JP6794317B2 - Pipe fittings, fixed member devices, and fixed body devices - Google Patents

Description

The present invention relates to a pipe joint, a fixed member device, and a fixed body device that can prevent the screwed member from rotating and loosening with respect to the joint body due to the twisting habit of the pipe material.

In the present specification, for the purpose of specifying the present invention, each technical term related to "screw" of "screw", "screw", "screw" and "screw rotation" is frequently used. Are not academic terms, so each technical term is used after being defined below.
"Screw attachment" refers to a state in which a male screw member having a male screw portion and a female screw member having a female screw portion are connected to each other by a screw connection between the male screw portion and the female screw portion, and "screw advance" means "screw". When rotating a male-threaded member or a female-threaded member in a "screwed" state, it means rotating the male-threaded member or the female-threaded member in a direction in which the number of threads to be screwed increases, which is the opposite of "screwing". It refers to rotating a male screw member or a female screw member in a direction in which the number of threads of a screw connection decreases, and "screw rotation" means that a male screw member or a female screw member in a "screwed" state rotates.

As shown in Patent Document 1, for example, as one of the piping construction methods for attaching a faucet to the front side of a building wall, a resin pipe material is provided from the back of the wall to a wall through hole formed in the building wall. There is known a method of pulling in, connecting a joint body to the pipe material on the wall surface, and screwing a screwing member fixed to the building wall to the joint body. However, in this method, it is necessary to connect the joint body to the tip of the pipe material on the wall surface after the pipe material is inserted into the wall through hole of the building wall, resulting in poor piping efficiency.

Therefore, the applicant applies the pipe material through the wall through hole while the joint body is still attached to the tip of the pipe material, pulls out the tip of the pipe material to the wall surface, and attaches the pipe material to the building wall. After screwing the screwing member to be fixed to the wall surface of the building, the pipe material is pulled back to the wall through hole to develop a piping construction method for fixing the screwing member to the wall surface.

However, in the above method, in order to screw the screwing member to the joint body at the tip of the pipe material that is pulled out from the wall through hole and is not fixed, the pipe material is screwed in the screw rotation direction of the screwing member at the time of the screwing. By being twisted, a "twisting habit" remains in the resin pipe material, and after fixing the screwing member to the wall surface, the "residual twisting force (twisting habit)" causes the screwing member to be attached to the joint body. It may loosen by being rotated.

Japanese Unexamined Patent Publication No. 2013-209844

In the present invention, in a state where the pipe material to which the joint body is attached to the tip is pulled from the back of the wall and pulled out to the surface of the wall, two types of screwing members are screwed to the joint body to the back. In the piping construction method in which the screwed member on the side is relatively fixed to a structure such as a building, even after the screwed member is fixed to a structure such as a wall material, due to the "twisting habit" of the pipe material, the joint body On the other hand, it is an object to prevent the screwing member from loosening.

The invention of claim 1 for solving the above problem is for a wall through hole formed in a building wall so that a pipe connecting portion to which a pipe material is connected is formed on one end side and the other end side faces the wall surface. A pipe joint composed of a joint body that is fixedly arranged and a screwing member that is screwed to the joint body.
In the joint body, the first and second male screw portions, which are in a reverse screw relationship with each other, are formed at positions shifted in the axial direction.
The screwing member is composed of a first screwing member that is screwed to one of the male screw portions to a state where it cannot be screwed, and a second screwing member that is screwed to the other male screw portion. It's made
The first screwing member has a fixing portion that is fixed relative to the building wall.
The second screwing member screwed to the other male screw portion is characterized in that it can come into contact with the first screwing member screwed to the one male screw portion or the building wall.

According to the invention of claim 1, when the first screwing member is screwed to the joint body, the first screwing member may be given a "twisting habit (residual twisting force)" to the pipe material. .. When the direction of the "twisting habit" is opposite to the direction of screw rotation when the first screwing member is screwed, the "twisting habit" causes the first screwing member to the joint body. Since it acts to further screw, the first screwing member does not loosen with respect to the joint body. On the contrary, when the direction of the "twisting habit" is the screw rotation direction at the time of screwing of the first screwing member, the "twisting habit" is applied to the first and second screwing members. On the other hand, they act to move to the front side of the wall and the back side of the wall, respectively, but the first and second screwing members are attached to the first and second male threaded portions of the joint body which are in a reverse screw relationship with each other. Since they are screwed together and the second screwing member is in contact with the first screwing member or the building wall, neither the first screwing member nor the second screwing member can rotate. The current state is maintained and none of them loosens.

The invention of claim 2 is the invention of claim 1, wherein a packing is interposed between the first male threaded portion and the second male threaded portion, and the first screwed member or the second screwed member and the joint main body are interposed. It is characterized by the fact that the water is stopped between and.

According to the invention of claim 2, a packing is interposed between the first male threaded portion and the second male threaded portion formed on the joint body, and either the first screwed member or the second screwed member is provided. Is in a screwed state, and by impacting the packing, water is stopped between the joint body and the first screwed member or the second screwed member, and the first screwed member or the second screw is screwed. Since the landing member does not move slightly in the axial direction of the joint body with respect to the packing, a high water blocking structure is realized.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the joint body has a contact restricting portion that abuts the first screwing member to regulate further screwing. It is supposed to be.

According to the invention of claim 3, when the first screwing member is rotated and screwed to the joint body integrally connected to the tip of the pipe material, the first screwing member is attached to the joint body. Since the contact restricting part that regulates the screwing of the joint body is provided, the shaft of the joint body of the first screwing member to the joint body can be simply rotated by simply rotating the first screwing member with respect to the joint body. The screwing position along the direction can be accurately determined. Further, since the screwing operation of the first screwing member to the joint body integrally connected to the tip of the pipe material must be performed in a relatively unstable posture, the contact regulation formed on the joint body. Since it is only necessary to randomly rotate the screw until the first screwing member comes into contact with the portion, the screw rotation operation becomes easy.

The invention of claim 4 is a fixed member device including a fixed member main body fixedly arranged with respect to a wall through hole formed in a building wall and a screwed member screwed to the fixed member main body. There,
The main body of the member to be fixed is connected to the tip of the pipe material that is pulled into the wall through hole from the back of the building wall, and the first and second male screw portions that are in a reverse screw relationship with each other are displaced in the axial direction. Formed in position,
The screwing member is composed of a first screwing member that is screwed to one of the male screw portions to a state where it cannot be screwed, and a second screwing member that is screwed to the other male screw portion. It's made
The first screwing member has a fixing portion that is fixed relative to the building wall.
The second screwing member screwed to the other male screw portion is characterized in that it can come into contact with the first screwing member screwed to the one male screw portion or the building wall.

The invention of claim 4 comprises a fixed member main body in which the "pipe joint" defined in claim 1 is fixedly arranged in a wall through hole, and a screwed member screwed to the fixed member main body. As a "fixed member device", it is grasped from different aspects, and its substantial configuration and operation are equivalent to those of the "pipe joint" according to the invention of claim 1.

The invention of claim 5 is a pipe material in which the first and second male threaded portions, which are in a reverse screw relationship with each other, are formed at positions shifted in the axial direction and are drawn into a wall through hole of a building wall from the back of the wall. The fixed body connected to the tip and
A fixing member having a female threaded portion screwed to one of the male threaded portions and a fixing portion fixed to a structure such as a building.
Each of the male threaded portions includes a lock nut having a female threaded portion screwed to the other male threaded portion.
The fixing member screwed to the one male screw portion in a non-screwable state is provided with a lock nut screwed to the other male screw portion so as to abut, and the fixing member is provided with the lock nut. It is characterized in that it can be fixed to the structure in a state where the nuts are in contact with each other.

According to the fifth aspect of the present invention, the lock nut can prevent the fixing member screwed to the fixed body body from being screwed back, so that the fixing member does not loosen with respect to the fixed body body during work and is stable. You can work.

According to the present invention, when the first screwing member is screwed to the joint body, the first screwing member may be given a "twisting habit" to the pipe material. The first and second male threaded portions having a reverse screw relationship are formed at positions shifted in the axial direction, and the screwing member is screwed to a state in which it cannot be screwed into one of the male threaded portions. The second screwing member is composed of a first screwing member to be attached and a second screwing member screwed to the other male screw portion, and the second screwing member screwed to the other male screw portion is the one male screw portion. Since it is in contact with the first screwing member or the building wall screwed to the joint body, the first and second screwing to the joint body regardless of the direction of the "twisting habit". None of the members will come loose.

It is a vertical cross-sectional view of a state in which a fluid pipe P to which a joint body 11 is connected to a tip portion is inserted into a wall through hole H from the back side of the wall. The tubular main body D of the wall penetration forming member A is inserted into the wall through hole H of the building wall W, and the elbow box B of the wall penetration forming member A is fixed to the fixing member 61 on the back side of the wall to form a fluid. It is a vertical cross-sectional view of a state in which the tip portion of the tube P is pulled out to the front side of the wall by a predetermined length. (A) and (b) are a front view and a vertical sectional view of the joint body 11, respectively. (A) and (b) are perspective views of the flange body 21 as viewed from different directions. (A) is a front view of the flange body 21, and (b) is a sectional view taken along line XX of (a). It is a perspective view of the joint body 11 connected to the tip end portion of the fluid pipe P drawn out from the wall surface, and the flange body 21 screwed to the joint body 11. It is a perspective view in the middle of screwing a flange body 21 to the 1st male thread part 13 of a joint body 11. FIG. 5 is a perspective view showing a state in which the flange body 21 screwed back to the wall through hole H and screwed to the first male thread portion 13 of the joint main body 11 is fixed to the tubular main body D. It is a vertical sectional view of a similar state. It is a perspective view which shows the relationship between the 2nd male thread part 14 of the joint body 11 and the decorative ring R ₁ . It is a perspective view of the state where the decorative ring R ₁ is screwed to the 2nd male thread portion 14 of the joint body 11. It is a vertical cross-sectional view of the state in which the flange body 21 and the decorative ring R ₁ are assembled to the joint body 11, and the right-handed "residual torsional force T ₁ " is applied to the joint body 11. It is a vertical cross-sectional view of the state in which the counterclockwise "residual torsional force T ₁ " is applied to the joint body 11 in the same assembled state. It is a comparative figure which shows the relative movement direction of a flange body 21 and a decorative ring R ₁ with respect to a joint body 11 in a state where "residual torsional force T ₁ (T ₂ )" of clockwise rotation and counterclockwise rotation is applied to a joint body 11. It is a perspective view of the joint body 11 connected to the tip end portion of the fluid pipe P drawn out from the wall surface, and the lock nut N and the flange body 21 screwed to the joint body 11. It is a perspective view of the state in which the flange body 21 is screwed to the first male thread portion 13 of the joint body 11 by the lock nut N so as not to be screwed back. Using the lock nut N, it is a longitudinal sectional view of a state where the flange member 21 and the decorative ring R ₁ is assembled to the joint body 11.

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

The first embodiment is an embodiment of a pipe joint according to the present invention. First, with reference to FIGS. 1 and 2, a fluid pipe P is inserted into a wall through hole H of a building wall W from the back side of the wall. The basic structure in which the faucets are connected to the joint body connected to the tip of the fluid pipe P on the wall surface side will be described. The wall penetrating portion forming member A is composed of a tubular main body D inserted into the wall through hole H of the building wall W and an elbow box B integrally assembled with the tubular main body D on the back side of the wall. The portion of the main body D that is inserted into the wall through hole H is a straight tubular portion, but the portion that protrudes from the back surface Wb of the wall is a bent bent portion Da that is formed on the open end surface of the bent portion Da. The elbow box B is integrally assembled with the fixed flat plate portion 1 provided integrally. The tubular main body D is inserted and arranged in the wall through hole H with a slight gap between it and the inner peripheral surface of the wall through hole H and slightly protruding from the wall surface Wa. .. Further, in FIG. 2, in order to arrange the heat insulating material on the back surface Wb of the building wall W, a pair of fixing materials 61 having a height corresponding to the thickness of the heat insulating material and having a predetermined interval are walls. It is fixed to the back surface Wb, and the fixed flat plate portion 1 of the tubular main body portion D is fixed to the pair of fixing members 61 via a plurality of screws 71. Therefore, in the tubular main body D inserted into the wall through hole H of the building wall W, one end on the back side of the wall is fixed to the pair of fixing members 61 via the fixed flat plate portion 1, and the other end on the front side of the wall. Has a non-fixed free-end structure.

Grooves 2 (see FIG. 6) are formed in the tubular main body D of the wall-penetrating portion forming member A at four locations equally divided along the circumferential direction along the longitudinal direction. A joint body 11 described later is connected to the tip of the fluid pipe P, and the portion of the groove 2 on the wall surface Wa side is screwed to the joint body 11 at the tip of the fluid pipe P on the wall surface Wa. It serves as a pilot hole for the screw 72 when the flange body 21 to be worn is fixed to the tubular main body D. It should be noted that, on the outer peripheral surface of the portion of the tubular main body D other than the predetermined length on the bent portion Da side, a cut 3 for cutting the tubular main body D corresponding to the wall thickness of the building wall W (FIG. 1) are formed at a constant pitch.

Since the joint body 11 and the flange body 21 constituting the pipe joint C are formed separately, the flange body 21 can be separated from the joint body 11. Therefore, as shown in FIG. 1, the flange body 21 is separated from the joint body 11, and the joint body 11 is connected to the tip of the fluid pipe P made of a resin pipe having a large flexural rigidity. The fluid pipe P is inserted into the elbow box B and the tubular main body D from the back side of the wall, and the joint main body 11 is the tubular main body as shown by the alternate long and short dash line in FIG. In the final installation state fixed to the portion D, a part thereof is inserted and arranged inside the tubular main body D in a state of protruding from the tip surface of the tubular main body D. In this way, with the joint main body 11 connected to the tip of the fluid pipe P, the fluid pipe P can be inserted into the tubular main body D, so that the piping work becomes easy. In addition, in FIG. 2, 4 and 5 show the surface of the elbow box B facing the back surface Wb of the wall and the fluid pipe insertion hole formed in the bottom surface, respectively, in order to insert the fluid pipe P.

As shown in FIGS. 3 and 6, the pipe joint C is assembled to the joint main body 11 connected to the tip of the fluid pipe P and the joint main body 11 by screwing, and is attached to the tubular main body D. It is composed of a flange body 21 that is fixedly attached to a free-end tip portion, and the flange body 21 is fixed to a wall surface Wa in a state facing the wall surface Wa in the tubular main body D. By being pressed, it comes into close contact with the wall surface Wa. The joint body 11 is a tubular member, and a connecting portion 12 connected to the fluid pipe P is formed in a portion on the back side of the wall divided in half along the axial direction, and the front side of the wall is divided in two along the axial direction. On the outer peripheral surface of the portion, the first and second male screw portions 13 and 14, respectively, are formed in a stepped shape in different portions along the axial direction, and an annular packing groove formed in the step portion of each of the male screw portions 13 and 14. A ring-shaped watertight packing 16 is fitted into the 15 and a female screw portion 17 to which faucets are attached is formed on the inner peripheral surface of the wall surface side divided into two along the axial direction.

Here, the first male threaded portion 13 formed on the joint body 11 is formed by a left-handed screw, and the second male-threaded portion 14 is formed by a right-handed screw, and the first and second male-threaded portions 13, 14 respectively. Are in a reverse screw relationship with each other. The outer diameter of the first male threaded portion 13 is formed to be slightly larger than the outer diameter of the second male threaded portion 14, and the end surface of the first male threaded portion 13 on the side of the second male threaded portion 14 is inside the flange body 21. The annular contact portion 31 on the peripheral side comes into contact with the contact restricting portion 18 to stop the screwing. The joint body 11 is made of metal, and the flange body 21 is made of resin.

As shown in FIGS. 4 to 6, the flange body 21 is formed in a tubular shape as a whole, and is screwed onto the inner peripheral surface of the first male threaded portion 13 composed of the left-handed thread of the joint body 11. A tubular body portion 23 in which a female threaded portion 22 made of a screw is formed, and a link thick plate shape that projects outward in the radial direction and is integrally formed at an end portion on the wall front side along the axial direction of the tubular body portion 23. It is composed of a flange plate portion 24 of the above. The flange plate portion 24 is formed at a position displaced in the axial direction with respect to the tubular body portion 23, so that the space on the inner peripheral side of the flange plate portion 24 is the second male thread portion 14 of the joint body 11. A lock nut arrangement space for arranging a lock nut N, which will be described later, which also has a function of preventing the flange body 21 screwed to the first male screw portion 13 of the joint body 11 from loosening. It is 28. An annular groove 25 into which the tip of the tubular main body D is inserted is formed on the back surface side of the flange plate portion 24 (the side facing the wall surface Wa in the arranged state), and the front surface of the flange plate portion 24. A ring plate-shaped front protruding portion 29 having an outer diameter smaller than the outer diameter of the flange plate portion 24 is integrally provided on the side, and a slightly inner portion of the annular groove portion 25 in the front protruding portion 29 is provided. In order to fix the entire flange body 21 to the tubular main body D by using a plurality of screws 72, a total of four screw insertion holes 26 penetrating the screws 72 are evenly spaced along the circumferential direction. It is formed through the flange.

Grooves 2 (see FIG. 6) are formed in the tubular main body D of the wall penetrating portion forming member A at four locations equally divided along the circumferential direction, whereby the tubular main body is formed. The same number of ridges 6 as the groove 2 are projected in the longitudinal direction inside the portion D, and when the tip of the tubular main body D is inserted into the annular groove 25 of the flange body 21, each ridge is formed. Since the portion 6 and the outer peripheral portion of the tubular body portion 23 of the flange body 21 interfere with each other, each interference avoidance groove portion 30 is formed in the tubular body portion 23 along the axial direction.

The outer peripheral portion of the flange plate portion 24 of the flange body 21 is an annular shape having a rectangular cross section that is opened in two directions on the outer side in the radial direction (the overhanging direction of the flange plate portion 24) and the back surface side facing the wall surface Wa in the arranged state. The recess 27 is formed. As shown in FIG. 3, each screw 72 inserted into each screw insertion hole 26 of the flange body 21 after the female thread portion 22 of the flange body 21 is screwed onto the first male thread portion 13 of the joint body 11. Is screwed into each groove 2 that functions as a screw pilot hole at the tip of the tubular body D, so that the flange body 21 is integrally attached to the tip of the tubular body D, and the flange plate thereof. The close contact surface 24a of the portion 24 is brought into close contact with the wall surface Wa.

At the end of the flange body 21 on the inner peripheral surface of the tubular body portion 23 on the lock nut arrangement space 28 side, the female threaded portion 22 of the flange body 21 is screw-rotated with respect to the first male threaded portion 13 of the joint body 11. When the flange body 21 is screwed to the joint body 11, the annular contact portion 31 that comes into contact with the contact restricting portion 18 of the joint body 11 and stops the screwing of the flange body 21. It is formed.

As shown in FIGS. 6 and 7, the flange body 21 is screwed to the joint body 11 connected to the tip of the fluid pipe P by a predetermined length from the wall through hole H of the building wall W. In many cases, the flange body 21 is pulled out, and in this case, the flange body 21 is screwed to the joint body 11 at the tip of the fluid pipe P pulled out from the wall through hole H of the building wall W by a predetermined length, and then pulled out. When the flange body 21 is fixed to the tip of the tubular main body D by a plurality of screws 72 after pushing the removed fluid pipe P back into the wall through hole H, when the screw 72 is rotated. Due to the pressing force, the contact surface 24a of the flange plate portion 24 of the flange body 21 is pressed and brought into close contact with the wall surface Wa with a large force. As a result, the wall surface Wa, the wall surface facing surface 27a facing the wall surface Wa in the annular recess 27, and the peripheral surface 27b thereof are formed into an annular caulking material K that is opened radially outward of the flange body 21. Filling groove G (see FIG. 12) is formed.

Further, the decorative ring R ₁ is made of resin, and as shown in FIGS. 10 to 12, a second male thread portion 14 composed of a right-hand thread of the joint body 11 is formed on the inner peripheral surface of the short cylinder body portion 41. A female screw portion 42 also composed of a right-hand screw to be screwed is formed, and a decorative ring portion 43 and a contact ring portion 44 are integrally formed at the front and rear along the axial direction of the short cylinder main body 41, respectively. Has been done. When the female threaded portion 42 of the decorative ring R ₁ is screwed to the second male threaded portion 14 of the joint body 11, the female threaded portion 42 of the decorative ring R1 is screwed to the inner space 46 of the abutting ring portion 44 and to the first male threaded portion 13 of the joint body 11. The front protruding portion 29 of the flange body 21 is inserted, and the rear end surface of the contact ring portion 44 is in contact with the front end surface of the flange plate portion 24 of the flange body 21. The rear end surface of the abutment ring 44, have a ring-shaped watertight gasket 45 is fitted, by the watertight packing 45 is compressed and deformed, the contact portion between the flange member 21 and the decorative ring R ₁ It is watertight.

Next, with reference to FIGS. 6 to 12, a piping operation for screwing the flange body 21 and the decorative ring R ₁ to the joint body 11 connected to the tip of the fluid pipe P will be described. First, as shown in FIG. 6, in order to facilitate the screwing operation, the fluid pipe P is pulled out from the inside of the wall through hole H by a predetermined length, and in this state, as shown in FIGS. 7 to 9. When the annular contact portion 31 of the flange body 21 comes into contact with the contact restricting portion 18 of the joint body 11, the flange body 21 rotates counterclockwise with respect to the first male thread portion 13 of the joint body 11 until the flange body 21 cannot be screwed. Let it screw.

In this state, the fluid pipe P drawn out from the wall through hole H is pushed back into the wall through hole H, and each screw insertion hole 26 of the flange body 21 and the tubular main body portion of the wall through portion forming member A are pushed back. Matching each groove 2 of D, the screw 72 inserted through the screw insertion hole 26 is screw-rotated, and the screw thread is bitten into the surface layer on the inner surface side of the ridge 6 forming the groove 2. By doing so, the flange body 21 is fixed to the tubular main body D via a plurality of screws 72. As a result, the flange body 21 is indirectly (relatively) fixed to the building wall W.

Here, in a state where the flange body 21 is screwed to the first male thread portion 13 of the joint body 11 so as not to be screwed, each screw insertion hole 26 of the flange body 21 and each groove portion 2 of the tubular body portion D Since there is a low probability that and are accidentally matched with each other, it is necessary to rotate the flange body 21 in either direction by a predetermined angle with respect to the fixed tubular main body D to bring about the matching state. In the first embodiment, in order to prevent the screwed state from loosening, the flange body 21 is rotated counterclockwise to bring it into the matching state. Therefore, since the fluid pipe P is twisted in the counterclockwise direction when viewed from the wall surface Wa, the flange body 21 is fixed to the tubular main body D, and the fluid pipe P is connected to the wall surface Wa from the wall surface Wa. Looking at it, the clockwise rotation "residual torsional force T ₁ " remains. When the flange body 21 is rotated clockwise when viewed from the wall surface Wa to bring it into the matching state, the flange body 21 is screwed back to the first male thread portion 13 of the joint body 11 and comes into contact with the joint body 11. Since the restricting portion 18 and the annular contact portion 31 of the flange body 21 are separated from each other, this operation is a prohibited operation.

Here, in a state where the fluid pipe P is fixed to the tubular main body D via the flange body 21, the cause of the "residual torsional force" remaining in the fluid pipe P is the joint main body in order to obtain the above-mentioned match. In addition to the case where the flange body 21 is rotated counterclockwise with respect to 11, when the fluid pipe P is returned to the wall through hole H, a twisting force is suddenly applied and remains, or a "twisting habit" is generated from the beginning. It is also possible that the fluid pipe P remains, and the direction of the "residual torsional force" may not only be rotated clockwise but also counterclockwise.

When the flange body 21 is fixed to the tip of the tubular main body D by a plurality of screws 72, the flange plate portion 24 of the flange body 21 is brought into close contact with the flange plate portion 24 due to the pressing force during rotation of the screws 72. The surface 24a is pressed and brought into close contact with the wall surface Wa of the building wall W with a large force.

After that, as shown in FIGS. 10 to 12, the decorative ring R ₁ is screwed to the second male threaded portion 14 of the joint body 11 protruding from the wall surface Wa by rotating the decorative ring R ₁ clockwise. The rear end surface of the contact ring portion 44 of ₁ abuts on the contact surface 24a of the front end surface of the flange plate portion 24 of the flange body 21, and the watertight packing 45 on the side of the decorative ring R ₁ existing at the contact portion with each other. As a result, watertightness is achieved between the flange body 21 and the decorative ring R ₁ . Finally, the caulking material K is filled in the annular filling groove G formed between the flange body 21 and the wall surface Wa to stop water between the flange body 21 and the wall surface Wa.

Here, as described above, when the flange body 21 is rotated counterclockwise and screwed to the first male thread portion 13 of the joint body 11 until it cannot be screwed, the fluid pipe P is seen from the wall surface Wa. Since it is twisted in the counterclockwise direction, as shown in FIGS. 12 and 14, in a state where the flange body 21 is fixed to the tubular main body D, the fluid pipe P is on the right when viewed from the wall surface Wa. The "residual torsional force T ₁ " of rotation remains. Since the "residual torsional force T ₁ " acts so that the flange body 21 is screwed with respect to the first male thread portion 13 of the joint body 11, the flange body 21 cannot rotate relative to the joint body 11. As a result, the non-screwable state is maintained, and the contact surface 24a of the flange plate portion 24 is pressed against the wall surface Wa by the "residual torsional force T ₁ ", and as a result, the joint body 11 is dressed. The ring R _{1 is} also unable to rotate relative to each other, and the state of being in close contact with and in contact with the flange plate portion 24 of the flange body 21 is maintained. Therefore, neither the flange body 21 nor the decorative ring R ₁ is loosened.

On the other hand, when the counterclockwise "residual twisting force T ₂ " remains in the fluid pipe P due to the existence of the "twisting habit" of the fluid pipe P from the beginning, it is shown in FIGS. 13 and 14. As described above, the flange body 21 and the decorative ring R ₁ try to move in the wall front direction Q ₁ and the wall back direction Q ₂ , respectively, but the flange body 21 and the decorative ring R ₁ are in a reverse screw relationship with each other. are screwed into each of the first and second male screw portions 13 and 14 of the joint body 11, moreover the decorative ring R _1, since in contact with the said flange body 21, and current state is maintained, the Neither the flange body 21 nor the decorative ring R ₁ is loosened.

In the above piping construction method, the fluid pipe P is pulled out from the wall through hole H, and the flange body 21 is screwed to the joint body 11 connected to the tip of the fluid pipe P. There is an advantage that the screwing work of the body 21 becomes easy, but as shown in FIG. 2, the joint main body 11 connected to the tip of the fluid pipe P faces the wall surface Wa. It is also possible to screw the flange body 21 to 11.

The second embodiment is an embodiment of the "fixed body device" according to the present invention, and the second embodiment is the first male threaded portion 13 of the joint body 11 by using the lock nut N in the above-described first embodiment. The flange body 21'screwed to the above-mentioned feature portion is characterized in that the flange body 21'is screwed into a structure so as not to be screwed back. Only explain.

That is, as shown in FIGS. 15 to 17, the fluid pipe P is pulled out from the wall through hole H, and the flange body 21'is attached to the first male thread portion 13 of the joint body 11 connected to the tip end portion of the fluid pipe P. Lock nut N is attached to the second male threaded portion 14 of the joint body 11 so that the lock nut N abuts on the end surface of the annular contact portion 31 of the joint body 11 after being screwed to the joint body 11 so as to be screwed in. By screwing, the flange body 21'is prevented from being screwed back to the joint body 11. The contact ring portion 44'of the decorative ring R ₂ is arranged outside the flange plate portion 24'of the flange body 21'of the second embodiment, and the end surface of the contact ring portion 44' comes into contact with the wall surface Wa. Due to the structure, the projecting length of the flange plate portion 24'outward in the radial direction is shorter than that of the flange body 21 of the first embodiment.

As shown in FIG. 16, the fluid pipe P is inserted into the wall through hole H in a state where the flange body 21'threaded to the first male thread portion 13 of the joint body 11 cannot be screwed by the lock nut N. It is returned and the flange body 21'is fixed to the tubular main body D by using a plurality of screws 72. After that, the decorative ring R ₂ is screwed onto the second male threaded portion 14 of the joint body 11, and the rear end surface of the abutting ring portion 44'is pressed against the wall surface Wa. A watertight packing 51 is fitted in the annular groove formed on the rear end surface of the abutting ring portion 44', and when the rear end surface of the abutting ring portion 44' is pressed against the wall surface Wa, the watertight packing 51 is fitted. By compressing and deforming the packing 51, watertightness between the wall surface Wa and the rear end surface of the contact ring portion 44'is maintained.

In this way, by using the lock nut N, the flange body 21'is prevented from loosening with respect to the joint body 11 in advance when the flange body 21'is fixedly assembled to the tubular main body D. Therefore, in combination with the flange body 21'and the loosening screwing structure of the decorative ring R _{2 to} the first and second male threaded portions 13 and 14 of the reverse screw relationship formed on the joint body 11, the flange body The loosening of 21'can be prevented more reliably.

Further, the joint bodies 11 and 11'of Examples 1 and 2 correspond to the "fixed member body" in the invention of claim 4.

Further, in the above Examples 1 and 2, the first male threaded portion 13 to which the flange bodies 21 and 21'on the back side of the joint body 11 are screwed is a left-hand thread, and the decorative rings R ₁ and R on the front side are screwed. the second male screw portion _{14 2} is screwed is a right-hand thread, and the first male screw portion 13 of the back side to the right-hand thread, it is also possible to make the second male threaded portion 14 of the front side to the left-hand thread Is. As a result, since a person other than the contractor often recognizes a normal screw as a right-handed screw, there is an advantage that the decorative rings R ₁ and R ₂ can be prevented from being removed by mischief.

In any of the first and second embodiments, faucets are connected to the female thread portion 17 of the joint body 11.

Further, in each of the above Examples 1 and 2, an example in which the pipe joint C is horizontally arranged on the wall surface Wa while facing the wall surface Wa of the building wall W is given, but it penetrates the floor wall. It can also be applied to a pipe joint connected to a fluid pipe that is laid so as to stand up. Further, typical examples of building walls include outer walls, partition walls, floor walls and the like.

C: Pipe fitting
D: Cylindrical body
H: Wall through hole
N: Lock nut
P: Fluid pipe (pipe material)
R ₁ , R ₂ : Decorative ring (second screwing member)
T ₁ , T ₂ : Residual torsional force
W: Building wall Wa: Wall surface Wb: Wall back surface 11: Joint body (first screwing member, fixed body body, fixed member body)
13: 1st male threaded part 14: 2nd male threaded part 18: Contact restricting part of joint body 21, 21': Flange body (1st screwing member, fixing member)
24, 24': Flange plate part (fixed part)
31: An annular contact portion of the flange body

Claims (5)

A pipe connection portion to which a pipe material is connected is formed on one end side, and a joint body fixedly arranged with respect to a wall through hole formed in a building wall so that the other end side faces the wall surface and screwed to the joint body. It is a pipe joint composed of a screwing member to be formed.
In the joint body, the first and second male screw portions, which are in a reverse screw relationship with each other, are formed at positions shifted in the axial direction.
The screwing member is composed of a first screwing member that is screwed to one of the male screw portions to a state where it cannot be screwed, and a second screwing member that is screwed to the other male screw portion. It's made
The first screwing member has a fixing portion that is fixed relative to the building wall.
A pipe joint characterized in that the second screwing member screwed to the other male screw portion can come into contact with the first screwing member screwed to the one male screw portion or the building wall. .. A claim characterized in that a packing is interposed between the first male threaded portion and the second male threaded portion to stop water between the first screwed member or the second screwed member and the joint body. Item 2. The pipe fitting according to item 1. The pipe joint according to claim 1 or 2, wherein the joint body has a contact restricting portion that abuts the first screwing member to regulate further screwing. It is a fixed member device including a fixed member main body fixedly arranged with respect to a wall through hole formed in a building wall and a screwed member screwed to the fixed member main body.
The main body of the member to be fixed is connected to the tip of the pipe material that is pulled into the wall through hole from the back of the building wall, and the first and second male screw portions that are in a reverse screw relationship with each other are displaced in the axial direction. Formed in position,
The screwing member is composed of a first screwing member that is screwed to one of the male screw portions to a state where it cannot be screwed, and a second screwing member that is screwed to the other male screw portion. It's made
The first screwing member has a fixing portion that is fixed relative to the building wall.
The second screwed member screwed to the other male threaded portion can be brought into contact with the first screwed member screwed to the one male threaded portion or the building wall to be fixed. Member device. The first and second male threaded portions, which are in a reverse screw relationship with each other, are formed at positions shifted in the axial direction, and are connected to the tip of the pipe material drawn from the back of the wall into the wall through hole of the building wall. Body body and
A fixing member having a female threaded portion screwed to one of the male threaded portions and a fixing portion fixed to a structure such as a building.
Each of the male threaded portions includes a lock nut having a female threaded portion screwed to the other male threaded portion.
The fixing member screwed to the one male screw portion in a non-screwable state is provided with a lock nut screwed to the other male screw portion so as to abut, and the fixing member is provided with the lock nut. A fixed body device characterized in that it can be fixed to the structure in a state where the nuts are in contact with each other.

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