Pipe joint

Abstract

To provide a pipe joint which can easily change a pipe-joint connection direction.SOLUTION: A pipe joint 8 (9) has connection ports 8a, 8b (9a, 9b) for connection with a pipe body at both ends. The pipe joint 8 (9) comprises a first connection body 801 (901) and a second connection body 802 (902) which are formed into cylindrical shapes. At mutual connection sides of the first connection body 801 (901) and the second connection body 802 (902), a male screw part 8c (9i) is formed at an external peripheral face of the one-side connection body 801 (902), a connection nut 8d (9j) is idly attached around an external periphery of the other side connection body 802 (901), and the connection bodies are connected to each other by the screwing of the male screw part 8c (9i) and the connection nut 8d (9j). A saw-shaped irregularity 8e (9k) is formed at an end face of the connection nut 8d (9j) along a circumferential direction, and an engagement part 8f (9m) engaged with the irregularity 8e (9k) is arranged at the one-side connection body 801 (902).SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a pipe joint. [Background technology]

[0002] Conventionally, there has been a drain hose joint that connects a drain outlet of an air conditioner to an end of a drain pipe located above the drain outlet (for example, see Patent Document 1). This drain hose joint is composed of a hose and L-shaped connecting members attached to the openings at both ends of the hose. Here, of the two connecting members, a straight connecting member has sometimes been used for the connecting member on the drain pipe side instead of the L-shaped connecting member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-106604 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a pipe joint in which the connection direction can be easily changed. [Means for solving the problem]

[0005] In order to achieve the above object, the pipe joint according to the present invention has the following configuration. The pipe joint according to the invention of claim 1 has connection ports for connecting to pipes at both ends. The pipe joint includes a first connecting body and a second connecting body, each of which is cylindrical and has the connection port at one end. The first connecting body and the second connecting body are connected to each other such that a male thread is formed on the outer circumferential surface of one of the connecting bodies, and a connecting nut is attached to the other connecting body around its outer periphery so as to be rotatable around the outer periphery, and the first connecting body and the second connecting body are connected to each other by screwing the male thread and the connecting nut together. The connecting nut has an end surface facing the one connecting body formed with projections and recesses along the circumferential direction, and the one connecting body is provided with an engaging portion that engages with the projections and recesses when the connecting nut is screwed into the male thread, and the projections and recesses are formed in a sawtooth shape so that the engaging portion that engages with the projections and recesses prevents the connecting nut from rotating in the loosening direction.

[0006] This pipe joint includes a first connecting body and a second connecting body, and these connecting bodies are connected by screwing a connecting nut, which is attached to one of the connecting bodies so as to be rotatable freely, onto a male thread formed on the connecting body on the other side. When screwing the connecting nut onto the male thread, the first connecting body and the second connecting body can be rotated relatively about the axis of their connecting sides, thereby making it possible to change the relative orientation of both connection ports, and thus the connection direction of this pipe joint can be easily changed. Effect of the Invention

[0007] The pipe joint according to the present invention has the following advantages.

[0008] According to the pipe joint described in claim 1, the first connecting body and the second connecting body can be rotated relatively around the axis of their connecting sides, making it possible to change the relative orientation of the two connection ports, thereby making it possible to easily change the connection direction of this pipe joint. [Brief description of the drawings]

[0009] [Figure 1]FIG. 1 is a perspective view of a drainage structure including a drainage path component member according to an embodiment of the present invention, in which a second joint is in a parallel position. [Diagram 2] FIG. 11 is a front view of the same showing the second joint in a parallel position. [Diagram 3] FIG. 11 is a front view of the second joint in a bent position (specifically, in an orthogonal position). [Figure 4] 3 is a front view of the drainage structure shown in FIG. 2 with the first and second cover members and the cover member for the curved flow-path forming member removed. FIG. [Diagram 5] 4 is a front view of the drainage structure shown in FIG. 3 with the first and second cover members and the cover member for the curved flow-path forming member removed. FIG. [Figure 6] FIG. 11 is a cross-sectional view of the drainage path forming member when the second joint is in a parallel position and the first and second cover members and the cover member for the curved flow path forming member are removed. [Figure 7] FIG. 13 is a cross-sectional view of the drainage path forming member with the second joint in a bent position (specifically, in an orthogonal position) and with the first and second cover members and the cover member for the bent flow path forming member removed. [Figure 8] FIG. 11 is a front view of the same with a first covering member attached to a first joint and the first covering member cut away. [Figure 9] 9 is a cross-sectional view taken along line AA in FIG. 8. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] 10A and 10B are perspective views of a first connecting nut, in which FIG. 10A is a perspective view seen from the front side, and FIG. [Figure 15] FIG. 11 is a perspective view of one of the divided bodies of the first covering member. [Figure 16]FIG. 11 is a perspective view of the other divided body of the first covering member. [Figure 17] FIG. 13 is a front view of the second cover member assembled to the second joint in the parallel position, with the second cover member cut away. [Figure 18] FIG. 13 is a front view of the second joint in the bent position (specifically, the orthogonal position) to which a second covering member is attached, with the second covering member cut away. [Figure 19] FIG. 11 is a cross-sectional view of the second joint in a parallel position. [Figure 20] FIG. 11 is a cross-sectional view of the second joint in a bent position (specifically, an orthogonal position). [Figure 21] FIG. 11 is a front view of the second main body side member. [Figure 22] FIG. [Diagram 23] FIG. [Figure 24] 10A and 10B are perspective views of a second connecting nut, in which FIG. 10A is a perspective view seen from the front side, and FIG. [Diagram 25] FIG. 11 is a perspective view of one of the divided bodies in the covering member for the second body side member of the second covering member. [Figure 26] FIG. 11 is a perspective view of the other divided body of the second covering member for the second body side member of the second covering member. [Figure 27] FIG. 11 is a perspective view of one of the divided bodies of the covering member for a drain pipe side member of the second covering member. [Figure 28] FIG. 11 is a perspective view of the other divided body of the covering member for a drain pipe side member of the second covering member. [Figure 29] FIG. 11 is a cross-sectional view of the curved flow-path forming member to which a cover member for the curved flow-path forming member is attached. [Diagram 30] FIG. 11 is a perspective view of the curved flow-path forming member in which an assembly portion is provided on a main body portion. [Diagram 31] FIG. 11 is a plan view of the curved flow-path forming member in which an assembly portion is provided on a main body portion. [Diagram 32]FIG. 11 is a perspective view of a connector in the curved flow path forming member. [Diagram 33] FIG. 11 is a perspective view of a cover of the curved flow-path forming member. [Diagram 34] 10A and 10B are perspective views of a mounting body in a curved flow-path forming member, in which FIG. 10A is a perspective view seen from the front side, and FIG. [Diagram 35] FIG. 11 is a perspective view of a valve body in the curved flow path forming member. [Diagram 36] FIG. 11 is a perspective view of one of the divided bodies in the covering member for the curved flow-path forming member. [Figure 37] FIG. 11 is a perspective view of the other divided body of the covering member for the curved flow-path forming member. [Figure 38] FIG. 7 is a view equivalent to FIG. 6 showing another embodiment of the present invention. [Figure 39] This is also a diagram equivalent to FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] Figures 1 to 37 show one embodiment of the present invention. In the figures, reference numeral 1 denotes an air conditioner. 1a denotes a drain port of the air conditioner 1. 2 denotes a hanging bolt as a suspending device for suspending the air conditioner 1. 3 denotes a structure or other support. 4 denotes a drain pipe. 4a denotes a drain pipe end which is an end of the drain pipe 4. 5 denotes a drain path component. 6 denotes a drain structure.

[0012] The drainage path component 5 constitutes the drainage path between the drain outlet 1a of the air conditioner 1 and the drain pipe end 4a located above the drain outlet 1a. In other words, the air conditioner 1 is equipped with a pump that pumps the drainage water, and the drainage water is first lifted to the top of the drainage path by the pump and then falls.

[0013] The drainage path component 5 includes a cylindrical main body 7, the inside of which is a drainage flow path, a first joint 8, and a second joint 9. The first joint 8 has a drain outlet side connection port 8a connected to the drain outlet 1a, and a main body one end side connection port 8b to which one end of the main body 7 is connected, and is bent so that its axis is approximately L-shaped (in the illustrated embodiment, the direction 8x of the drain outlet side connection port 8a and the direction 8y of the main body one end side connection port 8b are perpendicular directions). The second joint 9 has a main body other end side connection port 9a to which the other end of the main body 7 is connected, and a drain pipe side connection port 9b to which the drain pipe end portion 4a is connected, and is formed so that it can be selectively changed between a parallel posture in which the direction 9x of the main body other end side connection port 9a and the direction 9y of the drain pipe side connection port 9b are parallel directions, and a bent posture in which the directions 9x and 9y intersect (in the illustrated embodiment, an orthogonal posture in which they are perpendicular directions). Therefore, the drainage path component 5 has one end side of the main body 7 connected to the main body one end side connection port 8b of the first joint 8, and the other end side of the main body 7 connected to the main body other end side connection port 9a of the second joint 9, so that the main body 7, the first joint 8 and the second joint 9 are integrated.

[0014] In detail, the main body 7 includes a first pipe 10, a second pipe 11, and a curved flow path forming member 12 that is disposed above the first joint 8 and connects the first pipe 10 and the second pipe 11. In more detail, the curved flow path forming member 12 constitutes an apex portion of a drainage path between the drain outlet 1a of the air conditioner 1 and the drain pipe end portion 4a that is disposed above the drain outlet 1a, and the inside of the curved flow path forming member 12a. The side of the first pipe 10 opposite the curved flow path forming member 12 constitutes one end side of the main body 7, and the side of the second pipe 11 opposite the curved flow path forming member 12 constitutes the other end side of the main body 7.

[0015] The first joint 8 is configured by separably connecting a cylindrical drain side member 801 having the drain side connection port 8a and a cylindrical first main body side member 802 having the main body one end side connection port 8b. Here, the first main body side member 802 has a straight axis. The drain side member 801 has a substantially L-shaped bent axis, and the drain side member 801 can be connected to the first main body side member 802 at any rotation position rotated around the axis of the first main body side member 802, and the rotation allows the direction 8x of the drain side connection port 8a to be oriented in any direction rotated around the axis of the first main body side member 802.

[0016] In addition, at the connecting sides of the drain side member 801 and the first main body side member 802 in the first joint 8, a first male thread portion 8c is formed on the outer peripheral surface of one of the members (in the illustrated embodiment, the drain side member 801), and a first connecting nut 8d is rotatably attached around the outer periphery of the other member (in the illustrated embodiment, the first main body side member 802), and the drain side member 801 and the first main body side member 802 are connected by screwing the first male thread portion 8c into the first connecting nut 8d. Here, a first unevenness 8e is formed along the circumferential direction on the end surface of the first connecting nut 8d facing the one side member (the drain side member 801) of the drain side member 801 and the first main body side member 802, and a first engagement portion 8f that engages with the first unevenness 8e when the first connecting nut 8d is screwed into the first male thread portion 8c is provided on the one side member (the drain side member 801) of the drain side member 801 and the first main body side member 802. Therefore, the first unevenness 8e is formed in a sawtooth shape (preferably, in each tooth portion forming the sawtooth unevenness, the engaged surface in the loosening direction is an upright surface or a steeply inclined surface, and the engaged surface in the opposite direction, the tightening direction, is a gently inclined surface) so that the first engagement portion 8f that engages with the first unevenness 8e prevents the first connecting nut 8d from rotating in the loosening direction.

[0017] In addition, the other member (first body side member 802) of the drain port side member 801 and the first body side member 802 is provided with a first restricting protrusion 8g that restricts the first connecting nut 8d from moving further toward the loosening side (i.e., moving toward the loosening side in the axial direction of the first male screw portion 8c) by abutting the first connecting nut 8d at a distance of within one lead after the first connecting nut 8d is loosened from the first male screw portion 8c and disengaged from the first male screw portion 8c. The first connecting nut 8d is provided with a first recess 8h through which the first restricting protrusion 8g can pass at a predetermined rotation position of the first connecting nut 8d. Note that one lead refers to the distance that one screw member advances in the axial direction of the screw when one screw member (in the illustrated embodiment, the first connecting nut 8d) is rotated once during screw engagement.

[0018] The second joint 9 has a positioning means 9c for positioning the parallel posture and the bent posture (orthogonal posture in the illustrated embodiment). The second joint 9 is configured by separably connecting a cylindrical second body side member 901 having the body other end side connection port 9a and a cylindrical drain pipe side member 902 having the drain pipe side connection port 9b. Here, the second body side member 901 and the drain pipe side member 902 are both formed with bent axes, and the second body side member 901 and the drain pipe side member 902 are connected at pivoted positions rotated relatively around the axis of their connecting sides, thereby forming the parallel posture and the bent posture (orthogonal posture). Therefore, in order to position the second main body side member 901 and the drain pipe side member 902 in the parallel posture and the bent posture (orthogonal posture), a protrusion 9d is provided on one of the second main body side member 901 and the drain pipe side member 902 (the drain pipe side member 902 in the illustrated embodiment), and a recess 9e that engages with the protrusion 9d is provided on the other member (the second main body side member 901 in the illustrated embodiment). That is, the positioning means 9c consists of the protrusion 9d and the recess 9e.

[0019] In addition, the second joint 9 has an outer tube portion 9f on one side (the drain pipe side member 902 in the illustrated embodiment) of the second body side member 901 and the drain pipe side member 902 at the connecting side of each other, and an inner tube portion 9g inserted into the outer tube portion 9f on the other side (the second body side member 901 in the illustrated embodiment). A ring-shaped water-stopping member 9h is fitted on the outer periphery of the inner tube portion 9g, and the water-stopping member 9h is in close contact with the inner periphery of the outer tube portion 9f. This water-stopping member 9h prevents the drain pipe side member 902 from moving toward the side that is detached from the second body side member 901 due to its own weight until the engagement between the protrusion 9d and the recessed portion 9e is released.

[0020] In addition, at the connecting sides of the second main body side member 901 and the drain pipe side member 902, a second male thread portion 9i is formed on the outer peripheral surface of one of the members (in the illustrated embodiment, the drain pipe side member 902), and a second connecting nut 9j is rotatably attached around the outer periphery of the other member (in the illustrated embodiment, the second main body side member 901), and the second main body side member 901 and the drain pipe side member 902 are connected by screwing the second male thread portion 9i into the second connecting nut 9j. Here, a second unevenness 9k is formed along the circumferential direction on the end surface of the second connecting nut 9j facing the one of the second main body side member 901 and the drain pipe side member 902 (the drain pipe side member 902), and the one of the second main body side member 901 and the drain pipe side member 902 (the drain pipe side member 902) is provided with a second engagement portion 9m that engages with the second unevenness 9k when the second connecting nut 9j is screwed into the second male thread portion 9i. Therefore, the second unevenness 9k is formed in a sawtooth shape (preferably, in each tooth portion forming the sawtooth unevenness, the engaged surface in the loosening direction is an upright surface or a steeply inclined surface, and the engaged surface in the opposite direction, the tightening direction, is a gently inclined surface) so that the second engagement portion 9m that engages with the second unevenness 9k prevents the second connecting nut 9j from rotating in the loosening direction.

[0021] In addition, the other member (second body side member 901) of the second body side member 901 and the drain pipe side member 902 is provided with a second restricting protrusion 9n that restricts further movement of the second connecting nut 9j toward the loosening side (i.e., movement toward the loosening side in the axial direction of the second male screw portion 9i) by abutting the second connecting nut 9j at a position within one lead toward the loosening side (i.e., movement toward the loosening side in the axial direction of the second male screw portion 9i) after the second connecting nut 9j is loosened from the second male screw portion 9i and released from the screwing of the second connecting nut 9j. The second connecting nut 9j is provided with a second recess 9p through which the second restricting protrusion 9n can pass at a predetermined rotation position of the second connecting nut 9j.

[0022] The curved flow path forming member 12 has a first pipe-side connection port 12b to which the first pipe 10 is connected and a second pipe-side connection port 12c to which the second pipe 11 is connected, and the inside of the curved drainage flow path 12a, which is a part of the drainage flow path, is formed. That is, the first pipe-side connection port 12b is connected to the first pipe-side connection port 12b so that the inside of the first pipe 10, which is connected to the drain outlet 1a (specifically, connected via the first joint 8), communicates with the curved drainage flow path 12a. The second pipe-side connection port 12c is connected to the second pipe 11, which is connected to the drain pipe end 4a (specifically, connected via the second joint 9), so that the inside of the second pipe 11 communicates with the curved drainage flow path 12a.

[0023] The curved flow-path forming member 12 is formed such that the angle 12x of the first pipe-side connection port 12b and the angle 12y of the second pipe-side connection port 12c are right angles or smaller (in the illustrated embodiment, right angles). In other words, the first pipe-side connection port 12b and the second pipe-side connection port 12c are provided such that the direction 12y of the second pipe-side connection port 12c faces horizontally or lower (in the illustrated embodiment, horizontally) with the direction 12x of the first pipe-side connection port 12b facing vertically downward.

[0024] The curved flow path forming member 12 includes a fixing portion 12e that can be fixed to the support 3 in addition to a curved flow path forming member main body 12d having the curved drainage flow path 12a, the first pipe body side connection port 12b, and the second pipe body side connection port 12c. Here, the fixing portion 12e includes a mounting body 12g that has a mounting portion 12f that is attached to the support 3 and is separate from the curved flow path forming member main body 12d, and an assembly portion 12h that is provided on the curved flow path forming member main body 12d and can be assembled to the mounting body 12g. In the illustrated embodiment, the fixing portion 12e is provided on the opposite side of the curved flow path forming member 12 from the second pipe body side connection port 12c. The fixing portion 12e can be fixed to a bolt member (in the illustrated embodiment, a hanging bolt 2 that hangs the air conditioner 1) that serves as the support 3 arranged near the air conditioner 1, and in the fixed state, the first pipe 10 is arranged to extend downward from the curved flow path forming member 12.

[0025] The curved flow-path forming member 12 further includes a lid 12i. The curved flow-path forming member main body 12d has an opening 12j through which the curved drainage flow path 12a can be viewed from the outside. The lid 12i is detachably attached to the curved flow-path forming member main body 12d so as to close the opening 12j.

[0026] A valve body 13 is provided inside the curved flow path forming member 12 (specifically, the curved flow path forming member main body 12d), and the valve body 13 normally closes the curved drainage flow path 12a and opens the curved drainage flow path 12a when wastewater from the first pipe body 10 flows in. The valve body 13 can be inserted and removed from the opening 12j. In detail, the curved flow path forming member 12 (specifically, the curved flow path forming member main body 12d) has a bottom plate 12k and a protruding tubular portion 12m that protrudes upward from the bottom plate 12k in a tubular shape, and the inside of the protruding tubular portion 12m is connected to an inlet portion 12n into which the wastewater from the first pipe body 10 flows in. Therefore, the valve body 13 is provided at the protruding end of the protruding tubular portion 12m.

[0027] The drainage path component 5 also includes a cover member that covers one of the first joint 8 and the second joint 9 so as to accommodate it therein. In the illustrated embodiment, each of the first joint 8 and the second joint 9 is one of the joints, and a first cover member 14 that covers the first joint 8 so as to accommodate it therein and a second cover member 15 that covers the second joint 9 so as to accommodate it therein are provided as cover members. Here, the first joint 8 has a first coupled portion 8i formed on its outer surface as a coupled portion, and the first covering member 14 has a first coupling portion 14a formed on its inner surface as a coupling portion that couples with the first coupled portion 8i, and the first coupling portion 8i and the first coupling portion 14a are coupled to each other, so that the first covering member 14 is temporarily held by the first joint 8 so as not to fall under its own weight. Similarly, the second joint 9 has a second joinable part 9q formed on its outer surface as a joinable part, and the second covering member 15 has a second joining part 15a formed on its inner surface as a joining part that joins with the second joinable part 9q, and by joining the second joinable part 9q and the second joining part 15a, the second covering member 15 is temporarily held at the second joint 9 so as not to fall under its own weight. In the illustrated embodiment, the first and second joinable parts 8i, 9q are made of convex parts, and the first and second joining parts 14a, 15a are made of concave parts that fit into the convex parts and are joined to the convex parts by friction.

[0028] In detail, the first covering member 14 has a cylindrical shape with an axis bent in a substantially L-shape, and covers the first joint 8 so as to accommodate it therein. The first covering member 14 has one or more (two in the illustrated embodiment) divided parts 14b extending along the axis direction, and by closing the divided parts 14b, it is possible to cover the first joint 8 so as to accommodate it therein.

[0029] Here, the first joint 8 has the first coupled portion 8i formed on the outer surface of the bent portion of the first joint 8, on the side (both sides in the illustrated embodiment) away from a cross section cut by a plane including the axis of the first joint 8. The first covering member 14 has the first coupled portion 14a formed on the inner surface of the bent portion of the first covering member 14, on the side (both sides in the illustrated embodiment) away from a cross section cut by a plane including the axis of the first covering member 14.

[0030] The second covering member 15 includes a cylindrical covering member 151 for the second main body side member with a bent axis that covers the second main body side member 901 so as to accommodate it therein, and a cylindrical covering member 152 for the drain pipe side member with a bent axis that covers the drain pipe side member 902 so as to accommodate it therein. The covering member 151 for the second main body side member and the covering member 152 for the drain pipe side member have one or more (two in the illustrated embodiment) division parts 15b extending along their axial directions, and by closing the division parts 15b, it is possible to cover the second main body side member 901 and the drain pipe side member 902 so as to accommodate them therein.

[0031] Here, the second joined portion 9q is formed on the outer surface of the bent portion of one of the second main body side member 901 and the drain pipe side member 902, on the side away from the cross section cut by a plane including the axis of the one of the members (both sides in the illustrated embodiment). The second joining portion 15a that joins with the second joined portion 9q is formed on the inner surface of the covering member that covers the one of the second main body side member covering member 151 and the drain pipe side member covering member 152 (more specifically, on the inner surface of the bent portion of the covering member, on the side away from the cross section cut by a plane including the axis of the covering member (both sides in the illustrated embodiment)), and the joining of the second joined portion 9q and the second joining portion 15a temporarily holds the covering member that covers the one of the members so that it does not fall by its own weight. In the illustrated embodiment, each of the second main body side member 901 and the drain pipe side member 902 is one of the members, a second connecting portion 9q is provided on both the second main body side member 901 and the drain pipe side member 902, and a second connecting portion 15a is provided on both the covering member 151 for the second main body side member and the covering member 152 for the drain pipe side member.

[0032] Further, the drainage path forming member 5 includes a cover member 16 for the curved flow-path forming member in addition to the first cover member 14 and the second cover member 15. Thus, the curved flow-path forming body 17 is configured by including the cover member 16 for the curved flow-path forming member in the curved flow-path forming member 12. That is, the curved flow-path forming body 17 includes the curved flow-path forming member 12 and the cover member 16 for the curved flow-path forming member that covers the curved flow-path forming member 12 so as to accommodate it therein. The cover member 16 for the curved flow-path forming member is divided into a main body cover part 16a that covers the curved flow-path forming member main body 12d and a cover body cover part 16b that covers the cover body 12i, and the cover body 12i can be removed from the curved flow-path forming member main body 12d by removing the cover body cover part 16b from the main body cover part 16a.

[0033] Furthermore, the curved flow-path forming member 12 includes the first pipe 10 and / or the second pipe 11 to form a curved flow-path forming device 18. That is, the curved flow-path forming device 18 includes the curved flow-path forming member 12, and the first pipe 10 connected to the first pipe-side connection port 12b of the curved flow-path forming member 12 and / or the second pipe 11 connected to the second pipe-side connection port 12c of the curved flow-path forming member 12. Here, the first pipe 10 is connected to the first pipe-side connection port 12b of the curved flow-path forming member 12 so as not to rotate around its axis, and similarly, the second pipe 11 is connected to the second pipe-side connection port 12c of the curved flow-path forming member 12 so as not to rotate around its axis.

[0034] The drainage device 19 is configured by including the first pipe 10 and the first joint 8 in the curved flow path forming member 12. That is, the drainage device 19 includes the curved flow path forming member 12, the first pipe 10 connected to the first pipe side connection port 12b of the curved flow path forming member 12, and the bent first joint 8 connecting the first pipe 10 to the drain port 1a of the air conditioner 1. Here, as described above, the first joint 8 is configured by connecting (more specifically, detachably connecting) a cylindrical drain port side member 801 having a drain port side connection port 8a connected to the drain port 1a, and a cylindrical pipe side member (i.e., a first main body side member 802) having a pipe side connection port (i.e., a main body one end side connection port 8b) to which the first pipe 10 is connected. The first pipe 10 is connected to the first pipe side connection port 12b of the curved flow path forming member 12 so as to be non-rotatable around its axis, and is also connected to the pipe side connection port (i.e., the main body one end side connection port 8b) of the first joint 8 (more specifically, the first main body side member 802) so as to be non-rotatable around its axis.

[0035] In the drainage structure 6, the fixing portion 12e of the curved flow-path forming member 12 is fixed to the support body 3, the first pipe body 10 is connected to the downwardly facing first pipe body side connection port 12b of the curved flow-path forming member 12, and the second pipe body 11 is connected to the sidewardly facing second pipe body side connection port 12c. In this drainage structure 6, the first pipe body 10 is connected to the drain outlet 1a of the air conditioner 1, and the second pipe body 11 is connected to the drain pipe end portion 4a located above the drain outlet 1a.

[0036] In addition, in this drainage structure 6, the first pipe body 10 and the drain outlet 1a are connected via a first joint 8. The first joint 8 is covered with a first cover member 14, and the first cover member 14 has a division portion 14b extending along its axial direction. Similarly, the second pipe body 11 and the drain pipe end portion 4a are connected via a second joint 9. The second joint 9 is covered with a second cover member 15 (i.e., the above-mentioned second body side member cover member 151 and drain pipe side member cover member 152), and the second cover member 15 has a division portion 15b extending along its axial direction. Therefore, a joining member 20 such as an adhesive tape is wrapped around each cover member (i.e., the first cover member 14 and the second cover member 15) to prevent the division portions 14b and 15b from opening.

[0037] In the drainage structure 6, the curved flow-path forming member 12 is covered with a cover member 16 for the curved flow-path forming member. As described above, the curved flow-path forming member 12 includes a curved flow-path forming member main body 12d having an opening 12j, and a lid body 12i for closing the opening 12j. Accordingly, the cover member 16 for the curved flow-path forming member is divided into a main body cover part 16a for covering the curved flow-path forming member main body 12d, and a lid body cover part 16b for covering the lid body 12i. Here, the main body cover part 16a includes two divided bodies 16c, 16c divided so as to sandwich the first pipe body side connection port 12b, the second pipe body side connection port 12c, and the fixing part 12e (in the illustrated embodiment, additionally so as to sandwich the opening 12j), and a joining member 20 such as an adhesive tape is wound around the main body cover part 16a so as to prevent the divided bodies 16c, 16c from being separated.

[0038] Incidentally, the first joint 8 is not limited to being used in the drainage path of the air conditioner 1, but can also be understood as a pipe joint having connection ports (drainage port side connection port 8a, main body one-end side connection port 8b) with pipe bodies (drainage port 1a, first pipe body 10) at both ends. Similarly, the second joint 9 can also be understood as a pipe joint having connection ports (main body other-end side connection port 9a, main body other-end side connection port 9b) with pipe bodies (second pipe body 11, drainage pipe 4) at both ends. Thus, this pipe joint (first joint 8 or second joint 9) includes a cylindrical first connecting body (drainage port side member 801 or second main body side member 901) having a connection port (main body one-end side connection port 8b or main body other-end side connection port 9a) at one end, and a cylindrical second connecting body (first main body side member 802 or drainage pipe side member 902) having a connection port (main body one-end side connection port 8b or drainage pipe side connection port 9b) at one end.

[0039] The first and second connecting bodies are connected to each other by a connecting body on one side (in the illustrated embodiment, the drain outlet side member 801 or the drain pipe side member 902) having a male thread portion (first male thread portion 8c or second male thread portion 9i) formed on its outer peripheral surface, and a connecting nut (first connecting nut 8d or second connecting nut 9j) is rotatably attached around the outer peripheral surface of the connecting body on the other side (in the illustrated embodiment, the first main body side member 802 or the second main body side member 901), and the first and second connecting bodies are connected to each other by screwing the male thread portion (first male thread portion 8c or second male thread portion 9i) and the connecting nut (first connecting nut 8d or second connecting nut 9j).

[0040] Here, the end face of the connecting nut (first connecting nut 8d or second connecting nut 9j) facing the connecting body on one side (drain outlet side member 801 or drain pipe side member 902) has unevenness (first unevenness 8e or second unevenness 9k) formed along the circumferential direction, and the connecting body on one side (drain outlet side member 801 or drain pipe side member 902) is provided with an engaging portion (first engaging portion 8f or second engaging portion 9m) that engages with the unevenness (first unevenness 8e or second unevenness 9k) when the connecting nut (first connecting nut 8d or second connecting nut 9j) is screwed into the male thread portion (first male thread portion 8c or second male thread portion 9i). Therefore, the unevenness (first unevenness 8e and second unevenness 9k) is formed in a sawtooth shape so that the engagement portion (first engagement portion 8f and second engagement portion 9m) that engages with the unevenness (first unevenness 8e and second unevenness 9k) prevents the connecting nut (first connecting nut 8d and second connecting nut 9j) from rotating in the loosening direction.

[0041] The other connecting body (the first main body side member 802 or the second main body side member 901) is provided with a regulating protrusion (first regulating protrusion 8g or second regulating protrusion 9n) which abuts against the connecting nut (first connecting nut 8d or second connecting nut 9j) after it is loosened from the male threaded portion (first male threaded portion 8c or second male threaded portion 9i) and disengages from the male threaded portion (first male threaded portion 8c or second male threaded portion 9i) by moving within one lead toward the loosening side (i.e., moving within one lead toward the loosening side in the axial direction of the male threaded portion), thereby regulating further movement of the connecting nut (first connecting nut 8d or second connecting nut 9j) toward the loosening side (i.e., movement toward the loosening side in the axial direction of the male threaded portion). Furthermore, the connecting nut (first connecting nut 8d or second connecting nut 9j) is provided with a recess (first recess 8h or second recess 9p) through which the regulating protrusion (first regulating protrusion 8g or second regulating protrusion 9n) can pass when the connecting nut (first connecting nut 8d or second connecting nut 9j) is in a predetermined rotational position.

[0042] As described above, the second joint 9 can be understood as a pipe joint having connection ports (main body other end side connection port 9a, drain pipe side connection port 9b) at both ends for connection to the pipe body (second pipe body 11, drain pipe 4), and the pipe joint device is made up of this pipe joint (second joint 9) and a covering member (second covering member 15) that covers the pipe joint (second joint 9) so as to accommodate it inside. In other words, the pipe joint device includes the pipe joint (second joint 9) and the covering member (second covering member 15). In detail, the pipe joint (second joint 9) comprises a cylindrical first connector (second body side member 901) having a connection port (main body other end side connection port 9a) at one end, and a cylindrical second connector (drain pipe side member 902) having a connection port (drain pipe side connection port 9b) at one end, and the other ends of the first connector (second body side member 901) and the second connector (drain pipe side member 902) are connected to each other. The first connector (second body side member 901) and the second connector (drain pipe side member 902) are both formed with a bent axis, and the first connector (second body side member 901) and the second connector (drain pipe side member 902) are connected at a rotation position rotated relatively around the axis of their connection side, so that the relative orientation of both connectors (main body other end side connection port 9a and drain pipe side connection port 9b) can be changed.

[0043] On the other hand, the covering member (second covering member 15) consists of a cylindrical first covering body (covering member 151 for second body side member) with a bent axis that covers the first connecting body (second body side member 901) so as to accommodate it inside, and a cylindrical second covering body (covering member 152 for drain pipe side member) with a bent axis that covers the second connecting body (drain pipe side member 902) so as to accommodate it inside, and each covering body has one or more dividing parts (dividing parts 15b) extending along its axial direction, and by closing the dividing parts (dividing parts 15b), it is possible to cover the first connecting body (second body side member 901) and the second connecting body (drain pipe side member 902) so as to accommodate them inside.

[0044] Here, one of the connecting bodies (in the illustrated embodiment, each connecting body) between the first connecting body (second main body side member 901) and the second connecting body (drain pipe side member 902) has a connecting portion (second connecting portion 9q) formed on its outer surface. Furthermore, in the first covering body (covering member 151 for second main body side member) and the second covering body (covering member 152 for drain pipe side member), the covering member (covering member 151 for second main body side member, covering member 152 for drain pipe side member) covering one of the connecting bodies (second main body side member 901, drain pipe side member 902) has a connecting portion (second connecting portion 15a) that connects to the connecting portion (second connecting portion 9q) formed on its inner surface, and by connecting the connecting portion (second connecting portion 9q) to the connecting portion (second connecting portion 15a), the covering body (covering member 151 for second main body side member, covering member 152 for drain pipe side member) covering the one of the connecting bodies (second main body side member 901, drain pipe side member 902) is temporarily held to the one of the connecting bodies (second main body side member 901, drain pipe side member 902) so that it does not fall due to its own weight.

[0045] Specifically, the first pipe 10 is composed of a pipe body 10a and a cylindrical covering material 10b that covers the pipe body 10a, and similarly, the second pipe 11 is composed of a pipe body 11a and a cylindrical covering material 11b that covers the pipe body 11a. Here, the pipe bodies 10a, 11a are made of, for example, synthetic resin, and the covering materials 10b, 11b are made of a heat insulating material. At least the second pipe 11 is flexible. In the illustrated embodiment, the first pipe 10 and the second pipe 11 are flexible, and the second pipe 11 is formed to have a shorter axial length than the first pipe 10.

[0046] As described above, the first joint 8 is connected between the drain port side member 801 and the first main body side member 802 via the first connecting nut 8d. In detail, a U-shaped retaining ring 8j (having the same shape as a retaining ring 9r described later) is attached to the outer periphery of the first main body side member 802. The first connecting nut 8d is a cap nut for use in water, and the first connecting nut 8d is prevented from coming off the outer periphery of the first main body side member 802 by the retaining ring 8j and is fastened to the first male thread portion 8c. At this time, the tip portion of the first main body side member 802 is inserted into the drain port side member 801, and the ring-shaped water-stopping member 8k fitted to the outer periphery of the inserted tip portion is in close contact with the inner periphery of the drain port side member 801.

[0047] In addition, in the first joint 8, the drain port side connection port 8a has a large diameter portion 8m and a small diameter portion 8n to correspond to the different diameters of the drain port 1a. In the illustrated embodiment, the diameter of the drain port 1a is large, and the drain port 1a fits into the large diameter portion 8m of the drain port side connection port 8a. The main body one end side connection port 8b is composed of an inner tubular portion 8p, an intermediate tubular portion 8q, and an outer tubular portion 8r, which are arranged concentrically. The pipe main body 10a of the first pipe body 10 is inserted between the inner tubular portion 8p and the intermediate tubular portion 8q, and the covering material 10b of the first pipe body 10 is inserted between the intermediate tubular portion 8q and the outer tubular portion 8r, and is fixed to the main body one end side connection port 8b by, for example, gluing.

[0048] As described above, the second joint 9 is connected between the second body side member 901 and the drain pipe side member 902 via the second connecting nut 9j. In detail, a U-shaped retaining ring 9r is attached to the outer periphery of the second body side member 901. The second connecting nut 9j is a cap nut for use in plumbing, and the second connecting nut 9j is prevented from coming off the outer periphery of the second body side member 901 by the retaining ring 9r and is fastened to the second male threaded portion 9i. At this time, the tip portion of the second body side member 901 (i.e., the aforementioned inner tube portion 9g) is inserted into the drain pipe side member 902 (more specifically, the aforementioned outer tube portion 9f), and the ring-shaped water-stopping member 9h fitted to the outer periphery of the inserted tip portion is in close contact with the inner periphery of the drain pipe side member 902 (more specifically, the aforementioned outer tube portion 9f).

[0049] As described above, the second main body side member 901 and the drain pipe side member 902 are both formed with a bent axis, but in the illustrated embodiment, this bend is 45° from a straight state. Therefore, by positioning the second main body side member 901 and the drain pipe side member 902 with their axes on the same plane and connecting them at a rotational position rotated 180° relative to the axis of their connecting side, the above-mentioned parallel posture and perpendicular posture are formed.

[0050] As for the above-mentioned protrusion 9d and recess 9e in the second joint 9, the protrusion 9d is formed so as to protrude from the tip surface of the drain pipe side member 902 facing the second main body side member 901. And the recess 9e is formed so as to be recessed from the surface of the retaining ring 9r provided on the second main body side member 901 facing the drain pipe side member 902.

[0051] In addition, in the second joint 9, the other end connection port 9a of the main body is composed of an inner tubular portion 9s, an intermediate tubular portion 9t, and an outer tubular portion 9u, which are arranged concentrically. The pipe main body 11a of the second pipe body 11 is inserted between the inner tubular portion 9s and the intermediate tubular portion 9t, and the covering material 11b of the second pipe body 11 is inserted between the intermediate tubular portion 9t and the outer tubular portion 9u, and is fixed to the other end connection port 9a of the main body by, for example, gluing. The drain pipe side connection port 9b has a large diameter portion 9v and a small diameter portion 9w to correspond to different diameters of the drain pipe 4. In the illustrated embodiment, the diameter of the drain pipe 4 is large, and the drain pipe 4 (more specifically, the drain pipe end portion 4a) is fitted into the large diameter portion 9v of the drain pipe side connection port 9b.

[0052] The curved flow-path forming member 12 includes the curved flow-path forming member main body 12d, the fixing portion 12e, and the cover body 12i. The curved flow-path forming member main body 12d includes a cylindrical connector 12p having a second pipe-side connection port 12c as a separate body, and the connector 12p is connected to the main body portion 12q excluding the connector 12p via a connecting nut 12r (having the same shape as the first connecting nut 8d described above). In detail, the main body portion 12q includes a main body cylindrical portion 12s and an extension cylindrical portion 12t extending laterally from the main body cylindrical portion 12s, and a male screw portion 12u is formed on the outer circumferential surface of the extension cylindrical portion 12t. The connector 12p is fitted with a connecting nut 12r around its outer periphery so as to be rotatable, and the connector 12p is connected to the main body portion 12q by screwing the male screw portion 12u into the connecting nut 12r. More specifically, a U-shaped retaining ring 12v (same shape as the retaining ring 9r described above) is attached to the outer periphery of the connecting body 12p. The connecting nut 12r is a cap nut for use in water, and the connecting nut 12r is prevented from coming off the outer periphery of the connecting body 12p by the retaining ring 12v and is fastened to the male threaded portion 12u. At this time, the tip portion of the connecting body 12p is inserted into the extended cylindrical portion 12t, and a ring-shaped water-stopping member 12w fitted to the outer periphery of the inserted tip portion is in close contact with the inner periphery of the extended cylindrical portion 12t.

[0053] In addition, the first pipe-side connection port 12b is formed in the curved flow-path forming member main body 12d (specifically, the main body cylindrical portion 12s) so as to protrude downward from the bottom plate 12k. This first pipe-side connection port 12b is composed of an inner cylindrical portion 120a, an intermediate cylindrical portion 120b, and an outer cylindrical portion 120c, which are arranged concentrically. The pipe main body 10a of the first pipe 10 is inserted between the inner cylindrical portion 120a and the intermediate cylindrical portion 120b, and the covering material 10b of the first pipe 10 is inserted between the intermediate cylindrical portion 120b and the outer cylindrical portion 120c, and is fixed to this first pipe-side connection port 12b by, for example, adhesion or the like. The inside of the inner cylindrical portion 120a becomes the inflow portion 12n into which the wastewater from the first pipe 10 flows. Similarly, the second pipe-side connection port 12c is composed of an inner tubular portion 120d, a middle tubular portion 120e, and an outer tubular portion 120f, which are arranged concentrically. The pipe body 11a of the second pipe 11 is inserted between the inner tubular portion 120d and the middle tubular portion 120e, and the covering material 11b of the second pipe 11 is inserted between the middle tubular portion 120e and the outer tubular portion 120f, and fixed to the second pipe-side connection port 12c by, for example, gluing.

[0054] In addition, the protruding tubular portion 12m provided on the curved flow path forming member main body 12d (specifically, the main body tubular portion 12s) has a plurality of ribs 120g, 120g radially provided so as to connect the protruding end and the center, and a through hole 120h is opened in the center where the ribs 120g, 120g gather. Thus, the drainage passes between the ribs 120g, 120g and enters the inside. Then, the valve body 13 is attached to the through hole 120h. In detail, the valve body 13 is composed of a disk-shaped valve body 13a and an attachment protrusion 13b protruding from the center part of the valve body 13a. Thus, the valve body 13a is placed on the protruding end of the protruding tubular portion 12m, and the attachment protrusion 13b is inserted and locked into the through hole 120h.

[0055] The opening 12j of the curved flow-path forming member main body 12d (more specifically, the cylindrical main body portion 12s) is provided above the bottom plate 12k and opens upward. A lid body 12i for closing the opening 12j is attached so as to fit inside the curved flow-path forming member main body 12d (more specifically, the cylindrical main body portion 12s). The lid body 12i is positioned opposite the valve body 13. A ring-shaped water-stopping member 120i is fitted on the outer periphery of the lid body 12i, and the water-stopping member 120i is in close contact with the circumferential surface of the opening 12j.

[0056] As described above, the fixing portion 12e of the curved flow-path forming member 12 includes the mounting body 12g having the mounting portion 12f and the assembly portion 12h. In the mounting body 12g, the mounting portion 12f is composed of a receiving portion 120j that receives the support 3, and holding portions 120k, 120k that extend from the front surface of the receiving portion 120j and curve so as to hold the support 3. In addition to the mounting portion 12f, the mounting body 12g has an assembly receiving portion 120m that is formed by protruding from the rear surface of the receiving portion 120j. On the other hand, the assembly portion 12h has a leg portion 120n that protrudes laterally from the curved flow-path forming member main body 12d (more specifically, the main body cylindrical portion 12s) and an arm portion 120p that extends up and down from the tip of the leg portion 120n. The arm portion 120p has a mounting hole 120q. The mounting portion 12h is mounted to the mounting body 12g by inserting and locking the mounting portion 120m into the mounting hole 120q.

[0057] The first covering member 14 is made of a heat insulating material. The first covering member 14 has the aforementioned divisions 14b on the inner bending side and the outer bending side, and is provided with two divided bodies 14c, 14c divided by the divisions 14b, 14b. The first covering member 14 has the aforementioned first connecting portion 14a formed in each divided body 14c. The first covering member 14 also has a groove 14d that runs around each end, and the aforementioned joining member 20 is wound around the groove 14d.

[0058] The second covering member 15 is made of a heat insulating material. In this second covering member 15, the covering member 151 for the second main body side member and the covering member 152 for the drain pipe side member have the above-mentioned division parts 15b on the inner bending side and the outer bending side of the bent portion, and are provided with two divided bodies 15c, 15c divided by the division parts 15b, 15b. The second covering member 15 has the above-mentioned second joint part 15a formed in each divided body 15c in the covering member 151 for the second main body side member and the covering member 152 for the drain pipe side member. In addition, the covering member 151 for the second main body side member and the covering member 152 for the drain pipe side member have a groove 15d that runs around the end, and the above-mentioned joint member 20 is wound around the groove 15d.

[0059] The cover member 16 for the curved flow path forming member is made of a heat insulating material. As described above, the cover member 16 for the curved flow path forming member is divided into a main body cover part 16a and a lid cover part 16b, and the main body cover part 16a and the lid cover part 16b are assembled by fitting them together. The main body cover part 16a includes the above-mentioned divided bodies 16c, 16c, and the main body cover part 16a has a groove 16d that runs around the end of the main body cover part 16a that sandwiches the first pipe body side connection port 12b and the end of the main body cover part 16a that sandwiches the second pipe body side connection port 12c, and the above-mentioned joining member 20 is wound around the groove 16d.

[0060] Next, the effects of the drainage path component 5 and drainage structure 6, which are configured as described above, will be described. The drainage path component 5 constitutes a drainage path from the drain outlet 1a of the air conditioner 1 to the drain pipe end 4a located above the drain outlet 1a, and includes a cylindrical main body 7, a first joint 8 to which one end of the main body 7 is connected, and a second joint 9 to which the other end of the main body 7 is connected. Here, the first joint 8 is bent with its axis in a substantially L-shape (in the illustrated embodiment, the direction 8x of the drain outlet side connection port 8a connected to the drain outlet 1a and the direction 8y of the main body one end side connection port 8b to which one end of the main body 7 is connected are perpendicular directions). The second joint 9 can be selectively changed between a parallel position in which the orientation 9x of the main body other end side connection port 9a to which the other end side of the main body 7 is connected and the orientation 9y of the drain pipe side connection port 9b to which the drain pipe end 4a is connected are parallel to each other, and a bent position in which the orientations 9x, 9y intersect (in the illustrated embodiment, an orthogonal position in which they are perpendicular to each other). In this way, since the second joint 9 can be changed between the parallel position and the bent position (orthogonal position), the connection direction of the second joint 9 can be easily changed, and by selecting either the parallel position or the bent position (orthogonal position), it is possible to easily respond to the situation of the location where the drainage path component 5 is arranged.

[0061] The first joint 8 is configured by connecting a drain outlet side member 801 whose axis is formed in a substantially L-shape to a first main body side member 802 whose axis is formed in a straight line. The drain outlet side member 801 can be connected to the first main body side member 802 at any position rotated about the axis of the first main body side member 802. Therefore, by rotating the drain outlet side member 801 and changing the direction 8x of the drain outlet side connection port 8a in the drain outlet side member 801, the drain outlet side connection port 8a can be easily directed toward the drain outlet 1a of the air conditioner 1.

[0062] The second joint 9 is configured by connecting a second body side member 901 and a drain pipe side member 902, and the second body side member 901 and the drain pipe side member 902 are positioned in the parallel posture and the bent posture (orthogonal posture in the illustrated embodiment) by the engagement between the protrusion 9d and the recess 9e. A water stop member 9h is interposed between the second body side member 901 and the drain pipe side member 902, and the water stop member 9h prevents the drain pipe side member 902 from moving toward the side detached from the second body side member 901 due to its own weight until the engagement between the protrusion 9d and the recess 9e is released. In this way, by maintaining the engagement between the protrusion 9d and the recess 9e using the water-stopping member 9h, the parallel or bent posture (orthogonal posture) of the second joint 9 is maintained, making it easier to assemble the second joint 9 (assembly of the second main body side member 901 and the drain pipe side member 902, more specifically, assembly work including screwing the second connecting nut 9j into the second male threaded portion 9i).

[0063] The main body 7 includes a first pipe 10, a second pipe 11, and a curved flow path forming member 12 connecting the first pipe 10 and the second pipe 11. By providing an opening 12j and a cover 12i in the curved flow path forming member 12 located midway through the main body 7 (and thus midway through the drainage path), the internal curved drainage flow path 12a can be inspected.

[0064] A valve body 13 is provided inside the curved flow-path forming member 12, and the valve body 13 can be replaced by inserting and removing the valve body 13 from the opening 12j. Also, by providing the valve body 13 at the protruding end of the protruding tubular portion 12m protruding upward from the bottom plate 12k, impurities such as dust contained in the wastewater sink onto the bottom plate 12k, and therefore the impurities can be prevented from adhering to the valve body 13, and the movement of the valve body 13 can be maintained for a long time.

[0065] The curved flow path forming member 12 constitutes the apex of the drainage path, and has a first pipe side connection port 12b to which the first pipe 10 connected to the drain outlet 1a of the air conditioner 1 is connected, and a second pipe side connection port 12c to which the second pipe 11 connected to the drainage pipe end 4a located above the drain outlet 1a is connected. When the direction 12x of the first pipe side connection port 12b is a vertical downward direction, the direction 12y of the second pipe side connection port 12c faces the horizontal direction or lower than that (horizontal direction in the illustrated embodiment). By using the curved flow path forming member 12 at the apex of the drainage path, the direction of the second pipe 11 relative to the first pipe 10 can be changed, and bending of the pipe itself can be suppressed. The curved flow path forming member 12 also has a fixing portion 12e that can be fixed to the support 3, and the curved flow path forming member 12 itself is supported by fixing the fixing portion 12e to the support 3. In other words, by using a curved flow path forming member 12 at the apex portion of the drainage path, the bending of the pipe body itself can be suppressed, and by providing a fixing portion 12e on the curved flow path forming member 12, the curved flow path forming member 12, i.e., the apex portion of the drainage path, can be easily supported.

[0066] The fixing portion 12e is provided on the opposite side of the curved flow path forming member 12 from the second pipe body side connection port 12c. This prevents the support 3 from interfering with the arrangement of the second pipe body 11 connected to the second pipe body side connection port 12c, the drain pipe 4 connected to the second pipe body 11, etc.

[0067] The fixing portion 12e includes a mounting body 12g having a mounting portion 12f to be attached to the support body 3, and an assembly portion 12h provided on the curved flow-path forming member main body 12d and capable of being assembled to the mounting body 12g. As a result, when fixing the fixing portion 12e to the support body 3, the mounting portion 12f (mounting body 12g) can be attached to the support body 3 first, and then the assembly portion 12h provided on the curved flow-path forming member main body 12d can be assembled to the mounting body 12g. In particular, in the illustrated embodiment, the assembly portion 12h (specifically, the arm portion 120p) is pressed against the mounting body 12g (specifically, the assembled portion 120m), so that the assembled portion 120m enters the mounting hole 120q provided in the arm portion 120p and the assembly portion 12h is assembled to the mounting body 12g, making the assembly easy.

[0068] Moreover, the first tube 10 and the second tube 11 are flexible, and the second tube 11 is formed to have a shorter axial length than the first tube 10. By forming the second tube 11 to be short, the second tube 11 is less likely to corrugate.

[0069] Furthermore, the pipe joint (for example, the first joint 8 or the second joint 9) comprises a first connecting body (the drain outlet side member 801 or the second main body side member 901) and a second connecting body (the first main body side member 802 or the drain pipe side member 902), and these connecting bodies are connected by screwing a connecting nut (the first connecting nut 8d or the second connecting nut 9j) rotatably attached to the connecting body on the other side (in the illustrated embodiment, the first main body side member 802 or the second main body side member 901) onto a male threaded portion (the first male threaded portion 8c or the second male threaded portion 9i) formed on the connecting body on one side (in the illustrated embodiment, the drain outlet side member 801 or the drain pipe side member 902). Therefore, when screwing the connecting nut (first connecting nut 8d or second connecting nut 9j) onto the male threaded portion (first male threaded portion 8c or second male threaded portion 9i), the first connecting body and the second connecting body can be rotated relatively around the axis of their connecting sides, making it possible to change the relative orientation of the two connection ports (the drain outlet side connection port 8a and the main body one end side connection port 8b, or the main body other end side connection port 9a and the drain pipe side connection port 9b), thereby making it possible to easily change the connection direction of this pipe joint.

[0070] The other connecting body (the first main body member 802 or the second main body member 901) is provided with a restricting protrusion (the first restricting protrusion 8g or the second restricting protrusion 9n) that restricts the movement of the connecting nut (the first connecting nut 8d or the second connecting nut 9j) toward the loosening side, and the connecting nut (the first connecting nut 8d or the second connecting nut 9j) can be quickly screwed into the male thread (the first male thread 8c or the second male thread 9i) while avoiding unnecessary retraction of the connecting nut. The connecting nut (the first connecting nut 8d or the second connecting nut 9j) is provided with a recess (the first recess 8h or the second recess 9p) through which the restricting protrusion (the first restricting protrusion 8g or the second restricting protrusion 9n) can pass at a predetermined rotational position of the connecting nut, and the retaining ring (the retaining ring 8j or the retaining ring 9r) can be attached or detached by retracting the connecting nut so that the restricting protrusion passes through the recess. In addition, in the second connecting nut 9j, by retreating the connecting nut 9j so that the restricting protrusion 9n passes through the recess 9p, the positional relationship between the protrusion 9d and the recess 9e, which are the positioning means 9c, can be visually confirmed.

[0071] In addition, the pipe joint (for example, the second joint 9) has a first connecting body (second main body side member 901) and a second connecting body (drain pipe side member 902), and these connecting bodies are formed with bent axis centers, and by rotating these connecting bodies relatively around the axis centers of their connecting sides, the relative orientation of the two connection ports (connection port 9a on the other end of the main body and connection port 9b on the drain pipe side) can be changed, thereby making it possible to easily change the connection direction of this pipe joint.

[0072] The present invention is not limited to the above-mentioned embodiment, and various other modifications are possible. For example, in the drainage path component 5, the main body 7 does not have to include the first pipe 10, the second pipe 11, and the curved flow path forming member 12, and may be made of a single pipe 7a (more specifically, a flexible pipe) as shown in Figures 38 and 39.

[0073] Furthermore, the first pipe 10 connected to the first pipe side connection port 12b of the curved flow path forming member 12 is connected to the drain outlet 1a via the first joint 8, but may be connected directly without the first joint 8. Similarly, the second pipe 11 connected to the second pipe side connection port 12c of the curved flow path forming member 12 is connected to the drain pipe end 4a via the second joint 9, but may be connected directly without the second joint 9.

[0074] In addition, the fixing portion 12e comprises a mounting body 12g having a mounting portion 12f that is attached to the support 3, and an assembly portion 12h that can be assembled to the mounting body 12g, but the mounting body 12g may be provided directly on the curved flow path forming member main body 12d without comprising the assembly portion 12h.

[0075] Furthermore, instead of using the hanging bolts 2 for hanging the air conditioner 1, a dedicated bolt member (hanging bolt) for hanging the curved flow path forming member 12 may be used as the support member 3. Furthermore, the support member 3 is not limited to a bolt member, and may be a support member provided in the air conditioner 1 or another structure.

[0076] In addition, the first tube 10 and the second tube 11 are formed so that the second tube 11 has a shorter axial length than the first tube 10, but this is not limited to this and they may be the same length or the first tube 10 may be shorter.

[0077] In addition, the first joint 8 and the second joint 9 are covered by the first covering member 14 and the second covering member 15, but one or both of the first covering member 14 and the second covering member 15 may be omitted. Similarly, the curved flow-path forming member 12 is covered by a covering member 16 for the curved flow-path forming member, but this covering member 16 for the curved flow-path forming member may be omitted.

[0078] Also, the first joint 8 is provided with a first joined portion 8i, and the first covering member 14 is provided with a first connecting portion 14a, but these first joined portion 8i and first connecting portion 14a may be omitted. Similarly, the second joint 9 (the second body side member 901 and the drain pipe side member 902) is provided with a second joined portion 9q, and the second covering member 15 (the covering member 151 for the second body side member and the covering member 152 for the drain pipe side member) is provided with a second connecting portion 15a, but these second joined portion 9q and second connecting portion 15a may be omitted, and the second joined portion 9q and second connecting portion 15a may be provided only on either the second body side member 901 and the covering member 151 for the second body side member, or the drain pipe side member 902 and the covering member 152 for the drain pipe side member.

[0079] In addition, the first covering member 14 and the second covering member 15 have the joining member 20 wound around the grooves 14d and 15d, but the joining member 20 is not limited to the grooves 14d and 15d and may be wound around the entirety, for example. Similarly, in the covering member 16 for the curved flow-path forming member, the joining member 20 is not limited to the groove 16d and may be wound around the entirety, for example.

[0080] Incidentally, from the above-mentioned second joint 9 (pipe joint) and second covering member 15 (covering member), the invention relating to the pipe joint device described below can be grasped. <Additional Claims> A pipe joint device comprising a pipe joint having connection ports for connecting to a pipe body at both ends, and a cover member for covering the pipe joint so as to accommodate the pipe joint therein, The pipe joint includes a first connecting body and a second connecting body, each of which is tubular and has the connection port at one end, and the other ends of the first connecting body and the second connecting body are connected to each other, the first connecting body and the second connecting body are both formed with a bent axis, and the first connecting body and the second connecting body are connected at a rotational position rotated relatively around the axis of the connecting side, thereby making it possible to change the relative orientation of the connection port; the covering member is composed of a first covering body having a cylindrical shape with a bent axis and covering the first connecting body so as to accommodate it therein, and a second covering body having a cylindrical shape with a bent axis and covering the second connecting body so as to accommodate it therein, each covering body having one or more divided parts extending along its axial direction, and by closing the divided parts, it is possible to cover the first connecting body and the second connecting body so as to accommodate them therein; One of the first and second connecting bodies has a coupled portion formed on an outer surface thereof, A pipe joint device in which the first covering body and the second covering body, the covering body covering one of the connecting bodies, has a connecting portion formed on its inner surface that connects to the connectable portion, and by connecting the connectable portion to the connecting portion, the covering body covering one of the connecting bodies is temporarily held to the one of the connecting bodies so that it will not fall under its own weight. [Explanation of symbols]

[0081] 8. First joint (pipe joint) 801 Drain outlet side member (first connector) 802 First main body side member (second connecting body) 8a Drain side connection port (connection port) 8b Connection port on one end of main body (Connection port) 8c First male threaded part (male threaded part) 8d First connecting nut (connecting nut) 8e 1st unevenness (unevenness) 8f First engagement portion (engagement portion) 9 Second joint (pipe joint) 901 Second main body side member (first connecting body) 902 Drain pipe side member (second connector) 9a Connection port on the other end of the main body (Connection port) 9b Drain pipe connection port (connection port) 9i Second male thread part (male thread part) 9j Second connecting nut (connecting nut) 9k 2nd unevenness (unevenness) 9m 2nd engaging part (engaging part)

Claims

[Claim 1] A pipe joint having connection ports for connecting to pipes at both ends, a first connecting body and a second connecting body each having a cylindrical shape and the connecting port at one end; The first and second connecting bodies are connected to each other by a male screw portion formed on the outer circumferential surface of one of the connecting bodies, and a connecting nut is attached to the outer circumferential surface of the other connecting body so as to be rotatable therearound. The first and second connecting bodies are connected to each other by screwing the male screw portion into the connecting nut. A pipe fitting in which an end face of the connecting nut facing the connecting body on one side has projections and recesses formed along the circumferential direction, and the connecting body on one side has an engaging portion that engages with the projections and recesses when the connecting nut is screwed into the male threaded portion, and the projections and recesses are formed in a sawtooth shape so that the engaging portion that engages with the projections and recesses prevents the connecting nut from rotating in the loosening direction.

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