CN108006047B - Connecting pipe nut, connecting pipe assembly and air conditioner - Google Patents
Connecting pipe nut, connecting pipe assembly and air conditioner Download PDFInfo
- Publication number
- CN108006047B CN108006047B CN201711232003.8A CN201711232003A CN108006047B CN 108006047 B CN108006047 B CN 108006047B CN 201711232003 A CN201711232003 A CN 201711232003A CN 108006047 B CN108006047 B CN 108006047B
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- wedge
- nut
- nut body
- rotating part
- shaped
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- 210000002445 nipple Anatomy 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004378 air conditioning Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
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- 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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
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- 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
- F16L19/005—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 comprising locking means for the threaded member
Abstract
The embodiment of the invention provides a connecting pipe nut, a connecting pipe assembly and an air conditioner, relates to the technical field of air conditioners, and can solve the problems that an anti-disassembly connecting pipe nut in the prior art is complex in structure and high in production cost. The adapter nut comprises a nut body and a rotating part; the opposite end surfaces of the nut body and the rotating part are respectively provided with a wedge-shaped tooth and a wedge-shaped groove which are connected in a matched manner; when a tightening torque is applied to the rotating part, the rotating part can transmit the torque to the nut body through the pushing of the wedge-shaped teeth and the wedge-shaped grooves; when a loosening torque is applied to the rotating part, the wedge-shaped teeth can slide out of the wedge-shaped grooves, so that the nut body is separated from the rotating part; the pushing surface of the wedge-shaped tooth is provided with a first clamping structure, the pushing surface of the wedge-shaped groove is provided with a second clamping structure, and the first clamping structure can be clamped in the second clamping structure; the first latch structure is disengageable from the second latch structure when a unscrewing torque is applied to the rotating portion. The invention is used for connecting air-conditioning pipelines.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a connecting pipe nut, a connecting pipe assembly and an air conditioner.
Background
In the standard EN60335-2-40 of the air conditioning industry, the indoor side of the air conditioner requiring flammable refrigerant does not allow the detachable connection structure to be used, because the connection between the pipe joint and the pipe connection nut, if loosened, may cause refrigerant to leak into the room, thereby causing a safety accident. Although some anti-disassembly connecting pipe nuts exist in the prior art, the structure is complex, the consumed materials are more, and therefore the machining process is complex and the production cost is high.
Disclosure of Invention
The embodiment of the invention provides a connecting pipe nut, a connecting pipe assembly and an air conditioner, and can solve the problems that an anti-disassembly connecting pipe nut in the prior art is complex in structure and high in production cost.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
on one hand, the embodiment of the invention provides a connecting pipe nut which comprises a nut body and a rotating part;
the nut body is cylindrical, the rotating part is prismatic, the nut body and the rotating part are both provided with hollow parts penetrating through opposite end surfaces of the nut body and the rotating part, and the hollow parts are cylinders; the inner side wall of the nut body is provided with internal threads;
the opposite end surfaces of the nut body and the rotating part are respectively provided with a wedge-shaped tooth and a wedge-shaped groove which are connected in a matched manner; when a tightening torque is applied to the rotating portion, the rotating portion can transmit the torque to the nut body through the abutting surfaces of the wedge-shaped teeth and the wedge-shaped grooves; when a loosening torque is applied to the rotating portion, the wedge teeth can slide out of the wedge grooves, so that the nut body and the rotating portion are separated;
the pushing surface of the wedge-shaped tooth is provided with a first clamping structure, the pushing surface of the wedge-shaped groove is provided with a second clamping structure, and the first clamping structure can be clamped in the second clamping structure when the nut body and the rotating part are assembled in the direction along the central axis of the nut body; the first latch structure is disengageable from the second latch structure when a unscrewing torque is applied to the rotating portion.
In another aspect, an embodiment of the present invention provides a connection pipe assembly, including a connection pipe, a detachable nut disposed at one end of the connection pipe, and any one of the connection pipe nuts disposed at the other end of the connection pipe.
In another aspect, an embodiment of the present invention provides an air conditioner, including any one of the above-mentioned connecting pipe assemblies.
According to the connecting pipe nut, the connecting pipe assembly and the air conditioner provided by the embodiment of the invention, the connecting pipe nut comprises a nut body and a rotating part; the nut body is cylindrical, the rotating part is prismatic, the nut body and the rotating part are both provided with hollow parts which penetrate through opposite end surfaces of the nut body and the rotating part, and the hollow parts are cylinders; the inner side wall of the nut body is provided with internal threads; the opposite end surfaces of the nut body and the rotating part are respectively provided with a wedge-shaped tooth and a wedge-shaped groove which are connected in a matched manner; when a tightening torque is applied to the rotating part, the rotating part can transmit the torque to the nut body through the pushing of the wedge-shaped teeth and the wedge-shaped grooves; when a loosening torque is applied to the rotating part, the wedge-shaped teeth can slide out of the wedge-shaped grooves, so that the nut body is separated from the rotating part; the pushing surface of the wedge-shaped tooth is provided with a first clamping structure, the pushing surface of the wedge-shaped groove is provided with a second clamping structure, and the first clamping structure can be clamped in the second clamping structure when the nut body and the rotating part are assembled along the direction of the central shaft of the nut body; the first latch structure is disengageable from the second latch structure when a unscrewing torque is applied to the rotating portion. Compared with the prior art, the connecting pipe nut provided by the embodiment of the invention is clamped by the first clamping structure on the abutting surface of the wedge-shaped teeth and the second clamping structure on the abutting surface of the wedge-shaped groove, so that the nut body is connected with the rotating part, then the screwing torque is applied to the rotating part, and the torque can be transmitted to the nut body through the abutting surfaces of the wedge-shaped teeth and the wedge-shaped groove, so that the nut body is stably connected with the pipe joint; when the loosening torque is applied to the rotating part, the wedge-shaped teeth can slide out of the wedge-shaped groove, so that the nut body is separated from the rotating part, the loosening torque cannot be transmitted to the nut body, the connection between the nut body and the pipe joint is prevented from being loosened, and the disassembly prevention function is realized. The adapter tube nut in the embodiment of the invention has a simpler structure and consumes less materials, so that the processing technology is simplified, and the production cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an inflation connection pipe nut and an early warning connection pipe nut provided in the prior art;
fig. 2 is a first schematic structural diagram of a nut body according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a nut body according to an embodiment of the present invention;
fig. 4 is a third schematic structural diagram of a nut body according to an embodiment of the present invention;
FIG. 5 is a first schematic structural diagram of a rotating portion according to an embodiment of the present invention;
FIG. 6 is a second schematic structural diagram of a rotating portion according to an embodiment of the present invention;
FIG. 7 is a third schematic structural view of a rotating portion according to an embodiment of the present invention;
FIG. 8 is a first structural schematic diagram of a nozzle nut according to an embodiment of the present invention;
fig. 9 is a second structural schematic diagram of the adapter nut according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram three of a connecting pipe nut provided in the embodiment of the present invention;
fig. 11 is a fourth structural schematic diagram of the adapter nut according to the embodiment of the present invention;
fig. 12 is a fifth structural schematic diagram of the adapter nut according to the embodiment of the present invention;
fig. 13 is a sixth structural schematic diagram of a nozzle nut according to an embodiment of the present invention;
fig. 14 is a seventh structural schematic diagram of the adapter nut according to the embodiment of the present invention;
FIG. 15 is an enlarged view of area A of FIG. 14;
fig. 16 is a schematic structural diagram eight of the adapter nut according to the embodiment of the present invention;
FIG. 17 is an enlarged view of area B of FIG. 16;
FIG. 18 is a fourth schematic structural view of a rotating portion according to an embodiment of the present invention;
fig. 19 is a fourth schematic structural view of a nut body according to an embodiment of the present invention;
FIG. 20 is a first schematic view of a connection structure of a nipple nut and a pipe joint according to an embodiment of the present invention;
fig. 21 is a second schematic view of a connection structure of a nipple nut and a pipe joint according to an embodiment of the present invention;
FIG. 22 is a first schematic structural view of a connector assembly according to an embodiment of the present invention;
fig. 23 is a second schematic structural diagram of a connecting tube assembly according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, when an air-conditioning indoor unit in the prior art leaves a factory, an inflation pipe connection nut 01 and an early warning pipe connection nut 02 are generally required to be installed on a pipe joint part of an evaporator, gas (generally nitrogen) can be filled after the evaporator is produced to maintain pressure, until the air-conditioning indoor unit is transported to a user for installation and connection, whether gas inside the evaporator leaks is judged through a convex point of the early warning pipe connection nut 02, if the gas does not leak, the gas in the evaporator of the air-conditioning indoor unit is exhausted through the inflation pipe connection nut 01, then the inflation pipe connection nut 01 and the early warning pipe connection nut 02 are removed (where the inflation pipe connection nut 01 and the early warning pipe connection nut 02 are required to be detachable), and finally, a connecting pipe assembly is connected with the pipe joint of the; here a disassembly-proof union nut is required.
An embodiment of the present invention provides a nipple nut, as shown in fig. 2 to 21, including a nut body 10 and a rotating portion 20; the nut body 10 is cylindrical, the rotating part 20 is prismatic, and both the nut body 10 and the rotating part 20 have hollow parts penetrating through opposite end surfaces thereof, and the hollow parts are cylinders; the inner side wall of the nut body 10 is provided with internal threads 11; the opposite end surfaces of the nut body 10 and the rotating part 20 are respectively provided with a wedge-shaped tooth 12 and a wedge-shaped groove 21 which are connected in a matching way; when a tightening torque is applied to the rotating portion 20, the rotating portion 20 can transmit the torque to the nut body 10 by the urging of the wedge teeth 12 and the wedge grooves 21, so that the nut body 10 is tightened with the pipe joint 41; when a loosening torque is applied to the rotating portion 20, the wedge teeth 12 can slide out of the wedge grooves 21, so that the nut body 10 and the rotating portion 20 are separated; the pushing surface 121 of the wedge-shaped tooth is provided with a first clamping structure 13, the pushing surface 211 of the wedge-shaped groove is provided with a second clamping structure 22, and when the nut body 10 and the rotating part 20 are assembled along the direction of the central shaft of the nut body 10, the first clamping structure 13 can be clamped in the second clamping structure 22; when a unscrewing torque is applied to the rotating part 20, the first catch formation 13 can be disengaged from the second catch formation 22. Wherein the pushing surface is a force transmission surface between the wedge-shaped teeth 12 and the wedge-shaped groove 21 when a tightening torque is applied to the rotating part.
In the embodiment of the present invention, the specific shapes, sizes, and the like of the first clamping structure 13 and the second clamping structure 22 are not limited, and those skilled in the art can set the shapes according to actual situations as long as the first clamping structure 13 and the second clamping structure 22 can be clamped in a matching manner.
The nut body 10 and the rotating portion 20 may be made of various materials, for example, the nut body 10 may be made of an iron material, a copper material or a stainless steel material, and the rotating portion 20 may be made of brass, plastic or other composite materials, which are not limited in the embodiments of the present invention. In practical applications, the nut body 10 is generally made of brass, and the rotating portion 20 is generally made of plastic, so that the connection is reliable and the cost is low, and the manufacturability is good and the processing technology is simple.
Referring to fig. 8, in which the nut body 10 and the rotating portion 20 are snap-fitted in the X1 direction, as shown in fig. 9, by applying a tightening torque in the X2 direction to the rotating portion 20, the rotating portion 20 transmits the tightening torque to the nut body 10, so that the nut body 10 is rotated in the X2 direction to be tightened with the coupling 41; by applying the unscrewing torque along the X3 direction to the rotating part 20, since the unscrewing torque is much larger than the clamping force between the first clamping structure 13 on the nut body 10 and the second clamping structure 22 on the rotating part 20, the first clamping structure 13 can be separated from the second clamping structure 22, so that the rotating part 20 is separated from the nut body 10 to achieve the anti-disassembly function, and the air tightness and the safety of the product are ensured.
Therefore, compared with the prior art, the connecting pipe nut provided by the embodiment of the invention is clamped by the first clamping structure on the abutting surface of the wedge-shaped teeth and the second clamping structure on the abutting surface of the wedge-shaped groove, so that the nut body is connected with the rotating part, then the screwing torque is applied to the rotating part, and the torque can be transmitted to the nut body through the abutting surfaces of the wedge-shaped teeth and the wedge-shaped groove, so that the nut body is stably connected with the pipe joint; when the loosening torque is applied to the rotating part, the wedge-shaped teeth can slide out of the wedge-shaped groove, so that the nut body is separated from the rotating part, the loosening torque cannot be transmitted to the nut body, the connection between the nut body and the pipe joint is prevented from being loosened, and the disassembly prevention function is realized. The adapter tube nut in the embodiment of the invention has a simpler structure and consumes less materials, so that the processing technology is simplified, and the production cost is reduced.
Further, referring to fig. 3 to 5 and 8, the pushing surface 121 of the wedge-shaped tooth is parallel to the central axis of the nut body 10, that is, the pushing surface 121 of the wedge-shaped tooth is perpendicular to the end surface of the nut body 10. Since the wedge teeth 12 and the wedge grooves 21 are connected in a matching manner, the pushing surfaces 211 of the wedge grooves are also perpendicular to the end surface of the rotating part 20. Such a structure facilitates the torque transmission between the wedge teeth 12 and the wedge grooves 21, i.e., between the rotating portion 20 and the nut body 10.
Preferably, the adapter nut includes a plurality of wedge-shaped teeth 12, the wedge-shaped teeth 12 are all disposed on the end surface of the nut body 10, and a plurality of wedge-shaped grooves 21 are correspondingly disposed on the end surface of the rotating portion 20. The plurality of wedge teeth 12 are evenly distributed along the circumferential direction of the end surface of the nut body 10. The size, the arrangement number, the distribution rule and the like of the wedge-shaped teeth 12 and the wedge-shaped grooves 21 are not limited in the embodiment of the invention. The skilled person can determine the setting size and the setting number of the wedge teeth 12 and the wedge grooves 21 by taking the comprehensive consideration of the size of the wedge teeth 12 and the wedge grooves 21, the size of the nut body 10 and the rotating part 20, the magnitude of the transmission torque, the production cost, and the like. Referring to fig. 4 and 5, in practical application, 2 wedge-shaped teeth 12 and 2 wedge-shaped grooves 21 are generally provided to meet the requirement, and the cost is low.
Referring to fig. 3 to 5, the first latch structure 13 is a protrusion, and the second latch structure 22 is a groove. In practical applications, the first latch structure 13 may be a groove, and the second latch structure 22 may be a protrusion. The embodiment of the present invention is not limited thereto.
Further, referring to fig. 3 to 5 and 14 to 17, the cross section of the protrusion along the pushing surface 121 parallel to the wedge-shaped teeth is trapezoidal, and the groove is a square groove; the width W1 of the groove is greater than the width W2 of the bottom of the protrusion and less than the width W3 of the top of the protrusion. When making trapezoidal arch on the nut body 10 and the square groove on the rotating part 20 assemble like this, trapezoidal bellied bottom is light earlier in leading-in square groove, and trapezoidal bellied mid portion is through the department that equals with square groove size, then extrudeing trapezoidal arch with strength in to square groove again for nut body 10 and rotating part 20 fastening cooperation, be difficult for droing during vertical installation, and easy to assemble. In practical application, the width W3 of the top of the projection can be set to be 2mm, and generally satisfies 0.1mm ≦ W3-W1 ≦ 1 mm; W1-W2 is not less than 0.5mm and not more than 1 mm.
Referring to fig. 13, the height H3 of the rotating portion 20 is generally 8mm to 10 mm. The height H1 of the groove is greater than or equal to the height H2 of the projection in a direction parallel to the central axis of the nut body 10. In practical applications, the height H1 of the groove is generally set to be 4mm to 5mm, and the height H2 of the protrusion is generally set to be 3.95mm to 4.95mm, i.e., H1-H2 ≈ 0.05 mm.
Referring to fig. 18 and 19, the depth D1 of the groove is greater than or equal to the thickness D2 of the protrusion. In practical applications, the depth D1 of the groove is generally set to be between 1.55mm and 2.05mm, and the thickness D2 of the protrusion is generally set to be between 1.5mm and 2.0mm, and generally, D1-D2 is approximately equal to 0.05 mm.
The assembly process of the nut body 10 and the rotating portion 20 is as shown in fig. 13 to 17:
step 1: aligning the trapezoidal protrusions of the nut body 10 with the square grooves of the rotating portion 20 (shown with reference to fig. 13);
step 2: inserting the trapezoidal protrusion into the square groove until the width of the waist of the trapezoidal section of the trapezoidal protrusion is the same as the width of the square groove, at which time the assembly encounters resistance (see fig. 14 and 15);
and 3, step 3: the nut body 10 is forcibly pressed against the rotating portion 20 to fit the wedge teeth 12 and the non-abutting surfaces of the wedge grooves 13 to the position (refer to fig. 16 and 17). At this time, the nut body 10 and the rotating portion 20 are combined together by the overlapped pressing region M, so that the rotating portion 20 is prevented from falling off when being vertically installed, and the installation is convenient. The overlap height H4 of the overlap extrusion region M is generally between 1.5mm and 2.5 mm.
Another embodiment of the present invention provides a coupling pipe assembly, as shown in fig. 22 and 23, comprising a coupling pipe 31, a detachable nut 32 provided at one end of the coupling pipe 31, and a nipple nut as described in any one of the above, provided at the other end of the coupling pipe 31. The detachable nut 32 is used for connecting a heat exchanger pipe joint of an air conditioner outdoor unit; the pipe connecting nut is used for connecting a heat exchanger pipe joint of an indoor unit of an air conditioner. According to the connecting pipe nut provided by the embodiment of the invention, the nut body is connected with the rotating part through the clamping connection of the first clamping structure on the abutting surface of the wedge-shaped teeth and the second clamping structure on the abutting surface of the wedge-shaped groove, and then the screwing torque is applied to the rotating part and can be transmitted to the nut body through the abutting surfaces of the wedge-shaped teeth and the wedge-shaped groove, so that the nut body is stably connected with the pipe joint; when the loosening torque is applied to the rotating part, the wedge-shaped teeth can slide out of the wedge-shaped groove, so that the nut body is separated from the rotating part, the loosening torque cannot be transmitted to the nut body, the connection between the nut body and the pipe joint is prevented from being loosened, and the disassembly prevention function is realized. The adapter tube nut in the embodiment of the invention has a simpler structure and consumes less materials, so that the processing technology is simplified, and the production cost is reduced.
Another embodiment of the present invention provides an air conditioner including any one of the above-described connecting tube assemblies.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. The connecting pipe nut is characterized by comprising a nut body and a rotating part;
the nut body is cylindrical, the rotating part is prismatic, the nut body and the rotating part are both provided with hollow parts penetrating through opposite end surfaces of the nut body and the rotating part, and the hollow parts are cylinders; the inner side wall of the nut body is provided with internal threads;
the opposite end surfaces of the nut body and the rotating part are respectively provided with a wedge-shaped tooth and a wedge-shaped groove which are connected in a matched manner; when a tightening torque is applied to the rotating portion, the rotating portion can transmit the torque to the nut body through the abutting surfaces of the wedge-shaped teeth and the wedge-shaped grooves; when a loosening torque is applied to the rotating portion, the wedge teeth can slide out of the wedge grooves, so that the nut body and the rotating portion are separated;
the pushing surface of the wedge-shaped tooth is provided with a first clamping structure, the pushing surface of the wedge-shaped groove is provided with a second clamping structure, and the first clamping structure can be clamped in the second clamping structure when the nut body and the rotating part are assembled in the direction along the central axis of the nut body; when a unscrewing moment is applied to the rotating part, the first clamping structure can be separated from the second clamping structure;
the first clamping structure is a bulge, and the second clamping structure is a groove;
the cross section of the protrusion along the pushing surface parallel to the wedge-shaped teeth is trapezoidal, and the groove is a square groove;
the width W1 of the groove is larger than the width W2 of the bottom of the protrusion and smaller than the width W3 of the top of the protrusion, wherein the width W3-W1 is larger than or equal to 0.1mm and smaller than or equal to 1mm, and the width W1-W2 is larger than or equal to 0.5mm and smaller than or equal to 1 mm.
2. The spud nut of claim 1, characterized in that the pushing surface of the wedge-shaped teeth is parallel to the central axis of the nut body.
3. The adapter nut according to claim 1 or 2, comprising a plurality of wedge-shaped teeth, wherein the wedge-shaped teeth are all arranged on the end surface of the nut body, and the wedge-shaped grooves are correspondingly arranged on the end surface of the rotating part.
4. A spud nut according to claim 3, characterized in that a plurality of the wedge-shaped teeth are evenly distributed in the circumferential direction of the end face of the nut body.
5. A spud nut according to claim 1, characterized in that the height of the groove is greater than or equal to the height of the projection in a direction parallel to the central axis of the nut body.
6. The spud nut of claim 1, characterized in that the depth of the groove is greater than or equal to the thickness of the projection.
7. A nipple assembly comprising a nipple, a removable nut disposed at one end of the nipple, and a nipple nut according to any one of claims 1 to 6 disposed at the other end of the nipple.
8. An air conditioner characterized by comprising the connecting tube assembly of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711232003.8A CN108006047B (en) | 2017-11-29 | 2017-11-29 | Connecting pipe nut, connecting pipe assembly and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711232003.8A CN108006047B (en) | 2017-11-29 | 2017-11-29 | Connecting pipe nut, connecting pipe assembly and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108006047A CN108006047A (en) | 2018-05-08 |
| CN108006047B true CN108006047B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711232003.8A Active CN108006047B (en) | 2017-11-29 | 2017-11-29 | Connecting pipe nut, connecting pipe assembly and air conditioner |
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| CN (1) | CN108006047B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216158524U (en) * | 2021-06-11 | 2022-04-01 | 浙江盾安禾田金属有限公司 | Anti-dismantling connecting piece |
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| CN103185181A (en) * | 2011-12-27 | 2013-07-03 | 珠海格力电器股份有限公司 | Air conditioner, anti-detaching pipe joint and assembly |
| CN203348763U (en) * | 2013-06-21 | 2013-12-18 | 广东美的制冷设备有限公司 | Air conditioner and disassembly-resistant pipe connecting device |
| CN103470879A (en) * | 2012-06-08 | 2013-12-25 | 珠海格力电器股份有限公司 | Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut |
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| CN204805772U (en) * | 2015-07-03 | 2015-11-25 | 上海三菱电机·上菱空调机电器有限公司 | Air conditioner and anti -disassembly formula coupling |
| CN204828236U (en) * | 2015-07-10 | 2015-12-02 | 上海三菱电机·上菱空调机电器有限公司 | Anti -disassembly formula union nut, takeover nut component and air conditioner |
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| CN108006047A (en) | 2018-05-08 |
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