JP6045838B2 - Piping body - Google Patents

Description

The present invention, for example for medical gas transport, about distribution tube that is used in a refrigerant such as transportation of the outdoor unit and indoor unit.

  Conventionally, when packing a tubular body as described above, for example, when foreign matter such as water, dust, or dirt enters or adheres to the tubular body, the purity of the fluid to be conveyed is high when a conducting fluid such as gas or refrigerant is conducted. In addition to being lowered, clogging and stagnation are likely to occur, and therefore it is necessary to plug the tube end of the tube with a plug.

  For example, as shown in the conventional example of FIG. 10, a cap (plugging tool) 210 to be attached to the tube end 1a of the tube body 1 has been proposed (see Patent Document 1).

  The cap 210 has an insertion portion 211 formed in a substantially cylindrical shape similar to the inner peripheral surface of the tube end portion 1a, and a cap formed in a circular shape in a side view having the same diameter as or slightly smaller than the outer diameter of the tube body 1. The main body part 212 is integrally formed, and the cap 210 is inserted by inserting the insertion part 211 along the inner peripheral surface of the pipe end part 1a until the cap main body part 212 comes into contact with the end face of the pipe end part 1a. The tube end 1a of the tube body 1 can be reliably plugged.

  However, as described above, the cap main body portion 212 is formed in a circular shape in a side view having the same diameter as or slightly smaller than the outer diameter of the tube body 1, and therefore, as shown in FIG. Even when the cap 210 is still attached, there is a problem that the pipe connecting member 100 such as an elbow can be fitted.

  Specifically, the cap 210 is intended to prevent foreign matters such as water, dust, and dust from entering the inside of the pipe body 1 until the pipe body 1 is piped. When connecting and piping with the pipe end 1a with the cap 210 attached, the inside of the pipe body 1 connected and piped with the pipe connecting member 100 is connected to gas or refrigerant. The fluid cannot be conducted, and the original purpose of the tube body 1 cannot be achieved.

  As shown in FIG. 11, the inner space 100a of the pipe connecting member 100 is formed such that the inner diameter of the outer fitting portion 101 attached to the pipe end portion 1a has a diameter corresponding to the outer diameter φ of the tube body 1. The inner diameter of the portion is the same as the inner diameter of the tube body 1. The inner diameter and outer diameter of the tube body 1 and the tube connection member 100 are standardized by, for example, JIS standards.

  For this reason, if the pipe connection member 100 is externally fitted with the cap 210 that has been forgotten to be attached to the pipe end 1a, the cap 210 cannot be taken out through the inside of the pipe connection member 100, and only after the pipe connection member 100 is removed. The cap 210 could not be removed.

  In particular, when a plurality of pipes 1 are connected by a plurality of pipe connecting members 100 and piped, the cap 210 that is still attached cannot be visually observed from the outside of the pipe connecting member 100. It is also difficult to identify.

  Further, in the case of a complicated piping route, even if the cap 210 remains attached at an intermediate connection point, the pipe connection member 100 at that point cannot be removed, and it is necessary to separate the pipe route from the end of the piping route. There was a risk that it would be a very time-consuming work.

Japanese Utility Model Publication No. 61-106691

The present invention aims to while still attached to the tube end of the tube, to provide a piping body that can prevent, for example a tube connecting member of the elbow or the like is connected.

The present invention is composed of a tube body that allows the tube connection member to be externally fitted to the outer peripheral surface, and a tube inner plug cap that can be attached to and detached from the tube end portion of the tube body. An insertion portion formed in a substantially cylindrical shape corresponding to the inner peripheral surface of the tube end portion in the tube body, and a cap main body portion that abuts on the end surface of the tube end portion and closes the tube end portion are integrally configured, At least a part of the cap main body in the circumferential direction is provided with an outer diameter protruding portion that protrudes radially outward from the outer peripheral surface of the tube body, and the inner cap for pipe is attached to the tube end portion of the tube body In addition, the pipe body is shrink-wrapped with a heat-shrinkable covering material so that the outer peripheral surface of the inner cap for pipe and the outer peripheral surface of the pipe body are substantially flush with each other.

The above-mentioned outer diameter protruding portion is a portion of the cap body portion such as a portion protruding from the outer peripheral surface of the cap body portion or a corner portion of the cap body portion formed in a rectangular shape in front view with respect to a tubular body having a circular cross section. You may comprise by a part of shape.
The above-mentioned protruding end portion is a portion that protrudes most in the outer-diameter protruding portion, and refers to a portion that is the furthest away from the center of the cap body on the outer diameter side.

  In addition, the tube body is a tube body having a conduction space that allows conduction of the conduction fluid inside, and can be a tube body having various shapes such as a circular cross section, an elliptical shape, and a rectangular shape. Note that the above-described conducting fluid can be constituted by, for example, oxygen, nitrous oxide, carbon dioxide, nitrogen, therapeutic air, driving air, non-therapeutic air, exhaust gas, and the like.

According to this invention, it is possible to prevent the pipe connection member from being connected while being attached to the pipe end of the pipe body.
Specifically, an insertion portion formed in a substantially cylindrical shape corresponding to the inner peripheral surface of the tube end portion in the tube body, and a cap main body portion that abuts the end surface of the tube end portion and closes the tube end portion. By mounting the integrally configured tube cap plug on the tube end of the tube body, it is possible to reliably achieve the original purpose of the tube plug cap, for example, foreign matter such as water and dust entering the inside of the tube body. Can do.

  Further, at least a part of the cap body portion in the circumferential direction protrudes radially outward from the outer peripheral surface of the tube body, and the protruding end portion has an inner radius of an outer fitting portion of the tube connecting member. Since it has an outer diameter projecting part with a long length from the center of the cap body, a pipe connecting member having an outer fitting part formed with an inner diameter corresponding to the outer diameter of the pipe body is fitted to the pipe end part. Even when trying to connect, the outer diameter protruding portion protruding outward from the outer peripheral surface of the tube body is caught and the tube connecting member cannot be connected. Therefore, it is possible to prevent the pipe inner member cap from being forgotten and connected to the pipe connecting member while being attached to the pipe end.

Furthermore, since the outer-diameter protruding portion of the cap body portion protrudes radially outward from the outer peripheral surface of the tube body, the cap body portion exposed from the tube end portion of the tube body is held by a finger or the like, for example. At this time, the finger is easily caught on the outer protruding portion of the cap main body, and the extraction force necessary for extracting the inner cap cap from the tube end is reliably applied to the inner cap cap. The
As a result, the pipe inner cap can be easily removed from the pipe end of the pipe body.

  In addition, since the cap main body portion of the tube inner cap cap is formed in an external shape different from the outer peripheral surface of the above-described tube body, it is structurally conspicuous, and the tube inner cap cap is attached to the tube end portion of the tube body. This improves the visibility of the fact that the pipe cap is forgotten to be removed.

In addition, when a pipe body with a pipe cap plug is placed on a flat surface such as a table or a floor, the pipe body tends to roll in the circumferential direction. The resistance necessary for contacting the flat portion and preventing the tube from rolling is provided.
As a result, it is possible to prevent the tube body to which the tube inner cap cap is attached from rolling on its own.

  Here, the above-described tubular body can be made of a material such as metal or resin. The inner cap of the pipe may be made of any material as long as it can be inserted into the end of the pipe, such as a resin such as polyethylene, vinyl chloride, urethane, or a solid wood material such as cork.

  The pipe inner cap is attached to the pipe end of the pipe body, and the heat-shrinkable covering material is provided so that the outer peripheral surface of the pipe inner plug cap and the outer peripheral face of the pipe body are substantially flush with each other. By making the piping body shrink-wrapped in the above, the outer peripheral surface of the inner plug cap for pipe and the outer peripheral surface of the pipe body equipped with the inner cap cap for pipe can be covered and protected.

  More specifically, after the pipe body described above is covered with a heat-shrinkable covering material so that the outer peripheral surface of the pipe inner plug cap and the entire outer peripheral surface of the pipe body to which the inner pipe cap is attached are covered. The covering material is heated and contracted by a heating means such as a heater or hot air, and is shrink-wrapped in close contact with the outer peripheral surface of the tube inner cap and the outer peripheral surface of the tube body.

  As a result, the covering material is covered and adhered over the outer peripheral surface of the tube inner cap cap and the outer peripheral surface of the tube body, so that the tube inner cap cap falls off from the tube end portion of the tube body or the plugging position is shifted. Can be prevented. In addition, there is no gap between the insertion portion of the tube inner plug cap and the tube end portion of the tube body, and the tube end portion of the tube body is closed.

  Furthermore, when covering the covering material so that the entire outer peripheral surface of the tube is covered by setting the protruding height of the protruding portion of the outer diameter of the inner cap for the tube to, for example, 10% or less of the outer diameter of the tube. The covering material can be smoothly covered so that the outer peripheral surface of the inner cap of the pipe and the outer peripheral surface of the pipe body are covered without being caught by the protruding portion outside the diameter.

  Furthermore, the projecting height of the outer-diameter protruding portion is low, and the covering material is coated so that the outer peripheral surface of the inner cap for pipe and the outer peripheral surface of the tube body to which the inner cap for pipe is attached are substantially flush. can do.

  Thus, when a predetermined number of pipe bodies formed by shrink-wrapping pipe bodies closed at both ends with an inner cap cap for pipes are packed in a state where the outer peripheral surfaces of each pipe body are in contact with each other, for example, the outer protrusion Aligning and accommodating a predetermined number of tubes fitted with inner cap caps for pipes within an alignment width obtained by integrating the outer diameters of a predetermined number of tubes arranged in parallel without causing the section to be bulky or obstructive Can do.
  As a result, it is not necessary to change the size of the packing box for packing the shrink-wrapped piping body, and it can be packed in the packing box used so far.

  Here, the above-mentioned covering material can be comprised with the packaging tube etc. which were formed, for example with the heat-shrinkable plastic film.
  In addition, you may form cuts, such as a perforation, in the coating | covering material which covers the inner cap cap for pipes attached to the pipe end part of a pipe body. That is, only the covering material that covers the inner plug cap for pipes is peeled off, and the inner plug cap for pipes is pulled out from the tube end of the pipe body, and therefore, the covering material on which the type of conducting fluid through which the pipe body conducts is printed is peeled off. Can be prevented.

As an aspect of the present invention, the protruding height of the outer diameter protruding portion can be set to a height of 5% or more and 10% or less with respect to the outer diameter of the tubular body.
According to this invention, the external fitting of the pipe connecting member can be reliably prevented, and the tubular body to which the pipe inner cap is attached can be prevented from being bulky.

  More specifically, the sizes of the outer diameter and inner diameter of the pipe body and the pipe connecting member are generally standardized by, for example, a standard such as JIS. Then, the inner diameter of the outer fitting portion of the pipe connecting member fitted on the pipe end portion of the pipe body is formed to be about 2% larger than the outer diameter of the pipe end portion in consideration of an allowable error and the like, and an assembly is provided. ing. Therefore, if the protruding height of the outer protruding portion is 5% or less with respect to the outer diameter of the tubular body, the outer fitting portion is fitted from a state deviated in one direction from the center of the tube end portion or from an oblique direction. Then, there is a possibility that the pipe connecting member can be connected by externally fitting the outer fitting portion without catching the outer diameter protruding portion. On the other hand, by setting the protruding height of the outer diameter protruding portion to a height of 5% or more with respect to the outer diameter of the tube body, it is temporarily deviated from the center of the tube end portion in one direction. Even when trying to externally fit the outer fitting portion from an oblique direction, the outer diameter protruding portion is always caught and the connection of the pipe connecting member can be prevented.

  In addition, a tubular body closed with an internal cap for a pipe is generally packed in a wooden box or a corrugated cardboard box, for example, and packed, but the projecting height of the outer projecting portion is set to the outside of the tubular body. When the height is set to be 10% or more with respect to the diameter, the outer diameter projecting portion widens the interval with the other tube body, and the packing mode becomes bulky.

  On the other hand, by setting the protruding height of the outer diameter protruding portion to a height of 10% or less with respect to the outer diameter of the tube body, the outer diameter protruding portion comes into contact with another tube body. It can prevent that the space | interval with another pipe body spreads more than needed, and a packing aspect becomes unnecessarily bulky.

  As a result, without changing the size of the packing box for packing a plurality of pipes fitted with the conventional inner cap cap for pipes not provided with the above-mentioned outside protrusion, the packing box of the size used so far can be used. Can be packed. In addition, since the gap with other pipes does not spread more than necessary, it is possible to prevent the pipes from rattling up and down, left and right, and the outer peripheral surface of the pipes from being damaged or damaged.

  In addition, since the protrusion height of the outer diameter protruding portion is set to 10% or less of the outer diameter of the tubular body, a step generated between the protruding end of the outer diameter protruding portion and the outer peripheral surface of the tubular body. Can be reduced. As a result, for example, when a plurality of tubes are placed horizontally, the entire tube does not bend as much as deformation remains, and the conducting fluid is prevented from remaining or staying inside the tube. it can.

  Further, as an aspect of the present invention, the cap main body portion is set to an outer diameter in which an outer periphery of the cap main body portion and an outer peripheral surface of the tube body are substantially flush with each other, and the outer protrusion portion is set to the cap main body. It can be provided on the outer peripheral surface of the part.

According to this invention, it is possible to reliably close the pipe end by attaching the pipe inner cap. In addition, since the outer diameter projecting portion is provided on the outer circumferential surface of the cap main body portion set to an outer diameter that is substantially flush with the outer circumferential surface of the tubular body, the outer diameter projecting from the outer circumferential surface of the tubular body. The height of the part can be kept low. For example, even if an outer diameter protruding portion is caught by an outer fitting pipe connection member, in the case of an outer diameter protruding portion that is easily deformed due to its high height, the outer diameter protruding portion can be deformed to force the tube connection member to be externally fitted. Although there is a possibility, the diameter outside protrusion part with the low height from an outer peripheral surface cannot change easily, and can prevent external fitting of a pipe connection member reliably.
In addition, the cross-sectional shape of the said outside protrusion part can be comprised, for example in cross-sectional shapes, such as arc shape, semicircle shape, and triangular shape.

Further, as an aspect of the present invention, a plurality of the outer diameter protruding portions can be arranged in the circumferential direction of the cap main body portion.
According to the present invention, even if the pipe connecting member is fitted from the direction intersecting the pipe inner cap cap, any one of the plurality of radially protruding portions arranged in the circumferential direction of the cap main body portion is caught. The outer fitting of the pipe connecting member can be reliably prevented. In addition, since a plurality of outer diameter protruding parts are arranged in the circumferential direction, even if the inner cap for pipe is firmly attached to the pipe end of the pipe, it is easy and easy from the pipe end of the pipe. Can be removed.

Specifically, when holding the cap body portion of the tube inner cap cap attached to the tube end portion of the tube body with, for example, a finger, the finger is against the plurality of radially protruding portions formed on the cap body portion. Since it is hooked, the pulling force required to remove the tube inner cap cap from the tube end portion of the tube body is reliably applied to the entire cap body portion.
As a result, the inner cap for a pipe firmly fixed to the pipe end of the pipe can be easily removed from the pipe end of the pipe.

Moreover, as an aspect of this invention, the said outside protrusion part can be arrange | positioned six or less places at predetermined intervals with respect to the circumferential direction of the said cap main-body part.
According to the present invention, even when a plurality of pipes closed with a pipe inner cap are aligned and packed in the same direction, it can be prevented from becoming bulky more than necessary.

  In detail, when packing a plurality of pipes closed with a pipe cap, for example, by packing them in a wooden box or a cardboard box, or by bundling a plurality of pipes into one, Outer diameter protrusions of the inner cap cap for pipes attached to the tube end of the body can easily enter between the tubes arranged at adjacent positions, and contact between the outer diameter protrusions is avoided.

Therefore, when packing a predetermined number of pipes equipped with pipe inner cap caps, for example, in a state where the pipes are in contact with each other's outer peripheral surfaces, the outer diameter protrusions are not bulky or obstructive. It is possible to align and accommodate a predetermined number of pipes to which pipe inner caps are attached without being unnecessarily bulky.
As a result, it is not necessary to change the size of the packing box for packing the pipe body to which the inner cap cap for pipes is attached, and packing can be performed in the packing box used so far.
Here, the above-mentioned 6 places or less includes, for example, 2 places, 3 places, 4 places, 5 places, 6 places, and the like.

In addition, as an aspect of the present invention, the outer-diameter protruding portion is directed in the extraction direction in which the inner plug cap for pipe is extracted from the pipe end portion of the pipe body, and an extraction force for extracting the inner cap cap for pipe is applied. The protruding shape can be set.
According to the present invention, it is possible to easily remove the inner cap for a pipe from the pipe end portion of the pipe body without applying an unnecessarily large extraction force.

More specifically, since the inner cap cap for the tube can be applied to the protruding direction in which the inner cap for the tube is extracted from the tube end of the tube body with respect to the outer projecting portion of the cap main body portion, the extraction force is larger than necessary. Even without applying a force, the inner cap for pipe can be easily removed from the pipe end of the pipe body.
As a result, even if the inner cap for pipe is firmly fixed to the tube end portion of the tube body, it can be reliably extracted from the tube end portion of the tube body.

Further, as an aspect of the present invention, the outer-diameter protruding portion can be set to a protruding shape capable of identifying the conducting fluid according to a plurality of types of conducting fluid that conducts the inside of the tubular body.
According to the present invention, it is possible to accurately specify the type of conducting fluid through which the pipe body conducts only by visually confirming the shape of the inner cap for pipe attached to the pipe end of the pipe body.

  More specifically, if the outer diameter protruding portion of the inner cap for pipe attached to the tube end of the tube body is visually confirmed, any of the plurality of types of conducting fluids can be determined from the protruding shape of the outer diameter protruding portion. It is possible to accurately identify whether the pipe body is in conduction.

  As a result, the protruding shape of the outer-diameter protruding portion corresponds to the type of the conducting fluid through which the pipe body conducts, so that the type of the conducting fluid can be accurately grasped and piping errors can be prevented. .

According to the present invention, in a state attached to the tube end of the tube, it is possible to provide a piping body that can prevent, for example a tube connecting member of the elbow or the like is connected.

Sectional drawing which shows the tube body closure state by the inner cap cap for pipes of 1st Embodiment. Structure explanatory drawing of the inner cap cap for pipes shown in FIG. Sectional drawing which shows the shrink-wrap state of the inner cap cap for pipes, and a pipe body. Sectional drawing which shows the packing state of the piping body which carried out shrink packaging. Sectional drawing which shows the tube body closure state by the inner cap cap for pipes of 2nd Embodiment. Structure explanatory drawing of the inner cap cap for pipes shown in FIG. Sectional drawing which shows the packing state of the piping body which carried out shrink packaging. Structure explanatory drawing of the inner cap cap for pipes of 3rd Embodiment. Structure explanatory drawing of the inner cap cap for pipes of 4th Embodiment. Sectional drawing of the tubular body of a closure state with the conventional cap. Sectional drawing of the state which connected the pipe connection member to the pipe body of a closure state with the conventional cap.

An embodiment of the present invention will be described in detail with reference to the drawings.
(First embodiment)
As a specific example, a tube inner cap 10 of the first embodiment for closing the tube end 1a of the tube 1 used for transporting medical gas will be described with reference to FIGS.
FIG. 1 is a cross-sectional view of the tube plugged state by the tube plug cap 10 of the first embodiment, and FIG. 2 is a configuration explanatory view of the tube plug cap 10 shown in FIG. Specifically, FIG. 2 (a) shows a perspective view of the inner cap cap 10 for a tube when viewed obliquely from the front, and FIG. 2 (b) shows a rear view when the inner cap cap 10 for a tube is viewed from the rear.

  The tube inner cap 10 of the first embodiment is a cap that is detachable in the insertion / removal direction A that is inserted into and removed from the tube end portion 1a of the tube body 1 that allows the tube connection member 100 to be externally fitted to the outer peripheral surface 1b. And an insertion portion 12 formed in a substantially cylindrical shape corresponding to the inner peripheral surface of the tube end portion 1a in the tube body 1, and a cap body portion that abuts the end surface of the tube end portion 1a and closes the tube end portion 1a. 11 are integrally formed of synthetic resin.

  The proximal end side (cap body 11 side) of the insertion portion 12 is formed to have an outer diameter that allows close contact with the inner periphery of the tube end portion 1a of the tube body 1 in a watertight state or an airtight state. Further, the distal end side of the insertion portion 12 is formed in a conical taper surface having a gradually decreasing diameter from the proximal end side to the distal end side of the insertion portion 12, and with respect to the tube end portion 1 a of the tubular body 1. And has a cross-sectional shape that allows smooth insertion.

The cap body 11 has a circular shape in front view formed with the same diameter as the outer diameter of the tube 1, and the end surface of the cap body 11 on the insertion portion 12 side is the tube end of the tube 1 that is in contact with the cap body 11. It is formed on a flat surface that allows close contact with la in a watertight or airtight state. In addition, the outer peripheral surface 11 a of the cap main body 11 formed in a circular shape in front view formed with the same diameter as the outer diameter of the tube body 1 is substantially flush with the outer peripheral surface 1 b of the tube body 1.
The outer diameter of the cap body 11 may be set to an outer diameter in a range that is not less than the inner diameter of the tube body 1 and not more than the outer diameter of the tube body 1.

  A part of the outer peripheral surface 11 a of the cap body 11 in the circumferential direction B protrudes radially outward from the outer peripheral surface 1 b of the tube body 1, and the inner radius r ( As shown in FIG. 11, the radially outer projecting portion 13 having a long length H from the cap body center CL of the projecting end portion 13 a is integrally formed.

  The cross-sectional shape of the radially protruding portion 13 is a semicircular shape from the outer peripheral surface 11a of the cap main body portion 11 toward the radially outward direction in the cross-sectional shape of the pipe inner cap 10 cut along an orthogonal cross section orthogonal to the insertion / removal direction A. It is formed to protrude. The protruding height h of the outer diameter protruding portion 13, that is, the height from the outer peripheral surface 11 a of the cap main body portion 11 to the protruding end portion 13 a of the outer diameter protruding portion 13 is the outer diameter φ of the tube body 1, that is, the tube body 1. The height is set to 5% or more and 10% or less of the diameter (see FIG. 2B).

  For example, the protrusion height h of the outer-diameter protruding portion 13 in the case of the tubular body 1 called the nominal diameter 10 having an outer diameter φ of 12.7 mm is 5% or more and 10% or less of the outer diameter φ of the tubular body 1. The protruding height h of the radially outer protruding portion 13 in the case of the tubular body 1 which is formed of 1 mm and is called the nominal diameter 20 having an outer diameter φ of 22.2 mm is 5% or more and 10% of the outer diameter φ of the tubular body 1. The following 2 mm is formed. Note that the protruding height h of the outer diameter protruding portion 13 may be set so as to increase by a height included in the range of 0.3 mm to 1 mm, for example, according to the outer diameter φ of the tube body 1.

  When the tube end 1a of the tube 1 is closed with the tube cap 10 configured as described above, the insertion portion 12 of the tube cap 10 is connected to the tube end 1a of the tube 1 as shown in FIG. On the other hand, the cap body 11 is inserted and attached in the insertion / removal direction A until the end surface on the insertion portion 12 side contacts the end surface of the tube end portion 1a.

  As a result, the cap body portion 11 formed so as to be flush with the outer peripheral surface 1b of the tube body 1 closes the tube end portion 1a, so that the tube end portion 1a of the tube body 1 is securely plugged. The stopper cap 10 can be attached and foreign matter such as water and dust can be prevented from entering the inside of the tube body 1.

  Further, since at least a part of the cap body 11 in the circumferential direction is provided with an outer diameter protruding portion 13 that protrudes from the outer peripheral surface 1b of the tube body 1 in the radially outward direction, the outer diameter φ of the tube body 1 is increased. Even if a pipe connecting member 100 (see FIG. 11) having an outer fitting portion 101 formed with a corresponding inner diameter is externally fitted to the pipe end portion 1a and connected, the outer circumferential surface 1b of the pipe body 1 is radially outward. The outer diameter protruding portion 13 protruding toward the hook is caught and the pipe connecting member 100 cannot be connected.

  Specifically, as described above, the inner space 100a of the pipe connecting member 100 is formed such that the inner diameter of the outer fitting portion 101 attached to the pipe end portion 1a has a diameter corresponding to the outer diameter of the tube body 1, and other portions. The inner diameter of the tube body 1 is formed to be the same as the inner diameter of the tube body 1, so that when the tube connecting member 100 is fitted outside the tube end portion 1 a with the forgotten tube inner cap attached to the tube end 1 a, The pipe inner plug cap cannot be taken out through the pipe, and the pipe inner plug cap can be removed only after the pipe connecting member 100 is removed.

  In particular, when a plurality of pipe bodies 1 are connected by a plurality of pipe connecting members 100 and piped, the pipe cap plugs that are still attached cannot be seen from the outside of the pipe connecting member 100. It is also difficult to specify the location.

  Furthermore, in the case of a complicated piping route, even if the pipe cap cap remains attached at an intermediate connection location, the pipe connection member 100 at that location cannot be removed, and in order from the end of the piping route. This is a very time-consuming work.

  However, the outer peripheral surface 11a of the cap main body part 11 is provided with a radially outer protruding part 13 in which the length H of the protruding end part 13a from the cap main body CL is longer than the inner radius r of the outer fitting part 101 in the pipe connecting member 100. When the pipe inner plug cap 10 is attached to the pipe end 1 a of the pipe body 1, the radially protruding portion 13 is caught and the connection of the pipe connecting member 100 can be prevented. Therefore, it is possible to prevent the pipe connecting member 100 from being connected and piped while the pipe end cap 10 is forgotten to be removed and attached to the pipe end 1a.

  Furthermore, since the protrusion height h of the outer diameter protruding portion 13 is set to a height of 5% or more and 10% or less with respect to the outer diameter φ of the tube body 1, the outer fitting of the pipe connecting member 100 is ensured. It is possible to prevent the tube body 1 to which the inner cap cap 10 for a tube is attached from becoming bulky.

  More specifically, the sizes of the outer diameter φ and the inner diameter of the pipe body 1 and the pipe connecting member 100 are generally standardized by, for example, a standard such as JIS. Then, the inner diameter of the outer fitting portion 101 in the pipe connecting member 100 fitted on the pipe end portion 1a of the pipe body 1 is formed to be about 2% larger than the outer diameter φ of the pipe end portion 1a in consideration of tolerances and the like. And asobi is provided.

  Therefore, if the protrusion height h of the outer diameter protruding portion 13 is 5% or less with respect to the outer diameter φ of the tube body 1, the outer fitting portion is inclined in one direction or obliquely from the center of the tube end portion 1 a. If the outer fitting portion 101 is fitted, there is a possibility that the outer fitting portion 101 is fitted and the pipe connecting member 100 can be connected without being caught by the outer protruding portion 13. By setting the height to 5% or more with respect to the outer diameter φ of the body 1, the outer fitting portion 101 is tentatively fitted from a state deviated in one direction from the center of the tube end portion 1 a or from an oblique direction. Even so, the outer-diameter protruding portion 13 is always caught, and the connection of the pipe connecting member 100 can be prevented.

  Further, the cap main body 11 is set to an outer diameter φ in which the outer peripheral surface 11 a of the cap main body 11 and the outer peripheral surface 1 b of the tube body 1 are substantially flush with each other, and the outer radial protruding portion 13 is set to the cap main body 11. Since the outer peripheral surface 11a is provided, the pipe end 1a can be reliably closed by attaching the pipe inner cap cap 10. Further, since the outer peripheral surface 11a of the cap main body 11 set to an outer diameter φ that is substantially flush with the outer peripheral surface 1b of the tube body 1 is provided with the outer-diameter protruding portion 13, the outer peripheral surface 1b of the tube body 1 The protruding height h of the protruding outer diameter protruding portion 13 can be kept low.

  For example, in the case of the outer-diameter protruding portion 13 that is easily deformed because the protruding height h is high even if the outer-diameter protruding portion 13 is caught on the externally fitting tube connecting member 100, the outer-diameter protruding portion 13 is deformed to connect the pipe. Although there is a possibility that the member 100 can be forcibly externally fitted, the outside-diameter protruding portion 13 having a low protruding height h from the outer peripheral surface 11a is not easily deformed, and the external fitting of the pipe connecting member 100 can be reliably prevented.

Furthermore, since the outer-diameter protruding portion 13 of the cap main body portion 11 protrudes outward in the radial direction from the outer peripheral surface 1b of the tube body 1, the cap main body portion 11 exposed from the tube end portion 1a of the tube body 1 is removed. For example, when held with a finger or the like, the finger is easily hooked to the outer-diameter protruding portion 13 of the cap main body portion 11, and the extraction force necessary for extracting the inner cap 10 for a tube from the tube end portion 1 a of the tube body 1 is sufficient. It is reliably applied to the inner cap 10 for a pipe.
As a result, the pipe inner cap 10 can be easily detached from the pipe end 1 a of the pipe body 1.

Further, when the pipe body 1 to which the pipe inner cap cap 10 is attached is placed on a flat surface such as a table or a floor, for example, the pipe body 1 tries to roll in the circumferential direction. The outer protrusion 13 is brought into contact with the flat surface portion, and a resistance necessary for preventing the tube body 1 from rolling is given.
As a result, it is possible to prevent the tube body 1 to which the tube inner plug cap 10 is attached from rolling on its own.

Next, as described above with reference to FIGS. 3 and 4, the entire outer peripheral surface of the tube body 1 whose both ends are closed by the tube inner cap cap 10 is shrunk by the packaging tube 15 formed of a heat-shrinkable plastic film. The packaged piping body 16 will be described.
FIG. 3 is a cross-sectional view showing a shrink-wrapped state of the pipe inner cap 10 and the pipe body 1, and FIG. 4 is a cross-sectional view showing a packed state of the shrink-wrapped piping body 16.

More specifically, the above-described piping body 16 covers the packaging tube 15 made of a heat-shrinkable resin so that the entire outer peripheral surface of the tubular body 1 having both the pipe end caps 10 fitted with the pipe inner caps 10 is covered. Is configured. Specifically, the pipe body 16 is formed by covering the entire tube body 1 with the pipe caps 10 attached to both pipe end portions 1a, and then, for example, a heating means such as a heater or hot air (not shown). The package tube 15 is thermally shrunk by heating to a predetermined temperature, and shrink-wrapped in a state of being in close contact with the outer periphery of the tube inner cap cap 10 and the outer peripheral surface 1b of the tube body 1.
As a result, the packaging tube 15 can cover and protect the outer periphery of the tube inner cap cap 10 and the outer peripheral surface 1b of the tube body 1 to which the tube inner plug cap 10 is attached.

  Since the packaging tube 15 covers and adheres to the outer periphery of the tube inner cap cap 10 and the outer peripheral surface 1b of the tube body 1, the tube inner cap cap 10 falls off from the tube end portion 1 a of the tube body 1, or is closed. Can be prevented from shifting. In addition, there is no gap between the insertion portion 12 of the tube inner plug cap 10 and the tube end 1a of the tube 1 so that the tube end 1a of the tube 1 can be reliably closed.

  Furthermore, since the protrusion height h of the outer diameter protruding portion 13 of the inner cap cap 10 for pipe is set to 10% or less of the outer diameter φ of the tube body 1, the packaging tube 15 is entirely connected to the tube body 1. The covering tube 15 can be covered smoothly without being caught by the outer-diameter protruding portion 13.

  In addition, as shown in FIG. 4, the pipe body 16 that is shrink-wrapped as described above is aligned in a state where the outer peripheral surfaces of the pipe bodies 1 are in contact with each other, and packed in a predetermined number of boxes in the packing box 17, A predetermined number of piping bodies 16 are packed together, for example. In this case, when the protrusion height h of the outer diameter protruding portion 13 is set to a height of 10% or more with respect to the outer diameter φ of the tube body 1, the distance from the other pipe body 16 is widened by the outer diameter protruding portion 13. The packing aspect becomes bulky, but by setting the protruding height h of the outer diameter protruding portion 13 to a height of 10% or less with respect to the outer diameter φ of the tube body 1, the outer diameter protruding portion 13 becomes the other. It can prevent that the space | interval with the other piping body 16 by contact | abutting with this piping body 16 spreads more than needed, and the packing aspect of the piping body 16 becomes unnecessarily bulky.

  As a result, the packing of the size that has been used so far can be used without changing the size of the packing box 17 that packs a plurality of piping bodies 16 equipped with the conventional inner cap cap 10 for a pipe that does not include the outer diameter protruding portion 13. It can be packed in the box 17. Moreover, since the space | interval with the other piping body 16 does not spread more than necessary, it can prevent that the piping body 16 rattles up and down, right and left, and the outer peripheral surface of the piping body 16 is damaged or damaged. .

  As described above, when packing a predetermined number of pipe bodies 16, the radially outer protruding portion 13 of the pipe inner plug cap 10 may become an obstacle, or the protruding height h of the radially outer protruding portion 13 may be bulky. The pipe body 16 is aligned in a state in which the outer peripheral surfaces of the pipe bodies 1 are in contact with each other, and the predetermined number of shrink-wrapped pieces within the alignment width obtained by integrating the outer diameters of the predetermined number of pipe bodies 1 arranged in parallel. The piping body 16 can be aligned and accommodated.

Moreover, in order to set the protrusion height h of the outer-diameter protruding portion 13 to 10% or less of the outer diameter φ of the tube body 1, the step generated between the outer-diameter protruding portion 13 and the tube body 1 can be reduced. it can.
As a result, when a predetermined number of shrink-wrapped pipe bodies 16 are stacked up and down (see FIG. 4), as the deformation remains, the entire pipe body 1 is not greatly bent and is easily restored to the original state. Therefore, the conducting fluid can be prevented from remaining or staying in the tube body 1. Furthermore, the tubular body 1 does not rattle up and down, right and left, and the outer peripheral surface 1b of the tubular body 1 can be prevented from being damaged or damaged.

  As a result, the shrink-wrapped piping bodies 16 can be packed together in the same direction. Moreover, it is not necessary to change the size of the packing box 17 for packing the shrink-wrapped piping body 16 in consideration of the height of the outer protrusion 13, and packing is performed with the packing box 17 used so far. Can do.

(Second Embodiment)
Next, the pipe inner cap 20 of the second embodiment will be described with reference to FIGS. FIG. 5 shows a cross-sectional view of the tube body closed by the tube inner cap cap 20, and FIG. 6 shows a configuration explanatory view of the tube inner cap cap 20 shown in FIG. The perspective view which looked at the inner cap cap 20 for pipes from diagonally forward is shown, FIG.6 (b) has shown the rear view which looked at the inner cap cap 20 for pipes from back. Further, FIG. 7 shows a cross-sectional view of the packaged state of the pipe body 26 that is shrink-wrapped.
In the second embodiment, parts having the same configuration as in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 5 and 6, the tube inner cap cap 20 includes a cap body portion 11 and an insertion portion 12 in the same manner as the tube inner cap cap 10 described above. Further, the pipe inner plug cap 20 has the outer diameter protruding portions 23 arranged at six locations on the outer peripheral surface 11 a of the cap main body portion 11 at a predetermined interval with respect to the circumferential direction B.

  The cross-sectional shape of the outer-diameter protruding portion 23 is the same as that of the outer-diameter protruding portion 13 of the pipe inner cap cap 10 described above, and the protruding height h is also formed at the same height. That is, the cross-sectional shape of the outer diameter protruding portion 23 protrudes from the outer peripheral surface 11a of the cap main body portion 11 in the radially outer direction, and from the inner radius r of the outer fitting portion 101 in the pipe connecting member 100, the protruding end portion 23a. The cap body center CL is formed so as to protrude in a semicircular shape having a long length H from the center CL.

  As described above, the inner cap cap 20 for a pipe having the outer-diameter protruding portions 23 arranged at six positions in the circumferential direction B on the outer peripheral surface 11a of the cap body 11 is the pipe for the first embodiment described above. While exhibiting the same effect as the inner cap cap 10, the effects described below can be achieved. Specifically, even when the outer fitting portion 101 of the pipe connecting member 100 is fitted from the direction intersecting with the inner cap cap 20 for the pipe, a plurality of radially protruding portions 23 arranged in the circumferential direction of the cap main body portion 11. Any of the above will be caught, and the external fitting of the pipe connecting member 100 can be reliably prevented. In addition, since a plurality of outer-diameter protruding portions 23 are arranged in the circumferential direction, the tube end portion of the tube body 1 even if the tube inner cap 20 is firmly attached to the tube end portion 1a of the tube body 1. It can be easily and easily removed from 1a.

More specifically, when the cap main body 11 of the pipe inner plug cap 20 attached to the pipe end 1a of the pipe body 1 is held by, for example, a finger or the like, a plurality of outside protrusions 23 formed on the cap main body 11 are formed. Therefore, the pulling force necessary to remove the tube inner cap cap 20 from the tube end portion 1 a of the tube body 1 is reliably applied to the entire cap body portion 11.
As a result, the inner cap cap 20 for a tube that is firmly fixed to the tube end 1 a of the tube 1 can be easily removed from the tube end 1 a of the tube 1.

  In addition, the tube body 1 closed with the pipe inner cap cap 20 in which the six outer diameter protruding portions 23 are arranged at predetermined intervals with respect to the circumferential direction B on the outer peripheral surface 11a of the cap main body portion 11 is the packaging tube 15. Even when a plurality of coated pipe bodies 16 are aligned and packed in the same direction, it can be prevented from being bulky more than necessary.

  More specifically, the plurality of piping bodies 16 closed by the pipe inner cap cap 20 are packed in, for example, a wooden box or a cardboard box, or the plurality of piping bodies 16 are bundled together. In this case, the outer diameter protruding portion 23 of the inner pipe cap 20 attached to the tube end 1a of the tube body 1 can easily enter between the piping body 16 and the piping body 16 arranged at adjacent positions, and the outer diameter protruding portion. The contact between the 23 is avoided.

Therefore, when a predetermined number of pipe bodies 16 with pipe caps 20 attached thereto are boxed, for example, in a state where the pipe bodies 16 are in contact with each other's outer peripheral surfaces, the outer diameter protruding portion 23 is bulky or obstructive. A predetermined number of pipe bodies 16 fitted with the inner cap cap 20 for pipes can be aligned and accommodated without becoming unnecessarily bulky.
As a result, it is not necessary to change the size of the packing box 17 for packing the pipe body 1 to which the inner cap cap 20 for pipes is attached, and the packing box 17 that has been used so far can be packed.

(Third embodiment)
Then, the inner cap cap 30 for pipes of 3rd Embodiment is demonstrated with FIG. FIG. 8 shows a configuration explanatory view of the tube inner cap cap 30 of the third embodiment. Specifically, FIG. 8A shows a perspective view of the tube inner cap cap 30 as viewed obliquely from the front, and FIG. b) shows a rear view of the inner cap cap 30 for pipes as viewed from the rear.
Note that, in the third embodiment, the same reference numerals are given to the same components as those in the first embodiment, and detailed description thereof will be omitted.

A pipe inner plug cap 30 of the third embodiment shown in FIG. 8 is a square outer protrusion 33 instead of the outer protrusion 13 formed to protrude in a semicircular cross section in the pipe inner cap 10. It has.
The cross-sectional shape of the radially outer projecting portion 33 projects from the outer peripheral surface 11a of the cap main body portion 11 in the radially outward direction, and from the inner radius r of the outer fitting portion 101 in the pipe connecting member 100, the cap of the projecting end portion 33a. It is formed into a square cross section with a long length H from the body center CL (see FIGS. 8A and 8B).

  As described above, the tube inner cap cap 30 having the outer-diameter protruding portion 33 formed in an angular square shape has the same effect as the tube inner cap cap 10 of the first embodiment described above and is formed in a circular shape. In other words, since the outer-diameter protruding portion 33 is formed in an angular shape with a planar configuration with respect to the cap body portion 11, the insertion portion 12, and the tube body 1 which are curved surfaces, the tube body 1 and the insertion portion 12 are Although it is small, it differs greatly in appearance, so that the visibility is improved with the pipe inner cap cap 30 attached, and it is possible to reliably prevent forgetting to remove it.

(Fourth embodiment)
Next, the inner cap cap 40 for a pipe according to the fourth embodiment will be described with reference to FIG. FIG. 9 is a diagram for explaining the configuration of the inner cap cap 40 for a pipe according to the fourth embodiment. Specifically, FIG. 9A shows a perspective view of the inner cap cap 40 for a pipe when viewed obliquely from the front, and FIG. b) shows a rear view of the tube inner cap cap 40 as viewed from the rear.
Note that in the fourth embodiment, identical symbols are assigned to parts having the same configuration as in the first embodiment and detailed description of the configuration is omitted.

9 is similar to the outer diameter protruding portion 13 in place of the outer diameter protruding portion 13 formed to protrude in a semicircular cross section in the inner tube cap 10 of the fourth embodiment. The outer-diameter protrusion part 43 formed in the semicircle shape of the cross section is provided.
However, the protruding portion 43 outside the diameter is provided with a pulling force for pulling out the inner cap cap 40 for the tube toward the pulling direction C in which the inner cap cap 40 for the tube is pulled out from the tube end 1 a of the tube body 1. It is formed in a curved surface shape (see FIGS. 9A and 9B). In other words, the cap body 41 is formed in a curved surface that gradually increases from one end side to the other end side.

  Note that at least the protruding end portion 33a on the multi-end side, which is the highest portion, of the outer diameter protruding portion 43 protrudes from the outer peripheral surface 11a of the cap main body portion 11 in the radially outward direction, and the outer diameter of the pipe connecting member 100 is increased. The length H from the cap main body center CL to the projecting end portion 33a is set longer than the inner radius r of the fitting portion 101.

As described above, the inner pipe cap 40 having the outer-diameter protruding portion 43 formed in a smooth curved surface shape in the extraction direction C has the same effect as the inner pipe cap 10 of the first embodiment described above. At the same time, since the inner cap cap 40 for the pipe can be efficiently extracted in the extraction direction C in which the inner cap cap 40 for the pipe is extracted from the pipe end 1a of the pipe body 1, it is larger than necessary. The inner cap cap 40 for a tube can be easily removed from the tube end 1a of the tube body 1 without applying a pulling force.
As a result, even if the inner cap cap 40 for a tube is firmly fixed to the tube end 1 a of the tube 1, it can be reliably extracted from the tube end 1 a of the tube 1.

  In addition, the outer diameter protrusion part 33 of the inner cap cap 30 for pipes in 3rd Embodiment and the outer diameter protrusion part 43 of the inner plug cap 40 for pipes in 4th Embodiment are followed along the outer peripheral surface 11a of the cap main-body part 11. A plurality of them may be arranged at a predetermined interval with respect to the circumferential direction B. In this case, substantially the same operations and effects as those of the second embodiment can be achieved.

  In the first to fourth embodiments, the cross-sectional shape of the outward projecting portions 13, 23, 33, and 43 can be specified according to a plurality of types of conductive fluid that conducts through the inside of the tube body 1. The diameter of the inner cap caps 10, 20, 30, 40 for pipes attached to the pipe end 1 a of the pipe body 1 is set to a simple protruding shape (for example, a semicircular shape, a square shape, a cross-sectional shape such as a curved surface shape). The pipe | tube which conducts any conduction | electrical_connection fluid among several types of conduction | electrical_connection fluid from the shape of the outer diameter projection | projection part 13,23,33,43 only by visually confirming the shape of the outer protrusion part 13,23,33,43. Whether it is the body 1 can be specified correctly.

  As a result, since the protruding shape of the outer diameter protruding portions 13, 23, 33, 43 corresponds to the type of the conducting fluid through which the tube body 1 is conducted, the type of the conducting fluid can be accurately grasped. It is possible to prevent piping mistakes from occurring.

In the correspondence between the configuration of the present invention and the embodiment,
The covering material of the present invention corresponds to the packaging tube 15,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Tube body 1a ... Pipe end part 10, 20, 30, 40 ... Inner cap cap 11 for pipes ... Cap main-body part 12 ... Insertion part 13, 23, 33, 43 ... Outer diameter protrusion part 13a, 23a, 33a, 43a ... Projection end 15 ... packaging tube 16 ... piping body 17 ... packing box 100 ... pipe connecting member 101 ... outer fitting part h ... height φ ... outer diameter

Claims (7)

It is composed of a tube body that allows external fitting of the tube connection member to the outer peripheral surface, and a tube inner cap cap that can be attached to and detached from the tube end portion of the tube body,
The inner cap for pipe is
An insertion portion formed in a substantially cylindrical shape corresponding to the inner peripheral surface of the tube end in the tube,
A cap body part that abuts on the end surface of the pipe end part and closes the pipe end part is integrally configured;
At least a part of the cap body portion in the circumferential direction is provided with a radially-outward protruding portion that protrudes radially outward from the outer peripheral surface of the tubular body,
With attaching the plug cap for the tube to the tube end portion of the tubular body, the outer peripheral surface and is shrink with heat shrinkable covering material so as to be substantially flush of the tubular body and the outer peripheral surface of the plug cap for the tube Wrapped piping body. The protruding height of the outer diameter protruding portion is
The piping body according to claim 1, wherein the piping body is set to a height of 5% or more and 10% or less with respect to the outer diameter of the pipe body . The cap body portion is set to an outer diameter such that the outer periphery of the cap body portion and the outer peripheral surface of the tubular body are substantially flush with each other,
The piping body according to claim 1 or 2, wherein the outer-diameter protruding portion is provided on an outer peripheral surface of the cap main body portion. The outer diameter protruding portion,
The piping body according to claim 1, wherein a plurality of pipe bodies are arranged in a circumferential direction of the cap main body portion. The outer diameter protruding portion,
The piping body according to claim 4, wherein six or less portions are arranged at a predetermined interval with respect to a circumferential direction of the cap main body portion. The outer diameter protruding portion,
The tube inner cap cap is set in a protruding shape to which a pulling force for pulling out the tube inner plug cap is provided in a pulling direction in which the tube inner plug cap is pulled out from the tube end portion of the tube body. The piping body according to one. The outer diameter protruding portion,
The piping body according to any one of claims 1 to 6, wherein the piping body is set in a protruding shape capable of specifying the conducting fluid according to a plurality of kinds of conducting fluids that conduct through the inside of the tubular body .

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