JP2009243681A - Fluid tube closure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid tube closure capable of effectively and efficiently preventing occurrence of damage accompanying a drop of closing performance. <P>SOLUTION: This closure is provided with a plug member 2 capable of closing a tip part p2 of a fluid pipe P in an adhering condition, and an operation member 3 making the plug member 2 adhere to the tip part p2 of the fluid pipe P by moving and operating the plug member 2 to the fluid pipe P side with pressing the plug member 2. The closure is provided with a marking means M putting marks for judging number of times of use on the plug member 2 or the operation member 3, or both members 2, 3 by operation force to the operation member 3 when the plug member 2 is moved and operated to the fluid pipe P side by the operation member 3, and press force to the plug member 2 generated with accompanying movement operation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fluid tube closing tool used to close the distal end portion of a fluid tube such as a water supply / drainage tube, a hot water supply tube, a gas tube, a chemical solution transport tube, or a drainage transport tube.

  Conventionally, as this type of fluid tube closing device, a rubber packing made of synthetic rubber as a plug member made of an elastomer material, and an operation member that can be clamped and operated from the axial direction of the tube inside the fluid tube What is comprised from the metal clamping mechanism is known. In other words, the fluid tube obturator is in a state where the outer peripheral surface of the rubber packing and the inner peripheral surface of the fluid tube are pressure-bonded by pressing the rubber packing from the axial direction of the tube inside the fluid tube by the clamping mechanism. The rubber packing is expanded and expanded until the tip of the fluid pipe is closed.

  However, in the conventional fluid pipe obturator as described above, since it is difficult to judge the degree of deterioration of the plug member and the operation member, even if the obstruction performance is insufficient due to deterioration due to use, the installer uses it. As a result, there is a problem that damage such as water wetting is likely to occur inside the building.

  The present invention has been made in view of the above-described circumstances, and its main problem is to provide a fluid pipe obturator that can effectively and efficiently prevent the occurrence of damage due to a decrease in the occlusion performance. There is in point to do.

A first characteristic configuration of the present invention relates to a fluid pipe obturator, and the characteristic is
A plug member capable of closing the distal end portion of the fluid pipe in a close contact state, and an operation member for moving the plug member toward the fluid pipe while pressing the plug member to bring the plug member into contact with the distal end portion of the fluid pipe. And
When the operating member is operated to move the plug member toward the fluid pipe, the operating force is applied to the operating member, or the mark for determining the number of times of use is determined by the pressing force applied to the plug member generated by the moving operation. Or the marking means attached | subjected to these both members exists in the point.

  According to the above configuration, when the operating member is brought into intimate contact with the plug member and the tip of the fluid pipe, that is, when used, a mark for determining the number of times of use is provided on the plug member or the operating member or both members by the marking means. Because it is automatically attached, the next time it is used, it is possible to determine the degree of deterioration by checking the mark for determining the number of times of use and to determine whether it can be used, thereby reducing the blocking performance. The accompanying damage can be effectively and efficiently prevented.

  In addition, for example, it is possible to set the quality assurance limit on the producer side by the number of times (for example, once), and even if damage occurs due to the deterioration of the blocking performance, the producer side and the constructor side It is easy to determine which is responsible for compensation.

The second feature configuration of the present invention is a configuration suitable for the implementation of the first feature configuration.
The marking means is used for the first time when the close contact state between the plug member and the tip of the fluid pipe is first shown, and then the second use when the close contact state between the plug member and the tip end of the fluid pipe is shown. It is in the point which is comprised so that the said different mark may be attached | subjected.

  According to the above configuration, it is possible to quickly and surely determine whether it has already been used once or twice, and it is possible to more effectively and efficiently generate damage due to a decrease in the blocking performance. Can be prevented.

The third characteristic configuration of the present invention is a configuration suitable for the implementation of the second characteristic configuration.
In configuring the marking means,
When one of the plug member and the operation member is operated to move the plug member continuously toward the fluid pipe by the operation member, the operation transmitted from a receiving portion formed on the other of the plug member and the operation member is transmitted. A first convex portion that shears and separates as the mark as the force or the pressing force increases, and a plug member and a tip of the fluid pipe through the first convex portion in contact with and support the separated first convex portion A second convex portion is formed for receiving the operating force or the pressing force transmitted from the receiving portion until the two are in close contact with each other;
Between the opposing surfaces of the second convex part and the receiving part, the second convex part and the receiving part in a state where the first convex part is not interposed by the moving operation in a state where the first convex part is dropped. A third protrusion that is broken or deformed as the mark by the operating force or the pressing force by contact with the
When the second convex portion and the receiving portion come into contact with the first convex portion through the first convex portion by the moving operation, the third convex portion is destroyed by the operating force or the pressing force. Or it is in the point in which the penetration part which a 3rd convex part penetrates is formed so that it may not change.

  According to the above configuration, it is possible to obtain the function of attaching the mark different between the one-time use and the second-use with a simple structure, and more efficiently prevent the occurrence of damage due to the deterioration of the blocking performance. be able to.

The fourth characteristic configuration of the present invention is a configuration suitable for the implementation of the third characteristic configuration.
The plug member is configured in a shape that can be disposed inside the fluid pipe,
The operation member can be disposed outside the fluid pipe in a state in which the plug member is disposed inside the fluid pipe, and has a pressing surface portion that presses the pressed surface portion of the plug member toward the fluid pipe. Configured,
A groove portion having an annular opening capable of receiving a tip end of a fluid pipe is formed between the plug member and the operation member,
On the inner peripheral surface of the operation member, the distal end portion of the fluid pipe is inserted into the outer peripheral surface of the fluid pipe while being bitten into the outer peripheral surface of the fluid pipe by rotating the operation member in the pipe circumferential direction from the state where the distal end portion of the fluid pipe is inserted into the opening. A thread-shaped guide convex portion for moving and guiding the operating member to the fluid pipe side in a form in which the bottom portion of the groove portion is moved relatively close to each other is formed.
The pressed surface portion of the plug member is formed to protrude in a state where the first convex portion and the second convex portion are dispersed and aligned in the pipe circumferential direction,
In the pressing surface portion of the operation member, a partial annular entering space is formed in which the first convex portion and the second convex portion enter in a normal posture for fluid pipe closing in surface contact with the pressed surface portion,
The receiving portion is constituted by a pipe circumferential end edge portion of the entry space.

  According to the above configuration, the function of attaching different types of marks for the one-time use and the two-time use can be obtained even more efficiently. Can be prevented.

The fifth characteristic configuration of the present invention is a configuration suitable for the implementation of the fourth characteristic configuration.
The second convex portion is deformed or broken by the pressing force when the plug member is moved to the fluid pipe side in an irregular posture in which the second convex portion is displaced from the entrance space in the pipe circumferential direction. The fourth convex portion is formed.

  According to the above configuration, since the mark for determining the number of times of use is attached even in the non-regular use different from the normal posture, it is possible to prevent unauthorized use of cheating the number of uses with high accuracy.

The sixth characteristic configuration of the present invention is a configuration suitable for the implementation of the first characteristic configuration.
When the operating member is operated to move the plug member toward the fluid pipe, engagement means for engaging the plug member and the operating member in a plurality of operation postures in which the relative postures of the plug member and the operating member are different is provided. And
The marking means attaches the mark to a plurality of positions corresponding to each of the operation postures in one of the plug member and the operation member when the operation member moves the plug member toward the fluid pipe. It is in the point which is comprised.

  According to the above configuration, when the plug member is moved to the fluid pipe side by the operation member, one of the plug member and the operation member has a plurality of positions corresponding to the operation postures by the engaging means. Since the mark is attached, for example, when used for a plurality of times, it is possible to determine the number of times of use even when used next time by setting the operation posture different from the previous time. It is also possible to increase the degree of freedom in setting the number of times of use as a guide for the degree of deterioration.

The seventh characteristic configuration of the present invention is a configuration suitable for the implementation of the sixth characteristic configuration.
The plug member is configured in a shape that can be arranged inside the fluid pipe, the operation member is arranged outside the fluid pipe in a state where the plug part is arranged inside the fluid pipe, and the plug member is fluidized. It is configured in a cylindrical shape with a pressing surface portion that presses against the tube side,
Between the plug member and the operation member is formed a groove portion having an annular opening capable of receiving the tip of the fluid pipe,
The engaging means is composed of a male serration and a female serration formed between opposing surfaces in the tube diameter direction of the plug member and the operation member,
On the inner peripheral surface of the operation member, when the stopper member and the operation member are in the operation posture in which the engagement member is serrated and fitted, the tip of the fluid pipe is inserted from the opening portion. A thread-like shape that moves and guides the operating member toward the fluid pipe in a form in which the distal end of the fluid pipe and the bottom of the groove are moved relatively close to each other by rotating the operating member in the pipe circumferential direction. The guide protrusion is formed.

  According to the above configuration, the tip of the fluid pipe is closed by moving the plug member to the fluid pipe side with the operation member by rotating the operation member in the pipe circumferential direction in the operation posture while having a simple structure. be able to.

  And since the said engaging means is comprised from the male serration and female serration which were formed between the opposing surfaces in the pipe diameter direction of the said plug member and the said operation member, serration fitting of the plug member and the operation member is carried out. While it is possible to smoothly perform the above-described pipe circumferential direction rotation operation with the combined operation posture, it is also possible to effectively achieve a plurality of the operation postures. Generation | occurrence | production can be prevented more effectively and efficiently.

The eighth characteristic configuration of the present invention is a configuration suitable for implementation of any of the first, sixth, and seventh characteristic configurations.
In configuring the marking means,
When one of the plug member and the operation member is operated to move the plug member toward the fluid pipe with the operation member, a use mark as the mark is formed on the use frequency determination surface portion formed on the other of the plug member and the operation member. The point which is providing the protrusion which forms is.

  According to the above configuration, when used, the marking means automatically forms the use mark on the use number determination surface portion formed on the other of the plug member and the operation member. Unauthorized use, such as deception, can be prevented, whereby the occurrence of damage due to a decrease in the blocking performance can be more effectively and efficiently prevented.

The partially broken exploded view of the fluid pipe | tube obturator in 1st Embodiment The top view of the operation member in a 1st embodiment Top view of the plug member in the first embodiment Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 1st Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 1st Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 1st Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 1st Embodiment. Bottom view of operation member showing mark for use count determination The partially broken exploded view of the fluid pipe obturator in 2nd Embodiment The top view of the operation member in a 2nd embodiment Top view of the plug member in the second embodiment Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory top view showing a method of using the fluid tube obturator in the second embodiment Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory top view showing a method of using the fluid tube obturator in the second embodiment Perspective view of main part showing mark for use frequency determination Explanatory sectional drawing which shows the usage method of the fluid pipe | tube obturator in 2nd Embodiment. Explanatory cross-sectional view of the main part showing a mark for use frequency determination Perspective view of main part showing mark for use frequency determination The partially broken exploded view of the fluid pipe | tube obturator in other embodiment

[First Embodiment]
For example, as shown in FIG. 7, FIG. 1 shows a synthetic resin water supply pipe P (an example of a fluid pipe, a liquid transport pipe) for the purpose of water pressure inspection (specifically, a water leakage confirmation inspection for a predetermined time under a predetermined water pressure). 1) shows a water pressure test plug 1 (an example of a fluid pipe obturator) made of synthetic resin used to seal the tip portion p2.

  The water pressure test plug 1 includes a plug member 2 capable of closing the tip portion p2 of the water supply pipe P in a close contact state, and the plug member 2 on the side of the water supply pipe P while being pressed by the operator. An operation member 3 is provided that moves and closes the plug member 2 and the tip end portion p2 of the water supply pipe P.

  As shown in FIGS. 1 and 3, the plug member 2 has a shape that can be disposed inside the water supply pipe P. Specifically, the outer peripheral surface 2b has a diameter substantially close to the inner diameter of the water supply pipe P, and a lower surface. The portion 2a (side surface of the water supply pipe) is closed, and is configured in a substantially cup-like substantially cylindrical shape with the upper side opened. On the other hand, as shown in FIGS. 1 and 2, the operation member 3 has a shape that can be disposed outside the water supply pipe P, specifically, the inner peripheral surface 3 a has a diameter substantially close to the outer diameter of the water supply pipe P. It is cylindrical and the outer peripheral surface 3b is formed in a substantially deformed rectangular tube shape having a substantially hexagonal tube shape.

  In addition, when the plug member 2 is moved to the side of the water supply pipe P by the operation member 3, the water pressure inspection plug 1 has a plurality of operation postures (specifically, the plug member 2 and the operation member 3 have different relative postures. Engaging means K for engaging the plug member 2 and the operation member 3 in a plurality of operation postures in which the relative rotation angles of the member 2 and the operation member 3 around the tube axis Y are different is provided.

  An opening 10 for opening the inside of the member is formed at the center position of the upper surface of the plug member 2, and a female serration 13 of the operation member 3 to be described later is formed at a portion adjacent to the opening 10. A male serration 11 (an example of an engaging part) is formed which is serrated (an example of engagement) and (an example of an engaged part). The male serration 11 is configured by forming a plurality (30 in this example) of crests on the outer peripheral surface of a cylindrical portion protruding upward.

  In addition, an annular pressed surface portion 12 that is one step lower than the male serration 11 is formed on the outer surface of the male serration 11 on the upper surface portion of the plug member 2.

  On the other hand, a female serration 13 for the male serration 11 of the plug member 2 is provided at the center position of the upper surface portion 3 c of the operation member 3. The female serration 13 is configured by forming a plurality (30 in this example) of troughs on the inner peripheral surface of the hole formed in the upper surface 3c of the operation member 3.

  Further, the operating member 3 has a pressing surface portion that presses the pressed surface portion 12 of the plug member 2 in an engaged state with the plug member 2 by the engaging means K and moves the plug member 2 toward the water supply pipe P. 14 is provided. The pressing surface portion 14 is configured from an outer portion of the engaged portion 13 on the inner surface of the upper surface portion 3 c of the operation member 3. That is, the engagement means K is composed of a male serration 11 and a female serration 13.

  Further, as shown in FIG. 5, the water pressure test plug 1 has a distal end portion p2 of the water supply pipe P when the plug member 2 and the operation member 3 are in an engaged state (a serration fitting state, that is, an operation posture). A groove portion 5 having an annular opening 4 that can receive the gap is formed between the plug member 2 and the cylindrical member 3. That is, the side wall portions 5 a and 5 b of the groove portion 5 are each composed of the outer peripheral surface 2 b of the plug member 2 and the inner peripheral surface 3 a of the operation member 3, and the bottom portion of the groove portion 5 is the upper surface portion 3 c of the operation member 3. It is comprised from the site | part located outside the press surface part 14 in.

  In the operation member 3, when the plug member 2 and the operation member 3 are in the operation posture, the lower end portion of the operation member 3 is from the lower end surface of the plug member 2 (that is, the lower end surface line X of the plug member 2). Also, it is configured with a height dimension protruding downward.

  The groove portion 5 is configured such that the groove width W thereof becomes smaller toward the bottom side (that is, the upper side). Specifically, the outer peripheral surface 2b of the plug member 2 is configured in a diameter-expanded form (specifically, a tapered surface shape) that is displaced to the opposite side (that is, the outside) from the tube axis Y toward the upper side. In addition, the inner peripheral surface 3a of the operation member 3 is configured in a reduced diameter form (specifically, a tapered surface shape) that is displaced toward the tube axis Y side (that is, inside) toward the upper side.

  Further, when the plug member 2 and the operation member 3 are in the operation posture, the operation from the state in which the tip portion p2 of the fluid pipe P is inserted into the opening 4 is performed on the inner peripheral surface 3a of the operation member 3. The operation member 3 is moved to the side of the fluid pipe P in such a manner that the tip part p2 of the fluid pipe P and the bottom part of the groove part 5 are moved relatively close to each other while being bitten into the outer peripheral surface p1 of the fluid pipe P by rotating the member 3 in the pipe circumferential direction. A thread-shaped guide convex portion 7 is formed to guide the movement. The guide convex portion 7 has a saw-blade shape or a substantially saw-tooth shape cross-sectional shape so as to exhibit a function like a female screw, and spirals over both upper and lower end portions of the inner peripheral surface 3a of the operation member 3. It is extended to.

  That is, the water pressure test plug 1 operates the operating member 3 as described above to bring the front end portion p2 of the water supply pipe P and the bottom portion of the groove portion 5 close to each other so that the sandwiching pressure between the side wall surfaces 5a and 5b of the groove portion 5 is increased. Thus, the stopper member 2 and the distal end portion p2 of the water supply pipe P are brought into close contact with each other, and thereby, the stopper member 2 is configured to be attachable to the water supply pipe P in a state where the distal end portion p2 of the water supply pipe P is closed.

  Between the opposing surfaces of the plug member 2 and the operation member 3, the number of times of use is determined by the pressing force on the plug member 2 generated when the operation member 3 moves the plug member 2 toward the water supply pipe P. A marking means M for attaching a determination mark to the operation member 3 is provided.

  The marking means M is provided with a plurality of (in this example, two) conical protrusions 15 (marked for use frequency determination) that are formed to protrude upwardly from the pressed surface portion 12 of the plug member 2. An example of a marking portion to be formed), and configured to automatically form a concave use mark m (an example of the above-described use frequency determination mark) on the pressing surface portion 14 of the operation member 3 by the pressing force. Has been.

  That is, the water pressure test plug 1 changes with a high probability every time it is used even if the operation posture (that is, the serration fitting posture) between the plug member 2 and the operation member 3 by the engagement means K is not particularly conscious. Therefore, the number of times of use can be determined with a high probability by counting the use marks m described above before use.

  The groove portion 5 is provided with an engaging portion 8 that allows the water supply pipe P to be mounted in a state in which the groove portion 5 is engaged with the outer peripheral surface p1 of the water supply pipe P before the front end portion p2 of the water supply pipe P is closed. Yes. The engaging portion 8 includes a protruding portion 3d that protrudes downward from the lower surface portion 2a of the plug member 2 in the operation member 3, and the guide convex portion 7 that is positioned on the inner peripheral surface of the protruding portion 3d. .

  In addition, the groove portion 5 is provided with a communication port 9 that communicates with the outside in the mounting posture of the water supply pipe P by the engaging portion 8. The communication port 9 is composed of a plurality of elongated holes formed in the connection piece 6 so as to be dispersed in the circumferential direction of the water supply pipe P.

  Further, the water pressure inspection plug 1 is provided with a guide portion that guides the distal end portion p2 of the water supply pipe P to the opening portion 4 of the groove portion 5. The guide portion is constituted by the protruding portion 3 d of the operation member 3. Note that a plurality of gripping operation pieces 3e that are used when the operator performs a gripping operation project from the lower portion of the outer peripheral surface 3b of the operation member 3.

Next, a method of using the water pressure inspection plug 1 configured as described above will be described.
First, as shown in FIG. 4, the plug member 2 is inserted into the operation member 3 from the lower opening of the operation member 3, and the female serration 13 of the operation member 3 and the male serration 11 of the plug member 2 are serrated. Let

  Next, as shown in FIG. 5, the water pressure test plug 1 is operated in proximity to the water supply pipe P so that the tip portion p <b> 2 of the water supply pipe P is inserted into the lower opening of the operation member 3, and then the water pressure test plug 1 is Rotate the water supply pipe P in the circumferential direction. With this rotation operation, the front end portion p <b> 2 of the water supply pipe P moves toward the opening 4 side of the groove portion 5. And as shown in FIG. 6, before the front-end | tip part p2 of the water supply pipe P reaches the opening part 4 of the groove part 5, rotation operation is once stopped.

  At this time, the water pressure inspection plug 1 is mounted and held on the water supply pipe P in a state in which the engaging portion 8 is engaged with the tip end portion p2 of the water supply pipe P. In addition, the base end part of the water supply pipe P is connected to a water supply source etc. through the water tap.

  Incidentally, in the rotation operation, the operation member 3 is rotated with the operation tool (for example, a wrench) engaged with the outer peripheral surface 3b of the operation member 3, or the grip operation piece 3e formed on the outer peripheral surface 3b of the operation member 3 is gripped. It can be carried out by rotating in the state.

  Next, as shown in FIG. 6, water supply to the water supply pipe P is started, and the internal gas (bubbles) of the water supply pipe P together with the water through the opening 4 of the groove part 5, the inside of the groove part 5, and the communication port 9 of the groove part 5. In some cases, trash etc.) are discharged to the outside.

  After releasing the internal gas of the water supply pipe P to the outside, the water pressure test plug 1 is rotated again while water is supplied to the water supply pipe P, and the tip part p2 of the water supply pipe P and the bottom part of the groove part 5 are moved relatively close to each other. I will let you. Then, as shown in FIG. 7, the outflow of water from the communication port 9 is stopped by the sandwiching pressure between the side walls 5a and 5b of the groove 5 (that is, the distal end portion p2 of the fluid pipe P is blocked by the plug member 2). The rotation operation of the water pressure inspection plug 1 is finished. Thereby, the water pressure test plug 1 is attached to the distal end portion p2 of the water supply pipe P in a state where the distal end portion p2 of the water supply pipe P is closed.

  At this time, due to the pressing force associated with the rotation operation, the distal end portion of the protrusion 15 of the plug member 2 is indented into the pressing surface portion 14 of the operation member 3. Therefore, when the water pressure test plug 1 is removed and used again for another water supply pipe P, as shown in FIG. 8A, a use mark m due to the protrusion 15 remains on the pressing surface portion 14 of the operation member 3. It will be.

  Further, when used again for another water supply pipe P, the operation posture (serration fitting posture) is different from the previous one with a high probability without being particularly conscious. Thus, another usage mark m due to the protrusion 15 remains on the pressing surface portion 14 of the operation member 3 with a high probability.

  Therefore, the water pressure test plug 1 can determine the number of times it has already been used with high probability by checking the state of the pressing surface portion 14 of the operation member 3 before use. In addition, for example, it is possible to set the quality assurance limit on the producer side by the number of times (for example, once), and even if damage occurs due to the deterioration of the blocking performance, the producer side and the constructor side It is easy to determine which is responsible for compensation.

  In the present embodiment, the pressing surface portion 14 of the operation member 3 corresponds to a usage count determination surface portion for determining the usage count.

[Second Embodiment]
In the water pressure test plug 1 of the present embodiment, as shown in FIGS. 9 to 13, the operation member 3 is configured in a substantially bottomed cylindrical shape, and on the upper side of the outer peripheral surface 2 b of the plug member 2, A plurality of flexible (four in this example) thin engaging wings 2d (an example of an engaging portion) that engage with the guide convex portion 7 of the inner peripheral surface 3a of the operation member 3 are formed.

  Then, a mark m for determining the number of times of use is attached to the plug member 2 by the operation force on the operation member 3 when the plug member 2 is moved to the water supply pipe P side by the operation member 3. A marking means M is provided.

  The marking means M shows the first contact state between the plug member 2 and the front end portion p2 of the water supply pipe P for the first time, and then displays the close contact state between the plug member 2 and the front end portion p2 of the water supply pipe P. Different marks m are attached to the second use.

  In forming the marking means M, the annular pressed surface portion 12 of the upper surface portion 2c of the plug member 2 (one example of the plug member 2 and the operation member 3) is subjected to shear separation as the operation force increases. A relatively small first convex portion 17 having a semi-circular shape when viewed from the top surface and a relatively large second shape having a generally oval shape when viewed from the top surface capable of receiving the operating force large enough to seal the tip portion p2 of the water supply pipe P. The protrusions 18 are formed so as to protrude in a state of being dispersed in the pipe circumferential direction and aligned in the pipe circumferential direction. The first convex portion 17 is arranged on the upper side of the second convex portion 18 in a clockwise direction when viewed from above.

  Further, a taper located on the opposite side of the second convex portion 18 toward the upper side on the upper side of the first convex portion 17 on the second convex portion 18 side (that is, the lower side in the clockwise direction when viewed from above). A notch 17a (an example of a entering portion) that forms the surface 17b is formed, and the upper portion of the second convex portion 18 on the first convex portion 17 side corresponds to the tapered surface 17b of the first convex portion 17. A small third convex portion 18a having a pointed shape protruding in a state of forming a tapered surface 18b positioned on the first convex portion 17 side at an angle and upward is formed.

  On the other hand, the annular pressing surface portion 14 on the inner surface of the operation member 3 has a normal posture for closing the water supply pipe in contact with the pressed surface portion 12 of the plug member 2 (in this example, the posture at the time of shipment shown in FIG. 12). , An opening 19 is formed that forms a partially annular (substantially C-shaped) entry space S in a top view in which the first protrusion 17 and the second protrusion 18 enter.

  That is, in this hydraulic pressure inspection plug 1, as shown in FIGS. 13 to 15, first, as the operation member 3 is rotated clockwise from the normal posture in a top view, first, the operation member 3 and the plug member 2 Of the plug member 2 and the opening edge 19a (an example of a receiving portion) on the upper side in the rotational operation direction of the operation member 3 come into contact with each other (FIG. 14, FIG. 16A to FIG. 16). (See (b)), by further rotating the operating member 3 from this state, the plug member 2 is pushed into the water supply pipe P while the operating member 3 and the plug member 2 are rotated.

  As the plug member 2 increases in rotational resistance to some extent due to the downward movement of the operation member 3 due to the rotation of the operation member 3 and the rotation resistance of the plug member 2 increases, the operation force received from the opening edge 19a of the operation member 3 is the first. The convex portion 17 is shear-separated and further moved to the second convex portion 18 side while being pushed by the opening edge portion 19a, and in a state of being in surface contact with the second convex portion 18 and upward by the third convex portion 18a. Engage in a state in which movement is restricted (see FIGS. 16B to 16C).

  When the rotation operation of the operating member 3 is further advanced from this state, the operating member 3 and the plug member 2 move downward while being rotated in a form in which the second convex portion 18 receives the operating force via the first convex portion 17. Then, the front end portion p2 of the water supply pipe P is closed (see FIGS. 15 and 16C).

  When the water pressure test plug 1 is removed from the water supply pipe P after completing the first water pressure test, the engagement between the opening edge 19a of the operation member 3 and the second convex portion 18 of the plug member 2 is released. The first convex portion 17 falls off from the water pressure inspection plug 1. That is, the water pressure test plug 1 can determine whether or not the first use has been performed by determining whether or not the first convex portion 17 exists.

  Then, as the second time, as in the first time, when the operation member 3 and the plug member 2 are used in the normal posture, the first convex portion 17 becomes the water pressure inspection plug by the first use. 17 to 19, the second projecting portion 18 of the plug member 2 and the opening edge 19 a of the operation member 3 are directly connected without the first projecting portion, as shown in FIGS. 17 to 19. 20 is deformed (an example of destruction or deformation) in the third convex portion 18a formed on the second convex portion 18 as shown in FIG. 20 (FIG. 20B). ) State). That is, the water pressure test plug 1 can also determine whether or not the second use has been performed in the normal posture by determining whether or not the third convex portion 18a is deformed.

  Further, as the second time, unlike the first time, the plug member 2 and the operation member 3 are in contact with each other in a state where the second convex portion 18 of the plug member 2 does not enter the opening 19 of the operation member 3. When used in the posture state, the first protrusion formed on the upper portion of the second convex portion 18 as shown in FIGS. 22 and 23 by the pressing force from the pressing surface portion 14 generated by the rotation operation of the operating member 3. The four convex portions 18d are crushed (an example of destruction or deformation) (states shown in FIGS. 22B and 23B). That is, the water pressure test plug 1 can also determine whether or not the second use has been performed in the non-normal posture by determining whether or not the fourth protrusion 18d is crushed.

  18e is a stepped portion for enhancing the visibility of the deformed state of the third convex portion 18a, and 2e is the same diameter as or substantially the same as the inner diameter of the operation member 2 in the normal posture. It is a plurality of convex portions for maintaining a posture for making a diameter. Reference numeral 3f denotes a flexible slip-off preventing portion provided with a substantially ring-shaped engaging portion engaged with the water supply pipe P in order to prevent the operation member 3 from slipping out due to water pressure.

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Other Embodiments]
(1) In the second embodiment described above, the case where the first convex portion and the second convex portion are formed on the plug member 2 and the receiving portion is formed on the operation member 3 has been described as an example. On the contrary, the 1st convex part and the 2nd convex part may be formed in the operation member 3, and the receiving part may be formed in the plug member 2.

(2) In the second embodiment described above, when the second convex portion and the receiving portion come into contact with each other through the first convex portion by the moving operation, the third convex portion is moved by the operating force or the pressing force. The notch 19a is shown as an example of the entering portion into which the third convex portion enters so as not to be broken or deformed. However, for example, the concave portion or an elastically deforming portion that is elastically deformed may be used. It may be a part in which the part into which the part enters is absent.

(3) In the second embodiment described above, the operation member 3 has an opening portion to form the entry space S into the pressing surface portion 14 of the operation member 3 in the normal posture. Although the case where 19 is formed is shown as an example, a concave portion may be formed in the pressing surface portion 14 of the operation member 3.

(4) In the second embodiment described above, the first convex portion, the second convex portion, and the receiving portion are dispersedly formed in the pipe circumferential direction, so that the first use and the second use are different depending on the operation force. For example, the first convex portion, the second convex portion, and the receiving portion are dispersed and formed in the groove axis direction in the groove portion 5 by the pressing force, for example. You may make it the structure which attaches | subjects a different mark by the 2nd use and the 2nd use.

(5) In the above-described second embodiment, a lower portion is formed on the lower side in the rotational operation direction of the first convex portion 17, and the third convex portion is formed on the upper side in the rotational operation direction of the second convex portion 18. For example, the first convex portion 17 has an intrusion portion on the upper side in the rotational operation direction, and the opening edge 19a of the operation member 3 has a third portion. A convex portion may be formed.

(6) The specific configuration such as the shape of the plug member 2 is not limited to the configuration shown in the above-described embodiments, and various configuration changes can be made. For example, in each of the above-described embodiments, the case where the internal space is configured in a substantially cup shape that opens upward is shown as an example, but a solid configuration that does not have the internal space may be used. Also. For example, as shown in FIG. 24, the outer peripheral surface 2b of the plug member 2 may be formed in a shape (so-called bamboo shoot shape) in which an annular step portion 16 that converges downward is continuous in the upper limit direction. Further, for example, in the above-described embodiment, the plug member 2 is configured in a shape that can be disposed inside the water supply pipe P, but is in close contact with the water supply pipe P such as a planar shape that can be applied to the end surface of the water supply pipe P. As long as the water supply pipe P can be closed, various shapes may be adopted.

(7) The specific configuration such as the shape of the operation member 3 is not limited to the configuration shown in the above-described embodiments, and various configuration changes can be made. For example, a hexagonal cylindrical shape or a cylindrical shape in which the gripping operation piece 3e is absent may be used. Further, for example, in the above-described embodiment, the case where the cylinder is configured to be disposed outside the fluid pipe has been illustrated as an example. However, it cannot be disposed outside the fluid pipe, and simply presses the plug member. It may be a bar shape or the like that is obtained.

(8) The specific configuration of the engagement means K is not limited to the configuration including the male serration 11 and the female serration 13 shown in the above-described embodiment, and various configuration changes can be made.

(9) In each of the above-described embodiments, the case where the marking unit M is configured to attach the mark for use frequency determination to the operation member 3 has been described as an example. May be configured to be attached to the plug member 2. In that case, for example, instead of providing the marking member (specifically, the protrusion 15) on the plug member 2, the operation member 3 may be provided with a marking portion.

  Further, for example, the marking means M may be configured to attach a mark for use frequency determination to both the members 2 and 3. In this case, for example, another member may be interposed between the plug member 2 and the operation member 3, and marking portions may be provided on both surfaces of the separate member on the plug member side and the operation member side.

(10) In the first embodiment described above, the protrusion 15 that forms the use mark m by the pressing force is shown as an example of the marking portion. However, for example, the use mark is attached with paint such as ink by the pressing force. It may be a thing to do.

(11) The fluid pipe is not limited to the water supply pipe P shown in each of the above-described embodiments, and may be various kinds of pipes such as a drain pipe, a hot water supply pipe, a gas pipe, or a pipe for transporting a chemical solution or drainage liquid. .

(12) In each of the above-described embodiments, the hydraulic pressure test plug used for the hydraulic pressure test is shown as an example of the fluid pipe closing tool. However, the fluid pressure test plug may be used for any purpose as long as the tip of the fluid pipe is closed. It may be done.

(13) In each of the above-described embodiments, the case where the fluid tube obturator 1 is made of synthetic resin has been described as an example, but may be made of metal or glass.

(14) In each of the above-described embodiments, the case where the guide convex portion 7 is provided on the inner peripheral surface 3a of the operation member 3 has been described as an example, but the inner peripheral surface 3a of the operation member 3 and the outer periphery of the plug member 2 It may be provided on both of the surfaces 2b.

(15) The specific configuration of the guide convex portion 7 is not limited to the configuration shown in the above-described embodiments, and various configuration changes can be made. For example, in each of the above-described embodiments, the case where the saw blade has a cross-sectional shape is shown as an example, but a simple mountain-like cross-sectional shape may be used. Further, in each of the above-described embodiments, the case where they are continuously formed in a spiral shape has been described as an example, but they may be formed in a dispersed manner.

(16) In each of the above-described embodiments, the case where the inner peripheral surface 3a of the operation member 3 is configured to be reduced in diameter toward the bottom side of the groove portion 5 has been described as an example, but the outer peripheral surface 2a of the plug member 2 is illustrated. However, if it is comprised in the form which diameter-expands the bottom part side of the groove part 5, it is not necessary to make it the diameter reduction form as mentioned above.

(17) In each of the above-described embodiments, the case where the outer peripheral surface 2a of the plug member 2 is configured to increase in diameter toward the bottom side of the groove portion 5 has been described as an example, but the inner peripheral surface 3a of the operation member 3 is If the diameter of the groove 5 is reduced toward the bottom side, the diameter may not be increased as described above.

P Fluid pipe p2 Tip 1 Fluid pipe obturator (Hydraulic test plug)
2 Plug member 3 Operation member m Use mark (mark for use frequency determination)
M Marking means K Engaging means 4 Opening portion 5 Groove portion 7 Guide convex portion 11 Male serration 12 Pressed surface portion 13 Female serration 14 Press surface portion (number of times of use 15 Protrusion 17 First convex portion 17a Entering portion 18 Second convex portion 18a First 3 convex part 18d 4th convex part 19a Receiving part S Enter space

Claims (8)

A plug member capable of closing the distal end portion of the fluid pipe in a close contact state, and an operation member for moving the plug member toward the fluid pipe while pressing the plug member to bring the plug member into contact with the distal end portion of the fluid pipe. And
When the operating member is operated to move the plug member toward the fluid pipe, the operating force is applied to the operating member, or the mark for determining the number of times of use is determined by the pressing force applied to the plug member generated by the moving operation. Or the fluid pipe | tube obturator provided with the marking means attached | subjected to these both members.   The marking means is used for the first time when the close contact state between the plug member and the tip of the fluid pipe is first shown, and then the second use when the close contact state between the plug member and the tip end of the fluid pipe is shown. The fluid tube obturator according to claim 1, wherein the fluid tube obturator is configured to be provided with different types of marks. In configuring the marking means,
When one of the plug member and the operation member is operated to move the plug member continuously toward the fluid pipe by the operation member, the operation transmitted from a receiving portion formed on the other of the plug member and the operation member is transmitted. A first convex portion that shears and separates as the mark as the force or the pressing force increases, and a plug member and a tip of the fluid pipe through the first convex portion in contact with and support the separated first convex portion A second convex portion is formed for receiving the operating force or the pressing force transmitted from the receiving portion until the two are in close contact with each other;
Between the opposing surfaces of the second convex part and the receiving part, the second convex part and the receiving part in a state where the first convex part is not interposed by the moving operation in a state where the first convex part is dropped. A third protrusion that is broken or deformed as the mark by the operating force or the pressing force by contact with the
When the second convex portion and the receiving portion come into contact with the first convex portion through the first convex portion by the moving operation, the third convex portion is destroyed by the operation force or the pressing force. Alternatively, the fluid tube obturator according to claim 2, wherein an intrusion portion into which the third convex portion enters is formed so as not to be deformed. The plug member is configured in a shape that can be disposed inside the fluid pipe,
The operation member can be disposed outside the fluid pipe in a state in which the plug member is disposed inside the fluid pipe, and has a pressing surface portion that presses the pressed surface portion of the plug member toward the fluid pipe. Configured,
A groove portion having an annular opening capable of receiving a tip end of a fluid pipe is formed between the plug member and the operation member,
On the inner peripheral surface of the operation member, the distal end portion of the fluid pipe is inserted into the outer peripheral surface of the fluid pipe while being bitten into the outer peripheral surface of the fluid pipe by rotating the operation member in the pipe circumferential direction from the state where the distal end portion of the fluid pipe is inserted into the opening. A thread-shaped guide convex portion for moving and guiding the operating member to the fluid pipe side in a form in which the bottom portion of the groove portion is moved relatively close to each other is formed.
The pressed surface portion of the plug member is formed to protrude in a state where the first convex portion and the second convex portion are dispersed and aligned in the pipe circumferential direction,
In the pressing surface portion of the operation member, a partial annular entering space is formed in which the first convex portion and the second convex portion enter in a normal posture for fluid pipe closing in surface contact with the pressed surface portion,
The fluid pipe obturator according to claim 3, wherein the receiving part is configured by an edge in a pipe circumferential direction of the entry space.   The second convex portion is deformed or broken by the pressing force when the plug member is moved to the fluid pipe side in an irregular posture in which the second convex portion is displaced from the entrance space in the pipe circumferential direction. The fluid pipe obturator according to claim 4, wherein a fourth convex portion is formed. When the operating member is operated to move the plug member toward the fluid pipe, engagement means for engaging the plug member and the operating member in a plurality of operation postures in which the relative postures of the plug member and the operating member are different is provided. And
The marking means attaches the mark to a plurality of positions corresponding to each of the operation postures in one of the plug member and the operation member when the operation member moves the plug member toward the fluid pipe. The fluid tube obturator according to claim 1, which is configured. The plug member is configured in a shape that can be arranged inside the fluid pipe, the operation member is arranged outside the fluid pipe in a state where the plug part is arranged inside the fluid pipe, and the plug member is fluidized. It is configured in a cylindrical shape with a pressing surface portion that presses against the tube side,
Between the plug member and the operation member is formed a groove portion having an annular opening capable of receiving the tip of the fluid pipe,
The engaging means is composed of a male serration and a female serration formed between opposing surfaces in the tube diameter direction of the plug member and the operation member,
On the inner peripheral surface of the operation member, when the stopper member and the operation member are in the operation posture in which the engagement member is serrated and fitted, the tip of the fluid pipe is inserted from the opening portion. A thread-like shape that moves and guides the operating member toward the fluid pipe in a form in which the distal end of the fluid pipe and the bottom of the groove are moved relatively close to each other by rotating the operating member in the pipe circumferential direction. The fluid pipe obturator according to claim 6, wherein the guide convex portion is formed. In configuring the marking means,
When one of the plug member and the operation member is operated to move the plug member toward the fluid pipe with the operation member, a use mark as the mark is formed on the use frequency determination surface portion formed on the other of the plug member and the operation member. The fluid pipe obturator according to any one of claims 1, 6, and 7, wherein a projecting portion that forms the shape is provided.

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