JP7797250B2 - Drain hose connector - Google Patents

Description

The present invention relates to a drain hose connector.

Water generated by the indoor units of air conditioners installed in common corridors, balconies, and other areas of apartment buildings and other multi-unit housing is discharged as drain water through a drain hose. If this drain water flows onto various floor surfaces, such as the base of the common corridors, balconies, or other structures, it can cause dirt, stains, and mold to form on the floor surfaces.

In response to this, a drainage method is known in which a drain rail is installed on the floor, a drain hose connector is provided on the drain rail, and a drain hose is connected to the drain hose connector, thereby directing drain water to a designated location such as a street gutter.

For example, Patent Document 1 discloses a drain hose connector that has a one-sided opening tubular portion with first and second insertion spaces into which a drain hose can be inserted and removed in the axial direction, and a main body portion that directs water from the drain hose toward the drainage treatment component.

Japanese Patent Application Laid-Open No. 2013-204607

In the drain hose connector in Patent Document 1, the tubular portion into which the drain hose is inserted is directly connected to the bottom surface, so the tip of the drain hose can come into contact with the bottom surface. In this case, if the tip of the drain hose comes into close contact with the bottom surface, drain water cannot flow out of the drain hose, making it difficult to discharge the drain water through the drain rail.

Recent air conditioners with automatic cleaning functions instantly discharge large amounts of water as drain water, creating a demand for drain hose connectors with excellent drainage performance.

The objective of the present invention is to provide a drain hose connector with excellent drainage performance.

The present invention relates to a drain hose connector that is installed on a drain rail and includes a main body having an upper surface, a front surface, a rear surface opposite the front surface, and an opening on the side opposite the upper surface; a through-hole on the upper surface through which a drain hose can be inserted; an outlet on the front surface; and a hose stopper that is located on the inner surface behind the through-hole, higher than the lower edge of the outlet, and that can come into contact with the rear end of the drain hose.

The drain hose connector of this invention has excellent drainage performance.

FIG. 2 is a perspective view of the drain hose connector according to the embodiment. FIG. 2 is a left side view of the drain hose connector according to the embodiment. FIG. 2 is a right side view of the drain hose connector according to the embodiment. 4 is a cross-sectional view of the drain hose according to the embodiment taken along line IV-IV in FIG. 2. FIG. FIG. 2 is a perspective view showing the drain hose connector according to the embodiment in use. 4 is a cross-sectional view taken along line IV-IV in FIG. 2 showing the drain hose connector according to the present embodiment in use.

The drain hose connector according to this embodiment will be described below with reference to the drawings. Hereinafter, the description will be made using a Cartesian coordinate system having mutually perpendicular X, Y, and Z axes. The direction parallel to the X axis will be referred to as the "X direction," the direction parallel to the Y axis as the "Y direction," and the direction parallel to the Z axis as the "Z direction." The X direction is the front-to-back direction, with the +X side being the "front" and the -X side being the "rear." The Y direction is the up-down direction, with the +Y side being the "upper" and the -Y side being the "lower." The Z direction is the left-to-right direction, with the +Z side being the "right side" and the -Z side being the "left side." In this specification, "substantially the same" does not necessarily mean a perfect match, but also includes cases where there are differences on the order of measurement or processing errors.

The drain hose connector 10 shown in Figure 1 is placed on a drain rail (not shown) installed on the floor of a common corridor or balcony in an apartment building. The drain hose connector 10 has a main body 20 having a top surface 12, a front surface 14, a rear surface 16 opposite the front surface 14, and a pair of side surfaces 18. The main body 20 has an upper portion 22 having the top surface 12, a front portion 24 having the front surface 14, a rear portion 26 having the rear surface 16, and a pair of side portions 28 each having a pair of side surfaces 18.

The main body 20 may be formed from a synthetic resin with excellent weather resistance. Examples of resins with excellent weather resistance include PMMA (methyl methacrylate) resin, AAS (acrylic-acrylonitrile-styrene) resin, AES (acrylonitrile-ethylene-propylene-rubber-styrene copolymer) resin, ASS (acrylonitrile-styrene-acrylic-rubber copolymer), MS (methyl methacrylate-styrene copolymer) resin, and polyvinyl chloride resin (PVC). AES resin or PVC resin is preferred due to its excellent weather resistance and compatibility with inorganic pigments.

The main body 20 has a through hole 30 on its top surface 12. The through hole 30 penetrates the upper portion 22 in the thickness direction, i.e., the vertical direction. The diameter of the through hole 30 is selected appropriately to match the drain hose to be inserted. The through hole 30 has a first through hole 32 and a second through hole 34 located forward of the first through hole 32. The first through hole 32 and the second through hole 34 are formed separated from each other in the front-to-rear direction, i.e., separate. The first through hole 32 and the second through hole 34 are separated by a predetermined distance, for example, a distance longer than the radius of the through hole 30 but shorter than its diameter. The top surface 12 of the main body 20 may be inclined upward toward the front. The main body 20 may have a mark on the top surface 12 indicating the forward direction. In the case of Figure 1, the main body 20 has an arrow 35 on its top surface 12 with its tip pointing forward.

As shown in FIG. 2, the main body 20 has a drain outlet 36 on the front surface 14. The drain outlet 36 penetrates the front portion 24 in the thickness direction, i.e., the front-to-rear direction, and is formed by cutting out a concave portion at the lower end of the front portion 24. The main body 20 has a pair of left and right legs 38. The pair of legs 38 have seats 40 at their lower ends that contact the surface of the drain rail. The lower end of the front portion 24 has an outline 41 that rises obliquely from the seats 40 toward the center in the left-to-right direction between the pair of legs 38 and is further connected horizontally. The area of the front portion 24 surrounded by the pair of legs 38 is the drain outlet 36. The pair of legs 38 extend rearward along the side surface 18 of the main body 20 (FIG. 1). The left-to-right length L3 of the seats 40 of the legs 38 is shorter than the width of the groove in the drain rail. The height of the upper edge of the drain outlet 36 is preferably equal to or greater than the height of the tip of the drain hose inserted into the first through-hole 32. By setting the upper edge of the outlet 36 at the above height, the drain hose connector 10 can more smoothly discharge drain water that has flowed in from the drain hose.

As shown in Figure 3, the lower end of the rear surface 16 of the main body 20 has a shape complementary to the surface of the drain rail. The lower end of the rear surface 16 shown in Figure 3 has an uneven shape. That is, the lower end of the rear surface 16 of the main body 20 has multiple protrusions 42 that protrude downward and multiple recesses 44 that are recessed upward and formed between the multiple protrusions 42. The height of the protrusions 42, i.e., the length from the bottom of the protrusions 42 to the top of the recesses 44, is approximately the same as the length of the ridges on the drain rail. While Figure 3 shows an example with two protrusions 42 and three recesses 44, the present invention is not limited to this and can be modified as appropriate to suit the surface of the drain rail.

As shown in FIG. 4 , the main body 20 has a relatively thick upper portion 22, while the front and rear portions 24 and 26 are thinner than the upper portion 22. The main body 20 has an internal space 46 connecting the first through hole 32, the second through hole 34, and the exhaust port 36. The main body 20 has an open lower end on the front side. The first through hole 32 and the second through hole 34 have cylindrical inner surfaces 48 and 50 along central axes L1 and L2, respectively. The lengths L5 and L6 of the rear inner surfaces 48 and 50 in the central axis direction of the first through hole 32 and the second through hole 34 are preferably 50% or more of their diameters. The central axes L1 and L2 of the first through hole 32 and the second through hole 34 may be parallel to each other, parallel to the vertical direction, or tilted relative to the vertical direction. The first through hole 32 and the second through hole 34 shown in FIG. 4 are tilted downward and forward.

The main body 20 has a first hose stop 52 serving as a hose stop at the lower end rearward of the first through hole 32. The first hose stop 52 is a protrusion provided on the inner surface rearward of the lower end of the first through hole 32 and protruding forward. The height of the first hose stop 52 is higher than the lower edge of the discharge port 36, i.e., the position 39 where the seat surfaces 40 of the pair of legs 38 intersect with the front surface 14. The rear end of the tip of the drain hose inserted into the first through hole 32 comes into contact with the first hose stop 52, thereby holding the rear end of the tip of the drain hose higher than the lower edge of the discharge port 36. The main body 20 has a first inlet 54 leading to the internal space 46 at the front, opposite the first hose stop 52 of the first through hole 32.

The first hose stopper 52 may have a first water guide surface 56 that protrudes forward from the inner surface 48 on the rear side of the first through hole 32. The first water guide surface 56 is formed integrally and continuously with the lower edge of the first through hole 32 in an area extending from the rear side to both the left and right, and its front side is connected to the first inlet 54. The first water guide surface 56 may be a flat surface that is parallel to the front-to-rear and left-to-right directions. The first water guide surface 56 shown in Figure 4 is an inclined surface that slopes downward toward the front.

The first water guide surface 56 may terminate inside the inner surface of the tip of the drain hose inserted into the first through hole 32. As shown in FIG. 4, the tip 56A of the first water guide surface 56 terminates between the center of the first through hole 32 and the inner surface of the tip of the drain hose inserted into the first through hole 32. Here, the inner surface of the tip of the drain hose is the inner surface of the end on the forward side of the tip.

The main body 20 has a bottom surface 58 on the side opposite the first water guide surface 56. The bottom surface 58 has a ridge 42A and a groove 44A that continue from the ridge 42 and the groove 44 at the lower end of the rear surface 16. The ridge 42A and the groove 44A extend in the front-to-rear direction across the entire bottom surface 58. That is, the ridge 42A and the groove 44A are provided in the range from the edge of the bottom surface 58 where the rear surface 16 of the main body 20 intersects with the bottom surface 58 to the tip 52A of the first hose stopper 52. The length of the bottom surface 58 in the front-to-rear direction is at least the length from the rear portion 24 to the central axis L1 of the first through-hole 32.

The main body 20 has a spacing portion 60 between the first through hole 32 and the second through hole 34. The upper end of the spacing portion 60 faces the upper surface 12 of the main body 20, and the lower end faces the internal space 46 of the main body 20. The thickness of the spacing portion 60 may be the same as the length L6 of the inner surface 50 on the rear side of the second through hole 34 in the direction of the central axis L2, or the length of the inner surface 48 on the front side of the first through hole 32 in the direction of the central axis L1.

The main body 20 has a second hose stop 62 serving as a hose stop at the lower end rearward of the second through hole 34. The second hose stop 62 is a protrusion provided on the inner surface rearward of the lower end of the second through hole 34 and protruding forward. The height of the second hose stop 62 is higher than the lower edge of the discharge port 36, i.e., the position 39 where the seat surfaces 40 of the pair of legs 38 intersect with the front surface 14. The second hose stop 62 is preferably provided at a higher position than the first hose stop 52. The rear end of the tip of the drain hose inserted into the second through hole 34 comes into contact with the second hose stop 62, thereby holding the rear end of the drain hose higher than the lower edge of the discharge port 36, and preferably higher than the tip of the drain hose inserted into the first through hole 32. The main body 20 has a second inlet 64 leading to the internal space 46, located forward of the second through hole 34 and opposite the second hose stop 62.

The second hose stopper 62 may have a second water guide surface 66 that protrudes forward from the inner surface 50 on the rear side of the second through hole 34. The second water guide surface 66 is formed integrally with the lower edge of the second through hole 34 in an area extending from the rear side to both the left and right, and its front side is connected to the second inlet 64. The second water guide surface 66 may be a surface that is parallel in the front-to-rear and left-to-right directions. The second water guide surface 66 shown in Figure 4 is an inclined surface that slopes downward toward the front.

The second water guide surface 66 may terminate inside the inner surface of the tip of the drain hose inserted into the second through hole 34. The front tip 66A of the second water guide surface 66 terminates rearward of the central axis L2 of the second through hole 34.

The internal space 46 of the main body 20 is defined by a spacing retainer 60 at the top, a pair of side sections 28 at the left and right, a rear section 26 at the rear, and a front section 24 at the front. The internal space 46 communicates with the first through-hole 32 via a first inlet 54 and with the second through-hole 34 via a second inlet 64. The main body 20 has an opening 68 at the lower end of the internal space 46, surrounded by the pair of side sections 28 and the tip of the first hose stopper 52. The internal space 46 communicates with the surface of the drain rail through the lower opening 68. The internal space 46 and opening 68 communicate with the outside via the discharge port 36.

The front portion 24 and rear portion 26 of the main body 20 may be parallel to the central axes L1, L2 of the first through hole 32 and the second through hole 34, or may be inclined relative to the central axes L1, L2. The front portion 24 and rear portion 26 of the main body 20 shown in Figure 4 are parallel to the central axes L1, L2 of the first through hole 32 and the second through hole 34, and are inclined downward and forward.

Next, the operation and effects of the drain hose connector 10 according to this embodiment will be described. As shown in FIG. 5, the drain hose connector 10 is installed on a drain rail 70. The drain rail 70 is joined to the surface of the flooring 74, with its longitudinal direction extending from the exterior wall 72 of the residence toward the leading edge of the flooring 74. If the flooring 74 is made of synthetic resin, the drain rail 70 is preferably joined to the surface of the flooring 74 by thermal welding. If the drain rail 70 is made of the same synthetic resin as the flooring 74, such as PVC resin, this is preferred because it provides excellent adhesion to the flooring 74. The flooring 74 has a water gradient of approximately 1/100 to 1/50 from the exterior wall 72 of the residence toward the leading edge. The drain rail 70 has multiple ridges 76 on its surface extending from the exterior wall 72 of the residence toward the leading edge. Multiple grooves 78 are formed between the ridges 76.

The drain hose connector 10 has its first through-hole 32 positioned on the exterior wall 72 side of the residence and its second through-hole 34 positioned on the front edge side, with its pair of legs 38 and ridges 42A each fitted into the grooves 78 of the drain rail 70. The ridges 76 of the drain rail 70 are fitted into the multiple grooves 44A of the drain hose connector 10. Therefore, as shown in FIG. 6 , the drain hose connector 10 is installed on the drain rail 70 with its bottom surface 58 and seat 38 in contact with the surface of the drain rail 70. The drain hose connector 10 may be bonded to the surface of the drain rail 70 with an adhesive. The adhesive may be applied to the seat 40 of the pair of legs 38 and to the bottom surface 58, including the ridges 42A and grooves 44A. The adhesive is not particularly limited as long as it can bond the drain hose connector 10 and the drain rail 70, but examples include epoxy adhesives, urethane adhesives, acrylic resin adhesives, polyvinyl acetate adhesives, urea resin adhesives, silicone adhesives, modified silicone adhesives, rubber adhesives, and cyanoacrylate adhesives. If a gap occurs between the drain hose connector 10 and the drain rail 70, a larger amount of adhesive can be applied to the bottom surface 58 of the drain hose connector 10 and used as a filler to fill the groove 44A.

The drain hose 80 is inserted into the first through-hole 32 of the drain hose connector 10, and the drain hose 81 is inserted into the second through-hole 34. The drain hoses 80, 81 preferably have adequate flexibility and are molded into a tubular shape from, for example, synthetic resin such as PVC resin or rubber. The drain hose 80 may also be made of metal.

As shown in FIG. 6 , the tip 80A of the drain hose 80 inserted into the first through hole 32 is inserted until the rear side of the tip 80A contacts the first hose stopper 52. The drain hose 80 is maintained in its position by the inner surface 48 of the first through hole 32. In other words, within the range inserted into the first through hole 32, the central axis of the drain hose 80 is maintained in approximately the same direction as the central axis L1 of the first through hole 32.

Similarly, the tip 81A of the drain hose 81 inserted into the second through hole 34 is inserted until the rear side of the tip 81A contacts the second hose stopper 62. The drain hose 81 is maintained in its position by the inner surface 50 of the second through hole 34. That is, within the range inserted into the second through hole 34, the central axis of the drain hose 81 is maintained in approximately the same direction as the central axis L2 of the second through hole 34. Hereinafter, when there is no need to distinguish between the drain hose 80 inserted into the first through hole 32 and the drain hose 81 inserted into the second through hole 34, they will be referred to as drain hose 80.

When only one drain hose 80 is connected to the drain hose connector 10, the drain hose 80 is inserted into one of the first through hole 32 and the second through hole 34, and the other through hole is preferably closed with a removable lid (not shown) to prevent dust, soil, and sand from entering the main body 20.

As described above, drain water flows into the drain hose connector 10 installed on the drain rail 70 through the drain hose 80. The drain water flowing out from the tip 80A of the drain hose 80 inserted into the first through-hole 32 comes into contact with the first water guide surface 56. The first water guide surface 56 is integrally formed with the lower edge of the first through-hole 32 in a region extending from the rear to both sides, so the drain water flows forward on the first water guide surface 56 toward the first inlet 54 at the front. The drain water that reaches the tip of the first water guide surface 56 flows into the internal space 46 through the first inlet 54. Because the internal space 46 has an opening 68 below that connects to the drain rail 70, the drain water that flows into the internal space 46 flows down onto the drain rail 70 while maintaining its forward momentum. The drain water flows along the drain rail 70 toward the discharge port 36.

Drain water flowing out from the tip 81A of the drain hose 81 inserted into the second through-hole 34 is directed forward by the second water guide surface 66 and flows into the internal space 46 through the second inlet 64. In the internal space 46, the drain water merges with the drain water flowing in from the first inlet 54 and is discharged to the outside of the main body 20 through the outlet 36. The drain water discharged from the drain hose connector 10 flows toward the front edge on the drain rail 70 due to the water gradient of the floor material 74, and is discharged into a groove (not shown) formed in the floor material 74.

The drain hose connector 10 of this embodiment holds the tips 80A, 81A of the drain hoses 80, 81 at a position higher than the lower edge of the outlet 36, forming a flow path. This allows drain water flowing out of the drain hoses 80, 81 to smoothly flow into the drain hose connector 10. Drain water that flows into the drain hose connector 10 moves onto the drain rail 70 through the opening 68, flows over the drain rail 70, and is discharged from the drain hose connector 10 through the outlet 36.

In other words, by having the first and second hose stoppers 52, 62 hold the rear ends 80A, 81A of the drain hoses 80, 81 at a position higher than the lower edge of the discharge port 36, even when the flow rate of drain water flowing through the drain hoses 80, 81 is high, the drain water flows smoothly from the drain hoses 80, 81 into the main body 20 and moves to the drain rail 70. Furthermore, when the flow rate of drain water is low, the drain water flows mainly into the main body 20 from the rear ends of the drain hoses 80, 81. Therefore, by having the rear ends of the drain hoses 80, 81 at a position higher than the lower edge of the discharge port 36, it is possible to prevent drain water from accumulating within the drain hoses 80, 81. Therefore, the drain hose connector 10 can more smoothly discharge drain water supplied from the drain hoses 80, 81, resulting in excellent drainage performance.

In this embodiment, the first and second hose stoppers 52, 62 have first and second water guide surfaces 56, 66 that protrude forward from the inner surface of the rear side of the through-hole 30. Drain water flowing out of the drain hose 80 contacts the first and second water guide surfaces 56, 66 and moves forward along them. That is, the drain hose connector 10 moves the drain water forward and then moves it through the opening 68 onto the drain rail 70. Therefore, by having the first and second hose stoppers 52, 62, respectively, and the first and second water guide surfaces 56, 66, even when the flow rate of drain water flowing through the drain hoses 80, 81 is high, the drain water is moved to a position farther away from the rear portion 26 and closer to the outlet 36 before falling onto the drain rail 70, thereby preventing drain water from leaking behind the rear portion 26. Therefore, the drain hose connector 10 has excellent drainage performance.

In the drain hose connector 10 according to this embodiment, when the first and second water guide surfaces 56, 66 are inclined downward toward the discharge outlet 36, drain water flowing in from the drain hoses 80, 81 moves more smoothly along the first and second water guide surfaces 56, 66 toward the discharge outlet 36 and onto the drain rail 70 through the opening 68. Therefore, even when the flow rate of drain water flowing through the drain hoses 80, 81 is high, the downward inclination of the first and second water guide surfaces 56, 66 toward the discharge outlet 36 further prevents drain water from leaking behind the rear section 26.

In the drain hose connector 10 according to this embodiment, the tips 56A, 66A of the first and second water guide surfaces 56, 66 terminate inside the inner surfaces of the tips 80A, 81A of the drain hoses 80, 81 inserted into the through-hole 30, preventing the tips 80A, 81A of the drain hoses 80, 81 inserted into the through-hole 30 from being blocked by the first and second water guide surfaces 56, 66.

Ideally, the tip of the drain hose should be cut so that it is perpendicular to the central axis of the drain hose, but this is not always the case. For example, if the hose is cut at an angle, when it is inserted into the through-hole, part of the tip may unintentionally coincide with the water-conducting surface, causing part of the tip to come into close contact with the water-conducting surface.

In the drain hose connector 10 according to this embodiment, the tips 56A, 66A of the first and second water guide surfaces 56, 66 terminate inside the inner surfaces of the tips of the drain hoses 80, 81 inserted into the through-holes 30. Therefore, even if portions of the tips 80A, 81A of the drain hoses 80, 81 coincide with the first and second water guide surfaces 56, 66, a flow path is more reliably formed between the inner surfaces of the tips 80A, 81A of the drain hoses 80, 81 and the tips 56A, 66A of the first and second water guide surfaces 56, 66. Drain water flowing out of this flow path flows directly into the internal space 46 without coming into contact with the first and second water guide surfaces 56, 66. Therefore, even when the flow rate of drain water flowing through the drain hose 80 is high, clogging of the drain hoses 80, 81 can be prevented, resulting in excellent drainage performance for the drain hose connector 10.

The through hole 30 in this embodiment has a first through hole 32 located on the rear side and a second through hole 34 located on the front side of the first through hole 32. The drain hose connector 10 can accommodate two drain hoses 80, 81, allowing for smoother discharge of drain water that has flowed through each of the drain hoses 80, 81.

In this embodiment, the tip 56A of the first water conducting surface 56 of the first through hole 32 terminates between the center of the first through hole 32 and the inner surface of the tip 80A of the drain hose 80 inserted into the first through hole 32. Drain water flowing out of the drain hose 80 contacts the first water conducting surface 56 and travels along the first water conducting surface 56 forward of the center of the first through hole 32, thereby conducting the drain water to a position further away from the rear portion 26 and closer to the discharge port 36. Because the first water conducting surface 56 terminates inside the inner surface of the tip 80A of the drain hose 80, the tip 80A of the drain hose 80 inserted into the first through hole 32 is prevented from being blocked by the first water conducting surface 56. Therefore, the drain hose connector 10 has excellent drainage performance.

In this embodiment, the second hose stopper 62 provided in the second through hole 34 is located at a higher position than the first hose stopper 52 provided in the first through hole 32. Because the second hose stopper 62 of the second through hole 34 is located at a higher, upper position relative to the first hose stopper 52, the drain hose 81 inserted into the second through hole 34 does not interfere with the flow of drain water flowing out from the drain hose 80 inserted into the first through hole 32. Therefore, the drain hose connector 10 can smoothly guide drain water from the internal space 46 to the outlet 36, providing excellent drainage performance.

When the upper edge of the drain outlet is higher than the tip of the drain hose 80 inserted into the first through-hole 32, the front portion 24 is prevented from interfering with drain water being discharged from the drain outlet 36 through the internal space 46. Therefore, the drain hose connector 10 can more smoothly discharge drain water that has flowed in from the drain hose 80.

The bottom surface 58 in this embodiment has an uneven shape complementary to the surface of the drain rail 70, and has ridges 42A and grooves 44A extending across the entire bottom surface 58, allowing the bottom surface 58 to fit tightly onto the drain rail 70 within a predetermined range in the front-to-rear direction. Drain water supplied from the internal space 46 to the surface of the drain rail 70 flows forward toward the outlet. Even if some of the drain water flows rearward, the bottom surface 58 is in tight contact with the surface of the drain rail 70 at least in the range from the rear portion 24 to the central axis L1 of the first through hole 32, preventing drain water from leaking rearward beyond the rear portion 26. Therefore, the drain hose connector 10 has excellent drainage performance because it can prevent drain water from leaking even when the flow rate of drain water flowing through the drain hose 80 is high.

The present invention is not limited to the above embodiments and can be modified as appropriate within the scope of the present invention.

For example, in the above embodiment, the drain hose connector 10 was described as having a first through hole 32 and a second through hole 34, but it may also have only the first through hole 32.

Although the upper surface 12 of the main body 20 has been described as being inclined upward toward the front, the present invention is not limited to this. The upper surface of the main body may be horizontal or may be inclined downward toward the front.

In the above embodiment, the central axes L1, L2 of the first through hole 32 and the second through hole 34 are described as being inclined downward and forward, but the present invention is not limited to this. The central axes of the first through hole and the second through hole may be parallel to the vertical direction, or may be inclined downward and rearward.

10 Drain hose connector 12 Upper surface 14 Front surface 16 Rear surface 20 Main body 30 Through hole 32 First through hole 34 Second through hole 36 Discharge port 42 Convex portion 42A Convex strip 44 Concave portion 44A Groove 46 Internal space 48 Inner surface 50 Inner surface 52 First hose stop portion 54 First inlet 56 First water guide surface 58 Bottom surface 62 Second hose stop portion 64 Second inlet 66 Second water guide surface 68 Opening 70 Drain rail 74 Floor material 76 Convex strip 78 Groove 80, 81 Drain hose 80A, 81A Tip

Claims (6)

A drain hose connector installed on a drain rail,
a body having a top surface, a front surface, a rear surface opposite the front surface, and an opening opposite the top surface;
a through hole provided on the upper surface, into which a drain hose can be inserted;
an outlet provided on the front surface;
a hose stopper provided at a rear of the inner surface of the through hole and at a position higher than a lower edge of the discharge port, the hose stopper being capable of contacting a rear end portion of the tip of the drain hose;
A drain hose connector comprising: The drain hose connector according to claim 1, wherein the hose stop portion has a water-conducting surface that protrudes forward from the rear inner surface of the through-hole. The drain hose connector according to claim 2, wherein the water conveying surface slopes downward toward the discharge outlet. A drain hose connector according to claim 2 or 3, wherein the tip of the water-conducting surface terminates inside the inner surface of the tip of the drain hose inserted into the through-hole. The through hole is
a first through hole disposed on the rear side;
a second through hole disposed forward of the first through hole,
The hose stop portion provided in the first through hole has a water guide surface protruding forward from the inner surface at the rear of the through hole,
a tip of the water guide surface terminates between the center of the through hole and the inner surface of the tip of the drain hose inserted into the through hole;
The hose stop portion provided in the second through hole is provided at a higher position than the hose stop portion provided in the first through hole.
The drain hose connector according to any one of claims 1 to 4. The hose stopper has a water guide surface that protrudes forward from the rear inner surface of the through hole, and a bottom surface that faces the drain rail on the opposite side of the water guide surface,
The drain hose connector according to any one of claims 1 to 5, wherein the bottom surface has a concave-convex shape that is complementary to the surface of the drain rail.