CN105637274B - Pipe fitting - Google Patents
Pipe fitting Download PDFInfo
- Publication number
- CN105637274B CN105637274B CN201480057036.1A CN201480057036A CN105637274B CN 105637274 B CN105637274 B CN 105637274B CN 201480057036 A CN201480057036 A CN 201480057036A CN 105637274 B CN105637274 B CN 105637274B
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- China
- Prior art keywords
- inclined plane
- core
- outward flange
- flange
- side wall
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/091—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
- Joints With Pressure Members (AREA)
Abstract
The pipe fitting of a kind of stress concentration that can suppress to produce in the corner for being formed at the outward flange of core and the axial intensity for being able to ensure that outward flange is provided.By the core (14) due to resin-made outer circumferential surface and outward flange (50) and formed corner formed concave circular arc shape the 1st inclined plane (52), so as to suppress effect have the external force in direction intersecting axially when diagonal section produce stress concentration.The 2nd inclined plane (64) abutted against with the 1st inclined plane (52) is set on the inward flange (60) of metal acorn nut (54), when fastening acorn nut (54), the 2nd side wall (61) of inward flange (60) is in contact with the 1st side wall (51) of outward flange (50), and the 2nd inclined plane (64) is in contact with the 1st inclined plane (52) of core (14).The contact area between inward flange (60) and outward flange (50) can be increased, it can be ensured that the axial intensity of outward flange (50).
Description
Technical field
The present invention relates to a kind of pipe fitting.
Background technology
Pipe fitting has been used when pipe to be connected to nipple of machine etc..As the pipe fitting, there is union adaptor (day
Text：ユ ニ オ Application is after hand) (for example, referring to patent document 1).Union adaptor is configured to include the tubular being connected with nipple
Core and acorn nut for core to be fixed on to nipple.
Union adaptor by the way that union nut to be tightened to the external screw thread of nipple so that the inward flange of acorn nut to
Nipple side pushes the outward flange of core, and outward flange is clamped and fixed between inward flange and nipple.
Side wall orthogonal to the axial direction is equipped with the inward flange side of outward flange, is equipped with the outward flange side of inward flange and evagination
The opposite side wall of the side wall of edge, when tightening acorn nut, the side wall of outward flange is subject to the side wall from inward flange
Pushing force.
Prior art literature
Patent document
Patent document 1：2005-No. 114001 publications of Japanese Unexamined Patent Publication
The content of the invention
Problems to be solved by the invention
But union adaptor since outward flange is clamped and fixed between the inward flange of acorn nut and nipple, because
, when the external force in direction intersecting axially acts on core, stress concentration is in the corner of outward flange for this.Set in core for synthesis
In the case of fat, it is contemplated that durability, it is preferable to suppress stress concentration as much as possible.
It is general to consider to form arc surface in the corner of outward flange in order to suppress the stress concentration.But when in view of stress
When concentrating and increasing arc surface, there is the tendency that the side wall for the outward flange for bearing the pushing force from inward flange diminishes, convex
Contact area between edge and outward flange diminishes and pushing force concentrates on the part of outward flange, therefore outward flange is axial strong
Degree reduces.
Contact area between inward flange and outward flange to be ensured, it is also considered that outward flange and acorn nut is maximized, but
It is the size-enlargement of connector, cost also rises.In addition, when the contact area between inward flange to be ensured and outward flange reduces
During the diameter of core, the internal diameter of core reduces, and causes flow-reduction.
The present invention considers the above-mentioned fact, and its purpose is to provide a kind of corner even in the outward flange for being formed at core
Form for suppress stress concentration inclined plane in the case of, can also ensure that outward flange axial intensity pipe fitting.
The solution used to solve the problem
The pipe fitting of 1st technical solution includes：Core, it is synthetic resin system and is formed as cylindric, and in length side
Tube body is connected with to one end；Outward flange, it is ring-type and is formed at the other end of the core, and is radially oriented outside and prolongs
Stretch；Bearing surface, it is formed at the outward flange, and including the 1st inclined plane, the 1st inclined plane be arranged on the core with it is described outer
Corner between flange and the outer circumferential surface inclination under section axially during observation relative to the core；And cap-shaped spiral shell
Mother, it includes：Canister portion, it is formed with internal thread part；Inward flange, it is radially oriented inner side protrusion from the end of cartridge and has
Have for the perforative hole of the core；And by bearing surface, it is abutted against with the bearing surface, this is included being formed at institute by bearing surface
State the corner of inward flange and the 2nd inclined plane abutted against with the 1st inclined plane.
The pipe fitting of 1st technical solution between nipple and the outward flange for being formed at core for example by configuring ring-type
Containment member and the internal thread part of acorn nut is threadingly engaged in into the external thread part of nipple and is anchored on nipple
External thread part, the connection pipe body at the connecting portion arranged on core, so as to be connected with each other tube body and nipple.
Further, since adapter body outward flange formed with including arranged on the 1st inclined plane in the corner of outward flange
Bearing surface, the inward flange of acorn nut be equipped with the 2nd inclined plane that includes abutting against with the 1st inclined plane of outward flange and with it is outer
The bearing surface of flange abut against by bearing surface, therefore the inward flange when fastening acorn nut can be increased and be in contact with outward flange
Contact area.Therefore, it is suppressed that outward flange corner produce stress concentration and ensure that the orthogonal to the axial direction of core
The intensity in direction, and it is able to ensure that the axial intensity of outward flange.
In addition, inclined plane said here not only includes, with the inclined linear inclined plane of constant angle, also including inclining
The curved inclined plane that rake angle gradually changes.
2nd technical solution is in the pipe fitting of the 1st technical solution, and the radial dimension h of the 1st inclined plane is relative to from institute
The radial dimension H for stating the outward flange along radial direction of the outer circumferential surface of core untill the outer circumferential surface of the outward flange is set
For more than 40%.
In the pipe fitting of the 2nd technical solution, since the radial dimension h of the 1st inclined plane is relative to the outer circumferential surface from core
The radial dimension H of the outward flange along radial direction untill the outer circumferential surface of outward flange is set for more than 40%, therefore can be had
Effect ground suppresses the stress concentration when effect has the external force in direction intersecting axially on core.
For 3rd technical solution in the pipe fitting of the 1st technical solution or the 2nd technical solution, the 1st inclined plane is curvature half
Footpath is the concaved circular cambered surface of r1, and the 2nd inclined plane is the convex arc surface that radius of curvature is r2, and is set as r1=r2.
In the pipe fitting of the 3rd technical solution, since the 1st inclined plane has been set to the concaved circular cambered surface that radius of curvature is r1,
2nd inclined plane has been set to the convex arc surface that radius of curvature is r2, and has been set for r1=r2, therefore can make to be formed as recessed circle
1st inclined plane of cambered surface is reliably abutted against with being formed as the 2nd inclined plane of convex arc surface in entire surface.
It is described in the pipe fitting of any technical solution of 4th technical solution in the technical solution of the 1st technical solution~the 3rd
Bearing surface has 1st side wall orthogonal with the outer circumferential surface of the core, described to be had and the 1st side wall phase by bearing surface
The 2nd side wall abutted.
In the pipe fitting of the 4th technical solution, bearing surface includes 1st side wall orthogonal with the outer circumferential surface of core and formation
For the 1st inclined plane of concaved circular cambered surface, by bearing surface include the 2nd side wall that is abutted against with the 1st side wall and with the 1st inclined plane phase
The 2nd inclined plane abutted.
Therefore, it is possible to abut against the 1st inclined plane and the 2nd inclined plane, and the 1st side wall and the 2nd side wall can be made
Abut against.
The effect of invention
It is as discussed above, pipe fitting according to the present invention, even in the corner for the outward flange for being formed at core
In the case of foring the inclined plane for suppressing stress concentration, the axial intensity of outward flange can also ensure that.
Brief description of the drawings
Fig. 1 is sectional view pipe fitting, along axis for representing one embodiment of the present invention.
Fig. 2A is to represent amplification state, along axis that the inward flange of acorn nut is in contact with the outward flange of core
Sectional view.
Fig. 2 B be represent that the inward flange of acorn nut and the outward flange of core separate it is state, cutd open along the amplification of axis
View.
Fig. 3 is the state for representing to be connected to pitch tube and nipple on the pipe fitting of one embodiment of the present invention
, sectional view along axis.
Fig. 4 is the bearing surface for the pipe fitting for representing the 2nd embodiment and sectional view by bearing surface, along axis.
Fig. 5 is the bearing surface for the pipe fitting for representing the 3rd embodiment and sectional view by bearing surface, along axis.
Embodiment
[the 1st embodiment]
According to the pipe fitting 10 of the 1st embodiment of the brief description of the drawings present invention.
As shown in Figure 1, the pipe fitting 10 of present embodiment is configured to include adapter body 12 and acorn nut 54.
(adapter body)
Adapter body 12 includes core 14, sleeve 16, middle ring 18, engaging releasing component 20, locking ring 24 and conduct
The O-ring seals 22 of leak-stopping component, these components make mutual centre axis as one man be configured.In addition, in present embodiment
In, core 14, sleeve 16, middle ring 18 and engaging release the formed products that component 20 is synthetic resin.
The arrow L direction sides of core 14 are formed to the core 26 being inserted into the pitch tube P as connecting object.
Formed with a pair of of intercalation groove 28 on the outer circumferential surface of the core 26, O-ring seals 22 have been respectively embedded into these intercalation grooves 28.When
Core 26 is fashionable to pitch tube P interpolations, which is close to the inner peripheral surface of pitch tube P, and to pitch tube P and core 14
Between sealed.
The arrow R direction sides of core 14 are formed as the large-diameter portion 30 formed in a manner of the diameter that diameter is more than core 26,
At large-diameter portion 30, the boundary between core 26 has been formed about groove 32.
Middle ring 18 is configured at the outside of the outer circumferential surface of the arrow L direction sides of core 14.
The end of the arrow R direction sides of middle ring 18 enters the groove 32 of core 14 and is embedded in the groove 32 of core 14, by
This middle ring 18 is fixed on core 14.
The hollow cylinder surrounded by the end of the inner peripheral surface of middle ring 18, the outer circumferential surface of core 26 and large-diameter portion 30 is inserted
Enter the size for the end partial insertion certain size that portion 34 is set so as to for pitch tube P.
Formed with being formed as concavo-convex sleeve holding section 36 on the outer circumferential surface of the arrow R direction sides of middle ring 18.
Sleeve 16 is shaped generally as tubular, and is configured at the outside of the outer circumferential surface of the arrow L direction sides of middle ring 18.
On the inner peripheral surface of sleeve 16 formed with arrow L direction sides can be chimeric with sleeve holding section 36 it is concavo-convex
Engaged part 38.Sleeve holding section 36 is embedded in the engaged part 38 and middle ring 18 is fixed on sleeve 16.
It is sequentially formed with the ratio engaged part 38 of sleeve 16 by the position of arrow L direction sides with towards arrow L directions
Go and internal diameter reduce rake 40, the 1st of constant inner diameter the constant footpath portion 42 and the internal diameter in internal diameter footpath portion 42 more constant than the 1st it is small
The 2nd constant footpath portion 44.
Locking ring 24 configures in the inner circumferential side of the rake 40 of sleeve 16 and is that middle ring 18 engages releasing with described later
Position between component 20.The locking ring 24 elastic can become with multiple to inner circumferential side is prominent at spaced intervals in the circumferential
The claw 24A of shape, the outside diameter of slightly less than pitch tube P is set to by the imaginary diameter of a circle of the top ends of claw 24A.
Engaging releases component 20 and is formed as internal diameter less times greater than the substantially tubular of the outside diameter of pitch tube P, so as in
The mode of mandrel line K1 movements is configured at the inner circumferential side of sleeve 16.The engaging, which releases component 20, to be included being used for arrow R direction sides
Push claw 24A pushes rake 46 and the constant outer diameter portion 48 positioned at the arrow L direction sides for pushing rake 46.
Do not come off to make engaging release component 20 from sleeve 16, the constant outer diameter portion 48 that engaging releases component 20 is formed
It is less than the internal diameter in the 1st constant footpath portion 42 of sleeve 16 for outside diameter, and outside diameter is more than the internal diameter in the 2nd constant footpath portion 44.
As shown in Figure 1, Figure 2 shown in A and Fig. 2 B, in the end in the arrow R directions of the large-diameter portion 30 of core 14 formed with towards footpath
The cricoid outward flange 50 extended laterally.
As shown in Figure 2 B, in the corner that the 1st side wall 51 of the outer circumferential surface due to large-diameter portion 30 and outward flange 50 is formed
(base portion of outward flange 50) is formed with the 1st inclined plane 52.
When 1st side wall 51 of present embodiment is observed under the axial section along core 14 with the axis of core 14
It is orthogonal.There is song in the radial outside in large-diameter portion 30 when 1st inclined plane 52 is observed under the axial section along core 14
Rate center, concave circular arc shape that radius is r1, and are smoothly connected to the outer circumferential surface and the 1st side wall 51 of large-diameter portion 30.
In addition, the bearing surface of the 1st side wall 51 and the 1st inclined plane 52 of present embodiment equivalent to the present invention.
(acorn nut)
As shown in Figure 1, Figure 2 shown in A and Fig. 2 B, acorn nut 54 is formed by the hardware of hexa-prism.From arrow on axle center
The end of head R direction sides towards arrow L direction sides formed with the 1st hole 56, the 1st hole 56 arrow L direction sides formed with internal diameter
Less than the 2nd hole 58 of the internal diameter in the 1st hole 56.In the 1st hole 56, from the end of arrow R direction sides towards bottom hole formed with interior spiral shell
Line 62.
The internal diameter in the 1st hole 56 is set so as to the size being inserted into for the outward flange 50 of core 14.On the other hand, the 2nd hole
58 internal diameter is set to be less than the outside diameter of the outside diameter of the outward flange 50 of core 14 and the large-diameter portion 30 less times greater than core 14
Size.Thus, acorn nut 54 can rotate against freely relative to core 14, and move in the axial direction freely.
Be formed as the interior table from the 1st hole 56 between the end of arrow L direction sides and the bottom in the 1st hole 56 of acorn nut 54
Facing to the cricoid inward flange 60 of radially inner side extension.
2nd side wall 61 of 56 side of the 1st hole (arrow R direction sides) of inward flange 60 is along the axial of acorn nut 54
It is opposite with the 1st side wall 51 of outward flange 50 and can be with the 1st side wall with the axis vertical take-off of acorn nut 54 when being observed under section
Face 51 abuts against.
In addition, 56 side of the 1st hole of inward flange 60 (arrow R direction sides) inner corner portion formed with being formed at adapter body
The 2nd opposite inclined plane 64 of 1st inclined plane 52 of 12 core 14.2nd inclined plane 64 is observed under section axially
When in inward flange 60 radially inner side have the center of curvature, radius be r2 convex arch shape.In the present embodiment,
The radius r1 of 1 inclined plane 52 and the radius r2 of the 2nd inclined plane 64 are set to same size.
In addition, the 2nd side wall 61 and the 2nd inclined plane 64 of present embodiment equivalent to the present invention by bearing surface.
The 2nd side wall 61 and the 1st side wall 51 of outward flange 50 thereby, it is possible to make inward flange 60 abut against, and energy
The 2nd inclined plane 64 and the 1st inclined plane 52 of outward flange 50 for enough making inward flange 60 abut against.
(effect, effect)
Then, the application method of the pipe fitting 10 of present embodiment is illustrated.
First, pipe fitting 10 is illustrated and as the order of connection between the nipple 66 of the connecting object of side.
As shown in Figure 1, configure cricoid sealing between the outward flange 50 and nipple 66 of the core 14 of pipe fitting 10
Part 68, threadingly engages in the external screw thread 70 of nipple 66 by the internal thread 62 of acorn nut 54 and fastens acorn nut 54.
By fastening acorn nut 54, so that pipe fitting 10 is connected to nipple 66, as shown in Figure 2 A and 2 B, evagination
Edge 50 and seal 68 are clamped between inward flange 60 and nipple 66.
Thus, the 2nd side wall 61 of inward flange 60 and the 1st side wall 51 of outward flange 50 abut against, and inward flange 60
The 2nd inclined plane 64 and the 1st inclined plane 52 of outward flange 50 abut against.
In the pipe fitting 10 of present embodiment, in the 1st side wall of the outer circumferential surface due to large-diameter portion 30 and outward flange 50
51 and the corner that is formed forms the 1st inclined plane 52 of arc-shaped, therefore the masterpiece in direction intersecting axially can be suppressed
The stress concentration produced during for core 14 in above-mentioned corner.
The power in direction intersecting axially for example refers to the acorn nut 54 for carrying out other adjacent pipe fittings 10
The external force when spanner of tightening operation knocks etc., but can also be external force acted on when pitch tube P is pulled etc. its
His external force.
In addition, in order to effectively inhibit above-mentioned stress concentration, as shown in Figure 2 B, by from the outer circumferential surface of large-diameter portion 30 to outer
The height dimension along the outward flange 50 measured by radial direction untill the outer circumferential surface of flange 50 is set to H, will be similarly along footpath
When being set to h to the radial dimension of the 1st measured inclined plane 52, h is preferably set to more than the 40% of H.
In addition, in the pipe fitting 10 of present embodiment, the 2nd inclined plane 64 due to making inward flange 60 is connected to outward flange
50 the 1st inclined plane 52, and the 2nd side wall 61 of inward flange 60 is connected to the 1st side wall 51 of outward flange 50, therefore energy
Enough increase the contact area between outward flange 50 and inward flange 60.
Therefore, although in the corner of outward flange 50 formed with the 1st inclined plane 52, when fastening acorn nut 54, energy
The pushing force of inward flange 60 integrally enough is born using the sidepiece of the inward flange side of outward flange 50, pushing force will not concentrate on evagination
The part of edge 50, therefore it is able to ensure that the axial intensity of outward flange.
In the pipe fitting 10 of present embodiment, since the 1st inclined plane 52 and the 2nd inclined plane 64 have been set to simple circle
Arcuation, therefore the 1st inclined plane 52 and the 2nd inclined plane 64 are easily formed, the dimensionally stable of the 1st inclined plane 52 and the 2nd inclined plane 64
Property is also preferable, and the 1st inclined plane 52 can be made reliably to be abutted against with the 2nd inclined plane 64.
Finally, pipe fitting 10 is illustrated and as the order of connection between the pitch tube P of the connecting object of opposite side.
Pitch tube P is inserted into the insertion section 34 of adapter body 12, by the end abutment of pitch tube P in the end of large-diameter portion 30
Portion.By the way that pitch tube P is inserted into insertion section 34, so that the claw 24A of locking ring 24 expands under the action of pitch tube P,
The top ends card of claw 24A is hung on the outer circumferential surface of pitch tube P, prevents coming off for pitch tube P, and pitch tube P is reliably connected at
Pipe fitting 10.In addition, when pitch tube P is connected to adapter body 12, the O-ring seals 22 of core 14 are close to the interior of pitch tube P
Side face, it is ensured that the leakproofness between pitch tube P and core 14.
[the 2nd embodiment]
Then, the pipe fitting 10 of the 2nd embodiment of the present invention is illustrated according to Fig. 4.In addition, pair with the 1st embodiment phase
With the identical reference numeral of structure mark, and the description thereof will be omitted.
In the 1st embodiment, the 1st inclined plane 52 is in radius of the radial outside with the center of curvature in large-diameter portion 30
The concave circular arc shape of r1, but the present invention is not limited thereto or periphery as shown in Figure 4, relative to large-diameter portion 30
Face and the 1st side wall 51 are with the inclined linear inclined plane of constant angle.In this case, the 2nd of acorn nut 54 tilts
Face 64 is set to the shape that can be abutted against with the 1st inclined plane 52.
[the 3rd embodiment]
Then, the pipe fitting 10 of the 3rd embodiment of the present invention is illustrated according to Fig. 5.In addition, pair with the 1st embodiment phase
With the identical reference numeral of structure mark, and the description thereof will be omitted.
As shown in figure 5, the 1st inclined plane 52 can also be configured to include arc surface 52A and with the inclined straight line of constant angle
The inclined plane 52B of shape.In this case, be also set to can be with including arc surface 52A and inclining for the 2nd inclined plane 64 of acorn nut 54
The shape that the 1st inclined plane 52 including inclined-plane 52B abuts against.
In addition, although not shown, but the 1st inclined plane 52 is either the different multiple concave circular arc shapes of radius of curvature are connected
The different multiple linear inclined planes (being respectively constant angle) of the curve shape or angle of inclination that form be connected and
Into face.
(other embodiment)
More than, enumerate embodiment and illustrate embodiments of the present invention, but these embodiments are an examples,
Do not depart from the present invention purport in the range of can make various changes implementation.In addition, certain protection scope of the present invention is not
It is defined in these embodiments.
In the above-described embodiment, incline in the inward flange side of the outward flange 50 of core 14 formed with the 1st side wall 51 and the 1st
Inclined-plane 52, but the present invention is not limited thereto or, in the inward flange side of outward flange 50 without orthogonal to the axial direction the
1 side wall 51, inward flange side is all as the 1st inclined plane 52.In this case, the inward flange 60 of acorn nut 54 is by outward flange
Side is all set to the 2nd inclined plane 64.
In the above-described embodiment, make the radius r1 of the 1st inclined plane 52 consistent with the radius r2 of the 2nd inclined plane 64, still
As long as the 1st inclined plane 52 is in contact with the 2nd inclined plane 64 when fastening acorn nut 54, due to error in manufacture etc.,
Radius r1 can not also be completely the same with radius r2.
Description of reference numerals
10 pipe fittings；12 adapter bodies；14 cores；16 sleeves (connecting portion)；18 middle rings (connecting portion)；22O shapes seal
Enclose (connecting portion)；24 locking rings (connecting portion)；26 cores (connecting portion)；50 outward flanges；51 the 1st side walls (bearing surface)；52 the 1st
Inclined plane (bearing surface)；54 acorn nuts；56 the 1st holes；58 the 2nd holes；60 inward flanges；61 the 2nd side walls (by bearing surface)；In 62
Screw thread；64 the 2nd inclined planes (by bearing surface).
Claims (3)
1. a kind of pipe fitting, wherein, which includes：
Core, it is synthetic resin system and is formed as cylindric, and sets the core for tube body connection in length direction one end,
And the diameter large-diameter portion bigger than the diameter of the core is set in length direction the other end；
Outward flange, it is ring-type and is formed at the large-diameter portion, and is radially oriented outside extension；
Bearing surface, it is formed at the outward flange, and including the 1st inclined plane, the 1st inclined plane be arranged on the core with it is described outer
Corner between flange and the outer circumferential surface inclination under section axially during observation relative to the core；And
Acorn nut, it includes：Canister portion, it is formed with internal thread part；Inward flange, it is radially oriented interior from the end of cartridge
Side is prominent and with for the perforative hole of the core；And by bearing surface, it is abutted against with the bearing surface, this is by abutting bread
The corner for being formed at the inward flange and the 2nd inclined plane abutted against with the 1st inclined plane are included,
1st inclined plane is the concaved circular cambered surface that radius of curvature is r1, and the 2nd inclined plane is the dome arc that radius of curvature is r2
Face, and it is set as r1=r2,
The radius of curvature is that the center of curvature of the concaved circular cambered surface of r1 is located at the radial outside of the large-diameter portion, the radius of curvature
It is located at the inside of the inward flange for the center of curvature of the convex arc surface of r2.
2. pipe fitting according to claim 1, wherein,
The radial dimension h of 1st inclined plane relative to from the outer circumferential surface of the core untill the outer circumferential surface of the outward flange
The radial dimension H of the outward flange along radial direction be set to more than 40%.
3. pipe fitting according to claim 1 or 2, wherein,
The bearing surface has 1st side wall orthogonal with the outer circumferential surface of the core,
It is described that there is the 2nd side wall abutted against with the 1st side wall by bearing surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-216647 | 2013-10-17 | ||
| JP2013216647A JP5818855B2 (en) | 2013-10-17 | 2013-10-17 | Pipe fitting |
| PCT/JP2014/077620 WO2015056764A1 (en) | 2013-10-17 | 2014-10-16 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105637274A CN105637274A (en) | 2016-06-01 |
| CN105637274B true CN105637274B (en) | 2018-04-20 |
Family
ID=52828204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480057036.1A Active CN105637274B (en) | 2013-10-17 | 2014-10-16 | Pipe fitting |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5818855B2 (en) |
| CN (1) | CN105637274B (en) |
| TW (1) | TWI624612B (en) |
| WO (1) | WO2015056764A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020129212A1 (en) * | 2018-12-20 | 2020-06-25 | 三菱電機株式会社 | Pipe joint structure, and air conditioner |
| US20200200307A1 (en) * | 2018-12-21 | 2020-06-25 | Hanon Systems | Metal seal fitting with tight bend technology |
| JP2022146560A (en) * | 2021-03-22 | 2022-10-05 | 本田技研工業株式会社 | Mounting-part structure for trailing arm |
| CN113483166A (en) * | 2021-07-19 | 2021-10-08 | 伊顿液压(宁波)有限公司 | Integrally formed steel pipe with vibration-damping tensile structure and forming process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4328877A1 (en) * | 1993-08-27 | 1995-03-02 | Hummel Anton Verwaltung | Screw connection |
| CN101573550A (en) * | 2006-11-02 | 2009-11-04 | 斯瓦戈洛克公司 | Pull-up by torque fitting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59180070U (en) * | 1983-05-19 | 1984-12-01 | 株式会社クボタ | Ball valve connection structure |
| JPH0868473A (en) * | 1994-08-29 | 1996-03-12 | Sekisui Chem Co Ltd | Ball valve with cap nut and cap nut structure |
| JP2014020418A (en) * | 2012-07-13 | 2014-02-03 | Hatano Seisakusho:Kk | Piping connection tool and piping connection structure |
-
2013
- 2013-10-17 JP JP2013216647A patent/JP5818855B2/en not_active Expired - Fee Related
-
2014
- 2014-10-16 WO PCT/JP2014/077620 patent/WO2015056764A1/en active Application Filing
- 2014-10-16 CN CN201480057036.1A patent/CN105637274B/en active Active
- 2014-10-16 TW TW103135935A patent/TWI624612B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4328877A1 (en) * | 1993-08-27 | 1995-03-02 | Hummel Anton Verwaltung | Screw connection |
| CN101573550A (en) * | 2006-11-02 | 2009-11-04 | 斯瓦戈洛克公司 | Pull-up by torque fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105637274A (en) | 2016-06-01 |
| JP2015078749A (en) | 2015-04-23 |
| TWI624612B (en) | 2018-05-21 |
| TW201537078A (en) | 2015-10-01 |
| JP5818855B2 (en) | 2015-11-18 |
| WO2015056764A1 (en) | 2015-04-23 |
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