CN103470879A - Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut - Google Patents
Pipe connection nut, pipe joint assembly, air conditioner and disassembly prevention method for pipe connection nut Download PDFInfo
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- CN103470879A CN103470879A CN2012101890815A CN201210189081A CN103470879A CN 103470879 A CN103470879 A CN 103470879A CN 2012101890815 A CN2012101890815 A CN 2012101890815A CN 201210189081 A CN201210189081 A CN 201210189081A CN 103470879 A CN103470879 A CN 103470879A
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Abstract
The invention discloses a pipe connection nut which comprises a nut body and a rotating part for enabling a tool to rotate. A first end of the nut body is provided with a first internal screw thread; the rotating part and the nut body are two independent parts; the rotating part and the nut body are respectively provided with a driving part and a driven part which are matched; when a tightening torque is applied to the rotating part, the driving part and the driven part are combined to transfer the torque to the nut body; when an unscrewing torque is applied to the rotating part, the driving part is separated from the driven part; or, the driving part is combined with the driven part and when the tightening torque applied to the rotating part exceeds a certain value, the driving part or the driven part is broken. According to the pipe connection nut provided by the invention, the pipe connection nut and a pipe joint are guaranteed not to be loosened; the problem of leakage of a refrigerant, which is caused by the case that an existing pipe joint and the pipe connection nut are detachable, is avoided; and the application range of the flammable refrigerant is enlarged. Meanwhile, the invention also discloses a pipe joint assembly and an air conditioner which use the pipe connection nut, and a disassembly prevention method for the pipe connection nut.
Description
Technical field
The present invention relates to pipe joint, particularly relate to a kind of union nut, use tube joint assembly and the air conditioner of this union nut, and the method for union nut Anti-dismantling.
Background technique
At present, the detachable air conditioner indoor side of common working medium is all used the mode of pipe joint and union nut to be connected vaporizer and connecting tube.And in the EN60335-2-40 standard, require to use the air conditioner chamber inboard of combustible refrigerant not allow to use dismountable linkage structure, for head it off, the direct employing indoor side vaporizer had and connecting tube welding, outdoor adopt the scheme of rapid pipe joint, though can meet the requirement of standard and Security, also have several problems:
1, the cost of nearly 400 yuan of rapid connector component, make product advantage on cost not obvious.
2, the restriction that is subject to connecting tube is installed after sale, the product using scope further reduces.
Summary of the invention
For above-mentioned prior art present situation, first technical problem to be solved by this invention is, a kind of union nut of Anti-dismantling is provided, to avoid existing pipe joint and the secondary refrigerant leakage problem of union nut because detachably causing, enlarge the using scope of combustible refrigerant, and simple in structure, easy to process, reduce I&M cost after sale.
Second technical problem to be solved by this invention is, a kind of tube joint assembly that uses above-mentioned union nut is provided.
The 3rd technical problem to be solved by this invention is, a kind of air conditioner that uses above-mentioned tube joint assembly is provided.
The 4th technical problem to be solved by this invention is, a kind of method of union nut Anti-dismantling is provided, and to avoid existing pipe joint and the secondary refrigerant leakage problem of union nut because detachably causing, enlarges the using scope of combustible refrigerant.
The present invention solves the technological scheme that above-mentioned first technical problem adopts: a kind of union nut, it comprises nut body and the rotary part rotated for instrument, this nut body has first end and the second end, be provided with the first internal thread coordinated with pipe joint at the nut body first end, described rotary part and described nut body are two independently parts, and are respectively arranged with initiative part and the follower matched on described rotary part and described nut body; When described rotary part applies screw-down torque, described initiative part is combined with described follower to described nut body carry-over moment, when applying at described rotary part while unscrewing moment, described initiative part and described secondary part from; Perhaps, described initiative part is combined with described follower, when the screw-down torque applied at described rotary part surpasses a certain size, and described initiative part or the fracture of described follower.
In embodiment, described rotary part is tubular structure therein, and it is actively socketed on the outside of described nut body.
In embodiment, the outer circumferential face of described rotary part is prismatic therein.
Therein in embodiment, described nut body is stepped shape, it comprises enlarged diameter section and the reduced diameter section connected successively from first end to the second end, be provided with described follower at described enlarged diameter section near on the end face of the second end, described rotary part pivot bush unit, in the outside of described reduced diameter section, is provided with described initiative part on the corresponding end face of described rotary part.
In embodiment, the outer circumferential face of described enlarged diameter section is cylindrical therein.
In embodiment, described follower is to be located at described enlarged diameter section near one or more chisel teeths or wedge slot on the end face of the second end therein, and described initiative part is the chisel teeth of being located at the equal number on the corresponding end face of described rotary part.
In embodiment, at described enlarged diameter section, near on the end face of the second end, be provided with annular groove therein, described chisel teeth or wedge slot are contained in this groove.
In embodiment, on described reduced diameter section, be provided with outside thread therein, the inwall of described rotary part is provided with the second internal thread matched with this outside thread.
In embodiment, the pitch of described the second internal thread is greater than the pitch of described the first internal thread therein.
In embodiment, the lift angle of described the second internal thread is greater than the lift angle of described the first internal thread therein.
In embodiment, described follower is to be located at described enlarged diameter section near one or more positioning holes or locating column on the end face of the second end therein, and described initiative part is locating column or the positioning hole of being located at the equal number on the corresponding end face of described rotary part.
The present invention solves the technological scheme that above-mentioned second technical problem adopt: a kind of tube joint assembly comprises pipe joint and union nut, the union nut that described union nut is above-mentioned.
The present invention solves above-mentioned the 3rd technological scheme that technical problem adopts: a kind of air conditioner, it comprises indoor set connecting tube, outdoor unit connecting tube and tube joint assembly, described tube joint assembly adopts above-mentioned tube joint assembly, described pipe joint is fixedly connected with described indoor set connecting tube, and described union nut is sleeved on described outdoor unit connecting tube.
The present invention solves above-mentioned the 4th technological scheme that technical problem adopts: a kind of method of union nut Anti-dismantling, described union nut comprises nut body and the rotary part rotated for instrument, this nut body has first end and the second end, be provided with the first internal thread coordinated with pipe joint at the nut body first end, comprise the steps: described nut body and described rotary part are divided into to two independently parts, and process respectively initiative part and the follower matched on described rotary part and described nut body;
When described rotary part applies screw-down torque, described initiative part is combined to described nut body carry-over moment with described follower, makes nut body and pipe joint combine closely; When applying at described rotary part while unscrewing moment, described initiative part and described secondary part from; Perhaps, described initiative part is combined with described follower, when the screw-down torque applied at described rotary part surpasses a certain size, and described initiative part or the fracture of described follower.
Union nut provided by the present invention, tube joint assembly and air conditioner, the rotary part of union nut and nut body are two independently parts, when when rotary part applies screw-down torque, described initiative part is combined with described follower to described nut body carry-over moment, can guarantee that nut body and pipe joint are threaded connection, when applying at described rotary part while unscrewing moment, described initiative part and described secondary part from, guarantee closely cooperating of nut body and pipe joint, played the effect of Anti-dismantling; Perhaps, described initiative part is combined with described follower, and when the screw-down torque applied at described rotary part surpasses a certain size, described initiative part or described follower rupture, and play equally the effect of Anti-dismantling.
As can be seen here, union nut provided by the present invention, guaranteed that union nut and pipe joint do not get loose, and avoided existing pipe joint and the union nut secondary refrigerant leakage problem because detachably causing, and enlarged the using scope of combustible refrigerant; Simultaneously, union nut provided by the present invention also has easy installation, simple in structure, advantage easy to process.
The accompanying drawing explanation
Fig. 1 is the structural representation before the union nut assembling in the embodiment of the present invention one;
The schematic perspective view that Fig. 2 is the direction of nut body in Fig. 1;
The schematic perspective view that Fig. 3 is another direction of nut body in Fig. 1;
The schematic perspective view that Fig. 4 is the rotary part in Fig. 1;
Fig. 5 is the structural representation after union nut shown in Fig. 1 and pipe joint assembling;
Fig. 6 is the structural representation before the union nut assembling in the embodiment of the present invention two;
The schematic perspective view that Fig. 7 is the nut body in Fig. 6;
The schematic perspective view that Fig. 8 is the rotary part in Fig. 6;
Fig. 9 is the structural representation after union nut shown in Fig. 6 and pipe joint assembling.
In above each figure, 100-union nut, 110-nut body, 111-enlarged diameter section, the 112-reduced diameter section, 113-the first internal thread, 114-outside thread, the 115-groove, 116-wedge slot, 117-positioning hole, the 118-first end, 119-the second end, 120-rotary part, the 121-chisel teeth, 122-the second internal thread, 123-locating column, the 200-pipe joint, 300-indoor set connecting tube, 400-outdoor unit connecting tube.
Embodiment
Below with reference to accompanying drawing, also the present invention is described in detail in conjunction with the embodiments.It should be noted that, in the situation that do not conflict, below feature in each embodiment and embodiment can mutually combine.
Embodiment one
As shown in Figure 1, the union nut 100 in the present embodiment comprises mutual independently nut body 110 and the rotary part 120 rotated for instrument, is respectively arranged with initiative part and the follower matched on rotary part 120 and nut body 110.
Shown in Fig. 2,3, described nut body 110 is stepped shape, and it comprises enlarged diameter section 111 and the reduced diameter section 112 connected successively from first end 118 to second ends 119, preferably, the outer circumferential face of described enlarged diameter section 111 is cylindrical, can avoid like this with instrument rotating nut body 110.Be provided with the first internal thread 113 coordinated with pipe joint 200 at enlarged diameter section 111, at described enlarged diameter section 111, near on the end face of the second end 119, be provided with described follower.Preferably, the follower of the present embodiment is to be arranged on described enlarged diameter section 111 near the one or more wedge slots 116 (can be also chisel teeth) on the end face of the second end 119, further preferably, be provided with annular groove 115 at described enlarged diameter section 111 near on the end face of the second end 119, described wedge slot 116 is contained in this groove 115.Wedge slot 116 is hidden in groove 115 like this, can avoid by external force action on wedge slot 116, making nut body 110 separate with pipe joint 200 when the closely cooperating of nut body 110 and pipe joint 200.
Preferably, be provided with outside thread 114 on reduced diameter section 112, outside thread 114, for being connected with rotary part 120, is retained on nut body 110 rotary part 120, produces abnormal sound while avoiding rotary part 120 to break away from nut body 110 vibration.Further preferably, the pitch of described outside thread 114 is greater than the pitch of described the first internal thread 113, the lift angle of described outside thread 114 is greater than the lift angle of described the first internal thread 113, make the stroke that exits that stroke is greater than described nut body 110 that exits of described rotary part 120, like this, when applying at rotary part 120 while unscrewing moment, 120 pairs of nut bodies 110 of rotary part apply the interlock moment of torsion of moment of torsion much smaller than pipe joint 200 and nut body 110, guarantee closely cooperating of nut body 110 and pipe joint 200, played the effect of Anti-dismantling.
Shown in Fig. 4, the rotary part 120 of the present embodiment is tubular structure, and its kink is in the outside of reduced diameter section 112, and the outer circumferential face of rotary part 120 is preferably hexagon, to facilitate by instrument, rotates.The inwall of rotary part 120 is provided with the second internal thread 122 matched with outside thread 114 on reduced diameter section 112.The corresponding end face of rotary part 120 is provided with the initiative part of equal number, and the initiative part of the present embodiment is chisel teeth 121, and the sphenoid surface angle of chisel teeth 121 is much smaller than Self-locking angle.The pitch phase coadaptation of the height of chisel teeth 121 and wedge slot 116 and the outside thread 114 of nut body 110, the pitch that is preferably outside thread 114 is more than or equal to the product of tooth depth and chisel teeth 121 numbers of chisel teeth 121, it is applied while unscrewing moment at described rotary part 120, wedge slot 116 on nut body 110 can be mutually not stuck with the chisel teeth 121 on rotary part 120, guarantees that initiative part separates smoothly with described follower.
As shown in Figure 5, when when rotary part 120 applies screw-down torque, initiative part can be combined with follower, rotary part 120 drives nut body 110 synchronous rotaries by the interaction of initiative part and follower, and by the first end of nut body 110 118 precession pipe joints 200, when applying at rotary part 120 while unscrewing moment, initiative part and secondary part from, guaranteed that nut body 110 and pipe joint 200 closely cooperate, and play the effect of Anti-dismantling.Even rotary part 120 gets loose or exits, nut body 110 still closely is connected with pipe joint 200, during independent counterrotating nut body 110, when masterpiece is used in nut body 110, because the outer circumferential face of nut body 110 is cylindrical, can't make it stressed, therefore guaranteed not getting loose of pipe joint 200 and nut body 110, prevent secondary refrigerant leakage.
As can be seen here, the union nut 100 that the present embodiment provides, guaranteed that nut body 110 and pipe joint 200 do not get loose, avoided existing pipe joint 200 and the union nut 100 secondary refrigerant leakage problem because detachably causing, enlarged the using scope of combustible refrigerant; Simultaneously, the union nut 100 that the present embodiment provides also has easy installation, advantage simple in structure, easy to process.
Embodiment two
As shown in Fig. 6 to 8, the union nut 100 of the present embodiment is substantially identical with the structure of embodiment one union nut 100, difference is: described follower is to be located at described enlarged diameter section 111 near the one or more positioning holes 117 on the end face of the second end 119, described initiative part is the locating column 123 of being located at the equal number on the corresponding end face of described rotary part 120, and the reduced diameter section 112 of nut body 110 is the polished rod structure.As shown in Figure 9, locating column 123 inserts in positioning hole 117, rotary part 120 is applied to screw-down torque, rotary part 120 drives nut body 110 synchronous rotaries, by the first end of nut body 110 118 precession pipe joints 200, nut body 110 further applies tightening torque after being connected with pipe joint 200 is tight, make locating column 123 fractures on rotary part 120, thereby realize Anti-dismantling.
In another embodiment of the present invention, provide a kind of pipe joint 200 assemblies, comprise the described union nut 100 of pipe joint 200 and above-described embodiment.
In another embodiment of the present invention, a kind of air conditioner is provided, it comprises pipe joint 200 assemblies of indoor set connecting tube 300, outdoor unit connecting tube 400 and above-described embodiment, described pipe joint 200 and described indoor set connecting tube 300 welding, described union nut 100 is sleeved on described outdoor unit connecting tube 400, union nut 100 and pipe joint 200 are tightened, realized being tightly connected of indoor and outdoor machine connecting tube.
The above embodiment has only expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (14)
1. a union nut, it comprises nut body and the rotary part rotated for instrument, this nut body has first end and the second end, be provided with the first internal thread coordinated with pipe joint at the nut body first end, it is characterized in that, described rotary part and described nut body are two independently parts, and are respectively arranged with initiative part and the follower matched on described rotary part and described nut body;
When described rotary part applies screw-down torque, described initiative part is combined with described follower to described nut body carry-over moment, when applying at described rotary part while unscrewing moment, described initiative part and described secondary part from; Perhaps, described initiative part is combined with described follower, when the screw-down torque applied at described rotary part surpasses a certain size, and described initiative part or the fracture of described follower.
2. union nut according to claim 1, it is characterized in that: described rotary part is tubular structure, and it is actively socketed on the outside of described nut body.
3. union nut according to claim 2, it is characterized in that: the outer circumferential face of described rotary part is prismatic.
4. union nut according to claim 2, it is characterized in that: described nut body is stepped shape, it comprises enlarged diameter section and the reduced diameter section connected successively from first end to the second end, be provided with described follower at described enlarged diameter section near on the end face of the second end, described rotary part pivot bush unit, in the outside of described reduced diameter section, is provided with described initiative part on the corresponding end face of described rotary part.
5. union nut according to claim 4, it is characterized in that: the outer circumferential face of described enlarged diameter section is cylindrical.
6. union nut according to claim 4, it is characterized in that: described follower is to be located at described enlarged diameter section near one or more chisel teeths or wedge slot on the end face of the second end, and described initiative part is the chisel teeth of being located at the equal number on the corresponding end face of described rotary part.
7. union nut according to claim 6 is characterized in that: be provided with annular groove at described enlarged diameter section near on the end face of the second end, described chisel teeth or wedge slot are contained in this groove.
8. according to the described union nut of claim 6 or 7, it is characterized in that: be provided with outside thread on described reduced diameter section, the inwall of described rotary part is provided with the second internal thread matched with this outside thread.
9. union nut according to claim 8, it is characterized in that: the pitch of described the second internal thread is greater than the pitch of described the first internal thread.
10. union nut according to claim 8, it is characterized in that: the lift angle of described the second internal thread is greater than the lift angle of described the first internal thread.
11. union nut according to claim 4, it is characterized in that: described follower is to be located at described enlarged diameter section near one or more positioning holes or locating column on the end face of the second end, and described initiative part is locating column or the positioning hole of being located at the equal number on the corresponding end face of described rotary part.
12. a tube joint assembly, comprise pipe joint and union nut, it is characterized in that: described union nut is union nut as described as any one in claim 1 to 11.
A 13. air conditioner, it comprises indoor set connecting tube, outdoor unit connecting tube and tube joint assembly, it is characterized in that: described tube joint assembly adopts tube joint assembly as claimed in claim 12, described pipe joint is fixedly connected with described indoor set connecting tube, and described union nut is sleeved on described outdoor unit connecting tube.
14. the method for a union nut Anti-dismantling, described union nut comprises nut body and the rotary part rotated for instrument, this nut body has first end and the second end, be provided with the first internal thread coordinated with pipe joint at the nut body first end, it is characterized in that, comprise the steps: described nut body and described rotary part are divided into to two independently parts, and process respectively initiative part and the follower matched on described rotary part and described nut body;
When described rotary part applies screw-down torque, described initiative part is combined to described nut body carry-over moment with described follower, makes nut body and pipe joint combine closely; When applying at described rotary part while unscrewing moment, described initiative part and described secondary part from; Perhaps, described initiative part is combined with described follower, when the screw-down torque applied at described rotary part surpasses a certain size, and described initiative part or the fracture of described follower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189081.5A CN103470879B (en) | 2012-06-08 | 2012-06-08 | The method of union nut, tube joint assembly, air conditioner and union nut Anti-dismantling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189081.5A CN103470879B (en) | 2012-06-08 | 2012-06-08 | The method of union nut, tube joint assembly, air conditioner and union nut Anti-dismantling |
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| CN103470879A true CN103470879A (en) | 2013-12-25 |
| CN103470879B CN103470879B (en) | 2015-08-12 |
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| CN201210189081.5A Active CN103470879B (en) | 2012-06-08 | 2012-06-08 | The method of union nut, tube joint assembly, air conditioner and union nut Anti-dismantling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104133419A (en) * | 2014-07-14 | 2014-11-05 | 珠海格力电器股份有限公司 | Air conditioner indoor unit evaporator joint pipe nut assembly error proofing device and air conditioner indoor unit evaporator joint pipe nut assembly error proofing method |
| CN104990057A (en) * | 2015-07-25 | 2015-10-21 | 王新阳 | Steam-assisted combustion heating furnace |
| CN108006047A (en) * | 2017-11-29 | 2018-05-08 | 海信（山东）空调有限公司 | A kind of union nut, connecting pipe component and air-conditioning |
| CN113028514A (en) * | 2017-01-25 | 2021-06-25 | 珠海格力电器股份有限公司 | Wall-mounted air conditioner indoor unit and air conditioner |
| CN114738570A (en) * | 2022-06-13 | 2022-07-12 | 迈创(常州)智能科技有限公司 | Hot melt rubber pipe convenient to connect |
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| CN116006793A (en) * | 2017-11-14 | 2023-04-25 | 浙江盾安禾田金属有限公司 | Novel anti-disassembly sleeve and tightening and installing method of anti-disassembly sleeve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104133419A (en) * | 2014-07-14 | 2014-11-05 | 珠海格力电器股份有限公司 | Air conditioner indoor unit evaporator joint pipe nut assembly error proofing device and air conditioner indoor unit evaporator joint pipe nut assembly error proofing method |
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| CN113028514A (en) * | 2017-01-25 | 2021-06-25 | 珠海格力电器股份有限公司 | Wall-mounted air conditioner indoor unit and air conditioner |
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| CN108006047B (en) * | 2017-11-29 | 2020-08-11 | 海信（山东）空调有限公司 | Connecting pipe nut, connecting pipe assembly and air conditioner |
| CN114738570A (en) * | 2022-06-13 | 2022-07-12 | 迈创(常州)智能科技有限公司 | Hot melt rubber pipe convenient to connect |
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