JPH064533U - Connection structure of ducts - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to be able to efficiently connect ducts to other objects to be connected with one touch and to maintain airtightness. A connection holding body having a connection opening for connecting to an air conditioning duct is provided with a guide holding portion having a communication opening communicating with the connection opening, and the connection opening of the connection target body or a vicinity thereof. To this end, an elastic packing is projected and fixed in the direction of the center of the connection opening so that an opening smaller than this connection opening is formed, and one end of the air conditioning duct is inserted into the connection opening of the connected body from the opening of the elastic packing. , A connection structure of ducts formed by fitting and connecting.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connection structure for air conditioning ducts.

[0002]

[Prior art]

 Conventionally, when connecting an air-conditioning duct to various air-conditioning equipment or connecting ducts to each other, for example, a flange provided at the end of the duct is connected to a flange protruding from the connection port of the equipment via packing. And fasten the bolts through the bolt holes of the flanges, and in the case of ducts, the flanges at the ends of the flanges are joined by packing and fastened with bolts. Flange joints are often used.

[0003]

[Problems to be solved by the device]

 However, in the above flange joint, it takes time and effort to fasten the joined flanges to each other with a plurality of bolts, and in particular, an air conditioner or an air conditioning duct placed at a high position such as in the ceiling of a building is required. When they are connected to each other, there is a risk that the work may take a long time and a fall accident may occur, which is not preferable from the viewpoint of safety.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to efficiently connect ducts to other objects to be connected with one touch and to maintain airtightness. It is to provide a connection structure of ducts that can be performed.

[0005]

[Means for solving problems]

 To achieve the above object, the present invention provides a connected body 16 having a connection opening 14 for connection with an air conditioning duct 12 with a guide holding portion 20 having a communication opening 18 communicating with the connection opening 14. In addition, an elastic packing 28 is provided so as to project toward the center of the connection opening 14 so that an opening 32 smaller than the connection opening 14 is formed at the connection opening 14 of the connected body 16 or at the vicinity thereof. The air-conditioning duct 12 is fixed and inserted into the connection opening 14 of the connected body 16 through the opening 30 of the elastic packing 28, and is fitted and connected. Further, the guide holding portion may be provided inside the connection opening 14 of the connected body 16. The air-conditioning duct 12 has a flexible tubular body 34 and a tubular body 36 that is fixedly connected to one end of the flexible tubular body 34 and inserted into the connection opening 14, and the air passage P side inside the tubular body 36. An attachment / detachment holding device 46 may be provided in the device, and an air flow rate adjuster 48 may be detachably inserted into the attachment / detachment holding device 46.

[0006]

[Action]

 In the connection structure for ducts of the present invention, the connected body is provided with a guide holding portion having a communication opening communicating with the connection opening of the air conditioning duct of the connected body, and the connection opening of the connected body or a vicinity thereof. The elastic packing is provided to form a smaller opening than the connection opening.When the end of the elastic packing is pushed toward the elastic packing to connect the air conditioning duct to the connected object, the elastic packing will The opening is elastically expanded and expanded while the outer surface is held by the guide holding part while being pressed by the end part of the air-conditioner and the guide holding part holds the outer surface, and adheres to the outer peripheral surface of the air-conditioning duct to maintain airtightness. It is a thing. Therefore, the air conditioning duct can be efficiently connected to the connection opening of the connected body with one touch, and the airtightness can be reliably maintained.

[0007]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a duct connecting structure 10 according to an embodiment of the present invention. In the first embodiment shown in FIGS. 1 to 3, the duct connecting structure 10 connects an air conditioning duct 12. The connected body 16 having the connection opening 14 is provided with the guide holding portion 20 having the communication opening 18 communicating with the connection opening 14. In the figure, the connected body 16 comprises a hollow box 16a such as an air-conditioning chamber, the wall 22 of the hollow box 16a is provided with a connection opening 14, and the wall 22 has an inner surface on which foam material or glass fiber is formed. Such a heat insulating material 24 is attached. As shown in FIGS. 1 and 2, the guide holding portion 20 is composed of a flat box lid 26 attached to a wall surface 22 on the outer surface of the connection opening 14, and the flat portion of the flat box lid 26 is connected to the central portion of the mirror surface of the connection opening 14. A communication opening 18 that communicates with is provided. The communication opening 18 guides one end of the air conditioning duct 12 to insert it into the connection port 14. Elastic packing 28 is attached to the inner surface of the flat box lid 26 adjacent to the connection opening 14. The elastic packing 28 is composed of, for example, a thin elastic material body 28a made of silicon rubber and having excellent elasticity and corrosion resistance. The elastic material body 28a is a peripheral edge on the inner surface side of the communication opening 18 of the flat box lid 26. An annular ring 30 is engaged therewith, and an opening 32, which is concentric with the center of the connection opening 14 and has a diameter smaller than that of the connection opening 14, is further provided at the center of the elastic fabric body 28a.

The air-conditioning duct 12 connected to the connected body 16 is, for example, a flexible tubular body 34, and a tube which is fixedly connected to one end of the flexible tubular body 34 and has an outer diameter approximately similar to the inner diameter of the connection opening 14. A body 36 is provided, and a stopper 38 for restricting the insertion width of the body 36 is provided on the outer peripheral surface of the body 36 in a protruding manner. The shape of the connection opening 14, the communication opening 18, or the opening 32 provided in the elastic fabric body 28a is circular in the drawing, but the shape is not limited to this, and the air conditioning duct 12 to be connected is not limited thereto. According to the shape of the cylindrical body 36 at the end of the, the shape is arbitrarily formed such as a quadrangle or a polygon. Therefore, as shown in FIG. 2, when the air conditioning duct 12 is connected to the connection opening 14 of the connected body 16, the tubular body 36 at one end is inserted toward the communication opening 18 of the guide holding portion 20. While the elastic cloth body 28a in 20 is pressed by the end portion of the cylindrical body 36, the opening 32 is expanded and expanded in diameter while being bent as shown in FIG. The cylinder 36 is fitted into the connection opening 14 of the connected body 16 at the time when is engaged with the communication opening 18, and the gap between the cylinder 36 and the communication opening 18 of the guide holding portion 20 is airtight with the elastic fabric body 28a. The air conditioning duct 12 can be connected to the connected body 16 with one touch while maintaining the property. Even if the inner surface of the communication opening 18 and the outer surface of the inserted cylindrical body 36 do not accurately coincide with each other, the gap can be maintained sufficiently airtight by the elastic fabric body 28a, and the outer peripheral surface of the inserted cylindrical body 36 is also maintained. Further, since the elastic fabric body 28a is in close contact with the elastic body 28a in the bent direction, the connected state can be maintained without the tubular body 36 coming off.

4 and 5, in the connection structure 10 for the ducts, an elastic cloth body 28a of an elastic packing 28 is annularly formed on the outer peripheral edge of the communication opening 18 of the flat box lid 26 of the guide holding portion 20. A second embodiment of the present invention is shown secured by a ring 30. Also in this case, when the tubular body 36 at one end of the air conditioning duct 12 is inserted into the connection opening 14 of the connected body 16 from the communication opening 18 of the guide holding portion 20, the elastic cloth body 28a is brought into close contact with the outer peripheral surface of the tubular body 36. The airtightness can be easily maintained. Further, since the elastic cloth body 28a is fastened to the outer surface of the flat box lid 26, the elastic cloth body 28a can be easily attached, and the elastic cloth body 28a may be broken during connection work of the air conditioning duct 12. When it is necessary to replace the elastic fabric body 28a due to deterioration of airtightness during long-term use or the like, the annular ring 30 on the outer surface is removed to pull out the air conditioning duct 12 and replace the elastic fabric body 28a. Can be done easily.

A third embodiment of the present invention is shown in FIGS. 6 and 7, and in the duct connecting structure 10, the guide holding portion 20 is provided inside the connection opening 14 of the connected body 16. It is included. In the figure, a guide holding portion 20 includes a guide cylinder 40 having a communication opening 18 communicating with the connection opening 14 formed in the wall surface 22 of the connected body 16 and a guide cylinder 40 which is provided at one end of the guide cylinder 40. The flange 42 is fixed to the wall surface 22 on the inner side of the connection opening 14, and the elastic cloth body 28 a is sandwiched and locked between the flange 42 and the wall surface 22. In this case, the elastic body 28a is pressed into the guide tube 40 while inserting the tube body 36 at one end of the air conditioning duct 12 into the connection opening 14 exposed on the outer surface of the connected body 16. The elastic fabric body 28a is bent in the insertion direction of the tubular body 36, and the opening 32 at the center is expanded and expanded in diameter at all times to be closely attached to the outer peripheral surface of the tubular body 36, and the outer peripheral surface of the elastic fabric body 28a is guided. The airtightness can be dramatically improved by closely contacting the inner surface of the communication opening 18 of the cylinder 40. Further, when the flat box lid 26 is used as the guide holding portion 20, moisture or the like in the air-conditioning airflow may condense in the flat box lid 26, and the airtightness may be deteriorated due to a change in corrosion and exposed to the outer surface. The flat box lid 26 dislikes the appearance of the connected body 16. However, when the guide holding portion 16 is provided on the inner surface of the connected body 16, corrosion and deterioration of appearance due to condensation of moisture in the air-conditioning airflow. Can be prevented.

8 and 9 showing the fourth embodiment of the present invention, the connected body 16 is composed of a hollow duct 16b, and a connecting structure 10 of ducts for connecting the air conditioning duct 12 to the inner surface of one end of the hollow duct 16b. It is shown. In the drawing, an opening at one end of the hollow duct 16b is a connection opening 14, and an inner surface of the duct continuous with the connection opening 14 is a guide holding portion 20. On the outer surface of the connection opening 14 at one end of the hollow duct 16b, a flange cylinder 44 is fixed to the outer peripheral surface of the hollow duct 16b, and an elastic cloth body 28a is fixed to the flange cylinder 44 by an annular ring 30. The opening 32 at the center of the body 28 has a diameter smaller than that of the connection opening 14 and is arranged at substantially the same position. When the elastic fabric body 28a is inserted into the connection opening 14 while pressing the elastic fabric body 28a with the cylindrical body 36 at one end to connect the air conditioning duct 12 to the hollow duct 16b of the connected body 16, the elastic fabric body 28a is inserted in the insertion direction of the cylindrical body 36. The opening 32 expands and expands in diameter to be in close contact with the outer peripheral surface of the tubular body 36, and the outer peripheral surface of the elastic cloth body 28a is in close contact with the duct holding portion 20 which is the inner surface of the hollow duct 16b. Similarly, the airtightness can be improved. Even if the connecting body 16 is formed as a hollow duct and the connecting structure 10 of the present invention is used to connect the ducts, the ducts can be connected to each other with one-touch operation while maintaining airtightness. Since the elastic cloth body 28a is in close contact with the outer peripheral surface of the cylindrical body 36 while being bent in the insertion direction, the cylindrical body 36 can be maintained without coming off.

10 and 11 show a fifth embodiment of the present invention. In this embodiment, the connected body 16 is a hollow duct 16b, and an opening at one end of the hollow duct 16b is connected to a connection opening 14 The inner surface of the duct is used as the guide holding portion 20, and an inner surface flange 46 is provided at one end of the air conditioning duct 12 which is inserted and connected in the hollow duct 16b, and the elastic cloth body 28a is fixed to the inner surface flange 46 by the annular ring 30 to provide elasticity. The outer edge of the fabric body 28a is projected from the outer peripheral surface of the cylindrical body 36. In this case, when the tubular body 36 at one end of the air conditioning duct 12 is fitted and pushed into the connection opening 14 of the hollow duct 16b of the connected body 16, the outer edge portion of the elastic fabric body 28a moves in the direction opposite to the insertion direction. While being bent, the outer peripheral surface of the elastic fabric body 28a is in close contact with the outer peripheral surface of the tubular body 36, and the outer peripheral surface of the elastic fabric body 28a is in close contact with the duct holding portion 20 which is the inner surface of the hollow duct 16b. The connection state can be maintained efficiently and without the inserted tubular body 36 coming off.

12 to 16 show another embodiment of the duct connecting structure according to the present invention. In this embodiment, for example, the flexible duct of the air conditioning duct 12 shown in the first embodiment of FIG. 2 is used. A detachable holding device 46 is provided in the air flow path P inside the tubular body 36 that is fixedly communicated with one end of the tubular body 34 (at least the connection side to the connected body), and the air flow rate adjustment is provided in the detachable holding device 46. The tool 48 is detachably inserted. In the embodiment, the tubular body 36 is formed in a cylindrical shape, and the attachment / detachment holding device 46 provided inside thereof comprises a plurality of leaf spring bodies 46a attached to appropriate side wall surfaces of the inner periphery of the tubular body 36. One end of this leaf spring body 46a is fixed to the inner wall surface of the tubular body 36, and the other end is bent toward the center of the tubular body according to the depth direction. A recessed portion 50 is formed on which the tool 48 is mounted and elastically locked and held. As shown in FIG. 14, the air flow rate adjusting device 48 is made of a donut-shaped metal or plastic thin plate having a hole in the center, and a plurality of types having different center hole diameters are manufactured. It is inserted from the opening side of 36, and is fitted in the concave portion 50 while advancing against the elastic return force of the attachment / detachment holding device 46. When the air flow rate adjuster 48 should be removed when adjusting the air flow rate, the elastic return force of the attachment / detachment holding device 46 to the air flow rate adjuster 48 must be controlled from the mounting state of the leaf spring body 46a in the recessed portion 50. It is pulled out to the opening side of the tubular body 36, replaced with the air volume adjusting device 48 having a hole shape that should produce a desired air volume, and then inserted again.

Further, for example, as shown in FIGS. 15 and 16, a substantially fan-shaped slit is engraved on a plate body to form a blade portion, and the blade portion is used by being pushed up to take a desired opening degree. According to this, it becomes possible to adjust the air volume with one air volume adjusting tool. As described above, the structure for attaching / detaching the air flow rate adjuster 48 to / from the flexible duct allows the ducts to be efficiently connected to other objects to be connected with a single touch, and moreover, the airtightness can be maintained. The effect can be achieved especially under the structure, and it was not possible with the conventional structure in which multiple parts are bolted while airtightly connecting the connected part and the air conditioning duct etc. It is possible to easily adjust the air volume. Then, it becomes possible to adjust the air volume very easily at each construction site in accordance with the unique air conditioning environment of each site.

Further, as shown in FIGS. 17 and 18, a circular shield plate that shields the air passage of the tubular body 36 may be attached to the air passage adjusting device 48 at a substantially central portion of the air passage.

[0016]

[Effect of device]

 As described above, according to the duct connecting structure according to the first aspect of the present invention, in the connected body having the connection opening for connecting with the air conditioning duct, the guide holding provided with the communication opening communicating with the connection opening. And a resilient packing is projected and fixed toward the central portion of the connection opening so that a smaller opening than the connection opening is formed in the connection opening of the body to be connected or in the vicinity thereof. By inserting one end of the air conditioning duct from the opening of the elastic packing into the connection opening of the connected body and making a fitting connection, the ducts can be efficiently connected to other connected bodies with one touch, and the airtightness is improved. Can hold In addition, ducts can be easily and efficiently connected at high places such as in the ceiling, improving work safety. Further, according to claim 2, by providing the guide holding portion inside the connection opening of the connected body, it is possible to prevent the moisture in the air conditioning airflow from being condensed in the guide holding portion, and the durability of the connection structure. It is possible to improve the above and maintain an excellent aesthetic appearance. Further, according to claim 3, the air flow rate adjusting device provided on the air conditioning duct side can be attached / detached under the structure in which the connected body and the ducts can be easily connected, so the air flow rate corresponding to the situation of each site. Adjustment can be easily performed at the construction site.

[Brief description of drawings]

FIG. 1 is a front view of a connecting structure for ducts according to the present invention.

FIG. 2 is a cross-sectional view of the duct connecting structure of FIG.

FIG. 3 is a cross-sectional view of a connection structure of ducts to which air conditioning ducts are connected.

FIG. 4 is a cross-sectional view of a duct connecting structure in which an elastic packing is provided on an outer surface of a guide holding portion.

FIG. 5 is a cross-sectional view in which an air conditioning duct is connected to the duct connection structure of FIG.

FIG. 6 is a cross-sectional view of a duct connecting structure in which a guide holding portion is provided on the inner surface of a connected body.

FIG. 7 is a cross-sectional view in which an air conditioning duct is connected to the duct connection structure of FIG.

FIG. 8 is a cross-sectional view of a connection structure for ducts provided on an end surface of a connected duct which is a hollow duct.

9 is a cross-sectional view in which another air conditioning duct is connected to the hollow duct of FIG.

FIG. 10 is a cross-sectional view of a duct connecting structure in which elastic packing is provided on the air conditioning duct side for connecting the air conditioning duct to the hollow duct.

11 is a cross-sectional view of a connected state of the hollow duct and the air conditioning duct shown in FIG.

FIG. 12 is a schematic vertical cross-sectional view of an air conditioning duct showing an attachment / detachment holding device and an air volume adjusting tool according to another embodiment of the present invention.

FIG. 13 is a schematic vertical cross-sectional view of a state in which the air flow rate adjuster is fitted into the attachment / detachment holding device.

FIG. 14 is a front view of an air volume adjusting tool.

FIG. 15 is a front view of another air flow rate adjuster.

FIG. 16 is an operation explanatory view of a state in which a blade portion of another air flow rate adjuster is pushed up to form a flow path of wind.

FIG. 17 is a front view of another air flow rate adjuster attached to an air passage.

FIG. 18 is a vertical cross-sectional view of the same attachment.

[Explanation of symbols]

 10 Connection Structure of Ducts 12 Air Conditioning Duct 14 Connection Opening 16 Connected Object 18 Communication Opening 20 Guide Holding Part 28 Elastic Packing 32 Opening 46 Attachment / Detachment Holding Device 48 Air Volume Adjustment Tool

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kensuke Tokunaga 4-1-13 Honmachi, Chuo-ku, Osaka City Incorporated Takenaka Corporation Osaka Main Store (72) Shoji Akazawa 4-1-1 Honmachi, Chuo-ku, Osaka No. 13 Stock Company Takenaka Corporation Osaka Main Store (72) Inventor Shigeaki Okabe 4, 1-1 Honmachi, Chuo-ku, Osaka Stock Company Takenaka Corporation Osaka Main Store (72) Inventor Toshio Kuno Shinoguri, Kasuya-gun, Fukuoka Prefecture Town Koji Wada 1034, 4 Kyoritsu Airtech Co., Ltd. (72) Inventor Yukio Kuno, Shinoguri Town, Kasuya-gun, Fukuoka Prefecture Wada 1034 4 Kyoritsu Airtech Co., Ltd. (72) Inventor Takeshi Ueno, Kasuya-gun, Shinoguri Town, Fukuoka Prefecture Wada 1034 4 Kyoritsu Airtech Co., Ltd. (72) Creator Toriaki Akira Wada 1034 4 Kyoritsu Airtech Co., Ltd. (72) Inventor Yukinori Hanada, 4 Kyoritsu Airtech Co., Ltd. 1034, Wada, Shinoguri-machi, Kasuya-gun, Fukuoka (72) Inventor, Masatoshi Beppu 1034, Wada, Shinoguri-machi, Kasuya-gun, Fukuoka

Claims (3)

[Scope of utility model registration request] 1. A connected body having a connection opening for connecting to an air conditioning duct is provided with a guide holding portion having a communication opening communicating with the connection opening, and the connection opening of the connected body, or a connection opening thereof. An elastic packing is projected and fixed in the direction of the center of the connection opening so that an opening smaller than this connection opening is formed at the near edge, and one end of the air conditioning duct is connected to the connection opening of the connected body from the opening of this elastic packing. A connecting structure for ducts that is inserted and then fitted and connected. 2. The connection structure for ducts according to claim 1, wherein the guide holding portion is provided inside a connection opening of the connected body. 3. The air conditioning duct has a flexible tubular body and a tubular body that is fixedly connected to one end of the flexible tubular body and inserted into the connection opening, and is attached / detached to / from the air passage side inside the tubular body. 3. The duct connecting structure according to claim 1 or 2, wherein a device is provided, and an air volume adjusting tool is detachably inserted into the attachment / detachment holding device.