JP6629538B2 - Tube unit - Google Patents

Description

  The invention relates to a tube unit.

  Patent Document 1 discloses a gas meter, a rotatable joint, and a gas pipe connected to the gas meter. The gas meter disclosed in Patent Document 1 is connected to an inlet gas pipe via a gas introduction pipe. The gas meter disclosed in Patent Document 1 is connected to an outlet gas pipe via a gas outlet pipe. A rotatable joint is connected to the gas introduction pipe. This type of rotatable joint is, for example, provided rotatably and airtightly in a state where the joint body and the nut member are prevented from coming off.

  According to the rotatable joint disclosed in Patent Literature 1, it is possible to connect to the inlet gas pipe erected from underground without rotating the gas introduction pipe. Thereby, not only is the construction easy, but also the distance to the wall surface can be reduced, so that the space required for mounting the gas meter can be reduced.

JP 2007-263661 A

  The pivotable joint disclosed in Patent Literature 1 has room for improvement in a countermeasure when the inlet gas pipe is accidentally twisted due to the connection of the gas introduction pipe. The twisting of the inlet gas pipe can cause cracks in the inlet gas pipe. The present invention solves such a problem. SUMMARY OF THE INVENTION An object of the present invention is to provide a pipe unit that can suppress twisting of a pipe when connected to the pipe.

  The tube unit of the present invention will be described with reference to the drawings. Note that the reference numerals in the figures are used in this section to facilitate understanding of the contents of the invention. The use of reference numerals in the figures in this column does not intend to limit the content of the invention to the illustrated range.

To achieve the above object, according to an aspect of the present invention, the pipe unit is provided with a tube portion 1 10, 210, and one end communicating portion 1 12 and the other end communicating portion 14,114,214,414 . One communication unit 1 12 is connected to one end 1 20, 220 of the tube section 1 10,210. The one end communication part 112 makes the inside and outside of the pipe parts 110 and 210 communicate with each other. The other end communicating portion 14,114,214,414 is connected to the other end 1 22,222 of the tube portion 1 10, 210. The other end communicating portion 14,114,214,414 is communicating and the external in the tube unit 1 10, 210. The other end communicating portion 14,114,214,414 tube was added to the tube portion 1 10, 210 are connected. The pipe portions 110 and 210 include one end fixed cylinder 124 , the flexible tube 26, and the other end fixed cylinders 28 and 228 . The one end side fixed cylinder 124 is arranged at one end 120 , 220 of the tube part 110 , 210 . One end side fixed cylinder 124 is connected to one end communicating portion 112 . The other end side fixed cylinders 28 , 228 are arranged at the other ends 22 , 122 , 222 of the tube parts 110 , 210 . The other end side fixed cylinders 28 and 228 are connected to the other end communicating portions 14 , 114, 214 and 414 . One communication unit 1 12 can be rotated in the circumferential direction one end 1 20, 220 on one end side fixed barrel 124 of the tube section 1 10,210. The other end communication portions 14, 114, 214, 414 include the inner cylinders 60, 160, 460, the unit other end side outer cylinder 90, and the unit other end side stopper ring 92. One end 76,176,476 of the inner cylinder 60,160,460 is connected to the other end 1 22,222 of the other end side fixed tube 28 of the tube section 1 10,210. The other ends 78, 178, 478 of the inner cylinders 60, 160, 460 are inserted into the tubes when the tubes are connected to the other end communicating portions 14, 114, 214, 414. The unit other end side outer cylinder 90 covers the other ends 78, 178, 478 of the inner cylinders 60, 160, 460 with a gap. The unit other end side stopper ring 92 is arranged in the unit other end side cylinder gap 98 so as to be rotatable in the circumferential direction of the inner cylinders 60, 160, 460. The unit other end side inter-cylinder gap 98 is a gap between the other ends 78, 178, 478 of the inner cylinders 60, 160, 460 and the unit other end side outer cylinder 90. When the other end communicating portion 14, 114, 214, 414 is connected to the tube, the unit other end side stopper ring 92 contacts the tube when the tube enters the unit other end side inter-cylinder gap 98. This prevents the pipe from coming out of the unit other end side inter-cylinder gap 98.

One communication unit 1 12 is rotatable in the circumferential direction of the one end side fixed tube 124 one end 1 20, 220 of the tube section 1 10,210. Such rotation, the tube having one end communicating portion 1 12 when one end communicating portion 1 12 are connected to different ones tubular portion 1 10, 210 are caused to rotate (the other end communicating portion 14, 114, 214 , 414) is suppressed. When a tube is inserted into the other end communication portion 14, 114, 214, 414, the unit other end side stopper ring 92 prevents the tube from falling out of the unit other end side inter-cylinder gap 98. Accordingly, unlike the case where the pipe is connected to the pipe by, for example, screwing, when the pipes are connected to the other end communication parts 14, 114, 214, 414, the rotation of the other end communication parts 14, 114, 214, 414 and the pipe are connected. Rotation is no longer necessary. In addition, the unit other end side stopper ring 92 is disposed in the unit other end side inter-cylinder gap 98 so as to be rotatable in the circumferential direction of the inner cylinders 60, 160, 460. Since the stopper ring 92 on the other end of the unit is rotatable, the twisting of the pipe caused by the rotation of the one end communicating part 112 and the pipe parts 110 and 210 is further suppressed as compared with the case where it is not so. That may also suppressed twisting one end communicating portion 1 12 is torsionally also the other end communicating portion 14,114,214,414 due tube is subjected to rotation experienced is due to the rotating tube.

Further, one end communicating portion 1 12 described above is, the connecting tube portion 1 40, that has a tube one end connecting portion 1 42. One end 1 56 of the connecting tube portion 1 40 is connected to one end 1 20, 220 of the tube section 1 10,210. Threaded portion is provided on the other end 1 58 of the connecting tube portion 1 40. Tube end side connecting portion 1 42 so as to be rotatable in the circumferential direction one end 1 20, 220 of the tube section 1 10, 210, an end 1 56 of the connecting tube portion 1 40 of the tubular portion 1 10 and 210 connecting to one end 1 20, 220.

Tube end side connecting portion and the upper mentioned is that have a wire 142 cyclic. In this case, the outer peripheral surface thereof an annular wire 142 is fitted over the entire circumference circle groove 148 of the end 156 of the connection tube portion 140 that is provided. In this case, that the wire 142 is fits groove 128 inner peripheral surface of the annular over the entire circumference of the end 120 of the tube portion 10 is provided.

  Alternatively, it is desirable that a screw 240 is provided at the other end 222 of the above-described tube portion 210. In this case, it is desirable that a screw be provided at one end 476 of the inner cylinder 460. This screw engages with the screw 240 of the tube section 210.

Alternatively, it is desirable that the above-mentioned other end communication portion 14 further includes a pipe other end side outer cylinder 80 and a pipe other end side stopper ring 82. The outer tube 80 on the other end of the tube covers one end 76, 176 of the inner tube 60, 160 with a gap. The other end stopper ring 82 of the tube is disposed in the gap between the other end of the tube so as to be rotatable in the circumferential direction of the inner tubes 60 and 160. The gap between the other ends of the tubes is a space between one ends 76 and 176 of the inner tubes 60 and 160 and the outer tube 80 on the other end of the tube. Other end of the tube portion 1 10 by a tube and the other end side stopper ring 82 is another end 1 22 of the pipe section 1 10 into the gap between the tubes and the other end-side tube is in contact with the other end 1 22 of which the pipe section 1 10 enters 1 22 is prevented from coming out of the gap between the other ends of the tubes.

The other end stopper ring 82 of the tube is disposed in the gap between the other end of the tube so as to be rotatable in the circumferential direction of the inner tubes 60 and 160. Tube and the other end side stopper ring 82 is another end 1 22 of the tube portion 1 10 is prevented from escaping from the gap between the tubes and the other end-side tube. Thus, the other end communication portions 14 and 114 can be rotated. As a result, rotation of the pipe portion 110 during connection of the pipe is suppressed.

  Alternatively, it is desirable that the inner cylinders 160 and 460 of the other end communication portions 114 and 414 are bent.

  ADVANTAGE OF THE INVENTION According to this invention, when connected to a pipe | tube, the torsion with respect to the pipe | tube can be suppressed more.

It is an outline view of a pipe unit concerning a reference embodiment of the present invention. It is a figure showing composition of a pipe part concerning a reference embodiment of the present invention. It is a figure showing composition of an end communication part concerning a reference embodiment of the present invention. It is a figure showing composition of the other end communication section concerning a reference embodiment of the present invention. It is an outline view of a pipe unit concerning a 1st embodiment of the present invention. It is a figure showing composition of a pipe part concerning a 1st embodiment of the present invention. It is a figure showing composition of an end communication part concerning a 1st embodiment of the present invention. It is a figure showing composition of the other end communication section concerning a 1st embodiment of the present invention. It is an outline view of a pipe unit concerning a 2nd embodiment of the present invention. It is a figure showing composition of a pipe part concerning a 2nd embodiment of the present invention. It is an outline view of a pipe unit concerning a 3rd embodiment of the present invention. It is a figure showing composition of the other end communication part concerning a 3rd embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same components are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

< Reference form>
[Structure description]
1 is a diagram of such a pipe unit in this preferred embodiment. The configuration of the pipe unit of the present embodiment will be described with reference to FIG. The tube unit includes a tube portion 10, one end communication portion 12, and another end communication portion 14. The tube 10 allows the fluid to pass through. For this preferred embodiment, the fluid tube portion 10 passes is water. Of course, the fluid that the tube section 10 passes through is not limited to this. In FIG. 1, the middle part of the tube part 10 is omitted. One end communication part 12 is connected to one end 20 of tube part 10. The one end communication part 12 connects the inside and the outside of the tube part 10. To the one end communication part 12, in addition to the pipe part 10, another thing (for example, a well-known water meter not shown) is connected. The other end communication part 14 is connected to the other end 22 of the tube part 10. The other end communication portion 14 connects the inside and the outside of the tube portion 10. In addition to the pipe 10, a different pipe (for example, a well-known water pipe not shown) is connected to the other end communication section 14. The one end communication part 12 is rotatable in the circumferential direction of one end 20 of the tube part 10. In the description of the present invention, the “circumferential direction” means a direction along one of the outer peripheral surface and the inner peripheral surface of the cylindrical object and orthogonal to the longitudinal direction of the object. As a result, in the case of this preferred embodiment, one end communicating portion 12 is rotatable tube portion 10 in the axial. For this preferred embodiment, as is clear from the description below, in addition to the one communicating portion 12, the other end communicating portion 14 is also rotatable tube portion 10 in the axial.

Figure 2 is a diagram showing the configuration of the tube portion 10 according to this preferred embodiment. The configuration of the tube section 10 of the present embodiment will be described with reference to FIG. For this preferred embodiment, the tube portion 10 has one end side fixed barrel 24, a flexible tube 26, the other end side fixed tube 28. The one end side fixed cylinder 24 is arranged at one end 20 of the tube part 10. For this preferred embodiment, one end side fixed barrel 24 is a cylindrical member with grooves formed in the surface. For this preferred embodiment, one end side fixed barrel 24 is connected to one end communicating portion 12. The flexible pipe 26 is a known pipe in which peaks and valleys are alternately arranged. In FIG. 2, an intermediate portion of the flexible tube 26 is omitted. The other end side fixed cylinder 28 is arranged at the other end 22 of the tube part 10. For this preferred embodiment, the other end side fixed tube 28 is a member having the same shape as one end side fixed barrel 24. For this preferred embodiment, the other end side fixed tube 28 is connected to the other end communicating portion 14.

Figure 3 is a diagram showing the configuration of one communication unit 12 according to this preferred embodiment. Based on FIG. 3, the structure of one end communicating portion 12 of this preferred embodiment will be described. For this preferred embodiment, one communicating section 12, a connecting cylindrical portion 40, a tube one end connecting portion 42, a tube one end sealing member 44, and a tube one end side guide ring 46.

  The connection cylinder part 40 is cylindrical. The connection tube 40 connects the inside and the outside of the tube 10. One end 56 of the connection tube portion 40 is inserted into one end side fixed tube 24 of the one end 20 of the tube portion 10. As a result, one end 56 of the connection tube 40 is connected to one end 20 of the tube 10. A screw portion is provided at the other end 58 of the connection tube portion 40.

  The tube one end connection portion 42 has a tube one end outer cylinder 50, a tube one end stopper ring 52, and a tube one end plug 54. When the one end 56 of the connection tube 40 is inserted into the one end 20 of the tube 10, the one end outer tube 50 covers the one end 56 of the connection tube 40 together with the one end 20 of the tube 10. The tube one end side stopper ring 52 is arranged in the tube one end side inter-tube space 48. The tube one end side inter-cylinder space 48 is a space between one end 56 of the connection tube part 40 and the tube one end side outer tube 50. The fixed cylinder 24 at one end of the tube 10 enters here. A protrusion is provided on the inner edge of the stopper ring 52 at one end of the tube. The tip of the projection fits into a groove on the surface of the one end side fixed cylinder 24 that has entered the one end side inter-tube space 48. This prevents the tube portion 10 from coming out of the communication portion 12 at one end. The pipe one end plug 54 is also inserted into the pipe one end side inter-tube space 48. The tube one end plug 54 fits into a groove formed on the inner peripheral surface of the tube one end outer cylinder 50. By fitting into the groove, the pipe end side plug 54 does not come off from the pipe end side inter-tube space 48. As a result, the pipe one end side plug 54 locks the pipe one end side stopper ring 52 in the pipe one end side inter-tube space 48. An outer edge portion of the one-end-side stopper ring 52 is fitted in a gap between the one-end-side outer cylinder 50 and the one-end-side plug 54. The outer edge portion of the one-end stopper ring 52 is not pressed against the inner peripheral surface of the one-end outer cylinder 50 or the one-end plug 54. Thereby, the stopper ring 52 on one end of the pipe can rotate in the circumferential direction of the connection cylinder 40. As a result, one end 56 of the connection tube 40 is connected to the one end 20 of the tube 10 so that the tube one end side connection portion 42 can rotate in the circumferential direction of the one end 20 of the tube 10.

  The pipe one-side sealing material 44 is in close contact with the inner peripheral surface of the one-end fixed cylinder 24 that has entered the one-end tube inter-tube space 48. Thereby, the space between the connection cylinder portion 40 and the one end side fixed cylinder 24 is sealed. When the connection tube part 40 rotates in the circumferential direction of the one end 20 of the tube part 10, the inner peripheral surface of the one end side fixed tube 24 slides along the surface of the tube one end seal material 44.

  When the one-end-side fixed cylinder 24 enters the one-end-side inter-cylinder space 48, the one-end-side guide ring 46 is pushed by the one-end-fixed cylinder 24 and advances to the back of the one-end-side inter-cylinder space 48. As a result, while the one-end-side fixed cylinder 24 advances in the tube-one-end-side inter-tube space 48, the end surface of the one-end-side fixed cylinder 24 is protected by the one-end-side guide ring 46. As a result, the end surface of the one end side fixed cylinder 24 is prevented from being caught on any one of the outer peripheral surface of the one end 56 of the connection cylindrical part 40 and the inner peripheral surface of the outer tube 50 of the one end side of the tube.

Figure 4 is a diagram showing the configuration of the other end communicating portion 14 according to this preferred embodiment. Based on FIG. 4, the configuration of the other end communicating portion 14 of this preferred embodiment will be described. For this preferred embodiment, the other end communicating portion 14, the inner cylinder 60, the tube end side connecting portion 62, the tube end side sealing member 64, the tube end side guide ring 66, the unit other end connected A unit 68, a unit other end side sealing material 70, and a unit other end side guide ring 72 are provided.

  The inner tube 60 allows the inside and the outside of the tube section 10 to communicate with each other.

The other end connecting portion 62 includes an outer tube 80 at the other end of the tube, a stopper ring 82 at the other end of the tube, and a plug 84 at the other end of the tube. The outer tube 80 on the other end of the tube covers one end 76 of the inner tube 60 with a gap. The pipe other end side stopper ring 82 is arranged in a gap between the inner cylinder 60 and the pipe other end side outer cylinder 80. For this preferred embodiment, the gap is a gap between the tubes and the other end-side tube 88. A projection is provided on the inner edge of the stopper ring 82 on the other end of the tube. The tip of the projection fits into the groove on the surface of the other end side fixed cylinder 28 that has entered the pipe other end side inter-cylinder gap 88. The other pipe 84 is inserted into the gap 88 between the other pipes. The other end of the tube plug 84 fits into a groove formed on the inner peripheral surface of the outer tube 80 of the other end of the tube. By fitting into the groove, the other end of the tube plug 84 does not come off the outer tube 80 of the other end of the tube. The other end of the tube plug 84 does not come off the outer tube 80 of the other end of the tube, so that the stopper ring 82 of the other end of the tube is confined in the gap 88 between the other ends of the tube. As a result, similarly to the tube end side connection part 42, the tube end side connection part 62 connects the one end 76 of the inner cylinder 60 to the tube part 10 so as to be rotatable in the circumferential direction of the other end 22 of the tube part 10. The other end 22 is connected to the other end fixed cylinder 28.

  The other end side sealing member 64 is in close contact with the inner peripheral surface of the other end side fixed cylinder 28 that has entered the inter-cylinder gap 88 on the other end side of the pipe. Thereby, the space between the inner cylinder 60 and the other end side fixed cylinder 28 is sealed. When one end 76 of the inner tube 60 rotates in the circumferential direction of the other end 22 of the tube portion 10, the inner surface of the other end 22 of the tube portion 10 and thus the inner surface of the other end side fixed tube 28 are sealed with the other end of the tube. It will slide along the surface of the material 64.

  When the other end side fixed cylinder 28 enters the tube other end side inter-cylinder gap 88, the other end side guide ring 66 is pushed by the other end side fixed cylinder 28 and advances to the back of the other end side pipe interstice gap 88. . As a result, while the other-end side fixed cylinder 28 advances in the gap 88 between the pipes on the other end side of the pipe, the end face of the fixed cylinder 28 on the other end side is protected by the guide ring 66 on the other end side of the pipe. As a result, the end surface of the other end side fixed cylinder 28 is prevented from being caught at any one of the outer peripheral surface of the inner cylinder 60 and the inner peripheral surface of the tube other end side outer cylinder 80.

The unit other end side connection portion 68 has a unit other end side outer cylinder 90, a unit other end side stopper ring 92, and a unit other end side plug 94. The outer cylinder 90 on the other end of the unit covers the other end 78 of the inner cylinder 60. The unit other end side stopper ring 92 is arranged in a space between the inner cylinder 60 and the unit other end side outer cylinder 90. For this preferred embodiment, the gap is 98 the gap between the unit and the other end-side tube. The unit other end plug 94 is inserted into the unit other end side outer cylinder 90. The unit other end side plug 94 fits into a groove formed on the inner peripheral surface of the unit other end side outer cylinder 90. By fitting into the groove, the plug 84 on the other end of the tube does not come off from the outer cylinder 90 on the other end of the unit. The unit other end side plug 94 does not come off from the unit other end side outer cylinder 90, thereby closing the unit other end side stopper ring 92 between the inner cylinder 60 and the unit other end side outer cylinder 90. As a result, as described above, the unit other end side connection portion 68 is rotatable in the circumferential direction of the other end 78 of the inner cylinder 60, similarly to the tube one end side connection portion 42 and the tube other end side connection portion 62. A pipe (that is, a pipe different from the pipe section 10) is connected to the other end 78 of the inner cylinder 60.

  The unit other end side sealing member 70 is in close contact with the inner peripheral surface of the above-described tube (that is, a tube different from the tube portion 10). Thereby, the space between the inner cylinder 60 and the pipe is sealed. When the pipe rotates in the circumferential direction of the other end 78 of the inner cylinder 60, the inner peripheral surface of the pipe slides along the surface of the unit other end side seal member 70.

  When the above-mentioned tube (that is, a tube different from the tube portion 10) enters the unit other end side inter-cylinder gap 98, the unit other end side guide ring 72 is pushed by the tube, and the unit other end side inter tube gap 98 Go to the back of. As a result, while the pipe is traveling in the unit other end side inter-cylinder gap 98, the end face of the pipe is protected by the unit other end side guide ring 72. As a result, the end face of the tube is prevented from being caught anywhere between the outer peripheral surface of the inner cylinder 60 and the inner peripheral surface of the outer cylinder 90 on the other end of the unit.

[Description of manufacturing method]
Pipe unit according to this preferred embodiment, after the formation of the above-described components in a known manner, it is produced by assembling them as indicated in FIGS. Needless to say, there is no need to complete the assembly in one place. For example, one end communicating portion 12, previously assembled in advance factory and the other end communicating portion 14, the connection between these and the tube portion 10 is applied the pipe unit to a different location (e.g., this preferred embodiment is connected to the plumbing Location).

[Explanation of usage]
Pipe unit according to this preferred embodiment is used for connecting the well-known water supply pipe and the well-known water meter. The connection procedure is, for example, to connect the other end communication part 14 to a known water supply pipe, and then bend the pipe part 10 so that the one end communication part 12 goes to a known water meter to be connected, and then, In addition, one end of the communication section 12 is connected to the water meter. In addition, one end communication part 12 is first connected to the water meter, then the other end communication part 14 is bent so that the pipe part 10 goes to a known water supply pipe, and then the other end communication part 14 is connected to the water supply pipe. You may connect to piping. Of course, methods of using such pipe units in this preferred embodiment is not limited thereto.

Effects of such pipe units in this preferred embodiment]
In such pipe units in this preferred embodiment can suppress more torsion for the connected the tube. In addition, the connection tube 40 is connected to the tube 10 so as to be rotatable in the circumferential direction of the tube 10. Thereby, when the threaded portion at the other end 58 of the connection tube portion 40 is engaged with another threaded portion, the torque generated thereby becomes difficult to be transmitted to the tube portion 10. Since the torque is less likely to be transmitted to the pipe portion 10, the torsion applied to the pipe due to the torque can be suppressed.

Further, when the one end 20 of the pipe part 10 enters the inter-tube space 48 on one end of the pipe, the one-end stopper ring 52 prevents the one end 20 of the pipe part 10 from coming out of the inter-tube space 48 on one end of the pipe. When the one end 20 of the pipe part 10 enters, the one end 20 of the pipe part 10 that once entered is prevented from coming off. That is, when the one end 56 of the tube 10 enters the inter-tube space 48 on one end of the tube when the one end 56 of the connection tube 40 is connected to the one end 20 of the tube 10, the stopper ring 52 of the tube 10 is closed. To prevent the pipe portion 10 from falling out of the inter-tube space 48 on one end of the pipe. Thus, for example, after the other end 58 of the connection tube portion 40 is connected to a different object from the tube portion 10 and the one end 20 of the tube portion 10 is inserted into the one end 56 of the connection tube portion 40, the one end communication portion 12 Connection with the unit 10 becomes possible. After the other end 58 of the connection tube portion 40 is connected to a different object from the tube portion 10, the one end 20 of the tube portion 10 is inserted into the one end 56 of the connection tube portion 40. It is possible to suppress the torsion that the tube 10 receives when connecting the tube 40 and the tube 10. In this case, the other end 58 of the connection tube 40 is connected to an object different from the tube 10 after the one end 20 of the tube 10 is inserted into the one end 56 of the connection tube 40. As a result, for example, compared to the case being connected by a tube section 10 one end communicating portion 12 Toganeji, it is possible to suppress the twisting tube portion 10 during assembly of such pipe units in this preferred embodiment is subjected.

  Further, the tube can be connected to the other end communication portion 14 without providing a screw to the tube to which the other end communication portion 14 is connected.

In addition, when the other end communication portion 14 has the above-described configuration, the connection does not require much time as compared with the case where the other end communication portion has the same structure as a known mechanical joint using a nut. Furthermore, the tube unit according to the reference embodiment, can rotate relative to the tube to the other end communicating portion 14 is connected.

<First Embodiment>
[Structure description]
FIG. 5 is a diagram of the tube unit according to the present embodiment. The configuration of the pipe unit of the present embodiment will be described with reference to FIG. The tube unit includes a tube portion 110, one end communication portion 112, and another end communication portion 114. In FIG. 5, the middle part of the tube part 110 is omitted. The tube 110 allows fluid to pass through. In the case of the present embodiment as well, the fluid passed by the pipe 110 is water, as in the reference embodiment. Of course, the fluid passed by the tube 110 is not limited to this. One end communication portion 112 is connected to one end 120 of tube portion 110. One end communication portion 112 is rotatable in the circumferential direction of one end 120 of tube portion 110. The one end communication part 112 makes the inside and outside of the tube part 110 communicate. To the one end communication portion 112, in addition to the tube portion 110, a different object (for example, a well-known water meter (not shown)) is connected. The other end communication part 114 is connected to the other end 122 of the tube part 110. The other end communication portion 114 connects the inside and the outside of the tube portion 110. To the other end communication part 114, in addition to the pipe part 110, a different pipe (for example, a well-known water pipe not shown) is connected.

  FIG. 6 is a diagram illustrating a configuration of the tube unit 110 according to the present embodiment. In FIG. 6, an intermediate portion of the flexible tube 26 is omitted. The configuration of the tube section 110 of the present embodiment will be described based on FIG. In the case of the present embodiment, the tube section 110 has one end side fixed tube 124, the flexible tube 26, and the other end side fixed tube 28. One end side fixed cylinder 124 is arranged at one end 120 of tube part 110. In the case of this embodiment, the one end side fixed cylinder 124 is a cylindrical member. In the case of the present embodiment, one end side fixed cylinder 124 is connected to one end communication portion 112. A groove 128 is provided over the entire inner peripheral surface of the one end fixed cylinder 124.

  FIG. 7 is a diagram illustrating a configuration of the one end communication unit 112 according to the present embodiment. The configuration of the one end communicating portion 112 of the present embodiment will be described based on FIG. In the case of the present embodiment, the one end communication portion 112 includes a connection tube portion 140, an annular wire rod 142, and one end side seal rings 144 and 144. The connection cylinder 140 is cylindrical. The connection tube 140 connects the inside and the outside of the tube 110. A groove 148 is provided over the entire outer peripheral surface of the one end 156 of the connection cylinder 140 (that is, so as to surround the outer periphery of the one end 156 of the connection cylinder 140). This one end 156 is inserted into one end side fixed cylinder 124 of one end 120 of the tube portion 110. A screw portion is provided at the other end 158 of the connection tube portion 140. The annular wire 142 is formed of a stainless spring wire having a circular cross section. The shape of the annular wire 142 is an annular shape (that is, a C-shape) in which a part is missing. The annular wire 142 extends over the entire circumference of the inner peripheral surface of the fixed cylinder 124 at one end of the tube 110 and the groove 148 provided at one end 156 of the connecting cylindrical portion 140 (that is, so as to go around the inner peripheral surface thereof). ) Fits in the groove 128 provided. Thereby, the one end 156 of the connection cylinder 140 is connected to the one end 120 of the tube 110 so that the annular wire 142 can rotate in the circumferential direction of the one end 120 of the tube 110. In this embodiment, the annular wire 142 constitutes the one end connection portion of the present invention. The one end side seal rings 144, 144 are in close contact with the inner peripheral surface of the one end side fixed cylinder 124 and the outer peripheral surface of the one end 156 of the connection cylinder part 140. Thereby, the space between the connection cylinder 140 and the one-end-side fixed cylinder 124 is sealed. When the connecting cylinder 140 rotates in the circumferential direction of the one end 120 of the tube 110 and thus of the one end fixed cylinder 124, the connecting cylinder 140 slides along the surfaces of the one end side seal rings 144 and 144.

  FIG. 8 is a diagram illustrating a configuration of the other end communication unit 114 according to the present embodiment. The configuration of the other end communication portion 114 of the present embodiment will be described with reference to FIG. In the case of the present embodiment, the other end communication portion 114 is connected to the inner cylinder 160, the other end side connection portion 62, the other end side seal member 64, the other end side guide ring 66, and the other end side of the unit. A unit 68, a unit other end side sealing material 70, and a unit other end side guide ring 72 are provided. In the case of the present embodiment, the inner cylinder 160 is bent. The inner cylinder 160 allows the inside and the outside of the tube section 110 to communicate with each other. The tube other end side connection portion 62 connects one end 176 of the inner tube 160 to the other end fixed tube 28 of the other end 122 of the tube portion 110. The unit other end side connection part 68 connects the other end 178 of the inner cylinder 160 to a pipe (a pipe different from the pipe part 110).

[Description of manufacturing method]
The tube unit according to the present embodiment is manufactured by forming the above-described parts by a known method and assembling them as shown in FIGS. 5 to 8, similarly to the tube unit according to the reference embodiment. You. Needless to say, there is no need to complete the assembly in one place.

[Explanation of usage]
The tube unit according to the present embodiment is used in the same manner as the tube unit according to the reference embodiment.

[Effects of Pipe Unit According to Present Embodiment]
In the tube unit according to the present embodiment, it is possible to further suppress the twist of the connected tube. In addition, even if the flexible tube 26 is bent, the screw portion of the other end 158 of the connection tube portion 140 can be screwed into a screw portion of a water meter or the like.

  Further, the tube can be connected to the other end communication portion 114 without providing a screw to the tube to which the other end communication portion 114 is connected.

  Further, when the other end communication portion 114 has the above-described configuration, compared to the case where the other end communication portion has the same structure as a well-known mechanical joint using a nut, connection does not require much time. Further, the tube unit according to the present embodiment can rotate with respect to the tube to which the other end communication portion 114 is connected.

  Further, if the inner cylinder 160 of the other end communication portion 114 is bent, it can be used in the following places. The place is a place where the connection cannot be established unless the flexible pipe is bent with a radius smaller than the allowable bending radius (about 100 mm). Further, the other end side connection portion 62 of the tube 110 is connected to the other end 122 of the other end 122 of the tube portion 110 so that the one end 176 of the inner tube 160 can rotate in the circumferential direction of the other end 122 of the tube portion 110. It will be connected to the side fixed cylinder 28. This facilitates the positioning of the tube unit according to the present embodiment.

< Second embodiment>
[Structure description]
FIG. 9 is a diagram of the tube unit according to the present embodiment. The configuration of the pipe unit of the present embodiment will be described with reference to FIG. The tube unit includes a tube portion 210, one end communicating portion 112, and the other end communicating portion 214. In FIG. 9, the middle part of the pipe part 210 is omitted. Tube 210 allows fluid to pass through. Also in the case of the present embodiment, the fluid passed by the pipe 210 is water, as in the reference embodiment and the first embodiment. Of course, the fluid that the tube 210 allows to pass is not limited to this. One end communication part 112 is connected to one end 220 of tube part 210. One end communicating portion 112 is rotatable in the circumferential direction of one end 220 of tube portion 210. The other end communication part 214 is connected to the other end 222 of the tube part 210. The other end communication part 214 connects the inside and the outside of the tube part 210. In addition to the tube portion 210, a different tube is connected to the other end communication portion 214.

  FIG. 10 is a diagram illustrating a configuration of the tube unit 210 according to the present embodiment. In FIG. 10, an intermediate portion of the flexible tube 26 is omitted. Based on FIG. 10, the configuration of the tube section 210 of the present embodiment will be described. In the case of the present embodiment, the tube section 210 has one end side fixed tube 124, the flexible tube 26, and the other end side fixed tube 228. One end side fixed cylinder 124 is arranged at one end 220 of tube part 210. The other end side fixed cylinder 228 is arranged at the other end 222 of the tube section 210. A female screw 240 is provided on the inner peripheral surface of the other end side fixed cylinder 228.

The configuration of the other end communication part 214 according to the present embodiment is the same as the configuration of the one end communication part 12 (not the other end communication part 14) according to the reference embodiment. Therefore, the detailed description will not be repeated here. In the present embodiment, of the other end communication portion 214, the one corresponding to the threaded portion of the other end 58 of the connection tube portion 40 of the one end communication portion 12 according to the reference embodiment is the other end side fixed cylinder according to the present embodiment. 228 engages with the internal thread 240.

[Description of manufacturing method]
Similar to the tube unit according to the reference embodiment and the tube unit according to the first embodiment, the tube unit according to the present embodiment is formed by forming the above-described components by a known method, and then, as illustrated in FIGS. 9 and 10. It is manufactured by assembling.

[Explanation of usage]
The tube unit according to the present embodiment is used in the same manner as the tube unit according to the reference embodiment and the tube unit according to the first embodiment.

[Effects of Pipe Unit According to Present Embodiment]
In the tube unit according to the present embodiment, it is possible to further suppress the twist of the connected tube. In addition, the connection tube 140 (the connection tube 140 has one end communicating portion 112) is connected to the tube 10 so as to be rotatable in the circumferential direction of the tube 210. Thereby, when the threaded portion at the other end 158 of the connection cylinder portion 140 is engaged with another threaded portion, the torque generated thereby becomes difficult to be transmitted to the tube portion 10. Since the torque is less likely to be transmitted to the pipe portion 10, the torsion applied to the pipe due to the torque can be suppressed.

  Further, the tube can be connected to the other end communication portion 214 without providing a screw to the tube to which the other end communication portion 214 is connected.

  Further, in the tube unit according to the present embodiment, the connection between the other end communication portion 214 and the tube to which the other end communication portion 214 is connected can be quickly performed. In addition, the other end communication portion 214 can rotate with respect to the tube to which it is connected.

< Third embodiment>
[Structure description]
FIG. 11 is a diagram of the tube unit according to the present embodiment. The configuration of the pipe unit of the present embodiment will be described based on FIG. The tube unit includes a tube portion 210, one end communication portion 112, and the other end communication portion 414. In FIG. 11, the middle part of the tube part 210 is omitted. The other end communication part 414 is connected to the other end 222 of the tube part 210. The other end communication portion 414 makes the inside and outside of the tube portion 210 communicate with each other. The other end communicating portion 414 is connected to a pipe different from the pipe 210 in addition to the pipe 210.

  FIG. 12 is a diagram illustrating a configuration of the other end communication unit 414 according to the present embodiment. Based on FIG. 12, the configuration of the other end communication part 414 of the present embodiment will be described. In the case of the present embodiment, the other end communication portion 414 includes the inner cylinder 460, the unit other end side connection portion 68, the unit other end side sealing material 70, and the unit other end side guide ring 72. The inner cylinder 460 allows the inside and the outside of the tube section 210 to communicate with each other. An external thread is provided at one end 476 of the inner cylinder 460. This male screw is screwed into the female screw 240 in the other end side fixed cylinder 228 of the other end 222 of the tube section 210. The unit other end side connection part 68 connects the other end 478 of the inner cylinder 460 to a pipe (a pipe different from the pipe part 210).

[Description of manufacturing method]
Similar to the tube unit according to the reference embodiment or the tube unit according to the second embodiment, the tube unit according to the present embodiment is formed by forming the above-described parts by a known method, and thereafter, these are illustrated in FIGS. 11 and 12. It is manufactured by assembling.

[Explanation of usage]
The tube unit according to the present embodiment is used in the same manner as the tube unit according to the reference embodiment or the tube unit according to the second embodiment.

[Effects of Pipe Unit According to Present Embodiment]
In the tube unit according to the present embodiment, it is possible to further suppress the twist of the connected tube. In addition, the connection tube 140 (the connection tube 140 has one end communicating portion 112) is connected to the tube 210 so as to be rotatable in the circumferential direction of the tube 210. Thereby, when the threaded portion of the other end 158 of the connection cylinder portion 140 is engaged with another threaded portion, the torque generated thereby becomes difficult to be transmitted to the tube portion 110. Since the torque is less likely to be transmitted to the pipe portion 110, it is possible to suppress the torsion that the pipe receives due to this.

  Further, the tube can be connected to the other end communication portion 414 without providing a screw to the tube to which the other end communication portion 414 is connected.

  Further, when the other end communication portion 414 has the above-described configuration, the connection does not require much time as compared with the case where the other end communication portion has the same structure as a known mechanical joint using a nut. Further, the tube unit according to the present embodiment can rotate with respect to the tube to which the other end communication portion 414 is connected.

  Further, if the inner cylinder 460 of the other end communication portion 414 is bent, it can be used in the following places. The place is a place where the connection cannot be established unless the flexible pipe is bent with a radius smaller than the allowable bending radius (about 100 mm).

<Description of Modification>
The embodiment disclosed this time is an example in all respects. The scope of the present invention is not limited based on the embodiments described above. Of course, various design changes may be made without departing from the spirit of the present invention.

  For example, instead of the other end communication part 114 shown in FIG. 8, the other end communication part 14 shown in FIG. 4 may be connected to the pipe part 110 shown in FIG. Further, the other end communication portion may be indirectly connected to the above-described tube via an arbitrary member. The specific structure of the arbitrary member is not particularly limited. For example, even if one end (the end connected to the other end communicating portion) is cylindrical, and the other end (the end connected to the above-described pipe) is a tube thicker than one end. Good. The member is made of, for example, a synthetic resin. Further, the pipe portion may further have a coating material. This covering material covers the flexible tube 26. Thereby, the flexible tube 26 is less likely to be damaged as compared with the case where there is no coating material. In addition, the surface of the flexible tube 26 is less likely to be dewed than in the case where there is no coating material.

10, 110, 210 ... tube part 12, 112 ... one end communication part 14, 114, 214, 414 ... other end communication part 60, 160, 460 ... inner cylinder 20, 56, 76, 120, 156, 176, 220, 476 ... One end 22, 58, 78, 122, 158, 178, 222, 478 ... The other end 24, 124 ... One end fixed cylinder 26 ... Flexible pipe 28, 228 ... The other end fixed cylinder 40, 140 ... Connection cylinder part 42 ... One-end tube connection part 44 One-end seal member 46 One-end guide ring 48 One-tube inter-tube space 50 One-end outer cylinder 52 One-end stopper ring 54 One-end plug 62 One-end plug 62 The other end side connection part 64 ... the other end side seal member 66 ... The other end side guide ring 68 ... The other end side connection part 70 ... The other end side seal material 72 ... The other end side guide ring 80 ... The other end of the pipe Side outer cylinder 8 ... Stopper ring 84 at the other end of the pipe 84. Plug 88 at the other end of the pipe 90. Cylinder 90 at the other end of the pipe 92. Outer cylinder 92 at the other end of the unit 94. Stopper ring 94 at the other end of the unit. 98. Plug 98 at the other end of the unit. End-to-cylinder gaps 128, 148 Groove 142 Wire rod 144 One end seal ring 240 Female screw

Claims (4)

Pipe section,
One end communicating portion connected to one end of the tube portion and communicating the inside and outside of the tube portion,
A pipe unit comprising: a pipe connected to the other end of the pipe to communicate inside and outside of the pipe with the other end to which a pipe is connected in addition to the pipe;
The said pipe part,
One end side fixed cylinder arranged at one end of the pipe portion and connected to the one end communication portion,
A flexible tube,
The other end of the tube portion is provided with the other end side fixed cylinder connected to the other end communication portion,
The one end communication portion is rotatable in a circumferential direction of the one end of the one end side fixed cylinder of the tube portion,
The other end communication portion,
An inner cylinder having one end connected to the other end-side fixed cylinder at the other end of the tube section, and the other end inserted into the pipe when the pipe is connected to the other end communication section; ,
A unit other end side outer cylinder that covers the other end of the inner cylinder with a gap,
The other end of the inner cylinder and the unit other end side outer cylinder are disposed so as to be rotatable in a circumferential direction of the inner cylinder in a unit other end side cylinder gap which is the gap between the inner cylinder and the unit other end side outer cylinder. When connected to the pipe, the other end of the unit prevents the pipe from falling out of the gap between the other end of the unit by contacting the pipe when the pipe enters the gap between the other end of the unit. With a stopper ring ,
The one end communicating portion is
A connection cylinder portion having one end connected to the one end of the tube portion and a screw portion provided at the other end;
A tube end side connection portion that connects the one end of the connection tube portion to the one end of the tube portion so as to be rotatable in a circumferential direction of the one end of the tube portion,
The pipe one end side connection portion has an annular wire,
A groove in which the annular wire is fitted is provided over the entire outer peripheral surface of the one end of the connection tubular portion,
A tube unit, wherein a groove in which the annular wire is fitted is provided over the entire inner peripheral surface of the one end of the tube portion . A screw is provided at the other end of the tube portion,
The pipe unit according to claim 1, wherein a screw that meshes with the screw of the pipe section is provided at the one end of the inner cylinder. The other end communication portion,
A tube other end side outer cylinder that covers the one end of the inner cylinder with a gap,
The other end of the tube is disposed rotatably in the circumferential direction of the inner tube in a gap between the other end of the tube, which is a space between the one end of the inner tube and the outer tube of the other end of the tube. When the other end of the tube portion enters the gap, the other end of the tube portion contacts the other end of the tube portion to prevent the other end of the tube portion from falling out of the inter-tube gap at the other end of the tube. The tube unit according to claim 1, further comprising:   The pipe unit according to claim 1, wherein the inner cylinder of the other end communication portion is bent.

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