JP2009264402A - T-shaped branch pipe structure, branch protecting cover, and bypassing branch joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to branchingly install a pipe arranged on the opposite side to the branch connection port of a branch protecting cover when branchingly installing at least one of two pipes installed in parallel, in a T-shape. <P>SOLUTION: A hot water supply pipe P<SB>1</SB>installed on the opposite side to the branch connection port D<SB>2</SB>, out of the hot water supply pipe P<SB>1</SB>and a water supply pipe P<SB>2</SB>installed in parallel in the branch protecting cover C<SB>1</SB>, out of the hot water supply pipe P<SB>1</SB>and the water supply pipe P<SB>2</SB>installed in parallel, is connected to another hot water supply pipe P<SB>1</SB>branchingly installed in a linear protecting cover C<SB>0</SB>via a bypassing branch joint J<SB>1</SB>branchingly connectable in the form of stepping over the water supply pipe P<SB>2</SB>. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, one of two piping paths constituting a parallel piping path is connected by detour branching in a form straddling the upper side of the other piping path, and at least one of the two piping paths is branched by a T-shape. The present invention relates to a T-shaped branch piping structure, a branch protection cover, and a bypass branch joint.

  For example, when piping from a hot water supply source or a water supply source to a kitchen sink, unit bath, washroom, toilet, etc. where hot water supply or water supply is required, it is necessary to branch the middle of one pipe into a T-shape. There is a case. For example, FIG. 6 of Patent Document 1 shows a T-shaped joint referred to as a “cheese joint” that is accommodated in the branch protective cover when one pipe is accommodated in the straight protective cover. Has disclosed a piping structure for branching the one pipe into a T-shape.

On the other hand, the present applicant has developed a straight protective cover that holds and accommodates two pipes, for example, a hot water supply pipe and a water supply pipe in a parallel piping state. When one or both of the two pipes housed in such a straight protective cover are T-shaped branch pipes, the branch connection port of the branch protective cover of the two pipes piped in parallel is used as a reference. Thus, when trying to make a T-shaped branch pipe on the opposite side of the branch connection port, the pipe on the branch connection port side becomes an obstacle (interfering with the tube), and a general T-shaped joint There is a problem that branch piping cannot be used in use.
FIG. 6 of Japanese Patent Laid-Open No. 2004-270948

  The present invention enables the branch piping of the pipe disposed on the side opposite to the branch connection port of the branch protection cover when branching at least one of the two pipes piped in parallel in a T-shape. It is an issue.

  The invention of claim 1 for solving the above-mentioned problem is that two pipes constituting a parallel pipe line are detoured and branched in a form straddling the upper side of the other pipe line. Two main pipe-side straight protective covers for holding at least one of the passages in a T-shaped branch and holding and holding the two pipes in parallel by a holding portion formed inside; One branch side straight protective cover for holding and accommodating one or two pipes by a holding part formed inside, and two main pipe side straight protective covers arranged on the same straight line Two straight connection ports arranged to face each other and one or two T-branch pipes opened in a direction orthogonal to a line segment connecting the two straight connection ports A branch connection port for connecting a branch-side straight protective cover for housing the pipe; It has an overall shape that can avoid interference between the branch protection cover and other pipes connected in parallel or other joints connected to the other pipes in a form straddling the other pipes or other joints. Connect each of the first and second straight connection ports for connecting two tubes in a straight line and a T-branched tube orthogonal to the two tubes connected in a straight line. And a bypass branch joint in which the shaft centers of the three connection ports are arranged on the same plane, and the pipe line on the anti-branch connection side among the two pipe lines constituting the parallel pipe line The pipes connected to the branch side are connected to the pipe in the branch-side straight protective cover connected to the branch connection port via the bypass branch joint.

  According to the first aspect of the present invention, at least one of the two pipelines is T-branched by bypassing and connecting one of the two pipelines constituting the parallel pipeline to the upper side of the other pipeline. The pipe on the anti-branch port side of the two pipes piped in parallel in the parallel pipe line is another pipe penetrating the two straight connection ports of the branch protection cover, Or, since the joint connected to the other pipe is obstructed, the branch connection cannot be made, so that the bypass branch joint extends over the other pipe and is connected to the branch connection port via the bypass branch joint. Connected to one tube in the straight protective cover. A detour branch joint extends over the other pipe piped in the other pipe path, and the detour branch joint is accommodated in the branch protection cover. In the branch protection cover, of the two pipes piped in parallel, the pipe on the branch connection port side has no pipe or joint that becomes an obstacle to branch connection. It is connected to the other pipe in the straight protective cover connected to the branch connection port via the joint.

  As described above, the pipe on the side opposite to the branch connection port of the two pipes piped in the parallel pipe line with the branch connection port of the branch protection cover as a reference is connected to the T-shaped branch by using a bypass branch joint. it can.

  According to the invention of claim 2, at least one of the two pipelines is connected by bypass branch connection with one of the two pipelines constituting the parallel pipeline being hidden under the other pipeline. It is a structure in which the pipes are branched and branched, and two main pipe side straight protective covers for holding and accommodating two pipes in a parallel state by a holding portion formed inside, and formed inside Interference between one branch-side straight protective cover for holding and accommodating one or two pipes by the holding part and other pipes connected in parallel or other joints connected to the other pipes Each of the first and second straight connection ports for connecting the two tubes in a straight line; A branch connection port for connecting a T-branched pipe orthogonal to the two pipes connected in a straight line; A pipe that is provided with a bypass branch joint in which the shaft centers of the three connection ports are arranged on the same plane, and is piped to a pipe line on the anti-branch connection side of two pipe lines that constitute a parallel pipe line, It is characterized by being connected to a pipe in the branch side straight protective cover connected to the branch connection port via the bypass branch joint.

  Of the two pipes piped in the parallel pipe line, when the pipe piped in the pipe line on the side opposite to the branch connection port of the branch protection cover is branched, in the invention of claim 1, the two pipes One of the two pipes is detoured and connected in a form straddling the upper side of the other pipe. However, in the invention of claim 2, as means for detouring and connecting one of the two pipes to the back side of the pipe, 2 In order to bypass the pipe located on the opposite side of the branch connection port of the branch protection cover in the form of a book, it is formed on the base that constitutes the branch protection cover in order to bypass the lower part of the pipe on the branch connection port side. Detour opening and detour branch joint are used. In the branch protection cover, the pipe on the anti-branch connection port side of the two pipes piped in parallel passes through the bypass opening formed in the base of the branch protection cover, and the tube on the branch connection port side. It connects with one pipe | tube in the straight-shaped protective cover connected to the branch connection port via the detour branch joint arrange | positioned in the form where it dipped below. Here, as an example of the space portion formed on the back side of the branch protection cover, the bypass branch joint is disposed under the pipe disposed on the branch opening side of the branch protection cover. In the case of a recess (including a through hole) formed in the wall surface where the protective cover is installed, a spacer is provided between the wall surface and the base of the branch protective cover, and a space portion corresponding to the height of the spacer is provided. In some cases, both can be easily formed.

  The invention according to claim 3 is the other pipe connected to the other pipe or the other pipe when the pipe piped to at least one of the two pipe paths constituting the parallel pipe path is made to be a T-shaped branch pipe. In order to avoid interference with the joint, a branch protection cover for accommodating the bypass branch joint inside, a flat base fixed to the wall surface, and the base mounted on the base A lid that forms an accommodation space for accommodating the branch joint, and the lid comprises a top wall portion and both side wall portions that extend from the top wall portion toward the base, At each of the three end portions of the T-shaped lid body, three connection ports are formed respectively connected to a straight protective cover that accommodates two pipes in parallel piping, and the top wall portion of the lid body The part on the opposite side to the three connection ports is the accommodation space for the bypass branch joint It is characterized in that has a bulged top wall that bulges upward to form.

  The branch protection cover according to the invention of claim 3 includes the case where the invention of claim 1 is implemented, and causes the pipe piped to at least one of the two pipe lines constituting the parallel pipe path to be a T-shaped branch pipe. In order to avoid interference with the other pipe or another joint connected to the other pipe, a branch protection cover for accommodating the bypass branch joint therein, the bypass branch joint is By forming the top wall portion, it is accommodated in an internal accommodation space that is widened in a direction perpendicular to the wall surface or the base of the protective cover.

  The invention according to claim 4 is the other pipe connected to the other pipe or the other pipe when the pipe piped to at least one of the two pipe paths constituting the parallel pipe path is made to be a T-shaped branch pipe. In order to avoid interference with the joint, a branch protection cover for accommodating the bypass branch joint inside, a flat base fixed to the wall surface, and the base mounted on the base It consists of a lid that forms an accommodation space for accommodating the branch joint, and is attached to the three ends of the T-shaped base by attaching the lid to the two pipes in parallel. Three connection ports for connecting the straight protective cover to be accommodated are formed, respectively, and the bypass branch joint is connected to the base at a portion on the opposite side to the three connection ports in the base. Detour to enable placement from inside to outside It is characterized in that the opening is formed.

  In the branch protection cover according to the invention of claim 4, including the case of carrying out the invention of claim 2, the detour branch joint is hidden under a pipe different from the pipe to be branched among the two pipes. A branch protection cover used in the case of branch piping arranged in a form, wherein the bypass branch joint passes under a bypass opening formed in a base constituting the branch protection cover and below the other pipe Be placed. For this reason, according to the invention of claim 4, it is not necessary to form the bulging top wall portion on the lid body of the branch protection cover, and it is possible to use a normal lid body having a flat top wall portion. At the same time, the state in which the bypass branch joint is arranged in the form of being hidden under the another pipe cannot be visually recognized from the outside, and therefore there is an advantage that the branch pipe state is clear.

  Further, the invention according to claim 5 is the other pipe connected to the other pipe or the other pipe when the pipe piped to at least one of the two pipe paths constituting the parallel pipe path is made to be a T-shaped branch pipe. A bypass branch joint for avoiding interference with the joint and making a T-shaped branch connection, wherein the first and second connection ports for connecting two pipes in a straight line are located on the same axis And arranged in a form straddling the upper part of the straight cylindrical part formed at both ends and another pipe piped in parallel, or a joint connecting the other pipe, or in the form of diving below, And the detour cylindrical portion connected at right angles to the straight cylindrical portion and having a third connection port formed at the end.

  The detour branch joint according to the invention of claim 5 is a joint that can be used for carrying out the invention of claim 1 or 2, and is another pipe connected in parallel, or another joint connecting the other pipes. It is arranged in a form where the detour cylinder part straddles the upper part of the pipe, or in the form of diving the lower part, so that a general branch joint having an axial center on the same plane interferes with another pipe or the like and cannot be branched. According to the detour branch joint according to the invention of claim 5, the interference can be avoided and a T-shaped branch pipe can be realized.

  The invention of claim 6 is characterized in that, in the invention of claim 5, the cross-sectional shape of the detour cylindrical portion is flattened to be a horizontally long ellipse.

  According to the invention of claim 6, the height of the bypass tube portion of the bypass branch joint can be reduced while maintaining the same cross-sectional area as that of the straight tube portion. It is possible to reduce the height of the lid, which is the amount of bulging of the bulging top wall formed on the top wall of the lid of the protective cover. For this reason, the height of the cover body of the branch protection cover can be lowered without reducing the flow rate of the passing fluid, and the aesthetic deterioration due to the bulging of the bulging top wall portion can be suppressed.

  Here, in claims 1 and 2, the term “orthogonal” in “T-branch perpendicular to two straightly connected pipes” means that the crossing is strictly 90 °. The present invention is not limited, and includes a case where it is slightly deviated from 90 ° within a range not impairing the function of the T-shaped branch. Exactly in the same manner, the term “orthogonal” in claim 1 and claim 2 in “the branch connection port is opened in a direction perpendicular to the line segment connecting the two straight connection ports of the branch protection cover”. "The straight cylindrical part in which the first and second straight connection ports are formed at both ends and the bypass cylinder part in which the branch connection port is formed at one end are connected orthogonally" The term “perpendicular” also includes the case where the angle is slightly deviated from 90 ° within the range not impairing the function of the T-shaped branch, for the same purpose as described above. In addition, regarding “on the same axis” in “the first and second connection ports formed at both ends of the straight cylindrical portion” of claim 5 are also strictly. The present invention is not limited to the case of being on the same axis, and includes cases in which the "straight connection" is slightly deviated from the "same axis" within a range where the "straight connection" is not impaired.

  According to the present invention, when at least one of the two pipes piped in the two pipe paths constituting the parallel pipe path is T-shaped branch pipe, the other pipe or another pipe connected to the other pipe is connected. Based on the branch connection port of the branch protection cover that avoids interference with the joint and enables branch piping, the pipe on the opposite side of the two pipes connected in parallel passes through the bypass branch joint. By crossing the upper side of the other pipe or joint, or by diverting the back side of the pipe or joint in a hidden form, T-branch pipes can be used to cause interference with other pipes or other joints. As a result, at least one of the pipes that are piped in parallel can be T-branched by a bypass branch joint accommodated in the branch protection cover.

  Hereinafter, the present invention will be described in more detail with reference to a plurality of embodiments.

First, an example in which the T-shaped branch pipe is detoured in a direction away from the wall surface to the wall front side will be described. FIG. 1 is a perspective view of a state in which a base V and a lid L ₁ constituting a branch protection cover C ₁ according to the present invention are separated, and FIG. 2 is a perspective view of the base V viewed from the back. 3 is a front view of the base V, FIG. 4 is a sectional view taken along the line U-U in FIG. 3, FIG. 5 is a perspective view of the lid L ₁ , and FIG. FIG. 7-1 (a) and (b) are sectional views taken along lines X ₁ -X ₁ and X ₂ -X ₂ in FIG. 6, and FIG. X ₃ is -X _3-wire cross-section.

As shown in FIGS. 1 to 7, the branch protection cover C ₁ according to the present invention has a T-shape as a whole, and a base V fixed to a wall surface W via a plurality of screws B. And a lid L ₁ for forming a housing space A (see FIG. 9) which is covered with the base V and accommodates the bypass branch joint J ₁ and the general branch joint J ₂ therein. table V is and the lid L _1, are coupled together is engaged to be separable by a locking structure which will be described later. The base V and the lid body L ₁ are both formed by resin injection molding. The base V includes a T-shaped base plate portion 1, and two straight connection ports D ₁ formed along the main pipe direction Q ₁ by the cover of the lid L ₁ , A total of three connection ports including one branch connection port D ₂ along the branch piping direction Q ₂ orthogonal to the main pipe piping direction Q ₁ are provided. In the base plate portion 1 of the base V except for each of the three connection ports D ₁ and D ₂ , two L-shaped first standing walls having a thin plate shape and bent at a right angle are formed. The portion 2 and one linear second standing wall portion 3 are formed perpendicular to the base plate portion 1.

Each of the first and second upright wall portions 2 and 3 has both end portions in the longitudinal direction arranged slightly inward while maintaining the same plate thickness with respect to the central portion, and both end portions in the longitudinal direction. The connecting portion between the central portion and the central portion is formed in a bent state, and the portions other than the lower end portion along the height direction of the central portion of each of the first and second standing wall portions 2 and 3 It is thicker than the plate thickness at both ends. Each of the first and second standing wall portions 2 and 3 has the above-mentioned shape in a state where the lid L ₁ is integrally coupled to the base V by locking, as will be described later. In order to enable the operation of unlocking between the side wall portions 21 and 22 of the lid body L ₁ and the first and second standing wall portions 2 and 3 at the locking portion when releasing the locking. This is because the elastic deformation space 29 is formed. A pair of positioning ridges 4 for enabling connection to the three connection ports D ₁ and D ₂ in the base plate portion 1 by positioning in the width direction with the base V ₀ of the straight protective cover C ₀ . Are integrally formed along the main pipe direction Q ₁ and the branch pipe direction Q ₂ .

Further, as shown in detail in FIGS. 2 to 4, on the opposing inner side surfaces of the end portions of the standing wall portions 2 and 3, which are portions on both sides of the connection ports D ₁ and D ₂ of the base V. the lid L ₁ of the locking projection 24a to be described later, 24b and lockable locked projection 5 is formed along the pipe direction Q _1, Q _2, respectively. The locked protrusion 5 is easy to be locked with the locking protrusions 24 a and 24 b by sliding locking protrusions 24 a and 24 b of the lid body L ₁ , which will be described later, with respect to the distal end surface of the locked protrusion 5. Thus, it has a trapezoidal cross-sectional shape (see FIG. 9). The to-be-latched projection 5 is disposed slightly above the central portion along the height direction of each of the standing wall portions 2 and 3, and the to-be-latched projection 5 and a latching projection for the lid L ₁ described later. 24a, 24b in Togakakari sealed state, the lid L ₁ both pipe direction Q ₁ is relative to the base V, Q displacement prevention grooves 6 base plate portion 1 for preventing ₂ to shift It is formed perpendicular to. The anti-displacement groove 6 is open to the upper end of each upright wall portions 2 and 3, and reach the upper surface of the base plate portion 1, the opening of the displacement preventing groove 6, first connection of the lid L ₁ In order to facilitate the insertion of the plate portion 26, it is opened in the shape of a letter C that widens toward the upper end. 1 to 4, reference numeral 7 denotes a moldable projection 5 formed inwardly projecting from the inner surface of each of the first and second standing wall portions 2 and 3. A moving type (slide core) hole is shown.

Base V, when using a general branch joint J ₂ in the case where another tube can not branch line interferes with (water supply pipe P ₂ will be described later), by using the bypass branch joint J _1, said further If it is only when bypassing the pipe in the form straddling the upper side of the other pipe, it can also be used in common when branching by diving under the other pipe, and in the latter case, the bypass branch joint In order to allow J _{1 to} be disposed on the back side of the other pipe, a bypass opening H ₀ is formed in the base plate portion 1 and the bypass 91 is also provided to the wall member 91 to which the base V is fixed. It is necessary to form a through hole at a position corresponding to the opening H ₀ . For this reason, as shown in FIGS. 1 and 3, a portion on the opposite side of each of the three connection ports D ₁ and D ₂ in the base plate portion 1 is along the branch piping direction Q ₂ . Thus, a substantially rectangular thin-walled folding line 8 is formed. And in the center part of the part enclosed by the said substantially rectangular shape folding line 8 in the baseplate part 1, the 1st drilling center hole used as the center at the time of drilling one circle | round | yen in the wall material 91 on the back side. E ₁ is formed, and on both sides of the first perforation center hole E ₁ , a second pair of upper and lower pairs for forming a hole by superposition of two circular perforations in the wall material 91 on the back side The third perforation center holes E ₂ and E ₃ are respectively formed. Further, screw insertion holes 9 for inserting screws B for fixing the base V to the wall surface W are formed in portions of the base plate portion 1 adjacent to the three positioning protrusions 4. Further, a line segment that passes through the two centers of the straight connection port D ₁ arranged along the main pipe direction Q ₁ in the base plate portion 1, of the branch connection port D ₂ along the branch pipe direction Q ₂ At the portion where the line segment passing through the center intersects, when the base V is fixed to the wall surface W, each of the two ruled in directions orthogonal to each other to indicate the fixing position of the base V A visual recognition opening 12 is formed to make the intersection of the ruled lines M ₁ and M ₂ (see FIG. 15) visible. In the case of detour piping in a form straddling the upper side of the other pipe, the base plate portion 1 is not broken at the part of the folding line 8 to form the detour opening H ₀ . Each of the first to third perforation center holes E _{1 to} E ₃ can be used as a screw insertion hole.

  In addition, as shown in FIG. 2, the base plate portion 1 may be temporarily fixed using double-sided tape to determine the piping position, and the base plate portion may be compatible with the temporary fixing. A tape frame 11 for slightly sticking a square double-sided tape is provided on the back surface of 1 so as to protrude slightly.

On the other hand, as shown in FIG. 5 to FIG. 7-2, the lid body L ₁ has a pair of first side wall portions whose overall shape is substantially T-shaped and which is entirely bent in a substantially L-shape. 21 and a total of three side wall portions 21 and 22, which are a straight wall shape and a second side wall portion 22 bent in a cross section, are integrally connected by a top wall portion 23 having a substantially T-shape. Thus, a total of three connection ports, that is, a pair of straight connection ports D ₁ formed in the main pipe direction Q ₁ and a branch connection port D ₂ opened in a direction orthogonal to the straight connection ports D _1. D ₁ and D ₂ are provided, and the surface opposite to the top wall portion 23 is opened. The part on the opposite side to the three connection ports D ₁ and D ₂ in the top wall portion 23 can accommodate a bypass branch joint J ₁ for branch connection across another pipe that is connected in parallel. In order to do so, it bulges toward the side facing the opening 28 of the lid L ₁ (the side away from the wall surface W in a state where the branch protection cover C ₁ is fixed to the wall surface W), and the bulging ceiling wall portion 23a. It has become. As shown in Figures 5 and 7-2, the bulged top wall section 23a, the central portion along the main pipe direction Q ₁ in the top wall 23 is not the most bulging, the maximum bulging portion However, the amount of bulging gradually decreases toward both sides along the main pipe direction Q ₁ and toward the side along the branch pipe direction Q ₂ , so that the top wall 23 of each connection port D ₁ , D ₂ Connected.

Next, the lid side locking portion G provided on the inner side surfaces of the side wall portions 21 and 22 of the lid body L ₁ will be described mainly with reference to FIGS. 8 and 9. Figure 8 is a partially enlarged perspective view of the cover side locking portion G of the locking protrusions 5 and the lid L ₁ of the base V, Figure 9, engagement of the base V and the lid L ₁ FIG. As shown in FIGS. 8 and 9, the portions located on both sides of each of the three connection ports D ₁ and D ₂ on the inner side surfaces of the side wall portions 21 and 22, that is, the inner side surfaces of the side wall portions 21 and 22, respectively. In a portion corresponding to the formation portion of the locked protrusion 5 of the base V, there is a locking plate portion 25 formed with two locking protrusions 24a and 24b locked on the locked protrusion 5 on the inner surface. Each of the side wall portions 21 and 22 is disposed in parallel with the side wall portions 21 and 22 with a predetermined gap between the inner side surfaces. Each locking plate portion 25 is formed integrally with each side wall portion 21, 22 via first and second connecting plate portions 26, 27 orthogonal to each other on the inner surface of each side wall portion 21, 22. . The first connecting plate portion 26 is disposed at one end of the locking plate portion 25 in the piping directions Q ₁ and Q ₂ in parallel with the connection ports D ₁ and D _2, and the second connecting plate portion 27 is locked At the end of the plate part 25 on the top wall part 23 side, the locking plate part 25 and the first connecting plate part 26 are integrated with each other. It is arranged so as to be formed in an L-shape when viewed from the side of the mouth D _1, D _2. As described above, the locking plate portion 25 arranged at a predetermined interval between the first side wall portion 21 or the second side wall portion 22 has the first and second connecting plate portions 26 arranged orthogonal to each other. , 27 are connected to the first side wall part 21 or the second side wall part 22 through the first side wall part 21 or the second side wall part 22, so that the connection rigidity with respect to the first side wall part 21 or the second side wall part 22 is increased.

Further, when substantially bisected along a direction perpendicular to the locking plate 25 the lid L ₁ of the opening 28 (see FIGS. 6 to 7-2), the portion which is arranged on the side of the opening 28 The two locking projections 24 a and 24 b along the piping directions Q ₁ and Q ₂ are formed at a predetermined interval along a direction perpendicular to the opening 28. Then, when the lid L ₁ is covered with the base V, the first connecting plate portion 26 of the lid L ₁ is inserted into the three shift preventing grooves 6 of the base V, and the base V is in a state where the lid L ₁ is not displaced with respect to the two either direction of the pipe direction Q _1, Q ₂ which are orthogonal to each other, two locking projections 24a of the lid L _1, and one of the 24b, group The locked protrusion 5 of the base V is locked, and the lid L ₁ is locked to the base V and is integrally coupled. Incidentally, the gap between the case where the locked locking projection 24a of the projection 5 and the lid L ₁ of the base V is engaged, the end face of the lid L ₁ and the wall surface W in close contact with the wall surface W Is not generated, the appearance is improved, and when a small protrusion is present around the base V, the locked protrusion 5 of the base V and the lid L ₁ are locked. projection 24b is engaged, the even if small projections are present, thereby enabling covering of the lid L ₁ relative to the base V.

In order to separate the base V and the lid L ₁ by releasing the locking in a state where the lid L ₁ is locked with respect to the base V, as shown in FIG. An elastic deformation space 29 is formed between the first and second standing wall portions 2 and 3 of the base V and the side wall portions 21 and 22 of the lid body L ₁ , and using the elastic deformation space 29, When the portions close to the opening 28 of the side wall portions 21 and 22 of the lid L ₁ are pressed inward and elastically deformed, the locking plate portion 25 formed integrally with the side wall portions 21 and 22 is similarly used. is displaced inwardly, the engagement between the locking projection 5 and the lid L ₁ of the locking projection 24a of the base V (24b) is released easily, base V and the lid L in this state Separated from ₁ . 1, 5, and 7-1, 31 is a locking position display portion that indicates that the locking protrusions 24 a and 24 b, and thus the locking portion between the base V and the lid body L ₁ exists inside. there are each a portion to elastically deform the lid L ₁ when performing the separating operation.

Next, referring to FIG. 10 to FIG. 14, when two pipes piped in parallel are connected in a T-shaped branch connection, a branch pipe is formed in a form straddling over another pipe or in a submerged form. The bypass branch joint J ₁ used will be described. 10 and 11 are perspective views of a bypass branch joint J ₁ shown separate state straddling the tube, and the dive state, FIG. 12, bypass branch connection J ₁ state straddling another tube 13 is a cross-sectional view taken along the line Y ₁ -Y ₁ in FIG. 12, and FIGS. 14A and 14B are respectively a line Y ₂ -Y _{2 and a} line Y ₃ − in FIG. Y is a cross-sectional view of a _3-wire.

As shown in FIGS. 10 to 14, in the bypass branch joint J ₁ , the first and second connection ports 41 and 42 for directly connecting two pipes are arranged on the same axis. In the front view shown in FIG. 12, arranged in a form straddling the upper part of the straight cylindrical part 43 and another pipe piped in parallel, or another joint connecting the pipes, or in a form submerged below. It is constituted by a bypass cylinder part 45 having a third connection port 44 which is connected orthogonally to the straight cylinder part 43 and connected to the branch pipe. That is, the bypass tube portion 45 is coupled to a central portion in the axial direction of the straight tubular portion 43, the axis F ₁ of the straight tubular portion 43 which matches with the axis of the main pipe, the bypass branch connection J ₁ is arranged on the same plane as the axis F ₂ ′ of the portion of the third connection port 44 of the detour cylinder part 45 that matches the axis F _{0 of the} branch pipe that is branched and connected in a T-shape by ₁ ; And they are orthogonal. Axis F ₂ as a whole detour tubular portion 45, the axis F ₁ of the straight tubular portion 43, the axis F of the portion of the third connection port 44 of the bypass tube portion 45 perpendicular to the axis F _{1 2} ′ and the plane perpendicular to the plane including ₂ ′, the shaft center as a whole of the bypass branch joint J ₁ (the shaft center obtained by combining the shaft centers F ₁ and F ₂ ) is a three-dimensional space. Placed inside.

Further, the cross-sectional shape of the detour cylindrical portion 45 is an elliptical shape that is flattened most in the central portion along the direction of the axis F ₂ , and the straight cylindrical portion 43 and the third connection port 44 are formed from this portion. It gradually becomes circular toward both sides. By making the bypass cylinder part 45 into such a shape, there is an advantage that the amount of bulging of the top wall part 23 of the lid L ₁ can be reduced when the bypass branch joint J ₁ is accommodated in the branch protection cover C ₁ . . Note that a hot water supply pipe P ₁ and a water supply pipe P ₂ described later are both resin pipes, and the hot water supply pipe P ₁ or the water supply pipe P ₂ is connected to the connection ports 41, 42, 44 of the bypass branch joint J _1. In the state where the metal sleeve 46 is used and the hot water supply pipe P ₁ or the water supply pipe P ₂ is fitted in the connection ports 41, 42, 44 of the bypass branch joint J ₁ , the hot water supply pipe P ₁ or the water supply pipe is used. The end portion of the hot water supply pipe P ₁ or the water supply pipe P ₂ whose outer diameter is slightly increased by fitting the sleeve 46 fitted in advance to the outside of P _{2 to} the outside of the connection ports 41, 42, 44. It is done by press-fitting outside.

Next, referring to FIG. 15 to FIG. 20, using the above-mentioned branch protective cover C _{1, the} bypass branch joint J ₁ and the general branch joint J ₂ , the straight protective cover C ₀ is accommodated in parallel piping. A case where both the hot water supply pipe P ₁ and the water supply pipe P ₂ are branched in a T shape will be described. 15 is a perspective view of a state in which the base V of the branch protection cover C ₁ is fixed to the wall surface W. FIG. 16 is a straight line with respect to the base V of the branch protection cover C ₁ fixed to the wall surface W. is a perspective view of a state in which fixed by connecting the base V ₀ which protective cover C _0, 17, bypass branch connection J ₁ and general branch connection J branches piping hot water supply pipe P ₁ and the water supply pipe P _2, respectively ₂ is a perspective view of a state in which ₂ is arranged on the base V of the branch protection cover C ₁ , and FIG. 18 shows a state in which the bypass branch joint J ₁ and the general branch joint J ₂ are accommodated in the branch protection cover C ₁ . FIG. 19 is a front view showing a similar state, and FIG. 20 is a sectional view taken along line Z ₁ -Z ₁ of FIG. The general branch joint J ₂ includes a straight cylindrical portion 61 that connects the main pipe side pipe and a branch cylindrical portion 62 that connects the branch side pipe (see FIG. 19).

First, as shown in FIG. 15, contact with scribed the respective connection ports D _1, 2 present the layout lines of mutually orthogonal in a position to be the center in the width direction of D ₂ M _1, M ₂ on the wall surface W In addition, the base V is placed on the wall surface W by using a double-sided tape (not shown) on the back surface at a position where the intersection of the marking lines M ₁ and M ₂ can be viewed from the visual opening 12 of the base plate 1. Temporarily fixing, the base V is fixed to the set position of the wall surface W by a plurality of screws B.

Next, as shown in FIG. 16, the positioning protrusions provided to protrude in the respective piping directions Q ₁ and Q ₂ at the two straight connection ports D ₁ and one branch connection port D ₂ of the base V. using the conditions 4 performs positioning in the width direction of the base V ₀ which base V and straight protective cover C ₀ branched protective cover C _1, a total of three each connection port of the branch protective cover C ₁ The base V ₀ of the straight protective cover C ₀ is connected and fixed to the portions D ₁ and D ₂ , respectively. Here, the straight protective cover C ₀ is a protective cover that can be accommodated by parallel piping of two pipes, a hot water supply pipe P ₁ and a water supply pipe P ₂ , and is a base V ₀ fixed to the wall surface W. The lid body L ₀ is covered with the base V ₀ . Two pipe holding parts 52 parallel to each other are provided on the upper surface of the base plate part 51 of the base V ₀ , and on the back side of the base plate part 51, the base V of the branch protection cover C ₁ is provided. by inserting the positioning protrusion 4, the positioning concave 53 for positioning the width direction of the base V ₀ which the base V and straight protective cover C ₀ is formed. For this reason, the positioning protrusion 4 of the base V of the branch protective cover C ₁ is inserted and fitted into the positioning recess 53 of the base V ₀ of the straight protective cover C ₀ so that the widths of both bases V and V ₀ are obtained. In addition to positioning in the direction, the end faces of the base plate portion 1 of the base V and the base plate portion 51 of the base V ₀ are brought into contact with each other, so that the three connection ports D ₁ and D ₁ of the branch protection cover C ₁ are contacted. Each base V ₀ of a total of three straight protective covers C ₀ connected to the portion ₂ is fixed to the wall surface W using screws.

Thus, by connecting the two opposing straight connection port D straight protective cover C ₀ can be parallelepiped two pipes each to _one branch protective cover C _1, the branched protective cover C ₁ Two parallel pipe lines R ₁ and R ₂ (see FIGS. 16 and 19) passing therethrough are formed. In Example 1, the hot water supply pipe P ₁ and the water supply pipe P ₂ is plumbed to each distribution line R _1, R ₂ are both being T-shaped branch pipe, the branch connection port D of the branched protective cover C _{1 As the} branch side straight protective cover is connected to each straight connection port D ₁ of the branch protective cover C ₁ , the branch side straight protective cover connected to ₂ also requires two parallel pipe lines. A straight protective cover having the same structure as the main straight protective cover C ₀ is used. That is, in Example 1, two straight connection port D ₁ and one branch connection port D each connection port D ₁ of total three _2, D ₂ in the straight protective cover C of the same structure of the branched protective cover C ₁ While connecting the _0, straight protective cover C ₀ which is connected to two straight connection port D ₁ of the branch protective cover C ₁ is the "main side straight protective cover" branch protective cover C ₁ The straight protective cover C ₀ connected to the branch connection port D ₂ is a “branch-side straight protective cover”.

On the other hand, as shown in FIG. 16, the opposing end portions of the two hot water supply pipes P ₁ piped along the main pipe piping direction Q ₁ are both ends of the straight cylindrical portion 43 of the bypass branch joint J _1. One hot water supply pipe P ₁ connected to the first connection port 41 of the section via the sleeve 46 and branched along the branch piping direction Q ₂ is the end of the bypass cylinder 45 of the bypass branch joint J _1. The second connection port 42 is connected via a sleeve 46. Also, the water supply pipe P ₂ of one of the branch pipes along the water supply pipe P ₂ and the branch pipe direction Q ₂ of the two being the pipe along the main pipe direction Q ₁ is generally branched where the T-shaped The joint J ₂ is connected to each connection port by applying an adhesive on the outer peripheral surface of each end of the hot water supply pipe P ₁ and the water supply pipe P ₂ and inserting it.

Then, as shown in FIG. 17, among the three water supply pipes P ₂ connected in a T shape via the general branch joint J ₂ , the pipes were connected in a straight line along the main pipe direction Q ₁ . The two water supply pipes P ₂ are connected to the branch connection port D ₂ of the branch protection cover C ₁ out of the two pipe holding portions 52 of the base V ₀ of the straight protection cover C ₀ arranged in the main pipe piping direction Q _1. The general branch joint J ₂ is placed on the base V of the branch protection cover C ₁ . Thereafter, bypass branch joint J ₁ 2 pieces of hot water supply pipe P ₁ connected piping along the straight in the main pipe direction Q ₁ of the T-shaped three hot water supply tubes connected to form P ₁ via the Is held by the remaining pipe holding part 52 of the base V ₀ of the straight protective cover C ₀ arranged in the main pipe piping direction Q ₁ , and the bypass branch joint J _{1 is connected} to the general branch joint J ₂ and the water supply in the straddling form the upper tube P ₂ arranged on the base V branched protective cover C _1. As described above, when the general branch joint J ₂ is used, the water supply pipe P ₂ and the general branch joint J ₂ arranged on the branch connection port D ₂ side of the branch protection cover C ₁ with respect to the hot water supply pipe P ₁ are used. Although the general branch joint J ₂ cannot be arranged due to an obstacle, as shown in FIG. 20, the use of the bypass branch joint J ₁ avoids interference with the water supply pipe P ₂ and the general branch joint J _2. , T-shaped branch connection is possible.

Then, the axis F ₁ of the straight tubular portion 43 of the bypass branch joint J _1, and the axis F ₂ 'of the third connection port 44 of the bypass tube 45, since it is arranged on the same plane, the water supply By avoiding interference with the pipe P ₂ and the general branch joint J ₂ , a branch connection similar to the general branch joint J ₂ is possible. Further, the portion arranged immediately above the water supply pipe P ₂ along the axis F ₂ of the bypass cylinder portion 45 of the bypass branch joint J ₁ is most flattened, and the cross-sectional shape is a horizontally long ellipse, in gradually because it varies so as to approach the circle, bypass branch connection J ₁ bypass tube 45 branching protective cover C ₁ in order to accommodate a portion lid L ₁ of the top wall 23 as the distance from the portion The portion corresponding to the arrangement portion of the detour cylindrical portion 45 is bulged in the direction away from the base V to form the bulging top wall portion 23a, but the amount of bulging of the bulging top wall portion 23a can be reduced. . As a result, branch protection possible to reduce the bulging amount of the bulging top wall 23a of the cover C ₁ of the lid L ₁ of the top wall portion 23, the bulged top wall branch protection by the provision of the 23a cover C ₁ The degradation of aesthetics can be minimized. Further, even if each other by a central portion in the direction of the axis F ₂ of the bypass tube 45 to the most flat oval, since changes gradually so that the circular farther toward the sides from the maximum flat portion If the cross-sectional areas along the direction of the axis F ₂ are the same, the flow rate is not reduced even if the shape changes as described above, and the cross-sectional area gradually changes. The change in the cross-sectional area along the flow direction does not become the passage resistance of the fluid.

Finally, the lid body L ₀ is covered with the two bases V ₀ arranged in the main pipe direction Q ₁ and accommodated and held in the hot water supply pipe P ₁ and the water supply pipe P ₂ respectively, and the branch pipe direction Q _The lid body L ₀ is covered with a base V ₀ which is disposed in ₂ and accommodates and holds the hot water supply pipe P ₁ and the water supply pipe P ₂ for branch piping inside, and then, the bypass branch joint J ₁ and the general branch joint Piping work to branch the hot water supply pipe P ₁ and the water supply pipe P ₂ that are piped in parallel into a T-shape when the lid L ₁ is covered with the base V of the branch protection cover C ₁ in which J ₂ is accommodated. Ends. In this state, the portions of the connection ports D ₁ and D ₂ of the lid L ₁ of the branch protective cover C ₁ are covered outside the ends of the lids L ₀ of the three straight protective covers C ₀ in total. Thus, there is no gap between the connecting portions of the lids L ₀ and L ₁ . 17 and 18, reference numeral 54 denotes a heat insulating material attached to the back surface of the lid L ₀ of the straight protective cover C _{0. In} FIG. 5 and the cover side locking portion G of the lid L ₁ showing the mutual engagement portions engaged with each other.

Next, referring to FIG. 21 to FIG. 29, an example in which a T-shaped branch pipe is bypassed by diving under another pipe connected in parallel or under another joint connecting the other pipe. explain. FIG. 21 is a perspective view of a state in which a perforation center position E ₂ ′ of the bypass opening H ₀ is marked on the wall member 91 by a pair of upper and lower second perforation center holes E ₂ formed in the base plate portion 1. FIGS. 22A to 22C show the first to third perforation center holes E _{1 to} E ₃ formed in the base plate portion 1 of the base V and the detours perforated in the wall material 91. FIG. 23 is a perspective view of the base V on which the bypass opening H ₀ is formed, and FIG. 24 is a diagram illustrating the relationship between the holes H _{1 to} H ₃ . FIG. 25 is a perspective view showing a state where the bypass opening H _{0 of the} base V and the bypass hole H ₂ drilled in the wall material 91 communicate with each other, and FIG. 25 shows the branch protective cover C ₂ fixed to the wall surface W. FIG. 26 is a perspective view of a state in which the base V ₀ of the straight protective cover C ₀ is connected and fixed to the base V of FIG. 26, and FIG. 26 is a detour that branches the hot water supply pipe P ₁ and the water supply pipe P ₂ respectively. Branch Is a perspective view of a state where the joint J ₁ and general branch joint J ₂ is disposed on the base V branched protective cover C _2, FIG. 27 is diverted to the branch protection the cover C ₂ branch connection J ₁ and general branch connection is a perspective view of a state where J ₂ is accommodated, FIG. 28 is a front view showing the same state, FIG. 29 is a Z ₂ -Z ₂ line sectional view of FIG. 27.

The member used when the T-shaped branch pipe is diverted by diving under another pipe connected in parallel or under another joint connecting the other pipe is the branch protection cover C ₂ and the above-described member. is the bypass branch connection J ₁ and general branch joint J _2. The branch protection cover C ₂ includes the base V and the lid L ₂ that covers the base V. The lid L ₂ has the same structure as the lid L ₁ in which the bulging ceiling wall 23 a is formed on the ceiling wall 23, but the bulging ceiling wall 23 a is eliminated and the entire ceiling wall 23 becomes flat. Only the configuration is different, and the other configuration including the lid side locking portion K is the same as the lid L ₁ .

First, as shown in FIG. 21, a double-sided tape on the back surface (see FIG. 21) is placed at the base installation position of the wall surface W with reference to _two ruled lines M ₁ and M ₂ which are ruled on the wall surface W at right angles to each other. The base V is temporarily fixed using a not shown), and in this state, the position of the drilling center position E ₂ ′ of the bypass hole H ₂ drilled in the wall material 91 is marked on the wall W. Bypass branch connection J ₁ is used in a T-branch of the hot water supply pipe P _1, branched hot-water supply pipe P ₁ is on one side with respect to the center in the width direction of the branch connection port D ₂ (FIG. 21 left) Since it is disposed, a wall surface is formed by using a pair of upper and lower second perforation center holes E ₂ formed in a region surrounded by a substantially square-shaped breaking groove 8 formed in the base plate portion 1 of the base V. Mark each position of the drilling center position E ₂ '. That is, as shown in FIG. 22 (a), the base plate portion second drilling center hole E ₂ formed of upper and lower pair of 1, drilling center position on the wall by inserting the tip of the scribe tool 92 Mark each E ₂ '. Then, two circular perforations are made in the wall material 91 around each perforation center position E ₂ ′, and a bypass hole H ₂ is formed by superposition of the two circular perforations.

In addition, the bypass hole H ₃ shown in FIG. 22B corresponds to a case where a bypass bypass joint J ₁ is used for bypass connection to a pipe bypassed on the right side, and a pair of upper and lower third drilling centers. In this case, two circular holes are formed around two hole center positions E ₃ ′ marked according to the hole E ₃ , and the bypass hole H ₁ shown in FIG. A large circular hole symmetric with respect to the center of the wall material, and one circular hole is drilled in the wall member 91 around the hole center position E ₁ ′ marked according to the first hole center hole E _1. Is the case. In this way, when two pipes connected in parallel are connected in a T-shaped branch connection, the bypass holes H _{1 to} H ₃ corresponding to the position where the bypass branch joint J ₁ is arranged are provided on the back wall of the base V. The material 91 can be formed.

Next, as shown in FIG. 23, the base V temporarily fixed to the wall surface W is once removed, and surrounded by the break-off groove 8 in the base plate portion 1 by the substantially square-shaped break-off groove 8. When the portion to be bent is folded, a bypass opening H ₀ is formed at the center of the base plate 1. On the other hand, two circular perforations are made on the wall member 91 around a pair of upper and lower ruled perforation center positions E ₂ ′ based on a pair of upper and lower first perforation center holes E ₁ of the base plate 1. Then, a bypass hole H ₂ is drilled in the wall material 91 by superposition of the two circular drills (see FIG. 24). In FIG. 23, reference numeral 13 denotes a broken piece that is broken by forming a bypass opening H ₀ in the base plate portion 1 of the base V.

Then, as shown in FIG. 24, a plurality of screws B are used at the set position of the wall surface W using _two ruled lines M ₁ and M ₂ which are ruled perpendicularly to the wall surface W. When the base V is permanently fixed, a substantially left half portion of the bypass opening H ₀ formed at the center of the base plate portion 1 and the bypass hole H ₂ perforated in the wall member 91 match.

Next, as shown in FIG. 25, in the same manner as in the first embodiment, the base of the straight protective cover C ₀ is respectively connected to the pair of right and left straight connection ports D ₁ of the base V fixed to the wall surface W. It is fixed to the wall surface W by connecting the V _0, fixed to the wall surface W by connecting the base V ₀ which straight protective cover C ₀ for bypass piping branch connection port D ₂ of the base V. On the other hand, with the bypass cylinder portion 45 of the bypass branch joint J ₁ facing the back side, the two hot water supply pipes P ₁ piped along the main pipe piping direction Q ₁ are connected directly to the bypass branch joint J ₁ . while connected to the first connection port 41 at both ends of the Jo tubular portion 43, connecting the hot water supply pipe P ₁ for bypass pipe to the second connecting port 42 of the bypass tube 45. In general branch two water supply pipes P ₂ of which is plumbed to the mains pipe direction Q _1, a total of three water supply pipe P ₂ is bypassed piping along the branch pipe direction Q ₂ the water supply pipe P ₂ T-branch connected through the joint J _2.

Further, the bypass cylinder portion 45 of the bypass branch joint J ₁ in which the two hot water supply pipes P ₁ are directly connected and the one hot water supply pipe P ₁ is T-shaped branch connected is connected to the branch protective cover C _2. The bypass branch joint J ₁ is arranged in the base V in a form of being inserted into the bypass opening H _{0 of the} base V and the bypass hole H ₂ formed in the wall material 91, and thereafter, three water supplies In a form in which the portion of the straight cylindrical portion 61 of the general branch joint J ₂ connecting the pipe P ₂ with the T-shaped branch connection is inserted into a recess formed on the front side by the bypass cylinder portion 45 of the bypass branch joint J ₁ The general branch joint J ₂ is arranged in the base V. As a result, the hot water supply pipe P ₁ and the water supply pipe P ₂ are connected in parallel in both the main pipe part and the branch part, and are accommodated and held in the pipe holding parts 52 of the base V ₀ of the straight protective cover C _0. . Therefore, as shown in FIGS. 26 and 29, the hot water supply pipe P ₁ is the pipe to the conduit on the opposite side of the branch connection port D ₂ is the pipe to the conduit side of the branch connection port D ₂ that to avoid interference with the water supply pipe P _2, 2 pieces of water supply pipe P ₂ of the general branch joint J ₂ of the straight tube 61 in a form that dived the straight tube 61 to the straight connection T-shaped branch connection is made via a detour branch joint J ₁ arranged on the back side.

Finally, in the same manner as in the first embodiment, the lid bodies L ₀ are respectively attached to the two bases V ₀ arranged in the main pipe direction Q ₁ and accommodating and holding the hot water supply pipe P ₁ and the water supply pipe P ₂ therein. The lid L ₀ is covered with the base V ₀ which is arranged in the branch pipe direction Q ₂ and accommodates and holds the branch pipe hot water supply pipe P ₁ and the water supply pipe P ₂ inside, and then detours. When the cover body L ₂ is covered with the base V of the branch protection cover C ₂ in which the branch joint J ₁ and the general branch joint J ₂ are accommodated, both the hot water supply pipe P ₁ and the water supply pipe P ₂ that are connected in parallel are T Piping work for branching into a letter shape ends.

As described above, when the T-shaped branch pipe is bypassed by diving under another pipe connected in parallel or under another joint connecting the other pipe, the lid of the branch protection cover C ₂ is used. The body L ₂ can use a normal lid that does not have a bulging ceiling wall, and in terms of appearance, it is a direct protection connected to the connection ports D ₁ and D ₂ of the branch protection cover C _2. The height is almost the same as the cover C ₀ and the beauty is good.

Further, as a bypass space communicating with the bypass opening H ₀ formed in the base V on the back side of the branch protection cover C ₂ , the bypass holes H _{1 to} H ₃ formed in the wall member 91 as described above are provided. It is not limited, and a spacer may be arranged between the base V and the wall surface W, and a space corresponding to the height of the spacer may be used. A non-through hole formed in the wall material may be used.

In the second embodiment, as in the first embodiment, both the hot water supply pipe P ₁ and the water supply pipe P ₂ piped in the pipe lines R ₁ and R ₂ formed in the main pipe direction Q ₁ are used. to have T-branch pipe, two straight connection port D ₁ and one meter each of the three connection ports of the branch connection port D ₂ D _1, D ₂ in the straight of the same configuration of the branched protective cover C ₂ While connecting the protective cover C _0, straight protective cover C ₀ which is connected to two straight connection port D ₁ of the branch protective cover C ₁ is the "main side straight protective cover", branch protection straight protective cover C ₀ which is connected to the branch connection port D ₂ of the cover C ₂ is "branched side straight protective cover".

Examples 1 and 2 are examples in which two hot water pipes P ₁ and water pipes P ₂ piped in parallel are both T-shaped branch pipes using different types of branch joints J ₁ and J _2. Only the hot water supply pipe P ₁ may be branched, and this T-shaped branch pipe will be described with reference to FIG. The branch piping example shown in FIG. 30 is a case where the hot water supply pipe P ₁ is branched in opposite directions at two branch portions. Correspondingly, the branch protection cover C ₁ has its branch connection port D. It is fixed to the wall surface W so that ₂ faces in opposite directions. When the piping position of the hot water supply pipe P ₁ is opposite to the branch connection port D ₂ of the branch protection cover C ₁ , the bypass branch joint J ₁ is used to straddle the upper side of the water supply pipe P ₂ . When the piping position of the hot water supply pipe P ₁ is on the same side with respect to the branch connection port D ₂ , there is no interference and therefore the branch pipe using the general branch joint J ₂ do it.

Further, in the third embodiment, only the hot water supply pipe P ₁ out of the _two hot water supply pipes P ₁ and water supply pipes P ₂ piped in parallel in the main pipe direction Q ₁ is made to be a T-shaped branch pipe, and the branch protective cover C _{As the} branch-side straight protective cover connected to _one branch connection port D ₂ , a straight protective cover C ₀ capable of parallel piping of two pipes is used, but as shown in FIG. It is possible to use a straight protective cover C ₀ ′ that can pipe only one pipe, and the branch protective cover C ₁ ′ used in this case is a straight protective that can pipe only one pipe. The one having a branch connection port D ₂ ′ corresponding to the cover C ₀ ′ is used.

  Examples 1 to 3 are examples in which a straight pipe portion and a T-shaped branch pipe portion of a pipe are accommodated and protected in respective straight and branch protective covers, but a portion that does not require a protective cover For example, when piping to the back of the wall or under the floor, exposed piping may be used. Even in this exposed piping, the bypass branch joint according to the present invention can be used to branch the T-shape.

The connection of the bypass branch joint J ₁ and the pipe of the above embodiment uses a sleeve 46 but, As the connecting structure, in addition to, in combination with the press-fitting the adhesive construction of the sleeve structure, the caulking structure Etc.

A base V and the lid L ₁ constituting the branched protective cover C ₁ according to the present invention is a perspective view of a separated state. It is the perspective view which looked at the base V from the back. 2 is a front view of a base V. FIG. FIG. 4 is a cross-sectional view taken along the line U-U in FIG. 3. It is a perspective view of the lid L _1. It is a rear view of the lid L _1. (A), (b) is a sectional view of the X ₁ -X ₁ line and X ₂ -X ₂ line in FIG. 6, respectively. FIG. 7 is a cross-sectional view taken along line X ₃ -X _{3 in} FIG. 6. It is a partially enlarged perspective view of the cover side locking portion G of the locking protrusions 5 and the lid L ₁ of the base V. It is a cross-sectional view of the locking portion of a base V and the lid L _1. It is a perspective view of a bypass branch joint J ₁ showing a state straddling the separate tube. It is a perspective view of a bypass branch joint J ₁ showing a state in which dived another tube. It is a front view of a bypass branch connection J ₁ state straddling another tube. It is a Y ₁ -Y ₁ line sectional view of FIG. 12. (A), (b) is a cross-sectional view of FIG. 13, respectively of the Y ₂ -Y _2-wire, and Y ₃ -Y _3-wire. It is a perspective view of a state of fixing the base V branched protective cover C ₁ to the wall W. It is a perspective view of a state in which fixed by connecting the base V ₀ which straight protective cover C ₀ against the wall W to a fixed branch protective cover C ₁ of the base V. It is a perspective view of a state where the bypass branch joint J ₁ and general branch connection J ₂ to the branch pipe hot water supply pipe P ₁ and the water supply pipe P ₂ each are arranged on the base V branched protective cover C _1. Is a perspective view showing a state in which the branch protection bypass branch to cover C ₁ joint J ₁ and general branch joint J ₂ is accommodated. It is a front view which shows the same state. FIG. 20 is a sectional view taken along line Z ₁ -Z ₁ in FIG. FIG. 6 is a perspective view of a state in which a perforation center position E ₂ ′ of the bypass opening H ₀ is marked on the wall member 91 by a second perforation center hole E ₂ formed in the base plate portion 1. (A) to (c) are the first to third perforation center holes E _{1 to} E ₃ formed in the base plate portion 1 of the base V and the bypass hole H ₁ perforated in the wall member 91. is a diagram showing the relationship between to H _3. Is a perspective view of the bypass opening H ₀ is formed base V. FIG. 6 is a perspective view showing a state in which a base V is fixed to a wall surface W, and a bypass opening H _{0 of the} base V and a bypass hole H ₂ drilled in a wall material 91 communicate with each other. It is a perspective view of a state in which fixed by connecting the base V ₀ which straight protective cover C ₀ with respect to the fixed branch protective cover C ₂ of the base V to the wall W. It is a perspective view of a state where the bypass branch joint J ₁ and general branch connection J ₂ to the branch pipe hot water supply pipe P ₁ and the water supply pipe P ₂ each are arranged on the base V branched protective cover C _2. It is a perspective view showing a state in which the branch protection bypass branch into the cover C ₂ joints J ₁ and general branch joint J ₂ is accommodated. It is a front view which shows the same state. FIG. 28 is a sectional view taken along line Z ₂ -Z _{2 of} FIG. 27. It is the typical top view which carried out T-shaped branch piping of only one pipe among two pipes piped in parallel. It is another typical top view which carried out T-shaped branch piping of only one pipe among two pipes piped in parallel.

Explanation of symbols

A: Containment space
C ₀ : Straight protective cover (Main pipe-side straight protective cover, branch-side straight protective cover)
C ₀ ': Straight protective cover (branch side straight protective cover)
C ₁ , C ₁ ', C ₂ : Branch protection cover
D ₁ : Straight connection port D ₂ , D ₂ ': Branch connection port
H ₀ : Detour opening H _{1 to} H ₃ : Detour hole
J _1: bypass branch fittings
J _2: General branch connection L _1, L _2: the lid R _1, R _2: piping path
Q ₁ : Main piping direction
Q ₂ : Branch piping direction
V: Base
1: Base plate part 21, 22: Side wall part
23: ceiling wall 23a: bulging ceiling wall
41: First connection port
42: Second connection port
43: Straight cylindrical part
44: Third connection port
45: Detour tube
61: Straight cylindrical part
62: Branch cylinder

Claims (6)

It is a structure in which one of two piping paths constituting a parallel piping path is connected by detour branching in a form straddling the upper side of the other piping path, and at least one of the two piping paths is branched by a T-shape. And
Two main pipe side straight protective covers for holding and accommodating two pipes in a parallel state by a holding part formed inside;
One branch-side straight protective cover for holding and accommodating one or two tubes by a holding portion formed inside;
Two straight connection ports arranged opposite to connect two main pipe side straight protective covers arranged on the same straight line, and in a direction perpendicular to a line segment connecting the two straight connection ports A branch protection cover having one branch connection port for connecting a branch-side straight protective cover that is opened and accommodates one or two pipes that are T-shaped branch pipes;
Two pipes having an overall shape capable of avoiding interference with other pipes connected in parallel or other joints connected to the other pipes in a form straddling the other pipes or other joints First and second straight connection ports for direct connection, and a branch connection port for connecting a T-branched tube perpendicular to the two tubes connected in a straight line A detour branch joint in which the axial centers of the three connection ports are arranged on the same plane,
With
Of the two pipes constituting the parallel pipe, the pipes connected to the pipes on the side opposite to the branch connection port are connected to the branch side straight protective cover connected to the branch connection port via the bypass branch joint. A T-shaped branch piping structure characterized by being connected to a pipe. It is a structure in which one of the two piping paths constituting the parallel piping path is connected by detour branching in a form that lies below the other piping path, and at least one of the two piping paths is branched by a T-shape. And
Two main pipe side straight protective covers for holding and accommodating two pipes in a parallel state by a holding part formed inside;
One branch-side straight protective cover for holding and accommodating one or two tubes by a holding portion formed inside;
It has an overall shape capable of avoiding interference with other pipes connected in parallel or other joints connected to the other pipes in a form that lies below the other pipes or other joints. First and second straight connection ports for directly connecting two pipes, and a T-branched pipe orthogonal to the two pipes connected in a straight line A detour branch joint in which the axes of the three connection ports with the branch connection port are arranged on the same plane;
With
Of the two pipes constituting the parallel pipe, the pipes connected to the pipes on the side opposite to the branch connection port are connected to the branch side straight protective cover connected to the branch connection port via the bypass branch joint. A T-shaped branch piping structure characterized by being connected to a pipe. In order to avoid interference with the other pipe or another joint connected to the other pipe when the pipe piped to at least one of the two pipe paths constituting the parallel pipe path is T-shaped branch pipe. A branch protection cover for accommodating the detour branch joint inside,
A flat base fixed to the wall surface, and a lid that is assembled with the base to form an accommodating space for accommodating the branch joints therein.
The lid body includes a top wall portion and both side wall portions extending from the top wall portion toward the base, and each of the three end portions of the T-shaped lid body has 2 Three connection ports are formed, each connected to a straight protective cover that accommodates the pipes in parallel.
The portion of the top wall portion of the lid that is opposite to the three connection ports is a bulging heaven wall portion that bulges upward to form a storage space for the bypass branch joint. Branch protection cover characterized by In order to avoid interference with the other pipe or another joint connected to the other pipe when the pipe piped to at least one of the two pipe paths constituting the parallel pipe path is T-shaped branch pipe. A branch protection cover for accommodating the detour branch joint inside,
A flat base fixed to the wall surface, and a lid that is assembled with the base to form an accommodating space for accommodating the branch joints therein.
At the three ends of the T-shaped base, there are three connection ports for connecting a straight protective cover that accommodates two pipes in parallel by being assembled with the lid. A detour for enabling the detour branch joint to be arranged from the inside of the base toward the outside in a portion which is formed and is opposite to the three connection ports in the base. A branch protective cover characterized in that an opening is formed. When pipes piped to at least one of the two pipe lines constituting the parallel pipe path are T-shaped branch pipes, avoid interference with the other pipe or another joint connected to the other pipe. A detour branch joint for making a T-shaped branch connection,
The first and second connection ports for connecting two pipes in a straight line are located on the same axis and formed at both ends, and another pipe piped in parallel, or It is arranged in a form straddling the upper part of the joint connecting the other pipe, or in a form of diving below, and is connected orthogonally to the straight cylindrical part in a front view, and has a third connection port at the end part. A bypass branch joint comprising: a bypass cylinder portion formed with   6. The bypass branch joint according to claim 5, wherein a cross-sectional shape of the bypass cylinder portion is flattened to be a horizontally long ellipse.

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