JP2021143723A - Terminal member for ventilation hole - Google Patents

Abstract

To provide a terminal member for a ventilation hole which enables reduction of the number of components while having a function equivalent to or higher than a conventional terminal member for a ventilation hole.SOLUTION: A sleeve cap 1 includes: an insertion cylinder 10 which is inserted into a ventilation port H formed on a wall surface W of a building; and a face 20 provided at one side end part of the insertion cylinder 10. Further, the sleeve cap 1 includes an annular water shut-off packing 30 along an outer peripheral edge 15 at the one side end part of the insertion cylinder 10. The water shut-off packing 30 has: a wall surface contact part 31 which elastically contacts with the wall surface W; and a face contact part 32 which elastically contacts with the face 20.SELECTED DRAWING: Figure 6

Description

The present invention relates to a ventilation port terminal member, and more particularly to a ventilation port terminal member attached to a ventilation port that opens on a wall surface of a building.

A through hole is formed in the wall of a general building through the inside and outside of the building to pass the piping of the air conditioning equipment. This through hole may not be used, and a ventilation port terminal member for preventing the intrusion of foreign matter such as wind and rain is attached to the ventilation port which is the opening end of such a through hole (as an example). See Patent Document 1).

Japanese Patent No. 6135961, paragraph 0023-0024, FIG. 1, FIG. 4-FIG. 6

By the way, the functions required of the terminal member for the ventilation port vary depending on, for example, the natural conditions of the location of the building. As a function of the terminal member for the ventilation port, for example, even if only one waterproof performance is required, a strict waterproof performance may be required, or a low-priced version having not so high waterproof performance may be required. If we try to arrange products according to the functions required for such ventilation port terminal members, the types of products will increase, and conversely, if we try to integrate various functions, the structure of the products will become complicated. The number of parts will increase.

Therefore, an object of the present invention is to provide a ventilation port terminal member capable of reducing the number of parts while having a function equal to or higher than that of a conventional ventilation port terminal member.

One aspect of the present invention that achieves the above object can be configured as a ventilation port terminal member described below.

That is, one aspect of the present invention is a ventilation port terminal member including an insertion tube formed in a wall surface of a building to be inserted into a ventilation port and a face provided at one end of the insertion tube. The terminal member for the ventilation port includes an annular flexible contact member along the outer peripheral edge of the one side end portion of the insertion cylinder, and the flexible contact member includes a wall surface contact portion that makes elastic contact with the wall surface and the wall surface contact portion. It is characterized by having a face contact portion that makes elastic contact with the face.

According to one aspect of the present invention, since the ventilation port terminal member includes a flexible contact member that makes elastic contact with both the wall surface and the face, the number of parts of the ventilation port terminal member can be reduced. Then, according to one aspect of the present invention, since the ventilation port terminal member includes a flexible contact member capable of elastic contact, it is possible to make soft contact with both the wall surface and the face.

One aspect of the present invention can be configured such that the face contact portion has a fin-shaped first liquid stop portion that comes into contact with the face due to elastic deformation to prevent liquid from entering the insertion tube.

According to one aspect of the present invention, since the face contact portion has a first liquid stop portion that can be elastically deformed at the time of contact with the face, the liquid enters the inside of the insertion tube from between the face and the face contact portion. You can prevent that. Further, since the first liquid stop portion has a fin shape, its tip side can be easily elastically deformed. Therefore, according to one aspect of the present invention, the terminal member for the ventilation port can effectively prevent the liquid from entering the insertion tube, and thus prevents the liquid from entering from the outside of the building to the inside of the building. be able to.

One aspect of the present invention can be configured such that the wall surface contact portion has a protruding second liquid stop portion that comes into contact with the wall surface due to elastic deformation to prevent liquid from entering the insertion tube.

According to one aspect of the present invention, since the wall surface contact portion has a second liquid stop portion that can be elastically deformed at the time of contact with the wall surface, the liquid enters the inside of the insertion cylinder from between the wall surface contact portion and the wall surface contact portion. You can prevent that. Further, since the second liquid stop portion has a protrusion shape, its tip side can be easily elastically deformed. Therefore, according to one aspect of the present invention, the terminal member for the ventilation port can effectively prevent the liquid from entering the insertion tube, and thus prevents the liquid from entering from the outside of the building to the inside of the building. be able to.

In one aspect of the present invention, the flexible contact member may be an integral molded body made of a thermoplastic elastomer that is fixed to the one side end of the insertion tube.

According to one aspect of the present invention, since the flexible contact member is a thermoplastic elastomer having fluidity at a high temperature, it can be easily molded by, for example, an injection molding machine. Further, since the flexible contact member is a thermoplastic elastomer that is flexible at room temperature, it can make soft contact with the wall surface and the face. By using a thermoplastic elastomer having excellent weather resistance for the flexible contact member, the durability of the ventilation port terminal member can be easily ensured. The insertion cylinder is made of a member separate from the insertion cylinder, and integrally includes a flexible contact member that contacts both the wall surface and the face. Therefore, the functions of the ventilation port terminal members can be integrated and the number of parts can be reduced.

In one aspect of the present invention, the flexible contact member has an annular protrusion that projects outward in the radial direction, and a first sealing material filling region in which the sealing material can be filled between the annular protrusion and the wall surface is provided. Can be configured to have.

In the case of a conventional terminal member for a ventilation port, for example, the wall surface of the building and the outer peripheral surface of the face are used as adhesive surfaces, and the sealing material is filled in a triangular shape in a cross-sectional view in the direction orthogonal to the wall surface. At this time, if the amount of the sealing material is too small, the waterproof performance cannot be improved, and if the amount of the sealing material is too large, the sealing material tends to protrude to the front side of the face.

On the other hand, the flexible contact member according to one aspect of the present invention has an annular projection capable of blocking the flow of the sealing material to the front side of the face from the viewpoint from the face side, and the annular projection shields the sealing material. It has a first sealant filling area on the back side so as to be a plate. Therefore, according to one aspect of the present invention, the flexible contact member suppresses the sealing material from protruding from the viewpoint from the face side, and when mounted on the wall surface, the ventilation port terminal member has an excellent appearance. Can be.

Further, according to one aspect of the present invention, since the flexible contact member has an annular protrusion capable of increasing the contact area with the sealing material, the adhesive strength of the sealing material can be increased. The flexible contact member is an annular shape capable of increasing the internal volume of the first sealant filling region by the height of protrusion from the outer peripheral surface of the flexible contact member which is the bottom surface of the first sealing material filling region. Has protrusions. Therefore, according to one aspect of the present invention, the filling amount of the sealing material in the first sealing material filling region can be increased, and the waterproof performance of the ventilation port terminal member can be improved.

One aspect of the present invention can be configured to have a second sealant filling region inward in the radial direction from the wall surface contact portion.

According to one aspect of the present invention, when the terminal member for a ventilation port is attached to a wall surface, a second sealant filling area is provided in a region hidden by the flexible contact member in a state where the wall surface contact portion and the wall surface are in contact with each other. Since it has, the appearance can be made so that the sealing material is not exposed.

According to the ventilation port terminal member of one aspect of the present invention, the number of parts of the ventilation port terminal member can be reduced as compared with the prior art while consolidating the functions.

It is an external perspective view including the front surface, the left side surface, and the bottom surface of the sleeve cap according to the embodiment. It is an external perspective view including the back surface, the left side surface, and the upper surface of the sleeve cap of FIG. It is a front view of the state where the face of the sleeve cap of FIG. 1 is removed. It is a rear view of the sleeve cap of FIG. FIG. 4 is a sectional view taken along line VV of FIG. It is a partially enlarged view of FIG.

Hereinafter, examples of the embodiments disclosed in the present application will be described with reference to the drawings. Here, in the present specification and the scope of claims, when "first" and "second" are described, they are used to distinguish different components, and a specific order or superiority or inferiority is used. It is not used to indicate. In the scope of the present specification and claims, for convenience, as shown in FIG. The front-rear direction with the front and the back as the back is described as the Y direction, and the height direction is described as the Z direction.

Embodiment [FIGS. 1 to 6]

Hereinafter, the sleeve cap 1 as an embodiment of the "terminal member for a ventilation port" of the present invention will be described with reference to the drawings. Here, an example in which the sleeve cap 1 is attached outdoors is described, and in the Y direction, the front side (front side of the sleeve cap 1, the right side in FIGS. 1 and 5) is the outdoor side, and the rear side (sleeve cap 1). The back side) will be described as the internal space (indoor) side of the building. However, these descriptions do not limit the usage method, mounting location, etc. of the sleeve cap 1.

Sleeve cap 1

The sleeve cap 1 is a facility attached to a ventilation port H (see FIG. 6) formed on a wall surface W or the like of a building to prevent wind blowing, rainwater intrusion, insect invasion, and the like. The sleeve cap 1 here is also referred to as a cooler cap, and is provided outdoors in order to close the ventilation port H in an unused state because the air conditioning equipment is not attached. As shown in FIG. 1, the sleeve cap 1 includes an insertion cylinder 10, a face 20, a waterproof packing 30 as a "flexible contact member", a soft packing 40, and a screw 50 as a "fastening member". It has. A tapping screw can be used as the screw 50.

The insertion cylinder 10 is a portion for attaching the sleeve cap 1 to the wall surface W or the like of the building by inserting it into the ventilation port H. The insertion cylinder 10 is a hollow cylinder that is arranged on the rear end side of the sleeve cap 1 in the Y direction and has an annular shape and extends in the Y direction when viewed from the front of the sleeve cap 1. As shown in FIG. 5, the insertion cylinder 10 has a cylindrical portion 11 and a flange portion 12 forming a “one side end portion”.

The cylindrical portion 11 is a portion inserted into the ventilation port H from the rear end side in the Y direction. The cylindrical portion 11 has a cylindrical shape extending forward in the Y direction with the rear end of the insertion cylinder 10 as a circular tubular end. The outer diameter and inner diameter of the cylindrical portion 11 are constant regardless of the position in the Y direction. The cylindrical portion 11 opens at the rear end toward the rear in the Y direction.

The flange portion 12 is a portion connected to the face 20. The flange portion 12 is located at the front end of the insertion cylinder 10 as the "one side end portion" and is connected to the front end of the cylindrical portion 11. As shown in FIG. 5, the flange portion 12 has a plate surface along the XZ plane, and as shown in FIG. 3, has a circular flat plate shape when viewed from the front. The radial inner regions of the cylindrical portion 11 and the flange portion 12 communicate with each other and penetrate the insertion cylinder 10 in the Y direction. The flange portion 12 is formed with a circular opening 13 that opens toward the front in the Y direction with the inner peripheral side of the "one side end portion" as the opening edge. The opening 13 is concentric with each of the cylindrical portion 11 and the flange portion 12.

In this way, a hollow portion 2 which is a substantially cylindrical space extending between the front end and the rear end in the Y direction is formed inside the insertion cylinder 10 (inner peripheral side of the cylindrical shape). As described above, the cavity portion 2 has a spatial shape having substantially the same circular cross section in the front-rear direction in the Y direction. However, the cavity portion 2 may be configured as, for example, having a polygonal cross section or a spatial shape such that the cross-sectional area differs between the front and the rear in the Y direction.

As shown in FIG. 2, the flange portion 12 is formed with a pilot hole 14 connected to the face 20 by a screw 50. The pilot hole 14 is formed so as to penetrate the flange portion 12 in the Y direction, which is the plate thickness direction, at a position close to the inner end in the radial direction of the flange portion 12. In the present embodiment, four pilot holes 14 are formed at equal intervals along the circumferential direction of the flange portion 12. The prepared hole 14 is subjected to burring processing (hole flange processing) for forming a rising edge (convex shape) toward the rear in the Y direction at the edge of the through hole opened by the hole processing. As a result, even if the flange portion 12 is made of a thin material, the depth of the screw hole is increased, and the fastening force of the screw 50 can be secured.

The face 20 is a portion provided at the front end in the Y direction, which is one end of the insertion cylinder 10. The face 20 here closes the opening 13 formed at one end of the insertion tube 10. The face 20 is configured to be removable from the insertion tube 10 when, for example, an air conditioner is attached to the building. The face 20 is arranged on the front side of the insertion tube 10 and has a round plate-like shape of an electronic balance. The face 20 has a central portion 21 and an outer frame portion 22 as shown in FIGS. 1, 5 and 6.

The central portion 21 is a portion that covers the opening portion 13 formed in the insertion cylinder 10 and is connected to the flange portion 12. The central portion 21 is located inside the face 20 in the radial direction when viewed from the front, and occupies a large area in front of the face 20. As shown in FIGS. 1 and 5, the central portion 21 has a plate surface along the XZ plane and has a circular flat plate shape when viewed from the front. A through hole through which the screw 50 is passed is formed in the central portion 21. The through hole is formed so as to penetrate the central portion 21 in the Y direction at a position close to the outer end in the radial direction of the central portion 21. In the present embodiment, four through holes are formed at equal intervals along the circumferential direction of the central portion 21 corresponding to the prepared holes 14 of the flange portion 12.

The outer frame portion 22 is a portion that covers the region including the outer peripheral edge 15 of the flange portion 12 as the “one side end portion” of the insertion cylinder 10. The outer frame portion 22 is located on the outer side in the radial direction of the face 20 when viewed from the front, and is connected to the outer edge of the central portion 21.

The outer frame portion 22 has a plate surface along the ring-shaped XZ plane when viewed from the front (see FIGS. 1, 5 and 6). More specifically, the outer frame portion 22 is formed as a stepped annular flange protruding from the outer periphery of the central portion 21. Then, as shown in FIG. 6, the outer frame portion 22 is bent toward the back side at both the outer peripheral end and the inner peripheral end and extends, and is a square shape that opens toward the back side in a side view. It is said to be in the shape of a gutter. Therefore, the outer frame portion 22 is formed so as to project one step from the central portion 21 toward the front side of the face 20. As a result, the amount of the head of the screw 50 attached to the central portion 21 protruding forward from the front end of the outer frame portion 22 (sleeve cap 1) is suppressed. At the same time, while the outer frame portion 22 is bent with a large radius of curvature at the outer peripheral end thereof, the amount of the outer frame portion tip 23, which is the end of the outer frame portion 22, protrudes toward the back surface side is suppressed. As described above, the outer frame portion 22 is configured to project one step toward the front side from the central portion 21, and as a result, the sleeve cap 1 is made thinner in the Y direction.

The insertion tube 10, the face 20, and the screw 50 are made of a metal material. In particular, since the sleeve cap 1 is installed outdoors, a stainless steel material having excellent workability, such as SUS304, which is strong in corrosion resistance and acid resistance in the atmosphere, is used for the insertion cylinder 10, the face 20, and the screw 50. .. However, when the sleeve cap 1 of the present embodiment is applied to a place where strong durability is not required without being exposed to wind and rain, for example, the sleeve cap 1 is not limited to a metal material but is made of a resin molded body or the like. Can be done.

The waterproof packing 30 is a portion that makes elastic contact with the connection target portion. The waterproof packing 30 is formed in an annular shape along the outer peripheral edge 15 of the flange portion 12 of the insertion cylinder 10. As shown in FIGS. 5 and 6, the waterproof packing 30 of the present embodiment is provided so as to sandwich both the front side and the back side of the flange portion 12 in the region including the outer peripheral edge 15. The waterproof packing 30 has a wall surface contact portion 31, a face contact portion 32, and an annular protrusion 33.

The wall surface contact portion 31 is a portion that makes elastic contact with the wall surface W. As shown in FIG. 6, the wall surface contact portion 31 extends rearward in the Y direction in the ring-shaped region on the outer peripheral side of the waterproof packing 30 when viewed from the rear surface. As shown in FIG. 6, the wall surface contact portion 31 is formed on a curved surface whose outer peripheral surface side is curved at the rear end which is the contact surface with the wall surface W.

As described above, the sleeve cap 1 is made easy to fit with the wall surface W by using the waterproof packing 30 which is a soft material for the wall surface contact portion 31 in contact with the wall surface W. Therefore, the sleeve cap 1 is excellent in workability.

The wall surface contact portion 31 has a liquid stop portion 31a as a “second liquid stop portion”. The liquid stop portion 31a is a portion that comes into contact with the wall surface W to prevent the liquid from entering the cavity 2 inside the insertion cylinder 10. The liquid stop portion 31a extends in a protruding shape from the base portion 32A toward the rear in the Y direction in a ring-shaped region in the rear view of the central portion in the radial direction of the wall surface contact portion 31. As shown in FIG. 6, the liquid stop portion 34 here has a wedge shape in which the width in the radial direction gradually narrows from the base portion 32A toward the rear.

Since the wall surface contact portion 31 has a liquid stop portion 31a that can be elastically deformed when it comes into contact with the wall surface W, a liquid such as rainwater enters into the cavity 2 inside the insertion cylinder 10 from between the wall surface contact portion 31 and the wall surface W. You can prevent that. Further, since the liquid stop portion 31a has a wedge shape, its tip side can be easily elastically deformed and brought into contact with the wall surface W without a gap. Therefore, according to the present embodiment, the sleeve cap 1 can effectively prevent the liquid from entering the cavity 2 inside the insertion cylinder 10, and by extension, the liquid from the outside of the building to the inside of the building. Can be blocked.

The face contact portion 32 is a portion that makes elastic contact with the back side surface 22 a of the outer frame portion, which is the back surface side of the outer frame portion 22 of the face 20. As shown in FIG. 6, the face contact portion 32 extends forward from the base portion 32A in the Y direction in a ring-shaped region in front view of the central portion of the water blocking packing 30 in the radial direction.

As shown in FIG. 6, the water blocking packing 30 is formed so that the wall surface contact portion 31 and the face contact portion 32 are in contact with each other at the boundary line L. As described above, since the sleeve cap 1 includes the waterproof packing 30 which elastically contacts both the wall surface W and the face 20 with the same member, the shape of the sleeve cap 1 is simplified and the functions are integrated to increase the number of parts. Can be reduced. Since the sleeve cap 1 includes the waterproof packing 30 that can be elastically contacted, the sleeve cap 1 can be softly contacted with both the wall surface W and the face 20.

The face contact portion 32 has a liquid stop portion 34 as a “first liquid stop portion”. The liquid stop portion 34 is a portion that comes into contact with the back side surface 22a of the outer frame portion of the face 20 to prevent the liquid from entering the cavity 2 inside the insertion cylinder 10. As shown in FIG. 6, the liquid stop portion 34 has a fin shape toward the front in the Y direction from the base portion 32A in a ring-shaped region in front view of the central portion in the radial direction of the face contact portion 32. It is growing. The liquid stop portion 34 of the present embodiment has a double ring shape arranged in parallel along the circumferential direction.

Since the face contact portion 32 has a liquid stop portion 34 that can be elastically deformed when it comes into contact with the face 20, a liquid such as rainwater enters into the hollow portion 2 inside the insertion cylinder 10 from between the face contact portion 32 and the face 20. You can prevent that. Further, since the liquid stop portion 34 has a fin shape, its tip side can be easily elastically deformed and brought into contact with the back side surface 22a of the outer frame portion without a gap. Therefore, according to the present embodiment, the sleeve cap 1 can effectively prevent the liquid from entering the cavity 2 inside the insertion cylinder 10, and by extension, the liquid from the outside of the building to the inside of the building. Can be blocked. Further, in the present embodiment, since the liquid stop portion 34 is formed in a double manner, even if the liquid infiltrates between the liquid stop portion 34 on the outer peripheral side and the face 20, the liquid stop portion on the inner peripheral side is formed. It is possible to prevent the liquid from entering the cavity 2 inside the insertion tube 10 between the 34 and the face 20.

Further, in the present embodiment, the liquid stop portion 34 is formed at the base portion 32A of the face contact portion 32. Then, a buried portion 12a in a region including the outer peripheral edge 15 of the flange portion 12 is embedded in the base portion 32A. That is, the liquid stop portion 34 on the inner peripheral side in the present embodiment is formed in the region of the base portion 32A in which the embedded portion 12a in which the flange portion 12 extends is embedded. As a result, the spring force of the flange portion 12 acts on the liquid stop portion 34 on the inner peripheral side, so that the liquid stop portion 34 can come into contact with the back side surface 22a of the outer frame portion more strongly. Therefore, the liquid stop portion 34 on the inner peripheral side, which comes into contact with the back side surface 22a of the outer frame portion stronger than the liquid stop portion 34 on the outer peripheral side, allows the liquid to more reliably infiltrate into the hollow portion 2 inside the insertion cylinder 10. Can be blocked.

The annular protrusion 33 is a portion that secures a region in which the sealing material can be filled. The sealing material can enhance the waterproof performance even when the sleeve cap 1 is attached to the tile surface where the wall surface W has joints, for example. The annular protrusion 33 is located at the outermost end of the waterproof packing 30 in the radial direction. The annular protrusion 33 has a plate surface along the XZ plane and projects outward in the radial direction from the central portion of the wall surface contact portion 31 in the Y direction, and has a ring-shaped flat plate shape when viewed from the rear. Since the waterproof packing 30 has the annular protrusion 33, a first sealing material filling region 35 capable of filling the sealing material is formed between the annular protrusion 33 and the wall surface W.

In the case of a conventional terminal member for a ventilation port, for example, the wall surface W of the building and the outer peripheral surface of the face 20 are used as adhesive surfaces, and the sealing material is filled in a triangular shape in a cross-sectional view in the direction orthogonal to the wall surface W. The sealing portion formed by curing such a sealing material is so-called "triangular caulking". At this time, if the amount of the sealing material is too small, the waterproof performance cannot be improved, and if the amount of the sealing material is too large, the sealing material tends to protrude to the front side of the face 20.

On the other hand, the waterproof packing 30 of the present embodiment has an annular protrusion 33 capable of blocking the flow of the sealing material to the front side of the face 20. Further, the waterproof packing 30 of the present embodiment has a first sealant filling region 35 on the back surface side so that the annular protrusion 33 serves as a shielding plate from the viewpoint from the side of the face 20. Therefore, the waterproof packing 30 of the present embodiment suppresses the sealing material from protruding from the viewpoint from the side of the face 20, and when attached to the wall surface W, the sleeve cap 1 has an excellent appearance. can.

Further, since the waterproof packing 30 of the present embodiment has an annular protrusion 33 capable of expanding the contact area with the sealing material, the adhesive strength of the sealing material can be increased. Then, the waterproof packing 30 increases the internal volume of the first sealing material filling region 35 by the height of protrusion from the outer peripheral surface of the waterproof packing 30 which is the bottom surface of the first sealing material filling region 35. Has an annular projection 33 capable of Therefore, according to the present embodiment, the filling amount of the sealing material in the first sealing material filling region 35 can be increased, and the waterproof performance of the sleeve cap 1 can be improved. In addition, as described above, the wall surface contact portion 31 is formed on a curved surface whose outer peripheral surface side is curved at the rear end which is the contact surface with the wall surface W, as shown in FIG. Therefore, the waterproof packing 30 can increase the contact area with the sealing material even between the wall surface W and the curved surface.

The annular protrusion 33 is arranged on the surface side with a gap from the tip 23 of the outer frame portion arranged in front of the annular protrusion 33. Then, this gap communicates with the contact portion between the back side surface 22a of the outer frame portion of the face 20 and the liquid stop portion 34. Therefore, the liquid that is prevented from entering the cavity 2 inside the insertion cylinder 10 by the contact between the back side surface 22a of the outer frame portion of the face 20 and the liquid stop portion 34 is the sleeve cap 1 due to gravity. It wraps around to the lower side and is discharged to the outside through this gap. Therefore, it is effectively prevented that the liquid is accumulated inside the sleeve cap 1.

A second sealant filling region 36 is formed inward in the radial direction from the wall surface contact portion 31. When the sleeve cap 1 is attached to the wall surface W, the wall surface contact portion 31 and the wall surface W come into contact with each other. The wall surface contact portion 31 has a ring shape that surrounds the outer circumference of the sleeve cap 1. Therefore, the second sealing material filling region 36 is located in a region hidden by the waterproof packing 30 in a state where the wall surface contact portion 31 and the wall surface W are in contact with each other. Then, although the second sealing material filling region 36 is filled, the excess sealing material is in contact with the wall surface contact portion 31 and the wall surface W, so that the wall surface contact portion 31 is directed outward in the radial direction. It does not flow, but flows inward in the radial direction, that is, toward the cavity 2. As described above, since the sleeve cap 1 has the second sealing material filling region 36, the appearance can be made so that the sealing material is not exposed.

The waterproof packing 30 may have ribs 37 extending in the radial direction on the back surface side thereof. The rib 37 is formed on the base portion 32A. The water stop packing 30 has an inner peripheral end in the radial direction in contact with a region where the screw 50 is formed. Therefore, the inner peripheral edge of the waterproof packing 30 is lacking so that the region in contact with the screw 50 is curved outward in the radial direction. Therefore, in order to secure the strength of this region, it is preferable that the rib 37 is arranged in the circumferential direction in accordance with the formation region of the screw 50.

The waterproof packing 30 is composed of a thermoplastic elastomer. Since the thermoplastic elastomer has fluidity at a high temperature, the waterproof packing 30 can be easily molded by, for example, an injection molding machine. At this time, since the thermoplastic elastomer is soft even when it is cooled and hardened, it can be removed from the mold even if it has a slightly undercut shape, and the shape of the waterproof packing 30 can be enhanced. can. Further, since the waterproof packing 30 is a thermoplastic elastomer having flexibility at room temperature, it can be in soft contact with the wall surface W and the face 20. The durability of the sleeve cap 1 can be easily ensured by using a thermoplastic elastomer having excellent weather resistance for the waterproof packing 30. Among the thermoplastic elastomers, it is particularly preferable to use an acrylic elastomer for the waterproof packing 30 because of its good compatibility with the sealing material.

A rubber-like material may be used for the waterproof packing 30. The method for molding the waterproof packing 30 with rubber is not particularly limited, and may be mold molding or extrusion molding. For example, in the case of extrusion molding, a string-shaped rubber cord having unmolded both ends may be molded, and both ends may be vulcanized together, and both ends of the molded rubber cord may be heat or adhesive. It may be connected with each other to form a ring shape. Then, the waterproof packing 30 may be formed separately from the insertion cylinder 10 and integrated by sticking or the like.

However, as described above, in the sleeve cap 1 of the present embodiment, the insertion cylinder 10 is made of a metal material, and the waterproof packing 30 is made of a thermoplastic elastomer. Therefore, according to the present embodiment, the insertion cylinder 10 and the waterproof packing 30 can be integrally formed. That is, the insertion cylinder 10 of the present embodiment is made of a member different from the insertion cylinder 10 and integrally includes a waterproof packing 30 that comes into contact with both the wall surface W and the face 20. Therefore, the functions of the sleeve cap 1 can be integrated to reduce the number of parts.

The flange portion 12 may be formed with a communication hole penetrating in the Y direction in a region including an outer peripheral edge 15 provided with a waterproof packing 30. As described above, the insertion cylinder 10 is provided with a waterproof packing 30 made of a member different from the insertion cylinder 10 so as to sandwich both the front side and the back side of the flange portion 12. On the surface of such a flange portion 12, the water blocking packing 30 tends to be an interface where the waterproof packing 30 is peeled off. However, since the communication hole is formed in the flange portion 12, the thermoplastic elastomer of the water stop packing 30 flows into the communication hole when the insertion cylinder 10 and the water stop packing 30 are integrally molded. As a result, the waterproof packing 30 on the front side of the flange portion 12 and the waterproof packing 30 on the back side of the flange portion 12 are connected via the communication holes. Therefore, the waterproof packing 30 can be prevented from peeling off from the flange portion 12.

In this embodiment, an example is shown in which the waterproof packing 30 is integrally formed with the insertion cylinder 10. However, the waterproof packing 30 may be integrally formed on the back side of the face 20, for example, the back side surface 22a of the outer frame portion. By integrally forming the waterproof packing 30 on the back side surface 22a of the outer frame portion, it is possible to more strongly prevent rainwater from entering between the face 20 and the waterproof packing 30.

The soft packing 40 is a portion for flexibly attaching the sleeve cap 1 to the pipes provided at the ventilation port H having different inner diameters with elasticity (restorability). The soft packing 40 is attached to the outer peripheral surface of the cylindrical portion 11. The soft packing 40 has a cylindrical shape extending forward in the Y direction with the rear end slightly forward from the rear end of the cylindrical portion 11. Since the soft packing 40 is attached to the outer peripheral surface of the cylindrical portion 11, the inner diameter thereof is substantially the same as the outer diameter of the cylindrical portion 11. The soft packing 40 is adhered to the cylindrical portion 11 with, for example, an adhesive or double-sided tape. However, the connection between the insertion cylinder 10 and the soft packing 40 is made by forming the inner diameter of the soft packing 40 to be slightly smaller than the outer diameter of the cylindrical portion 11 and then attaching the soft packing 40 to the outer peripheral surface of the cylindrical portion 11. There may be. The outer diameter and inner diameter of the cylindrical portion 11 are constant regardless of the position in the Y direction.

The soft packing 40 is formed of a foam. In particular, since the sleeve cap 1 is installed outdoors to prevent foreign substances such as wind and rain from entering, polyolefin foam having excellent weather resistance and sealing properties is used for the soft packing 40. The polyolefin foam may be mixed with an ethylene-vinyl acetate copolymer in order to reduce its crystallinity and impart flexibility.

Other application examples

The "ventilation port terminal member" of the present invention can also be applied to, for example, a vent cap (ventilation port cover) attached to the opening end of a ventilation hole that penetrates the inside and outside of a wall to ventilate the internal space of a building. Even in that case, the vent cap is provided with an annular flexible contact member that makes elastic contact with both the wall surface W and the cap body so as to be along the outer peripheral edge 15 of one side end of the insertion cylinder 10. Just do it. As a result, the number of parts of the outer wall vent cap can be reduced as compared with the conventional technology while consolidating the functions.

1 Sleeve cap (terminal member for ventilation port)
2 Cavity part 10 Insertion cylinder 11 Cylindrical part 12 Flange part (one side end)
12a Buried part 13 Opening (one side end)
14 Pilot hole 15 Outer peripheral edge 20 Face 21 Central part 22 Outer frame part 22a Outer frame part back side surface 23 Outer frame part tip 30 Water stop packing (flexible contact member)
31 Wall contact part 31a Liquid stop part (second liquid stop part)
32 Face contact part 32A Base part 33 Ring protrusion 34 Liquid stop part (first liquid stop part)
35 First sealing material filling area 36 Second sealing material filling area 37 Ribs 40 Soft packing 50 Screws (fastening member)
H Ventilation port L Boundary line between wall surface contact part 31 and face contact part W W wall surface

Claims (6)

An insertion tube that plugs into a ventilation port formed on the wall of the building,
In the ventilation port terminal member provided with a face provided at one end of the insertion cylinder,
Further, the ventilation port terminal member includes an annular flexible contact member along the outer peripheral edge of the one side end of the insertion tube.
The flexible contact member is a ventilation port terminal member having a wall surface contact portion that makes elastic contact with the wall surface and a face contact portion that makes elastic contact with the face.
The terminal member for a ventilation port according to claim 1, wherein the face contact portion has a fin-shaped first liquid stop portion that comes into contact with the face due to elastic deformation to prevent liquid from entering the insertion cylinder.
The ventilation port according to claim 1 or 2, wherein the wall surface contact portion has a protruding second liquid stop portion that comes into contact with the wall surface due to elastic deformation to prevent liquid from entering the insertion cylinder. Terminal member.
The terminal member for a ventilation port according to any one of claims 1 to 3, wherein the flexible contact member is an integral molded body made of a thermoplastic elastomer that is fixed to the one end of the insertion tube.
The flexible contact member has an annular protrusion that protrudes outward in the radial direction.
The terminal member for a ventilation port according to any one of claims 1 to 4, which has a first sealing material filling region capable of filling the sealing material between the annular protrusion and the wall surface.
The terminal member for a ventilation port according to any one of claims 1 to 5, which has a second sealing material filling region inward in the radial direction from the wall surface contact portion.

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