CN100406798C - Pipe joint with earthquake-proof function - Google Patents
Pipe joint with earthquake-proof function Download PDFInfo
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- CN100406798C CN100406798C CN2003801083800A CN200380108380A CN100406798C CN 100406798 C CN100406798 C CN 100406798C CN 2003801083800 A CN2003801083800 A CN 2003801083800A CN 200380108380 A CN200380108380 A CN 200380108380A CN 100406798 C CN100406798 C CN 100406798C
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- lock ring
- socket
- bellmouth
- conical surface
- pipe joint
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- 230000002093 peripheral effect Effects 0.000 claims description 58
- 238000007789 sealing Methods 0.000 claims description 30
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- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 206010061274 Malocclusion Diseases 0.000 claims 1
- 230000000694 effects Effects 0.000 description 13
- 238000002788 crimping Methods 0.000 description 7
- 238000007667 floating Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 108700041286 delta Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 244000144985 peep Species 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008717 functional decline Effects 0.000 description 1
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- 230000009916 joint effect Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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Abstract
A pipe joint with earthquake-proof function, wherein a lock ring is engaged with the storage groove of a socket, a tapered surface formed convergent toward the opening side of the socket is formed on at least either of the portion of the lock ring engaged with the storage groove and the portion of the storage groove engaged with the lock ring. When a disengagement prevention force in a pipe axial direction for preventing a spigot from being disengaged from the socket by the engagement is transmitted from the storage groove to the lock ring through the tapered surface, the line of action of the component force of the disengagement prevention force in a vertical direction to the tapered surface passes the socket opening side along the spigot outer surface of a contact point between a locking socket bottom end part and the outer periphery of the spigot.
Description
Technical field
The present invention relates to a kind of pipe joint with shatter-proof function.
Background technique
Pipe joint with earthquake-proof function has telescopicing performance and anti-drop function concurrently.
As such pipe joint, the pipe joint of known such formation, promptly, this pipe joint has the socket joint structure, insert the socket of the end that is formed at another pipe in the inside of the bellmouth of the end that is formed at a pipe that is bonded with each other, wherein, accommodate lock ring at the accepting groove in the interior week that is formed at bellmouth, be formed at the socket teat of the periphery of socket at this lock ring from the inboard hook of bellmouth, thereby bring into play shatter-proof function.This lock ring is flexibly held tightly in the periphery ground of socket and is constituted.Form the conical surface in the periphery of lock ring, be contacted with the inner periphery of accepting groove and the counter-force that produces is pressed in the periphery of socket with lock ring, given play to good shatter-proof function by this conical surface.
Pipe joint for such formation with shatter-proof function, because lock ring is hooked in the socket teat, so, need the periphery at socket not form the annular slot that embeds lock ring for the hook of this lock ring and socket, for this reason, also applicable to the thin pipe of the original thickness of pipe.Lock ring is pressed in the periphery of socket by the effect of its conical surface, so, need not use a plurality of fixing bolts separately by the pipe Zhou Fangxiang from the bellmouth outer circumferential side for the periphery that this lock ring is pressed to socket.For this reason, do not need the seal construction that uses fixing bolt used.And, in the accepting groove of lock ring being put in advance bellmouth, after the hole enlargement, socket is inserted into the installation that bellmouth can be finished lock ring, so application property increases substantially than the occasion of using fixing bolt.In addition, owing to do not need fixing bolt and its sealing mechanism, so it is bad that its construction can not take place, and can improve the reliability of construction.
Summary of the invention
The objective of the invention is to further improve ruggedized tube joint as described above.
Pipe joint with shatter-proof function of the present invention,
In the lock ring accepting groove of the inner face of the bellmouth that is formed at a pipe that constitutes the aforementioned tube joint, accommodate lock ring,
Constituting the aforementioned tube joint, be inserted in the teat that forms on the periphery of socket front end of another pipe of above-mentioned bellmouth and can be sticked in lock ring from the bellmouth inboard,
Can be sticked in the above-mentioned trough of accommodating by above-mentioned lock ring and constitute, thereby can prevent the disengagement of socket from bellmouth,
The opening side that forms relative bellmouth the either party at least of the part that engage with lock ring of above-mentioned lock ring and part accepting groove engaging and above-mentioned accepting groove becomes the conical surface of restraining shape (first The Pot ま り shape),
Be used for stoping the disengagement of the tube axial direction that socket throws off from bellmouth to stop power when accepting groove is delivered to lock ring by the conical surface by above-mentioned engaging, above-mentioned disengagement stops the line of action of component of the direction vertical with the above-mentioned conical surface of power, in the outside of socket by than the contact of the inner side surface of the bellmouth inboard of lock ring and the periphery of socket more by ground, the position formation of the opening side of bellmouth.
Therefore, according to the present invention, throw off prevention power at line of action perpendicular to the component of the direction of the conical surface, in the outside of socket by than the contact of the inner side surface of the bellmouth inboard of lock ring and the periphery of socket more by ground, the position formation of the opening side of bellmouth, thereby can be that central role is in this lock ring with above-mentioned contact with the turning power of direction that makes lock ring be forced into the periphery of socket.Like this, can prevent positively that lock ring from floating from the periphery of socket.
Description of drawings
Fig. 1 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 1.
Fig. 2 is the enlarged view of wanting portion of Fig. 1.
Fig. 3 A is the enlarged view that is shown in the lock ring of Fig. 1 and Fig. 2.
Fig. 3 B is the enlarged view of another lock ring.
Fig. 4 is the figure of function of lock ring that embodiment 1 pipe joint is shown.
Fig. 5 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 2.
Fig. 6 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 3.
Fig. 7 A is the figure of an example that the gap of lock ring and accepting groove is shown.
Fig. 7 B is the figure of another example that the gap of lock ring and accepting groove is shown.
Fig. 7 C is the figure of another example again that the gap of lock ring and accepting groove is shown.
Fig. 8 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 4.
Fig. 9 is that another of pipe joint that Fig. 8 is shown made the figure of use-case.
Figure 10 is the figure that the lock ring of the embodiment of the invention 5 is shown.
Figure 11 is the figure that the lock ring of the embodiment of the invention 6 is shown.
Figure 12 is the figure that the lock ring of the embodiment of the invention 7 is shown.
Figure 13 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 8.
Figure 14 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 9.
Figure 15 is the figure that is illustrated in the state when correctly lock ring being set in the pipe joint of Figure 14.
Figure 16 is the figure that is illustrated in the state when improperly lock ring being set in the pipe joint of Figure 14.
Figure 17 is the figure that is illustrated in the state when correctly lock ring being set in the modified example of the pipe joint with shatter-proof function of the embodiment of the invention 9.
Figure 18 is the figure that is illustrated in the state when improperly lock ring being set in this modified example.
Figure 19 is the sectional view of wanting portion of the pipe joint with shatter-proof function of the embodiment of the invention 10.
Figure 20 is the sectional view of the supporting ring of Figure 19.
Figure 21 A is the figure that makes use-case that the supporting ring of Figure 20 is shown.
Figure 21 B is that another of supporting ring that Figure 20 is shown makes the figure of use-case.
Figure 22 is the figure of modified example that embodiment 10 supporting ring is shown.
Figure 23 is the figure that makes use-case that the supporting ring of Figure 22 is shown.
Figure 24 is the figure of function example that embodiment 10 lock ring is shown.
Figure 25 is the figure that another modified example of embodiment 10 is shown.
Figure 26 is the sectional view of the supporting ring of the pipe joint with shatter-proof function of the embodiment of the invention 11.
Figure 27 A is the figure that makes use-case that the supporting ring of Figure 26 is shown.
Figure 27 B is that another of supporting ring that Figure 26 is shown makes the figure of use-case.
Figure 28 is the sectional view of the supporting ring of the pipe joint with shatter-proof function of the embodiment of the invention 12.
Figure 29 A is the figure that makes use-case that the supporting ring of Figure 28 is shown.
Figure 29 B is that another of supporting ring that Figure 28 is shown makes the figure of use-case.
Figure 30 is the sectional view of supporting ring of embodiment 12 modified example.
Figure 31 is the figure that makes use-case that the supporting ring of Figure 30 is shown.
Figure 32 is the existing sectional view of wanting portion with pipe joint of shatter-proof function.
Embodiment
(embodiment 1)
Fig. 1 illustrate based on of the present invention, have telescopicing performance and anti-drop function is the embodiment 1 of the pipe joint of shatter-proof function.
Ruggedized tube joint 1 shown in Figure 1 inserts the socket 5 of the end of the pipe 4 that is formed at the opposing party's cast iron in the inside of the bellmouth 3 of the end of the pipe 2 of the cast iron that is formed at a side.Inwards form the sealing component crimping face 6 and the lock ring accepting groove 7 of taper from the opening side of bellmouth 3 at the inner face of bellmouth 3.Accommodate the metal lock ring 20 of circumferential 1 otch at lock ring accepting groove 7.The integrally formed socket teat 9 that can be engaged to lock ring 20 of periphery at the front end 2 of socket 5 from the inboard of bellmouth 3.
Between the outer circumferential face of bellmouth 3 inner peripheral surfaces of bellmouth 3 opening side of lock ring 20 and socket 5, dispose the Sealing 11 of the rubber system of resinous supporting ring 10 and contact seal member crimping face 6.Can be contacted with the trip ring 12 and the pressure ring 13 that can be contacted with trip ring 12 of Sealing 11 in the outer circumferential face configuration of the socket 5 that is in bellmouth 3 outsides.At the through hole 14 of pressure ring 13 along a plurality of tube axial directions of circumferential formation, the a plurality of bolts 15 of tube axial direction of end that are implanted to bellmouth 3 are by through hole 14, and at this bolt screwed joint nut 16, thereby compressive seal 11 between the outer circumferential face of the sealing component crimping face 6 of bellmouth 3 and socket 5 is brought into play the desired seal function thus.
Interior week formation lining 17,17 at pipe 2,4.
When the big pulling force that produces by earthquake etc. in ruggedized tube joint 1 effect that constitutes like this, the state that is inserted into the inboard of bellmouth 3 by such socket 5 shown in the dot and dash line from figure is sticked in the scope of the state of lock ring 20 to such socket teat 9 shown in the solid line, bellmouth 3 is extracted socket 5 relatively, thereby can bring into play Telescopic.In addition, socket teat 9 is sticked in lock ring 20 from the inboard of bellmouth 3, thereby can bring into play anti-drop function.Can bring into play shatter-proof function thus.
As Fig. 2 is shown specifically, form the conical surfaces 19 in the side 18 of the bellmouth opening side of lock ring accepting groove 7, this conical surface 19 becomes the opening side convergent shape towards bellmouth 3.
In Fig. 1, pipe joint shown in Figure 2, when by the occasion at the big pulling force of tube axial direction effect such as earthquake, the disengagement from the conical surface 19 of lock ring accepting groove 7 towards the conical surface 24 effect tube axial directions of lock ring 20 stops power F.Its point of action is the end points of bellmouth opening side of the conical surface 24 of illustrated, lock ring 20.This disengagement prevention power F resolves into the component F1 of the direction vertical with the conical surface 24 (conical surface 19 of accepting groove 7) of lock ring 20 and along the component F2 of the direction of the conical surface 24 (conical surface 19) at its point of action.
At this moment, the line of action 28 of the component F1 of the direction vertical with the conical surface 24 (conical surface 19 of groove 7) of lock ring 20 is by the inner side surface 22 of lock ring 20 and interior all sides of the contact 29 of the outer circumferential face of socket 5.In other words, line of action 28 passes through more to lean on than contact 29 position of the opening side of bellmouth 3 in the outside of socket 5.
For this reason, if the conical surface 24 (conical surface 19 of the groove 7) angle of inclination of tube axial direction relatively is θ, the length of the caliber direction of the part that contacts with the conical surface 19 groove 7 the conical surface 24 (below be designated as " highly ") is f, and lock ring 20 is h from the height of the outer circumferential face of socket 5, and then the width m of lock ring 20 is
m＞(h-f)tanθ...(i)。
Like this, as described above, the line of action 28 of component F1 in the outside of socket 5 by than contact 29 more by the bellmouth opening side, like this, as shown in Figure 4, line of action 28 29 leaves apart from d in direction inwards radially from the contact.As a result, 29 effects make direction that this lock ring 20 does not float from the outer circumferential face of socket 5 promptly on the contrary lock ring 20 is pressed to the turning power T=F1d of direction of the outer circumferential face of socket 5 around the contact at lock ring 20.
Therefore, determine height h, and the height f of the conical surface 24 of width m, the lock ring 20 of lock ring 20 according to above-mentioned inequality (i), thereby can prevent positively that lock ring 20 from floating from the outer circumferential face of socket 5.
(embodiment 2)
By being suitable for as shown in Figure 5 rectangular cross section, not having the lock ring 31 of the conical surface, compare with suitable Fig. 2, as shown in Figure 3 the occasion of lock ring 20, need not carry out machining to lock ring 20 in order to remove the not part 27,27 shown in Fig. 3 A with conical surface 24,25.
In the pipe joint of such structure occasion by the big pulling force of effect tube axial directions such as earthquake, the disengagement of tube axial direction in bight that acts on the opening side side 21 of lock ring 31 from the conical surface 19 of lock ring accepting groove 7 stops power F, and the location resolution in this bight becomes the component F1 of the direction vertical with the conical surface 19 and along the component F2 of the direction of the conical surface 19.
At this moment, the line of action 28 of component F1 more leans on bellmouth opening side by the inner side surface 22 than lock ring 31 with the contact 29 of the outer circumferential face of socket 5 at the outer circumferential face of socket 5.For this reason, when the angle of inclination of the conical surface 19 relative tube axial directions of establishing accepting groove 7 is θ, lock ring 31 when the height of the outer circumferential face of socket 5 is h, the width m of lock ring 31 satisfies
m＞h·tanθ...(ii)
Ground forms lock ring 31.
Satisfy above-mentioned inequality size (ii) by like this width m of lock ring 31 and height h being formed, thus the line of action 28 that can make component F1 in the outside of socket 5 positively by than contact 29 more by the bellmouth opening side.
Like this, with same with reference to the occasion of Fig. 4 explanation, can prevent that lock ring 31 from floating from the outer circumferential face of socket 5 in the above.
(embodiment 3)
In embodiment 3 pipe joint with shatter-proof function, be suitable for the lock ring 20,31 that as shown in Figure 6 lock ring 32 replaces embodiments 1, embodiment's 2 pipe joint, the part of the conical surface that is formed at opening side side 21 24 of this lock ring 32 can enter between the outer circumferential face 5a of the inner peripheral surface 3a of bellmouth 3 and socket 5.And, do not form the conical surface in the side 18 of the bellmouth opening side of lock ring accepting groove 7.Other formation is identical with embodiment 2 pipe joint.In this occasion, lock ring accepting groove 7 can contact with the conical surface 24 of lock ring 32 at the edge part of the position of the caliber direction inboard of the side 18 of bellmouth opening side.
In the pipe joint of such structure, when occasion by the big pulling force of effect such as earthquake tube axial direction, the disengagement of tube axial direction that acts on the conical surface 24 of lock ring 32 from the position of the edge part of the caliber direction inboard of the side 18 of the bellmouth opening side of lock ring accepting groove 7 stops power F, and the location resolution in the bight becomes the component F1 of the direction vertical with the conical surface 24 and along the component F2 of the direction of the conical surface 24.
At this moment, make the line of action 28 of component F1 of the direction vertical pass through the bellmouth opening side of contact 29 at the outer circumferential face 5a of socket 5 with the conical surface 24.For this reason, if the angle of inclination of the conical surface 24 relative tube axial directions is θ, the internal diameter of bellmouth 3 is D1, and the external diameter of socket 5 is D2, when deducting height that the height of the conical surface 24 self obtains promptly the height from the outer circumferential face 5a of socket 5 to the conical surface 24 is e from the height of lock ring 32, the width m of lock ring 20 satisfies
m＞{(D1-D2)/2}tanθ
+[{D1-D2}/2}-e]cotθ...(iii)
Ground forms lock ring 32.
Satisfy above-mentioned inequality size (iii) by like this width m of lock ring 32 and the conical surface 24 being formed apart from the height e of the outer circumferential face 5a of socket 5, thus the line of action 28 that can make component F1 positively by than the contact 29 of the outer circumferential face 5a of socket 5 more by the bellmouth opening side.
Like this, identical with embodiment 1 and embodiment's 2 occasion, can prevent that lock ring 32 from floating (Fig. 4) from the outer circumferential face 5a of socket 5.
In Fig. 7 A～Fig. 7 C, the gap delta 1 of embodiment 1～embodiment 3 lock ring accepting groove 7 with the tube axial direction of lock ring 20,31,32 is shown.In these embodiments 1～3, the situation that the gap delta 1 of lock ring accepting groove 7 and lock ring 20,31,32 becomes maximum is for forming the conical surfaces 19 and also form the embodiment's 1 of the conical surface 24 occasion at lock ring 20 at lock ring accepting groove 7 like that shown in Fig. 7 A.When the gap delta 1 of lock ring accepting groove 7 and lock ring 20 was so big, it is big that the bend angle of the joint when pipe joint effect bending moment becomes.Therefore, as the performance for bending moment, embodiment 2,3 pipe joint is better than embodiment 1 pipe joint.
The pipe joint of the pipe joint of comparison diagram 7B illustrated embodiment 2 and Fig. 7 C illustrated embodiment 3 as can be known, the height of the lock ring accepting groove of Fig. 7 B 7 and the caliber direction of the contact position of lock ring 31 promptly apart from the height S1 of the outer circumferential face of socket 5 (=h) the lock ring accepting groove 7 than Fig. 7 C is big with the height S2 of the contact position of lock ring 32.Occasion is such shown in Fig. 7 B, when the contact position of lock ring accepting groove 7 and lock ring 31 when the height of the outer circumferential face of socket 5 increases, the position of the line of action 28 (Fig. 5) of component F1 is uprised, the result, line of action 28 is inboard skew from the bellmouth opening side towards bellmouth.Like this, compare, need to increase width along the lock ring 31 of tube axial direction with pipe joint shown in Fig. 7 C.On the contrary, such shown in Fig. 7 C, when the height S2 of the contact position of lock ring accepting groove 7 and lock ring 32 is low, the line of action 28 (Fig. 6) of component F1 is offset from the bellmouth inboard towards the bellmouth opening side, as a result, compare, can reduce the width of lock ring 20 with the occasion of the pipe joint of Fig. 7 B.Therefore, shown in the embodiment 1～3 in the pipe joint by the pipe joint the best shown in the embodiment 3.
In embodiment 1～3 pipe joint, from formula (i)～formula (iii) as can be known, the width by changing lock ring 20,31,32 etc. do not float lock ring 20,31,32 from the outer circumferential face of socket 5, but be not limited thereto, for example tackle at angle of inclination that also can be by changing the conical surface 24 (conical surface 19) etc.
(embodiment 4)
As Fig. 8 and as shown in Figure 9, in the part of the opening side of the bellmouth 3 of the lock ring 33 corresponding with the edge part 34 of interior all sides of the side 18 of lock ring accepting groove 7, formation can be contacted with edge part 34 and become towards the conical surface 35,36 of the opening side convergent shape of bellmouth 3.These conical surfaces 35,36, bigger near the conical surface 35 of the opening side of bellmouth 2 than the tilt angle of the conical surface 36 relative tubular axis hearts of the inboard of bellmouth 3, and the tilt angle changed in stages.
In the distance of establishing from the inner peripheral surface 3a of bellmouth 3 to the outer circumferential face 5a of socket is L, and when 29 distance was M to the contact from the edge part 34 of lock ring accepting groove 7, the tiltangle 1 of the conical surface 35 relative tubular axis hearts of forward end satisfied following formula ground and forms
M＞Ltanθ1...(iv)。
When being the conical surface 35 of tiltangle 1, press axial width m{=[M+ (L-e) the cot θ 1 of lock ring 33] (e is the height of the vertical component effect of the part that forms the conical surface 35) with the relation of θ 1 and L, can have the point that satisfies following formula
M＝Ltanθ1...(v)。
Therefore, be the border with this point, satisfy
Ltan θ 1＞Ltan θ 2 and M＞Ltan θ 2
The tiltangle 2 of another conical surface 36 is set on ground.
Promptly, for the conical surface 35,36, the internal diameter of establishing bellmouth 3 be distance L when being D2 of the external diameter of D1, socket 5=(D1-D2)/the less occasion of 2}, as shown in Figure 8, the steep anxious conical surface 35 in tilt angle is contacted with edge part 34, simultaneously, and in the big occasion of distance L, as shown in Figure 9, the mild conical surface 36 in tilt angle is contacted with edge part 34.Like this, the little occasion of distance L not only, and the big occasion of distance L, the opening side of bellmouth 3 is more leaned in the contact 29 of the outer circumferential face 5a that the disengagement prevention power line of action 28 with the component F1 conical surface 35,36 rectangular directions F is socket 5 by the interior all sides than contact 29.
When being such formation, no matter the size from the inner peripheral surface 3a of bellmouth 3 to the distance L of the outer circumferential face 5a of socket 5 how, the line of action 28 of component F1 all certain by than the contact 29 of the outer circumferential face 5a of socket 5 more by the bellmouth opening side.Like this, promptly be pressed to the turning power T=F1d of direction of the outer circumferential face 5a of socket 5 on the contrary in lock ring 33 direction that 29 effects are not floated from the outer circumferential face 5a of socket 5 around the contact.
As described above, according to above-mentioned inequality (iv), adjust tiltangle 1, θ 2 corresponding to the distance L of the outer circumferential face 5a of the inner peripheral surface 3a of bellmouth 3 and socket 5, thereby can form the little lock ring 33 of width m of tube axial direction.
(embodiment 5)
In this embodiment, as shown in Figure 10, the conical surface 35,36,37 of lock ring 33 is changed by three grades.When being such formation, can make the variable quantity of tiltangle 1, θ 2, θ 3 of the conical surface 35,36,37 few, and form multistage, so the variation that is suitable for the L value is the big occasion of tolerance.
(embodiment 6)
In this embodiment, as shown in Figure 11, make the variation of the incline section of lock ring 33 form curved surface 38 more meticulously.Curved surface 38, also can be formed by quadratic curve etc. except simple circular curve at its cross section.θ 1 is the angle of inclination of the beginning portion of the bellmouth opening side that is positioned at curved surface 38.
In this occasion, the relatively variation of L value, what can obtain the generation of careful anticreep power and lock ring falls down to prevent effect.
(embodiment 7)
In this embodiment, as shown in Figure 12, the face 39 of the incline section of lock ring 33 is its cross section being combined to form by straight line 40 and curve 41.θ 1 is the tilt angle of the part of straight line 40.
In this occasion, also relatively the variation of L value obtain the generation of careful anticreep power and lock ring fall down to prevent effect.
(embodiment 8)
In the present embodiment, as shown in Figure 13, lock ring 33 is identical with the lock ring of Fig. 9, but forms the conical surface 19 at lock ring accepting groove 7.In addition, in this embodiment, the tilt angle of the conical surface 35,36 of lock ring 33 is different with the tilt angle of the conical surface 19 of lock ring accepting groove 7, and for this reason, the inner periphery portion 42 of the conical surface 19 is contacted with the conical surface 35 of lock ring 33.
(embodiment 9)
Figure 14 illustrates the pipe joint with shatter-proof function 1 of the embodiment of the invention 9.Here, same with the embodiment 1～8 of front, insert the socket 5 of the end that is formed at another pipe 4 in the inside of the bellmouth 3 that is formed at a pipe end of 2.Symbol 6 is a Sealing crimping face, and symbol 7 is the lock ring accepting groove.Between the outer circumferential face of sealing component crimping face 6 and socket 5, dispose Sealing 11, accommodate the metal lock ring 45 of circumferential 1 otch at lock ring accepting groove 7.Symbol 9 is the socket teat.Embedding pressure ring 13 outside the part of the socket 5 in the outside of bellmouth 3 forms flange 8 in the end of bellmouth 3.By connecting T bolt 46 and the nut 47 of flange 8 pressure ring 13 is connected to flange 8 with a plurality of tube axial directions pressure ring 13, pipe Zhou Fangxiang, thereby by pressure ring 13 Sealing 11 is pressed to the outer circumferential face of crimping face 6 and socket 5, realizes the desired seal function thus.
The side of the opening side of the bellmouth 3 of lock ring accepting groove 7 forms the conical surface 48 from the groove edge to bottom land.Form the conical surface 24 that can contact at lock ring 45 with the conical surface 48 of lock ring accepting groove 7.
In this pipe joint 1, lock ring 45 and as follows to the relation of the sectional shape of its accepting groove of accommodating 7.That is, make the conical surface 48,24 opposed facing occasions, can as shown in Figure 15 lock ring 45 accommodated the bottom side of accepting groove 7, remaining the hole enlargement state.As a result, as socket 5 is inserted into bellmouth 3, then socket teat 9 can pass through the position of this lock ring 45 towards the inboard of bellmouth 3 when connector engages.And in the occasion that lock ring 45 is set towards the conical surface 48, the 24 mutual opposite directions of not facing as shown in Figure 16, when will be to lock ring 45 hole enlargements, such as shown in the figure, the conical surface 48 of accepting groove 7 contacts with the edge part 50 of the non-conical surface side of lock ring 45, and lock ring 45 hole enlargements are accommodated to the bottom side of accepting groove 7.For this reason, inside side extrudes the interior perimembranous of lock ring 45 towards the footpath from accepting groove 7, and such as shown, when inserting socket 5, socket teat 9 is hooked into this part of extruding, and socket 5 can not be inserted in the bellmouth 1.
In detail, as shown in Figure 15, the width of tube axial direction of establishing the inner peripheral surface 51 of lock ring 3 is t, and the width of the tube axial direction of the outer circumferential face 52 of lock ring 3 is t
0, the height of lock ring 3 is H, and the A/F of accepting groove 7 is T, and the width of the tube axial direction of the bottom surface of accepting groove 7 is T
0, the tilt angle of the conical surface 19 relative tubular axis hearts is θ 5, and the degree of depth of accepting groove 7 is V, and the height of socket teat 9 is h2, and the gap of the outside of the inner face of bellmouth 3 and socket 5 is of a size of L.At this moment, such as shown, if under making the conical surface 48,24 opposed facing states lock ring 45 is contained in the groove 7, then socket teat 9 can be by the interior week of lock ring 45, so the condition of this moment becomes when socket 5 is inserted into bellmouth 3
L+V＞H+h2...(vi)。
When socket 5 will be used to make the lock ring 45 and the condition of socket teat 9 hooks to become when bellmouth 3 is deviate from
H＞L...(vii)。
The condition of accommodating the bottom in the accepting groove 7 when lock ring 45 hole enlargements is
t
0＜T
0...(viii)。
On the other hand, as shown in Figure 16, when mistake was arranged at opposite direction with lock ring 3, even lock ring 45 is carried out hole enlargement, because edge part 50 is contacted with the conical surface 48 of accepting groove 7, lock ring 45 can not enter into the bottom of accepting groove 7 fully.As a result, when socket 5 was inserted into bellmouth 3, socket teat 9 was hindered by lock ring 45, can not pass through this position.Be used to stop the condition of passing through of this lock ring 45 to be
t＞T
0...(ix)。
As establish socket teat 9 be contacted with lock ring 45 and stop its by the time, the gap of the bottom surface of the outer circumferential face of lock ring 45 and accepting groove 7 is y, then following relation is set up
y＝(t-T
0)tanθ5...(x)。
Because lock ring 45 is hooked into socket teat 9, hinder socket 5 further to insert to the inside of bellmouth 3, so,
(L+V)-(y+H)＜h
That is,
(L+V)-(t-T
0)tanθ5-H＜h...(xi)
Such relation is set up.
Therefore, be inserted in the occasion of accepting groove 7 at lock ring 45, when being arranged at correct direction, as shown in Figure 14, lock ring 45 by 49 hole enlargements of hole enlargement holder state under correctly be contained in the inside of accepting groove 7, socket teat 9 can positively more enter into the interior side of bellmouth 3 as shown in Figure 15 than accepting groove 7.Yet in the occasion that oppositely is provided with as shown in Figure 16, the conical surface 48 of accepting groove 7 contacts with the edge part 50 of lock ring 45, and lock ring 45 can not enter in the accepting groove 7 fully.As a result, socket teat 9 can not be by the inboard of lock ring 45, and socket 5 can not be inserted into the precalculated position of bellmouth 3 inside.
Like this, can prevent positively that mistake from connecting.
About the tolerance of size of pipe,, can consider that also the lock ring 45 that oppositely is provided with enters into the occasion of the inside of accepting groove 7 even be formation as described above.In the occasion that has such size relationship, size H shown in Figure 16 is bigger, and this lock ring 45 increases from the overhang of bellmouth 3 inner peripheral surfaces during as reverse insertion lock ring 45, can make more positively that then socket teat 9 does not pass through.
In this occasion, also can form other conical surface 53 that links to each other with the conical surface 24 as shown in Figure 17, obtain height H
1When forming the conical surface 53 like this, as shown in Figure 18, according to height H
1Make the edge part of bellmouth 3 be hooked in the conical surface 48 of accepting groove 7, simultaneously, the inner periphery portion 54 of the side of the dorsal part of lock ring accepting groove 7 is hooked in the conical surface 24 of lock ring 45, so, can prevent positively that the mistake of socket 5 from connecting.
(embodiment 10)
In this embodiment 10, though identical with embodiment 9 occasion, the internal diameter of the lock ring 45 of nature and the external diameter of socket 5 are identically formed.
Here, as shown in Figure 19, compare difference with embodiment 9 and be, the shape of cross section of accepting groove 7 is a rectangle, and this accepting groove 7 does not have the conical surface.The inner peripheral surface that tube axial direction is set in interior week 56 of the bellmouth 3 between sealing component crimping face 6 and lock ring accepting groove 7.Between the outer circumferential face 5a of the inner peripheral surface 56 of the bellmouth 3 between Sealing 11 and the lock ring 45 and socket 5 by holding the supporting ring 57 that the rubber system harder than Sealing 11 is set in the state of the outer circumferential face 5a of socket 5 tightly.
This supporting ring 57 as Figure 19 and as shown in Figure 20 one have minor diameter 58 and large-diameter portion 59; These minor diameter 58 configurable interior all sides ground in inner peripheral surface 56 form, this large-diameter portion 59 forms greatlyyer than the diameter of this minor diameter 58, thereby can prevent that the Sealing 11 that is compressed between the bellmouth socket from entering into the gap c of this inner peripheral surface 56 and minor diameter 58.In detail, as shown in Figure 20, form highlightedly from the outer Zhou Dynasty of caliber direction foreign side as the bellmouth opening side of the minor diameter 58 of main body portion as the large-diameter portion 59 of protuberance.The end face 60 of the bellmouth inboard of supporting ring 57 is formed at the caliber direction, can contact with the end face 61 of the bellmouth opening side of lock ring 45.
The maximal clearance Lmax of inner peripheral surface 56 during for minimum admissible dimension and the outer circumferential face 5a of socket 5 forms height h3 from the inner peripheral surface of supporting ring 45 to the caliber direction of the maximum outside diameter portion of large-diameter portion 59 slightly bigly for maximum admissible dimension and socket 5 than bellmouth 3.Inner peripheral surface 56 when the height h4 of minor diameter 58 for example forms with bellmouth 3 to minimum admissible dimension and socket 5 to maximum admissible dimension and the same size of minimum clearance Lmin of the outer circumferential face 5a of socket 5.
In such formation, when bellmouth 3 engages with socket 5, in lock ring 45 is contained in the bellmouth 3 of state of lock ring accepting groove 7, will be in supporting ring 18, Sealing 11, and pressure ring 13 socket 5 that is disposed at the state of periphery be inserted into preposition.By T bolt 46 and nut 47 pressure ring 13 is connected in flange 8.
At this moment, such shown in Figure 21 A, even inner peripheral surface 56 is maximal clearance Lmax with the gap of the outer circumferential face 5a of socket 5, the height h3 of the large-diameter portion 59 of supporting ring 57 also forms greatlyyer than maximal clearance Lmax as shown in Figure 20, so this large-diameter portion 59 can be crimped on inner peripheral surface 56 by resiliently deformable.Therefore, the part of maximal clearance Lmax can not take place with gap supporting ring 57 to be disposed at along its full week between large-diameter portion 59 and inner peripheral surface 56.Like this, can prevent that positively the soft top portion (バ Le Block portion) 62 of front end of the Sealing 11 of compressive state from entering into the gap c of inner peripheral surface 56 and minor diameter 58, positively prevents the decline of the sealing function between the bellmouth socket that takes place because the compressive state of top portion 62 relaxes by large-diameter portion 59.
In addition, such shown in Figure 21 B, even inner peripheral surface 56 is minimum clearance Lmin with the gap of the outer circumferential face 5a of socket 5, the large-diameter portion 59 of the supporting ring 57 of vulcanite system also can be contacted with inner peripheral surface 56 distortion, so, can between supporting ring 57 and inner peripheral surface 56, not take place with gap supporting ring 57 to be disposed at minimum clearance Lmin along its full week.Can prevent that positively top portion 62 from entering into the gap of inner peripheral surface 56 and minor diameter 58, positively prevents the decline of the sealing function between the bellmouth socket by large-diameter portion 18b like this, equally.
Equally, even the gap L of the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the size arbitrarily between Lmin～Lmax, can prevent positively that also inner peripheral surface 56 and supporting ring 57 from being between its large-diameter portion 59 gap to take place.
In Figure 19～Figure 21 B, the large-diameter portion 59 of supporting ring 57 forms highlightedly from a position of the periphery of the bellmouth opening side of minor diameter 58 towards foreign side radially, but large-diameter portion 59 also can be from a plurality of positions of the periphery of the bellmouth opening side of minor diameter 58, for example as shown in Figure 22, form highlightedly from 2 positions of the periphery of the bellmouth opening side of minor diameter 58 towards foreign side radially.Use such supporting ring 57 pipe joint cross-sectional configuration as shown in figure 23.
Like this, can prevent more reliably that the soft top portion 62 of front end of the Sealing 11 of compressive state from entering into the gap c of inner peripheral surface 56 and minor diameter 58.
The occasion of power is deviate from effect between to the bellmouth socket, such as shown in figure 24, the conical surface 24 of lock ring 45 is contacted with the inner periphery portion (identical with occasion shown in Figure 3) of the side 18 of accepting groove 7, but at this moment, the part of the bellmouth opening side of lock ring 45 can enter into the gap of the outer circumferential face 5a of inner peripheral surface 56 and socket 5, can stop up this gap along full week by lock ring 17.In addition, also can be such as shown in figure 25, the rubber ring 63 of configuration centering usefulness between the bottom of the periphery of lock ring 45 and accepting groove 7, this rubber ring 63 are in socket 5 is inserted into bellmouth 3 time, and 5 pairs of lock rings 45 of bellmouth 3 and socket are felt relieved relatively.
(embodiment 11)
In detail, supporting ring 65 as the large-diameter portion 59 of protuberance from as outer Zhou Dynasty of the bellmouth opening side of the minor diameter 58 of main part radially foreign side form highlightedly.In the end of the bellmouth opening side of supporting ring 19 along the recess 66 that forms in full week towards bellmouth opening side opening as wall thickness reduction portion (meat is stolen body portion).
The gap that Figure 27 A illustrates the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the occasion of maximal clearance Lmax.The height h3 of the large-diameter portion 59 of the supporting ring 19 of this occasion forms than the bigger ground of maximal clearance Lmax based on tolerance of size, so, can along its full week the gap take place between large-diameter portion 59 and inner peripheral surface 56.
The gap that Figure 27 B illustrates the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the occasion of minimum clearance Lmim.In this occasion, the large-diameter portion 59 of the supporting ring 65 of vulcanite system can be pushed on inner peripheral surface 56 and be out of shape, and is such as shown in the figure at this moment, and along with the distortion of large-diameter portion 59, recess 66 is radially flattened by court, thereby can easily make this large-diameter portion 59 distortion.
As known from the above, even the gap of the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the value arbitrarily between Lmin～Lmax, distortion when being contacted with inner peripheral surface 56 by the large-diameter portion 59 that makes supporting ring 65, thus can prevent positively that at inner peripheral surface 56 and supporting ring 65 be between its large-diameter portion 59 gap to take place.
At this moment, though for example supporting ring 65 further effect towards the pushing force of the inboard of bellmouth 3 because the compressive state of the top portion 62 of Sealing 11 can invalidly do not relaxed, so, can prevent really that the sealing function between the bellmouth socket from descending.
(embodiment 12)
Embodiment 12 pipe joint changes the supporting ring 57,65 of embodiment 10,11 pipe joint into supporting ring 67 shown in Figure 28.The formation of other parts is identical with embodiment 10,11 pipe joint.
In detail, supporting ring 67 is such as shown in figure 28, in the periphery from the end to end of its axis direction, forms from large-diameter portion 59 towards minor diameter the 58 swedged gradually conical surfaces 68.
The gap that Figure 29 A illustrates the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the occasion of maximal clearance Lmax.In this occasion, the height h3 of the large-diameter portion 59 of supporting ring 67 forms than the bigger ground of maximal clearance Lmax based on tolerance of size, so, can make between large-diameter portion 59 and inner peripheral surface 56, not produce the gap along its full week.
The gap that Figure 29 B illustrates the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the occasion of minimum clearance Lmin.In this occasion, the conical surface 68 of the supporting ring 67 of the rubber system by making hard is crimped on inner peripheral surface 56, thereby can make this supporting ring 67 distortion.Therefore, can make and along its full week the gap does not take place 67 of inner peripheral surface 56 and supporting rings.
As known from the above, even the gap of the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the value arbitrarily between Lmin～Lmax, can prevent positively that also at inner peripheral surface 56 and supporting ring 67 be between its conical surface 68 gap to take place.
As embodiment 12 modified example, the end of also applicable bellmouth opening side at supporting ring 67 shown in Figure 28 forms other supporting ring 70 of recess 69 as shown in figure 30 like that along full week, and this recess is towards bellmouth opening side opening, as wall thickness reduction portion.
In this occasion, same with embodiment 11 occasion, radially flatten recess 69 by court, thereby can easily make the large-diameter portion 59 sides distortion of supporting ring 70.Figure 31 is illustrated in the occasion of the gap of inner peripheral surface in the pipe joint that uses supporting ring 70 56 and the outer circumferential face 5a of socket 5 as maximal clearance Lmax.
(about embodiment 10～12 test example)
Figure 32 illustrates the structure of pipe joint of prior art of relative embodiment's 10～12 pipe joint.Wherein, supporting ring 72 becomes simple rectangular cross section ground and forms, and its thickness equates with minimum clearance Lmin, is that the occasion of minimum clearance Lmin also can dispose no problemly with the gap at the outer circumferential face 5a of inner peripheral surface 56 and socket 5.The gap that Figure 32 illustrates the outer circumferential face 5a of inner peripheral surface 56 and socket 5 is the occasion of maximal clearance Lmax, but in this occasion, produces gap c radially between inner peripheral surface 56 and supporting ring 72., in diagram constitutes, the mechanism of not stopping up this gap c, for this reason, the top portion 62 of Sealing 11 enters into this gap c, and the compressive state of top portion 62 is lax, has the danger of the sealing function decline that makes between the bellmouth socket thus.
In this pipe joint shown in Figure 32, whether the top portion 62 that is used to observe the Sealing 11 of compressive state enters into the tube wall ground formation that inner peripheral surface 56 and the peep hole 73 of the gap c of supporting ring 72 radially connect bellmouth 3.
In the test of following explanation, if cross section as shown in Figure 32 be rectangle supporting ring 72 be shaped as A, supporting ring 57 shown in Figure 20 be shaped as B, supporting ring 57 shown in Figure 22 be shaped as C, supporting ring 65 shown in Figure 26 be shaped as D, supporting ring 67 shown in Figure 28 be shaped as E, supporting ring 70 shown in Figure 30 be shaped as F.Then, carry out following test 1～3.
At first, as test 1, the pipe joint that uses pipe joint shown in Figure 32 and form by breakthrough status with the same peep hole of pipe joint shown in Figure 32, when the gap of the inner peripheral surface 56 of bellmouth 3 and the outer circumferential face 5a of socket 5 was maximal clearance Lmax, whether the top portion 62 of the Sealing 11 of test compressive state entered into the inner peripheral surface 56 of bellmouth 3 and the gap c of supporting ring 72,57,57,65,67,70.
Then, as test 2, when the gap of the inner peripheral surface 56 of bellmouth 3 and the outer circumferential face 5a of socket 5 was minimum clearance Lmin, whether test successfully was configured to this gap with supporting ring 72,57,57,65,67,70 when bellmouth 3 engages with socket 5.
Then, as test 3, when the gap of the inner peripheral surface 56 of bellmouth 3 and the outer circumferential face 5a of socket 5 is maximal clearance Lmax, apply predetermined test hydraulic pressure in the pipe of joint, whether test finds the leakage of water at this joint.
The cost of having concluded the result of above test 1～3 in the table 1 and having established the supporting ring 72 of shape A is the cost of supporting ring 72,57,57,65,67,70 of each shape A～F of 100 o'clock.
| Shape | Test 1 | |
|
Cost |
| A | Enter | Can dispose smoothly | Find to leak | 100 |
| B | Do not enter | Can dispose smoothly | Do not find to leak | 126 |
| C | Do not enter | Can dispose smoothly | Do not find to leak | 126 |
| D | Do not enter | Can dispose smoothly | Do not find to leak | 116 |
| E | Do not enter | Can not dispose smoothly | Do not find to leak | 117 |
| F | Do not enter | Can dispose smoothly | Do not find to leak | 117 |
By above result as can be known, from aspect of performance and cost aspect, the occasion of the supporting ring 65,70 of use shape D and shape F is the most suitable.About the supporting ring 65,70 of this shape D and shape F, also under the such special conditions of contract of following condition 1～3, carry out above-mentioned test 1 and test 3 once more.
At first, as condition 1, to in circumferential a plurality of T bolts 46, towards half of substantially horizontal when pipe configuration, for example manage the T bolt 46 of top half cycle side, torque screwed joint nut 47 in accordance with regulations, and at the bottom of second half pipe the T bolt 46 screwed joint nut 47 not of half cycle side, carry out so-called one-sided connection, at the circumferential generation of Sealing 11 position and unpressed position by the force compresses of regulation.
As condition 2, increase 20% superfluous torque tightening nut 47 for circumferential a plurality of T bolts 46 whole torques in accordance with regulations.
As condition 3, by allowing that bend angle to greatest extent carries out engaging of bellmouth 3 and socket 5.
Test 1 and test 3 under the special conditions of contract of condition 1～3, have been carried out once more, occasion at the supporting ring 65,70 that uses shape D and shape F, the top portion 62 of the Sealing 11 of two occasion lower compression states does not all enter into the gap of inner peripheral surface 56 with the supporting ring 65,70 of bellmouth 3, and does not find the leakage of water.
Claims (11)
1. pipe joint with shatter-proof function,
In the lock ring accepting groove that the inner face of the bellmouth of a pipe that constitutes described pipe joint forms, accommodate lock ring,
Constituting described pipe joint, be inserted into the teat that forms on the periphery of socket front end of another pipe of described bellmouth and constitute and can be sticked in lock ring from the bellmouth inboard,
Described lock ring constitutes and can be sticked in described accepting groove, can prevent that thus socket from throwing off from bellmouth,
The either party at least of the part that engages with lock ring of the part that engages with accepting groove of described lock ring and described accepting groove, the opening side that forms relative bellmouth becomes the conical surface of convergence shape,
Be used for stoping the disengagement of the tube axial direction that socket throws off from bellmouth to stop power when accepting groove is delivered to lock ring by the conical surface by described engaging, the line of action of the component of the direction vertical of described disengagement prevention power with the described conical surface, in the outside of socket by than the contact of the inner side surface of the bellmouth inboard of lock ring and the periphery of socket more by ground, the position formation of the opening side of bellmouth
It is characterized in that at the part that engages with the accepting groove formation conical surface of lock ring, the tilt angle of the relative socket of this conical surface outside constitutes corresponding to the radial distance from the socket outside to the part of described engaging with changing.
2. the pipe joint with shatter-proof function according to claim 1 is characterized in that, along with the radial distance from the socket outside to the part that engages with accepting groove increases, the tilt angle of the relative socket of conical surface outside diminishingly constitutes.
3. the pipe joint with shatter-proof function according to claim 2 is characterized in that, the tilt angle classification of the relative socket of conical surface outside constitutes with reducing.
4. the pipe joint with shatter-proof function according to claim 2 is characterized in that, the conical surface is the stepless smooth flexure plane that reduces in tilt angle of relative socket outside.
5. the pipe joint with shatter-proof function according to claim 2 is characterized in that, the conical surface is the combination by the smooth flexure plane of the plane of inclination of the straight line shape cross section of changed in stages and stepless variation.
6. the pipe joint with shatter-proof function according to claim 1 is characterized in that,
Form the conical surface lock ring with the part both sides that engage with lock ring of snap portions accepting groove and accepting groove,
When the state of not facing mutually with the described conical surface is contained in accepting groove with lock ring, the conical surface of accepting groove contacts with the conical surface of lock ring periphery in addition, lock ring can not be accommodated the bottom side of accepting groove, inside side extrudes towards the footpath from accepting groove to make lock ring thus, in the insertion part of socket in bellmouth, the socket teat touches the described part of extruding, and socket can not be inserted into to hold intra-orally and constitute.
7. the pipe joint with shatter-proof function according to claim 1 is characterized in that,
Between the bellmouth of the bellmouth opening side of lock ring and socket with compressive state configuration Sealing,
Between the outer circumferential face of the inner peripheral surface of the bellmouth between Sealing and the lock ring and socket, dispose and hold tightly in the supporting ring of the outer circumferential face of socket,
This supporting ring has minor diameter and large-diameter portion, the configurable internal side diameter ground that arrives the described inner peripheral surface of bellmouth of this minor diameter forms, this large-diameter portion forms greatlyyer than the diameter of this minor diameter, can prevent that the Sealing of described compressive state from entering into the described inner peripheral surface of bellmouth and the gap of described minor diameter.
8. the pipe joint with shatter-proof function according to claim 7, it is characterized in that, the maximum outside diameter of large-diameter portion forms greatlyyer than the internal diameter of the inner peripheral surface of bellmouth, when supporting ring is configured to the corresponding position of inner peripheral surface with bellmouth, described large-diameter portion form to such an extent that be crimped on described inner peripheral surface than the big part of internal diameter of the inner peripheral surface of bellmouth.
9. the pipe joint with shatter-proof function according to claim 8 is characterized in that, forms wall thickness reduction portion on supporting ring, and this wall thickness reduction portion is used for making the large-diameter portion distortion when this supporting ring is configured to the corresponding position of inner peripheral surface with bellmouth.
10. the pipe joint with shatter-proof function according to claim 8 is characterized in that: supporting ring has main part that constitutes minor diameter and the protuberance that forms, constitutes large-diameter portion from this main part towards caliber direction foreign side highlightedly.
11. the pipe joint with shatter-proof function according to claim 8 is characterized in that: supporting ring forms taper from the large-diameter portion to the minor diameter.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003000742A JP4286004B2 (en) | 2003-01-07 | 2003-01-07 | Pipe joint structure |
| JP742/2003 | 2003-01-07 | ||
| JP19594/2003 | 2003-01-29 | ||
| JP373851/2003 | 2003-11-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1735765A CN1735765A (en) | 2006-02-15 |
| CN100406798C true CN100406798C (en) | 2008-07-30 |
Family
ID=32818942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2003801083800A Expired - Lifetime CN100406798C (en) | 2003-01-07 | 2003-12-22 | Pipe joint with earthquake-proof function |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4286004B2 (en) |
| CN (1) | CN100406798C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2930029B1 (en) * | 2008-04-11 | 2010-06-11 | Anvis Sd France S A S | METHOD AND DEVICE FOR MONITORING THE CORRECT OPERATION OF A HYDRO ELASTIC BLADE, BEARING OR JOINT. |
| KR101488752B1 (en) | 2009-01-27 | 2015-02-03 | 가부시끼 가이샤 구보다 | Pipe joint and pipe connecting apparatus |
| JP2011085162A (en) * | 2009-10-14 | 2011-04-28 | Kubota Corp | Pipe joint |
| KR101059014B1 (en) * | 2010-10-15 | 2011-08-23 | 송현웅 | Pipe fitting for absorbing expansion and earthquake-proof |
| CN106870850A (en) * | 2017-04-16 | 2017-06-20 | 北京工业大学 | A kind of socket type pipeline antidetonation interface |
| CN107826137A (en) * | 2017-10-31 | 2018-03-23 | 长春中车轨道车辆有限公司 | Anti- dewatering and drainage guide |
| CN109131404B (en) * | 2018-09-28 | 2024-02-27 | 镇江市博德电气设备有限公司 | Electric heating drainage guide cylinder convenient for assembly drainage |
| US20220205568A1 (en) * | 2019-06-20 | 2022-06-30 | Waterworks Technology Development Organization Co., Ltd. | Disengagement Prevention Structure for Pipe Connecting Portion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062791A (en) * | 1992-06-16 | 1994-01-11 | Kubota Corp | Slip-off preventing pipe coupling |
| JPH0673585U (en) * | 1993-03-31 | 1994-10-18 | 株式会社クボタ | Detachment prevention fitting |
| JP2002005361A (en) * | 2000-06-27 | 2002-01-09 | Kubota Corp | Detachment preventive pipe coupling |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55123080A (en) * | 1979-03-14 | 1980-09-22 | Kubota Ltd | Earthquakeeproof pipe joint |
| JP2683285B2 (en) * | 1989-10-13 | 1997-11-26 | 日本鋳鉄管株式会社 | Pipe fitting structure |
| JPH09133219A (en) * | 1995-11-09 | 1997-05-20 | Nok Corp | Sealing device |
| JP2002276814A (en) * | 2001-03-16 | 2002-09-25 | Nok Corp | Sealing device |
-
2003
- 2003-01-07 JP JP2003000742A patent/JP4286004B2/en not_active Expired - Lifetime
- 2003-12-22 CN CN2003801083800A patent/CN100406798C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062791A (en) * | 1992-06-16 | 1994-01-11 | Kubota Corp | Slip-off preventing pipe coupling |
| JPH0673585U (en) * | 1993-03-31 | 1994-10-18 | 株式会社クボタ | Detachment prevention fitting |
| JP2002005361A (en) * | 2000-06-27 | 2002-01-09 | Kubota Corp | Detachment preventive pipe coupling |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004211831A (en) | 2004-07-29 |
| CN1735765A (en) | 2006-02-15 |
| JP4286004B2 (en) | 2009-06-24 |
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Granted publication date: 20080730 |