JP6185851B2 - Pipe fitting, pipe connection device, and connection body - Google Patents

Description

  The present invention relates to a pipe joint, a pipe connection device, and a connection body for connecting pipe materials.

  Conventionally, various pipe joints are used to connect or connect pipe materials.

  The flexible pipe joint (1) of Patent Document 1 includes a first body (2) that is a joint body, a second body (3) as a connection body having a receiving port, a first body (2), and a second body ( 3) and a lock ring (18) as an engaging body accommodated in the enlarged inner diameter portion (13). In the lock ring (18), an inner peripheral edge (21) protrudes from the inner peripheral surface so as to engage with the small diameter portion of the bellows of the tube material. And if a pipe material is inserted in a receptacle, a lock ring (18) can engage with the outer surface of a pipe material, and can connect a pipe material and a coupling. On the other hand, when the tube material is pulled out, the lock ring (18) contacts the tapered surface (15) of the second main body (3) to reduce the inner diameter, thereby preventing the tube material from coming off. However, in the pipe joint of Patent Document 1, in order to remove the pipe member inserted in the retaining state from the receiving port of the second main body (3), the second main body (3) is removed from the first main body (2), and further The lock ring (18) had to be disengaged from the tubing. That is, when it becomes necessary to remove the pipe material from the receptacle, there is a problem in that it takes time and labor since each part must be disassembled separately. On the other hand, Patent Document 2 has been proposed.

  The connecting device for a pipe of Patent Document 2 includes a pipe (40) disposed in a casing (10) into which the pipe (40) is inserted and an inner keyway (13) formed inside the casing (10). And an elastic latching element (30) for locking. The latch element (30) includes a band-shaped main body element (31) and a fixed arm (32) formed obliquely inward (see FIGS. 4 to 8 of Patent Document 2). An opening (40) through which the latch element (30) can be pulled out is formed in the outer surface of the casing (10) in order to unlock the pipe (40) locked in the casing (10). Yes. Moreover, in order to arrange the latch element (30) in the casing (10) to prevent rotation, the inner keyway (13) has a first stopper surface (13.1) at one end in the latch element (30) insertion direction. And a second stopper (14.1) in the region of the opening (14). The latching element (30) has a front end (33) in the insertion direction and a rear end (34) in the pulling direction, and a fixed nose (34.1) projects from the rear end (34). The latch element front end (33) hits the first stopper surface (13.1), and the latching element (30) has a fixed nose (34.1) by the elastic action inherent to the latch element (30). By engaging with the rear surface of the stopper surface (14.1), rotation of the latching element (30) in the drawing direction is suppressed.

JP 2003-269670 A Japanese Patent No. 5290535

  However, in the coupling device of Patent Document 2, when the fixed nose (34.1) of the latch element rear end (34) is detached from the second stopper surface (14.1) on the rear side in the insertion direction, the latch is released from the opening (14). There is a possibility that the element (30) pops out and the connection of the pipe (40) is unexpectedly released. More specifically, the elastic latching element (30) is regulated between the first stopper surface (13.1) and the second stopper surface (14.1) by the inherent elastic action. Yes. Therefore, when an external force in the insertion direction is applied to the latching element (30) and elastically deforms and the fixed nose (34.1) is once removed from the second stopper surface (14.1), the repulsive force of the elastic deformation ( It is considered that the latch element front end (33) is detached from the first stopper surface (13.1) and the latch element (30) is projected from the opening (14) due to the elastic restoring force. In particular, since the tip (33) of the latching element (30) is exposed to the outside through the opening (14), it is susceptible to physical influence from the outside, and the fixed nose (34.1) is the second. It is conceivable that the stopper surface (14.1) is easily displaced. That is, in the coupling device of Patent Document 2, there is a possibility that the connection of the pipe material may be unexpectedly released, and the stability of the pipe material connection is poor.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to make it possible to easily and quickly detach a pipe member inserted into a receiving port from a receiving port in a retaining state. It is an object to provide a pipe connection device, a pipe joint, and a connection body that can maintain a stable connection state.

The tubular material connecting device according to claim 1 is an annular belt-shaped body that is partially cut in the circumferential direction and can be expanded and deformed in the circumferential direction, and projects from the belt-shaped body and engages with an outer surface of the tubular material to be connected. An engaging body having a locking claw to perform,
A receiving port into which the pipe member is inserted, a receiving portion formed inside the receiving port to receive the engaging body, and a through hole for inserting the engaging body into and out of the receiving portion are formed to be removable. A connection body having a lid body,
The lid is provided with an abutting portion that abuts one end of the engaging body in the accommodating portion and restricts the rotation of the engaging body in the circumferential direction.

  The pipe connecting device according to claim 2 is the pipe connecting device according to claim 1, wherein the contact portion is provided with an engaging portion that engages with one end side of the engaging body, and the lid is removed. One end side of the engaging body is drawn out from the through hole.

  The pipe connection device according to claim 3 is the pipe connection device according to claim 1 or 2, wherein the lid is integrally formed on the peripheral wall of the housing portion, and a slit is formed around the lid. Yes.

  According to a fourth aspect of the present invention, there is provided a pipe joint including the pipe joint main body and the pipe material connecting device according to any one of the first to third aspects, wherein the connection body is integrated with or detached from a proximal end of the pipe joint main body. It is attached to the formula.

The connection body according to claim 5 is a connection body for connecting a pipe material to a pipe joint body,
A receptacle into which the pipe is inserted,
An annular belt-like body that is partly cut in the circumferential direction and can be expanded and deformed in the circumferential direction, and an engagement body that protrudes from the belt-like body and has a locking claw that engages with the outer surface of the tube material, A housing portion formed inward,
A lid formed so as to be removable so as to form a through hole for inserting the engagement body into and out of the accommodating portion;
An abutting portion that is provided on the lid body and that contacts one end of the engaging body in the housing portion to restrict rotation of the engaging body in the circumferential direction;
And a fixing portion for fixing to the pipe joint main body.

  According to the first aspect of the present invention, in the connected state where the engaging body is engaged with the outer surface of the pipe in the housing portion of the connecting body, the housing portion is closed in the circumferential direction of the engaging body. Jumping out of is prevented. In addition, since the contact portion is formed on the lid, one end of the cut engagement body contacts the contact portion in the housing portion, and rotation of the engagement body in the circumferential direction is prevented. That is, the pipe connection device of the present invention can securely hold the engaging body in the accommodating portion, and can maintain the connected state more stably. Further, when releasing the connection state, the cover body is removed, and a through-hole through which the engaging body can be inserted into and out of the housing portion is formed, whereby the engaging body that engages with the outer surface of the tube material is inserted into the through-hole of the connecting body. The pipe material can be easily and quickly detached from the receiving port. That is, in the pipe material connection device of the present invention, the pipe material can be easily detached from the receiving port without disassembling the connection body and the pipe joint main body apart. Therefore, the present invention provides a pipe connection device that can maintain the connection state of the pipe material more stably and can easily and quickly cancel the connection state as necessary.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, one end side of the engagement body is connected to the contact portion by the engagement portion. One end side can be easily pulled out from the accommodating portion. That is, it is possible to release the connection state of the pipe material more easily and quickly.

  According to the invention described in claim 3, in addition to the effect of the invention of claim 1 or 2, the slit around the lid body weakens the integral connection between the lid body and the peripheral wall of the connection body, so The body can be easily removed.

  According to the invention of the fourth aspect, the invention of any one of the first to third aspects can be exhibited as a pipe joint. That is, this invention provides the pipe joint which can maintain the connection state of a pipe material more stably, and can cancel | release this connection state simply and rapidly as needed.

  According to the fifth aspect of the present invention, in the connected state where the engaging body is engaged with the outer surface of the pipe in the housing portion of the connecting body, the housing portion is closed in the circumferential direction of the engaging body. Jumping out of is prevented. In addition, since the contact portion is formed on the lid, one end of the cut engagement body contacts the contact portion in the housing portion, and rotation of the engagement body in the circumferential direction is prevented. That is, according to the connection body of the present invention, the engagement body can be securely held in the housing portion, and the connection state of the pipe material to the pipe joint body can be more stably maintained. Further, when releasing the connection state, the cover body is removed, and a through-hole through which the engaging body can be inserted into and out of the housing portion is formed, whereby the engaging body that engages with the outer surface of the tube material is inserted into the through-hole of the connecting body. The pipe material can be easily and quickly detached from the receiving port. That is, in the connection body of the present invention, the pipe material can be easily detached from the receiving port without separating the connection body from the pipe joint body. Therefore, the present invention provides a connection body that can maintain the connection state of the pipe material more stably and can easily and quickly release the connection state as necessary.

The disassembled perspective view of the pipe joint and pipe material connection apparatus in one Embodiment (Example 1) of this invention. (A) The perspective view from the other end side of the connection body of the pipe joint (pipe material connection apparatus) of FIG. 1, (b) The downward perspective view from the one end side. The (a) side view of the connection body of FIG. 2, (b) AA cross-sectional view, (c) BB longitudinal cross-sectional view. The (a) top view and (b) CC side sectional drawing of the engaging body of the pipe joint (pipe material connection apparatus) of FIG. The (a) top view, (b) side view, and (c) perspective view of the water stop member of the pipe joint of FIG. The sectional side view which shows the installation structure which fixed the pipe joint of FIG. 1 to the side wall. DD sectional drawing of the installation structure of FIG. Schematic which shows the process of constructing | installing the installation structure of FIG. It is the schematic of 1 process of canceling | releasing the connection state of the pipe material of the installation structure of FIG. 6, (a) The process of removing a cover body, (b) The process of removing the cover body is shown. It is a schematic diagram which shows one process of canceling | releasing the connection state of the pipe material of the installation structure of FIG. 6, (a) The process of taking out a front-end | tip of an engaging body from a through-hole, (b) The process of pulling out an engaging body from an accommodating part is shown. It is the schematic which shows 1 process of canceling | releasing the connection state of the pipe material of the installation structure of FIG. 6, and shows the form which extracted the engaging body from the accommodating part. In the pipe connection apparatus of another embodiment (Example 2) of this invention, (a) Sectional schematic which shows the connection state of a pipe, and (b) The elements on larger scale. In the pipe connection apparatus of another embodiment (Example 2) of this invention, it is a schematic diagram which shows one process which cancels | releases the connection state of a pipe, (a) The process of taking out an engagement body front end from a through-hole, (b) The process of pulling out the united body from the container is shown. Schematic which shows the process of making a pipe material detach | leave from a receptacle in the pipe joint in another Example (modification) of invention.

  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. In addition, the vertical and horizontal directions in the present invention are merely a concept indicating a relative position, and needless to say, these can be applied interchangeably.

Example 1
FIG. 1 is an exploded perspective view of a pipe joint 100 and a pipe connecting device 101 according to an embodiment of the present invention. The pipe joint 100 is formed by combining a pipe joint main body 110, a water stop member 150, a pinching member 140, an engagement body 130, and a connection body 120 in this order from one end 100a. And the pipe connection apparatus 101 of this embodiment is provided with the connection body 120 and the engagement body 130. FIG. In addition, the pipe joint 100 illustrated here is comprised so that it may be installed in the through-hole H of the side wall W which the concrete underground burial box inclines in the water stop state. Hereinafter, each member will be described in detail with reference to FIGS.

  As shown in FIG. 1, the pipe joint body 110 is open at both ends in the (cylinder) axial direction, and has a hollow cylindrical shape extending from the base end (the other end 100b) to the tip end (the one end 100a) so as to be able to penetrate the through hole H. A cylindrical portion 111 having a flange portion 112 having a substantially circular shape in front view protruding from the tip of the cylindrical portion 111 in the radial direction, and an opening 113 formed in the approximate center of the flange portion 112. Prepare. The tubular part 111 is designed in a longitudinal shape so as to be longer than the wall thickness of the wall material (side wall W) disposed so as to penetrate therethrough. An outer peripheral screw portion 111 a to which a later-described pinching member 140 and a connecting body 120 can be screwed is formed on the outer peripheral surface of the cylindrical portion 111. Further, a saw tooth 111b is formed on the end surface of the base end of the cylindrical portion 111 to which the connecting body 120 is connected. Further, the flange portion 112 is formed in a disk shape having an outer diameter larger than the inner diameter of the through hole H.

  2A and 2B are a perspective view from the other end side and a perspective view from the one end side of the connection body 120 of the present embodiment. FIGS. 3A, 3 </ b> B, and 3 </ b> C are a side view, AA cross-sectional view, and BB cross-sectional view of the connection body 120. As shown in FIGS. 2 and 3, the connecting body 120 has a short cylindrical shape opened at both ends in the axial direction, the one end side end face 120 a is opened, and the other end side end face 120 b is provided with a pipe material P. A receiving port 121 is formed for inserting the. And the accommodating part 122 for accommodating the engaging body 130 is provided so that the said receiving port 121 may be adjoined. The housing portion 122 is a space formed by the receiving port 121, the inner peripheral surface of the connection body 120, and the convex wall portion 126 that partially protrudes along the inner peripheral surface.

  In addition, at least one (one in the present embodiment, but a plurality of rectangular lids) 123 may be integrally formed on the peripheral wall around the accommodating portion 122 so as to communicate with the accommodating portion 122. Is provided. A plurality of slits 123a are formed on the top, bottom, left, and right of the periphery of the lid body 123, and the lid body 123 is connected to the peripheral wall of the housing portion 122 by a narrow meat portion between the plurality of slits 123a. That is, the lid body 123 is provided so as to be removable from the peripheral wall of the connection body 120 by cutting the meat portion. By removing the lid 123 from the connection body 120, a through hole 128 having a width (in the axial direction) and a length (in the circumferential direction) through which the engagement body 130 can pass is formed. In other words, the lid 123 from which the through-hole 128 communicating with the housing portion 122 can be removed is closed. In addition, since the accommodating part 122 is obstruct | occluded by the cover body 123 in the connection state of the pipe material P, it is prevented that dust and dust enter | penetrate into the inside of the connecting body 120, and the engaging body arrange | positioned in the accommodating part 122 130 is protected from exposure.

  As shown in FIGS. 3B and 3C, on the inner peripheral surface of the connection body 120, the contact portion 124 is provided in the vicinity of one edge portion in the circumferential direction of the lid body 123 along the axial direction of the lid body 123. Projecting inwardly. The contact portion 124 engages with the cut surfaces 133a and 133b of the cutting portion 133 of the engagement body 130, and locks (or prevents) the rotation of the engagement body 130 in the circumferential direction and serves as positioning means for the engagement body 130. Function.

  Further, an inner peripheral screw portion 125 (as a fixed portion) corresponding to the outer peripheral screw portion 111 a of the tubular portion 111 of the pipe joint main body 110 is formed on one end side of the inner peripheral surface of the connection body 120. That is, the connection body 120 is configured to be screwable to the pipe joint main body 110. As shown in FIGS. 3B and 3C, a protrusion 127 that extends linearly along the axial direction at a position facing the lid 123 on the inner peripheral surface of the housing portion 122 of the connection body 120. Protrusions are formed. The protruding width of the protrusion 127 is smaller than the protruding width of the contact portion 124 so that the accommodated engaging body 130 is not locked.

  Further, four outward projecting portions 129 project radially from the outer surface of the peripheral wall below the accommodating portion 122 of the connection body 120 at equal intervals. That is, the outward protrusions 129 are separated from each other by about 90 degrees. The outward projecting portion 129 includes a base portion 129a extending in the circumferential direction on the one end surface 120a of the connecting body 120, and extends from a substantially center of the base portion 129a along the axial direction (substantially vertically upward) to a substantially intermediate position. And a standing portion 129b. Note that the outward projecting portion 129 makes it easy to grip the connecting body 120. When the connecting body 120 is screwed to the pipe joint main body 110, a hand or a jig is hooked on the outward projecting portion 129 to hold the connecting body 120. Can be rotated easily.

  FIG. 4 shows the engagement body 130 of this embodiment. As shown in FIGS. 4A and 4B, the engaging body 130 includes an annular belt-like body 131 having flexibility, and a plurality of locking claws 132 that protrude radially inward from the belt-like body 131. Is provided. The annular strip 131 is cut at one cut part 133 (engagement body end) in the longitudinal direction, and the first cut surface 133a and the second cut surface 133b (at one end or the other end of the engagement body). Form. The engagement body 130 can be deformed (stretched) from an annular shape to a substantially string shape so that the first cut surface 133a and the second cut surface 133b are separated from each other due to its flexibility.

  Further, when the belt-like body 131 of the engaging body 130 is wound around the outer periphery of the pipe material P, the locking claw 132 is configured to be fitted to the bellows of the outer peripheral surface of the pipe material P. When the engaging body 130 engages with the outer peripheral surface of the pipe P, the pipe P is allowed to move in the insertion direction, but the pipe P is locked so that the movement in the detachment direction is locked. The tip of the claw 132 is bent inward in the radial direction of the strip 131. That is, when the pipe member P is inserted into the receiving port 121 in a state where the engaging body 130 is disposed in the accommodating portion 122 of the connecting body 120, the engaging claws 132 are bent and deformed radially outward by contacting the bellows of the pipe material P. The tube material P can be pushed into the receiving port 121. However, even when the tube material P is pulled in the opposite direction, the locking claw 132 does not bend and deform, and the tube material P is locked, so that the tube material P is pulled out from the receiving port 121. I can't.

  As shown in FIG. 1, the pinching member 140 is formed in a short cylindrical shape that is open at both ends in the axial direction and has a circular shape when viewed from the front, and a female screw portion 141 is formed on the inner peripheral surface thereof. The female screw portion 141 corresponds to the outer peripheral screw portion 111a of the cylindrical portion 111, and the clamping member 140 can be screwed to the cylindrical portion 111 from the other end side. Further, a water stop packing 142 which is an elastic body (rubber in the present embodiment) is attached to an end face on one end side of the pressure member 140 so as to be in close contact with the outer surface of the side wall. Further, a rib 143 protruding so as to be orthogonal to the circumferential direction is formed on the outer periphery of the pinching member 140. When the pinching member 140 is rotated, a hand or a jig is caught on the rib 143, so that the screwing and pinching by the pinching member 140 can be performed quickly.

  FIG. 5 shows the water stop member 150 of the present embodiment. As shown in FIGS. 5A to 5C, the water stop member 150 has an annular shape in plan view and a substantially T shape in side view, and is formed of an elastic body (rubber in the present embodiment). Yes. The water stop member 150 extends outward from one end of the cylindrical base 151 and the base 151, and the extension width increases from one end (flange portion 112 side) to the other end (side wall W side). A flared contact piece 152 and an annular recess 153 formed between the base 151 and the contact piece 152.

  The base 151 is formed so as to be in close contact with the flat attachment surface 155 formed on the end surface on one end side thereof and the outer peripheral surface in the vicinity of the one end portion of the cylindrical portion 111 so as to come into contact with the flange portion 112. A peripheral surface 156. That is, when the inner peripheral surface 156 of the base portion 151 is in close contact with the outer peripheral surface in the vicinity of one end portion of the cylindrical portion 111 and the attachment surface 155 is in close contact with the flange portion 112, the water stop member 150 is connected to the pipe joint main body 110. It is attached in close contact. That is, the attachment surface 155 functions as a pressing surface because it is pressed against the side wall W by the flange portion 112.

  Then, the contact piece 152 having a substantially triangular shape in cross section hangs down in an oblique direction (downward and radially outward direction in FIG. 5B) so as to extend to the opposite side of the attachment surface 155 of the base 151. ing. In other words, an annular recess 153 is formed between the base 151 and the contact piece 152, which is a hem-opening space. The annular recess 153 creates a movable region of the contact piece 152, and the contact piece 152 can be elastically deformed inward and outward in the radial direction. Therefore, the other end (side wall W side) end surface of the contact piece 152 In the vicinity thereof, a contact surface 154 that is in close contact with the side wall inner surface W2 is formed. The contact surface 154 is a portion where the contact piece 152 (or the water stop member 150 is compressed and deformed) is compressed and deformed to contact the outer surface of the side wall W, and is substantially a circle extending from the end surface of the contact piece 152 to the bottom surface. An annular region. The material of the water stop member 150 is preferably an elastic body, but may be any material that can be compressed and flexibly deformed.

  In the pipe joint 100 of the present embodiment, the pipe joint main body 110, the pinching member 140 main body, the connection body 120, and the engagement body 130 are each manufactured by being integrally formed with a hard synthetic resin. Moreover, the water stop material 150 and the water stop packing 142 are formed from rubber which is an elastic body. However, the present invention is not limited to this, and those skilled in the art can arbitrarily select the material and manufacturing method thereof.

  FIG. 6 shows an installation structure 10 in which the pipe joint 100 is installed on the side wall W of a concrete underground box. As shown in FIG. 6, the side wall W has a side wall outer surface W1 constituting the outer wall surface of the underground box and a side wall inner surface W2 inclined at an inclination angle α (about 2 to 3 degrees). A through hole H is formed. The installation structure 10 of this embodiment includes a pipe joint main body 110 disposed in the through hole H of the side wall W, and is screwed to the base end of the pipe joint main body 110 outside the side wall W to connect the pipe material P to the receiving port 121. The connecting body 120, the engaging body 130 that is disposed in the housing portion 122 of the connecting body 120 and holds the pipe member P in a preventable manner, and the flange portion 112 of the pipe joint main body 110 so as to sandwich the side wall W. A pressing member 140 to be pressed, and a water stop member 150 which is compressed and deformed by the flange portion 112 and the side wall W in the space inside the side wall W and is in close contact with the side wall inner surface W2. In this installation structure 10, the side wall inner surface W <b> 2 and the flange portion 112 are stopped by the water stop member 150, and the side wall outer surface W <b> 1 and the tubular portion 111 are stopped by the water stop packing 142. Yes. Moreover, packing P1 is arrange | positioned at the outer periphery of the pipe material P, and water stops between the pipe material P outer surface and the cylindrical part 111 inner periphery. That is, the pipe joint 100 is fixed or installed in the underground box so that rainwater or the like does not enter the underground box.

  And as shown in FIG. 6, the pipe material P is connected to the pipe joint 100 of the said installation structure 10 through the receiving port 121 in the outer space of the underground burial box (on the side wall outer surface W1 side). This pipe P is a general bellows pipe provided with a plurality of irregularities in the longitudinal direction. In the present installation structure 10, the engagement body 130 is disposed in the accommodating portion 122 of the connection body 120, the belt-like body 131 of the engagement body 130 surrounds the outer periphery of the tube material P, and the locking claw 132 is in the bellows valley portion of the tube material P. It fits in. At this time, the locking claw 132 is allowed to move in the insertion direction of the tube material P, but is engaged with the tube material P so as to lock the movement of the tube material P in the disengagement direction. That is, the pipe P is engaged with the engaging body 130 and is connected to the receiving port 121 so that it cannot be removed.

  7 is a DD cross-sectional view showing a connection state of the pipe material P in which the pipe material P is connected to the pipe joint main body 110 by the connection body 120 and the engagement body 130 in the installation structure 10 of FIG. As shown in FIG. 7, in the connected state, the accommodating portion 122 is closed with a lid 123 in the circumferential direction. Then, in a state where the belt-like body 131 of the engagement body 130 surrounds the outer periphery of the pipe material P, the second cut surface 133b (one end of the engagement body) of the cutting portion 133 of the engagement body 130 is on the inner surface side of the lid body 123. It is disposed and abuts against a contact portion 124 protruding from the lid 123. That is, the position of the contact portion 124 of the connection body 120 and the position of the cutting portion 133 of the engagement body 130 are matched, and the contact portion 124 is disposed between the first and second cutting surfaces 133a and 133b. The engagement body 130 is aligned (that is, the second cut surface 133b may not be in contact with the contact portion 124 as shown in FIG. 7). In this connected state, the rotation (circulation) of the engagement body 130 in the circumferential direction in the housing portion 122 is restricted by the contact portion 124, and the engagement body 130 is closed by closing the housing portion 122. It is securely held in the housing part 122 without being exposed to the outside.

  Next, a method of installing the pipe joint 100 on the side wall W in order to construct the installation structure 10 of FIGS. 6 and 7 will be described with reference to FIG.

  First, the water stop member 150 is attached in close contact with the tubular portion 111 and the flange portion 112 of the joint body 110, and is engaged with the receiving portion 121 or the opening on the opposite side in the housing portion 122 of the connection body 120. The combined body 130 is accommodated. In addition, by assembling the water stop member 150 and the engagement body 130 to the joint body 110 and the connection body 120 in advance at the time of shipment or the like, it is possible to reduce the possibility that small parts such as the engagement body 130 are lost. Moreover, it is also possible to ship as a product in a state where the pipe P is connected to the receiving port 121. In this case, although it is advantageous in terms of product distribution, it is necessary to partially disassemble partially when installing the pipe joint.

  Then, the engaging body 130 is positioned so that the first cutting surface 133 a or the second cutting surface 133 b of the cutting portion 133 comes into contact with the contact portion 124 of the connection body 120. As will be described later, the positioning makes it easy to pull out the engagement body 130 from the hole 123 when the pipe P is separated from the receiving port 121. The engagement body 130 may be positioned by rotating the pipe P after connecting the pipe.

  Next, as shown in FIG. 8A, the tubular portion 111 is inserted into the through hole H from the side wall inner surface W2 side so that the proximal end of the tubular portion 111 of the pipe joint body 110 protrudes from the side wall outer surface W1. To do. Then, the pinching member 140 is screwed onto the base end of the tubular portion 111 from the side of the side wall outer surface W1, the flange 112 abuts on the side wall inner surface W2 via the water stop member 150, and the water stop packing 142 contacts the side wall outer surface W1. The pinching member 140 is screwed until it comes into contact. Further, the connecting body 120 is similarly screwed to the base end of the cylindrical portion 111 and firmly tightened until the convex wall portion 126 comes into contact with the end surface of the other end of the cylindrical portion 111.

  Next, when the clamping member 140 is strongly tightened, the water stop member 150 between the flange portion 112 and the side wall inner surface W2 is elastically compressed and deformed as shown in FIG. 8B. The flange portion 112 and the pressing member 140 are in close contact with the side wall inner wall W2 that is inclined at the peripheral edge of the through hole H, and so that the water blocking packing 142 is in close contact with the side wall outer surface W1 that stands upright at the peripheral edge of the through hole H. The side wall W is clamped. In this way, the installation structure 10 of the pipe joint 100 is constructed. When the pipe member P is pushed into the receiving port 121 with respect to the installation structure 10, the locking claw 132 of the engagement body 130 is bent and deformed outward in the radial direction and engaged with the bellows of the pipe member P in a state of preventing the pipe member P from coming off. Are connected to the underground box.

  Next, with reference to FIGS. 9 to 11, a method for releasing the pipe P from the receiving port 121 in order to release the connection state of the pipe P in the installation structure 10 of FIGS. 6 and 7 will be described. In addition, the method demonstrated below is a method of removing the pipe material P from the receiving port 121 without disassembling the pipe joint 100, and the labor concerning disassembly can be saved significantly.

  First, as shown in FIG. 9A, in order to remove the lid 123 from the peripheral wall of the connection body 120, a tool D having a pointed tip such as a flat-blade screwdriver is inserted into the slit 123a. Then, a force is applied to the inserted tool D to cut the meat portion between the slits 123a that join the lid 123 and the peripheral wall of the connecting body 120. As a result, as shown in FIG. 9B, the lid body 123 is removed from the connection body 120, and a through hole 128 is formed at the position where the lid body 123 was located.

  Next, as shown in FIG. 10A, the end on the second cut surface 133b side is pulled by a jig or hand through the through hole 128, and the belt-like body 131 is flexibly deformed to be stretched. The combined body 130 is pulled out from the hole 128. 10B, when the end portion of the engagement body 130 is further pulled, the belt-like body 131 expands in a longitudinal shape, and the locking claw 132 is disengaged from the bellows valley portion of the pipe P to the outside in the radial direction. However, the belt-like body 131 moves in the circumferential direction along the inner peripheral surface of the accommodating portion 122, and the engaging body 130 is pulled out from the through hole 128. By completely pulling the engagement body 130 out of the through hole 128, the engagement between the engagement body 130 and the pipe material P is released. FIG. 11 shows a state in which the engaging body 130 is completely pulled out, and the pipe P can be easily detached from the receiving port 121.

  On the other hand, when the pipe P is connected to the receiving port 121 again, the engaging body 130 is inserted into the accommodating portion 130 by inserting the end on the first cut surface 133a side through the hole 128 while flexibly deforming the engaging body 130. 122 can be rearranged at predetermined positions. Then, the pipe material P is connected and fixed to the pipe joint 100 by inserting the pipe material P into the receiving port 121. This insertion operation is possible even in a state in which the pipe P is enclosed in the receiving port 121. When the engaging body 130 is inserted into the accommodating portion 122, the pipe P is engaged with the engaging body 130 and connected to the pipe joint 100. Fixed. That is, this operation is particularly useful in situations where the pipe material P and the connection body 120 cannot be removed from the pipe joint body 110, such as a situation where the pipe material P cannot be moved in the longitudinal direction.

  Note that the method described here is merely an example, and those skilled in the art can change the order of the steps or omit unnecessary steps depending on the situation.

  Hereinafter, the effect of the pipe joint 100 (pipe material connecting apparatus 101, connection body 120) of one Embodiment which concerns on this invention is demonstrated.

  According to the pipe joint 100 (the pipe connecting device 101 and the connecting body 120) of the present embodiment, the housing portion 122 is in a connected state in which the engaging body 130 is engaged with the bellows outer surface of the pipe material P in the housing portion 122 of the connecting body 120. Is closed in the circumferential direction of the engaging body 130, so that the engaging body 130 is prevented from jumping out of the accommodating portion 122. In addition, since the contact portion 124 is formed on the lid 123, at least one of the cut surfaces 133a and 133b of the cut engagement body 130 is in contact with the contact portion 124 in the housing portion 122, so The combined body 130 is prevented from rotating in the circumferential direction. Thereby, the pipe P is prevented from rotating together with the engagement body 130, and the sense of stability of connection is increased. That is, the pipe joint 100 of the present embodiment can reliably hold the engaging body 130 in the housing portion 122 and can maintain the connected state more stably.

  Furthermore, when releasing the connection state, the cover body 123 is removed, and the engagement body 130 that engages with the outer surface of the pipe P is formed by forming a through hole 128 through which the engagement body 130 can be inserted into and out of the housing portion 122. Can be pulled out from the through hole 128 of the connecting body 120 and can be easily and quickly detached from the receiving port 121. That is, by pulling the cut end portion of the engagement body 130 from the through hole 128 with a jig or by hand, the engagement body 130 is flexibly deformed and the engagement of the tube member P and the locking claw 132 is released. Can be pulled out from the accommodating portion 122 of the connection body 120. Accordingly, the pipe member P can be easily detached from the receiving port 121 without disassembling the connection body 120 and the pipe joint main body 110 apart. Further, in the connected state, the engaging body 130 is positioned so that the cut surfaces 133a and 133b of the engaging body 130 can come into contact with the contact portion 124. By this positioning, when the lid 123 is removed and the engaging body 130 is pulled out from the connecting body 120, the end portion of the engaging body 130 can be easily grasped from the through hole 128, and the detachment work of the tube material P can be further accelerated. To do. Therefore, the pipe joint 100 of the present embodiment can maintain the connection state of the pipe material P more stably and can easily and quickly release the connection state as necessary.

(Example 2)
With reference to FIG.12 and FIG.13, the pipe joint 200 and the pipe material connection apparatus 201 of another embodiment of this invention are demonstrated. The pipe joint 200 according to the second embodiment includes a pipe joint main body 210, a connection body 220, an engagement body 230, a pinching member 240, and a water stop member 250. The pipe connection device 201 includes a connection body 220 and an engagement body 230. A part of the configuration of the pipe connection device 201 (the connection body 220 and the engagement body 230) of the present embodiment is different from the pipe connection device 101 of the first embodiment. On the other hand, the pipe joint main body 210, the pinching member 240, and the water stop member 250 of the pipe joint 200 of the second embodiment are common to the pipe joint main body 110, the pinching member 140, and the water stop member 150 of the pipe joint 100 of the first embodiment. Therefore, description of common members is omitted.

  12A and 12B are a cross-sectional view and a partially enlarged view of a state in which the pipe material P is connected to the pipe joint 200. FIG. As shown in FIG. 12, the connection body 220 of the pipe material connection device 201 of the second embodiment has basically the same structure as the connection body 120 of the first embodiment, but the lid body 223 and the contact portion 224 are arranged. The structure is different. That is, in the connection body 220 of the present embodiment, the abutting portion 224 is larger than the abutting portion 124 and protrudes inward from the lid 223. The contact portion 224 has an engagement hole (engagement portion) 224a. On the other hand, the engaging body 230 of the pipe material connecting device 201 of the second embodiment includes a belt-like body 231, a locking claw 232, and a cutting portion 233, similar to the engaging body 130 of the first embodiment. A hook-like engagement claw 234 is formed to protrude from one cut surface 233b of the cut portion 233 of the engagement body 230. As shown in FIG. 12B, in the connected state of the pipe material P, the engagement claw 234 of the engagement body 230 is engaged (or latched) with the engagement hole 224a of the contact portion 224 on one end side of the engagement body. Yes.

  In the pipe material connecting device 201, as shown in FIG. 13A, when the lid body 223 is removed from the peripheral wall of the connection body 220 in order to release the connection of the pipe material P, the engagement body 230 connected to the lid body 223 The cut surface 233b extends to the outside through the through hole 228 together with the lid 223. Since one end of the engagement body 230 is connected to the contact portion 234 by the engagement portion (engagement convex portion 234), the engagement body 230 is accommodated by pulling one end of the engagement body 230 together with the lid 233. It can be easily pulled out from the portion 232 through the through hole 228. Therefore, the pipe connection device 201 of the present embodiment can release the connection state of the pipe P more easily and quickly. Even if the engaging portion is not formed at one end of the engaging body as in the present embodiment, the same effect can be achieved if the engaging portion is formed near one end or “one end side of the engaging body”. be able to.

(Modification)
The form of the pipe joint, the pipe connection device and the connection body of the present invention is not limited to the above embodiment. That is, the pipe joint of the present invention only needs to include at least a connection body, an engagement body, and a pipe joint main body. For example, the pinching member 140 and the water stop member 150 of Example 1 may be arbitrarily omitted. Further, the pipe joint or the pipe joint main body of the present invention is not limited to the form of the present embodiment, and may be a form of a piping box or a connector. That is, it goes without saying that the technical idea of the present invention can be applied to any use for connecting pipe materials.

  Moreover, the shape of the pipe connection device or connection body of the present invention can be arbitrarily changed. For example, in the pipe connection device 301 of FIG. 14, the connection body 320 is not a cylinder but a rectangular cylinder, and the engagement body 330 has a rectangular annular outer shape instead of a ring. That is, the connection body 320 of the present modification is configured to be able to connect a rectangular tube material, and also in this modification, as shown in FIGS. 14A to 14C, the connection body 320 is bent so as to stretch the engagement body 330. By deforming, it can be pulled out from the through hole 323 of the connection body 320. In addition, it is preferable that the four corners of the engagement body 330 are curved in an arc shape so that the engagement body 130 is pulled out and inserted. That is, the engagement body of the present invention may be an annular belt-like body, and is not limited to an annular shape as in the above-described embodiment. Selectable.

  And in the pipe joint 100 of the said embodiment, although a pipe joint main body and a connection body are comprised as a different body, the form of the pipe joint of this invention is not limited to the said embodiment. That is, in the pipe joint of the present invention, the connection body and the pipe joint main body may be integrally formed. Because the present invention can release the connection state of the pipe material without separating the pipe joint body and the connection body by pulling out the engagement body through the through hole. This is because there is no problem in disconnecting the pipe material even if they are integrated. In such an integrated form, the number of parts can be reduced and the manufacturing cost can be further reduced.

  Furthermore, in the pipe connection device 101 of the above embodiment, the lid 123 is integrally provided on the peripheral wall of the connection body 120, but the form of the pipe connection device of the present invention is not limited to the above embodiment. That is, the lid of the present invention may be removable from the connection body. For example, the lid body of the present invention only needs to be removable when the pipe connection is released, and includes a cover that is fitted to the periphery of the through hole and selectively closes the through hole.

  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.

DESCRIPTION OF SYMBOLS 10 Installation structure 100 Pipe joint 100a One end 100b Other end 101 Pipe connection apparatus 110 Pipe joint main body 111 Cylindrical part 111a Peripheral screw part 111b Serrated tooth 112 Flange part 120 Connection body 121 Receptacle 122 Storage part 123 Cover body 123a Slit 124 Contact part 125 Inner thread (fixed part)
126 convex wall portion 127 ridge 128 through hole 129 outward projecting portion 130 engaging body 131 band-like body 132 locking claw 133 cutting portion 140 pinching member 150 water-stopping member 201 pipe connection device (Example 2)
224a engagement hole (engagement part)
234 Engagement claw W Side wall W1 Side wall outer surface W2 Side wall inner surface H Through hole P Tube material

Claims (5)

An annular belt-like body that is partly cut in the circumferential direction and that can be expanded and deformed in the circumferential direction, and an engagement body that has a locking claw that projects from the belt-like body and engages with the outer surface of the connected pipe material,
A receiving port into which the tube material is inserted, a receiving portion formed inside the receiving port and capable of receiving the engaging body, and a through hole for inserting the engaging body into and out of the receiving portion are removed. A connection body having a lid formed in a possible manner,
The tube member connecting device according to claim 1, wherein the lid is provided with a contact portion that abuts one end of the engagement body in the housing portion and restricts the rotation of the engagement body in the circumferential direction.   The engagement portion that engages with one end side of the engagement body is provided in the contact portion, and one end side of the engagement body is pulled out from the through hole by removing the lid body. 1. The pipe connection device according to 1.   3. The pipe connection device according to claim 1, wherein the lid is integrally formed on a peripheral wall of the housing portion, and a slit is formed around the lid. 4.   A pipe joint main body and the pipe material connecting device according to any one of claims 1 to 3, wherein the connection body is attached to a proximal end of the pipe joint main body in an integral or removable manner. Characteristic pipe joint. A connecting body for connecting a pipe material to a pipe joint body,
A receptacle into which the pipe is inserted,
An annular belt-like body that is partly cut in the circumferential direction and can be expanded and deformed in the circumferential direction, and an engagement body that protrudes from the belt-like body and has a locking claw that engages with the outer surface of the pipe member, A receiving portion formed inside the receptacle;
A lid formed so as to be removable so as to form a through-hole for inserting the engaging body into and out of the housing portion;
An abutting portion provided on the lid, wherein one end of the engaging body abuts within the accommodating portion, and restricts rotation of the engaging body in the circumferential direction;
And a fixing part for fixing to the pipe joint main body.

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