JP3032367U - Outlet neck - Google Patents

Abstract

(57) Abstract: The present invention relates to an outlet neck, which is disposed at an outlet for blowing air-conditioned gas into a room and is connected to a duct for feeding gas to the outlet. It is an object of the present invention to provide an air outlet neck capable of reducing the amount of gas to be efficiently fed, and of attaching a duct with one touch with a simple structure. SOLUTION: By using an outlet neck 1 whose flow passage cross-sectional area is expanded from a connecting end portion 52 of the duct, a gap between a duct opening and a side wall is secured, and a rapid expansion of the flow passage is eliminated to blow from the duct. The loss to the gas entering the outlet can be reduced,
The gas flow in the outlet can be smoothed to efficiently feed the gas, and the connecting end portion 52 of the duct is press-fitted between the plurality of locking members 12, so that one-touch operation of press-fitting is performed. The duct can be firmly attached to the outlet neck 1 to improve the mounting workability and prevent the duct from falling off.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an outlet neck which is arranged at an outlet for blowing out air-conditioned gas into a room and is connected to a duct for feeding the gas to the outlet.

[0002]

[Prior art]

 A line-type outlet that blows out the air-conditioned gas into the room is provided with an outlet neck for connection with a duct that feeds the gas from the air conditioner to the outlet. Conventionally, such an outlet neck has been shown in FIG. FIG. 5 is a schematic configuration diagram of a conventional outlet neck.

In FIG. 5, the conventional outlet neck 100 is formed of a substantially cylindrical body that is inserted into a connection opening 210 formed in the side wall of a thin hollow line-shaped outlet 200 and protrudes. It A flexible duct 500 for feeding gas is fitted around the outer periphery of the protruding outlet neck 100, and the outer periphery of the end of the fitted flexible duct 500 is tightened by a band 520. It is fixedly installed. In addition to the tightening by the band 520, a method of fixing with an adhesive aluminum tape or screwing with a screw has been adopted.

Further, another conventional outlet neck is shown in FIG. FIG. 6 is an explanatory view of a connection state of another conventional outlet neck. In the figure, the conventional outlet neck 100 is provided with a substantially cylindrical guide holding portion 103 having a communication opening 102 that communicates with a connection opening 210 of the outlet 200, and the outlet 200 is provided. The elastic packing 101 is projected and fixed toward the central portion of the connection opening 210 so that an opening 104 smaller than the connection opening 210 is formed at the connection opening 210 or its peripheral edge. One end of the flexible duct 500 is inserted into the connection opening 210 of the air outlet 200 from the opening 104 of the elastic packing 101, and is fitted and connected. The flexible duct 500 connected to the outlet neck 100 has a flexible tubular body 501 and a connecting end portion 502 which is fixedly connected to one end of the flexible tubular body 501 and is fitted into the connecting opening portion 210. An attachment / detachment holding portion 502a that contacts the guide holding portion 103 is formed on the outer periphery of the end portion 502.

To connect the flexible duct 500 to the outlet neck, when the connecting end 502 is pushed toward the elastic packing 101, the elastic packing 101 is folded in the insertion direction while being pressed by the connecting end 502. The opening 104 is elastically expanded and expanded in diameter while being bent and the outer surface is held by the guide holding portion 103, and is brought into close contact with the outer peripheral surface of the connecting end portion 502 to maintain airtightness. Therefore, the flexible duct 500 can be efficiently connected to the connection opening 210 of the air outlet 200 with one touch, and the airtightness can be reliably maintained.

[0006]

[Problems to be solved by the device]

 Since the conventional air outlet neck is configured as described above, the flexible duct 500 connected to the air outlet 200 through the air outlet neck 100 and the side wall facing the flexible duct 500 have a small distance from the flexible duct 500. Since the supply air directly collides with the opposing side walls, the pressure loss increases, and the cross-sectional area of the flow path from the outlet neck 100 to the outlet 200 abruptly increases, which causes a gas flow. It peels off from the inner wall surface of the air outlet and creates a strong vortex flow around it, causing a rapid increase in flow loss, which becomes a resistance to the gas feed, and the air blowing efficiency is poor. There was a problem that the cost of air-conditioning equipment would have to be increased because the ventilation capacity had to be increased.

When the flexible duct 500 is attached to the conventional outlet neck 100 shown in FIG. 5, the outer side of the flexible duct 500 is tightened with a band 520 or with an adhesive aluminum tape. Since a method of fixing or screwing with a screw was adopted, complicated work had to be performed in a narrow space under the ceiling of the building, and the work of connecting the flexible duct 500 was performed smoothly and reliably. It had a problem that it could not be done. Further, in another conventional outlet neck 100 shown in FIG. 6, an elastic packing 101 is arranged on the inner circumference of the opening hole 104, and the elastic packing 101 holds the connecting end 502 of the flexible duct 500. Since the flexible duct 500 is twisted and mounted in the elastic packing 101 during the connection work, the connection end 502 is detached from the elastic packing 101 very easily and the flexible duct 500 is connected. In addition to the twisting of the connecting end 502, if the pressing force is applied to the connecting end 502 in the vertical / horizontal directions, the elastic packing 101 and the outer peripheral surface of the connecting end 502 are separated from each other, and further pulling force is applied. Since the elastic packing 101 has a weak locking force, there is a problem that the elastic packing 101 easily comes off from the connection opening 210.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an outlet neck that can reduce loss and perform efficient gas feeding, and that can attach a duct with one touch with a simple configuration. To aim.

[0009]

[Means for Solving the Problems]

 The outlet neck according to the present invention is arranged at the connection opening of the outlet, and the outlet neck connecting the connection end of the duct for feeding gas to the connection opening is connected from one opening end side. A neck body that is composed of a tubular body that expands toward the other open end side, and a collar body is formed on the outer periphery of the other open end side of the tubular body, and the inside of the open body is located at multiple points at one open end of the neck body. And a locking member disposed so as to project into the air outlet, the collar portion of the neck body being engaged with the connection opening formed in the side wall of the air outlet and disposed at the air outlet. The connecting end portion of the duct is press-fitted and connected between the plurality of locking members arranged at the open ends of the. As described above, in the present invention, by using the air outlet neck in which the flow passage cross-sectional area is enlarged from the connection end portion of the duct, the space between the duct opening and the side wall is secured, and the duct is prevented from expanding rapidly. Loss to the gas entering the air outlet from the air outlet can be reduced, the gas flow in the air outlet can be smoothed, and the gas can be efficiently fed.At the same time, the connecting ends of the ducts can be press-fitted between the multiple locking members. By doing so, it is possible to firmly attach the duct to the outlet neck by one-touch operation of press fitting, improve the mounting workability, and prevent the duct from falling off.

In addition, the outlet neck according to the present invention is configured such that the locking member is formed by bending a plate-like body having elasticity, and one end is fixed to the one open end, The other end is bent in a hook shape with respect to the one end, and the other end is disposed so as to project to the inside of the opening. As described above, in the present invention, the locking member can be formed of a simple elastic plate, so that the connection structure can be simplified and the manufacturing cost can be reduced.

In addition, in the air outlet neck according to the present invention, if necessary, the neck main body is provided with a plurality of fixing projections on the outer periphery of the one opening end side, and the locking member has one end portion. Is bent into a substantially U shape, and the other end is bent and formed as a hook-shaped protruding piece, and the U-shaped bent portion is engaged with the fixing convex portion. And is provided by engaging the engaging hole with the fixing projection so as to project the protruding piece to the inside of the opening. As described above, in the present invention, the locking member having the engaging holes is provided by engaging the engaging holes with the fixing protrusions formed at a plurality of positions on the outer circumference of the one opening end of the neck body. Since the locking member and the neck body can be easily assembled with a simple structure, the labor of manufacturing can be reduced, and the cost can be largely reduced.

In addition, the blowout neck according to the present invention may have an expanded shape, if necessary, so that the tip of the connecting end portion of the duct press-fitted between the locking members is fitted to the neck body. It is a thing. As described above, in the present invention, the flow of gas from the tip of the connecting end of the duct to the air outlet can be smoothed to reduce the loss of the gas flow, and the air can be efficiently fed.

[0013]

[Embodiment of device]

 (First Embodiment of the Present Invention) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an external perspective view of an outlet neck according to the present embodiment, and FIG. 2 is a sectional view of a connection state between the outlet neck and a flexible duct according to the present embodiment. In each of the above figures, the outlet neck 1 according to the present embodiment has a length sufficiently larger than the connecting end portion 52 of the flexible duct 50 for air supply, and gradually expands from one opening end side to the other opening end side. A neck body 11 which is composed of a tubular body 11a to be opened, and a collar portion 11b is formed on the outer periphery of the other end side of the tubular body 11a, and one end portion of which engages with one open end of the neck body 11. The other end is bent in a hook shape with respect to the one end, and a locking member 12 is provided at each of a plurality of positions so as to project to the inside of the opening of the one opening end. The neck body 11 engages the flange portion 11b with a connection opening portion 21 formed in the side wall of the line-shaped outlet 20 formed as a hollow housing by assembling a plurality of glass boards 22 of heat insulating material. And connect the other open end of the cylindrical body 11a. The connecting end portion 52 of the flexible duct 50 is inserted between the plurality of locking members 12 inserted into the air outlet 20 so as to be positioned in the opening area of the mouth portion 21 and arranged at the one opening end. It is a structure for press-fit connection. The outlet 20 is composed of a glass board 22 made of a heat insulating material. However, in addition to the glass board 22, an iron plate may be assembled by spot welding or bonding to form a casing. it can.

The cylindrical body 11 a forming the neck body 11 has an outer dimension on one side of the open end that is substantially equal to the open area of the connecting end 52 of the flexible duct 50, and the other open end on the side of the air outlet 20. The external dimensions are approximately equal to the opening area of the connection opening 21, and the inner diameter is from the one opening end side connecting the connection end 52 of the flexible duct 50 to the other opening end side attached to the connection opening 21. It is a structure that is gradually expanded and formed. In addition, a plurality of fixing protrusions 11c are formed so as to project from the outer periphery of the cylindrical body 11a on one opening end side, and a flange portion 11b is formed on the other opening end side. 11b is configured to be tightly locked along the inner side wall of the connection opening 21 of the air outlet 20.

The locking member 12 includes a fixed base portion 12a whose one end is bent and formed into a substantially U shape, and a connecting projection 12b which is formed by bending the other end into a hook shape. The U-shaped bent portion of the fixed base portion 12a is provided with an engagement hole 12c that engages with the fixed convex portion 11c of the neck body 11. The locking member 12 is configured such that the engaging hole 12c and the fixed convex portion 11c are engaged with the neck body 11 and mounted, and the connecting protrusion 12b is projected to the inside of the opening of the neck body 11.

On the other hand, the flexible duct 50 connected to the outlet neck 1 has a flexible tubular body 51 to which a connecting end 52 is attached. The connecting end portion 52 is formed so as to face a step portion 52a formed in a shape that fits the locking member 12 on one end side and one opening end surface of the neck body 10 on the other end side. The pressure step portion 52b is provided, and the tip on the one end side is fitted to the outlet neck 1 so as to make the gas flow smooth, thereby forming an expanded shape.

Next, the operation of connecting the flexible duct to the outlet neck and the flow of the airflow to the outlet will be described based on the above configuration. First, regarding the attachment of the outlet neck 1 to the outlet 20 according to the present embodiment, of the two glass boards 22 forming the side wall of the outlet 20 in which a plurality of glass boards 22 are assembled and hermetically formed. A circular opening is formed substantially in the center of one glass board 22 to form a connection opening 21, and the neck body 11 is mounted in the opening area of the connection opening 21. When mounting the neck body 11, since the collar portion 11b is fixed to the inner end portion of the connection opening portion 21 in a close contact state, the neck body 11 does not project to the inside of the air outlet 20 and the air outlet 20 is not attached. It can also prevent obstruction of the wind flow inside.

The engaging holes 12c of the locking member 12 are fitted into the fixed convex portions 11c formed at four locations on the outer circumference of the cylindrical body 11a of the neck body 11 mounted in the connection opening portion 21, and four fixing protrusions 11c are fitted. Attach the locking member 12 to the neck body 11.

After that, when the flexible duct 50 is connected to the outlet neck 1 of the outlet 20 which is fixedly suspended at a predetermined installation location, the flexible duct 50 is arranged at one opening end of the outlet neck 1. The connecting end portion 52 of the flexible duct 50 is pressed and inserted between the four locking members 12. By pressing and inserting the connecting end portion 52, the connecting protrusions 12b of the four locking members 12 projecting inside the opening of the neck body 11 are expanded outward, and the connecting protrusions 12b of the locking member 12 are connected to each other. The stepped portion 52a of 52 can be fitted and fixedly locked. A packing 53 is attached to the pressing step portion 52b of the connecting end portion 52, and the packing 53 is formed between the pressing step portion 52b of the connecting end portion 52 of the flexible duct 50 and one opening end surface of the neck body 11. In the meantime, a state of being pressed and accommodated is provided, and the flexible duct 50 can be attached to the outlet neck 1 in a sealed state. In this way, the connection can be made only by the one-touch operation of pressing the connecting end portion 52 of the flexible duct 50 against the outlet neck 1.

When air is supplied from the flexible duct 50 connected to the air outlet 20 in this way, the gas flow from the connecting end portion 52 of the flexible duct 50 spreads out smoothly at the air outlet neck 1. The air enters the air outlet 20 and the air can be efficiently fed with little loss.

Second Embodiment of the Present Invention A second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view of a connection state between the outlet neck and the flexible duct according to the present embodiment. In each of the drawings, the outlet neck 1 according to the present embodiment is provided with a neck body 11 and a locking member 13 as in the first embodiment, and is locked to one open end of the neck body 11. This is a configuration having a mounting structure at one end of the material 13 as a different portion.

The locking member 13 has a fixed base portion 13 a formed by bending one end side of a metal plate-like body having elasticity into a substantially L-shape, and a collar-shaped portion at one opening end of the neck body 11. The connection projection 13b is formed so as to be fixed by a fixing screw 13c and bent at the other end of the plate-like member into a hook shape so as to project inside the opening of the neck body 11. . The locking member 13 can be formed by injection molding of a synthetic resin having elasticity, in addition to bending and forming a metal plate-like body having elasticity.

The air outlet 20 is formed as a hollow housing by attaching an iron plate 23 by spot welding instead of the glass board 22 of heat insulating material. The outlet neck 1 is fixed to the outlet 20 by engaging the flange 11b of the neck body 11 with the connection opening 21 formed in the side wall of the outlet 20 as in the case of the first embodiment. It is a configuration.

Next, the operation of connecting the flexible duct to the outlet neck will be described based on the above configuration. First, regarding the attachment of the outlet neck 1 to the outlet 20 according to the present embodiment, the neck body 11 is attached to the inside of the opening area of the connection opening 21 of the outlet 20 as in the case of the first embodiment. The fixed base portions 13a of the respective locking members 13 are fixed and attached by the fixing screws 13c at four positions of the collar-shaped portion at one open end of the neck body 11. Further, when the flexible duct 50 is connected to the outlet neck 1 of the outlet 20 which is fixedly supported at the installation location, the flexible duct 50 is connected between the locking members 13 in the same manner as in the first embodiment. The end portion 52 is pushed and inserted, the connecting projection 13b of the locking member 13 is fitted into the step portion 52a of the connecting end portion 52, and the flexible duct 50 can be attached to the outlet neck 1 in a sealed state. When air is supplied from the connected flexible duct 50, the flow of gas emitted from the connecting end portion 52 of the flexible duct 50 spreads open at the outlet neck 1 and smoothly enters the outlet 20, resulting in loss. A small and efficient gas feed can be performed.

In the outlet neck according to the above-described embodiment, the fixed base portion 13a of the locking member 13 is formed by bending into an L shape. However, as shown in FIG. 4, the fixed base portion 13a is formed. Is bent in a substantially U-shape, and a curved locking recess 13d is formed between the substantially U-shaped fixed base portion 13a and the fixed protrusion 13b, and the locking screw is fixed to the inside of the curved recess groove of the locking recess 13d. Alternatively, the tip of 13c may be projected. In the embodiment shown in FIG. 4 configured in this way, the fixed base portion 13a is engaged with one open end of the neck body 11, and the fixing screw 13c is tightened in the radial direction of the neck body 11 to engage the tip portion. It will be fixed by projecting it into the curved groove of the recess 13d.

Further, in the outlet necks according to the first and second embodiments, the neck body 11 is configured to be gradually expanded from one opening end side to the other opening end side. However, in order to prevent the connecting protrusions 12b and 13b of the locking members 12 and 13 from coming into contact with the inner wall of the neck body 11 when the connecting end portion 52 of the flexible duct 50 is connected, the neck body 11 is expanded to have a stepped shape. As a result, a configuration may be adopted in which one opening end side substantially equal to the opening region of the connection end portion 52 is expanded on the other opening end side.

Further, although the outlet necks according to the first and second embodiments are configured to be arranged in the line outlet 20, the present invention is not limited to the line type, and may be an anemo type or a pan type. In addition to the configuration for arranging it at the air outlet, it is also possible to arrange for duct connection to a chamber or the like other than the air outlet.

[0028]

[Effect of device]

 As described above, in the present invention, by using the outlet neck whose flow passage cross-sectional area is expanded from the connecting end of the duct, the space between the duct opening and the side wall is secured and the rapid expansion of the flow passage is eliminated. The loss of gas entering the outlet from the duct can be reduced, the gas flow in the outlet can be smoothed and gas can be efficiently fed, and the connecting end of the duct is press-fitted between a plurality of locking members. Therefore, the one-touch operation of press fitting firmly attaches the duct to the outlet neck, improves the mounting workability, and prevents the duct from falling off. Further, in the present invention, since the locking member can be formed of a simple elastic plate, the connection structure can be simplified and the manufacturing cost can be reduced. Further, according to the present invention, the locking member having the engaging hole is disposed by engaging the engaging hole with the fixed convex portions formed at a plurality of outer circumferences of one opening end of the neck body. Therefore, it is possible to easily assemble the locking member and the neck body with a simple structure, which can reduce the manufacturing labor and can significantly reduce the cost. Further, in the present invention, there is an effect that the flow of gas from the tip of the connecting end of the duct to the air outlet can be smoothed to reduce the loss of the gas flow, and the gas can be efficiently fed.

[Brief description of drawings]

FIG. 1 is an external perspective view of an outlet neck according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the connection state between the outlet neck and the flexible duct according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of a connection state between an outlet neck and a flexible duct according to a second embodiment of the present invention.

FIG. 4 is an enlarged sectional view of a main part of an outlet neck according to another embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a conventional outlet neck.

FIG. 6 is a schematic configuration diagram of another conventional outlet neck.

[Explanation of symbols]

 1, 100 Blowout neck 11 Neck body 11a Cylinder 11b Collar part 11c Fixed convex part 12, 13 Locking material 12a, 13a Fixed base part 12b, 13b Connecting projection part 12c Engagement hole 13c Fixing screw 13d Locking concave part 20, 200 Outlet 21, 210 Connection opening 22 Glass board 23 Iron plate 50, 500 Flexible duct 51, 501 Flexible cylinder 52, 502 Connection end 52a Step 52b Push step 53 Packing 101 Elastic packing 102 Communication opening 103 Guide holder 104 opening 502a attachment / detachment holding part 520 band

Claims (4)

[Scope of utility model registration request] 1. A blowout port neck, which is disposed in a connection opening portion of a blowout port and connects a connection end portion of a duct for feeding gas to the connection opening portion, from one open end side to another open end side. A neck body having a flange portion formed on the outer circumference of the other side of the opening end of the cylinder body, and a neck body that expands toward the inside of the neck body. A locking member to be disposed, the collar portion of the neck body is engaged with a connection opening formed in a side wall of the air outlet, and is disposed at the air outlet, and is disposed at the one opening end. An outlet neck, wherein the connecting end portion of the duct is press-fitted between a plurality of locking members. 2. The outlet neck according to claim 1, wherein the locking member is formed by bending a plate-like body having elasticity, and one end of the locking member is fixed to the one open end. , The other end is bent in a hook shape with respect to the one end,
An outlet neck, wherein the other end is arranged so as to project to the inside of the opening. 3. The outlet neck according to claim 1 or 2, wherein the neck main body is provided with projecting fixing projections at a plurality of locations on the outer circumference on the one opening end side, and the locking member is provided. A member having one end bent in a substantially U shape and the other end bent as a hook-shaped protruding piece, and engaging with the fixed convex portion in the U-shaped bent portion. A blow-out neck, wherein a fitting hole is bored, and the fixing projection is provided so as to engage the engaging hole so as to project the projection piece toward the inside of the opening. 4. The outlet neck according to any one of claims 1 to 3, wherein the tip of the connecting end portion of the duct press-fitted between the locking members is expanded to fit the neck body. An outlet neck characterized by its shape.