwed, the force of the pipe joint 10 screwed into the connecting nut 20 is greater than the force of the tamper nut 30 screwed into the connecting nut 20. With this arrangement, when the thread of the tamper nut 30 and the surface of the threaded section 21 produce sliding teeth, the phenomenon of sliding teeth is unlikely to occur between the connecting nut 20 and the pipe joint 10.
  • the threaded length of the connecting nut 20 and the pipe joint 10 is greater than the threaded length of the tamper nut 30 and the connecting nut 20; or, the number of threaded teeth of the connecting nut 20 and the pipe joint 10 can be set to be greater than that of the anti-tamper nut 30 The number of threaded teeth of the disassembled nut 30 and the connecting nut 20.
  • the thread on the inner side of the tamper nut 30 penetrates both ends of the tamper nut 30, so that the strength of the connection between the tamper nut 30 and the connecting nut 20 is better.
  • the inner thread of the tamper nut 30 only penetrates one end of the tamper nut 30, which makes the processing convenient and time-saving, and reduces the processing cost.
  • the tamper nut 30 since the thread connection strength between the tamper nut 30 and the connecting nut 20 is less than the thread connection strength between the connecting nut 20 and the pipe joint 10, the tamper nut 30 There will be a slippage phenomenon between 30 and the connecting nut 20, that is, the internal thread of the tamper nut 30 and the external thread of the threaded section 21 cannot be occluded. At this time, the tamper nut 30 is rotated in the locking direction or in the loosening direction.
  • the connecting nut 20 does not rotate; furthermore, because the outer circumference of the smooth section 22 is a smooth curved surface, it is impossible to rotate the connecting nut 20 with other tools to loosen it, which realizes the requirement of non-detachable connecting nut 20 and prevents refrigeration. Agent leakage caused by man-made mistaken disassembly.
  • FIG. 5 is a schematic diagram showing the connection of the tamper nut assembly 100 with the first connecting pipe 201 and the second connecting pipe 202 in another embodiment of the application;
  • FIG. 6 is the tamper nut shown in FIG. 5
  • FIG. 7 is a structural diagram of the tamper nut 30 and the pipe joint 10 in the tamper nut assembly 100 shown in FIG. 5 in an untwisted state.
  • One end of the connecting nut 20 is inserted into the first connecting pipe 201, the other end of the connecting nut 20 is screwed to the pipe joint 10, and the first connecting pipe 201 abuts in the connecting nut 20 through the pipe joint 10.
  • the pipe joint 10 and the connecting nut 20 are tightened to the maximum extent, the pipe joint 10 abuts the first connecting pipe 201, the tamper nut 30 is threadedly connected to the pipe joint 10, and the second connecting pipe 202 is fixedly inserted in the pipe joint 10 away from the first Take over one end of 201.
  • the pipe joint 10 is roughly cylindrical. One end of the pipe joint 10 away from the first connecting pipe 201 is screwed to the tamper nut 30, and the other end shrinks in the radial direction to form an abutting portion 12.
  • the abutting portion 12 is used for abutting the first connecting pipe 201, and the threaded section is used for threaded connection with the connecting nut 20.
  • the outer surface of the pipe joint 10 relatively close to the first connecting pipe 201 forms a first threaded section 13 threadedly connected to the connecting nut 20, and the first threaded section 13 is relatively close to the abutting portion 12.
  • the second connecting pipe 202 is fixedly inserted into the pipe joint 10, and the specific connection method may be a fixed connection method such as welding or riveting, and the tightness between the second connecting pipe 202 and the pipe joint 10 is ensured.
  • the outer side of the pipe joint 10 also includes an exposed smooth curved section (not labeled), so that after the pipe joint 10 is connected with the tamper nut 30 and the connecting nut 20, the user cannot directly remove the pipe joint 10 with ordinary tools.
  • the connecting nut 20 is substantially cylindrical, and the inner surface of the connecting nut 20 is provided with threads for connecting the pipe joint 10.
  • One end of the first connecting pipe 201 for inserting into the connecting nut 20 is set as a flared portion 2011, and the flaring portion 2011 is used to prevent the first connecting pipe 201 from being directly pulled out of the connecting nut 20, and the connecting nut 20 is also correspondingly set to be able to accommodate
  • the accommodating cavity of the first connecting tube 201 is provided with a shrinking opening structure to prevent the first connecting tube 201 from coming out, and the outer surface of the flaring portion 2011 is attached to the inner wall of the shrinking opening.
  • the contraction shape of the abutting portion 12 of the pipe joint 10 is also set corresponding to the flaring portion 2011 of the first connecting pipe 201 to ensure that the abutting portion 12 can be in close contact with and sealed with the first connecting pipe 201.
  • the connecting nut 20 is provided with a screwing part 23, and the screwing part 23 is used for the user to use a tool to screw the connecting nut 20 to the pipe joint 10.
  • the screwing portion 23 is approximately an outer hexagonal prism.
  • the shape of the screwing portion 23 may be set to other non-circular structures, such as triangular prisms, as long as it is convenient to screw the pipe joint 10 into the connecting nut 20 with a tool.
  • FIG. 8 is a schematic cross-sectional view of the tamper nut assembly 100 shown in FIG. 5;
  • FIG. 9 is a schematic cross-sectional view of the tamper nut assembly 100 shown in FIG. 7.
  • the tamper nut 30 is an outer hexagonal nut and is sleeved on the pipe joint 10.
  • the outer surface of the pipe joint 10 relatively far away from the first connecting pipe 201 forms a second thread that is threadedly connected to the tamper nut 30 Paragraph 14.
  • the tamper nut 30 in this embodiment is an outer hexagonal nut. This arrangement can make it more convenient and save effort for the installer to turn the tamper nut 30 on the one hand, and on the other hand, it can be matched with various existing wrench tools. , Increase the scope of selection of wrench tools.
  • the end of the pipe joint 10 away from the first connecting pipe 201 extends in the radial direction to form a stop 15 for preventing abutment against the tamper nut 30.
  • the tamper nut 30 is sleeved and threadedly connected to the pipe joint 10, and the inner diameter of the tamper nut 30 is smaller than the outer diameter of the stop portion 15, so that the tamper nut 30 is convenient for the installer to directly use tools for installation and connection.
  • a second threaded section 14 is provided between the stop 15 of the pipe joint 10 and the first threaded section 13, and the second threaded section 14 is used to connect the tamper nut 30.
  • the tamper nut 30 and the connecting nut 20 are installed on the same side of the pipe joint 10, and the inner size of the tamper nut 30 is smaller than the outer size of the screwing portion 23 of the connecting nut 20, so that the tamper nut 30 is not easy to install. It is lost, and it is convenient for the installer to install the connection directly.
  • the diameter of the second threaded section 14 is larger than the diameter of the first threaded section 13.
  • the screw threads of the first threaded section 13 and the second threaded section 14 are opposite, that is, the tightening direction of the tamper nut 30 screwed into the pipe joint 10 is opposite to the tightening direction of the connecting nut 20 screwed into the pipe joint 10 .
  • the tamper nut 30 can drive the pipe joint 10 and the connecting nut 20 to be further tightened while being tightened.
  • the thread of the first thread section 13 can be set as a right-hand thread
  • the thread of the second thread section 14 can be set as a left-hand thread
  • the tamper nut 30 is screwed into the pipe joint 10 in the direction of F1
  • the connecting nut 20 is in the direction of F2. Screw in the pipe joint 10.
  • the tamper nut 30 and the pipe joint 10 are tightened to the second threaded section 14 and abutted against the stopper 15, the tamper nut 30 is further tightened until the thread of the tamper nut 30 and The thread of the second threaded section 14 produces sliding teeth.
  • the anti-disassembly connection between the anti-disassembly nut 30 and the pipe joint 10 is ensured.
  • the tamper nut 30 can also be a nut of other shapes, such as a pentagonal nut, as long as it can be easily connected to the pipe joint 10; the first threaded section 13 and the second threaded section The thread directions of 14 can also be interchanged, as long as it can be realized that when the tamper nut 30 is screwed into the pipe joint 10, the pipe joint 10 and the connecting nut 20 can be further tightened.
  • the hardness of the tamper nut 30 is lower than the hardness of the pipe joint 10 and the connecting nut 20.
  • the screw connection between the connection nut 20 and the pipe joint 10 can be made. If the bite depth of the connection is greater than the bite depth of the tamper nut 30 and the pipe joint 10, the pipe joint 10 is screwed into the connection nut 20 more strongly than the tamper nut 30 is screwed into the connection nut 20; or the connection nut 20 and the pipe joint 10 The screwing length of the thread is greater than the screwing length of the tamper nut 30 and the pipe joint 10. With this arrangement, the anti-dismantling nut 30 is tightened firmly until it abuts against the stopper 15, and the connection between the connecting nut 20 and the pipe joint 10 is tight, but the phenomenon of slipping teeth is not easy to occur.
  • the thread on the inner side of the tamper nut 30 penetrates both ends of the tamper nut 30, so that the connection strength between the tamper nut 30 and the pipe joint 10 is better.
  • the inner thread of the tamper nut 30 only penetrates one end of the tamper nut 30, which makes the processing convenient and time-saving, and reduces the processing cost.
  • the tamper nut 30 drives the pipe joint 10 and the connecting nut 20 to further tighten , And the first connecting tube 201 is further compressed. After the first connecting tube 201 is compressed, continue to rotate the tamper nut 30 in the locking direction until the tamper nut 30 abuts against the stopper 15. At this time, due to the tamper The thread connection strength between the nut 30 and the pipe joint 10 is less than the thread connection strength between the connection nut 20 and the pipe joint 10, so there will be slippage between the tamper nut 30 and the pipe joint 10, that is, the tamper nut 30 The internal thread of the pipe joint 10 cannot be occluded with the thread of the first thread section 13.
  • the pipe joint 10 does not rotate; furthermore, because of the outer circumference of the pipe joint 10 Because it is a smooth curved surface, it is impossible to rotate the pipe joint 10 with other tools to loosen it, and the installation requirement that the pipe joint 10 and the connecting nut 20 cannot be detached is realized.
  • the air conditioning system using the tamper-proof nut assembly 100 can correspondingly prevent The leakage of the refrigerant of the indoor unit of the air-conditioning system is caused by human error, thereby avoiding the safety hazards caused by the air-conditioning system.
  • FIG. 10 is a schematic diagram of the structure of the tamper nut assembly 100 connected to the first connecting pipe 201 and the second connecting pipe 202 in another embodiment of the application;
  • FIG. 11 is the tamper nut assembly 100 shown in FIG. 10
  • One end of the connecting nut 20 is inserted into the first connecting pipe 201, the other end of the connecting nut 20 is screwed to the pipe joint 10, and the first connecting pipe 201 abuts in the connecting nut 20 through the pipe joint 10.
  • the pipe joint 10 and the connecting nut 20 are tightened to the maximum extent, the pipe joint 10 abuts the first connecting pipe 201, and the tamper nut 30 is threadedly connected to the end of the pipe joint 10 away from the first connecting pipe 201, and the second connecting pipe 202 is fixedly inserted. The end of the pipe joint 10 away from the first connecting pipe 201.
  • the pipe joint 10 is roughly cylindrical. One end of the pipe joint 10 away from the first connecting pipe 201 is screwed to the tamper nut 30, and the other end shrinks in the radial direction to form an abutting portion 12.
  • the abutting portion 12 is used for abutting the first connecting pipe 201, and the threaded section is used for threaded connection with the connecting nut 20.
  • the outer surface of the pipe joint 10 relatively close to the first connecting pipe 201 forms a first threaded section 13 threadedly connected to the connecting nut 20, and the first threaded section 13 is relatively close to the abutting portion 12.
  • the second connecting pipe 202 is fixedly inserted into the pipe joint 10, and the specific connection method may be a fixed connection method such as welding or riveting, and the tightness between the second connecting pipe 202 and the pipe joint 10 is ensured.
  • the outer side of the pipe joint 10 also includes an exposed smooth curved section (not labeled), so that after the pipe joint 10 is connected with the tamper nut 30 and the connecting nut 20, the user cannot directly remove the pipe joint 10 with ordinary tools.
  • FIG. 12 is a schematic cross-sectional view of the connection between the tamper nut assembly 100 shown in FIG. 10 and the first connecting pipe 201 and the second connecting pipe 202.
  • the connecting nut 20 is substantially cylindrical, and the inner surface of the connecting nut 20 is provided with threads for connecting the pipe joint 10.
  • One end of the first connecting pipe 201 for inserting into the connecting nut 20 is set as a flared portion 2011, and the flaring portion 2011 is used to prevent the first connecting pipe 201 from being directly pulled out of the connecting nut 20, and the connecting nut 20 is also correspondingly set to be able to accommodate
  • the accommodating cavity of the first connecting tube 201 is provided with a shrinking opening structure to prevent the first connecting tube 201 from coming out, and the outer surface of the flaring portion 2011 is attached to the inner wall of the shrinking opening.
  • the contraction shape of the abutting portion 12 of the pipe joint 10 is also set corresponding to the flaring portion 2011 of the first connecting pipe 201 to ensure that the abutting portion 12 can be in close contact with and sealed with the first connecting pipe 201.
  • the connecting nut 20 is provided with a screwing part 23, and the screwing part 23 is used for the user to use a tool to screw the connecting nut 20 to the pipe joint 10.
  • the screwing portion 23 is approximately an outer hexagonal prism.
  • the shape of the screwing portion 23 can be set to other non-circular structures, such as triangular prisms, as long as it is convenient to screw the pipe joint 10 into the connecting nut 20 with a tool.
  • the tamper nut 30 is an outer hexagonal nut, which is sleeved on the end of the pipe joint 10 relatively far away from the first connecting pipe 201.
  • the outer surface of the pipe joint 10 relatively far away from the first connecting pipe 201 forms a threaded connection with The second threaded section 14a of the tamper nut 30.
  • the tamper nut 30 in this embodiment is a hexagonal nut. This arrangement can make it more convenient and save effort for the installer to turn the tamper nut 30 on the one hand, and on the other hand, it can be matched and used with a variety of existing wrench tools. Increased the scope of selection of wrench tools.
  • the threads of the first threaded section 13 and the second threaded section 14a are the same, that is, the tightening direction of the tamper nut 30 screwed into the pipe joint 10 is opposite to the tightening direction of the connecting nut 20 screwed into the pipe joint 10 .
  • the tamper nut 30 can drive the pipe joint 10 and the connecting nut 20 to be further tightened while being tightened.
  • the threads of the first threaded section 13 and the second threaded section 14a may both be right-handed threads, the tamper nut 30 is screwed into the pipe joint 10 in the direction of F1, and the connecting nut 20 is screwed into the pipe joint 10 in the direction of F2.
  • the pipe joint 10 extends in the radial direction to form a stop portion 15 a, and the stop portion 15 a is located between the first threaded section 13 and the second threaded section 14 a for preventing abutment against the tamper nut 30.
  • the tamper nut 30 is disposed at an end of the pipe joint 10 relatively far away from the first connecting pipe 201, and the inner diameter of the tamper nut 30 is smaller than the outer diameter of the stop portion 15a, so that the tamper nut 30 is convenient for the installer to directly install and connect with tools.
  • the tamper nut 30 and the pipe joint 10 are tightened to the second threaded section 14a and abutted against the stop portion 15a, the tamper nut 30 is further tightened until the thread of the tamper nut 30 and The thread of the second threaded section 14a produces sliding teeth.
  • the anti-disassembly connection between the anti-disassembly nut 30 and the pipe joint 10 is ensured.
  • the tamper nut 30 can also be a nut of another shape, for example, a pentagonal nut in appearance, as long as it can be easily connected to the pipe joint 10.
  • the hardness of the tamper nut 30 is lower than the hardness of the pipe joint 10 and the connecting nut 20.
  • the screw connection between the connection nut 20 and the pipe joint 10 can be made. If the bite depth of the connection is greater than the bite depth of the tamper nut 30 and the pipe joint 10, the pipe joint 10 is screwed into the connection nut 20 more strongly than the tamper nut 30 is screwed into the connection nut 20; or the connection nut 20 and the pipe joint 10 The screwing length of the thread is greater than the screwing length of the tamper nut 30 and the pipe joint 10. With this arrangement, the tamper nut 30 is tightened firmly until it abuts the stop portion 15a, and the connection between the connecting nut 20 and the pipe joint 10 is tight, but the phenomenon of slipping teeth is not easy to occur.
  • the thread on the inner side of the tamper nut 30 penetrates both ends of the tamper nut 30, so that the connection strength between the tamper nut 30 and the pipe joint 10 is better.
  • the inner thread of the tamper nut 30 only penetrates one end of the tamper nut 30, so that the processing is convenient and time-saving, and the processing cost is reduced.
  • the nut 20 is screwed into the first threaded section 13 of the pipe joint 10 for fixing, and then the connecting nut 20 is tightened, and the pipe joint 10 abuts on the flaring portion 2011 of the first connecting pipe 201, so that the wall clamp of the flaring portion 2011 Hold between the pipe joint 10 and the connecting nut 20, rotate the tamper nut 30 in the tightening direction F1, the tamper nut 30 drives the pipe joint 10 and the connecting nut 20 to further tighten, and the first connecting pipe 201 is further compressed, After the first connecting pipe 201 is compressed, continue to rotate the tamper nut 30 in the locking direction until the tamper nut 30 abuts the stop portion 15a.
  • the anti-disassembly nut assembly provided by the present application can realize the anti-disassembly effect between the connection nut and the pipe joint by installing the tamper nut on the connection nut or the pipe joint, and further realize the difference between the first connection pipe and the second connection pipe. Anti-disassembly connection between.
  • the present application also provides an air conditioning system (not shown in the figure).
  • the air conditioning system includes the aforementioned tamper nut assembly 100 and other necessary components in the air conditioning system connected to the tamper nut assembly 100, such as compressors and heat exchangers. , Pipes, etc., so that the air-conditioning system can operate normally.

Abstract

一种防拆螺母组件（100）及空调系统，防拆螺母组件（100）用于固定第一接管（201）及第二接管（202），防拆螺母组件（100）包括管接头（10）、连接螺母（20）及防拆螺母（30），连接螺母（20）一端固定于第一接管（201），管接头（10）插接有第二接管（202）并相互固定，管接头（10）穿设并螺纹连接于连接螺母（20）的另一端，防拆螺母（30）套设并螺纹连接于管接头（10）或连接螺母（20）。防拆螺母（30）用于进一步紧固管接头（10）与连接螺母（20）之间的连接并防止两者拆卸。

Description

防拆螺母组件及空调系统
相关申请
本申请要求申请日为2019年12月04日，申请号为201922150254.2；申请日为2019年12月04日，201922150964.5；申请日为2019年12月04日，201922153440.1的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及制冷设备技术领域，特别是涉及一种防拆螺母组件及空调系统。
背景技术
目前可燃性制冷剂的空调系统室内侧使用的用于连接接管的结构中，通过连接螺母紧固连接管接头和接管，接管的一端安装在连接螺母内，安装时，通过对连接螺母施加锁紧力矩，使得连接螺母转动以与管接头紧密连接，以此将接管与管接头锁紧，相反，若反向转动连接螺母，则可以将接管与管接头拆除，其不能满足可燃性制冷剂空调系统室内侧的安装需求。
发明内容
根据本申请的各种实施例，提供一种防拆螺母组件，用于固定第一接管及第二接管，所述防拆螺母组件包括管接头、连接螺母及防拆螺母，所述连接螺母一端固定于所述第一接管，所述管接头插接有所述第二接管并相互固定，所述管接头穿设并螺纹连接于所述连接螺母的另一端，所述防拆螺母套设并螺纹连接于所述管接头或所述连接螺母。
上述防拆螺母组件具有以下优点：
防拆螺母组件能够通过将防拆螺母安装在连接螺母或管接头上，以实现连接螺母与管接头之间的防拆卸作用，并进一步实现第一接管与第二接管之间的防拆卸连接。
在其中一个实施例中，所述防拆螺母套设于所述连接螺母并螺纹连接于所述连接螺母相对远离所述第一接管的一端；所述连接螺母内表面形成螺纹连接于所述管接头的内螺纹，所述连接螺母外表面形成螺纹连接于所述防拆螺母的外螺纹，所述内螺纹与所述外螺纹的螺纹旋向相反。
在其中一个实施例中，所述防拆螺母与所述连接螺母螺纹旋合长度小于所述连接螺母与所述管接头螺纹旋合长度。
在其中一个实施例中，所述连接螺母的外表面设有螺纹段及平滑段，且所述防拆螺母与所述螺纹段螺纹连接；所述管接头包括外表面为非圆形状的安装部；所述防拆螺母为外六角螺母。
在其中一个实施例中，所述防拆螺母套设所述管接头并螺纹连接于所述管接头。
在其中一个实施例中，所述管接头相对靠近所述第一接管的一端形成螺纹连接于所述连接螺母的第一螺纹段，所述管接头的另一端形成螺纹连接于所述防拆螺母的第二螺纹段，所述第一螺纹段与所述第二螺纹段的螺纹旋向相反。
在其中一个实施例中，所述管接头相对靠近所述第一接管的一端形成螺纹连接于所述连接螺母的第一螺纹段，所述管接头相对远离所述第一接管的一端形成螺纹连接于所述防拆螺母的第二螺纹段，所述第一螺纹段与所述第二螺纹段的螺纹旋向相同。
在其中一个实施例中，所述管接头的一端沿径向延伸形成止挡部，所述止挡部抵接所述防拆螺母。
在其中一个实施例中，所述防拆螺母与所述管接头螺纹旋合长度小于所述连接螺母与所述管接头螺纹旋合长度。
在其中一个实施例中，所述连接螺母包括外表面为非圆形状的旋拧部；所述防拆螺母为外六角螺母。
在其中一个实施例中，所述防拆螺母内侧的螺纹延伸至所述防拆螺母(30)的两端；或，
所示防拆螺母内侧的螺纹仅延伸至所述防拆螺母的一端。
本申请还提供一种空调系统，包括第一接管、第二接管及防拆螺母组件， 所述防拆螺母组件为如上述任意一项所述的防拆螺母组件。
在其中一个实施例中，所述第一接管与所述管接头通过焊接固定，所述第二接管通过所述管接头抵接固定于所述连接螺母内。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为本申请一实施例中防拆螺母组件与第一接管及第二接管连接的结构示意图。
图2为图1所示防拆螺母组件中连接螺母与防拆螺母的结构示意图。
图3为图1所示防拆螺母组件中防拆螺母与连接螺母旋紧状态的剖视示意图。
图4为图3所示防拆螺母组件中防拆螺母与连接螺母未旋紧状态的剖视示意图。
图5为本申请另一实施例中防拆螺母组件与第一接管及第二接管连接的结构示意图。
图6为图5所示防拆螺母组件中管接头的结构示意图。
图7为图5所示防拆螺母组件中防拆螺母与管接头未旋紧状态的结构示意图。
图8为图5所示防拆螺母组件的剖视示意图。
图9为图7所示防拆螺母组件中的剖视示意图。
图10为本申请另一实施例中防拆螺母组件与第一接管及第二接管连接的结构示意图。
图11为图10所示防拆螺母组件中管接头的结构示意图。
图12为图10所示防拆螺母组件与第一接管及第二接管连接的剖视示意图。
图中，100、防拆螺母组件；10、管接头；11、安装部；12、抵接部；13、第一螺纹段；14、14a、第二螺纹段；15、15a、止挡部；20、连接螺母；21、螺纹段；22、平滑段；23、旋拧部；30、防拆螺母；201、第一接管；2011、扩口部；202、第二接管。
具体实施方式
以下将对本申请提供的防拆螺纹组件及空调系统作进一步说明。
本申请提供一种防拆螺母组件100，用于安装在空调室内机组中，以防止人为误拆冷媒连接管道。
当然，上述的防拆螺母组件100还能够用于其他需要安装防拆卸结构的设备中，例如冰箱。
目前由于可燃性制冷剂空调系统的广泛应用，其空调系统室内侧的国标安装要求为制冷剂管道的不可拆卸连接，以防止用户自行拆卸而引起安全隐患。为了进一步优化对于可燃性制冷剂空调系统的制冷剂管路系统，并实现制冷剂管路之间的不可拆卸连接，防拆螺母组件100上还包括防拆螺母30，使得管接头10与连接螺母20之间为不可拆卸连接。
防拆螺母组件100包括管接头10、连接螺母20及防拆螺母30，管接头10用于与连接螺母20螺纹连接并同时将第一接管201固定于连接螺母20内，连接螺母20用于与管接头10相连，防拆螺母30用于进一步紧固管接头10与连接螺母20之间的连接并防止两者拆卸。
防拆螺母组件100通过以下三个实施例进行说明。
实施例一：
请参阅图1，图1为本申请一实施例中防拆螺母组件100与第一接管201及第二接管202连接的结构示意图。
连接螺母20的一端插接第一接管201，连接螺母20另一端与管接头10螺接，第一接管201通过管接头10抵接于连接螺母20内。当管接头10与连接螺母20旋紧至最大程度时，管接头10与第一接管201相抵，防拆螺母30螺纹 连接于连接螺母20远离第一接管201的一端，第二接管202固定插设于管接头10远离第一接管201的一端。
当防拆螺母30与连接螺母20旋紧时，空调的普通用户无法直接拆除管接头10与连接螺母20之间的连接，以此达到使空调室内机组管道无法拆卸的目的。
管接头10大致呈圆柱状，管接头10远离第一接管201的一端沿径向延伸并形成安装部11，另一端沿径向收缩并形成抵接部12，管接头10的外表面靠近抵接部12的位置设有第一螺纹段13。安装部11用于使用工具将管接头10螺纹连接于连接螺母20，抵接部12用于抵接第一接管201，螺纹段21用于与连接螺母20螺纹连接。
第二接管202固定插接于安装部11内，具体的连接方式可以通过焊接或者铆接等固定连接方式，并保证第二接管202与安装部11之间的密封性。
在其中一个实施例中，为便于使用工具将管接头10旋进连接螺母20，安装部11大致为外六角的棱柱。
可以理解，在其他实施方式中，安装部11的形状可以设置为其他非圆结构，例如三角棱柱，只要能够实现便于用工具将管接头10旋进连接螺母20即可。
请一并参阅图2至图4，图2为图1所示防拆螺母组件100中连接螺母20与防拆螺母30的结构示意图；图3为图1所示防拆螺母组件100中防拆螺母30与连接螺母20旋紧状态的剖视示意图；图4为图3所示防拆螺母组件100中防拆螺母30与连接螺母20未旋紧状态的剖视示意图。
连接螺母20大致为圆柱螺母，内表面设有用于连接管接头10的螺纹。第一接管201用于插接于连接螺母20的一端设为扩口部2011，该扩口部2011用于防止第一接管201直接拔出连接螺母20，连接螺母20也相应设置为可以容置第一接管201的容置腔体，并通过设置收缩口结构以防止第一接管201脱出，扩口部2011的外表面贴合于收缩口内壁。对应地，管接头10的抵接部12的收缩形状也与第一接管201的扩口部2011相应设置，以确保抵接部12能够与第一接管201紧密接触并密封。
当管接头10通过第一螺纹段13与连接螺母20螺接至底端时，管接头10的抵接部12抵持于第一接管201的扩口部2011的内壁，使得第一接管201密封固定于管接头10与连接螺母20之间。
防拆螺母30为外六角螺母，套接于连接螺母20远离第一接管201的一端，对应地，连接螺母20的外表面设有相应地螺纹段21，螺纹段21用于与防拆螺母30连接。连接螺母20还设有与螺纹段21相连且直径相等的平滑段22，平滑段22用于防止防拆螺母30直接旋出连接螺母20。防拆螺母30设置于管接头10与连接螺母20之间，且防拆螺母30内部直径小于安装部11外侧直径，使得防拆螺母30在安装时不容易丢失，且便于安装者直接安装连接。
当防拆螺母30与连接螺母20旋紧至螺纹段21底端时，再进一步旋紧防拆螺母30，直至防拆螺母30的螺纹与螺纹段21的表面产生滑牙，此时，防拆螺母30很难通过工具继续旋紧进或退出，且连接螺母20也不能够进一步地被旋紧或松开，由此，能够进一步保证防拆螺母30与连接螺母20的防拆卸连接。
本实施例中的防拆螺母30为外六角螺母，如此设置，一方面是可使安装者转动防拆螺母30时更加方便并节省力气，另一方面能够与现有的多种扳手工具匹配使用，增加了选择扳手工具的范围。
可以理解，在其他实施方式中，防拆螺母30也可以选择其他形状的螺母，例如外形为五角螺母等，只要能够实现便于与连接螺母20连接即可；连接螺母20也可以通过其他方式以制止防拆螺母30的直接旋出，例如在连接螺母20的外表面凸设止挡部的方式，只要能够实现防止防拆螺母30直接旋出连接螺母20即可。
在其中一个实施例中，防拆螺母30的硬度低于管接头10和连接螺母20的硬度，如此设置，防拆螺母30与连接螺母20发生滑牙时，使防拆螺母30内侧的螺纹产生损坏，而管接头10和连接螺母20上的螺纹均未被损坏。
在其中一个实施例中，连接螺母20外表面形成螺纹连接于防拆螺母30的外螺纹，连接螺母20内表面形成螺纹连接于管接头10的内螺纹，外螺纹与内螺纹的旋向相反，即防拆螺母30旋入连接螺母20的旋紧方向同连接螺母20旋入管接头10的旋紧方向相反。如此设置，防拆螺母30在旋紧的同时能够带 动连接螺母20与管接头10进一步旋紧，且能够防止连接螺母20被旋出管接头10。具体地，连接螺母20内表面可以设为右旋螺纹，外表面相反地设为左旋螺纹，安装者将防拆螺母30旋入连接螺母20的旋紧方向F1同管接头10旋入连接螺母20的旋紧方向F2分别如图1所示。但是，当安装者固定连接螺母20，并通过工具将管接头10旋进连接螺母20时，旋紧方向与图中F2的方向相反。
在其中一个实施例中，为使防拆螺母30与连接螺母20之间的螺纹连接强度小于连接螺母20与管接头10之间的螺纹连接强度，可使连接螺母20与管接头10之间螺接的咬合深度大于防拆螺母30与连接螺母20螺接的咬合深度，则管接头10旋进连接螺母20的力度大于防拆螺母30旋进连接螺母20的力度。如此设置，当防拆螺母30的螺纹与螺纹段21的表面产生滑牙，连接螺母20与管接头10之间则不易产生滑牙现象。
在其中一个实施例中，在防拆螺母30与连接螺母20发生滑牙时，为了防止防拆螺母30的锁紧力造成管接头10与连接螺母20之间的压紧力过大而压坏第一接管201，连接螺母20与管接头10螺纹旋合长度大于防拆螺母30与连接螺母20螺纹旋合长度；或者，可将连接螺母20与管接头10的螺接牙数设置为大于防拆螺母30与连接螺母20的螺接牙数。
在其中一个实施例中，防拆螺母30内侧的螺纹贯穿防拆螺母30的两端，以使得防拆螺母30与连接螺母20的连接强度更好。
在其中一个实施例中，防拆螺母30内侧螺纹仅贯穿防拆螺母30的一端，使得加工便捷省时，且减少加工成本。
以下具体阐述防拆螺母组件100与第一接管201及第二接管202的连接过程：
如图3至图4所示，安装时，先将第一接管201设有扩口部2011的一端套入连接螺母20内，并从连接螺母20的一端伸出，用扳手将管接头10沿F2旋入连接螺母20的另一端进行固定，随后将管接头10旋紧并抵接于第一接管201的扩口部2011上，使扩口部2011的壁夹持在管接头10和连接螺母20之间，沿旋紧方向F1转动防拆螺母30，防拆螺母30带动连接螺母20与管接头10进一步转紧，并使第一接管201接管被进一步压紧，在第一接管201被压紧后， 继续沿锁紧方向转动防拆螺母30，此时由于防拆螺母30与连接螺母20之间的螺纹连接强度小于连接螺母20与管接头10之间的螺纹连接强度，因此防拆螺母30与连接螺母20之间会发生滑牙现象，也就是防拆螺母30的内螺纹与螺纹段21的外螺纹无法咬合，此时无论是沿锁紧方向还是沿拧松方向转动防拆螺母30，连接螺母20均不发生转动；再者，由于平滑段22的外周为光滑曲面，因此也无法通过其他工具转动连接螺母20使其发生松动，实现了连接螺母20不可拆卸的要求，防止了制冷剂因人为误拆而产生的泄露。
实施例二：
请一并参阅图5至图7，图5为本申请另一实施例中防拆螺母组件100与第一接管201及第二接管202连接的结构示意图；图6为图5所示防拆螺母组件100中管接头10的结构示意图；图7为图5所示防拆螺母组件100中防拆螺母30与管接头10未旋紧状态的结构示意图。
连接螺母20的一端插接第一接管201，连接螺母20另一端与管接头10螺接，第一接管201通过管接头10抵接于连接螺母20内。当管接头10与连接螺母20旋紧至最大程度时，管接头10与第一接管201相抵，防拆螺母30螺纹连接于管接头10，第二接管202固定插设于管接头10远离第一接管201的一端。
当防拆螺母30与管接头10旋紧时，空调的普通用户无法直接拆除管接头10与连接螺母20之间的连接，以此达到使空调室内机组管道无法拆卸的目的。
管接头10大致呈圆柱状，管接头10远离第一接管201的一端与防拆螺母30螺接，另一端沿径向收缩并形成抵接部12。抵接部12用于抵接第一接管201，螺纹段用于与连接螺母20螺纹连接。管接头10相对靠近第一接管201的外表面形成螺纹连接于连接螺母20的第一螺纹段13，且第一螺纹段13相对靠近抵接部12。
第二接管202固定插接于管接头10内，具体的连接方式可以通过焊接或者铆接等固定连接方式，并保证第二接管202与管接头10之间的密封性。
此外，管接头10的外侧还包括一段外露光滑曲面段(未标号)，使得管接头10与防拆螺母30及连接螺母20连接后，用户无法普通工具对管接头10 直接拆除。
连接螺母20大致为圆柱状，连接螺母20的内表面设有用于连接管接头10的螺纹。第一接管201用于插接于连接螺母20的一端设为扩口部2011，该扩口部2011用于防止第一接管201直接拔出连接螺母20，连接螺母20也相应设置为可以容置第一接管201的容置腔体，并通过设置收缩口结构以防止第一接管201脱出，扩口部2011的外表面贴合于收缩口内壁。对应地，管接头10的抵接部12的收缩形状也与第一接管201的扩口部2011相应设置，以确保抵接部12能够与第一接管201紧密接触并密封。
当管接头10通过第一螺纹段13与连接螺母20螺接至底端时，管接头10的抵接部12抵持于第一接管201的扩口部2011的内壁，使得第一接管201密封固定于管接头10与连接螺母20之间。
连接螺母20设有旋拧部23，旋拧部23用于供用户使用工具将连接螺母20螺纹连接于管接头10。
在其中一个实施例中，为便于使用工具将管接头10旋进连接螺母20，旋拧部23大致为外六角的棱柱。
可以理解，在其他实施方式中，旋拧部23的形状可以设置为其他非圆结构，例如三角棱柱，只要能够实现便于用工具将管接头10旋进连接螺母20即可。
请一并参阅图8至图9，图8为图5所示防拆螺母组件100的剖视示意图；图9为图7所示防拆螺母组件100的剖视示意图。
在其中一个实施例中，防拆螺母30为外六角螺母，套接于管接头10，对应地，管接头10相对远离第一接管201的外表面形成螺纹连接于防拆螺母30的第二螺纹段14。
本实施例中的防拆螺母30为外六角螺母，如此设置，一方面是可使安装者转动防拆螺母30时更加方便并节省力气，另一方面能够与现有的多种扳手工具匹配使用，增加了选择扳手工具的范围。
在其中一个实施例中，管接头10远离第一接管201的一端沿径向延伸形成止挡部15，用于防止抵接防拆螺母30。防拆螺母30套设并螺纹连接于管接 头10，且防拆螺母30内侧直径小于止挡部15的外侧直径，使得防拆螺母30便于安装者直接用工具进行安装连接。
在其中一个实施例中，管接头10的止挡部15与第一螺纹段13之间设有第二螺纹段14，第二螺纹段14用于连接防拆螺母30。如此设置，防拆螺母30与连接螺母20安装于管接头10的同一侧，且防拆螺母30的内侧尺寸小于连接螺母20旋拧部23的外部尺寸，使得防拆螺母30在安装时不容易丢失，且便于安装者直接安装连接。
优选地，第二螺纹段14的直径大于第一螺纹段13的直径。
在其中一个实施例中，第一螺纹段13与第二螺纹段14的螺纹旋向相反，即防拆螺母30旋入管接头10的旋紧方向同连接螺母20旋入管接头10的旋紧方向相反。如此设置，防拆螺母30在旋紧的同时能够带动管接头10与连接螺母20进一步旋紧。具体地，第一螺纹段13的螺纹可以设为右旋螺纹，第二螺纹段14的螺纹可以设为左旋螺纹，防拆螺母30沿F1的方向旋入管接头10，连接螺母20沿F2的方向旋入管接头10。
在其中一个实施例中，防拆螺母30与管接头10旋紧至第二螺纹段14并抵接于止挡部15时，再进一步旋紧防拆螺母30，直至防拆螺母30的螺纹与第二螺纹段14的螺纹产生滑牙，此时，防拆螺母30很难通过工具继续旋紧进或退出，且连接螺母20也不能够进一步地被旋紧或松开，由此，能够进一步保证防拆螺母30与管接头10的防拆卸连接。
可以理解，在其他实施方式中，防拆螺母30也可以选择其他形状的螺母，例如外形为五角螺母等，只要能够实现便于与管接头10连接即可；第一螺纹段13及第二螺纹段14的螺纹旋向也可以相互调换，只要能够实现防拆螺母30旋入管接头10时能够带动管接头10与连接螺母20进一步旋紧即可。
在其中一个实施例中，防拆螺母30的硬度低于管接头10和连接螺母20的硬度，如此设置，防拆螺母30与管接头10发生滑牙时，使防拆螺母30内侧的螺纹产生损坏，而管接头10和连接螺母20上的第一螺纹段13的螺纹均未被损坏。
在其中一个实施例中，为使防拆螺母30与管接头10之间的螺纹连接强 度小于连接螺母20与管接头10之间的螺纹连接强度，可使连接螺母20与管接头10之间螺接的咬合深度大于防拆螺母30与管接头10螺接的咬合深度，则管接头10旋进连接螺母20的力度大于防拆螺母30旋进连接螺母20的力度；或者连接螺母20与管接头10螺纹旋合长度大于防拆螺母30与管接头10螺纹旋合长度。如此设置，用力旋紧防拆螺母30直至与止挡部15相抵接，连接螺母20与管接头10之间的连接紧密但是不易产生滑牙现象。
在其中一个实施例中，防拆螺母30内侧的螺纹贯穿防拆螺母30的两端，以使得防拆螺母30与管接头10的连接强度更好。
在其中一个实施例中，防拆螺母30内侧螺纹仅贯穿防拆螺母30的一端，使得加工便捷省时，且减少加工成本。
以下具体阐述防拆螺母组件100与第一接管201及第二接管202的连接过程：
如图5至图9所示，安装时，先将第一接管201设有扩口部2011的一端套入连接螺母20内，并从连接螺母20的一端伸出，将防拆螺母30套设于管接头10，再将连接螺母20用扳手沿F2方向旋入管接头10的第一螺纹段13进行固定，随后将连接螺母20旋紧并使管接头10抵接于第一接管201的扩口部2011上，使扩口部2011的壁夹持在管接头10和连接螺母20之间，沿旋紧方向F1转动防拆螺母30，防拆螺母30带动管接头10与连接螺母20进一步转紧，并使第一接管201被进一步压紧，在第一接管201被压紧后，继续沿锁紧方向转动防拆螺母30直至防拆螺母30抵接于止挡部15，此时由于防拆螺母30与管接头10之间的螺纹连接强度小于连接螺母20与管接头10之间的螺纹连接强度，因此防拆螺母30与管接头10之间会发生滑牙现象，也就是防拆螺母30的内螺纹与第一螺纹段13的螺纹无法咬合，此时无论是沿锁紧方向还是沿拧松方向转动防拆螺母30，管接头10均不发生转动；再者，由于管接头10的外周为光滑曲面，因此也无法通过其他工具转动管接头10使其发生松动，实现了管接头10与连接螺母20之间不可拆卸的安装要求，应用该防拆螺母组件100的空调系统，能够相应防止空调系统的室内机组制冷剂因人为误拆而产生的泄露，进而避免空调系统由此造成的安全隐患。
实施例三：
请参阅图10及图11，图10为本申请另一实施例中防拆螺母组件100与第一接管201及第二接管202连接的结构示意图；图11为图10所示防拆螺母组件100中管接头10的结构示意图。
连接螺母20的一端插接第一接管201，连接螺母20另一端与管接头10螺接，第一接管201通过管接头10抵接于连接螺母20内。当管接头10与连接螺母20旋紧至最大程度时，管接头10与第一接管201相抵，防拆螺母30螺纹连接于管接头10远离第一接管201的一端，第二接管202固定插设于管接头10远离第一接管201的一端。
当防拆螺母30与管接头10旋紧时，空调的普通用户无法直接拆除管接头10与连接螺母20之间的连接，以此达到使空调室内机组管道无法拆卸的目的。
管接头10大致呈圆柱状，管接头10远离第一接管201的一端与防拆螺母30螺接，另一端沿径向收缩并形成抵接部12。抵接部12用于抵接第一接管201，螺纹段用于与连接螺母20螺纹连接。管接头10相对靠近第一接管201的外表面形成螺纹连接于连接螺母20的第一螺纹段13，且第一螺纹段13相对靠近抵接部12。
第二接管202固定插接于管接头10内，具体的连接方式可以通过焊接或者铆接等固定连接方式，并保证第二接管202与管接头10之间的密封性。
此外，管接头10的外侧还包括一段外露光滑曲面段(未标号)，使得管接头10与防拆螺母30及连接螺母20连接后，用户无法普通工具对管接头10直接拆除。
请参阅图12，图12为图10所示防拆螺母组件100与第一接管201及第二接管202连接的剖视示意图。
连接螺母20大致为圆柱状，连接螺母20的内表面设有用于连接管接头10的螺纹。第一接管201用于插接于连接螺母20的一端设为扩口部2011，该扩口部2011用于防止第一接管201直接拔出连接螺母20，连接螺母20也相应设置为可以容置第一接管201的容置腔体，并通过设置收缩口结构以防止第一 接管201脱出，扩口部2011的外表面贴合于收缩口内壁。对应地，管接头10的抵接部12的收缩形状也与第一接管201的扩口部2011相应设置，以确保抵接部12能够与第一接管201紧密接触并密封。
当管接头10通过第一螺纹段13与连接螺母20螺接至底端时，管接头10的抵接部12抵持于第一接管201的扩口部2011的内壁，使得第一接管201密封固定于管接头10与连接螺母20之间。
连接螺母20设有旋拧部23，旋拧部23用于供用户使用工具将连接螺母20螺纹连接于管接头10。
在其中一个实施例中，为便于使用工具将管接头10旋进连接螺母20，旋拧部23大致为外六角的棱柱。
可以理解，在其他实施方式中，旋拧部23的形状可以设置为其他非圆结构，例如三角棱柱，只要能够实现便于用工具将管接头10旋进连接螺母20即可。
在其中一个实施例中，防拆螺母30为外六角螺母，套接于管接头10相对远离第一接管201的一端，对应地，管接头10相对远离第一接管201的外表面形成螺纹连接于防拆螺母30的第二螺纹段14a。
本实施例中的防拆螺母30为六角螺母，如此设置，一方面是可使安装者转动防拆螺母30时更加方便并节省力气，另一方面能够与现有的多种扳手工具匹配使用，增加了选择扳手工具的范围。
在其中一个实施例中，第一螺纹段13与第二螺纹段14a的螺纹旋向相同，即防拆螺母30旋入管接头10的旋紧方向同连接螺母20旋入管接头10的旋紧方向相反。如此设置，防拆螺母30在旋紧的同时能够带动管接头10与连接螺母20进一步旋紧。具体地，第一螺纹段13与第二螺纹段14a的螺纹可以均设为右旋螺纹，防拆螺母30沿F1的方向旋入管接头10，连接螺母20沿F2的方向旋入管接头10。
在其中一个实施例中，管接头10沿径向延伸形成止挡部15a，止挡部15a位于第一螺纹段13与第二螺纹段14a之间，用于防止抵接防拆螺母30。防拆螺母30设置于管接头10相对远离第一接管201的一端，且防拆螺母30内部直径 小于止挡部15a的外侧直径，使得防拆螺母30便于安装者直接用工具进行安装连接。
在其中一个实施例中，防拆螺母30与管接头10旋紧至第二螺纹段14a并抵接于止挡部15a时，再进一步旋紧防拆螺母30，直至防拆螺母30的螺纹与第二螺纹段14a的螺纹产生滑牙，此时，防拆螺母30很难通过工具继续旋紧进或退出，且连接螺母20也不能够进一步地被旋紧或松开，由此，能够进一步保证防拆螺母30与管接头10的防拆卸连接。
可以理解，在其他实施方式中，防拆螺母30也可以选择其他形状的螺母，例如外形为五角螺母等，只要能够实现便于与管接头10连接即可。
在其中一个实施例中，防拆螺母30的硬度低于管接头10和连接螺母20的硬度，如此设置，防拆螺母30与管接头10发生滑牙时，使防拆螺母30内侧的螺纹产生损坏，而管接头10和连接螺母20上的第一螺纹段13的螺纹均未被损坏。
在其中一个实施例中，为使防拆螺母30与管接头10之间的螺纹连接强度小于连接螺母20与管接头10之间的螺纹连接强度，可使连接螺母20与管接头10之间螺接的咬合深度大于防拆螺母30与管接头10螺接的咬合深度，则管接头10旋进连接螺母20的力度大于防拆螺母30旋进连接螺母20的力度；或者连接螺母20与管接头10螺纹旋合长度大于防拆螺母30与管接头10螺纹旋合长度。如此设置，用力旋紧防拆螺母30直至与止挡部15a相抵接，连接螺母20与管接头10之间的连接紧密但是不易产生滑牙现象。
在其中一个实施例中，防拆螺母30内侧的螺纹贯穿防拆螺母30的两端，以使得防拆螺母30与管接头10的连接强度更好。
在另一个实施例中，防拆螺母30内侧螺纹仅贯穿防拆螺母30的一端，使得加工便捷省时，且减少加工成本。
以下具体阐述防拆螺母组件100与第一接管201及第二接管202的连接过程：
如图10至图12所示，安装时，先将第一接管201设有扩口部2011的一端套入连接螺母20内，并从连接螺母20的一端伸出，用扳手沿F2方向将连接螺 母20旋入管接头10的第一螺纹段13进行固定，随后将连接螺母20旋紧，并使管接头10抵接于第一接管201的扩口部2011上，使扩口部2011的壁夹持在管接头10和连接螺母20之间，沿旋紧方向F1转动防拆螺母30，防拆螺母30带动管接头10与连接螺母20进一步转紧，并使第一接管201被进一步压紧，在第一接管201被压紧后，继续沿锁紧方向转动防拆螺母30直至防拆螺母30抵接于止挡部15a，此时由于防拆螺母30与管接头10之间的螺纹连接强度小于连接螺母20与管接头10之间的螺纹连接强度，因此防拆螺母30与管接头10之间会发生滑牙现象，也就是防拆螺母30的内螺纹与第一螺纹段13的螺纹无法咬合，此时无论是沿锁紧方向还是沿拧松方向转动防拆螺母30，管接头10均不发生转动；再者，由于管接头10的外周为光滑曲面，因此也无法通过其他工具转动管接头10使其发生松动，实现了管接头10与连接螺母20之间不可拆卸的安装要求，应用该防拆螺母组件100的空调系统，能够相应防止空调系统的室内机组制冷剂因人为误拆而产生的泄露，进而避免空调系统由此造成的安全隐患。
本申请提供的一种防拆螺母组件能够通过将防拆螺母安装在连接螺母或管接头上，以实现连接螺母与管接头之间的防拆卸作用，并进一步实现第一接管与第二接管之间的防拆卸连接。
本申请还提供一种空调系统(图未示)，该空调系统包括上述的防拆螺母组件100及连接于防拆螺母组件100的其他空调系统中必要的零部件，例如压缩机、换热器、管道等，以使得空调系统能够正常运行。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (15)

  1. 一种防拆螺母组件，用于固定第一接管及第二接管，其特征在于，所述防拆螺母组件包括管接头、连接螺母及防拆螺母，所述连接螺母一端固定于所述第一接管，所述管接头插接有所述第二接管并相互固定，所述管接头穿设并螺纹连接于所述连接螺母的另一端，所述防拆螺母套设并螺纹连接于所述管接头或所述连接螺母。
  2. 根据权利要求1所述的防拆螺母组件，其特征在于，所述防拆螺母套设于所述连接螺母并螺纹连接于所述连接螺母相对远离所述第一接管的一端。
  3. 根据权利要求2所述的防拆螺母组件，其特征在于，所述连接螺母内表面形成螺纹连接于所述管接头的内螺纹，所述连接螺母外表面形成螺纹连接于所述防拆螺母的外螺纹，所述内螺纹与所述外螺纹的螺纹旋向相反。
  4. 根据权利要求2所述的防拆螺母组件，其特征在于，所述防拆螺母与所述连接螺母螺纹旋合长度小于所述连接螺母与所述管接头螺纹旋合长度。
  5. 根据权利要求2所述的防拆螺母组件，其特征在于，所述连接螺母的外表面设有螺纹段及平滑段，且所述防拆螺母与所述螺纹段螺纹连接；所述管接头包括外表面为非圆形状的安装部；所述防拆螺母为外六角螺母。
  6. 根据权利要求1所述的防拆螺母组件，其特征在于，所述防拆螺母套设所述管接头并螺纹连接于所述管接头。
  7. 根据权利要求6所述的防拆螺母组件，其特征在于，所述管接头相对靠近所述第一接管的一端形成螺纹连接于所述连接螺母的第一螺纹段，所述管接头的另一端形成螺纹连接于所述防拆螺母的第二螺纹段，所述第一螺纹段与所述第二螺纹段的螺纹旋向相反。
  8. 根据权利要求7所述的防拆螺母组件，其特征在于，第一螺纹段的直径小于第二螺纹段的直径。
  9. 根据权利要求6所述的防拆螺母组件，其特征在于，所述管接头相对靠近所述第一接管的一端形成螺纹连接于所述连接螺母的第一螺纹段，所述管接头相对远离所述第一接管的一端形成螺纹连接于所述防拆螺母的第二螺纹段，所述第一螺纹段与所述第二螺纹段的螺纹旋向相同。
  10. 根据权利要求6～9任意一项所述的防拆螺母组件，其特征在于，所述管接头的一端沿径向延伸形成止挡部，所述止挡部抵接所述防拆螺母。
  11. 根据权利要求6所述的防拆螺母组件，其特征在于，所述防拆螺母与所述管接头螺纹旋合长度小于所述连接螺母与所述管接头螺纹旋合长度。
  12. 根据权利要求6所述的防拆螺母组件，其特征在于，所述连接螺母包括外表面为非圆形状的旋拧部；所述防拆螺母为外六角螺母。
  13. 根据权利要求1所述的防拆螺母组件，其特征在于，所述防拆螺母内侧的螺纹延伸至所述防拆螺母的两端；或，
    所示防拆螺母内侧的螺纹仅延伸至所述防拆螺母的一端。
  14. 一种空调系统，包括第一接管、第二接管及防拆螺母组件，其特征在于，所述防拆螺母组件为如权利要求1至13任意一项所述的防拆螺母组件。
  15. 根据权利要求14所述的空调系统，其特征在于，所述第一接管与所述管接头通过焊接固定，所述第二接管通过所述管接头抵接固定于所述连接螺母内。
PCT/CN2020/115439 2019-12-04 2020-09-16 防拆螺母组件及空调系统 WO2021109674A1 (zh)

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