CN211738303U - Anti-dismantling nut assembly and air conditioning system - Google Patents
Anti-dismantling nut assembly and air conditioning system Download PDFInfo
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- CN211738303U CN211738303U CN201922150254.2U CN201922150254U CN211738303U CN 211738303 U CN211738303 U CN 211738303U CN 201922150254 U CN201922150254 U CN 201922150254U CN 211738303 U CN211738303 U CN 211738303U
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Abstract
The utility model relates to a prevent tearing open nut assembly and air conditioning system for fixed first takeover and second takeover, prevent tearing open nut assembly and include coupling, coupling nut and prevent tearing open the nut, coupling nut one end is fixed in first takeover, the coupling is pegged graft and is had second takeover and reciprocal anchorage, the coupling wear to establish and threaded connection in coupling nut, prevent tearing open the nut cover and establish coupling nut and threaded connection in coupling nut keeps away from relatively the one end of first takeover. This prevent tearing open nut assembly can be through will prevent tearing open the nut and install the effect in order to realize the anti-disassembly of coupling nut and coupling on coupling nut to further realize that the anti-disassembly of first takeover and second takeover is connected.
Description
Technical Field
The utility model relates to a refrigeration plant field especially relates to a prevent tearing open nut component and air conditioning system.
Background
In the structure for connecting the connecting pipe used at the indoor side of the existing air-conditioning system with the flammable refrigerant, the connecting pipe joint and the connecting pipe are fastened through the connecting nut, one end of the connecting pipe is installed in the connecting nut, and during installation, locking torque is applied to the connecting nut, so that the connecting nut rotates to be tightly connected with the pipe joint, the connecting pipe and the pipe joint are locked, on the contrary, if the connecting nut rotates reversely, the connecting pipe and the pipe joint can be detached, and the installation requirement of the indoor side of the flammable refrigerant air-conditioning system cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a tamper nut assembly that addresses the above-mentioned problems. This prevent tearing open nut assembly can be through will prevent tearing open the nut and install the effect in order to realize the anti-disassembly of coupling nut and coupling on coupling nut to further realize that the anti-disassembly of first takeover and second takeover is connected.
The utility model provides an anti-disassembly nut assembly for fixed first takeover and second takeover, anti-disassembly nut assembly includes coupling, coupling nut and anti-disassembly nut, coupling nut one end is fixed in first takeover, the coupling is pegged graft and is had the second takeover and reciprocal anchorage, the coupling wear to establish and threaded connection in coupling nut's the other end, anti-disassembly nut cover establish coupling nut and threaded connection in coupling nut keeps away from relatively the one end of first takeover.
Further, the inner surface of the connecting nut forms an internal thread which is in threaded connection with the pipe joint, the outer surface of the connecting nut forms an external thread which is in threaded connection with the anti-dismounting nut, and the thread turning direction of the internal thread is opposite to that of the external thread.
Further, the screwing length of the anti-dismounting nut and the connecting nut is smaller than that of the connecting nut and the pipe joint.
Furthermore, the outer surface of the connecting nut is provided with a thread section and a smooth section, and the anti-dismounting nut is in threaded connection with the thread section.
Further, the pipe joint includes a mounting portion having a non-circular outer surface.
Further, the anti-dismounting nut is an outer hexagonal nut.
Further, the threads on the inner side of the tamper nut extend to both ends of the tamper nut.
Further, the threads on the inside of the tamper nut extend only to one end of the tamper nut.
The utility model discloses still an air conditioning system, take over and prevent tearing open nut component including first takeover, second, prevent tearing open nut component for as above-mentioned arbitrary one prevent tearing open nut component.
Further, the first connecting pipe and the pipe joint are fixed through welding, and the second connecting pipe is abutted and fixed in the connecting nut through the pipe joint.
The utility model provides a pair of prevent tearing open nut assembly can install the effect in order to realize the anti-disassembly of coupling nut and coupling on coupling nut through preventing tearing open the nut to further realize that the anti-disassembly of first takeover and second takeover is connected.
Drawings
Fig. 1 is a schematic structural view illustrating a connection between a tamper nut assembly and a first connection pipe and a second connection pipe according to an embodiment of the present invention;
FIG. 2 is a schematic view of the coupling nut and the anti-tamper nut of the anti-tamper nut assembly shown in FIG. 1;
FIG. 3 is a cross-sectional view of the anti-tamper nut assembly of FIG. 1 with the coupling nut in a tightened condition;
FIG. 4 is a cross-sectional view of the tamper nut assembly of FIG. 3 with the coupling nut in an unthreaded state.
Description of the main elements
The present invention is described in further detail with reference to the drawings and the detailed description.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating a connection between an anti-removal nut assembly 100 and a first connection pipe 201 and a second connection pipe 202 according to an embodiment of the present invention.
The utility model provides a prevent tearing open nut component 100 for install in the air conditioning indoor unit, with prevent that the refrigerant connecting tube is torn open to the people for the mistake.
Of course, the anti-disassembly nut assembly 100 described above can also be used in other devices that require the installation of anti-disassembly structures, such as refrigerators.
At present, because of the wide application of the flammable refrigerant air-conditioning system, the national standard installation requirement of the indoor side of the air-conditioning system is the non-detachable connection of refrigerant pipelines, so that the potential safety hazard caused by the self-detachment of a user is prevented. In order to further optimize the refrigerant piping system for flammable refrigerant air conditioning systems and to achieve a non-removable connection between the refrigerant pipes, the anti-removal nut assembly 100 further includes an anti-removal nut 30 thereon, such that the pipe joint 10 is non-removably connected to the coupling nut 20.
The tamper nut assembly 100 includes a pipe joint 10, a coupling nut 20, and a tamper nut 30, the pipe joint 10 being adapted to be threadedly coupled to the coupling nut 20 while fixing a first adapter 201 in the coupling nut 20, the coupling nut 20 being adapted to be coupled to the pipe joint 10, the tamper nut 30 being adapted to further secure a connection between the pipe joint 10 and the coupling nut 20 and prevent the detachment thereof.
One end of the connection nut 20 is inserted into the first connection pipe 201, the other end of the connection nut 20 is screwed with the pipe joint 10, and the first connection pipe 201 is abutted to the connection nut 20 through the pipe joint 10. When the pipe joint 10 and the connecting nut 20 are screwed to the maximum extent, the pipe joint 10 abuts against the first connecting pipe 201, the anti-disassembly nut 30 is screwed to one end of the connecting nut 20 far away from the first connecting pipe 201, and the second connecting pipe 202 is fixedly inserted into one end of the pipe joint 10 far away from the first connecting pipe 201.
When the anti-disassembly nut 30 is screwed with the connection nut 20, a common user of the air conditioner cannot directly disassemble the connection between the pipe joint 10 and the connection nut 20, so that the purpose of preventing the pipelines of the indoor unit of the air conditioner from being disassembled is achieved.
The pipe joint 10 is substantially cylindrical, one end of the pipe joint 10 away from the first connecting pipe 201 extends along the radial direction to form a mounting part 11, the other end shrinks along the radial direction to form an abutting part 12, and a threaded part 13 is arranged on the outer surface of the pipe joint 10 close to the abutting part 12. The mounting portion 11 is used to screw the pipe joint 10 to the coupling nut 20 using a tool, the abutment portion 12 is used to abut the first adapter 201, and the threaded section 21 is used to screw with the coupling nut 20.
The second connecting pipe 202 is fixedly inserted into the mounting portion 11, and the specific connection mode can be a fixed connection mode such as welding or riveting, and the sealing performance between the second connecting pipe 202 and the mounting portion 11 is ensured.
In one embodiment, to facilitate the use of a tool to thread coupling boss 10 into coupling nut 20, mounting portion 11 is generally an outer hexagonal prism.
It will be appreciated that in other embodiments, the mounting portion 11 may be shaped in other non-circular configurations, such as a triangular prism, as long as the facility for tool-screwing the pipe joint 10 into the coupling nut 20 is achieved.
Referring to fig. 2 to 4, fig. 2 is a schematic structural view of the coupling nut 20 and the anti-tamper nut 30 of the anti-tamper nut assembly 100 shown in fig. 1; FIG. 3 is a cross-sectional view of the anti-tamper nut assembly 100 of FIG. 1 with the anti-tamper nut 30 and the coupling nut 20 tightened together; fig. 4 is a cross-sectional view of the tamper nut assembly 100 of fig. 3 with the tamper nut 30 and the coupling nut 20 in an unthreading state.
The coupling nut 20 is a substantially cylindrical nut, the inner surface of which is provided with a thread for coupling the pipe joint 10. The first connecting pipe 201 is used for being inserted into one end of the connecting nut 20 and is provided with an expanded part 2011, the expanded part 2011 is used for preventing the first connecting pipe 201 from being directly pulled out of the connecting nut 20, the connecting nut 20 is correspondingly provided with an accommodating cavity capable of accommodating the first connecting pipe 201, the first connecting pipe 201 is prevented from being separated through the arrangement of a contraction port structure, and the outer surface of the expanded part 2011 is attached to the inner wall of the contraction port. Correspondingly, the contracted shape of the abutting portion 12 of the pipe joint 10 is also provided in correspondence with the flared portion 2011 of the first adapter pipe 201 to ensure that the abutting portion 12 can be brought into close contact and sealed with the first adapter pipe 201.
When the pipe joint 10 is screwed to the bottom end by the threaded portion 13 and the coupling nut 20, the abutting portion 12 of the pipe joint 10 abuts against the inner wall of the flared portion 2011 of the first adapter pipe 201, so that the first adapter pipe 201 is sealingly fixed between the pipe joint 10 and the coupling nut 20.
The anti-dismantling nut 30 is an outer hexagon nut, and is sleeved at one end of the connecting nut 20 far away from the first connecting pipe 201, correspondingly, the outer surface of the connecting nut 20 is provided with a corresponding thread section 21, and the thread section 21 is used for being connected with the anti-dismantling nut 30. The coupling nut 20 is further provided with a smooth section 22 of equal diameter connected to the threaded section 21, the smooth section 22 being adapted to prevent the removal nut 30 from being directly unscrewed from the coupling nut 20. The anti-dismantling nut 30 is arranged between the pipe joint 10 and the connecting nut 20, and the inner diameter of the anti-dismantling nut 30 is smaller than the outer diameter of the mounting part 11, so that the anti-dismantling nut 30 is not easy to lose during mounting, and is convenient for direct mounting and connection of an installer.
When the anti-disassembly nut 30 and the connecting nut 20 are screwed to the bottom end of the threaded section 21, the anti-disassembly nut 30 is further screwed until the threads of the anti-disassembly nut 30 and the surface of the threaded section 21 generate sliding teeth, at the moment, the anti-disassembly nut 30 is difficult to be screwed in or out continuously through a tool, and the connecting nut 20 cannot be further screwed or loosened, so that the anti-disassembly connection of the anti-disassembly nut 30 and the connecting nut 20 can be further ensured.
The nut 30 of preventing tearing open in this embodiment is hexagon nut, so set up, can make the installer rotate when preventing tearing open the nut 30 more convenient and save laborsaving on the one hand, and on the other hand can match with current multiple wrench tool and use, has increased the scope of selecting wrench tool.
It is understood that in other embodiments, the anti-detachment nut 30 may also be a nut with other shapes, such as a pentagonal nut, etc., as long as the convenient connection with the connection nut 20 can be realized; the coupling nut 20 may be configured to prevent the detachment-preventing nut 30 from being directly unscrewed, for example, a stopper may be protruded on an outer surface of the coupling nut 20, as long as the detachment-preventing nut 30 is prevented from being directly unscrewed from the coupling nut 20.
In one embodiment, the hardness of the tamper nut 30 is lower than the hardness of the pipe joint 10 and the coupling nut 20, so that the threads on the inner side of the tamper nut 30 are damaged when the tamper nut 30 and the coupling nut 20 are stripped, and the threads on the pipe joint 10 and the coupling nut 20 are not damaged.
In one embodiment, the outer surface of the coupling nut 20 forms an external thread that is threadedly coupled to the tamper nut 30, and the inner surface of the coupling nut 20 forms an internal thread that is threadedly coupled to the pipe joint 10, the external thread and the internal thread being in opposite directions, i.e., the tamper nut 30 is screwed into the coupling nut 20 in the opposite direction to the coupling nut 20 is screwed into the pipe joint 10. With this arrangement, the anti-removal nut 30 can drive the coupling nut 20 to be further screwed with the pipe joint 10 while being screwed, and can prevent the coupling nut 20 from being unscrewed from the pipe joint 10. Specifically, the coupling nut 20 may have a right-handed thread on the inner surface and a left-handed thread on the outer surface, respectively, and the tightening direction F1 in which the installer screws the tamper nut 30 into the coupling nut 20 and the tightening direction F2 in which the tube fitting 10 is screwed into the coupling nut 20 are as shown in fig. 1. However, when the installer fixes the coupling nut 20 and screws the coupling boss 10 into the coupling nut 20 by a tool, the screwing direction is opposite to the direction of F2 in the drawing.
In one embodiment, in order to make the screw coupling strength between the tamper nut 30 and the coupling nut 20 smaller than the screw coupling strength between the coupling nut 20 and the pipe joint 10, the engagement depth of the screw coupling between the coupling nut 20 and the pipe joint 10 may be made larger than the engagement depth of the screw coupling between the tamper nut 30 and the coupling nut 20, and the force with which the pipe joint 10 is screwed into the coupling nut 20 is larger than the force with which the tamper nut 30 is screwed into the coupling nut 20. With this arrangement, when the thread of the tamper nut 30 and the surface of the threaded section 21 are formed with the sliding teeth, the sliding teeth are not easily generated between the coupling nut 20 and the pipe joint 10.
In one embodiment, in order to prevent the first adapter 201 from being crushed due to excessive pressing force between the pipe joint 10 and the coupling nut 20 caused by the locking force of the tamper nut 30 when the tamper nut 30 and the coupling nut 20 are slipped off, the screwing length of the coupling nut 20 and the pipe joint 10 is longer than that of the tamper nut 30 and the coupling nut 20; alternatively, the number of the thread of the coupling nut 20 and the pipe joint 10 may be set to be greater than the number of the thread of the tamper nut 30 and the coupling nut 20.
In one embodiment, the threads inside the tamper nut 30 penetrate both ends of the tamper nut 30 to make the connection between the tamper nut 30 and the coupling nut 20 stronger.
In one embodiment, the inner thread of the tamper nut 30 only penetrates through one end of the tamper nut 30, so that the machining is convenient and time-saving, and the machining cost is reduced.
The following describes the connection process of the anti-disassembly nut assembly 100 with the first adapter 201 and the second adapter 202 in detail:
as shown in fig. 3 to 4, during installation, one end of the first adapter 201, which is provided with the flared portion 2011, is sleeved into the coupling nut 20 and extends out of one end of the coupling nut 20, the pipe joint 10 is screwed into the other end of the coupling nut 20 along F2 by using a wrench to be fixed, then the pipe joint 10 is screwed and abutted on the flared portion 2011 of the first adapter 201, so that the wall of the flared portion 2011 is clamped between the pipe joint 10 and the coupling nut 20, the anti-disassembly nut 30 is rotated along the screwing direction F1, the anti-disassembly nut 30 drives the coupling nut 20 and the pipe joint 10 to be further screwed, the first adapter 201 is further pressed, after the first adapter 201 is pressed, the anti-disassembly nut 30 is further rotated along the locking direction, at this time, because the thread connection strength between the anti-disassembly nut 30 and the coupling nut 20 is smaller than the thread connection strength between the coupling nut 20 and the pipe joint 10, the thread slippage phenomenon can occur between the anti-disassembly nut 30 and the coupling nut 20, that is, the internal thread of the anti-tamper nut 30 cannot be engaged with the external thread of the threaded section 21, and at this time, the connecting nut 20 does not rotate no matter the anti-tamper nut 30 is rotated in the locking direction or the loosening direction; moreover, because the periphery of the smooth section 22 is a smooth curved surface, the connecting nut 20 cannot be rotated by other tools to be loosened, the requirement that the connecting nut 20 is not detachable is met, and leakage of the refrigerant caused by manual mistaken detachment is prevented.
The utility model also provides an air conditioning system (not shown), this air conditioning system include foretell prevent tearing open nut component 100 and connect in preventing tearing open nut component 100 other air conditioning system in necessary spare part, for example compressor, heat exchanger, pipeline etc. to make air conditioning system can normal operating.
The utility model provides a pair of prevent tearing open nut component 100 can be through installing on coupling nut 20 with the effect of the anti-disassembly of realizing coupling nut 20 and coupling 10 with prevent tearing open nut 30 to further realize that the anti-disassembly of first takeover 201 and second takeover 202 is connected.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a prevent tearing open nut assembly for fixed first takeover (201) and second takeover (202), its characterized in that, prevent tearing open nut assembly includes coupling (10), coupling nut (20) and prevent tearing open nut (30), coupling nut (20) one end is fixed in first takeover (201), coupling (10) are pegged graft and are equipped with second takeover (202) and reciprocal anchorage, coupling (10) wear to establish and threaded connection in the other end of coupling nut (20), prevent tearing open nut (30) cover and locate coupling nut (20) and threaded connection in coupling nut (20) keep away from relatively the one end of first takeover (201).
2. The tamper-evident nut assembly as claimed in claim 1, wherein the inner surface of the coupling nut (20) forms an internal thread screwed to the pipe joint (10), and the outer surface of the coupling nut (20) forms an external thread screwed to the tamper-evident nut (30), the internal thread having a thread direction opposite to that of the external thread.
3. The tamper nut assembly according to claim 1, wherein a screwing length of the tamper nut (30) to the coupling nut (20) is smaller than a screwing length of the coupling nut (20) to the pipe joint (10).
4. The tamper nut assembly according to claim 1, wherein the coupling nut (20) has an outer surface provided with a threaded section (21) and a smooth section (22), and the tamper nut (30) is threadedly coupled to the threaded section (21).
5. The tamper-evident nut assembly as claimed in claim 1, wherein the pipe joint (10) comprises a mounting portion (11) having an outer surface of a non-circular shape.
6. The tamper nut assembly of claim 1 wherein the tamper nut (30) is an outer hex nut.
7. The tamper nut assembly according to claim 1, characterized in that the thread inside the tamper nut (30) extends to both ends of the tamper nut (30).
8. The tamper nut assembly according to claim 1, characterized in that the thread inside the tamper nut (30) extends only to one end of the tamper nut (30).
9. An air conditioning system comprising a first connecting pipe (201), a second connecting pipe (202) and a tamper nut assembly, wherein the tamper nut assembly is the tamper nut assembly according to any one of claims 1 to 8.
10. Air conditioning system according to claim 9, characterized in that the first adapter tube (201) is fixed by welding to the pipe connection (10), and the second adapter tube (202) is fixed by abutment of the pipe connection (10) inside the coupling nut (20).
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922150254.2U CN211738303U (en) | 2019-12-04 | 2019-12-04 | Anti-dismantling nut assembly and air conditioning system |
| JP2022528221A JP7413529B2 (en) | 2019-12-04 | 2020-09-16 | Anti-separation nut assembly and air conditioning system |
| PCT/CN2020/115439 WO2021109674A1 (en) | 2019-12-04 | 2020-09-16 | Disassembly-prevention nut assembly and air conditioning system |
| EP20895221.8A EP4067720A4 (en) | 2019-12-04 | 2020-09-16 | Disassembly-prevention nut assembly and air conditioning system |
| KR1020227022331A KR20220103184A (en) | 2019-12-04 | 2020-09-16 | Anti-disassembly nut assembly and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922150254.2U CN211738303U (en) | 2019-12-04 | 2019-12-04 | Anti-dismantling nut assembly and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211738303U true CN211738303U (en) | 2020-10-23 |
Family
ID=72875145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922150254.2U Active CN211738303U (en) | 2019-12-04 | 2019-12-04 | Anti-dismantling nut assembly and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211738303U (en) |
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2019
- 2019-12-04 CN CN201922150254.2U patent/CN211738303U/en active Active
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