JP6588225B2 - Piping material connector and piping material installation structure - Google Patents

Description

  The present invention relates to a piping material connector for connecting a piping material to a through hole of a body to be connected.

  For example, in order to connect pipe materials such as pipes and water stopcocks in a water-stopped state to through-holes drilled in the tubular wall of pipe materials such as drain pipes and peripheral walls such as wiring and piping boxes as connected bodies Various pipe material connectors are used.

  Patent Document 1 discloses a water faucet (piping material connector) attached to a branch port (through hole) drilled in a fluid pipe (connected body) such as a water pipe. The tubular fitting (2) of the water faucet (1) is composed of an inner cylinder (11) and an outer cylinder (12). The outer cylinder (12) includes a lower small-diameter cylinder part (12a) that is slidably fitted to the outer periphery of the inner cylinder (11), and an annular flange part that protrudes outward from the upper end part of the small-diameter cylinder part (12a). 13) and an upper large-diameter cylindrical portion (12b) provided continuously through the same. A tapered surface or a rounded surface (15) having a smaller diameter toward the lower side is formed on the outer periphery of the lower end portion of the small diameter cylindrical portion (12a). An attachment screw (17) for attaching a piping material such as a water stopper (16) is formed on the inner surface of the large diameter cylindrical portion (12b). The inner cylinder (11) includes a first inclined surface (21) having a large diameter on the outer periphery of the lower end and a second inclined surface (22) inclined upward from the lower end of the first inclined surface (21). An annular convex portion (20) having the shape is formed. The first inclined surface (21) of the annular protrusion (20) is inclined in substantially the same direction as the second inclined surface (22) and supports the lower end surface of the annular protrusion (23) of the rubber ring (3). The tapering ring (4) divided by one circumference is fitted and arranged. The taper ring (4) normally has an outer diameter smaller than that of the branch port (9). However, when the taper ring (4) is pushed by the rubber ring (3) and moved downward along the first inclined surface (21), the outer diameter is increased. The diameter is larger than the branch port (9) and is received by the second inclined surface (22). When connecting the water faucet (1) of this patent document 1 to the fluid pipe (6), the lower small diameter cylinder part (12) of the outer cylinder (12) is placed inside the rubber ring (3) attached to the branch port (9). The rubber ring (3) is pressed between the lower small-diameter cylindrical portion (12a) of the outer cylinder (12) and the branch port (9) by pressing (pressing) 12a), and the fluid is stopped. And the annular protrusion (23) of the rubber ring (3) will bend outward when the lower small diameter cylindrical portion (12a) of the outer cylinder (12) is press-fitted. Further, when the inner cylinder (11) is pulled up, the taper ring (4) is moved down by the first inclined surface (21) of the inner cylinder (11) at the same time as the annular projection (23) of the rubber ring (3) hits. However, the annular protrusion (23) of the rubber ring (3) is pressed against the pipe inner surface edge of the branch port (9) until the diameter is expanded and received by the second inclined surface (22). In addition, the code | symbol of patent document 1 was shown in ().

Japanese Patent Laid-Open No. 6-26080

  In the water faucet of Patent Document 1, the outer ring (12) is pushed into the rubber ring (3) attached to the branch port (9), so that the rubber ring (3) is placed on the end surface of the branch port (9). Press contact and form a water stoppage state. However, in the water faucet mechanism of Patent Document 1, if the outer diameter of the outer cylinder (12) does not sufficiently correspond to the diameter of the branch port (9) drilled in the fluid pipe (6), both There may be a problem that a gap is generated between the two and the water cannot be sufficiently stopped, or that it is difficult or impossible to push the outer cylinder (12) into the branch port (9). Furthermore, in the water faucet of Patent Document 1, the tapered ring (4) compresses and deforms the rubber ring (3) so as to bulge outward, and the annular protrusion (23) of the rubber ring (3) is formed at the branch port. The water faucet is fixed with respect to the branch port (9) by pressing the tube inner surface edge of (9). However, in the case of the cylindrical fluid pipe (6), since the surface of the fluid pipe (6) is curved in a round shape, the edge of the branch port (9) is not on the same plane, and the branch port (9) In the circumferential direction, the distance between the pipe inner surface edge and the taper ring (4) is not uniform. In other words, the annular convex portion (23) cannot be stably consolidated to the pipe inner surface edge along the circumferential direction of the branch port (9). Therefore, there is a possibility that there is a gap between the annular convex portion (23) and the inner rim of the pipe and the water stoppage is insufficient, or the water faucet is wobbled with respect to the fluid pipe (6). It was.

  The present invention has been made in order to solve the above-described problems, and the object thereof is to easily install a through-hole formed in a body to be connected, and to provide a piping material in a more reliable water stop state. By providing a piping material connector that can connect to a body to be connected and a piping structure using the piping material connector.

The piping material connector according to claim 1 is a piping material connector for connecting a piping material to a through-hole of a body to be connected,
A connecting part for connecting the piping material to one end, a cylindrical part connected to the connecting part and extending in the axial direction, a screw part formed on the outer surface of the cylindrical part, and a cylindrical part on the other end side of the screw part A connector body having a flange portion projecting outward from the
A nut body that is screwed to the screw portion and can be screwed toward the flange portion;
A spacer body extrapolated to the cylindrical portion between the nut body and the flange portion and slidable in the axial direction of the cylindrical portion;
Elastically bent so that the intermediate part bulges only outward in the radial direction when it is inserted into the cylindrical part between the spacer body and the flange part and pressed by the spacer body and compressed in the axial direction. A deformable waterstop, and
The outer surface between the screw portion and the flange portion of the cylindrical portion is provided with an attachment portion for attaching the waterstop, and the attachment portion is attached to the inner surface of at least the intermediate portion of the waterstop. To keep the waterstop
With the waterstop inserted in the through-hole of the body to be connected, the nut body is tightened so that the outer surface of the waterstop is pressed against the end face of the through-hole in the waterstop state .
Between the attachment portion and the flange portion, a reduced diameter portion formed in a tapered shape so as to continuously reduce the diameter from the other end of the attachment portion is provided .

請 Motomeko second pipe member connecting device according to the piping member a piping material connector for connecting the through hole of the object to be connected,
A connecting portion for connecting the piping material to one end, a cylindrical portion that is connected to the connecting portion and extends in the axial direction, a screw portion formed on the outer surface of the cylindrical portion, and the other end side of the screw portion And a connector main body having a flange portion projecting outward from the cylindrical portion,
A nut body screwed into the screw portion and capable of screwing toward the flange portion;
A spacer body that is extrapolated to the tubular portion between the nut body and the flange portion and is slidable in the axial direction of the tubular portion;
When the cylindrical portion is extrapolated between the spacer body and the flange portion and is pressed by the spacer body and compressed in the axial direction, the intermediate portion bulges only radially outward. A waterstop body that can be elastically bent and deformed,
The other end of the cylindrical portion is provided with a reduced diameter portion formed in a tapered shape that is reduced in diameter toward the other end side, adjacent to the flange portion.
The nut body is tightened in a state where the waterstop is inserted into the through-hole of the connected body, whereby the other end of the waterstop is placed in a recess between the reduced diameter portion and the flange portion. An intermediate portion of the waterstop bulges so as to enter, and the outer surface of the waterstop is pressed against the end face of the through hole in a waterstop state.

The piping material connector according to claim 3 is the piping material connector according to claim 1, wherein the spacer body includes a pressing surface that presses the waterstop body in the axial direction along with the screwing of the nut body, and the connected member. A contact surface that contacts the outer surface of the peripheral wall of the body is provided.
According to a fourth aspect of the present invention, there is provided the piping material connector according to the third aspect, wherein the contact surface is configured to contact the peripheral edge of the through hole over the circumferential direction of the through hole. It is characterized by.

The piping material connector according to claim 5 is the piping material connector according to claim 4 , wherein the body to be connected is a cylindrical hollow body, and the contact surface is a curved shape of the periphery of the through hole of the body to be connected. It is curved so that it may follow.

The piping material connector according to claim 6 is the piping material connector according to any one of claims 1 to 5 , wherein when the waterstop is compressed, the waterstop is prevented from getting over the flange portion. It further comprises a jump-over prevention means.

The piping material connector according to claim 7 is the piping material connector according to claim 6 , wherein the overpass preventing means includes a flange portion having a diameter greater than or equal to the outer diameter of the waterstop body. To do.

The piping material installation structure according to claim 8 is arranged by inserting the piping material connector according to any one of claims 1 to 7 into a through-hole drilled in a peripheral wall of the body to be connected. The water stop body of the material connecting tool bulges so that the outer surface of the water stop body comes into pressure contact with the end face of the through hole in a water stop state, and the pipe material is connected to the connection portion of the pipe material connecting tool.

  According to the piping material connector of one aspect of the present invention, the spacer body and the flange portion compressively deform the water stop body in the axial direction by the screwing of the nut body in a state where the water stop body is inserted into the through hole of the connected body. At the same time, the outer surface of the water stop body is pressure-bonded to the end surface of the through hole in a water stop state by expanding the intermediate portion of the water stop body in the radial direction. Since the waterstop extends in the axial direction in the through hole, the intermediate portion of the waterstop expands with respect to the end surface of the through hole, so that the outer surface of the waterstop and the end surface of the through hole are spaced apart in the circumferential direction of the through hole. Consolidate without. Therefore, the piping material connector is fixed to the body to be connected by forming a more reliable water stop state. Furthermore, the piping material connector is easily inserted into the through hole of the connected body by inserting the piping material connector into the through hole and screwing the nut body to bulge the water blocking body in the direction of the end surface of the through hole. It is possible to fix to. That is, since the outer diameter of the water stop body varies so as to correspond to the diameter of the through-hole, strict accuracy is not required for the dimension shape of the water stop body and the connection portion main body. Therefore, the piping material connector of the present invention can be easily installed in the through-hole drilled in the connected body, and the piping material can be connected to the connected body in a more reliable water stop state. .

  According to the piping material connector of a further aspect of the present invention, in addition to the effects of the above invention, the spacer body has a pressing surface that presses the water stop and a contact surface that contacts the outer peripheral surface of the connected body. Is provided. As a result, the piping material connector is inserted into the through-hole until the contact surface of the spacer body comes into contact with the outer peripheral surface of the body to be connected, and the nut body is screwed to move the spacer body and the nut body in the axial direction. While the position is fixed, the water stop body can be pressed by the pressing surface to bulge in the radial direction while pulling the connector main body and the water stop body toward one end side of the connected body. That is, the nut body can be operated in a stable posture with the abutment surface directed to the outer peripheral surface of the peripheral body of the connected body, so that the installation work of the piping material connector can be easily performed.

  According to the pipe material connector of a further aspect of the present invention, in addition to the effects of the above invention, the contact surface abuts the periphery of the through hole over the circumferential direction of the through hole, so that the spacer body and the connected body It is possible to suppress a gap between the two. Thereby, the waterstop can be protected from the outside without being exposed to the outside.

  According to the piping material connector of a further aspect of the present invention, in addition to the effects of the above invention, the curved contact surface of the spacer body contacts the entire periphery of the through hole of the cylindrical connected body. Due to this contact relationship, when the nut body is rotated, it is possible to suppress the rotation of the connecting portion main body and the spacer body, and it is possible to stably perform the installation work of the piping material connector on the cylindrical body. .

  According to the pipe material connector of a further aspect of the present invention, in addition to the effects of the above invention, when the waterstop body is compressed in the axial direction by the climbing prevention means, the waterstop body moves over the flange portion and shifts in the axial direction. This can be prevented. Thereby, a water stop can be pressed more reliably and can be compressed and deformed.

  According to the pipe material connector of a further aspect of the present invention, in addition to the effects of the above invention, the diameter of the flange portion is larger than the outer diameter of the water stop body, so that the water stop body is effectively engaged in the axial direction by the flange portion. Can be stopped.

  According to the pipe material connector of the further form of the present invention, in addition to the effects of the above invention, the reduced diameter portion is provided at a position adjacent to the flange portion of the connector main body. That is, when the waterstop is pressed against the flange portion by the spacer body, the other end of the waterstop is elastically deformed along the outer surface of the reduced diameter portion. In other words, the deformation of the other end of the waterstop is guided radially inward by the reduced diameter portion, so that the bulging of the intermediate portion is assisted and the other end of the waterstop is prevented from getting over the flange portion.

  The piping material installation structure according to one aspect of the present invention can exhibit the effects of the above invention as a piping material installation structure. That is, the piping material installation structure of the present invention can easily install the piping material connector to the through-hole drilled in the connected body, and more reliably through the piping material connector. The piping material is connected to the body to be connected in the water stop state.

BRIEF DESCRIPTION OF THE DRAWINGS (a) The schematic perspective view seen from the front of the piping material connection tool of one Embodiment which concerns on this invention, (b) The schematic perspective view seen from the back surface. The (a) front view, (b) rear view, (c) top view, and (d) side view of the piping material connector of FIG. It is AA sectional drawing of the piping material connection tool of FIG. 2, (a) The form which a water stop is an initial shape is shown, and (b) The form which the water stop is elastically deformed is shown. The disassembled perspective view of the piping material connection tool of FIG. (A) The schematic perspective view seen from the front of the connector main body of the piping material connector of FIG. 4, (b) The schematic perspective view seen from the back surface. (A) front view, (b) rear view, (c) side view, and (d) BB sectional view of the connector main body of FIG. The (a) perspective view, (b) front view, (c) back view, and (d) side view of the nut body of the piping material connector of FIG. 4A is a schematic perspective view as seen from the front, (b) is a schematic perspective view as seen from the back, (c) is a front view, (d) is a plan view, and (e) is a side view. (F) CC sectional drawing and (g) DD sectional drawing. The (a) perspective view, (b) front view, (c) side view, and (d) EE sectional view of the water stop body of the piping material connector of FIG. The schematic perspective view of the piping material installation structure by the piping material connector of one Embodiment which concerns on this invention. The (a) side view and (b) top view of the piping material installation structure of FIG. (A) FF sectional drawing and (b) GG sectional drawing of the piping material installation structure of FIG. The schematic diagram which shows the process of constructing the piping material installation structure of FIG. The disassembled perspective view of the piping material connector of another embodiment (2nd Embodiment) which concerns on this invention. 14A is a schematic perspective view as viewed from the front, (b) is a schematic perspective view as viewed from the back, (c) is a front view, (d) is a side view, and (e) H-. H sectional drawing. The schematic perspective view of the piping material installation structure by the piping material connector of another embodiment (2nd Embodiment) which concerns on this invention. The (a) top view and (b) II sectional view of the piping material installation structure of FIG. The disassembled perspective view of the piping material connector of another embodiment (3rd Embodiment) which concerns on this invention. The (a) top view of the piping material installation structure of FIG. 18, and (b) JJ sectional drawing.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the shape of each figure referred in the following description is a conceptual diagram or a schematic diagram for explaining a suitable shape dimension, and a dimension ratio etc. do not necessarily correspond with an actual dimension ratio. That is, the present invention is not limited to the dimensional ratio in the drawings.

[First Embodiment]
The piping material connector 100 of the present embodiment is fixed to a through hole 13 formed in the peripheral wall 12 of the drain pipe 11 that is a connected body, and the pipe 15 and the drain pipe 11 as the piping material are in a water-stopped state. Used to connect. However, description of this embodiment is only an illustration of this invention, and the use of this invention is not limited to the said embodiment.

  First, with reference to FIG. 1 thru | or FIG. 3, the structure of the piping connection tool 100 of one Embodiment of this invention is demonstrated. 1A and 1B are schematic perspective views of a piping material connector 100. FIG. 2A to 2D are a front view, a rear view, a side view, and a plan view of the piping material connector 100. FIGS. 3A and 3B are a normal AA cross-sectional view of the piping material connector 100 and a cross-sectional view of the deformed form thereof. FIG. 4 is an exploded perspective view of the piping material connector 100.

  The piping material connector 100 of this embodiment is a hollow cylindrical body that extends in the axial direction from one end to the other end as a whole. The end on the front side (the inside of the connected body) of the piping material connector 100 was defined as the other end, and the end on the back side (the piping material side) was defined as one end. As shown in FIGS. 1 and 2, the piping material connector 100 is connected to the connector main body 110 extending in the axial direction, the nut body 120 screwed to the connector main body 110, and the other end side of the nut body 120. It comprises a spacer body 130 externally attached to the tool body 110 and an elastically deformable water stop body 140 attached to the connection tool body 110 on the other end side of the spacer body 130.

  In the piping material connector 100, as shown in FIG. 3A, a water stop body 140, a spacer body 130, and a nut body 120 are sequentially extrapolated from the other end side with respect to the outer surface of the connection portion main body 110. ing. Further, a through hole penetrating from one end to the other end is defined by the inner wall of the connector main body 110, and the one end surface and the other end surface are opened with a predetermined diameter. Then, as shown in FIG. 3B, when the nut body 120 is screwed in the axial direction from the normal state of FIG. 3A, the spacer body 130 is advanced to the other end side and stopped by the spacer body 130. The water body 140 is pressed to the other end side. That is, the spacer body 130 is displaced in conjunction with the screwing movement of the nut body 120 with respect to the connection portion main body 110. As a result, the spacer body 130 presses the water stop body 140 toward the other axial end side, and the water stop body 140 is elastically compressed in the axial direction and bulges in the radial direction.

  In the piping material connector 100, as shown in FIG. 4, the connecting portion main body 110, the nut body 120, the spacer body 130, and the water stop body 140 are configured as separate members, and these are combined with each other to connect the piping material. A tool 100 is configured. 1 to 3, the configuration in which the respective members are combined in advance is shown as the normal state of the piping material connector 100. However, as shown in FIG. Included in the material connector.

  Hereinafter, with reference to FIG. 5 thru | or FIG. 9, each component of the piping connection tool 100 of this embodiment is demonstrated in detail. 5A and 5B are perspective views of the connection body main body 110, and FIGS. 6A to 6D are a front view, a rear view, a side view, and BB of the connection body main body 110. FIG. It is sectional drawing. 7A to 7D are a perspective view, a front view, a rear view, and a side view of the nut body 120. 8A to 8G are a perspective view from the front of the spacer body 130, a perspective view from the back, a front view, a plan view, a side view, a CC sectional view, and a DD sectional view. FIGS. 9A to 9D are a perspective view, a front view, a side view, and an EE cross-sectional view of the waterstop body 140.

  As shown in FIGS. 5 and 6, the connecting portion main body 110 is formed as a hollow cylindrical body that extends linearly from one end to the other end, and defines a through hole that penetrates in the axial direction from one end to the other end. The connection portion main body 110 has a connection portion 111 for connecting a pipe material (tube 15) at one end, a tubular portion 112 that is connected to the connection portion 111 and extends to the other end side in the axial direction, and the tubular shape. A flange portion 116 that protrudes radially outward from the other end of the portion 112 is provided.

  The connecting portion 111 linearly extends in a hollow cylindrical shape in the axial direction, and has an opening with a diameter that can be connected by extrapolating the tip of the pipe 15 that is a piping material. That is, the inner diameter of the connecting portion 111 corresponds to the outer diameter of the tube 15. In addition, it is preferable that the pipe | tube 15 is connected to the connection part 111 via sealing members (not shown), such as packing.

  The cylindrical portion 112 is a hollow cylindrical shape whose diameter is larger than that of the connecting portion 111 and extends in the axial direction. On the outer surface of the cylindrical portion 112, a screw portion 113 for screwing the nut body 120 is formed over a predetermined region near the center in the axial direction. An attachment portion 114 for attaching the waterstop 140 is disposed on the outer surface of the cylindrical portion 112 on the other end side of the screw portion 113. The attachment portion 114 is slightly larger in diameter than the diameter of the proximal end portion (the screw portion 113 is formed on the outer surface) of the cylindrical portion 112. In addition, the attachment portion 114 has an outer diameter that substantially matches the inner diameter of the waterstop body 140 or slightly smaller than the inner diameter of the waterstop body 140. When the inner surface of the water stop body 140 is in close contact with the attachment portion 114, the water stop body 140 is held by the connection portion main body 110. Further, a reduced diameter portion 115 is formed at a location adjacent to the flange portion 116 of the cylindrical portion 112. The reduced diameter portion 115 is formed between the flange portion 116 and the attachment portion 114, and is configured in a tapered shape so as to continuously reduce the diameter from the other end of the attachment portion 114. The reduced diameter portion 115 functions as a climbing prevention means for preventing the waterstop 140 from climbing over the flange.

  The flange portion 116 protrudes radially outward from the distal end of the reduced diameter portion 115 of the cylindrical portion 112 with a predetermined width, and is formed as a thin plate body having an annular shape when viewed from the front. In the present embodiment, the diameter of the flange portion 116 is determined to be substantially the same as or slightly larger than the outer diameter of the waterstop body 140. That is, it is preferable that the diameter of the flange portion 116 is equal to or larger than the outer diameter of the waterstop body 140 so that the flange portion 116 functions as a means for preventing overcoming. In other words, it is preferable that the overhang width of the flange portion 116 is configured to be equal to or greater than the thickness of the meat portion of the waterstop body 140. In addition, the diameter of the flange portion 116 is equal to or smaller than the diameter of the through hole 13 so that the connector main body 110 can be inserted or loosely inserted into the through hole 13.

  As shown in FIG. 7, the nut body 120 is configured as a ring body that can be screwed to the connector main body 110. An inner screw portion 121 is formed on the inner surface of the nut body 120. The inner diameter of the nut body 120 is determined so that the inner screw portion 121 and the screw portion 113 of the connecting portion main body 110 are screwed together. That is, the nut body 120 can be screwed into the cylindrical portion 112 of the connection portion main body 110 and can be screwed in the axial direction thereof. A plurality of protrusions 122 extending in the axial direction are formed on the outer surface of the nut body 120. The plurality of protrusions 122 are formed at equal intervals in the circumferential direction. The protrusion 122 makes it easy to rotate the nut body 120 by hand. Further, the other end surface of the nut body 120 is provided with a smooth sliding contact surface 124 that is in sliding contact with the end surface on one end side of the spacer body 130. By this sliding contact surface 124, the nut body 120 is rotatable relative to the spacer body 130 while abutting (sliding contact) with the spacer body 130 at the end surfaces.

  As shown in FIG. 8, the spacer body 130 is configured as a short cylindrical body that is slidably inserted in the connector main body 110 in the axial direction. The spacer body 130 includes a cylindrical inner cylinder portion 131 that extends in the axial direction, and an outer cylinder portion 132 that is connected to the other end side of the inner cylinder portion 131 and has an enlarged diameter. The inner cylinder 131 constitutes the inner wall of the annular spacer body 130. The inner diameter of the inner cylinder 131 is larger than the outer diameters of the cylinder 112 and the screw 113 of the connection body 110 so that the spacer body 130 is slidable in the axial direction while being externally inserted into the cylinder 112. Is also big.

  A base end surface 133 with which the sliding contact surface 124 of the nut body 120 abuts is formed on the end surface on the one end side of the inner cylindrical portion 131. The base end surface 133 is formed as a smooth surface so that the planar sliding contact surface 124 of the nut body 120 can slide in the rotational direction. That is, when the nut body 120 rotates while the sliding contact surface 124 and the base end surface 133 are in contact with each other, the spacer body 130 slides to the other end side in the axial direction along with the screwing of the nut body 120 toward the other end side in the axial direction. Is possible. Further, a pressing surface 134 for pressing one end surface 141 of the waterstop body 140 attached to the attachment portion 114 of the cylindrical portion 112 is formed on the annular end surface on the other end side of the inner cylindrical portion 131. Yes. That is, the inner diameter of the inner cylindrical portion 131 is smaller than the outer diameter of the water stop body 140 so that the pressing surface 134 can be engaged with the one end face 141 of the water stop body 140. It is preferable that the pressing surface 134 can be brought into contact with almost the entire one end surface 141 of the waterstop body 140. In the present embodiment, the one end surface 141 and the pressing surface 134 of the waterstop body 140 are annular with substantially the same size and shape. It is formed as a surface.

  Furthermore, the outer cylinder part 132 is a cylindrical body whose diameter is larger than the outer surface of the peripheral wall of the inner cylinder part 131. The outer cylinder part 132 extends along the axial direction so that the front end protrudes from the front end (pressing surface 134) of the inner cylinder part 131 to the other end side. The inner diameter of the outer cylindrical portion 132 is larger than the outer diameter of the water stopping body 140 so that the outer cylindrical portion 132 does not contact the water stopping body 140 attached to the cylindrical portion 112. Further, the inner diameter of the outer cylinder part 132 is equal to or larger than the diameter of the through hole 13 so that the outer cylinder part 132 contacts the peripheral edge of the through hole 13 of the peripheral wall 12. A contact surface 135 for contacting (intimately contacting) the curved peripheral wall 13 of the cylindrical drainage pipe 11 that is a connected body is formed on the other end (tip) surface of the outer cylindrical portion 132. Yes. The contact surface 135 is curved so as to follow the curved shape of the periphery of the through hole 13 of the drain pipe 11. More specifically, the distal end edge of the outer cylindrical portion 132 is curved so as to form a rounded concave curve in plan view and bottom view, and to form a rounded convex curve in left and right side views. The contact surface 135 is disposed at least on the other end side (through hole 13 side) of the pressing surface 134. In the present embodiment, the most concave portion of the contact surface 135 is at a position substantially equal to the concave pressure surface 134 in the axial direction.

  As shown in FIG. 9, the waterstop 140 is an elastic thin-walled cylindrical body. The waterstop 140 extends linearly from one end surface 141 in the axial direction to the other end surface 142 in a normal state (during inelastic deformation). A meat portion between the one end surface 141 and the other end surface 142 is defined as an intermediate portion 143. The waterstop 140 is attached to the attachment part 114 of the tubular part 112 of the connection part main body 110 so that its inner diameter is substantially equal to the outer diameter of the attachment part 114 or from the outer diameter of the attachment part 114. Is also small. Further, the outer diameter of the waterstop 140 is substantially equal to the outer diameter of the flange portion 116 and is equal to or smaller than the diameter of the through hole 13 so that the water stop body 140 can be inserted into the through hole 13 or loosely inserted in the initial shape. Furthermore, the water stop body 140 is formed with substantially the same length as the attachment part 114 extending between the screw part 113 and the flange part 116.

  In this embodiment, the connector main body 110, the nut body 120, and the spacer body 130 are each formed from a synthetic resin. However, this invention is not limited to this, You may form all or one part of a connector main body, a nut body, and a spacer body with other materials, such as a metal. In this embodiment, the material of the waterstop 140 is a rubber material, but other materials may be selected as long as they can be elastically deformed and can be in close contact with the through hole.

  Based on the above description of each component, the piping material connector 100 of the present embodiment will be described in more detail with reference to FIGS. 3A and 3B again.

  FIG. 3A shows the piping material connector 100 in a state where the waterstop 140 is not elastically deformed. The form of FIG. 3A is employed when the piping material connector 100 is inserted into the through hole 13 of the drain pipe 11. According to FIG. 3A, the waterstop 140 is extrapolated so as to be in close contact with the attachment portion 114 of the cylindrical portion 112 of the connection portion main body 110. The other end surface 142 of the water stop body 140 is in contact with the back surface (end surface on one end side) of the flange portion 116. On the other hand, a gap is formed between the outer surface of the reduced diameter portion 114 of the cylindrical portion 112 and the inner surface of the waterstop 140 in the vicinity of the other end surface 142. The outer diameter of the pipe material connector 100 on the other end side of the spacer body 130 is substantially the same as or smaller than the diameter of the through hole 13 so that it can be easily inserted into the through hole 13.

  Further, the spacer body 130 is externally inserted into the screw portion 113 of the cylindrical portion 112. A slight gap is formed between the inner surface of the inner cylinder portion 131 of the spacer body 130 and the outer surface of the screw portion 113. That is, the spacer body 130 can be freely moved in the rotation direction and the axial direction around the cylindrical portion 112 without being interfered with the screw portion 113 in a state of being inserted into the cylindrical portion 112 (screw portion 113). . And the one end surface 141 of the water stop body 140 and the press surface 134 of the inner cylinder part 131 of the spacer body 130 are substantially contact | abutting (or adjoining). In this state, the spacer body 130 and the water stop body 140 are not in pressure contact, and the spacer body 130 can freely rotate. Further, the outer cylinder portion 132 (contact surface 135) of the spacer body 130 extends so as to surround the intermediate portion 143 of the water stop body 140. A gap is formed between the outer cylinder part 132 and the intermediate part 143.

  Then, the inner screw portion 121 of the nut body 120 is partially screwed with the screw portion 113 of the cylindrical portion 112, so that the nut body 120 is loosely screwed to the connection portion main body 110. That is, in the form of FIG. 3A, the nut body 120 is temporarily fixed to the cylindrical portion 112. The sliding contact surface 124 of the nut body 120 is in contact with the proximal end surface 133 of the spacer body 130. Since both the sliding contact surface 124 and the base end surface 133 are smooth surfaces, the frictional force generated between them is very small. Therefore, even if a certain amount of force is applied in the axial direction, they can slide in the rotational direction. In this embodiment, when the piping material connector 100 is inserted through the through-hole 13, the nut body 120 is screwed to the connection portion main body 110 at a further retracted position, and the nut body 120, the spacer body 130, and the water stop body 140. May be separated from each other.

  FIG. 3B shows the piping material connector 100 in a state where the waterstop 140 is elastically deformed. The form of FIG. 3B is employed when fixing the piping material connector 100 to the through hole 13 of the drain pipe 11 in a water-stopped state. 3A, when the nut body 120 is rotated and screwed to the other end side on the cylindrical portion 112, the sliding contact surface 124 and the base end surface 133 are in sliding contact with each other, and the spacer together with the nut body 120. The body 130 moves forward to the other end side. Then, the pressing surface 134 of the spacer body 130 presses the one end surface 141 of the waterstop body 140 toward the other end side in the axial direction. By further tightening the nut body 120, the spacer body 120 is pushed forward while resisting the elastic force of the water stop body 140. As a result, as shown in FIG. 3B, the distance between the back surface of the flange portion 116 and the pressing surface 134 of the spacer body 130 is narrower than the initial form, the water stop body 140 is compressed in the axial direction, and the water stop body 140 The intermediate portion 143 is elastically deformed so as to bulge outward in the radial direction. When the intermediate portion 143 of the waterstop body 140 swells, its outer diameter becomes larger than the diameter of the through hole 13.

  In the water-stopping body 140 that is elastically deformed, the outer surface of the water-stopping body 140 (that is, the intermediate portion 143) bulges outward in a generally convex shape or arch shape, but the bulge at the approximate center of the intermediate portion 143 is the largest. The waterstop body is inserted so that the other end of the waterstop body 140 enters a recess (or a portion recessed at an acute angle) between the reduced diameter portion 115 and the flange portion 116 formed on the other end side of the attachment portion 114. 140 is bent and deformed. That is, when the waterstop 140 is compressed in the axial direction, the other end (tip) of the waterstop 140 slides radially inward by the reduced diameter portion 115, and the intermediate portion 143 of the waterstop 140 tends to bulge outward. Thus, the elastic deformation is assisted. That is, the diameter-reduced portion 114 functions as a means for preventing the waterstop 140 from getting over in the axial direction while guiding the outward deformation of the waterstop 140.

  In this embodiment, it is designed so that the outer diameter of the initially-formed waterstop 140 and the diameter of the through-hole 13 are substantially equal. Thereby, the water blocking body 140 of the initial shape can be easily inserted into the through-hole 13, and the outer surface of the water blocking body 140 is also near one end or the other end when the intermediate portion 143 of the water stopping body 140 bulges out. Can be pressed against the end face of the through-hole 13 with a stronger force. In the present embodiment, the dimension of the piping material connector 100 may be determined based on the diameter of the predetermined through hole 13, or the through hole 13 having a diameter matched to the dimension of the piping material connector 100 is used as the peripheral wall. 12 may be perforated.

  Next, with reference to FIG. 10 thru | or FIG. 12, the piping material installation structure 10 by the piping material connection tool 100 of this embodiment is demonstrated. FIG. 10 is a schematic perspective view of the piping material installation structure 10. 11A and 11B are a side view and a plan view of the piping material installation structure 10, respectively. FIG. 12 is an FF sectional view and a GG sectional view of the piping material installation structure 10.

  As shown in FIG. 10, in the piping material installation structure 10 of the present embodiment, the connected body is a cylindrical drain pipe 11, and a circular through hole 13 is formed in the peripheral wall 12 of the drain pipe 11. Then, the pipe material connector 100 is inserted and fixed in the through hole 13 of the drain pipe 11 so that the L-shaped pipe 15 as the pipe material communicates with the drain pipe 11 through the pipe material connector 100. It is connected to the. Upstream of the pipe 15, a drain outlet of a device such as a gas water heater can be connected.

  As shown in FIG. 11, in the piping material installation structure 10, the contact surface 135 of the spacer body 130 of the piping material connector 100 is in contact with the peripheral wall 12 of the drain pipe 11. Since the concave curve in the plan view and the bottom view of the contact surface 135 corresponds to the radius of the peripheral wall 12 in the horizontal section, the concave curved portion of the contact surface 135 and the convex curved portion of the peripheral wall 12 are fitted together. The substantially entire contact surface 135 is substantially in contact with (or close to) the peripheral surface of the through hole 13 of the peripheral wall 12. As described above, the contact surface 135 contacts the peripheral edge of the through hole 13 in the circumferential direction of the through hole 13, thereby suppressing a gap from being generated between the spacer body 130 and the peripheral wall 12. Thereby, the waterstop 140 is protected from dust and dirt in the external space without being exposed to the outside, and its deterioration is suppressed.

  As shown in FIG. 12, the intermediate portion 143 of the water stop body 140 bulges outward in the radial direction in a state where the contact surface 135 is in contact with the peripheral wall 12, and is compacted to the end surface of the through hole 13. In the vertical sectional view of FIG. 12A, since the most recessed portion of the contact surface 135 and the upper and lower peripheral edges of the through hole 13 are in contact with the peripheral wall 12, it penetrates near one end surface 141 of the waterstop body 140. The end face of the hole 13 is located. However, as shown in FIG. 3B, the intermediate portion 143 of the water stop body 140 rises outward from the vicinity of the one end surface 141, so that the outer surface of the water stop body 140 and the through-hole 13 also exist in the vicinity of the one end surface 141. The end face is securely in pressure contact. On the other hand, in the horizontal sectional view of FIG. 12B, the end surface of the through hole 13 is located at the approximate center in the axial direction of the waterstop 140, and the portion where the contact surface 135 protrudes relatively to the peripheral wall 12 and the through hole 13 are in contact with the left and right end faces. Since the middle portion 143 of the waterstop body 140 is bulged most in the vicinity of the center thereof, the outer surface of the waterstop body 140 and the end face of the through hole 13 are more strongly pressed against each other. That is, the pressure contact mode at other positions in the circumferential direction of the through-hole 13 is about the middle between the pressure contact mode of FIG. 12A and the pressure contact mode of FIG. Therefore, in the piping material installation structure 10 of the present embodiment, the outer surface of the water blocking body 140 and the end surface of the through hole 13 are consolidated over the entire circumferential direction of the through hole 13 to form a stable water stop state.

  Next, with reference to FIG. 13, a process of constructing the piping material installation structure 10 by fixing the piping material connector 100 to the drain pipe 11 as a connected body will be described.

  First, as shown in FIG. 13A, the piping material connector 100 is connected to the drain pipe while maintaining the posture of the piping material connector 100 so that the concave curved portion of the spacer body 130 matches the convex curved surface of the drain tube 11. 11, the other end side (the flange portion 116, the water blocking body 140, and the tip portion of the tubular portion 112) is inserted into the through-hole 13. And as shown in FIG.13 (b), the contact surface 135 of the spacer body 130 is contact | abutted to the through-hole 13 periphery. At this time, even if the posture of the spacer body 130 is inclined at a slight angle in the circumferential direction, the abutment surface 135 is in sliding contact with the peripheral wall 12 and the spacer body 130 rotates around the axis, so that the piping material connector 100 is It can be arranged in the above posture. Further, since the contact surface 135 and the periphery of the through hole 13 of the spacer body 130 are curved so as to correspond to each other, the contact surface 135 and the periphery of the through hole 13 can stably maintain the contacted posture. . Further, the distance between the end surface of the through hole 13 and the outer surface of the normal water stop body 140 is substantially uniform in the circumferential direction of the through hole 13 with the water stop body 140 passing through the through hole 13 in the axial direction.

  Next, the nut body 120 is rotated while pressing the contact surface 135 against the periphery of the through hole 13. By rotating the nut body 120, the nut body 120 is screwed to the other axial end of the connecting portion main body 110 while the sliding contact surface 124 of the nut body 120 and the proximal end surface 133 of the spacer body 130 are slid in the rotational direction. Advance. Thereby, the nut body 120 advances relatively with respect to the connection part main body 110. Specifically, the spacer body 130 is in contact with the peripheral wall 12 and the nut body 120 is maintained at the position in contact with the spacer body 130, and the rotation of the nut body 120 causes the spacer body 130 and the nut body 120 to move in the axial direction. The connecting portion main body 110 is pulled toward the front side of the through hole 13 without being displaced. As a result, the distance between the rear surface of the flange portion 116 and the pressing surface 134 of the spacer body 130 is reduced, and the water stop body 140 is compressed in the axial direction and bulged in the radial direction. Then, by tightly tightening the nut body 120, the water stop body 140 and the end face of the through hole 13 are more closely pressed, and the pipe material connector 100 is fixed to the drain pipe 11 in a water stop state. At this time, the contact surface 135 of the spacer body 130 and the periphery of the through hole 13 are fitted to each other in a concave and convex relationship in a plan view, and the frictional force between the waterstop 140 and the end surface of the through hole 13. Thus, it is possible to prevent the connecting portion main body 110 and the spacer body 130 from rotating due to the tightening (rotation) operation of the nut body 120. Finally, the pipe material installation structure 10 can be constructed by connecting the pipe 15 as the pipe material to the connection portion 111 of the pipe material connector 100 in a water-stopped state.

  Hereinafter, the effect in the piping connection tool 100 of one Embodiment which concerns on this invention is demonstrated.

  According to the piping material connector 100 of the present embodiment, the pressing surface 134 and the flange portion 116 of the spacer body 130 are moved by the screwing of the nut body 120 in a state where the water stop body 140 is inserted into the through hole 13 of the drain pipe 11. The outer surface of the water stop body 140 is pressure-bonded to the end face of the through hole 13 in a water stop state by sandwiching and compressing the water stop body 140 in the axial direction and causing the intermediate portion 143 of the water stop body 140 to bulge in the radial direction. That is, since the distance between the end face of the through-hole 13 and the outer surface of the water stop body 140 is substantially uniform in the circumferential direction of the through-hole 13 in a state where the water stop body 140 having the initial shape penetrates the through-hole 13 in the axial direction. When the intermediate portion 143 of 140 bulges, the outer surface of the water blocking body 140 and the end surface of the through hole 13 are consolidated without gaps over the entire circumferential direction of the through hole 13. In particular, in this embodiment, since the diameter of the through hole 13 and the outer diameter of the water blocking body 140 are substantially equal, the outer surface of the water blocking body 140 and the end face of the through hole 13 are reliably consolidated in the axial direction. Further, since the outer diameter of the waterstop body 140 expands and varies so as to correspond to the diameter of the through hole 13, strict accuracy is not required for the dimensions and shape of the waterstop body 140 and the connection portion main body 110. Therefore, the piping material connector 100 of the present embodiment can be fixed to the drain pipe 11 which is a connected body by forming a more reliable water stop state.

  Further, the nut member 120 is operated in a state where the other end side of the piping material connector 100 is inserted into the through hole 13 and the contact surface 135 is in contact with the periphery of the through hole 13 over the entire circumferential direction. Thus, the piping material connector 100 can be easily fixed to the through hole 13 of the connected body. That is, the connecting member main body 110 and the water stop body 140 are inserted by inserting the piping material connector 100 into the through hole 13 and screwing the nut body 120 until the contact surface 135 of the spacer body 130 contacts the outer surface of the peripheral wall 12. The water stop body 140 can be pressed by the pressing surface 134 to bulge in the radial direction while pulling the water toward the peripheral wall 12 side. That is, the nut body 120 can be operated in a stable posture with the abutment surface 135 addressed to the outer surface of the peripheral wall 12 of the drain pipe 11, so that the installation work of the piping material connector 100 can be performed stably. It becomes possible.

  Therefore, the piping material connector 100 of the present embodiment can be easily installed in the through hole 13 formed in the drain pipe 11 that is a connected body, and is a piping material in a more reliable water stop state. The pipe 15 can be connected to the drain pipe 11.

  The present invention is not limited to the above embodiment, and various embodiments and modifications can be taken. Hereinafter, second and third embodiments and modifications of the present invention will be described. In addition, in each embodiment, the component which the last two digits have in common among the components shown by three digits has the same or similar characteristics unless otherwise specified, and a part of the description is omitted.

[Second Embodiment]
With reference to FIG. 14 thru | or FIG. 17, the piping material connection tool 200 of 2nd Embodiment is demonstrated. As shown in FIG. 14, the piping material connector 200 includes a connector body 210 extending in the axial direction, a nut body 220 screwed to the connector body 210, and a connector body 210 on the other end side of the nut body 220. And a spacer body 230 that is attached to the connector main body 210 on the other end side of the spacer body 230 and that is elastically deformable. The piping material connection tool 200 of the present embodiment is different from the piping material connection tool 100 of the first embodiment only in the configuration of the spacer body 230. And the piping material connection tool 200 of 2nd Embodiment makes the installation object the square pipe material 21 as shown in FIG. 16 as a to-be-connected body.

  As shown in FIG. 15, the spacer body 230 is configured as a short cylindrical body that is slidably inserted in the connector main body 210 in the axial direction. The spacer body 230 includes a cylindrical tube portion 231 that extends in the axial direction, and a protruding portion 232 that protrudes radially outward at the other end of the tube portion 231. The cylindrical portion 231 constitutes an inner wall of the annular spacer body 230. The inner diameter of the cylindrical portion 231 is larger than the outer diameters of the cylindrical portion 212 and the screw portion 213 of the connection portion main body 210. In addition, a base end surface 233 on which the sliding contact surface 224 of the nut body 220 can slide in the rotation direction is formed on the end surface on one end side of the cylindrical portion 231.

  A pressing surface 234 for pressing the one end surface 241 of the water stop body 240 attached to the attachment portion 214 of the cylinder portion 212 is formed on the end surface on the other end side of the cylinder portion 231. That is, the inner diameter of the cylindrical portion 231 is smaller than the outer diameter of the water stop body 240 so that the pressing surface 234 can be engaged with the one end surface 241 of the water stop body 240. Further, the outer diameter of the overhang portion 220 is determined to be larger than the diameter of the through hole 23. A contact surface 235 that can contact the periphery of the through hole 23 is formed on the other end (tip) surface of the overhang portion 232. The abutting surface 235 is planar, and can abut (closely contact) the entire circumferential direction of the planar peripheral wall 23 of the rectangular tube material 21 which is a connected body. The abutting surface 235 is arranged on the outer side in the radial direction than the pressing surface 234, but both form the same plane and are not particularly divided.

  16 and 17 show a piping material installation structure 20 in which a piping material connector 200 is fixed to a through hole 23 formed in a peripheral wall 22 of a rectangular tube material 21. As shown in FIG. 16, in the piping material installation structure 20 of the present embodiment, the connected body is a tubular material 21 having a rectangular cross-sectional view, and a circular through hole 23 is formed in the peripheral wall 22 of the tubular material 21. Then, the pipe material connector 200 is inserted and fixed in the through hole 23 of the pipe material 21, and the L-shaped pipe 25 as the pipe material is connected to the pipe material 21 through the pipe material connector 200. Has been. As shown in FIG. 17A, in the piping material installation structure 20, the contact surface 235 of the spacer body 230 of the piping material connector 200 is in contact with the peripheral wall 22 of the pipe material 21. Since the contact surface 235 and the periphery of the through hole 23 are opposed to the vertical plane in parallel, the contact surface 235 is in contact with the periphery of the through hole 23 over the entire circumferential direction. As shown in FIG. 17B, the intermediate portion 243 of the waterstop 240 is compressed in the axial direction and bulges outward in the radial direction. At this time, the end face of the through hole 23 is located in the vicinity of the one end face 241 of the water stop body 240, but the intermediate portion 243 of the water stop body 240 rises outward from the vicinity of the one end face 241. In addition, the outer surface of the water blocking body 240 and the end face of the through hole 23 are securely in pressure contact with each other. In the present embodiment, the pressure contact form is uniform in the circumferential direction. That is, the outer surface of the water blocking body 240 and the end surface of the through hole 23 are in pressure contact with each other over the entire circumferential direction of the through hole 23, so that a stable water stop state is formed.

  That is, by changing the shape of the contact surface of the spacer body of the present invention so as to match the shape of the peripheral surface of the through hole, it is possible to deal with various shapes of connected bodies.

[Third Embodiment]
With reference to FIG.18 and FIG.19, the piping material connection tool 300 of 3rd Embodiment is demonstrated. As shown in FIG. 18, the piping material connection tool 300 includes a connection tool main body 310 extending in the axial direction, a nut body 320 screwed to the connection tool main body 310, and a connection tool main body 310 on the other end side of the nut body 320. A spacer body 330 extrapolated to the connector body, and an elastically deformable water stop body 340 attached to the connector main body 310 at the other end of the spacer body 330. In the piping material connector 300 of the third embodiment, only the configuration of the spacer body 330 is different from the piping material connectors 100 and 200.

  The spacer body 330 is configured as a short cylindrical body that is slidably inserted in the connector main body 310 in the axial direction. The spacer body 330 includes a cylindrical inner cylinder portion 331 extending in the axial direction, and an outer cylinder portion 332 connected to the other end of the inner cylinder portion 331 with an enlarged diameter. The inner cylinder portion 331 constitutes the inner wall of the annular spacer body 330. The inner cylinder part 331 has an inner diameter larger than the outer diameters of the cylindrical part 312 and the screw part 313 of the connection part main body 310. A base end surface 333 is formed on the end surface on one end side of the inner cylinder portion 331 so that the sliding contact surface 324 of the nut body 320 can slide in the rotational direction. In addition, a pressing surface 334 for pressing the one end surface 341 of the waterstop 340 attached to the attachment portion 314 of the cylindrical portion 312 is formed on the annular end surface on the other end side of the inner cylindrical portion 331. Yes. On the other hand, the outer cylinder part 332 is a cylindrical body whose diameter is larger than the outer peripheral surface of the inner cylinder part 331. The outer cylinder part 332 extends along the axial direction so that the tip of the outer cylinder part 332 protrudes to the other end side from the tip of the inner cylinder part 331 (pressing surface 334). The inner diameter of the outer cylinder part 332 is larger than the outer diameter of the waterstop body 340. A contact surface 335 is formed on the other end (tip) surface of the outer cylindrical portion 332 to contact (closely contact) the periphery of the through-hole 33 of the rectangular tube 31 that is a connected body. The contact surface 335 protrudes to the other end side from the pressing surface 334 and is formed in an annular shape on one plane.

  FIG. 19 shows a piping material installation structure 30 in which a piping material connector 300 is fixed to a through hole 33 formed in a peripheral wall 32 of a rectangular tube material 31. As shown in FIG. 19, in the piping material installation structure 30 of the present embodiment, the body to be connected is a tubular material 31 having a rectangular cross-sectional view, and a circular through hole 33 is formed in the peripheral wall 32 of the tubular material 31. The difference between the piping material installation structure 20 of the second embodiment and the piping material installation structure 30 of the third embodiment is that the contact surface 335 protrudes to the other end side of the pressing surface 334. In the piping material installation structure 30, the outer surface of the water stop 340 contacts the end surface of the through hole 33 on the center side of the intermediate portion 343 of the water stop 340 by the axial distance between the contact surface 335 and the pressing surface 334. It touches. That is, by changing the axial position of the contact surface of the spacer body, it is possible to adjust the axial position of the outer surface of the water blocking body that is in pressure contact with the end face of the through hole.

  As described above, in the first to third embodiments, the three types of spacer bodies 130, 230, and 330 have been described. However, only the spacer bodies 130, 230, and 330 are interchanged according to the shape of the peripheral wall of the connected body. Thus, it is possible to fix the piping material connector in a water-stopped state with respect to the through hole of the connected body. That is, the pipe material connector of the present invention may include a plurality of types of spacer bodies that can be interchanged with each other so as to be able to cope with the peripheral wall shapes of different connected bodies. As a result, it is possible to cope with different peripheral wall shapes of the connected bodies while suppressing the number of parts used by the operator at the site. In other words, the piping material connector according to the present invention has high expandability because it can be applied to various shapes of connected bodies by changing and / or adding only the spacer body. The above three types of spacer bodies are merely examples, and those skilled in the art can appropriately change and / or add the shape of the spacer bodies according to the shape of the peripheral wall of the connected body.

[Modification]
The piping material connector of the present invention is not limited to the above embodiment, and can be modified as follows, for example.

(1) Although the piping material connector 100 of this embodiment is used for the use which connects the pipe | tube 15 to the drain pipe 13, this invention is not limited to this, It is applicable to various uses. That is, the connected body can take various forms other than the drain pipe. The connected body is not limited to a pipe body such as a drain pipe, but may be, for example, a wiring / pipe box, a duct or the like as long as a through-hole is formed in the peripheral wall. Also. The piping material is a wide concept including not only pipes but also plumbing instruments such as stop cocks, faucets, caps, and measuring instruments. That is, the piping material connector of the present invention can be applied to various uses without departing from the technical scope of the present invention.

(2) The piping material connector of the present invention is not limited to the shape and dimensions of the above embodiment. For example, the connecting portion is a straight cylindrical body in the above-described embodiment, but may be L-shaped, curved, or branched. Further, the connecting portion may have the same diameter as the cylindrical portion, or may have a larger diameter than the cylindrical portion. Furthermore, a thread may be formed on the outer surface or the inner surface of the connecting portion. In the said embodiment, although the flange part comprises the other end of a cylindrical part, a part of cylindrical part may protrude further from the other end surface of a flange part. Furthermore, if the waterstop attached to the tubular portion can bulge outward in the radial direction, the reduced diameter portion may be omitted from the tubular portion. The shape of a spacer body is not limited to the said form, It can change arbitrarily according to the periphery of the through-hole of a to-be-connected body. For example, when a through-hole is formed in the corner of a prism, the contact surface of the spacer body may be formed in an L shape in plan view. Moreover, when the through-hole peripheral surface has an unevenness | corrugation, you may form the contact surface of a spacer body in an uneven | corrugated shape.

(3) In the said embodiment, although the contact surface of the spacer of a piping material connection tool is formed so that the surrounding wall outer surface of a to-be-connected body may be formed, this invention is not limited to this. That is, the shape of the contact surface of the spacer may not match the shape of the outer surface of the peripheral wall, the contact surface may partially contact the peripheral wall, and a gap may be formed between the two. Even in such a configuration, the nut body can be operated in a posture in which the contact surface is directed to the outer peripheral surface of the connected body, so that the installation work of the piping material connector can be performed stably. A certain effect is obtained. Alternatively, the contact surface of the spacer body may be omitted if the spacer body can compress the waterstop body in the axial direction with the pressing surface. That is, even if the spacer body does not contact the peripheral wall, the piping material connector can be fixed to the through hole in a water-stopped state by the swelling of the water-stopping body.

(4) The said embodiment is comprised so that the pipe | tube which is a different body may be fitted by the connection part of a piping material connector. However, the present invention is not limited to the above embodiment. That is, in the present invention, the connection portion of the connector main body may be integrally connected to the piping material. In other words, it may be configured such that the connector body of the pipe material connector is formed integrally with the pipe material, and the function of the pipe material connector is exhibited as the pipe material.

  The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

10 Piping material installation structure 11 Drain pipe (connected body)
12 peripheral wall 13 through-hole 15 pipe (piping material)
DESCRIPTION OF SYMBOLS 100 Piping material connection tool 110 Connection tool main body 111 Connection part 112 Cylindrical part 113 Screw part 114 Attachment part 115 Reduced diameter part (passing prevention means)
116 Flange (Means to prevent getting over)
120 Nut body 121 Inner screw part 122 Projection 124 Sliding contact surface 130 Spacer body 131 Inner cylinder part 132 Outer cylinder part 133 Base end face 134 Pressing surface 135 Abutting surface 140 Water stop body 141 One end face 142 The other end face 143 Intermediate part

Claims (8)

A piping material connector for connecting a piping material to a through-hole of a connected body,
A connecting portion for connecting the piping material to one end, a cylindrical portion that is connected to the connecting portion and extends in the axial direction, a screw portion formed on the outer surface of the cylindrical portion, and the other end side of the screw portion And a connector main body having a flange portion projecting outward from the cylindrical portion,
A nut body screwed into the screw portion and capable of screwing toward the flange portion;
A spacer body that is extrapolated to the tubular portion between the nut body and the flange portion and is slidable in the axial direction of the tubular portion;
When the cylindrical portion is extrapolated between the spacer body and the flange portion and is pressed by the spacer body and compressed in the axial direction, the intermediate portion bulges only radially outward. A waterstop body that can be elastically bent and deformed,
An outer surface between the screw portion and the flange portion of the tubular portion is provided with an attachment portion for attaching the water stop body, and the attachment portion is at least an intermediate portion of the water stop body. The inner surface is closely attached to the attachment portion to hold the waterstop,
With the water stop inserted in the through hole of the body to be connected, the nut body is tightened so that the outer surface of the water stop is pressed against the end surface of the through hole in a water stop state .
A pipe having a reduced diameter portion formed in a tapered shape so as to continuously reduce the diameter from the other end of the attachment portion is provided between the attachment portion and the flange portion. Material connection tool. A piping material connector for connecting a piping material to a through-hole of a connected body,
A connecting portion for connecting the piping material to one end, a cylindrical portion that is connected to the connecting portion and extends in the axial direction, a screw portion formed on the outer surface of the cylindrical portion, and the other end side of the screw portion And a connector main body having a flange portion projecting outward from the cylindrical portion,
A nut body screwed into the screw portion and capable of screwing toward the flange portion;
A spacer body that is extrapolated to the tubular portion between the nut body and the flange portion and is slidable in the axial direction of the tubular portion;
When the cylindrical portion is extrapolated between the spacer body and the flange portion and is pressed by the spacer body and compressed in the axial direction, the intermediate portion bulges only radially outward. A waterstop body that can be elastically bent and deformed,
The other end of the cylindrical portion is provided with a reduced diameter portion formed in a tapered shape that is reduced in diameter toward the other end side, adjacent to the flange portion.
The nut body is tightened in a state where the waterstop is inserted into the through-hole of the connected body, whereby the other end of the waterstop is placed in a recess between the reduced diameter portion and the flange portion. The piping material connector, wherein an intermediate portion of the water stop body bulges so as to enter, and the water stop body outer surface is in pressure contact with the end surface of the through hole in a water stop state.   The said spacer body is provided with the press surface which presses the said water stop body to an axial direction with the screwing of the said nut body, and the contact surface contact | abutted to the outer peripheral wall surface of the said to-be-connected body. 2. Piping material connector as described in 1. The piping material connector according to claim 3 , wherein the contact surface is configured to contact the peripheral edge of the through hole over a circumferential direction of the through hole. The pipe member according to claim 4 , wherein the connected body is a cylindrical hollow body, and the contact surface is curved so as to follow a curved surface shape of a peripheral edge of the through hole of the connected body. Connection tool. The piping material connector according to any one of claims 1 to 5 , further comprising a climbing prevention means for preventing the waterstop from getting over the flange portion when the waterstop is compressed. . The piping material connector according to claim 6 , wherein the climbing prevention means includes the flange portion having a diameter larger than an outer diameter of the waterstop. The piping material connector according to any one of claims 1 to 7 is inserted and disposed in a through-hole formed in a peripheral wall of the connected body, and the water stop body of the piping material connector bulges. Thus, the piping material installation structure is characterized in that the outer surface of the water blocking body is in pressure contact with the end surface of the through hole in a water stopping state, and a piping material is connected to the connection portion of the piping material connector.

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