JP2007292270A - Movement prevention means for fluid conduit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a movement prevention means for fluid conduits capable of preventing relative movement of a socket end and a spigot end nearly equally in both directions along the axes of the conduits. <P>SOLUTION: The movement prevention means comprises an engagement portion 20 that makes contact with an outer surface of the fluid conduit 11, a recess portion 16 opened toward the outer surface of the fluid conduit 11 and receiving the engagement portion 20 therein, and a stopper portion 15b formed contactably with a top end face 5b of the socket end 5. The engagement portion 20 includes a first claw 20a to engage with the outer surface of the fluid conduit 11 and a second claw 20b to engage with the outer surface of the fluid conduit 11. The first claw 20a and the second claw 20b are formed generally symmetrically with respect to an orthogonal plane D substantially orthogonal to the conduit axis C. The engagement portion 20 is received in the recess portion 16 inclinedly so that the first claw 20a or the second claw 20b bites into the outer surface of the fluid conduit 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, a part of the outer peripheral surface of the receiving port in one fluid pipe is formed in a bulging portion that bulges outward, the insertion port in the other fluid pipe is connected to the receiving port, A push ring attached to the other fluid pipe in the vicinity of the outer end has an engaging portion hooked to the bulging portion of the receiving port, and the engaging portion causes the inner surface of the receiving port and the outer surface of the insertion port to A sealant is inserted in a watertight manner along the circumferential direction between the press ring and the receiving port so as not to be separated from each other in the tube axis direction. The present invention relates to a fluid pipe movement preventing means for preventing relative movement with respect to an insertion opening.

  A normal fluid pipe has a straight part or a bent part that bends along a pipe axis in a part of a pipe line, and an insertion port and a receiving port that constitute the fluid pipe are appropriately connected at the straight part or the bent part. However, due to the water pressure in the pipe and the dynamic pressure due to the water flow, the fluid pipe in the vicinity of the bent portion moves in the pipe axis direction, so that the fluid pipe comes into contact with another adjacent pipe member or is inserted. And the receiving port may be separated or abutted inside. In addition, when an unpredictable external force due to an earthquake or the like is applied, the fluid pipe also moves in the straight line portion in the same manner, which may cause damage to the piping member or leakage of fluid in the pipe.

  The conventional fluid pipe movement preventing means for preventing such movement of the fluid pipe is provided, for example, in a press ring as a connection portion between the receiving opening and the insertion opening constituting the fluid pipe. The fluid pipe is prevented from moving in one direction of the pipe axis that is separated from each other (see, for example, Patent Document 1).

Japanese Examined Patent Publication No. 3-13470 (page 2, FIG. 3)

  However, in Patent Document 1, the movement prevention means of the fluid pipe can prevent the movement of the fluid pipe in one direction of the pipe axis in which the receiving port and the insertion port constituting the fluid pipe are separated from each other. In the other direction of the tube shaft in which the receiving port and the insertion port are further inserted in the direction opposite to the separating direction, the movement of the fluid tube cannot be prevented, and this movement causes the distal end surface of the insertion port to move inside the fluid tube. And the back end face of the receiving port abut, causing damage to the piping member.

  The present invention has been made paying attention to such problems, and provides a fluid pipe movement preventing means capable of preventing relative movement between the receiving port and the insertion port in the same direction in both directions along the tube axis. With the goal.

In order to solve the above-mentioned problem, the fluid pipe movement preventing means according to claim 1 of the present invention is formed in a bulging portion in which a part of the outer peripheral surface of the receiving port in one fluid pipe bulges outward. An insertion port in the other fluid pipe is connected to the receiving port, and a push ring attached to the other fluid pipe in the vicinity of the outer end of the receiving port is hooked on the bulging portion of the receiving port. And a sealing material is fitted in a watertight manner along the circumferential direction between the inner surface of the receiving port and the outer surface of the insertion port. A fluid pipe movement preventing means that is held so as not to be separated from the opening in the tube axis direction, is provided on the push wheel, and prevents relative movement between the receiving port and the insertion port in both directions of the tube axis. ,
A locking portion that locks with the outer surface of the other fluid pipe, a recess that opens toward the outer surface of the other fluid pipe and accommodates the locking portion therein, and a front end surface of the receiving port. And a stopper portion extending to
A first claw that engages with the outer surface of the other fluid pipe; and a second claw that is spaced apart from the first claw in the pipe axial direction and engages with the outer surface of the other fluid pipe. The first claw and the second claw have a substantially symmetrical shape about an orthogonal plane that is substantially orthogonal to the tube axis, and the locking portion tilts in the recess, and the first claw Alternatively, the engaging portion is accommodated in the recess so that the second claw bites into the outer surface of the other fluid pipe.
According to this feature, the engaging portion is engaged with the bulging portion of the receiving port as a reaction force, or the stopper portion is brought into contact with the front end surface of the receiving port as a reaction force so that the locking portion accommodated in the recess is By tilting, the first claw or the second claw bites into the outer surface of the other fluid pipe to sufficiently lock the fluid pipe, and the relative movement between the receiving port and the insertion port in both directions of the tube axis is prevented. . In particular, since the first claw and the second claw are substantially symmetrical with respect to the orthogonal plane, not only can the movement preventing function of the same degree be exhibited in both directions along the tube axis, but also the locking portion. Easy to manufacture and install.

The fluid pipe movement preventing means according to claim 2 of the present invention is the fluid pipe movement preventing means according to claim 1, wherein the engaging portion is hooked on the bulging portion of the receiving port. It has a predetermined slide length in the tube axis direction between the latching position and the abutting position where the stopper portion abuts on the front end surface of the receiving port.
According to this feature, the movement preventing means provided in the other fluid pipe can move relative to the receiving port in the tube axis direction along with the inserting port. Can be allowed to have mobility.

The fluid pipe movement prevention means according to claim 3 of the present invention is the fluid pipe movement prevention means according to claim 2, wherein the receiving port and the insertion port are connected at the connection position. The distal end surface of the insertion port connected to the receiving port and the inner end surface formed inward of the receiving port are spaced apart with a predetermined length in the tube axis direction, and the slide length is It is characterized by being formed shorter than the separated length.
According to this feature, since the slide length is shorter than the distance between the distal end surface of the insertion port and the back end surface of the receiving port, the movement preventing means slides in the tube axis direction together with the insertion port. Even if it moves relative to the receiving port by the length, the fluid pipe can be prevented from being damaged without the front end surface of the insertion port and the back end surface of the receiving port contacting each other.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an installation state of fluid pipes in the embodiment of the present invention. FIG. 2A is a partial cross-sectional view showing a fluid pipe movement preventing means, and FIG. 2B is a cross-sectional view taken along line AA in FIG. FIG. 3A is an enlarged view of the dotted line encircled portion in FIG. 2A, and FIGS. 3B, 3C, and 3D are enlarged views showing the tilting state of the locking portion over time. is there. FIG. 4 is a partial cross-sectional view showing the movement preventing means at the contact position.

  As shown in FIG. 1, the fluid pipe in the present invention is a pipe buried in the ground, and has a receiving port 5 formed at an end of one water pipe 2 (curved pipe) and the other. The connection location where the insertion port 12 formed in the edge part of the water pipe 11 (straight pipe) was connected watertightly is comprised. A gas pipe 4 is installed adjacent to the fluid pipe.

  The fluid pipe of the present embodiment constitutes a water supply pipe, and the water flows down in the direction of the white arrow in the figure. The water pipe 2 is a curved pipe and has a bent portion 3 that bends along the pipe axis C in a predetermined manner. Thus, in the bent part 3 or the straight part, an external force that cannot be predicted due to the water pressure of the internal fluid of the fluid pipe, the dynamic pressure due to the water flow, or an earthquake acts, for example, the connection between the receiving port 5 and the insertion port 12 is disconnected. As a result, the internal fluid may leak out, or the fluid pipe may move and come into contact with, for example, the adjacent gas pipe 4.

  The fluid pipe movement prevention means of the present invention is installed at the connection part of the water pipe in the vicinity of the bent part 3. As shown in FIG. 2 (a), the movement preventing means is provided on a pusher wheel 13 installed along the outer peripheral surface of the water pipe 11 in the vicinity of the end of the receiving port 5. It has a split structure and is connected by bolts and nuts 9, and is prevented from moving in the direction of the pipe axis C with respect to the fluid pipe. The movement preventing means includes a locking portion 20 that locks with the outer surface of the water pipe 11, and a recess 16 that opens toward the outer surface of the water pipe 11 along the inner peripheral surface and accommodates the locking portion 20 therein. Has been.

  In addition, a part of the outer peripheral surface of the receiving port 5 in the water pipe 11 is formed in a bulging portion 5 a that bulges outward, and a press ring 13 attached to the water pipe 11 in the vicinity of the outer end of the receiving port 5 includes a receiving ring 13. A bolt nut 14 is provided as an engaging portion that is hooked on the bulging portion 5 a of the mouth 5, and the bolt and nut 14 extends along the circumferential direction between the inner surface of the receiving port 5 and the outer surface of the insertion port 12. A so-called K-type joint is formed, in which the sealing material 8 is fitted in a watertight manner, and the pusher wheel 13 and the receiving port 5 are held so as not to be separated in the direction of the tube axis C.

  Furthermore, between the front end surface 12a of the insertion port 12 connected to the receiving port 5 and the back end surface 5c formed inside the receiving port 5 at the connection position where the receiving port 5 and the insertion port 12 are connected. Are spaced apart with a predetermined length R in the direction of the tube axis C.

  As shown in FIG. 2 (b), the recess 16 is partitioned by partition walls 15 c in the circumferential direction along the inner peripheral surface of the press wheel 13, and is formed at six locations. Is fitted. The locking part 20 has a first claw 20a and a second claw 20b formed in an arc shape having substantially the same diameter as the outer diameter of the water pipe 11 to lock the outer surface of the water pipe 11, and the partition wall 15c and rubber. It is connected via the body 18 and is fitted in the recess 16. In addition, about the quantity of a recessed part and a latching | locking part, it is not restricted to a present Example, It should just be provided along the circumferential direction of a fluid pipe | tube.

  Further, the push wheel 13 is hooked by the bolt nut 14 along the circumferential direction with the bulging portion 5a of the receiving port 5 so that movement in one direction (left direction in the drawing) of the tube axis C is prevented. Yes. Further, a stopper portion 15b formed so as to be able to come into contact with the front end surface 5b of the receiving port 5 is extended, and the other end of the tube shaft C is brought into contact with the front end surface 5b of the receiving port 5 along the circumferential direction. Movement in the direction (right direction in the figure) is prevented. As will be described later, the movement prevention means 15 can move relative to the receiving port 5 together with the water pipe 11 by a predetermined length in the direction of the pipe axis C and prevent movement of the fluid pipe in both directions of the pipe axis C. ing.

  As shown in FIG. 3 (a), the locking portion 20 includes a first claw 20a extending toward one direction (the left direction in the drawing) of the tube axis C and locking with the outer surface of the water pipe 11, and a tube shaft. It has the 2nd nail | claw 20b latched with the outer surface of the water pipe 11 extended toward the other direction (right direction of illustration) of C. The locking portion 20 is accommodated in the recess 16 so that the first claw 20a or the second claw 20b can tilt. The first claw 20a or the second claw 20b is not necessarily extended in one direction or the other direction of the tube axis C, but extends in the orthogonal direction toward the tube axis C. May be.

  Further, the first claw 20a and the second claw 20b are formed in a substantially symmetrical shape with an orthogonal plane D substantially orthogonal to the tube axis C as a center. By doing in this way, manufacture and attachment work of the latching | locking part 20 are easy.

  Next, the locking part 20 is pressed toward the outer surface of the water pipe 11 by the inner bottom surface 16c of the recess 16, and the first claw 20a and the second claw 20b of the locking part 20 are pressed by this pressing force. It bites into the outer surface of the water pipe 11 and prevents movement of the water pipe 11 in the direction of the tube axis C as will be described later. In addition, a gap K and a gap K ′ having a predetermined length are formed on both the left and right sides in the tube axis C direction of the recess 16 in which the locking part 20 is accommodated.

  The operation of the locking portion 20 will be described. Due to the water pressure in the water pipe 11 and the dynamic pressure due to the water flow at the position as shown in FIG. 3A, as shown in FIG. The pipe 11 moves in one direction of the pipe axis C (indicated by the white arrow in the figure), and the engaging portion 20 that has been engaged with the outer surface of the water pipe 11 moves in one direction of the pipe axis C (in the direction indicated by the white arrow in the figure). ) To the gap K. By this movement, the gap K described above is filled, and a gap K ″ is formed on the right side of the locking portion 20 in the figure.

  Next, as shown in FIG. 3C, the locking portion 20 that has moved by the gap K in one direction of the tube axis C comes into contact with the tapered surface 16 a of the recess 16, and the pusher wheel 13 is moved toward the tube axis C. Press in one direction. By this pressing, as shown in FIG. 2 (a), the presser wheel 13 is moved by a predetermined length in one direction (the left direction in the drawing) of the tube axis C, and the bolt nut 14 is connected to the bulging portion 5 a of the receiving port 5. By abutting, movement in the tube axis C direction is prevented.

  Further, as shown in FIGS. 3C and 3D, the water pipe 11 moves in the direction of the pipe axis C, and the second claw 20 b of the locking portion 20 tilts toward the outer surface of the water pipe 11. (See the black arrow in the figure). Thus, when the 2nd nail | claw 20b of the latching | locking part 20 latches to the water pipe 11, and the water pipe 11 is going to move relatively to a pipe-axis C direction with respect to a movement prevention means, the latching | locking part 20 is Since the second claw 20b bites into the outer surface of the water pipe 11 using the accommodated recess 16 as a reaction force, the water pipe 11 can be prevented from moving relative to the push wheel 13 in both directions of the pipe axis C.

  In particular, as shown in FIG. 3 (d), when the water pipe 11 is about to move relative to the movement preventing means in the direction of the pipe axis C, the locking portion 20 tilts in the recess 16. Since the reaction force is taken by using the inner walls 16a and 16c of the recess 16 and the second claw 20b is likely to bite into the outer surface of the water pipe 11, the movement of the water pipe 11 can be reliably prevented.

  The locking portion 20 is easily tilted by using the gap K having a predetermined length, and the first claw 20a and the second claw 20b easily bite into the outer surface of the water pipe 11, and further prevent the water pipe 11 from moving. Increases effectiveness.

  Moreover, the inner surface of the recessed part 16 is formed in the taper surfaces 16a and 16b which expand toward an opening, By using this, the taper surfaces 16a and 16b which expand toward an opening are utilized. The locking part 20 is easy to tilt.

  The inner surface of the recess 16 is not limited to the tapered surfaces 16a and 16b described above. For example, a bulge that bulges in the direction of the tube axis C is provided on the inner surface of the recess 16. Also good. By doing in this way, the latching | locking part 20 contact | abuts with the bulging part trying to move to the pipe-axis C direction with the water pipe 11, and the 1st nail | claw 20a or the 2nd nail | claw 20b can use an bulging part as a fulcrum easily. Therefore, the water pipe 11 can be locked by biting into the outer surface of the water pipe 11. Furthermore, the inner surface may be formed on the tapered surfaces 16a and 16b described above, and a bulging portion may be provided. By doing in this way, the 1st nail | claw 20a or the 2nd nail | claw 20b becomes easier to tilt.

  As shown in FIG. 4, when the water pipe 11 moves in the other direction (right direction in the drawing) of the pipe axis C in the opposite direction of the pipe axis C described above, the locking portion 20 is the same as described above. The pusher wheel 13 is prevented from moving in the direction of the tube axis C when the stopper portion 15b comes into contact with the front end surface 5b of the receiving port 5. Moreover, the 1st nail | claw 20a tilts and it bites into the outer surface of the water pipe 11, and the water pipe 11 is latched.

  By doing in this way, the sealing material 8 fitted in a watertight manner between the inner surface of the receiving port 5 and the outer surface of the insertion port 12 is moved along with the relative movement between the receiving port 5 and the insertion port 12. It is possible to prevent the possibility of water leakage and the like from being deformed by being drawn inward.

  Since the first claw 20a and the second claw 20b are substantially symmetrical with respect to the orthogonal plane D, the same degree of movement prevention function can be exhibited in both directions along the tube axis C.

  In this way, the flange portion 15a is hooked on the bulging portion 5a of the receiving port 5 as a reaction force, or the stopper portion 15b is brought into contact with the front end surface 5b of the receiving port 5 and accommodated in the recess 16 as a reaction force. When the locking portion 20 tilts, the first claw 20a or the second claw 20b bites into the outer surface of the water pipe 11 to sufficiently lock the water pipe 11, and is inserted into the receiving port 5 in both directions of the pipe axis C. Relative movement with the mouth 12 is prevented.

  As shown in FIG. 2 (a), the movement preventing means includes a latching position where the bolt nut 14 latches on the bulging portion 5a of the receiving port 5, and a stopper portion 15b as shown in FIG. It has a predetermined slide length in the direction of the tube axis C between the abutment position where it abuts on the front end surface 5b of the port 5, and in this way, movement prevention means provided on the water pipe 11 However, since it can move relative to the receiving port 5 with the slide length S in the direction of the tube axis C together with the insertion port 12, the relative movement between the insertion port 12 and the reception port 5 can be allowed and mobility can be provided. .

  The slide length S is shorter than the distance R between the distal end surface 12 a of the insertion opening 12 and the rear end surface 5 c of the receiving opening 5. In this way, even if the movement preventing means moves relative to the sliding length S receiving port 5 in the direction of the tube axis C together with the insertion port 12, it has a separated length R '. Further, the water pipes 2 and 11 can be prevented from being damaged without the front end surface 12a of the insertion port 12 and the back end surface 5c of the receiving port 5 coming into contact with each other.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above embodiment, the internal fluid of the fluid pipe is the water supply, but it may be a sewer, and acts on the fluid pipe in the axial direction due to the water pressure in the pipe or the dynamic pressure due to the water flow. If so, the fluid pipe movement prevention means of the present invention can be applied in addition to the bent portion in the present embodiment.

It is a top view which shows the installation condition of the fluid pipe | tube in the Example of this invention. (A) is a fragmentary sectional view which shows the movement prevention means of a fluid pipe | tube, (b) is AA sectional drawing of (a). (A) is an enlarged view of the dotted line enclosing part of FIG. 2 (a), (b), (c), (d) is an enlarged view which showed the tilting condition of the latching | locking part with time. It is a partial cross section figure which shows the movement prevention means in a contact position.

Explanation of symbols

2 Water pipe (fluid pipe)
3 bent portion 4 gas pipe 5 receiving port 5a bulging portion 5b distal end surface 5c deep end surface 8 sealing material 9 bolt nut 11 water pipe (fluid pipe)
12 Insert 12a Tip surface 13 Pusher wheel 14 Bolt nut
15b Stopper portion 15c Partition wall 16 Recessed portion 16a Tapered surface 16b Tapered surface 16c Inner bottom surface 18 Rubber body 20 Locking portion 20a First claw 20b Second claw C Pipe axis D Orthogonal surface K, K ', K''Gap R Spaced Length S Slide length

Claims (3)

A part of the outer peripheral surface of the receiving port in one fluid pipe is formed in a bulging portion that bulges outward, and an insertion port in the other fluid pipe is connected to the receiving port, and the outer end of the receiving port A push ring attached to the other fluid pipe in the vicinity has an engaging portion hooked to the bulging portion of the receiving port, and the engaging portion allows the inner surface of the receiving port and the outer surface of the insertion port to be engaged. A sealing material is inserted in a watertight manner along the circumferential direction between the press ring and the receiving port so as not to be separated in the tube axis direction. A fluid pipe movement preventing means for preventing relative movement between the receiving port and the insertion port in both directions,
A locking portion that locks with the outer surface of the other fluid pipe, a recess that opens toward the outer surface of the other fluid pipe and accommodates the locking portion therein, and a front end surface of the receiving port. And a stopper portion extending to
A first claw that engages with the outer surface of the other fluid pipe; and a second claw that is spaced apart from the first claw in the pipe axial direction and engages with the outer surface of the other fluid pipe. The first claw and the second claw have a substantially symmetrical shape about an orthogonal plane that is substantially orthogonal to the tube axis, and the locking portion tilts in the recess, and the first claw Alternatively, the fluid pipe movement preventing means is characterized in that the locking portion is accommodated in the recess so that the second claw bites into an outer surface of the other fluid pipe.   A predetermined slide in the tube axis direction between a latching position where the engaging portion is latched by the bulging portion of the receiving port and a contact position where the stopper unit is in contact with the front end surface of the receiving port. 2. The fluid pipe movement preventing means according to claim 1, which has a length. At the connection position where the receiving port and the insertion port are connected, the distal end surface of the insertion port connected to the receiving port and the back end surface formed inward of the receiving port are in the tube axis direction. 3. The fluid pipe movement preventing means according to claim 2, wherein the fluid pipe is separated by a predetermined length, and the slide length is shorter than the separated length.

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