CN203230979U - Outer screw straight joint - Google Patents
Outer screw straight joint Download PDFInfo
- Publication number
- CN203230979U CN203230979U CN 201320288686 CN201320288686U CN203230979U CN 203230979 U CN203230979 U CN 203230979U CN 201320288686 CN201320288686 CN 201320288686 CN 201320288686 U CN201320288686 U CN 201320288686U CN 203230979 U CN203230979 U CN 203230979U
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- outside thread
- utility
- outer screw
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides an outer screw straight joint which comprises a plastic housing and a stainless steel pipe joint. A step hole penetrates two end surfaces of the plastic housing. The stainless steel pipe joint is sleeved in the step hole. An end of the stainless steel pipe joint is provided with a threaded member. An outside thread is provided on the threaded member. Grooves are provided on the outside thread along the axial direction. The cross section of each groove is triangular. The depth of each groove is smaller than the tooth height of the outside thread. According to the outer screw straight joint provided by the utility model, the plurality of grooves are arranged on the outside thread. When the outer screw straight joint is matched with the internal thread, integral adhibition degree and sealing performance are improved. Rectangular projections provided at the side wall of the plastic housing can facilitate mounting. The outer screw straight joint provided by the utility model has the following advantages: simple structure, high convenience in mounting, and high sealing performance.
Description
Technical field
The utility model relates to a kind of pipe joint, particularly a kind of outside nut straight coupling.
Background technique
In supply pipe, need use pipe joint usually, the screw-thread fit of traditional pipe joint is not tight, causes poor sealing performance, needs to use the sealing package adhesive tape, and is very inconvenient.
The model utility content
(1) technical problem that will solve
The technical problems to be solved in the utility model provides the outside nut straight coupling of good seal performance between a kind of screw thread.
(2) technological scheme
For solving the problems of the technologies described above, the utility model provides a kind of outside nut straight coupling, comprise plastic casing 1 and stainless steel joint for pipeline 2, the both ends of the surface of described plastic casing 1 are penetrated with shoulder hole 11, described stainless steel joint for pipeline 2 is nested in the described shoulder hole 11, the end of described stainless steel joint for pipeline 2 is provided with threaded body 21, offer outside thread on the described threaded body 21, offer groove 22 along axial direction on the described outside thread, the cross section of described groove 22 is triangle, and the degree of depth of described groove 22 is less than described externally threaded tooth height.
Further, described groove 22 is at least four and circumferentially be distributed on the described outside thread.
Further, the sidewall of described plastic casing 1 circumferentially is evenly equipped with rectangular preiection 12.
(3) beneficial effect
The utility model outside nut straight coupling offers some grooves at outside thread, during with screw-internal thread fit, can improve whole applying degree, strengthens sealability; At the rectangular preiection that the sidewall of plastic casing is provided with, can conveniently install; The utility model outside nut straight coupling, simple in structure, easy for installation and good seal performance.
Description of drawings
Fig. 1 is the structural representation of the utility model outside nut straight coupling;
Fig. 2 is the structural representation of another angle of the utility model outside nut straight coupling.
Embodiment
Consult Fig. 1～Fig. 2, the utility model provides a kind of outside nut straight coupling, comprise plastic casing 1 and stainless steel joint for pipeline 2, plastic casing 1 is whole cylindrical, both ends of the surface at plastic casing 1 are penetrated with shoulder hole 11, stainless steel joint for pipeline 2 is nested in this shoulder hole 11, be provided with threaded body 21 in the end of stainless steel joint for pipeline 2, offer outside thread on the threaded body 21, axial direction in the outside thread upper edge and offer groove 22, the cross section of this groove 22 is triangle, and the degree of depth of groove 22 is less than externally threaded tooth height; In the present embodiment, groove 22 is at least four and circumferentially be distributed on the outside thread; Install for convenience, circumferentially be evenly equipped with rectangular preiection 12 at the sidewall of plastic casing 1, in the present embodiment.
The utility model outside nut straight coupling offers some grooves at outside thread, during with screw-internal thread fit, can improve whole applying degree, strengthens sealability; At the rectangular preiection that the sidewall of plastic casing is provided with, can conveniently install; The utility model outside nut straight coupling, simple in structure, easy for installation and good seal performance.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. outside nut straight coupling, it is characterized in that: comprise plastic casing (1) and stainless steel joint for pipeline (2), the both ends of the surface of described plastic casing (1) are penetrated with shoulder hole (11), described stainless steel joint for pipeline (2) is nested in the described shoulder hole (11), the end of described stainless steel joint for pipeline (2) is provided with threaded body (21), described threaded body offers outside thread on (21), offer groove (22) along axial direction on the described outside thread, the cross section of described groove (22) is triangle, and the degree of depth of described groove (22) is less than described externally threaded tooth height.
2. outside nut straight coupling as claimed in claim 1 is characterized in that: described groove (22) is at least four and circumferentially be distributed on the described outside thread.
3. outside nut straight coupling as claimed in claim 1, it is characterized in that: the sidewall of described plastic casing (1) circumferentially is evenly equipped with rectangular preiection (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320288686 CN203230979U (en) | 2013-05-23 | 2013-05-23 | Outer screw straight joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320288686 CN203230979U (en) | 2013-05-23 | 2013-05-23 | Outer screw straight joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230979U true CN203230979U (en) | 2013-10-09 |
Family
ID=49287106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320288686 Expired - Fee Related CN203230979U (en) | 2013-05-23 | 2013-05-23 | Outer screw straight joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230979U (en) |
-
2013
- 2013-05-23 CN CN 201320288686 patent/CN203230979U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20150523 |
|
| EXPY | Termination of patent right or utility model |