JP7358165B2 - Piping connection members, connection joints - Google Patents

Description

The present invention relates to a pipe connection member and a connection joint.

As is well known, condensate generated by an air conditioner installed indoors is collected by, for example, an air conditioner equipped with a drain up structure that is raised to a position higher than the drain port of the air conditioner in the middle of the drain piping flow path. It is common to drain the water outdoors using a drain pipe.

When constructing such drain pipes for air conditioning equipment, flexible pipes are used for the drain-up structure. 2. Description of the Related Art A technique related to a drain pipe for air conditioning equipment that is made into a unit component by integrating a pipe and a pair of joint members in advance has been disclosed (see, for example, Patent Document 1).

On the other hand, in drain-up structures, flexible hoses are widely used in consideration of handling during construction and maintenance.
In addition, when connecting the drain port of an air conditioner and a flexible hose, for example, connect the drain pipe connected to the drain port of the air conditioner and the upstream side of the flexible hose (air conditioner side) using a connection joint such as an elbow. It is common to do so.

Therefore, in order to ease the connection work and reduce the effort and man-hours when constructing drain pipes for air conditioning equipment, for example, technology related to drain pipes for air conditioning equipment using a detachable connection joint structure has been disclosed. (For example, see Patent Document 2.)

Furthermore, in order to facilitate the work of attaching the drain hose to the drain outlet and removing the drain hose from the drain outlet, a technology related to a drain pipe for air conditioning equipment using a pair of connection joints has been disclosed ( For example, see Patent Document 3).

Japanese Patent Application Publication No. 2012-233675 Japanese Patent Application Publication No. 2018-054127 JP 2017-146082 Publication

However, compared to the connection structures described in Patent Documents 1 to 3, there is a need for a drain pipe connection structure that can be connected more easily and efficiently in a detachable manner. Furthermore, it is desirable that the drain be reliably watertight.

The present invention has been made in consideration of these circumstances, and provides a pipe connecting member and a connecting joint that can easily and efficiently connect and detach the drain pipe of an air conditioner and a flexible hose. The purpose is to

In order to solve the above problems, the present invention proposes the following means.
The invention according to claim 1 provides a pipe connecting member comprising: a pipe body formed in a cylindrical shape and forming a flow path in cooperation with a socket member; a piping member having a plurality of protruding pieces protruding radially outward; a through hole in which a cylindrical portion of the socket member is disposed; and a through hole formed in the cylindrical portion of the socket member. a bottom wall portion on which a seat surface is formed on which the flange portion is seated; a protrusion locking part that extends toward the side where the protrusion is located and locks with the protrusion part; a protrusion passage that is formed between the protrusion locking part and through which the protrusion part can pass; and a locking mechanism that locks the piping member and the clamping member at a locking position in a circumferential direction around the pipe axis, the cylindrical portion of the socket member being inserted into the through hole. and the piping member and the tightening member are attached by rotating the piping member and the tightening member to the locking position with the projecting piece portion positioned on the seat surface side. and connects the piping member and the socket member, and the piping member is formed with a water stop part in which a water stop member is disposed between the pipe member and the socket member, and the piping member is formed with a water stop part in which a water stop member is disposed between the pipe member and the socket member. The parting line along is formed so as to pass through an area other than the water stop portion .

According to the pipe connection member according to the present invention, the pipe connection member includes a pipe member, a tightening member, and a locking mechanism.
Further, the piping member includes a tube body and a plurality of projecting pieces formed on the outer peripheral surface of the tube end of the tube body and protruding radially outward, and the tightening member includes a through hole and a seat surface. a bottom wall portion formed with a protrusion, a protrusion locking portion formed at a position in the circumferential direction around the tube axis corresponding to the protrusion portion of the bottom wall portion and extending toward the side where the seat surface is located; A protrusion passage formed between the one locking parts and through which the protrusion part can pass.
Then, by passing the protruding piece of the piping member through the protruding piece passage of the tightening member and relatively rotating the piping member and the tightening member around the pipe axis, the protruding piece of the piping member The protrusion locking portion of the tightening member is locked at a locking position in the circumferential direction around the tube axis, and the piping member and the tightening member are locked at the locking position.
At this time, by placing the tube of the socket member in the through hole of the tightening member and seating the flange portion formed on the tube on the seat surface, the piping member and the tightening member are attached. The piping member and the socket member are connected, and the pipe body of the piping member and the socket member cooperate to form a flow path.
On the other hand, a load is applied in the opposite direction to that applied when the piping member and the clamping member are locked, and the lock mechanism releases the locking between the protruding piece of the piping member and the protruding piece locking part of the tightening member. be able to.
As a result, the piping member and the clamping member can be removed by further rotating the piping member and the clamping member relative to each other.
As a result, the socket member and the piping member can be easily and efficiently attached and detached, and the drain pipe on the air conditioner side and the flexible hose can be easily and efficiently detachably connected.
In addition, in a state where the protruding piece and the protruding piece locking part are locked, the relative position of the piping member and the tightening member in the tube axis direction is maintained at a constant dimension.

The invention according to claim 2 is the piping connection member according to claim 1, in which the protrusion locking part and the protrusion locking part are arranged on opposing surfaces facing each other. The pipe member is characterized in that a tapered portion is formed that causes the piping member to approach the seating surface side in the tube axis direction by being rotated toward the position.

According to the pipe connecting member according to the present invention, the protruding piece is rotated toward the locking position on the opposing surface where the protruding piece locking part and the protruding piece part face each other, so that the piping is connected in the pipe axis direction. Since a tapered portion is formed to move the member closer to the seat side, by rotating the piping member and the tightening member to the locking position, the piping member can be gradually moved toward the seat side of the tightening member. By moving, the piping member and the socket member can be reliably brought into contact with each other with a small force.

The invention according to claim 3 provides a pipe connecting member, comprising: a pipe body formed in a cylindrical shape and forming a flow path in cooperation with a socket member; a piping member having a plurality of protruding pieces protruding radially outward; a through hole in which a cylindrical portion of the socket member is disposed; and a through hole formed in the cylindrical portion of the socket member. a bottom wall portion on which a seat surface is formed on which the flange portion is seated; a protrusion locking part that extends toward the side where the protrusion is located and locks with the protrusion part; a protrusion passage that is formed between the protrusion locking part and through which the protrusion part can pass; and a locking mechanism that locks the piping member and the clamping member at a locking position in a circumferential direction around the pipe axis, the cylindrical portion of the socket member being inserted into the through hole. and the piping member and the tightening member are attached by rotating the piping member and the tightening member to the locking position with the projecting piece portion positioned on the seat surface side. At the same time, the piping member and the socket member are connected, and the protruding piece is rotated toward the locking position on an opposing surface where the protruding piece locking part and the protruding piece part face each other. As a result, a tapered portion is formed that brings the piping member closer to the seating surface side in the pipe axis direction of the piping member, and the piping member has an end water stopper between the pipe body and the socket member. A water stop portion for arranging the member is formed, and a parting line along the pipe axis direction of the piping member is formed to pass through an area other than the water stop portion.

According to the piping connection member according to claim 1 , since the piping member is formed with the water stop part in which the water stop member is disposed between the piping member and the socket member, water flowing between the piping member and the socket member is formed. Drainage can be reliably stopped.

Here, it is possible to apply various types of water-stopping members, such as an end face packing disposed between the end face of the socket member and the end face of the pipe body, and an outer periphery of the socket member. Circumferential packing disposed between the face and the inner circumferential surface of the tube body, or between the inner circumferential surface of the socket member and the outer circumferential surface of the tube body, and a circumferential packing formed correspondingly between the socket member and the tube body. A diagonal packing placed on an inclined surface or the like can be applied.

According to the pipe connecting member according to claim 3 , since the pipe member is formed with a water stop portion in which the end face water stop member is disposed between the pipe body and the socket member, using the pipe connecting member, By arranging the relative position (interval) between the socket member and the piping member in the tube axis direction to a set dimension, it is possible to generate an appropriate surface pressure on the end face water stop member.
As a result, water can be shut off reliably and stably in the water shutoff section.

According to the piping connecting member according to claims 1 to 3 , the parting line along the pipe axis direction of the piping member is formed to pass through an area other than the water stop portion, so that drainage is prevented by the parting line. It is possible to stably suppress the occurrence of dents and scratches in the water stop member that may lead to leakage.
As a result, water can be reliably stopped by the water stop member.

The invention according to claim 4 is a connection joint, characterized by comprising the pipe connecting member according to any one of claims 1 to 3 and the socket member.

According to the connection joint according to the present invention, the drain pipe on the air conditioner side and the flexible hose can be easily and efficiently connected detachably.

According to the pipe connection member and the connection joint according to the present invention, the drain pipe on the air conditioner side and the flexible hose can be easily and efficiently removably connected.

1 is a schematic configuration diagram illustrating an example of a connection structure between a drain pipe and a flexible hose to which a bayonet type joint according to a first embodiment of the present invention is applied; FIG. FIG. 1 is a vertical cross-sectional view illustrating a schematic configuration of a bayonet type joint according to a first embodiment. FIG. 1 is an exploded longitudinal cross-sectional view illustrating a schematic configuration of a bayonet type joint according to a first embodiment. FIG. 1 is a perspective view illustrating a schematic configuration of a bayonet type joint according to a first embodiment. FIG. 3 is a conceptual diagram illustrating the action of the locking mechanism when installing the bayonet type joint according to the first embodiment, in which (A) shows a state in which the protruding piece passes through the protruding piece passage, and (B) shows the state in which the protruding piece passes through the protruding piece passage; FIG. (C) shows the engaged state of the protruding piece and the protruding piece locking part when the tightening member is rotated in the circumferential direction around the pipe axis. indicates a locked state. It is a longitudinal cross-sectional view explaining the schematic structure of the bayonet type joint concerning a 2nd embodiment of the present invention.

<First embodiment>
A first embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
FIG. 1 is a schematic configuration diagram illustrating an example of a connection structure between a drain pipe and a flexible hose to which a bayonet type joint according to a first embodiment of the present invention is applied. Further, FIG. 2 is a vertical cross-sectional view illustrating a schematic configuration of a bayonet type joint according to one embodiment, FIG. 3 is a vertical cross-sectional view showing an exploded state, and FIG. 4 is a vertical cross-sectional view illustrating a schematic configuration of a bayonet type joint according to an embodiment. FIG.
1 to 5, reference numeral 1 indicates a drain pipe connection structure for air conditioning equipment, 10 indicates a bayonet type joint (connection joint), 100 indicates a bayonet type connecting member, 110 indicates a piping member, and 120 indicates a bayonet type coupling member. Reference numeral 140 indicates a tightening member, reference numeral 140 indicates a socket member, and reference numeral 150 indicates a water stop member.

As shown in FIG. 1, the drain pipe connection structure 1 for air conditioning equipment includes, for example, a drain pipe 31 provided in an air conditioner 3 installed on the ceiling, and a flexible hose 4 for discharging drain generated from the drain pipe 31 to the outside. and a bayonet type joint (connection joint) 10 for connecting.
Here, the flexible hose 4 can be constituted by, for example, a two-layer covered hose formed by covering the outer periphery of a soft or relatively hard vinyl chloride hose with a heat insulating material such as foamed urethane.

In the first embodiment, for example, a drain hose 5 made of a crosslinked polyethylene pipe is provided between the drain pipe 31 and the bayonet type joint (connection joint) 10, and a drain hose 5 made of a crosslinked polyethylene pipe is provided between the bayonet type joint (connection joint) 10 and the flexible hose 4. An elbow 6 is provided at the.
That is, as the connection structure of this embodiment, the drain pipe 31, drain hose 5, bayonet type joint (connection joint) 10, elbow 6, and flexible hose 4 are connected in this order from the air conditioner 3 side, and the end of the flexible hose 4 is connected in this order. A drain pipe 7 is connected to the drain pipe 7, and drain is discharged through these pipe materials. The flexible hose 4 is arranged so as to rise from the elbow 6.

The air conditioner 3 and the drain pipe connection structure 1 for air conditioning equipment are suspended from a building ceiling surface T by hanging members 8, as shown in FIG.
Further, it is preferable that the drain hose 5, the bayonet type joint (connection joint) 10, and the elbow 6 be covered with a heat insulating material (not shown) or provided with a heat retaining function to prevent dew condensation.

As shown in FIGS. 2 to 4, the bayonet type joint (connection joint) 10 includes, for example, a bayonet type connecting member 100, a socket member 140, and an end face water stop member 150.
In the first embodiment, as shown in FIG. 1, for example, the socket member 140 of the bayonet joint 10 is connected to the drain hose 5 with an adhesive or the like.

In this embodiment, the socket member 140 is made of, for example, hard vinyl chloride resin.
Further, as shown in FIGS. 2 to 4, the socket member 140 includes, for example, a cylindrical portion 141 and a flange portion 144.
Note that the material for forming the socket member 140 can be set arbitrarily, and resins other than vinyl chloride resin may be used as the material.
Furthermore, the material for forming the piping member 140 is preferably one that can be bonded with an adhesive and has high chemical resistance (for example, condensed ethanol, etc.).

The cylindrical portion 141 is, for example, arranged in a circular cylindrical shape and stands upright from the flange portion 144 toward one end side F.
Furthermore, a circular hole 140H is formed inside the cylindrical portion 141 along the tube axis O direction.

The flange portion 144 is, for example, formed into a disk shape.
Further, at the center of the flange portion 144, for example, a circular hole 144H having a smaller diameter than the circular hole 140H is formed along the tube axis O.
Further, one end side F of the flange portion 144 is, for example, formed into a flat surface and serves as a seating surface 144F.
Further, the other end side R of the flange portion 144 is, for example, a flat surface, and serves as a water stop surface 144R on which the end face water stop member 150 is disposed.
Note that a flange portion 144 may be formed in the middle of the tube portion 141 in the tube axis O direction.

As shown in FIGS. 2 to 4, the bayonet type connecting member 100 includes, for example, a piping member 110 and a tightening member 120.
Furthermore, in this embodiment, the bayonet type connecting member 100 includes a locking mechanism 100L. Further, in this embodiment, the locking mechanism 100L includes, for example, a locking flat portion (piping member side) 110L and a locking flat portion (tightening member side) 120L, which will be described later.

The end face water stop member (water stop member) 150 is configured, for example, by an O-rig that is formed so as to be attachable to a water stop recess (water stop portion) 112U formed in the piping member 110, which will be described later.
The water-stop surface 123 of the water-stop recess (water-stop portion) 112U and the water-stop surface 144R apply pressure in the direction of the tube axis O, thereby acting as an end face water-stop member.

The piping member 110 will be described below with reference to FIGS. 2 to 4.
As shown in FIGS. 2 and 3, the piping member 110 includes, for example, a tube body 111 and a plurality of projecting pieces 114 extending from the tube body 111 toward the outer periphery.
Further, in this embodiment, the piping member 110 is made of transparent polypropylene resin.
Note that the material forming the piping member 110 can be arbitrarily set, including whether it is transparent or not, and resins other than polypropylene resin may be used as the material. Furthermore, it is preferable that the material forming the piping member 110 has high chemical resistance (for example, condensed ethanol, etc.).

The tube body 111 is formed, for example, in a cylindrical shape, and a through hole 110H is formed inwardly along the tube axis O direction.
Further, the tube body 111 includes, for example, an enlarged diameter portion 112 whose outer circumferential surface is tapered in diameter from the middle in the direction of the tube axis O toward the one end side F.

The through hole 110H is arranged coaxially with the circular hole 140H of the socket member 140 when the bayonet joint (connection joint) 10 is assembled, and is connected to the circular hole 140H of the socket member 140 and the circular hole 144H. They are configured to work together to form a flow path through which the drain flows.

In this embodiment, the protruding pieces 114 are arranged on the outer circumferential surface of the enlarged diameter portion 112 at equal intervals in the circumferential direction, and are constituted by substantially arc-shaped flat plates extending radially outward. ing.
Further, in this embodiment, for example, three protruding pieces 114 are formed.

Further, in this embodiment, the other end side R of the projecting piece portion 114 is formed with a tapered portion (piping member side) 110T and a locking flat portion (piping member side) 110L.

The tapered portion (piping member side) 110T, for example, rotates the piping member 110 and the tightening member 120 relative to each other in the direction of tightening rotation when installing the bayonet type connecting member 100. It is constituted by an inclined surface that is displaced from one end side F to the other end side R along the circumferential direction around the center.

A flat surface constituting a locking flat part (piping member side) 110L is formed at the terminal end of the tapered part (piping member side) 110T in the tightening rotation direction.

In addition, the piping member 110 has, for example, an annular water cutoff recess (water cutoff portion) 112U on the end face 112F on the socket member 140 side for arranging the end face water cutoff member 150 between the pipe member 110 and the socket member 140. It is formed.
Further, the water-stopping recess (water-stopping portion) 112U has a bottom surface as a water-stopping surface 113, and is configured to be water-stopped at the end face by an end-face waterstop member 150.

Moreover, the water stop recess (water stop part) 112U is configured in this embodiment so that the water stop performance is not reduced by a parting line formed when the piping member 110 is molded.
For example, when a parting line is arranged in the water stop recess (water stop part) 112U, the parting line may be removed.
Further, when a parting line is formed along the direction of the pipe axis O of the piping member 110, the parting line is formed so as to pass through an area other than the water stop recess (water stop part) 112U.

Specifically, in the molding die for molding the piping member 110, a portion corresponding to the water-stopping recess (water-stopping portion) 112U in which the end-face water-stopping member 150 is disposed is, for example, the end face of the core or the molding die of the main mold. It is configured to be formed by a surface, and is set so that, for example, a dividing surface between the main molds and a boundary between the main mold and the core are not arranged.

In addition, by forming the parting line in the circumferential direction of the water stop recess (water stop part) 112U instead of in the direction of the pipe axis O, leakage of drain through the water stop recess (water stop part) 112U is prevented. It may be configured to suppress this.

Next, the tightening member 120 will be explained with reference to FIGS. 2 to 4.
As shown in FIGS. 2 to 4, the tightening member 120 includes, for example, a bottom wall portion 121, a bag-shaped tube portion 122, a protrusion locking portion 124, and a protrusion passageway 126.
Further, in this embodiment, the tightening member 120 is made of transparent polypropylene resin.
Note that the material forming the tightening member 120 can be arbitrarily set, including whether it is transparent or not, and resins other than polypropylene resin may be used as the material. Furthermore, it is preferable that the material forming the piping member 110 has high chemical resistance (for example, condensed ethanol, etc.).

The bottom wall portion 121 is, for example, formed in a disk shape.
Further, a through hole 121H is formed at the center of the bottom wall portion 121, for example, along the tube axis O.
The bottom wall portion 121 is formed, for example, in a substantially disk shape, and a circular through hole 121H centered on the tube axis O is formed at the center thereof.
The tube body 141 of the socket member 140 can be inserted into the through hole 121H.

In addition, the through hole 121H is arranged coaxially with the pipe body 141 of the socket member 140 and the circular hole 110H of the piping member 110 when the bayonet type joint (connection joint) 10 is assembled, and is inserted and arranged. The circular hole 140H of the socket member 140, the circular hole 110H of the piping member 110, and the circular hole 144H are configured to form a flow path through which the drain flows.

Further, on the other end side R of the bottom wall portion 121, a seat surface 121R made of, for example, a flat surface is formed.
A seating surface 144F of the socket member 140, in which the tube body 141 is disposed in the through hole 121H, is seated on the seating surface 121R.

The bag-like cylinder part 122 is formed, for example, in a cylindrical shape, and stands upright from the bottom wall part 121 toward the other end side R.
Moreover, a space 122S formed in a substantially cylindrical shape along the direction of the tube axis O is formed inside the bag-like tube portion 122.
Further, the bag-like cylinder portion 122 includes a protrusion locking portion 124, a protrusion passage 126, and a protrusion guide groove 127.

The protruding piece locking parts 124 are arranged on the other end side R of the bag-shaped tube part 122 at circumferential positions corresponding to the three protruding pieces 114 at intervals in the circumferential direction around the tube axis O.
Further, the protrusion locking portion 124 has a circular arc shape centered on the tube axis O that protrudes radially inward toward the tube axis O with respect to the groove bottoms of the protrusion passage 126 and the protrusion guide groove 127. It is made up of walls.
The protruding piece 114 of the piping member 110 can be locked (held) therein.

Further, in this embodiment, a tapered part (tightening member side) 120T and a locking flat part (tightening member side) 120L are formed on one end side F of the protrusion locking part 124.

For example, the tapered portion (tightening member side) 120T is configured to rotate the pipe member 110 and the tightening member 120 in a direction in which the bayonet type connecting member 100 is attached. It is constituted by an inclined surface that is displaced from the other end side R to the one end side F along the circumferential direction centered on the axis O.
Further, the tapered portion (tightening member side) 120T is an inclined surface corresponding to the tapered portion (piping member side).

Further, in this embodiment, as described above, the locking flat portion (tightening member side) 120L constitutes the locking mechanism 100L together with the locking flat portion (piping member side) 110L.
The circumferential position where the locking flat portion (tightening member side) 120L and the locking flat portion (piping member side) 110L lock is the locking position where the piping member 110 and the tightening member 120 are locked. It is said to be a sight.

For example, the protruding piece passage 126 extends from the surface of the other end side R of the bag-like cylinder part 122 toward one end side along the tube axis O direction, and extends radially outward from the inner circumferential surface of the bag-like cylinder part 122. It is constituted by a concave groove that is concave on one side and extends from the surface of the other end R.
Further, the protrusion passages 126 are formed between the three protrusion locking portions 124 at intervals in the circumferential direction around the tube axis O.
Moreover, the interval in the circumferential direction of the protruding piece passage 126 corresponds to that of the protruding piece part 114 .

In this embodiment, the protrusion guide groove 127 is formed on the inner circumferential surface of the bag-shaped cylinder portion 122, extends along the circumferential direction from the bottom of one end side F of each protrusion passage 126, and extends along the circumferential direction from the bottom of one end side F of each protrusion passage 126. It is constituted by a concave groove recessed radially outward from the inner circumferential surface of the cylindrical portion 122 .
Further, the protrusion passages 126 are formed between the three protrusion locking portions 124 at intervals in the circumferential direction around the tube axis O.
The protrusion guide groove 127 serves as a guide passage when the protrusion 114 that has passed through the protrusion passage 126 rotates the piping member 110 and the tightening member 120 in the circumferential direction around the pipe axis O. It consists of

Hereinafter, with reference to FIG. 5, the operation of the locking mechanism when attaching the bayonet joint will be explained.
FIG. 5 is a conceptual diagram illustrating the action of the locking mechanism 100L when the bayonet type connecting member 100 is attached, and FIG. (B) shows the state of engagement between the protruding piece 114 and the protruding piece locking part 124 when the piping member 110 and the tightening member 120 are rotated in the circumferential direction around the tube axis O. 1 shows a state in which the protruding piece part 114 and the protruding piece locking part 124 are arranged at the locking position, and the piping member 110 and the tightening member 120 are locked.

(1) First, as shown in FIG. 5A, the piping member 110 is attached to the clamping member 120 by aligning the protruding piece 114 of the piping member 110 with the protruding piece passage 126 of the tightening member 120. It is moved from the other end side R to the one end side F.
As a result, the protrusion portion 114 passes through the protrusion passage 126 and is inserted to the bottom of the protrusion passage 126 in the direction of the tube axis O.
Further, the tapered portion (piping member side) 110T and the tapered portion (tightening member side) 120T are arranged so as to be engageable in the direction of the tube axis O.

(2) Next, as shown in FIG. 5(B), the piping member 110 and the tightening member 120 are rotated in the tightening direction indicated by the arrow P in the circumferential direction around the tube axis O.
As a result, the tapered portion (piping member side) 110T and the tapered portion (tightening member side) 120T engage with each other.
Specifically, the inclined surface of the tapered portion (piping member side) 110T and the inclined surface of the tapered portion (tightening member side) 120T are brought into contact with each other and brought together in the tightening direction, so that the protruding piece 114 is engaged with the protruding piece. It moves relative to the section 124 in the direction indicated by arrow Q in the tube axis O direction.

(3) Next, as shown in FIG. 5(C), the flat surface of the protrusion portion 114 and the flat surface of the protrusion locking portion 124 are placed in the locking position, and the tapered portion (piping member side ) 110T and the tapered portion (tightening member side) 120T are disengaged from each other.
As a result, piping member 110 and tightening member 120 are locked.

According to the bayonet type joint (connection joint) 10 according to the first embodiment, the piping member 110 and the tightening member 120 can be attached by rotating the piping member 110 and the tightening member 120 in the tightening direction. .
Moreover, the piping member 110 and the clamping member 120 can be removed by rotating the piping member 110 and the clamping member 120 in the opposite direction to the clamping direction.
As a result, the socket member 140 and the piping member 110 can be easily and efficiently attached and detached with one touch without using any tools.

Moreover, according to the bayonet joint 10 according to the first embodiment, when the protruding piece part 114 and the protruding piece locking part 124 are locked, the piping member 110 and the tightening member 120 are relative to each other in the direction of the pipe axis O. The position can be maintained at constant dimensions.
As a result, the piping member 110 and the tightening member 120 can be reliably attached.
Moreover, since a predetermined surface pressure can be applied to the end face water stop member 150, water can be stably stopped.

Further, according to the bayonet joint 10 according to the first embodiment, the tapered portion (piping member side) 110T and the tapered portion (tightening member side ) 120T, by rotating the piping member 110 and the clamping member 120 to the locking position, the piping member 110 and the clamping member 120 can be gradually moved closer to each other in the direction of the tube axis O. It can be moved.
As a result, the piping member 110 and the socket member 140 can be brought into contact without requiring a large force.

Further, according to the bayonet type joint 10 according to the first embodiment, the piping member 110 has a water cutoff recess (water cutoff portion) 112U in which the end face water cutoff member 150 is disposed between the piping member 110 and the socket member 140. Therefore, the drain flowing between the piping member 110 and the socket member 140 can be reliably stopped.

Moreover, according to the bayonet type joint 10 according to the first embodiment, the parting line along the pipe axis O direction of the piping member 110 is formed so as to pass through the area other than the water stop recess (water stop part) 112U. Therefore, it is possible to prevent dents and scratches from forming on the water stop member due to the parting line, which could lead to drain leakage.
As a result, water can be reliably stopped by the water stop member.

<Second embodiment>
A second embodiment of the present invention will be described below with reference to FIG.
FIG. 6 is a longitudinal sectional view illustrating a schematic configuration of a bayonet type joint according to a second embodiment of the present invention.
In FIG. 6, reference numeral 20 indicates a bayonet type joint (connection joint), reference number 200 indicates a bayonet type connecting member, reference number 210 indicates an elbow type piping member (piping member), reference number 120 indicates a tightening member, and reference number 140 indicates a receiving member. In the mouth member, reference numeral 150 indicates an end face water stop member.

As shown in FIG. 6, the bayonet type joint (connection joint) 20 includes, for example, a bayonet type connecting member 200, a socket member 140, and an end face water stop member 150.

The bayonet type connecting member 200 includes, for example, an elbow type piping member (piping member) 210 and a tightening member 120.
Moreover, in this embodiment, the bayonet type connecting member 200 is equipped with a locking mechanism (not shown).
Note that the tightening member 120, the socket member 140, and the end face water stop member 150 are the same as those in the first embodiment, so the reference numeral ``〃'' will be given to them and their explanation will be omitted.

The elbow-shaped piping member (piping member) 210, as shown in FIG. A protruding piece portion 214 is provided.
Further, in this embodiment, the elbow-shaped piping member 210 is made of transparent polypropylene resin.
Note that the material forming the elbow-shaped piping member can be arbitrarily set, including whether it is transparent or not, and resins other than polypropylene resin may be used as the material. Furthermore, it is preferable that the material forming the piping member 110 has high chemical resistance (for example, condensed ethanol, etc.).

The elbow-shaped tube body (tube body) 211 is, for example, formed in an elbow shape curved at 90° in side view, and has a through hole 210H formed inwardly along the tube axis O direction.
One end side F of the through hole 210H is arranged coaxially with the circular hole 140H of the socket member 140 when the bayonet type joint (connection joint) 10 is assembled, and cooperates with the circular hole 140H of the socket member 140. It is configured to function so as to form a flow path through which drain flows.

Further, the elbow-shaped tube body (tube body) 211 has a through hole 210H formed inwardly along the tube axis O direction.
Further, the elbow-shaped tube body (tubular body) 211 includes, for example, an enlarged diameter portion 212 whose outer circumferential surface is tapered in diameter from the middle in the direction of the tube axis O toward the one end side F.

In this embodiment, the protruding pieces 214 are arranged on the outer circumferential surface of the enlarged diameter portion 212 at equal intervals in the circumferential direction, and are constituted by substantially arc-shaped flat plates extending radially outward. ing.
Further, in this embodiment, for example, three protruding pieces 214 are formed.

In addition, in this embodiment, the other end side R of the projecting piece portion 214 has a tapered portion ( A locking flat portion (piping member side) (not shown) and a locking flat portion (piping member side) (not shown) are formed.

The configurations of the tapered portion (on the piping member side) and the locking flat portion (on the piping member side) are the same as those in the first embodiment, so their explanations will be omitted.

In addition, the elbow-shaped piping member (piping member) 210 has, for example, an annular water-stopping recess ( A water stop portion) 212U is formed.
Further, the water-stop recess (water-stop portion) 212U has a bottom surface as a water-stop surface 213, and is configured to stop water on the end surface by the end-face water-stop member 150.

Furthermore, in this embodiment, the water-stop recess (water-stop portion) 212U is designed to prevent water-stop performance from being degraded by a parting line formed when molding the elbow-shaped piping member (piping member) 210. It is configured.
For example, when a parting line is arranged in the water stop recess (water stop part) 212U, the parting line may be removed.
In addition, when a parting line is formed along the direction of the pipe axis O of the elbow-type piping member (piping member) 210, the parting line should pass through an area other than the water stop recess (water stop part) 212U. is formed.

Specifically, in the molding die for molding the elbow-type piping member (piping member) 210, a portion corresponding to the water-stop recess (water-stop portion) 212U in which the end-face water-stop member 150 is disposed is, for example, a portion of the core. It is configured to be formed by the end face and the molding surface of the main mold, and is set so that, for example, the dividing surface between the main molds and the boundary between the main mold and the core are not arranged.

In addition, by forming the parting line in the circumferential direction of the water stop recess (water stop part) 212U instead of in the direction of the pipe axis O, leakage of drain through the water stop recess (water stop part) 212U is prevented. It may be configured to suppress this.
The rest is the same as the first embodiment, so the same reference numerals are given and the explanation is omitted.

According to the bayonet type joint (connection joint) 10 according to the second embodiment, by rotating the elbow type piping member (piping member) 210 and the tightening member 120 in the tightening direction or in the opposite direction, the elbow type piping member ( The piping member) 210 and the tightening member 120 can be installed and removed.
As a result, the socket member 140 and the elbow-shaped piping member (piping member) 210 can be easily and efficiently attached and detached with one touch without using any tools.

Note that the present invention is not limited to the embodiments described above, and various changes can be made without departing from the spirit of the invention.

For example, in the above embodiment, a case has been described in which a tapered portion (piping member side) 110T is formed on the protrusion portion 114, and a tapered portion (tightening member side) 120T is formed at the locking position 124. Whether or not to form such tapered portions 110T and 120T can be set arbitrarily, and a configuration in which the tapered portions 110T and 120T are not formed may be used.

In addition, in the above embodiment, a case has been described in which the end face water stop member 150 is arranged between the piping member 110, the elbow type piping member (piping member) 210, and the socket member 140, but the piping member 110, the elbow type Whether or not the end face water stop member 150 is disposed between the piping member (piping member) 210 and the socket member 140 can be arbitrarily set, and a configuration may be adopted in which the end face water stop member 150 is not disposed.

Further, in the above embodiment, the water stop recess 112U is formed in the piping member 110, the water stop recess 212U is formed in the elbow type piping member (piping member) 210, and the water stop surface 144R is formed on the end surface of the socket member 140. Although we have described the case where the water stop recess 112U, the water stop recess 212U, and the water stop surface 144R are formed, it is possible to arbitrarily set the form of the water stop portion. It is also possible to adopt a configuration in which the water recess 212U and the water stop surface 144R are not formed.

Further, in the above embodiment, a case has been described in which the water stop member is the end face water stop member 150 that stops water on the end face, but it is possible to apply various forms of the water stop member, for example, Instead of the end face water stop member 150, between the outer circumferential surface of the socket member 140 and the inner circumferential surface of the pipe body 111 of the piping member 110 or the elbow-shaped pipe body 211, or between the inner circumferential surface of the socket member 140 and the piping member 110. A circumferential water stop member (for example, an O-ring, etc.) is disposed between the outer peripheral surface of the pipe body 111 of the elbow-type pipe body 211, and a water stop member (for example, an O-ring, etc.) is formed correspondingly between the socket member and the pipe body of the piping member. A diagonal water stop member or the like disposed between the inclined surfaces may also be used.

Further, in the above embodiment, a case has been described in which the parting line along the direction of the pipe axis O of the piping member is formed to pass through areas other than the water stop recesses 121U and 221U, but the water stop recesses A parting line along the tube axis O direction may be formed at 121U and 221U.
Further, the water may be removed to the extent that the water stop performance is not deteriorated, or a parting line may be formed if the water is small.

Further, in the above embodiment, the locking mechanism 100L is a flat surface consisting of a locking flat portion (piping member side) 110L connected to the tapered portion 110T of the piping member 110 and a locking flat portion (tightening member side) 120L. Although a case has been described in which the locking mechanism is configured as follows, the configuration of the locking mechanism can be arbitrarily set.
For example, the locking mechanism may be configured by a convex portion and a concave portion formed at the tightening end portions of the tapered portion 110T and the tapered portion 120T, or the locking flat portion (piping member side) 110L, the locking flat portion (Tightening member side) 120L and a convex portion or a concave portion may be combined to form a locking mechanism.

Further, in the above embodiment, the bayonet type joints (connection joints) 10 and 20 have been described with the socket member 140 disposed on the air conditioner side, but for example, the piping member 110 and the elbow type piping member 210 It may also be configured to be placed on the air conditioner side.
Further, in this case, it is preferable that the piping member 110 and the elbow-shaped piping member 210 be formed of a material that can be bonded with an adhesive.

Further, in the above embodiment, a case has been described in which the protrusion locking portion 124 is constituted by a wall portion that protrudes radially inward with respect to the protrusion passage 126 formed in the bag-like cylindrical body 122. However, it is not essential that the protrusion locking portion 124 be formed on the bag-like cylinder 122; for example, the protrusion locking portion 124 may be extended from the bottom wall portion 121 toward the side where the seat surface 121R is located. It may be formed on an existing columnar wall.

In addition, the components in the embodiments described above may be replaced with known components as appropriate without departing from the spirit of the present invention, and the embodiments described above may be appropriately combined and applied.

10, 20 Bayonet type joint (connection joint)
100, 200 Bayonet type connecting member 100L Lock mechanism 110 Piping member 110T Taper part (piping member side)
110L Locking flat part (piping member side)
111 Pipe body 112U, 212U Water stop recess (water stop part)
114, 214 Projection piece 120 Tightening member 120T Taper part (tightening member side)
120L Locking flat part (tightening member side)
121 Bottom wall portion 121R Seat surface 124 Projection locking portion 126 Projection passage 127 Projection guide groove 140 Socket member 144F Seating surface 144R Water stop surface 144 Flange portion 150 End face water stop member (water stop member)
210 Elbow type piping member (piping member)
211 Elbow type tube body (tube body)

Claims (4)

a tubular body formed in a cylindrical shape and forming a flow path in cooperation with a socket member; a plurality of projecting pieces formed on an outer circumferential surface of a tube end of the tubular body and protruding radially outward; A piping member having
a bottom wall portion having a through hole in which the cylindrical portion of the socket member is disposed and a seating surface on which a flange portion formed on the cylindrical portion of the socket member is seated; a protruding piece engaging member formed at a position in the circumferential direction around the pipe axis corresponding to the protruding piece portion of the piping member, extending from the bottom wall portion toward the side where the seat surface is positioned, and engaging with the protruding piece portion; a tightening member having a stop portion and a protrusion passage formed between the protrusion locking portion and through which the protrusion portion can pass;
a locking mechanism that locks the piping member and the tightening member at a locking position in a circumferential direction around the pipe axis;
Equipped with
arranging the cylindrical portion of the socket member in the through hole and rotating the piping member and the tightening member to the locking position with the projecting piece portion positioned on the seat surface side; the piping member and the tightening member are attached, and the piping member and the socket member are connected ;
The piping member is formed with a water stop part in which a water stop member is disposed between the pipe member and the socket member,
A parting line along the pipe axis direction of the piping member is formed to pass through an area other than the water stop portion.
A pipe connecting member characterized by: The pipe connection member according to claim 1,
The opposing surfaces of the protruding piece locking part and the protruding piece part are provided with the piping member in the pipe axis direction of the piping member when the protruding piece part is rotated toward the locking position. A pipe connecting member, characterized in that a tapered portion is formed to bring the portion closer to the seat surface side. a tubular body formed in a cylindrical shape and forming a flow path in cooperation with a socket member; a plurality of projecting pieces formed on an outer circumferential surface of a tube end of the tubular body and protruding radially outward; A piping member having
a bottom wall portion having a through hole in which the cylindrical portion of the socket member is disposed and a seating surface on which a flange portion formed on the cylindrical portion of the socket member is seated; a protruding piece engaging member formed at a position in the circumferential direction around the pipe axis corresponding to the protruding piece portion of the piping member, extending from the bottom wall portion toward the side where the seat surface is positioned, and engaging with the protruding piece portion; a tightening member having a stop portion and a protrusion passage formed between the protrusion locking portion and through which the protrusion portion can pass;
a locking mechanism that locks the piping member and the tightening member at a locking position in a circumferential direction around the pipe axis;
Equipped with
arranging the cylindrical portion of the socket member in the through hole and rotating the piping member and the tightening member to the locking position with the projecting piece portion positioned on the seat surface side; the piping member and the tightening member are attached, and the piping member and the socket member are connected ;
The opposing surfaces of the protruding piece locking part and the protruding piece part are provided with the piping member in the pipe axis direction of the piping member when the protruding piece part is rotated toward the locking position. A tapered portion is formed that brings the portion closer to the seat surface side,
In the piping member, a water stop part is formed in the pipe body and an end face water stop member is disposed between the pipe body and the socket member,
A parting line along the pipe axis direction of the piping member is formed to pass through an area other than the water stop portion.
A pipe connecting member characterized by: A pipe connecting member according to any one of claims 1 to 3 ,
the socket member;
A connection joint characterized by comprising:

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