CN204677925U - Connecting head - Google Patents
Connecting head Download PDFInfo
- Publication number
- CN204677925U CN204677925U CN201520398936.4U CN201520398936U CN204677925U CN 204677925 U CN204677925 U CN 204677925U CN 201520398936 U CN201520398936 U CN 201520398936U CN 204677925 U CN204677925 U CN 204677925U
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- internal thread
- thread
- quick
- outside thread
- pitch
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Abstract
The utility model discloses a kind of connecting head, quick female joint (2) is provided with the first internal thread (101), quick tool joint pin (3) is provided with the first outside thread (102), first internal thread (101) is threaded with the first outside thread (102), and the pitch of the first internal thread (101) is identical with the pitch of the second outside thread (102); It also comprises a nut (103), the left end of nut (103) is provided with the second internal thread (104), the right-hand member of quick female joint (2) is provided with the second outside thread (105), and the second internal thread (104) is threaded with the second outside thread (105); The right-hand member of nut (103) is provided with the 3rd internal thread (106), and the 3rd internal thread (106) is threaded with the first outside thread (102); The hand of spiral of the second internal thread (104) is contrary with the hand of spiral of the first outside thread (102); The pitch of the 3rd internal thread (106) is not identical with the pitch of the first outside thread (102).Above-mentioned connecting head is easy for installation and tool joint pin can be avoided loosening with female joint simultaneously.
Description
Technical field
The utility model relates to air-conditioning technical field, is specifically a kind of connecting head be used on air-conditioning internal-external machine quick connecting pipe.
Background technique
The connecting head of prior art is formed by connecting by a quick female joint be connected with connecting tube and a quick tool joint pin be connected with air-conditioning internal machine or outer machine.Be provided with a sealing locking device in described quick female joint, be provided with one in described quick tool joint pin for the opening device of opening encapsulation locking device.During use, first quick tool joint pin and air-conditioning internal machine or outer machine are coupled together, and then quick tool joint pin is connected fast with quick female joint, make opening device back down sealing locking device.The connecting head of said structure has the following disadvantages in the using process of reality: the connecting head due to said structure has some refrigerant and leaks in air when taking apart, or after long-time use, tool joint pin and female joint loosen and make some refrigerant leak in air, thus cause the pollution of external environment condition.Therefore, for these reasons, a kind of easy for installation and connecting head that tool joint pin simultaneously can be avoided loosening with female joint is urgently needed, to solve the problem.
Model utility content
The technical problems to be solved in the utility model is, provides a kind of easy for installation and connecting head that tool joint pin simultaneously can be avoided loosening with female joint.
The technical solution of the utility model is, a kind of connecting head is provided, comprise a quick female joint be connected with connecting tube, a quick tool joint pin be connected with air-conditioning internal machine or outer machine, described quick female joint is provided with the first internal thread, described quick tool joint pin is provided with the first outside thread, the first described internal thread is threaded with the first outside thread, and the pitch of described first internal thread is identical with the second externally threaded pitch; It is characterized in that: described connecting head also comprises a nut, the left end of described nut is provided with the second internal thread, and the right-hand member of described quick female joint is provided with the second outside thread, and the second described internal thread is threaded with the second outside thread; The right-hand member of described nut is provided with the 3rd internal thread, and the 3rd described internal thread is threaded with the first outside thread; The hand of spiral of described second internal thread is contrary with the first externally threaded hand of spiral; The pitch of the 3rd described internal thread is not identical with the first externally threaded pitch.
After adopting above structure, the utility model compared with prior art, has the following advantages:
When the utility model connecting head uses, first quick female joint is inserted in quick tool joint pin, now owing to not producing relative rotation between the second internal thread, the second outside thread, therefore tool joint pin can screw in quick female joint from the 3rd internal thread, the first internal thread fast.And when wanting quick tool joint pin to select quick female joint, now turn nut, produce between second internal thread, the second outside thread and relatively rotate, but because the pitch of the 3rd internal thread is not identical with the first externally threaded pitch, therefore cause producing space between the first internal thread and the 3rd internal thread and making the first outside thread stuck and cannot screw out.Because the utility model connecting head only needs quick tool joint pin to screw in quick female joint when connecting, and cannot again outward winding after connection, therefore avoid and to have the situation that some refrigerant leaks in air when taking apart and occur, or long-time use after tool joint pin and the female joint situation that loosens and some refrigerant is leaked in air occur, thus avoid external environment condition and polluted.
Accompanying drawing explanation
Fig. 1 is the detonation configuration schematic diagram (part-structure blast) of the utility model connecting head.
Fig. 2 is the structural representation of the utility model connecting head.
Shown in figure 1, connecting tube, 2, female joint fast, 3, tool joint pin fast, 4, horn mouth, 5, through hole, 6, axle bed, the 7, first Returnning spring, 8, axle sleeve, 9, push rod, 10, axial bore, 11, push rod head, 12, ○-shaped seal ring groove, 13, internal thread, 14, ○-shaped seal ring, 15, axial hole, 15.1, cavity, 16, valve head, 17, valve rod, 18, front supporting plate, the 19, second Returnning spring, 20, rear supporting plate, 21, tubaeform copper cap, 22, outside thread.
101, the first internal thread, the 102, first outside thread, 103, nut, the 104, second internal thread, the 105, second outside thread, the 106, the 3rd internal thread.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, a kind of connecting head of the utility model, comprise the quick tool joint pin 3 that a quick female joint be connected with connecting tube 12, is connected with air-conditioning internal machine or outer machine, described quick female joint 2 is provided with the first internal thread 101, described quick tool joint pin 3 is provided with the first outside thread 102, the first described internal thread 101 is threaded with the first outside thread 102, and the pitch of described first internal thread 101 is identical with the pitch of the second outside thread 102; Described connecting head also comprises a nut 103, and the left end of described nut 103 is provided with the second internal thread 104, and the right-hand member of described quick female joint 2 is provided with the second outside thread 105, and the second described internal thread 104 is threaded with the second outside thread 105; The right-hand member of described nut 103 is provided with the 3rd internal thread 106, and the 3rd described internal thread 106 is threaded with the first outside thread 102; The hand of spiral of described second internal thread 104 is contrary with the hand of spiral of the first outside thread 102; The pitch of the 3rd described internal thread 106 is not identical with the pitch of the first outside thread 102; The pitch of the 3rd described internal thread 106 is greater than or less than the pitch of the first outside thread 102.
Be provided with a sealing locking device in the quick female joint 2 of the utility model connecting head, be provided with one in described quick tool joint pin 3 for the opening device of opening encapsulation locking device.
Be provided with a through hole 5 in described quick female joint 2, described sealing locking device is located in through hole 5, and described through hole 5 also communicates with copper connecting tube 1.1; Described sealing locking device comprises axle bed 6, first Returnning spring 7, axle sleeve 8 and the push rod 9 be located in through hole 5; Described axle bed 6 is fixed in through hole 5, and in the present embodiment, be provided with an axle bed groove in through hole 5, axle bed 6 is fixed in axle bed groove; Described axle bed 6 is provided with multiple axial bore 10, passing through for refrigeration agent; One end of described push rod 9 is fixedly connected with axle bed 6, and the other end of described push rod 9 is provided with a push rod head 11; Push rod 9 between described push rod head 11 and axle bed 6 is socketed successively the first Returnning spring 7 and axle sleeve 8, namely one end of the first Returnning spring 7 and axle bed 6 offset, and the other end of the first Returnning spring 7 and the other end of axle sleeve 8 offset, and reset in order to promote axle sleeve 8; Described axle sleeve 8 is slidably fitted in through hole 5, one end of described axle sleeve 8 can offset to seal with push rod head 11, namely axle sleeve 8 offsets to prevent refrigeration agent from passing through with push rod head 11 by the first Returnning spring 7, axle sleeve 8 is provided with an annular drift angle, push rod head 11 is provided with the inclined-plane of a circle, and annular drift angle offsets with the inclined-plane of annular; Quick female joint 2 inwall near push rod head 11 is provided with internal thread 13.
Two ends, left and right on described axle sleeve 8 periphery are all socketed with a ○-shaped seal ring 14, axle sleeve 8 periphery each side arranges a ○-shaped seal ring groove 12, in order to accommodating ○-shaped seal ring 14, which prevent refrigeration agent and pass through between axle sleeve 8 and quick female joint 2.
An axial hole 15 is provided with in described quick tool joint pin 3, the two ends of axial hole 15 are respectively two horn mouths 4, and described opening device is located in a cavity 15.1 of this axial hole 15, in the present embodiment, the two ends of cavity 15.1 are the mouth of two similar loudspeaker, and centre is a straight hole; Described opening device comprises valve head 16, valve rod 17 and a support; Described support is connected in sequence by front supporting plate 18, second Returnning spring 19, rear supporting plate 20; One end of described valve head 16 and one end of cavity 15.1 offset, and namely the inwall of one end of valve head 16 and the mouth of similar loudspeaker offsets; The other end of described valve head 16 is connected with valve rod 17; Front supporting plate 18, rear supporting plate 20 are triangular plate, and three angles of front supporting plate 18, rear supporting plate 20 are all slidably fitted on the inwall of straight hole; Described valve rod 17 is successively through front supporting plate 18, second Returnning spring 19, rear supporting plate 20; Away from being also provided with a tubaeform copper cap 21 in the axial hole 15 of valve head 16; Quick tool joint pin 3 near valve head 16 can offset with push rod head 11, namely offsets to seal near horn mouth 4 inwall of the quick tool joint pin 3 of valve head 16 and the end of push rod head 11; Described valve head 16, front supporting plate 18 are slidably fitted in cavity 15.1; Described quick tool joint pin 3 outer wall near valve head 16 is provided with outside thread 22, and described outside thread 22 is threaded with internal thread 13.
When quick female joint 2 is connected with quick tool joint pin 3, quick female joint 2 and quick tool joint pin 3 are screwed, at this moment quick tool joint pin 3 props up axle sleeve 8 and slides backward, such refrigeration agent rushes in quick tool joint pin 3 by the space between axle sleeve 8 and push rod head 11, until push rod head 11 props up valve head 16, and valve head 16 is supported backward, refrigeration agent can be entered in indoor set.
Below only just most preferred embodiment of the present utility model is described, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and its concrete structure allows to change.In every case the various change done in the protection domain of the utility model independent claims is all in protection domain of the present utility model.
Claims (1)
1. a connecting head, comprise a quick female joint (2) be connected with connecting tube (1), a quick tool joint pin (3) be connected with air-conditioning internal machine or outer machine, described quick female joint (2) is provided with the first internal thread (101), described quick tool joint pin (3) is provided with the first outside thread (102), described the first internal thread (101) is threaded with the first outside thread (102), and the pitch of described first internal thread (101) is identical with the pitch of the second outside thread (102); It is characterized in that: described connecting head also comprises a nut (103), the left end of described nut (103) is provided with the second internal thread (104), the right-hand member of described quick female joint (2) is provided with the second outside thread (105), and described the second internal thread (104) is threaded with the second outside thread (105); The right-hand member of described nut (103) is provided with the 3rd internal thread (106), and the 3rd described internal thread (106) is threaded with the first outside thread (102); The hand of spiral of described second internal thread (104) is contrary with the hand of spiral of the first outside thread (102); The pitch of the 3rd described internal thread (106) is not identical with the pitch of the first outside thread (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520398936.4U CN204677925U (en) | 2015-06-10 | 2015-06-10 | Connecting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520398936.4U CN204677925U (en) | 2015-06-10 | 2015-06-10 | Connecting head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204677925U true CN204677925U (en) | 2015-09-30 |
Family
ID=54177617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520398936.4U Active CN204677925U (en) | 2015-06-10 | 2015-06-10 | Connecting head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204677925U (en) |
-
2015
- 2015-06-10 CN CN201520398936.4U patent/CN204677925U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |