JP4390621B2 - Connection structure for air conditioning ducts for railway vehicles - Google Patents

Description

  The present invention relates to a connection structure for an air conditioning duct for a railway vehicle made of a heat insulating board made of glass wool or carbon fiber.

In general, in a railway vehicle, a plurality of air-conditioning ducts are connected along the longitudinal direction of the vehicle at the back of the ceiling or under the floor, which are not directly seen from the passenger cabin, and a duct route is formed. The air-conditioning inside the car is done by the equipment.
And this kind of air-conditioning duct is formed using the duct material which integrally formed in the rectangular arrangement | positioning the heat insulation board from which the lightweight width dimension which uses glass wool or carbon fiber as a raw material differs.
As shown in FIG. 7, this conventional railcar air-conditioning duct connection structure AA has a rectangular cross section and one end of one air-conditioning duct 1 is fitted from one opening of a strip-shaped metal frame 100, and from the other opening. One end of the other air-conditioning duct 1 is fitted inside, and the opening end portions 1c of both air-conditioning ducts abut each other at the center position of the metal frame 100. Riveting the blind rivet 140 with the washer 130 adhered to the inner peripheral surface of the air conditioning duct 1 with respect to the large number of insertion holes 110 and 120 formed corresponding to the positions around the edges, In order to connect the air-conditioning ducts 1 and achieve sealing performance, a sealing part 150 by applying or filling a sealant is provided at a riveting place or a butt-part between the air-conditioning ducts, in addition to the butt and riveting. Forming Finally, it has a structure that wound around and aluminum tape 160 as an exterior tape across the air-conditioning duct of the butted portion.

However, in such an air conditioning duct connection structure AA,
1. It is necessary to prepare in advance, such as drilling the insertion holes 110 and 120 in advance in the periphery of the metal frame 100 and the butt end periphery of the air conditioning duct 1;
2. Points that require prior setup such as pre-bonding the washer 130 to the inner peripheral surface side of the insertion hole 120 of the air conditioning duct 1 part fitted inside the metal frame 100,
3. A lot of blind rivets 140 have to be riveted and time-consuming,
4. A special tool for riveting the blind rivet 140 is necessary.
5. Since there is a slight gap in the abutting part and riveting part between the air conditioning ducts 1, the seal part 150 is formed at the riveting part and the abutting part between the air conditioning ducts to form high airtightness. What you have to do,
In this respect, there are problems to be solved in terms of requiring labor for manufacturing and improving airtightness with a simpler structure.
The present invention has been made in view of the above circumstances, and the object of the present invention is to improve the connection labor and to improve the airtightness of the connection portion between the air conditioning ducts with a simple structure. It is in the point which provides the connection structure of the air-conditioning duct for rail vehicles.

In the connection structure of railway vehicle air conditioning ducts, end openings of the air conditioning ducts in which the heat insulation boards are formed in a square cross section are butted together, and the air conditioning ducts extend over the entire outer periphery of the end portions of the air conditioning ducts. Wrap a band-shaped joining tape that joins the ends, and bond a band-shaped joining frame that is shorter than the entire circumference of the air-conditioning duct and stiffer than the air-conditioning duct to the place where the bonding tape is wound and, it is then wound around the air conditioning duct together with armor tape in a state of covering the connecting frame and adhesive tape.

According to the said structure , in the state wound over the outer peripheral surface of air-conditioning ducts with the joining tape, the perimeter of the abutting part of air-conditioning duct end parts is sealed, and in the winding location of this joining tape, By bonding the connecting frames , the air-conditioning ducts can be temporarily connected to each other and restrained by the rigidity of the connecting frames , and the air-conditioning ducts are wound around each other with an exterior tape without losing their shape. can do.

Therefore, it requires a lot of riveting work and production work, and it is air-conditioning without using a dedicated tool compared to the conventional connection structure of a railcar air conditioning duct that requires a dedicated tool for riveting. Since the ducts can be connected to each other, the labor and time can be greatly reduced, and while the bonding strength is maintained by the connecting frame body , the air conditioning ducts are doubled by the bonding tape , the connecting frame body and the exterior tape, Since the air-conditioning duct path having high airtightness can be formed with a simple structure such as triple sealing, the quality of the connection structure of the air-conditioning duct for railway vehicles can be improved by the simple structure.

In the connection structure of the air-conditioning duct for railway vehicles, butt end opening portions of the air-conditioning duct formed with the insulation board in the cross-sectional rectangular shape, over the end portion outer peripheral surfaces of the air-conditioning ducts together the collision, the outer periphery of the air-conditioning duct Adhering a strip-shaped connecting frame that is shorter than the entire circumference of the surface and stiffer than the air-conditioning duct , and excluding the bonded connecting frame, the end of the air-conditioning duct on the outer peripheral surface of both ends of the air-conditioned ducts sealing means for sealing the parts together is provided, it is then wound around the air conditioning duct together with armor tape in a state of covering the connecting frame and sealing means.

According to the above configuration, the connecting frame member is bonded over the end portion outer peripheral surfaces of the air-conditioning duct butted, except the glued joint frame body, the end portion outer peripheral surfaces of the air-conditioning duct butted With the sealing means provided over the whole, the entire circumference of the abutting portion between the air conditioning duct ends is sealed, and the air conditioning ducts can be connected to each other to be in a temporarily connected state constrained by the rigidity of the frame body. In this state, the air-conditioning ducts can be wound with the exterior tape without causing the air-conditioning ducts to lose their shape.

Therefore, it requires a lot of riveting work and production work, and it is air-conditioning without using a dedicated tool compared to the conventional connection structure of a railcar air conditioning duct that requires a dedicated tool for riveting. it is possible to connect the duct to each other, it is possible to greatly reduce the work effort, while the bonding strength is maintained by the connecting frame, doubly by the sealing means and the exterior tape conditioning duct mutually connecting frame Since the air-conditioning duct path having high airtightness can be formed with a simple structure such as being sealed, the quality of the connection structure of the air-conditioning duct for railway vehicles can be improved.

In the connection structure of railcar air conditioning ducts, end openings of air conditioning ducts with heat insulation boards formed in a square cross section are butted together, shorter than the entire circumference of the outer peripheral surface of the air conditioning duct, and more rigid than the air conditioning duct the connecting frame body, bonded over the end portion outer peripheral surfaces of the air-conditioning duct butted, are then wound around the air conditioning duct together with armor tape in a state of covering the connecting frame body.

According to the above configuration , by adhering the connecting frame over the outer peripheral surfaces of the ends of both air-conditioning ducts that are abutted, the ducts can be in a temporarily connected state constrained by the connecting frame. In this state, the air conditioning ducts can be wound around each other with an exterior tape without causing the air conditioning ducts to lose their shape.

Therefore, it requires a lot of riveting work and production work, and it is air-conditioning without using a dedicated tool compared to the conventional connection structure of a railcar air conditioning duct that requires a dedicated tool for riveting. it is possible to connect the duct to each other, it is possible to greatly reduce the work effort, while the bonding strength is maintained by the connecting frame, tightness in a simple structure such as the air-conditioning duct to each other connecting frame and armor tape Therefore, the quality of the connection structure of the railcar air conditioning duct can be improved.

In the connection structure of an air conditioning duct for a railway vehicle , the connecting frame is formed in a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and the inner corner corners corresponding to all outer corner corners of the air conditioning duct are bent and formed. Has been .

According to the above configuration , in a state where the joining frame body is bonded across the outer peripheral surfaces of the end portions of both air-conditioning ducts that are abutted, all the outer corner corners of the abutting air-conditioning duct are supported by the inner corner corners of the joining frame body. Since the structure is such that it is easy to install, the air-conditioning ducts can be easily brought into a stable temporary connection state that is not easily deformed, and the exterior tape can be easily wound in this state.

  Therefore, it is possible to carry out connection work between the air-conditioning ducts with good setup, and it is possible to improve productivity.

In the connection structure of a railcar air conditioning duct, both end portions of the connecting frame body are formed to be smaller than the plate width of the other portion, and either side end of this end portion is equal to the plate width of the connecting frame body. It is formed along a bisector.

According to the above arrangement, by bonding the side edges along uniformly bisector of both ends of the connecting frame, the collision intertwined end outer peripheral surface over by connecting frame member of both the air-conditioning duct, connecting frame The center position of the plate width of the body is positioned corresponding to the boundary between the air-conditioning ducts abutted against each other, and the frame body can be bonded to the abutted air-conditioning duct in an evenly allocated state.

Therefore, the connecting frame body can be bonded in an evenly distributed state over the outer peripheral surfaces of the ends of both air-conditioning ducts that are abutted with each other in a simple and quick operation, so that the workability is good and the assembly efficiency is good. As a result, it is possible to further improve the productivity.
And the characteristic structure of claim 1 of the present invention is such that the end openings of the air conditioning ducts in which the heat insulating boards are formed in a square cross section are butted together, and the entire circumference of the end outer peripheral surfaces of the both air conditioning ducts that are butted together. A belt-shaped joining tape that joins the ends of the air-conditioning duct is wound, and a belt-shaped joining frame that is shorter than the entire circumference of the outer peripheral surface of the air-conditioning duct and is more rigid than the air-conditioning duct. It is a connection structure of an air conditioning duct for a railway vehicle in which the body is bonded and the air conditioning ducts are wound around each other with an exterior tape in a state of covering the connecting frame body and the joining tape,
The connecting frame body is bent into a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and inner corner corners corresponding to all outer corner corners of the air conditioning duct are formed in the connecting frame body.
According to a second aspect of the present invention, there is provided a belt-like connecting frame that is shorter than the entire circumference of the air-conditioning duct in which the heat insulation board is formed in a square cross section and is more rigid than the air-conditioning duct. Adhering over the outer peripheral surfaces of the ends of both air-conditioning ducts that have been butted together, and sealing the air-conditioning duct ends to the outer peripheral surfaces of the ends of both air-conditioning ducts that have been abutted, excluding the bonded frame A connection structure for an air conditioning duct for a railway vehicle in which a sealing means is provided and the air conditioning ducts are wound around each other with an exterior tape in a state of covering the connecting frame and the sealing means,
The connecting frame body is bent into a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and inner corner corners corresponding to all outer corner corners of the air conditioning duct are formed in the connecting frame body.
According to a third aspect of the present invention, a belt-like connecting frame that is shorter than the entire circumference of the outer peripheral surface of the air conditioning duct in which the heat insulating board is formed in a square cross section and has rigidity than the air conditioning duct is provided at the end opening. Bonding over the outer peripheral surface of the ends of both air conditioning ducts that are faced to each other, and connecting the air conditioning ducts with the exterior tape in a state of covering the connecting frame body, the connection structure of the railcar air conditioning duct,
The connecting frame body is bent into a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and inner corner corners corresponding to all outer corner corners of the air conditioning duct are formed in the connecting frame body.
According to a fourth aspect of the present invention, the end openings of the air conditioning ducts in which the heat insulating boards are formed in a square cross section are butted together, and the air conditioning is performed over the entire circumference of the outer peripheral surfaces of the both ends of the air conditioning ducts. A belt-like joining tape that joins the ends of the duct is wound, and a belt-like joining frame that is shorter than the entire circumference of the outer peripheral surface of the air-conditioning duct and is more rigid than the air-conditioning duct is wrapped around the joining portion of the joining tape. The connection structure of the air-conditioning duct for a railway vehicle in which the air-conditioning ducts are wound with an exterior tape in a state of being bonded and covering the connecting frame and the joining tape,
The both ends of the connecting frame are formed to be smaller than the plate width of the other portions, and either side edge of this end portion is formed along an equal bisector of the plate width of the connecting frame. It is in.
The characteristic configuration of claim 5 of the present invention is that an end opening portion is provided with a belt-like connecting frame body which is shorter than the entire circumference of the outer peripheral surface of the air conditioning duct in which the heat insulation board is formed in a square cross section and which is more rigid than the air conditioning duct. Adhering over the outer peripheral surfaces of the ends of both air-conditioning ducts that have been butted together, and sealing the air-conditioning duct ends to the outer peripheral surfaces of the ends of both air-conditioning ducts that have been abutted, excluding the bonded frame A connection structure for an air conditioning duct for a railway vehicle in which a sealing means is provided and the air conditioning ducts are wound around each other with an exterior tape in a state of covering the connecting frame body and the sealing means.
The both ends of the connecting frame are formed to be smaller than the plate width of the other portions, and either side edge of this end portion is formed along an equal bisector of the plate width of the connecting frame. It is in.
According to a sixth aspect of the present invention, a strip-shaped connecting frame body that is shorter than the entire outer periphery of the air conditioning duct in which the heat insulating board is formed in a square cross section and is more rigid than the air conditioning duct is provided with an end opening. Bonding over the outer peripheral surface of the ends of both air conditioning ducts that are faced to each other, and connecting the air conditioning ducts with the exterior tape in a state of covering the connecting frame body, the connection structure of the railcar air conditioning duct,
The both ends of the connecting frame are formed to be smaller than the plate width of the other portions, and either side edge of this end portion is formed along an equal bisector of the plate width of the connecting frame. It is in.

  Hereinafter, a connection structure of a railcar air conditioning duct to which the present invention is applied will be described with reference to the drawings.

[First Embodiment]
1 to 4 show a connection structure A for an air conditioning duct for a railway vehicle according to a first embodiment of the present invention. For example, a plurality of air conditioning ducts 1 are connected along the longitudinal direction of the railway to the ceiling of the railway vehicle. Then, the duct route B is formed, and the air conditioning in the vehicle is performed by the air conditioning equipment (not shown) connected to the air conditioning duct 1.

  The air-conditioning duct 1 includes a pair of hard long and short heat insulating boards 1A and 1B formed of carbon fiber or glass wool as a material material, and is integrally formed in a rectangular cross-sectional arrangement to form a rectangular duct passage B1 inside. Form.

Moreover, the aluminum foil layer is formed in the surface of the outer peripheral surface 1a and the internal peripheral surface 1b of this air-conditioning duct 1, and it is formed in the smooth surface.

As shown in FIG. 1 and FIG. 2, the connection structure A for an air conditioning duct for a railway vehicle according to this embodiment abuts the end openings 1 c and 1 c of the air conditioning ducts 1, 1, and the air conditioning ducts 1 that are abutted against each other. , 1 is wound around the entire circumference of the outer peripheral surface “a” of the end portion of the air-conditioning duct 1, and a belt-like joining tape 2 for joining the air-conditioning duct end portions is wound around the outer circumference 1 </ b> A of the air-conditioning duct 1. In a state in which the connecting frame plate 3, which is a strip-shaped connecting frame body that is shorter than the entire circumference and has rigidity than the air conditioning duct 1 , is bonded via the adhesive layer 4, and the connecting frame plate 3 and the bonding tape 2 are covered. The air-conditioning duct is wound around with the exterior tape 5.

The said joining tape 2 is comprised from the base tape and the adhesive layer of one surface in 2 A of double-sided tapes 2A which apply | coated the adhesive to both surfaces of base tapes, such as a polyethylene film. Here, examples of the adhesive include low-foam urethane, foamed butyl rubber, acrylic, and the like. The adhesive paper on the other surface of the double-sided tape 2A is wound in a long state with a release paper attached. Double-sided tape is used.

The connecting frame plate 3 is a substantially upward U-shaped metal plate such as a strip-shaped aluminum plate made up of a bottom plate 3a, left and right side plates 3b, and an upper plate 3c corresponding to a cross-sectional shape excluding the central portion of the upper surface of the air conditioning duct 1 . is formed by bending the bent shape, the corners corner 3d is formed in a frame shape corresponding to all of the outer corner the corner 1d of the air-conditioning duct 1 among formed by this bending. In this embodiment, the connecting frame plate 3 having a plate thickness of about 2 mm that is more rigid than the air conditioning duct 1 having a plate thickness of about 10 mm to 15 mm is used.

Further, the upper plate 3c continuously formed at both end portions of the connecting frame plate 3, that is, the upper ends of the side plates 3b is half the width of the other plates 3a and 3b as shown in FIGS. The one end 3e of the upper plate 3c is formed along an equal bisector z of the plate width of the connecting frame plate 3.

  The exterior tape 5 is made of, for example, an aluminum tape in which an adhesive is coated on one side of a base tape made of metal foil, and the tape width is wider than the width of the connecting frame plate 3 and is wound in a long length. Things are used.

If it is such a structure, as shown in FIG. 2, the double-sided tape 2A is attached to one adhesive layer over the entire circumference of the end outer peripheral surface a of both air-conditioning ducts 1 and 1, which are abutted. The constructed joining tape 2 is wound, and the entire circumference of the butted portion between the air-conditioning duct end openings 1c is sealed. Here, since the outer peripheral surface 1a of the air-conditioning duct 1 is formed on a smooth surface formed with an aluminum foil layer , a winding state with high adhesive quality and sealing property can be obtained when the bonding tape 2 is wound.

  Next, the release paper of the double-sided tape 2A is peeled off to expose the adhesive layer on the other side, and the connecting frame plate 3 is elastically deformed in the direction to open the left and right side plates 3b outward with respect to the bottom plate 3a, and the air conditioning duct The side edge 3f that fits and surrounds from the bottom surface side of the boundary part a straddling each other and is along the equal bisector of the upper plate 3c at both ends of the connecting frame plate 3 is positioned at the butt part b of the air conditioning ducts In addition, as shown in FIG. 3, the connecting frame plate 3 is bonded through an adhesive layer 4 composed of an adhesive layer coated on the other surface of the double-sided tape 2 </ b> A, and the air conditioning ducts 1 are connected to each other. Make a temporary connection.

  Next, as shown in FIG. 4, the air-conditioning ducts 1 can be connected by winding the exterior tape 5 across the ducts 1 temporarily connected with the connecting frame plate 3 as a boundary.

In this state, the airtight ducts are double- and triple-sealed by the joining tape 2, the joining frame plate 3, and the exterior tape 5, while the joining strength is maintained by the joining frame plate 3. An air conditioning duct path can be formed.

[Second Embodiment]
In the second embodiment, points different from the first embodiment will be described, the same components are denoted by the same reference numerals, and details thereof will be omitted.
FIG. 5 shows a connection structure A for an air conditioning duct for a railway vehicle according to a second embodiment. The end openings 1c of the air conditioning duct 1 in which the heat insulating boards 1A and 1B are formed in a square shape are butted together. Along the outer peripheral surface a of the air conditioning ducts 1, 1, the belt-shaped connecting frame plate 3 that is shorter than the entire outer peripheral surface of the air conditioning duct 1 and is more rigid than the air conditioning duct 1 is adhered by the adhesive layer 3B. Sealing means 6 for sealing the air-conditioning duct end portions is provided on the outer peripheral surface portion c of both ends of the air-conditioning ducts 1 and 1 except for the bonded connecting frame plate 3, and the connecting frame plate 3 and the sealing means are provided. The air-conditioning ducts are wound around each other with the exterior tape 5 in a state of covering 6.

Even if the adhesive layer 3B is formed by sticking a double-sided tape in advance to only the adhesive part of the air-conditioning ducts 1 and 1 that are faced to each other, the bonding frame plate 3 corresponds to the adhesive layer 3B. It may be configured by applying an adhesive. In addition, by forming the adhesive layer 3B pre-coated with adhesive on the inner peripheral surface of the connecting frame plate 3, it may be adhered to the outer peripheral surface of the butt portion between the air conditioning ducts. Alternatively, release paper may be attached to the adhesive layer 3B, and the release paper may be peeled off when the connecting frame plate 3 is used so that the adhesive layer 3B is in use.

  The sealing means 6 may, for example, apply an adhesive tape or apply a sealing agent to the outer peripheral surface portion c of the ends of both air-conditioning ducts that are abutted except for the bonded frame plate 3. Configured.

  With such a configuration, the jointed frame plate 3 bonded across the outer peripheral surface a of the both air-conditioning ducts 1 and 1 joined together, and the both air-conditioned units except for the joined joint frame plate 3 The sealing means 6 provided over the end portion outer peripheral surface portion c of the ducts 1 and 1 seals the entire circumference of the abutting portion between the air conditioning duct end portions, and the air conditioning ducts A temporary connection state constrained by the rigidity can be obtained, and in this state, the air conditioning ducts can be wound around each other with the exterior tape 5 without being deformed.

In this state, the air-conditioning duct having a simple structure in which the air-conditioning ducts are double-sealed by the connecting frame plate 3 , the sealing means 6, and the exterior tape 5 while the bonding strength is maintained by the connecting frame plate 3. A path can be formed.

[Another embodiment]
1) As shown in FIG. 6, as the connection structure of other railway vehicle air conditioning ducts, the end openings 1 c of the air conditioning duct 1 in which the heat insulation board 1 </ b> A is formed in a square shape are abutted, and the outer peripheral surface of the air conditioning duct 1 The belt-shaped connecting frame plate 3 that is shorter than the entire circumference of the air-conditioning duct 1 and is more rigid than the air-conditioning duct 1 is bonded via the adhesive layer 3C across the outer peripheral surfaces a of the end portions of the air-conditioning ducts 1 and 1 that are abutted. A simple structure in which the air-conditioning ducts are wound with the exterior tape 5 in a state of covering the connecting frame plate 3 may be used.

  In this case, the connection frame plate 3 is bonded to the end outer peripheral surface a of both the air-conditioning ducts 1 and 1 that are abutted to each other so that the air-conditioning ducts are in a temporarily connected state constrained by the connection frame plate 3. In this state, the air-conditioning ducts can be wound around each other with the exterior tape 5 without losing the shape of the air-conditioning ducts. In this state, the air-conditioning duct is maintained while the joining strength is maintained by the connecting frame plate 3. The air-conditioning duct path with high airtightness can be formed with a simple structure such as connecting the frame plate 3 and the exterior tape 5 to each other.

2) In the said embodiment, the connection structure A of such an air-conditioning duct 1 was demonstrated using the air-conditioning duct 1 formed from the pair of hard long and short heat insulation boards formed using carbon fiber or glass wool as a raw material. However, the present invention is not limited to this, and the present invention may be applied to an air conditioning duct connection structure using an air conditioning duct formed of an aluminum plate , an FRP plate, or the like.

  3) Although the connection frame board 3 in the said embodiment demonstrated what corresponds to cross-sectional shape except the center part of the upper surface of the air-conditioning duct 1, it is not restricted to this, For example, a part of rectangular frame shape was cut | disconnected It may correspond to a cross-sectional shape excluding a part of the upper surface of the air conditioning duct 1.

4) The connecting frame plate 3 may be formed by bending an aluminum plate or the like having the same plate width. In this case, a notch or a mark is marked along an equal bisector of the plate width of the upper plate. The connecting frame plate may be configured to be able to be bonded in an evenly distributed state across the outer peripheral surfaces of the end portions of the air-conditioning ducts that are abutted.

Perspective view showing the connection between air conditioning ducts The perspective view which shows an air-conditioning duct, a joining layer, and a connecting frame board The perspective view which shows the temporary connection state which connected the air-conditioning ducts with the frame board The perspective view which shows the connection state of the air-conditioning duct of 1st Embodiment. The simplified perspective view which shows the connection structure of the air-conditioning ducts of 2nd Embodiment The simplified perspective view which shows the connection structure of the air-conditioning ducts of another embodiment Explanatory drawing showing connection structure of conventional railway vehicle air conditioning duct (A) Explanatory drawing showing connection relationship between air conditioning ducts (B) Explanatory drawing showing cross section of connection state (C) shows connection state between air conditioning ducts Illustration showing

Explanation of symbols

A Connecting structure for air conditioning ducts for railway vehicles 1 Air conditioning duct z Equal bisector 1A Heat insulation board 1d Outer corner corner 2 Joining tape 3 Connecting frame (connecting frame plate)
3d Inner corner corner 4 Adhesive layer 5 Exterior tape 6 Sealing means

Claims (6)

Strip joining tape butt end opening portions of the air-conditioning duct formed with the insulation board in the cross-sectional rectangular shape, joined to each other air-conditioning duct end over the entire circumference of the end portion outer peripheral surfaces of the air-conditioning ducts together the butt A belt-shaped connecting frame that is shorter than the entire circumference of the air-conditioning duct and is more rigid than the air-conditioning duct is bonded to the place where the bonding tape is wound. It is a connection structure of an air conditioning duct for a railway vehicle in which the air conditioning ducts are wound with an exterior tape in a covering state ,
The railcar air conditioner is formed by bending the connecting frame body into a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and forming inner corner corners corresponding to all outer corner corners of the air conditioning duct in the connecting frame body. Duct connection structure . The ends of both air-conditioning ducts, which are shorter than the entire circumference of the air-conditioning duct formed with a heat insulation board in a square cross section and have a stiffer frame than the air-conditioning duct. bonded over the outer peripheral surface, except for the glued joint frame body is provided with sealing means for sealing the end portion outer peripheral surface portion in the air-conditioning duct end portions of the two air-conditioning ducts butted, the connecting frame and the sealing It is a connection structure of an air conditioning duct for a railway vehicle in which air conditioning ducts are wound around each other with an exterior tape in a state of covering the means ,
The railcar air conditioner is formed by bending the connecting frame body into a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and forming inner corner corners corresponding to all outer corner corners of the air conditioning duct in the connecting frame body. Duct connection structure . The insulation board shorter than the entire circumference of the outer peripheral surface of the air-conditioning duct formed in cross section rectangular shape, the ends of both the air-conditioning duct a band-like connecting frame member having a rigidity than the air-conditioning duct, the end opening portions is butted It is a connection structure for an air conditioning duct for a railway vehicle in which the air conditioning ducts are wound around each other with an exterior tape in a state of being bonded over the outer peripheral surface and covering the connecting frame body ,
The railcar air conditioner is formed by bending the connecting frame body into a bent shape corresponding to the cross-sectional shape of the air conditioning duct, and forming inner corner corners corresponding to all outer corner corners of the air conditioning duct in the connecting frame body. Duct connection structure . A strip-shaped joining tape that joins the air-conditioning duct ends across the entire circumference of the outer peripheral surfaces of the ends of the air-conditioning ducts that face each other. A belt-shaped connecting frame that is shorter than the entire circumference of the air-conditioning duct and is more rigid than the air-conditioning duct is bonded to the place where the bonding tape is wound. It is a connection structure of an air conditioning duct for a railway vehicle in which the air conditioning ducts are wound with an exterior tape in a covering state,
Both end portions of the connecting frame body are formed to be narrower than the plate width of the other portion, and either side end of the end portion is formed along an equal bisector of the plate width of the connecting frame body. A connection structure for an air conditioning duct for a railway vehicle. The ends of both air-conditioning ducts, which are shorter than the entire circumference of the air-conditioning duct formed with a heat insulation board in a square cross section and have a stiffer frame than the air-conditioning duct. Sealing means for sealing the air-conditioning duct ends to each other is provided on the outer peripheral surface portions of both ends of the air-conditioning ducts which are bonded together, excluding the bonded connecting frame, and the connecting frame and sealing. It is a connection structure of an air conditioning duct for a railway vehicle in which air conditioning ducts are wound around each other with an exterior tape in a state of covering the means,
Both end portions of the connecting frame, modestly form than the plate width of the other portions, one of the side edge of the end portion, formed along equally bisector of the plate width of the connecting frame A connection structure for an air conditioning duct for a railway vehicle. The end of both air conditioning ducts where the end openings are abutted with a strip-shaped connecting frame that is shorter than the entire outer circumference of the air conditioning duct with the heat insulation board formed in a square cross section and is more rigid than the air conditioning duct It is a connection structure for an air conditioning duct for a railway vehicle in which the air conditioning ducts are wound around each other with an exterior tape in a state of being bonded over the outer peripheral surface and covering the connecting frame body,
Both end portions of the connecting frame body are formed to be narrower than the plate width of the other portion, and either side end of the end portion is formed along an equal bisector of the plate width of the connecting frame body. A connection structure for an air conditioning duct for a railway vehicle.

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