CN209654403U - A kind of jointing structure - Google Patents
A kind of jointing structure Download PDFInfo
- Publication number
- CN209654403U CN209654403U CN201920413698.8U CN201920413698U CN209654403U CN 209654403 U CN209654403 U CN 209654403U CN 201920413698 U CN201920413698 U CN 201920413698U CN 209654403 U CN209654403 U CN 209654403U
- Authority
- CN
- China
- Prior art keywords
- bulge loop
- mounting groove
- sealing ring
- annular gap
- jointing structure
- 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.)
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Abstract
The utility model provides a kind of jointing structure, belongs to field of mechanical technique.It solve existing jointing structure connection when sealing ring easily slide out the problems such as.This jointing structure, including connecting rod, thread segment is provided in connecting rod, mounting groove in a ring is provided on the lateral surface of thread segment, it is provided with the bulge loop in a ring of protrusion on the bottom surface of mounting groove, helical teeth is provided on the lateral surface of bulge loop, helical teeth has several and is along the circumferential direction arranged successively, there is upper annular gap between the upper side of mounting groove and the upper surface of bulge loop, there is lower annular gap between the downside of mounting groove and the lower end surface of bulge loop.After this jointing structure installs sealing ring, it can prevent sealing ring installation from skidding off during being threadedly engaged connection.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of jointing structure.
Background technique
Connection is exactly that two components are connected into the process of a complex component, common connection structure by connection structure
Including screw connection structure, buckle connecting structure, clamp connection structure and structure is welded and fixed etc., wherein screw connection structure,
Buckle connecting structure and clamp connection structure are detachable structure.In various connection structures, often has Packed requirement, most
Common sealing structure is that sealing element is arranged between the two components.Some have the component of particular/special requirement, will also be in connection structure
Middle setting sealing element.Common sealing member material has NRB, RP, FAB, FKM, PTFE etc..
Screw connection structure includes being provided with externally threaded screw rod, threaded coupling nut on screw rod, when there is seal request,
Sealing ring is also set on screw rod, nut, which is resisted against on sealing ring, forms sealing.This structure is that sealing is formed on end face, by
There can be certain gap when external screw thread and internal screw thread engage, under condition of high voltage, fluid may be from external screw thread and interior
Gap location between screw thread leaks out.It therefore, is that sealing ring is set between external screw thread and internal screw thread there are also a kind of sealing structure, often
The structure seen is the setting mounting groove at external screw thread, and sealing ring is embedded into mounting groove.But the sealing ring installation after including
During screw thread and external screw thread cooperation, sealing ring is easy to skid off mounting groove as threads turn is extruded, and product is not achieved
Sealing effect.
Summary of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to propose a kind of jointing structure,
The technical issues of solution is how to prevent sealing ring installation from skidding off.
The purpose of this utility model can be realized by the following technical scheme:
A kind of jointing structure, including connecting rod are provided with thread segment, the outside of the thread segment in the connecting rod
Mounting groove in a ring is provided on face, which is characterized in that in a ring convex of protrusion is provided on the bottom surface of the mounting groove
Ring is provided with helical teeth on the lateral surface of the bulge loop, and the helical teeth has several and is along the circumferential direction arranged successively, the mounting groove
Upper side and bulge loop upper surface between have upper annular gap, between the downside of the mounting groove and the lower end surface of bulge loop
With lower annular gap.
When sealing ring is installed, sealing ring is embedded into mounting groove, due to the bottom surface of bulge loop protrusion mounting groove, bulge loop it is outer
Side can form with the medial surface of sealing ring and be interference fitted, and be threaded into section in tool internal thread component in this way or back-out
When thread segment, bulge loop can produce bigger frictional force, to preferably sealing ring be prevented to skid off.It is arranged on the lateral surface of bulge loop
The side wall of helical teeth, helical teeth can generate barrier effect during having internal thread component and being screwed in and out, can be better
Sealing ring is prevented to skid off.The setting of upper annular gap and lower annular gap can preferably utilize upper side, the bulge loop of mounting groove
Lower end surface when being screwed into the barrier effect of sealing ring, and preferably using bulge loop upper surface and mounting groove downside
It when back-outing to the barrier effect of sealing ring, skid off sealing ring will not easily during installation.Pacified using this jointing structure
After filling sealing ring, it can prevent sealing ring installation from skidding off during being threadedly engaged connection.
In above-mentioned jointing structure, the bulge loop is annular in shape, and the outer diameter of the bulge loop is less than the small of thread segment
Diameter.
Bulge loop is annular in shape, the frictional force that sealing ring can be made more evenly to be distributed, and reduces the appearance of short slab, guarantees close
Seal is not easy to skid off.During installation, since the outer diameter of bulge loop is less than the path of thread segment, guarantee sealing ring is close in mounting groove
Blocking of the both ends of seal by mounting groove side, skids off sealing ring easily during installation.
In above-mentioned jointing structure, the tilt angle of the helical teeth is 30 ° -60 °.
Setting can guarantee that helical teeth generates a better resistance to sealing ring in this way, be conducive to prevent sealing ring and skid off.
In above-mentioned jointing structure, the upper surface and lower end surface of the bulge loop are parallel.
In this way when installing sealing ring, sealing ring not will lead to banking, install more convenient sealing effect
More preferably.
In above-mentioned jointing structure, the upper annular gap and lower annular gap in the axial direction of same size.
Both sides stress is all relatively uniform, in this way regardless of during installation or disassembly, sealing ring will not all be slided easily
It falls.
In above-mentioned jointing structure, the width of the bulge loop in the axial direction is greater than the upper annular gap in axial direction
On width.
The contact area that bulge loop and sealing ring can be increased in this way, skid off sealing ring will not easily during installation.
Compared with prior art, the utility model has the advantage that
The bulge loop of protrusion is set on the bottom surface of mounting groove, and helical teeth is set on the lateral surface of bulge loop, while the upside of bulge loop
With downside have upper annular gap and lower annular gap, during installation bulge loop can with sealing ring generate interference fit and it is such
Structure can give one bigger resistance of sealing ring, to prevent sealing ring from skidding off during installation.
The outer diameter of bulge loop is less than the path of thread segment, upper annular gap and lower annular gap in the axial direction of same size,
The width of bulge loop in the axial direction is greater than the width of upper annular gap in the axial direction, these can further prevent sealing ring pacifying
It is skidded off when dress.
Detailed description of the invention
Fig. 1 is the main view of this jointing structure；
Fig. 2 is the cross-sectional view of this jointing structure.
In figure, 1, connecting rod；2, thread segment；3, mounting groove；4, bulge loop；5, helical teeth；6, upper annular gap；7, between lower annular
Gap.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As depicted in figs. 1 and 2, a kind of jointing structure, including connecting rod 1, the lower end of connecting rod 1 are provided with thread segment
2, the upper end of connecting rod 1 is polished rod, and mounting groove 3 in a ring is provided on the lateral surface of thread segment 2, and mounting groove 3 is used to install
Sealing ring is provided with the bulge loop 4 in a ring of protrusion on the bottom surface of mounting groove 3, it is preferable that bulge loop 4 is circular ring shape, bulge loop 4
Outer diameter is less than the path of thread segment 2, and guarantee sealing ring is in mounting groove, blocking of the both ends of sealing ring by mounting groove side,
Skid off sealing ring easily during installation.The rounded ring of bulge loop 4 makes sealing ring, and stress is more evenly during installation.Bulge loop 4 it is upper
End face and lower end surface are parallel.Helical teeth 5 is provided on the lateral surface of bulge loop 4, helical teeth 5 has several and along the circumferential direction successively uniform
Arrangement, the tilt angle of helical teeth 5 are 30 ° -60 °, and when angle is 45 °, effect is best.The upper side of mounting groove 3 and bulge loop 4
There is upper annular gap 6 between upper surface, there is lower annular gap 7 between the downside of mounting groove 3 and the lower end surface of bulge loop 4,
Upper annular gap 6 is equal with the width of lower annular gap 7, and such both sides stress is all relatively uniform, regardless of in installation or disassembly
During, sealing ring will not all slide easily.The width of bulge loop 4 in the axial direction is greater than the width of upper annular gap 6 in the axial direction
Degree, the width of bulge loop 4 in the axial direction are greater than the width of lower annular gap 7 in the axial direction.Bulge loop 4 and sealing ring can be increased in this way
Contact area, skid off sealing ring will not easily during installation.
The bulge loop 4 of protrusion, when sealing ring is embedded into mounting groove 3, the lateral surface of bulge loop 4 are set on the bottom surface of mounting groove 3
Interference fit is generated between the medial surface of sealing ring, is threaded into section 2 in tool internal thread component in this way or back-outs spiral shell
When line section 2, bulge loop 4 can produce bigger frictional force, to preferably sealing ring be prevented to skid off.It is set on the lateral surface of bulge loop 4
Helical teeth 5 is set, the side wall of helical teeth 5 can generate barrier effect during having internal thread component and being screwed in and out, that is, generate
Anti-skidding effect preferably can prevent sealing ring from skidding off.The setting of upper annular gap 6 and lower annular gap 7 can be preferably sharp
With the upper side of mounting groove 3, bulge loop 4 lower end surface when being screwed into the barrier effect of sealing ring, and preferably utilize bulge loop 4
Upper surface and mounting groove 3 downside when back-outing to the barrier effect of sealing ring, make sealing ring during installation will not be easily
It skids off.After sealing ring is installed using this jointing structure, it can prevent sealing ring from installing during being threadedly engaged connection
It skids off.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (6)
1. a kind of jointing structure, including connecting rod (1), thread segment (2), the screw thread are provided on the connecting rod (1)
Mounting groove (3) in a ring is provided on the lateral surface of section (2), which is characterized in that be provided on the bottom surface of the mounting groove (3)
The bulge loop (4) in a ring of protrusion is provided with helical teeth (5) on the lateral surface of the bulge loop (4), the helical teeth (5) have it is several simultaneously
It is along the circumferential direction arranged successively, there is upper annular gap between the upper side of the mounting groove (3) and the upper surface of bulge loop (4)
(6), there are lower annular gap (7) between the downside of the mounting groove (3) and the lower end surface of bulge loop (4).
2. jointing structure according to claim 1, which is characterized in that the bulge loop (4) is annular in shape, the bulge loop
(4) outer diameter is less than the path of thread segment (2).
3. jointing structure according to claim 1, which is characterized in that the tilt angle of the helical teeth (5) be 30 °-
60°。
4. jointing structure according to claim 1, which is characterized in that the upper surface and lower end surface of the bulge loop (4)
It is parallel.
5. jointing structure according to claim 1 to 4, which is characterized in that the upper annular gap (6) is under
Annular gap (7) in the axial direction of same size.
6. jointing structure according to claim 5, which is characterized in that the width of the bulge loop (4) in the axial direction is big
In the width of the upper annular gap (6) in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413698.8U CN209654403U (en) | 2019-03-28 | 2019-03-28 | A kind of jointing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413698.8U CN209654403U (en) | 2019-03-28 | 2019-03-28 | A kind of jointing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209654403U true CN209654403U (en) | 2019-11-19 |
Family
ID=68528394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920413698.8U Active CN209654403U (en) | 2019-03-28 | 2019-03-28 | A kind of jointing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209654403U (en) |
-
2019
- 2019-03-28 CN CN201920413698.8U patent/CN209654403U/en active Active
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