CN103470879B - Pipe connection nut, pipe connection assembly, air conditioner and method for preventing pipe connection nut from being disassembled - Google Patents
Pipe connection nut, pipe connection assembly, air conditioner and method for preventing pipe connection nut from being disassembled Download PDFInfo
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- CN103470879B CN103470879B CN201210189081.5A CN201210189081A CN103470879B CN 103470879 B CN103470879 B CN 103470879B CN 201210189081 A CN201210189081 A CN 201210189081A CN 103470879 B CN103470879 B CN 103470879B
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- rotary part
- nut
- nut body
- union nut
- follower
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 241000168254 Siro Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a pipe nut which comprises a nut body and a rotating part for rotating a tool, wherein a first internal thread is arranged at the first end of the nut body; when a screwing torque is applied to the rotating part, the driving part and the driven part are combined to transmit the torque to the nut body, and when an unscrewing torque is applied to the rotating part, the driving part and the driven part are separated; alternatively, the driving portion is coupled to the driven portion, and when the tightening torque applied to the rotating portion exceeds a certain level, the driving portion or the driven portion is broken. The connecting pipe nut provided by the invention ensures that the connecting pipe nut and the pipe joint are not loosened, avoids the problem of refrigerant leakage caused by the detachable connection of the existing pipe joint and the connecting pipe nut, and enlarges the application range of combustible refrigerants. Meanwhile, the invention also discloses a pipe joint assembly and an air conditioner using the pipe joint nut, and a method for preventing the pipe joint nut from being disassembled.
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 all uses pipe joint to be connected vaporizer and connecting tube with the mode of union nut.And require in EN60335-2-40 standard not allow to use dismountable linkage structure inside the air conditioner chamber of use combustible refrigerant, in order to head it off, the direct employing indoor side vaporizer had and connecting tube welding, outdoor adopt the scheme of rapid pipe joint, though the requirement of standard and Security can be met, also there is Railway Project:
1, the cost of nearly 400 yuan of rapid connector component, makes product advantage on cost not obvious.
2, install after sale the restriction being subject to connecting tube, product using scope reduces further.
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, expand the using scope of combustible refrigerant, and structure is simple, easy to process, reduce I&M cost after sale.
Second technical problem to be solved by this invention is, provides a kind of tube joint assembly using above-mentioned union nut.
3rd technical problem to be solved by this invention is, provides a kind of air conditioner using above-mentioned tube joint assembly.
4th technical problem to be solved by this invention is, provides a kind of method of union nut Anti-dismantling, to avoid existing pipe joint and the secondary refrigerant leakage problem of union nut because detachably causing, expands the using scope of combustible refrigerant.
The present invention solves the technological scheme that above-mentioned first technical problem adopt: a kind of union nut, it rotary part comprising nut body and rotate for instrument, this nut body has first end and the second end, the first internal thread coordinated with pipe joint is provided with at nut body first end, described rotary part and described nut body are two independently parts, and on described rotary part and described nut body, be respectively arranged with the initiative part and follower that match; When applying screw-down torque at described rotary part, described initiative part is combined with described follower to described nut body carry-over moment, when unscrewing moment in described rotary part applying, described initiative part and described secondary part from; Or described initiative part is combined with described follower, when the screw-down torque applied at described rotary part exceedes a certain size, described initiative part or the fracture of described follower.
Wherein in an embodiment, described rotary part is tubular structure, and it is actively socketed on the outside of described nut body.
Wherein in an embodiment, the outer circumferential face of described rotary part is prismatic.
Wherein in an embodiment, described nut body is stepped shape, it comprises the enlarged diameter section and reduced diameter section that connect successively from first end to the second end, on the end face of the second end, described follower is provided with at described enlarged diameter section, described rotary part pivot bush unit, in the outside of described reduced diameter section, the corresponding end face of described rotary part is provided with described initiative part.
Wherein in an embodiment, the outer circumferential face of described enlarged diameter section is cylindrical.
Wherein in an embodiment, described follower is be located at the one or more chisel teeth of described enlarged diameter section on the end face of the second end or wedge slot, and described initiative part is the chisel teeth of the equal number be located on the corresponding end face of described rotary part.
Wherein in an embodiment, on the end face of the second end, be provided with annular groove at described enlarged diameter section, described chisel teeth or wedge slot are contained in this groove.
Wherein in an embodiment, described reduced diameter section is provided with outside thread, the inwall of described rotary part is provided with the second internal thread matched with this outside thread.
Wherein in an embodiment, the pitch of described second internal thread is greater than the pitch of described first internal thread.
Wherein in an embodiment, the lift angle of described second internal thread is greater than the lift angle of described first internal thread.
Wherein in an embodiment, described follower is be located at the one or more positioning hole of described enlarged diameter section on the end face of the second end or locating column, and described initiative part is locating column or the positioning hole of the equal number be located 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 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 4th technological scheme that technical problem adopts: a kind of method of union nut Anti-dismantling, the rotary part that described union nut comprises nut body and rotates for instrument, this nut body has first end and the second end, the first internal thread coordinated with pipe joint is provided with at nut body first end, comprise the steps: described nut body and described rotary part to be divided into two independently parts, and on described rotary part and described nut body, process the initiative part and follower that match respectively;
When applying screw-down torque at described rotary part, described initiative part is combined to described nut body carry-over moment with described follower, and nut body and pipe joint are combined closely; When applying to unscrew moment at described rotary part, described initiative part and described secondary part from; Or described initiative part is combined with described follower, when the screw-down torque applied at described rotary part exceedes a certain size, 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 applying screw-down torque at rotary part, 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 to unscrew moment at described rotary part, described initiative part and described secondary part from, ensure that closely cooperating of nut body and pipe joint, play the effect of Anti-dismantling; Or described initiative part is combined with described follower, when the screw-down torque applied at described rotary part exceedes a certain size, described initiative part or the fracture of described follower, play the effect of Anti-dismantling equally.
As can be seen here, union nut provided by the present invention, ensure that union nut and pipe joint do not get loose, and avoids existing pipe joint and union nut because of the secondary refrigerant leakage problem detachably caused, expands the using scope of combustible refrigerant; Meanwhile, union nut provided by the present invention also has easy installation, and structure is simple, advantage easy to process.
Accompanying drawing explanation
Fig. 1 is the structural representation before the union nut assembling in the embodiment of the present invention one;
Fig. 2 is the schematic perspective view in the nut body direction in Fig. 1;
Fig. 3 is the schematic perspective view in another direction of nut body in Fig. 1;
Fig. 4 is the schematic perspective view of the rotary part in Fig. 1;
Fig. 5 for union nut shown in Fig. 1 and pipe joint assemble after structural representation;
Fig. 6 is the structural representation before the union nut assembling in the embodiment of the present invention two;
Fig. 7 is the schematic perspective view of the nut body in Fig. 6;
Fig. 8 is the schematic perspective view of the rotary part in Fig. 6;
Fig. 9 for union nut shown in Fig. 6 and pipe joint assemble after structural representation.
Above in each figure, 100-union nut, 110-nut body, 111-enlarged diameter section, 112-reduced diameter section, 113-first internal thread, 114-outside thread, 115-groove, 116-wedge slot, 117-positioning hole, 118-first end, 119-second end, 120-rotary part, 121-chisel teeth, 122-second internal thread, 123-locating column, 200-pipe joint, 300-indoor set connecting tube, 400-outdoor unit connecting tube.
Embodiment
And the present invention is described in detail in conjunction with the embodiments below with reference to the accompanying drawings.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.
Embodiment one
As shown in Figure 1, the union nut 100 in the present embodiment comprises mutually independently nut body 110 and the rotary part 120 for instrument rotation, and rotary part 120 and nut body 110 are respectively arranged with the initiative part and follower that match.
Shown in composition graphs 2,3, described nut body 110 is stepped shape, and it comprises the enlarged diameter section 111 and reduced diameter section 112 that connect successively from first end 118 to the second end 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, on the end face of the second end 119, be provided with described follower at described enlarged diameter section 111.Preferably, the follower of the present embodiment is be arranged on the one or more wedge slots 116 (also can be chisel teeth) of described enlarged diameter section 111 on the end face of the second end 119, further preferably, on the end face of the second end 119, be provided with annular groove 115 at described enlarged diameter section 111, described wedge slot 116 is contained in this groove 115.Such wedge slot 116 is hidden in groove 115, can avoid by external force action on wedge slot 116, nut body 110 being separated when the closely cooperating of nut body 110 and pipe joint 200 with pipe joint 200.
Preferably, reduced diameter section 112 is provided with outside thread 114, outside thread 114, for being connected with rotary part 120, makes rotary part 120 be retained on nut body 110, avoids rotary part 120 to depart from when nut body 110 vibrates and produces abnormal sound.Further preferably, the pitch of described outside thread 114 is greater than the pitch of described first internal thread 113, the lift angle of described outside thread 114 is greater than the lift angle of described first internal thread 113, make described rotary part 120 exit that stroke is greater than described nut body 110 exit stroke, like this, when applying to unscrew moment at rotary part 120, rotary part 120 pairs of nut bodies 110 apply moment of torsion and are engaged moment of torsion much smaller than pipe joint 200 and nut body 110, ensure that closely cooperating of nut body 110 and pipe joint 200, play the effect of Anti-dismantling.
Shown in composition graphs 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, is rotated by instrument to facilitate.The inwall of rotary part 120 is provided with the second internal thread 122 matched with the 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 being preferably outside thread 114 is more than or equal to the tooth depth of chisel teeth 121 and the product of chisel teeth 121 number, make it when described rotary part 120 applies to unscrew moment, wedge slot 116 on nut body 110 can not be mutually stuck with the chisel teeth 121 on rotary part 120, ensures that initiative part is separated smoothly with described follower.
As shown in Figure 5, when applying screw-down torque at rotary part 120, initiative part can be combined with follower, rotary part 120 drives nut body 110 synchronous rotary by the interaction of initiative part and follower, and by the first end 118 precession pipe joint 200 of nut body 110, when applying to unscrew moment at rotary part 120, initiative part and secondary part from, ensure that nut body 110 and pipe joint 200 closely cooperate, play the effect of Anti-dismantling.Even if rotary part 120 gets loose or exits, nut body 110 and pipe joint 200 still compact siro spinning technology, during independent counterrotating nut body 110, when masterpiece is used in nut body 110, outer circumferential face because of nut body 110 is cylindrical, it cannot be made stressed, therefore ensure that 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, ensure that nut body 110 and pipe joint 200 do not get loose, avoid existing pipe joint 200 and union nut 100 because of the secondary refrigerant leakage problem detachably caused, expand the using scope of combustible refrigerant; Meanwhile, the union nut 100 that the present embodiment provides also has easy installation, and structure is simple, advantage 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 the union nut 100 of embodiment one, difference is: described follower is be located at the one or more positioning holes 117 of described enlarged diameter section 111 on the end face of the second end 119, described initiative part is the locating column 123 of the equal number be located on the corresponding end face of described rotary part 120, and the reduced diameter section 112 of nut body 110 is polished rod structure.As shown in Figure 9, locating column 123 inserts in positioning hole 117, screw-down torque is applied to rotary part 120, rotary part 120 drives nut body 110 synchronous rotary, by the first end 118 precession pipe joint 200 of nut body 110, after nut body 110 and pipe joint 200 compact siro spinning technology, apply tightening torque further, locating column 123 on rotary part 120 is ruptured, thus realizes Anti-dismantling.
In another embodiment of the present invention, a kind of pipe joint 200 assembly is provided, comprises the union nut 100 described in 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 assembly of indoor set connecting tube 300, outdoor unit connecting tube 400 and above-described embodiment, described pipe joint 200 welds with described indoor set connecting tube 300, described union nut 100 is sleeved on described outdoor unit connecting tube 400, union nut 100 and pipe joint 200 are tightened, realizes being tightly connected of indoor and outdoor machine connecting tube.
The above embodiment only have expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but therefore can not 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 rotary part comprising nut body and rotate for instrument, this nut body has first end and the second end, the first internal thread coordinated with pipe joint is provided with at nut body first end, it is characterized in that, described rotary part and described nut body are two independently parts, and on described rotary part and described nut body, be respectively arranged with the initiative part and follower that match;
When applying screw-down torque at described rotary part, described initiative part is combined with described follower to described nut body carry-over moment, when unscrewing moment in described rotary part applying, described initiative part and described secondary part from; Or described initiative part is combined with described follower, when the screw-down torque applied at described rotary part exceedes a certain size, described initiative part or the fracture of described follower.
2. union nut according to claim 1, 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, 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 the enlarged diameter section and reduced diameter section that connect successively from first end to the second end, on the end face of the second end, described follower is provided with at described enlarged diameter section, described rotary part pivot bush unit, in the outside of described reduced diameter section, the corresponding end face of described rotary part is provided with described initiative part.
5. union nut according to claim 4, 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 be located at the one or more chisel teeth of described enlarged diameter section on the end face of the second end or wedge slot, and described initiative part is the chisel teeth of the equal number be located on the corresponding end face of described rotary part.
7. union nut according to claim 6, is characterized in that: on the end face of the second end, be provided with annular groove at described enlarged diameter section, described chisel teeth or wedge slot are contained in this groove.
8. the union nut according to claim 6 or 7, is characterized in that: on described reduced diameter section, be provided with outside thread, and 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, is characterized in that: the pitch of described second internal thread is greater than the pitch of described first internal thread.
10. union nut according to claim 8, is characterized in that: the lift angle of described second internal thread is greater than the lift angle of described first internal thread.
11. union nuts according to claim 4, it is characterized in that: described follower is be located at the one or more positioning hole of described enlarged diameter section on the end face of the second end or locating column, described initiative part is locating column or the positioning hole of the equal number be located on the corresponding end face of described rotary part.
12. 1 kinds of tube joint assemblies, comprise pipe joint and union nut, it is characterized in that: described union nut is the union nut such as according to any one of claim 1 to 11.
13. 1 kinds of air conditioners, 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.
The method of 14. 1 kinds of union nut Anti-dismantlings, the rotary part that described union nut comprises nut body and rotates for instrument, this nut body has first end and the second end, the first internal thread coordinated with pipe joint is provided with at nut body first end, it is characterized in that, comprise the steps: described nut body and described rotary part to be divided into two independently parts, and on described rotary part and described nut body, process the initiative part and follower that match respectively;
When applying screw-down torque at described rotary part, described initiative part is combined to described nut body carry-over moment with described follower, and nut body and pipe joint are combined closely; When applying to unscrew moment at described rotary part, described initiative part and described secondary part from; Or described initiative part is combined with described follower, when the screw-down torque applied at described rotary part exceedes a certain size, 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 | Pipe connection nut, pipe connection assembly, air conditioner and method for preventing pipe connection nut from being disassembled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189081.5A CN103470879B (en) | 2012-06-08 | 2012-06-08 | Pipe connection nut, pipe connection assembly, air conditioner and method for preventing pipe connection nut from being disassembled |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470879A CN103470879A (en) | 2013-12-25 |
| CN103470879B true CN103470879B (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210189081.5A Active CN103470879B (en) | 2012-06-08 | 2012-06-08 | Pipe connection nut, pipe connection assembly, air conditioner and method for preventing pipe connection nut from being disassembled |
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| CN (1) | CN103470879B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780342A (en) * | 2017-11-14 | 2019-05-21 | 浙江盾安禾田金属有限公司 | A kind of novel Anti-dismantling casing |
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| CN104133419B (en) * | 2014-07-14 | 2017-09-08 | 珠海格力电器股份有限公司 | Method for preventing error in assembling pipe connecting nut of evaporator of air conditioner internal unit |
| CN104990057B (en) * | 2015-07-25 | 2017-06-06 | 王新阳 | A kind of steam added combustion heating boiler |
| CN113007807B (en) * | 2017-01-25 | 2022-07-15 | 珠海格力电器股份有限公司 | Wall-mounted air conditioner indoor unit and air conditioner |
| 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 |
| CN114738570B (en) * | 2022-06-13 | 2022-09-02 | 迈创(常州)智能科技有限公司 | Hot melt rubber pipe convenient to connect |
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| JP4287696B2 (en) * | 2003-05-20 | 2009-07-01 | ヤンマー株式会社 | Hydraulic piping tube processing method |
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| CN103470879A (en) | 2013-12-25 |
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