CN202152886U - An oil pipe joint - Google Patents
An oil pipe joint Download PDFInfo
- Publication number
- CN202152886U CN202152886U CN2011202118461U CN201120211846U CN202152886U CN 202152886 U CN202152886 U CN 202152886U CN 2011202118461 U CN2011202118461 U CN 2011202118461U CN 201120211846 U CN201120211846 U CN 201120211846U CN 202152886 U CN202152886 U CN 202152886U
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- CN
- China
- Prior art keywords
- groove
- face
- seal ring
- pipe
- connection
- 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 discloses an oil pipe joint, comprising a pipe with a large opening diameter and a pipe with a small opening diameter; the pipe with the large opening diameter is provided with a connecting opening and the pipe with the small opening diameter is provided with a connector; an inner diameter of the connecting opening is matched with an outer diameter of the connector; the bottom end face of the connecting opening is pressed against an end face of the connector; the end face of the connector is provided with a groove, which is provided with a seal ring inside; the seal ring has a circular section; the bottom of the groove is shaped as a circular arc; an opening portion of the groove is narrowed so an included angle a between the outside of the groove and the bottom end face of the connecting opening is less than 90 degrees. With the bottom of the groove shaped as the circular arc, the oil pipe joint has improved tightness; and with the opening portion of the groove being narrowed, the oil pipe joint prevents the seal ring from breaking away from a groove cavity during installation and thus guarantees stability of a seal ring position, thereby being easy to install and connect.
Description
Technical field
The utility model relates to a kind of linkage structure of oil pipe, belongs to the Machining Technology field.
Background technique
As having a lot of oil circuits in the machinery such as boats and ships, land facilities for transport and communication, these oil circuits are made up of various oil pipes, and oil pipe needs to connect in oil circuit.The Placement of existing oil pipe is many; Like thread type, FERRULETYPE, flared type, fastening-pressing type etc., its joint structure generally comprises large-diameter pipe and small-bore pipe, and large-diameter pipe has connection mouth; Small-bore pipe has connecting head; The inwall of connection mouth and the outer wall of connecting head are complementary, and in the oil connection like the thread type connection, the inwall of connection mouth and the outer wall of connecting head have the screw thread that is complementary.In addition in the oil connection of said structure; The connection mouth bottom end face compresses with the end face of connecting head mutually; For guaranteeing the sealing of oil connection; Existing oil connection generally is provided with a groove on the end face of connecting head, in groove, insert seal ring, has increased the sealing effect between the end face of connection mouth bottom end face and connecting head like this.Simultaneously; Because the groove on the connecting head end face of existing oil connection is square, and the cross section of seal ring is circular, and the shape owing to groove and seal ring does not match on the one hand; Reduced the area of contact of groove and seal ring, the sealing of oil connection is affected; On the other hand, when oil connection is installed, be circular seal ring because square groove is difficult to constant cross-section, promptly the seal ring positional stability is bad, the easy like this inconvenience that causes oil connection to be installed.
The model utility content
To above-mentioned situation, the problem that the utility model quasi-solution is determined provides a kind of good airproof performance, oil connection easy for installation.
For achieving the above object, the utility model has adopted following technological scheme: a kind of oil connection, and it comprises large-diameter pipe and small-bore pipe; Said large-diameter pipe has connection mouth; Said small-bore pipe has connecting head, and the internal diameter of said connection mouth matches with the external diameter of connecting head, and said connection mouth bottom end face compresses with the end face of connecting head mutually; The end face of said connecting head is provided with groove; Be equipped with seal ring in the said groove, the cross section of said seal ring is circular, and the bottom of said groove is a circular arc.
The oral area of said groove is brings shape together, and promptly the angle ∠ a of the outside of groove and connection mouth bottom end face satisfies: ∠ a＜90 degree.Be preferably: 40 degree＜∠ a＜75 degree.
The curvature of the circular arc of the bottom of said groove is identical with the curvature in the cross section of said seal ring.
Adopt such scheme, the linkage structure of the oil pipe of the utility model, because the bottom of groove is a circular arc, therefore the shape with the cross section of seal ring is complementary, and increases the area of contact of know clearly groove and seal ring, has improved the sealing of oil connection; Simultaneously, bring shape together because the oral area of groove is, promptly the angle ∠ a of the outside of groove and connection mouth bottom end face satisfies: ∠ a＜90 degree.When oil connection was installed, seal ring is not easy to break away from groove to be held like this, and promptly the seal ring positional stability is good, and it is easy to connect that oil connection is installed.
Description of drawings
Fig. 1 is the sectional structure chart of the utility model oil connection.
Among the figure: 1-large-diameter pipe, 2-small-bore pipe, 3-connection mouth, 4-connecting head, 5-groove, 6-seal ring, the bottom of 7-groove.
Embodiment
As shown in Figure 1, the oil connection of the utility model, it comprises large-diameter pipe 1 and small-bore pipe 2; Said large-diameter pipe 1 has connection mouth 3, and said small-bore pipe 2 has connecting head 4, and the internal diameter of said connection mouth 3 matches with the external diameter of connecting head 4; In the oil connection that connects like thread type, the outer wall of the inwall of connection mouth 3 and connecting head 4 has the screw thread that is complementary, and connection mouth 3 and connecting head 4 interconnect through screw thread; Certainly connection mouth 3 is connected also other structure of available existing technology with connecting head 4; Since little with the characteristics degree of association of the utility model, therefore, only do simple the description.
After oil connection connects; Connection mouth 3 interconnects with connecting head 4; Said connection mouth 3 bottom end faces compress with the end face of connecting head 4 mutually, and the end face of said connecting head 4 is provided with groove 5, are equipped with seal ring 6 in the said groove 5; The cross section of said seal ring 6 is circular, and the structure of the oil connection of said structure and existing technology does not have the difference of essence.
The characteristics of the oil connection of the utility model are: the bottom 7 of said groove is circular arc.In general the curvature of the circular arc of the bottom 7 of said groove is identical with the curvature in the cross section of said seal ring 6.
Another characteristics of the oil connection of the utility model are: the oral area of said groove 5 is brings shape together, and promptly the angle ∠ a of the outside of groove 5 and connection mouth 3 bottom end faces satisfies: ∠ a＜90 degree.As preferably, ∠ a satisfies: 40 degree＜∠ a＜75 are spent.
Claims (4)
1. oil connection; It comprises large-diameter pipe (1) and small-bore pipe (2), and said large-diameter pipe (1) has connection mouth (3), and said small-bore pipe (2) has connecting head (4); The internal diameter of said connection mouth (3) matches with the external diameter of connecting head (4); Said connection mouth (3) bottom end face compresses with the end face of connecting head (4) mutually, and the end face of said connecting head (4) is provided with groove (5), is equipped with seal ring (6) in the said groove (5); The cross section of said seal ring (6) is circular, it is characterized in that the bottom (7) of said groove is circular arc.
2. oil connection according to claim 1, the oral area that it is characterized in that said groove (5) is brings shape together, and promptly the angle ∠ a of the outside of groove (5) and connection mouth (3) bottom end face satisfies: ∠ a＜90 degree.
3. oil connection according to claim 2 is characterized in that the outside of said groove (5) and the angle ∠ a of connection mouth (3) bottom end face satisfy: 40 degree＜∠ a＜75 degree.
4. according to claim 1 or 2 or 3 described oil connections, it is characterized in that the curvature of circular arc of bottom (7) of said groove is identical with the curvature in the cross section of said seal ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202118461U CN202152886U (en) | 2011-06-22 | 2011-06-22 | An oil pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202118461U CN202152886U (en) | 2011-06-22 | 2011-06-22 | An oil pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152886U true CN202152886U (en) | 2012-02-29 |
Family
ID=45693382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202118461U Expired - Fee Related CN202152886U (en) | 2011-06-22 | 2011-06-22 | An oil pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777712A (en) * | 2012-07-11 | 2012-11-14 | 宁波嘉诚液压有限公司 | Transition joint |
-
2011
- 2011-06-22 CN CN2011202118461U patent/CN202152886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777712A (en) * | 2012-07-11 | 2012-11-14 | 宁波嘉诚液压有限公司 | Transition joint |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20180622 |