JP2011179632A - Pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joint which can be assembled and connected without mistakes. <P>SOLUTION: A rib 50 is formed linearly in the axial direction of a connecting part 16 on the outer peripheral part 16A of the connecting part 16 in a joint body 12 of the pipe joint 10, and the rib 50 reaches the vicinity of a cap in the connecting part 16 from a bent part 12A of the joint body 12. On the other hand, a rib is not formed on the outer peripheral part of a connecting part 14 having a larger diameter than the connecting part 16. Then, a worker discriminates between the size of the diameter of the connecting part 14 and the size of the diameter of the connecting part 16 from the rib 50, so that pipes 24, 40 having corresponding diameters can be connected to the connecting parts 14, 16, and in assembling the pipe joint 10, parts (a water stop ring 30, an outer cylinder 32, a pipe holding ring 34, a cap 36, a release ring 38 and the like) not corresponding to the diameters of the connecting parts 14, 16 are not assembled by mistake. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pipe joint in which a plurality of connecting portions to which pipe bodies are connected are integrally formed.

  In recent years, pipes for water supply and hot water supply have been widely used even in detached houses such as apartment houses. Usually, main pipes are collected in the header section, and branch pipes are connected to the necessary parts via pipe joints. It is supposed to be. Moreover, as a pipe joint to be used, a structure in which a plurality of connecting portions to which pipe bodies are connected is integrally formed is known (for example, see Patent Document 1).

JP 2005-133754 A

  However, when the diameters of the pipes connected to the respective connecting parts are different and the difference in diameter is small, there is a risk of connecting the pipes whose diameters do not match the respective connecting parts at the time of construction. Further, when assembling the pipe joint, there is a risk that parts having similar dimensions may be mistakenly assembled.

  The present invention has been made to solve the above problems, and an object thereof is to obtain a pipe joint that can be assembled and connected without making a mistake.

  The pipe joint of the invention according to claim 1 is formed in a joint body integrally formed with a plurality of connecting parts to which pipe bodies having different diameters are connected, and an outer peripheral part of the connecting part of the joint body, And a rib corresponding to the size relationship of the diameters of the plurality of connecting portions.

  In the pipe joint according to claim 1, the diameters of the plurality of connection portions are formed on the outer peripheral portion of the connection portion of the joint body integrally formed with the plurality of connection portions having different diameters to which the pipe bodies having different diameters are connected. Ribs corresponding to the magnitude relationship are formed. For this reason, the operator can discriminate | determine whether the diameter of a connection part and the diameter of the components connected to a connection part, or a pipe body match with a rib at the time of an assembly or construction. As a result, assembly and connection can be performed without mistakes.

  According to a second aspect of the present invention, in the pipe joint according to the first aspect, the rib has the same height as the outer peripheral portion of the cap attached to the outer peripheral portion of the connecting portion.

  In the pipe joint according to claim 2, in the pipe joint according to claim 1, the rib has the same height as the outer peripheral part of the cap attached to the outer peripheral part of the connecting part. For this reason, in addition to the outer peripheral portion of the cap, the outer peripheral portion of the rib is grounded, thereby increasing the number of contact points. As a result, it is possible to reinforce the joint body against a load from above due to stepping. Also, the ribs are too big to get in the way.

  The pipe joint according to claim 3 is the pipe joint according to claim 1 or 2, wherein the outer peripheral part shape of the rib is the same shape as the outer peripheral part shape of the cap attached to the outer peripheral part of the connecting part. It is characterized by becoming.

  In the pipe joint according to claim 3, since the outer peripheral part shape of the rib is the same shape as the outer peripheral part shape of the cap attached to the outer peripheral part of the connecting part, when changing the angle while the joint body is grounded, The ribs do not get in the way and you can change the angle freely.

  The pipe joint according to claim 4 is the pipe joint according to any one of claims 1 to 3, wherein the joint body has two or more connecting portions, and the width of the rib is a large diameter. It is narrowing from the part side toward the connecting part having a small diameter.

  In the pipe joint according to claim 4, the joint body has two or more connecting portions, and the rib width is narrowed from the connecting portion having a large diameter toward the connecting portion having a small diameter. By changing the width, the operator can determine the size of the diameter of the connecting portion.

  The pipe joint according to claim 5 is the pipe joint according to any one of claims 1 to 4, wherein the joint body has two or more connecting portions, and the rib has a large diameter. It is characterized in that the diameter decreases from the connecting part side toward the connecting part having a small diameter.

  In the pipe joint according to claim 5, the joint body has two or more connecting portions, and the height of the rib is lowered from the connecting portion having a large diameter toward the connecting portion having a small diameter. By changing the height of the rib, the operator can determine whether the diameter of the connecting portion is large or small.

  As described above, the pipe joint according to the first aspect of the present invention can be assembled and connected without making a mistake.

  The pipe joint according to the second aspect of the present invention can reinforce the joint main body with the ribs, and the ribs are too large to obstruct.

  In the pipe joint according to the third aspect of the present invention, the angle can be freely changed while the joint body is grounded by the rib.

  In the pipe joint according to the fourth aspect of the present invention, the size of the diameter of the connecting portion can be determined by the change in the width of the rib.

  In the pipe joint of the present invention according to claim 5, the size of the diameter of the connecting portion can be determined by the change in the height of the rib.

It is a perspective view which shows the pipe joint which concerns on one Embodiment of this invention. It is a front view which shows the pipe joint which concerns on one Embodiment of this invention. It is a partial sectional view showing a pipe joint concerning one embodiment of the present invention.

Hereinafter, the pipe joint which concerns on one Embodiment of this invention is demonstrated according to FIGS.
FIG. 1 is a perspective view showing a pipe joint according to one embodiment of the present invention, and FIG. 2 is a front view showing the pipe joint according to one embodiment of the present invention. FIG. 3 is a partial cross-sectional view showing a pipe joint according to an embodiment of the present invention.

  As shown in FIG. 1, the joint body 12 of the pipe joint 10 of the present embodiment has a plurality of (two in the present embodiment) connecting portions 14 and 16 to which different pipe bodies are respectively connected. It is L-shaped.

  As shown in FIG. 3, an L-shaped flow path 20 is provided inside the joint body 12 of the pipe joint 10. Further, one connecting portion 14 of the joint body 12 is provided with a synthetic resin inner cylinder 26 inserted into a pipe 24 made of resin or metal as a connected pipe body. A water stop ring 30 is fitted in each of the two circumferential grooves 28 formed on the surface.

  A synthetic resin outer cylinder 32 is disposed on the outer peripheral side of the inner cylinder 26 through a gap into which the pipe 24 is inserted. A pipe holding ring 34 having a V-shaped cross section is disposed on the distal end side of the outer cylinder 32, and a cylindrical cap 36 for preventing the pipe holding ring 34 from being detached is attached to the outer cylinder 32. . Moreover, the outer peripheral shape of the cap 36 is circular, and a release ring 38 for releasing the biting of the claw portion of the pipe holding ring 34 is mounted inside the cap 36.

  Therefore, when the pipe 24 is inserted between the inner cylinder 26 and the outer cylinder 32, the inner peripheral side end of the pipe holding ring 34 is caught on the outer peripheral surface of the pipe 24, thereby preventing the pipe 24 from coming off. The water stop ring 30 is in close contact with the inner peripheral surface of the pipe 24 for sealing (so-called inner surface seal). The pipe 24 is rotatable while being inserted between the inner cylinder 26 and the outer cylinder 32.

  When the release ring 38 is pushed in and pressed against the pipe holding ring 34, the tapered portion of the release ring 38 slides on the inclined surface on the inner peripheral side of the pipe holding ring 34, and the inner diameter of the pipe holding ring 34 is increased. The hook 24 is released and the pipe 24 can be pulled out.

  The other connecting portion 16 has substantially the same structure as that of the connecting portion 14, but the connecting portion 16 has a resin or metal as a tubular body having a slightly smaller inner and outer diameter than the pipe 24 (for example, a polybutene pipe). A pipe 40 made of (for example, a cross-linked polyethylene pipe) can be connected. That is, the diameter of the connecting portion 16 is smaller than the diameter of the connecting portion 14. Specifically, the diameters of the inner cylinder 26, the outer cylinder 32, the pipe holding ring 34, and the release ring 38 in the connecting portion 14 correspond to the pipe 24. The inner cylinder 26, the outer cylinder 32, and the pipe in the connecting portion 16 Each diameter of the retaining ring 34 and the release ring 38 corresponds to the pipe 40. 1 and 2, the cap 36 of the connecting portion 16 is indicated by a two-dot chain line.

  As shown in FIGS. 1 and 2, a rib 50 is formed linearly along the axial direction of the connecting portion 16 on the outer peripheral portion 16 </ b> A of the connecting portion 16 in the joint body 12. The bent portion 12 </ b> A reaches the vicinity of the cap 36 in the connecting portion 16. On the other hand, the rib is not formed in the outer peripheral part of the connection part 14 with a larger diameter compared with the connection part 16. For this reason, the rib 50 allows the operator to connect the pipe 40 whose diameter matches the connecting portion 16 by determining the magnitude relationship between the diameter of the connecting portion 14 and the diameter of the connecting portion 16. Yes. That is, the rib 50 is provided so that the pipe 24 is not erroneously connected to the connecting portion 16 and the pipe 40 is not erroneously connected to the connecting portion 14 during construction. In addition, the rib 50 is a part that does not fit the diameter of the connecting portions 14 and 16 (the water stop ring 30, the outer cylinder 32, the pipe holding ring 34, the cap 36, the release ring 38, etc.) when the pipe joint 10 is assembled. It is provided so that it cannot be mistakenly assembled.

  As shown in FIG. 2, the height of the rib 50 (height from the axis P1 of the joint body 12) H1 is the height of the outer peripheral portion 36A of the cap 36 provided on the joint body 12 (the axis of the joint body 12). The height from the heart P1) is the same as H2. The shape of the outer peripheral portion 50 </ b> A of the rib 50 is the same arc shape as the shape of the outer peripheral portion 36 </ b> A of the cap 36. Accordingly, the number of grounding points increases when the rib 50 is grounded in addition to the cap 36. As a result, it is possible to reinforce the joint body 12 against a load from above due to stepping or the like. Moreover, the rib 50 is too large and does not get in the way. Furthermore, when the angle is changed while the joint body 12 is grounded, the rib 50 does not get in the way and the angle can be changed freely.

  As shown in FIG. 3, the width W1 of the side 50B near the connecting portion 16 (tip) of the rib 50 is narrower than the width W2 of the side close to the connecting portion 14 (the bent portion 12A side of the joint body 12) 50C. The width W of the rib 50 is gradually reduced from the side 50C of the connecting portion 14 having a large diameter toward the side 50B of the connecting portion 16 having a small diameter. Therefore, the operator can discriminate between the diameter of the connecting portion 14 and the diameter of the connecting portion 16 by changing the width W of the rib 50.

  As shown in FIG. 2, the height (the height from the outer peripheral portion 16 </ b> A of the connecting portion 16) K <b> 1 of the side 50 </ b> B near the connecting portion 16 (tip) of the rib 50 is close to the connecting portion 14 (the joint body 12 The bent portion 12A side) is lower (smaller) than the height 50C (height from the outer peripheral portion 16A of the connecting portion 16) K2, and the height of the rib 50 (from the outer peripheral portion 16A of the connecting portion 16). The height K is gradually lowered from the side 50C of the connecting portion 14 having a large diameter toward the side 50B of the connecting portion 16 having a small diameter. Therefore, the operator can discriminate between the diameter of the connecting portion 14 and the diameter of the connecting portion 16 by changing the height K of the rib 50.

 (Action)

  In the pipe joint 10 of this embodiment, the rib 50 is formed in the connection part 16 with a small diameter, and the rib is not formed in the connection part 14 with a large diameter. For this reason, since the operator can determine the magnitude relationship between the diameter of the connecting portion 14 and the diameter of the connecting portion 16 by the rib 50, the pipe 40 having a small diameter is connected to the connecting portion 16 provided with the rib 50, and the rib A pipe 24 having a large diameter can be connected to the connecting portion 14 without 50. As a result, it is possible to prevent the pipe 24 from being erroneously connected to the connecting portion 16 during construction, and to prevent the pipe 40 from being erroneously connected to the connecting portion 14. Further, when the pipe joint 10 is assembled, the rib 50 allows parts (such as the water stop ring 30, the outer cylinder 32, the pipe holding ring 34, the cap 36, the release ring 38, etc.) that do not match the diameters of the connecting portions 14 and 16 to be assembled. It is possible to prevent incorrect assembly.

  Further, in the present embodiment, the rib 50 is formed linearly along the axial direction of the connecting portion 16, and the width of the rib 50 is that of the connecting portion 16 having a small diameter from the side 50 </ b> C of the connecting portion 14 having the large diameter. The connecting portion 16 is gradually narrowed toward the side 50B, and the height (the height from the outer peripheral portion 16A of the connecting portion 16) K of the rib 50 is small in diameter from the side 50C of the connecting portion 14 having a large diameter. It is gradually lowered toward the side 50B. For this reason, the operator can determine that the diameter of the connecting portion 14 is larger than the diameter of the connecting portion 16 based on the change in the width W and the change in the height K of the rib 50. As a result, the rib 50 can reliably prevent the pipe 24 from being mistakenly connected to the connecting portion 16 during construction, and can reliably prevent the pipe 40 from being erroneously connected to the connecting portion 14.

  In this embodiment, the height of the rib 50 (height from the axis P1 of the joint body 12) H1 is the height of the outer peripheral portion 36A of the cap 36 provided on the joint body 12 (the shaft of the joint body 12). The height from the center P1 is equal to H2, and the shape of the outer peripheral portion 50A of the rib 50 is the same arc as the shape of the outer peripheral portion 36A of the cap 36. For this reason, in addition to the outer peripheral portion 36 </ b> A of the cap 36, the outer peripheral portion 50 of the rib 50 is grounded to increase the number of contact points. As a result, it is possible to reinforce the joint body 12 against a load from above due to stepping or the like. Moreover, the rib 50 is too large and does not get in the way. Further, when changing the angle while the joint body 12 is grounded, the rib 50 does not get in the way and the angle can be changed freely (the change in the angle of the connecting portion is not hindered). In addition, since it is not necessary to reinforce the site | part close | similar to the cap 36 in the connection part 16 of the coupling main body 12, the height K2 of the rib 50 may be low.

[Other Embodiments]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above embodiment, the pipe 24 is a polybutene pipe and the pipe 40 is a cross-linked polyethylene pipe. However, the pipe to be connected is limited to a resin pipe such as a polybutene pipe or a cross-linked polyethylene pipe. It is good.

  Further, the shape of the rib 50 is not limited to the shape in the above embodiment, and is formed on the outer peripheral portion 16A of the connecting portion 16 of the joint body 10 and corresponds to the magnitude relationship of the diameters of the connecting portions 14 and 16. However, the rib 50 may be provided on the outer peripheral portion of the connecting portion 14 instead of the outer peripheral portion 16 </ b> A of the connecting portion 16. It is good. Moreover, you may provide the rib of a different shape in both the outer peripheral parts 14A and 16A of the connection parts 14 and 16, respectively.

  In the above embodiment, the outer peripheral shape of the cap 36 is circular. However, the outer peripheral shape of the cap 36 is not limited to a circular shape, and may be another shape such as a polygon.

  Moreover, in the said embodiment, although the connection parts 14 and 16 applied the present invention to the two pipe joints 10, this invention is applicable also to the pipe joint which has three or more connection parts.

DESCRIPTION OF SYMBOLS 10 Pipe joint 12 Joint main body 14 Connection part 16 Connection part 24 Pipe (tube body)
36 Cap 36A Cap outer periphery 40 Pipe (pipe)
50 Rib 50A Outer part of rib

Claims (5)

A joint body integrally formed with a plurality of connecting portions to which pipes having different diameters are connected;
Ribs formed on the outer periphery of the coupling portion of the joint body, and corresponding to the size relationship of the diameters of the plurality of coupling portions;
Pipe fittings with   The pipe joint according to claim 1, wherein the rib has the same height as the outer peripheral portion of the cap attached to the outer peripheral portion of the connecting portion.   The pipe joint according to claim 1 or 2, wherein an outer peripheral part shape of the rib is the same as an outer peripheral part shape of a cap attached to the outer peripheral part of the connecting part.   The joint body has two or more connecting portions, and a width of the rib is narrowed from a connecting portion having a large diameter toward a connecting portion having a small diameter. The pipe joint of any one of 1-3.   The joint body has two or more connecting portions, and the height of the ribs decreases from the connecting portion having a large diameter toward the connecting portion having a small diameter. A pipe joint given in any 1 paragraph of 1-4.

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