JP2015021660A - Air control port device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air control port device capable of adjusting and controlling positively either an air blowing amount or an air sucking amount in respect to an indoor space while capable of acknowledging its adjustment degree and also capable of restricting its mounting cost.SOLUTION: When a shutter part 40 supported from below by an adjustment threaded shaft 30 within an air control port main body 10 exposes an adjustment threaded shaft head part 32 in such a way that it can be operated from above and the adjustment threaded shaft 30 threadably engaged with the air control port main body 10 is operated with an operating instrument to cause it to be threadably moved, the shutter part 40 is moved up and down together with the adjustment threaded shaft head part 32, thereby a degree of communication between an under-floor opening part 13 and an area above the shutter part 40 in the inner space of the air control port main body and communicated with the indoor space through a through-pass hole of a face part 20 is changed, so that it is possible to change positively an amount of flowing-in or flowing-out air in respect to the under-floor opening part 13 through an upward or downward motion of the shutter 40 on the basis of the thread motion of the adjustment threaded shaft 30 and to adjust appropriately either an air blowing amount into the indoor space or an air sucking amount from the indoor space.

Description

  The present invention relates to an air vent device that is an air outlet or a suction port provided on an upper floor of a double floor such as a free access floor, and more particularly to a small device disposed in an opening for a facility of a floor panel.

When air-control ports such as air outlets and air inlets are provided on the floor of an indoor space, an air volume adjusting mechanism for adjusting the air blow-out amount and the air intake amount is often provided together.
In that case, as the air volume adjusting mechanism, a cylindrical shutter having a plurality of holes on the peripheral side surface is rotated with respect to the main casing of the cylindrical air control port having a plurality of holes on the peripheral side surface. , A mechanism for adjusting the size of the overlapping range of the holes next to each other, and a disk having a plurality of holes provided at the bottom of the main body of the air vent, and a disk having a plurality of holes adjacent thereto A mechanism for adjusting the size of the overlapping range of the holes in the vertical direction has been generally employed.
An example of the air volume adjusting mechanism in such a conventional air-control device is described in Japanese Patent Laid-Open No. 10-306942.

Japanese Patent Laid-Open No. 10-306942

  The conventional air vent device has the configuration shown in the above-mentioned patent document, and such a floor-installed air vent device exists on the floor where human hands can easily reach. It was possible to change the blow-out amount or the suction amount by operating the air volume adjusting mechanism relatively easily using, for example. However, as shown in the above-mentioned patent document, the conventional air volume adjustment mechanism rotates a cylindrical shutter and a disc, and these mechanisms are hidden under the floor and cannot be seen from the indoor side. It is difficult to determine how much the air volume adjustment state has been achieved, and usually there is a problem that the adjustment operability is not good other than grasping the adjustment degree from the blowout amount and the suction amount obtained as a result of the adjustment operation. It was.

  The present invention has been made to solve the above-described problems, and provides an air vent device that can reliably adjust and control the amount of air blowing or sucking into an indoor space while making it possible to grasp the degree of adjustment, and can reduce installation costs. The purpose is to do.

  The air-control opening device according to the present invention has an opening facing the indoor space to be air-conditioned and is disposed on the floor of the indoor space, and conditioned air supplied from below the floor is directed from the opening to the indoor space side. In the air control port device that blows out or sucks the air in the indoor space to the lower floor side through the opening, formed by a substantially hollow box-like body, disposed in the opening for equipment in the floor panel forming a double floor, One or a plurality of under floor openings that communicate with a space under the floor panel or a duct installed under the floor panel are provided in the side surface portion, and an indoor side opening that communicates with the indoor space is provided in the upper part. A plurality of through-holes as the opening are formed in the central portion, and are disposed on the upper side of the air-control mouth body in a state where the holes communicate with the indoor-side opening of the air-control-port body. Screw into the substantially frame-shaped face part and the lower part of the air restriction body. The adjustment screw shaft that is arranged in a state of projecting upward in the air restriction body, and the shape that substantially matches the cross-sectional shape of the internal space of the air restriction body can be moved up and down in the air restriction body. A substantially plate-like shutter portion disposed, and the head of the adjustment screw shaft is in contact with the lower portion of the shutter portion while being allowed to rotate relative to the shutter portion, and supports the shutter portion from below. At least a part of the upper surface of the head is exposed through a through hole provided in the head, and a predetermined operating instrument can be engaged with the exposed portion from above, and the adjustment screw shaft is engaged with the exposed portion of the head. It is screwed by the operation of the combined operation tool to change the vertical position of the shutter portion on the upper side of the head within the air-control mouth body.

  As described above, according to the present invention, the shutter portion supported from below by the adjustment screw shaft in the air restriction port body exposes the adjustment screw shaft head from above so that it can be screwed into the air restriction port body. When the adjustment screw shaft is operated and screwed with the operation tool, the shutter portion moves up and down together with the head of the adjustment screw shaft, and the relative position of the shutter portion with respect to the lower floor opening portion is changed to change the lower floor opening portion. And the upper and lower portions of the shutter portion based on the screwing of the adjusting screw shaft by changing the degree of communication between the air passage opening body internal space and the region communicating with the indoor space through the face portion hole above the shutter portion. The amount of air flowing into or out of the underfloor opening by movement can be reliably changed, and the amount of air blown into the room or the amount of air sucked from the room can be adjusted appropriately. Further, when adjusting the vertical position of the shutter part, the head of the adjusting screw shaft to be screwed moves up and down together with the shutter part, so that the height of the operating tool is adjusted according to the head position of the adjusting screw shaft. The position of the shutter part and the opening degree of the underfloor opening can be determined from the state, and the operation and adjustment can be appropriately performed after grasping the adjustment of the air blowing amount or the suction amount with respect to the indoor space.

  Further, in the air restriction port device according to the present invention, the shutter portion is formed with a side wall portion having a predetermined height projecting upward and / or downward in the peripheral portion, if necessary, and the internal space of the air restriction port main body. The cross-sectional shape of the shutter and the plan view shape of the shutter portion are a predetermined symmetrical shape, and the center position of the adjustment screw shaft with respect to the shutter portion is arranged to coincide with the center of the symmetrical shape of the shutter portion. Even when the top and the bottom are replaced and disposed in the air restriction body, the head of the adjustment screw shaft portion is exposed to be operable by the operation tool at the through hole position of the shutter portion.

  Thus, according to the present invention, the protruding side wall portion is formed at the peripheral edge portion of the shutter portion, and the shutter portion can be disposed in the air-control opening body even when the shutter portion is inverted, and the adjusting screw shaft. It is shaped so that it can move up and down with the head, and there is a side wall depending on whether the top position of the shutter part is normal or reversed when the relative position of the top of the shutter part with respect to the head of the adjustment screw shaft Therefore, even if the adjustment screw shaft head is at the same position, the shutter part is positioned above the underfloor opening and the shutter part in the normal state and the upside down state. The size of the communication path with the interior space area that communicates with the indoor side will change, and the head of the adjustment screw shaft will be selected appropriately and the head of the adjustment screw shaft will be operated, so that there are two types of characteristics. Side opening and inside Adjustment of the communication state can, can be performed flexibly corresponding to the adjustment of blowing amount or intake amount of air by the situation of the various air-conditioning. In addition to the up and down movement of the shutter unit based on the operation of the adjusting screw shaft, if the top and bottom of the shutter unit is reversed, adjustment can be made to increase or decrease the air blowing amount or suction amount by a predetermined amount. , It is only necessary to change the direction of the shutter portion, and it is possible to omit the labor and time for moving the shutter portion by screwing the adjusting screw shaft using the operation tool, and the adjustment can be performed simply and quickly.

  Further, in the air restriction port device according to the present invention, if necessary, at least the hole above the head of the adjustment screw shaft in the hole of the face portion passes through the hole inside the air restriction port body of the operating instrument. It is sized so as to allow the movement associated with the insertion and the adjustment screw shaft operation of the operating instrument.

  As described above, according to the present invention, the hole positioned at least above the adjustment screw shaft in the face portion has a size allowing the insertion of the operation tool and the movement of the operation tool based on the operation on the adjustment screw shaft. The adjustment screw shaft can be operated with the operation tool inserted through the hole in the face part, so that the adjustment of the air blowing amount or the suction amount by operating the adjustment screw shaft and moving the shutter part up and down is possible. Therefore, the operation can be performed without removing the face part, and the trouble of removing the face part for the adjustment can be saved, and the operability is improved. It can be discriminated from the position, and the adjustment of the air blowing amount or the suction amount can be grasped without any problem.

It is the top view and front view of the air-control mouth apparatus which concern on one Embodiment of this invention. It is a bottom view of the air vent apparatus which concerns on one Embodiment of this invention. FIG. 5 is a schematic explanatory diagram of a removed state of a face and a shutter unit in the air restriction port device according to the embodiment of the present invention. It is AA sectional drawing and BB sectional drawing of FIG. It is each explanatory drawing of the lower limit position arrangement | positioning state of a shutter part and the underfloor side opening part obstruction | occlusion state in the air vent apparatus which concerns on one Embodiment of this invention. It is each explanatory drawing of the lower limit position arrangement | positioning state and upper limit position arrangement | positioning state of the shutter part which reversed the top and bottom in the air vent apparatus which concerns on one Embodiment of this invention. It is a schematic shape explanatory drawing of the adjustment screw axis head and shutter part penetration hole in the air-control mouth device concerning other embodiments of the present invention. It is a front view of the air vent apparatus which concerns on other embodiment of this invention.

Hereinafter, an air inlet apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. In the present embodiment, an example will be described in which the air restriction device is used as a suction port.
In each of the drawings, the air restriction device 1 according to the present embodiment is inserted and disposed in the facility openings 61 of the floor panel 60 that is disposed in large numbers as a free access floor (double floor) above the floor base. A box-shaped air restriction body 10, a face portion 20 which is disposed on the air pressure body 10 and forms a part of the floor, and is screwed into the lower portion of the air supply body 10 to be inside the air restriction body. And a substantially plate-like shutter portion 40 that is engaged with the upper portion of the adjustment screw shaft 30 and is arranged to be movable up and down inside the air restriction port body 10. It is.

  The air restriction main body 10 is formed as a substantially cubic box-like body having an upper opening, and an upper end portion is extended outwardly in a bowl shape, and the upper end portion forms a floor panel 60 that forms an upper floor 62. It is the structure which is mounted in the opening 61 for installations, and is mounted in the peripheral part of the opening 61 for installations. The facility opening 61 of the floor panel 60 is a well-known substantially square opening for installation of facilities such as an outlet, which is generated by facing the notch portions at the end of the floor panel. It is almost constant (each side is around 90 mm).

The upper part of the air restriction port main body 10 is configured to be fitted with the face part 20, which is a separate body from the air restriction port main body 10, as the indoor side opening 12 having a substantially square opening cross section.
In addition, the peripheral side surface portion of the lower portion of the air control port main body 10 has a substantially rectangular shape in which the space inside the air control port main body having a substantially square opening cross section and the under floor space under the floor panel or the under floor duct provided under the floor panel are communicated. A plurality of shaped underfloor side openings 13 are formed. Furthermore, the shutter part 30 is arrange | positioned in the air control port main body 10 so that a vertical movement is possible along the surrounding side surface.

  The air restriction port body 10 sucks air in the indoor space through a hole in the face portion 20 disposed on the upper side of the air restriction port body 10, and sends this air to the underfloor space that forms an air passage through the underfloor side opening 13. It is a mechanism to issue.

  On the other hand, when the air restriction body 10 is used as the air outlet, the conditioned air is supplied through the underfloor opening 13 from the underfloor space or the underfloor duct serving as the conditioned air supply unit. This conditioned air is sent out to the indoor space through the hole 21 of the face part 20 on the upper side of the air-control opening body 10.

  The face portion 20 has a rectangular frame shape in which a plurality of holes 21 are formed in a vertically penetrating state, and a thick central portion is detachably fitted to the indoor side opening portion 12 of the air restriction port body 10. It is a configuration to be provided. The central portion of the face portion 20 is formed in a lattice shape, and a plurality of holes 21 having a substantially rectangular cross-sectional shape of the same size are arranged vertically and horizontally.

  Further, a stepped portion 22 is formed on the lower surface side of the peripheral edge portion of the face portion 20 so as to be in contact with the bowl-shaped upper end portion of the air restriction body 10, and the upper surface of the face portion 20 is substantially the same as the surrounding floor finish surface. In addition to being positioned at a height, a force applied to the face portion 20 from above is transmitted to the floor panel 60 through the upper end portion of the air restriction port body 10 so that the face portion 20 can be supported without displacement.

  The adjustment screw shaft 30 includes a screw portion 31 that is screwed into the center of the bottom portion of the air restriction body 10 and a head portion 32 that can engage with an end portion of an operating instrument (for example, a screwdriver) 50. The screw 50 is screwed to the air inlet main body 10 by an operation from the indoor side by the operation instrument 50 partially inserted into the air outlet main body 10 to change the positional relationship with respect to the bottom of the air outlet main body 10, The vertical position of the shutter part 40 supported by this by changing the vertical position of the part 32 can be adjusted. The adjustment screw shaft 30 sets the length of the screw portion 31 so that the screwing range of the adjustment screw shaft 30 can be moved from a state in which the shutter portion 40 is close to the lower side of the face portion 20 to a state in which the shutter portion 40 is close to the bottom surface of the air restriction port body 10. Has been. An engagement hole 33 for engaging the end of the operating instrument 50 is provided on the top surface of the head 32 of the adjustment screw shaft 30.

  The head 32 of the adjustment screw shaft 30 is positioned directly below the central hole 21 of the face portion 20, and the adjustment screw shaft is operated by the operating instrument 50 inserted through the central hole 21 of the face portion 20. 30 can be operated. Note that the central hole 21 of the face portion 20 allows any movement of the operating instrument 50 through the hole into the air restriction body 10 and the adjustment screw shaft operation of the operating instrument 50. The operating instrument 50 can be operated without any problem even when the hole 21 is passed.

  The adjustment screw shaft 30 is operated using the operation instrument 50 or the like from the indoor side through the indoor side opening 12 of the air restriction port body 10 in a state where the face portion 20 is removed from the air restriction body 10. Then, the air inlet 10 may be screwed.

The shutter portion 40 is formed of a substantially plate-like body whose plan view shape is a symmetric substantially rectangular shape similar to the cross-sectional shape of the space inside the air restriction port main body. It is the structure arrange | positioned in the air-control mouth main body 10 that it can move up and down, making a peripheral part adjoin to. The shutter unit 40 changes the communication state of the underfloor side opening 13 on the circumferential side surface of the air control port body 10 to the internal space of the air control port body 10 above the shutter unit 40, and the underfloor space from the inside of the air control port body 10. This adjusts the amount of air movement to the air, that is, the amount of air suction.
A side wall 41 having a predetermined height projecting upward is formed on the peripheral edge of the shutter unit 40, and the side wall 41 is also in a state of being close to the inner peripheral part of each side surface of the air restriction port body 10.

  In addition, the shutter portion 40 has a through hole 42 formed in the central portion thereof, and a part of the head 32 of the adjustment screw shaft 30 is fitted into the through hole 42 from below, and a lower portion around the through hole 42 is provided. The other portion of the head 32 of the adjustment screw shaft 30 is brought into contact with the side, and is supported by the head 32 from below, and the shutter portion 40 of the head 32 accompanying the screwing of the adjustment screw shaft 30. This is a mechanism that moves up and down in the air restriction port body 10 in accordance with the vertical movement of the head 32 while allowing relative rotation with respect to the vertical direction.

  The through hole 42 in the center of the shutter portion 40 is in a state in which the engagement hole 33 in the head 32 of the adjustment screw shaft 30 is exposed upward, and the operation tool is inserted into the exposed engagement hole 33 in the exposed head. The adjustment screw shaft 30 can be operated by engaging 50 end portions.

  The head 32 of the adjustment screw shaft 30 is in contact with the lower side of the periphery of the through hole 42 in the center of the shutter portion 40 and is in a state of closing the through hole 42 from below together with the fitting portion to the through hole 42. The structure is such that air does not easily flow between the upper and lower spaces sandwiching the shutter portion 40 in the air restriction body 10 through the through-hole 42, and the lower floor side opening 13 and the shutter are moved by the vertical movement of the shutter portion 40. When changing the communication state with the space area on the upper side of the section, it is possible to appropriately prevent the leakage of air to the underfloor space from other than the upper side or the side of the shutter section, and appropriately adjust the suction amount.

  The shutter portion 40 has a rectangular shape in plan view, and the through hole 42 into which a part of the adjustment screw shaft 30 is fitted is also arranged to coincide with the center of the shutter portion 40. Even when the top and bottom of the portion 40 is replaced, the shutter portion 40 is disposed in the air restriction body 10, and the shutter portion 40 is supported by the head portion 32 while a part of the adjustment screw shaft 30 is fitted in the through hole 42. It is a mechanism that can obtain the state to be.

  The shutter portion 40 is formed with a side wall portion 41 that protrudes upward only at the peripheral portion thereof, so that when the top and bottom of the shutter portion 40 are replaced, the shutter portion 40 is supported by the adjustment screw shaft head 32. The upper position of the shutter unit 40 with respect to the adjustment screw shaft head 32 changes from the normal state to the original state in the arrangement state in the air restriction body. In other words, by setting the orientation of the shutter unit 40 with respect to the adjustment screw shaft 30, the upper end position of the shutter unit 40 with respect to the adjustment screw shaft head 32 can be generated in two ways.

  Next, the adjustment state of the air intake amount in the air restriction port device based on the above configuration will be described. As a premise, while conditioned air is separately blown into the indoor space, the indoor air is sucked into the air vent device and discharged from the indoor space, and the pressure in the indoor space is constantly kept substantially constant. To do.

  Due to suction from the underfloor space side below the floor panel 60, the indoor air travels vertically downward through the holes 21 of the face portion 20 to reach the inside of the air restriction body 10, and proceeds sideways above the shutter portion 30. The direction is changed to pass through the underfloor side opening 13 on the underfloor space side in the air-control mouth body 10 and proceed to the underfloor space.

  When adjusting the intake amount of room air, the end of the operating instrument 50 is engaged with the head of the adjustment screw shaft 30 through the hole 21 in the center of the face portion 20, and the adjustment screw shaft 30 is attached to the air inlet body 10. The shutter 40 is moved up and down by screwing.

  Of the underfloor side opening 13, the size of the opening area that communicates the interior space of the air inlet 10 on the upper side of the shutter part 40 and the underfloor space is adjusted by the vertical position of the shutter part 40. Then, the amount of air that is sucked into the air restriction main body 10 from the indoor space and proceeds to the underfloor space is determined.

  When the shutter portion 40 is moved upward and the opening area above the shutter portion 40 of the underfloor side opening portion 13 is reduced, the amount of air sucked is reduced by the amount that the air passage amount is suppressed. When the shutter unit 40 is raised and brought close to the face unit 20 to some extent, the upper end position of the shutter unit 40 reaches the upper edge of the underfloor opening 13, and the underfloor opening 13 has an opening area above the shutter unit 40. (See FIG. 5B). As a result, the communication between the underfloor side opening 13 and the internal space above the shutter portion occurs only in a slight gap around the shutter portion, and the amount of air passing is small, but the air is still sucked. It will be. For this reason, in order to reliably suppress the suction, if the shutter unit 40 is raised to the upper movement limit position where the upper end of the shutter unit 40 is close to the lower part of the face unit 20 and the fully closed state in which communication is substantially cut off, Will stop.

  On the other hand, if the shutter part 40 is moved downward and the opening area above the shutter part 40 of the underfloor side opening part 13 is increased, the amount of air sucked increases as the amount of air passing increases. When the shutter portion 40 is lowered to a downward movement limit position where the head portion 32 or the lower portion of the shutter portion 40 of the adjustment screw shaft 30 is close to the bottom portion of the air restriction body 10, the shutter portion 40 is located above the shutter portion 40 of the underfloor side opening portion 13. The maximum opening area can be set within the adjustable range.

  While the adjustment screw shaft 30 is screwed by operating the operation tool 50 to move the shutter part 40 up and down, the position of the shutter part 40 is grasped from the operation position of the operation tool 50 based on the position of the screw shaft head 32. If the direction of the shutter unit 40 is known, the size of the opening area of the underfloor side opening 13 above the shutter unit 40 can also be determined, and the approximate amount of suction can be estimated.

  In addition, by changing the direction of the shutter unit 40 in the top-and-bottom direction and arranging the shutter unit 40 in the air-control mouth main body 10, the upper end position of the shutter unit 40 with respect to the adjustment screw shaft head 32 can be generated in two ways. When the upper end position of the portion 40 is changed, the adjustment of the air suction amount by screwing the adjustment screw shaft 30 is different between the case where the top and bottom of the shutter portion 40 is set to the normal direction and the case where it is reversed. It will be a thing.

  Specifically, with respect to the case where the shutter part 40 with the side wall part 41 positioned on the upper side is in the normal direction, the top and bottom of the shutter part 40 is reversed so that the side wall part 41 protrudes downward. In this case (see FIG. 6), even if the position of the adjustment screw shaft head portion 32 is the same, the upper end of the shutter portion 40 is lowered and the upper portion of the underfloor side opening portion 13 above the shutter portion 40 because there is no side wall portion on the upper side of the shutter portion 40. The amount of air suction increases, for example, the opening area becomes larger than usual.

  When the shutter unit 40 is moved upward in order to reduce the amount of air sucked in, there is no side wall on the upper side of the shutter unit 40. Therefore, the adjustment screw shaft in a state where the upper end position of the shutter unit 40 is close to the lower part of the face unit 20 The head 32 is positioned above the normal position (see FIG. 6B), and the communication between the underfloor side opening 13 and the indoor space is cut off because the shutter portion 40 is close to the lower portion of the face portion 20. Fully closed state.

  In addition, the maximum amount of indoor air that can be obtained by lowering the shutter unit 40 to the lower limit of movement (see FIG. 6A) is the lower floor side opening because there is no side wall on the upper side of the shutter unit 40. Since the opening area on the upper side of the thirteen shutter portions 40 widens, it can be made larger than usual.

  Thus, when the top and bottom of the shutter unit 40 is reversed, the suction amount differs from the normal direction of the shutter unit 40 even if the position of the adjustment screw shaft head 32 is the same. The upper end position of the shutter portion 40 with respect to the portion 32 is lower than in the normal case, and in order to obtain a fully closed state, it is necessary to screw the adjustment screw shaft 30 more and move the head to the upper side. For example, the range in which the adjustment screw shaft 30 is screwed and moved is enlarged, but the adjustment range of the air suction amount is also increased, and this is suitable when it is desired to adjust the suction amount in a wider range.

  In order to actually change the top / bottom direction of the shutter unit 40, the shutter unit 40 in the air-control port body 10 is once removed from the air-control port body 10 through the indoor-side opening 12 with the face unit 20 removed (see FIG. 3), it may be inserted into the air restriction port main body 10 again with the top and bottom reversed, and the through hole 42 and the head of the adjusting screw shaft 30 may be engaged.

  As described above, in the air restriction port device according to the present embodiment, the shutter unit 40 supported from below by the adjustment screw shaft 30 in the air restriction port body 10 can operate the adjustment screw shaft head 32 from above. When the adjustment screw shaft 30 that is exposed and screwed into the air restriction body 10 is operated and screwed with the operation tool 50, the shutter portion 40 moves up and down together with the adjustment screw shaft head 32, and the lower floor side The relative position of the shutter part 40 with respect to the opening part 13 is changed, and the underfloor side opening part 13 and the area communicating with the indoor space through the hole 21 of the face part 20 above the shutter part 40 in the inner space of the air-control opening main body. By changing the degree of communication, the amount of air flowing out from the underfloor side opening 13 by the up and down movement of the shutter unit 40 based on the screwing of the adjusting screw shaft 30 is reliably changed, and the amount of air sucked from the room is appropriately Adjust to Kill. Further, when adjusting the vertical position of the shutter portion 40, the head portion 32 of the adjusting screw shaft 30 to be screwed moves up and down together with the shutter portion, so that the height position corresponding to the head position of the adjusting screw shaft 30 is obtained. The position of the shutter unit 40 and the opening degree of the underfloor opening 13 can be determined from the state of the operation instrument 50, and the operation and adjustment can be appropriately performed after grasping the adjustment of the air suction amount to the indoor space.

  In addition, although the example which uses as a suction inlet is shown in the air-control opening | mouth apparatus which concerns on the said embodiment, it can also be set as the structure used as not only this but a blower outlet. In the case of the air outlet, the shutter unit changes the communication state between the underfloor side opening and the air inlet main body space above the shutter unit, and the amount of conditioned air flowing from the under floor space into the air inlet main space, that is, It becomes a mechanism for adjusting the air blowing amount.

Further, in the air restriction port device according to the above-described embodiment, the upper part of the head 32 of the adjustment screw shaft 30 having the same circular shape is fitted into the circular through hole 42 in the central portion of the shutter unit 40, thereby adjusting the screw screw shaft. The head 32 of the adjustment screw shaft 30 is exposed to be operable from above while allowing relative rotation of the head 32 of the head 30 to the shutter unit 40. As long as it can rotate relative to the shutter unit 40 and is exposed to be operable from above, the shape of the through hole of the shutter unit and the head of the adjusting screw shaft is different from that of the above embodiment. You can also. For example, as shown in FIG. 7, the upper portion of the head portion 34 of the adjustment screw shaft 30 has a shape in which one or a plurality of protruding portions 34 a are formed outside the circular portion, and the through hole 43 of the shutter portion 40. Can have a hole shape with one or a plurality of notches 43a corresponding to the shape of the protrusion 34a.
In this case, the head of the adjustment screw shaft 30 is only in a state where the head portion 34 of the adjustment screw shaft 30 is rotated relative to the shutter portion 40 so that the protruding portion 34a matches the position of the cutout portion 43a of the through hole 43. 34 can be inserted into and removed from the through hole 43 of the shutter unit 40. Then, after the head 34 of the adjustment screw shaft 30 is once fitted in the through hole 43 of the shutter portion 40, the head 34 of the adjustment screw shaft 30 is rotated, and the protruding portion 34 a is notched 43 a of the through hole 43. When shifted from the position, a state where the engagement between the shutter unit 40 and the adjustment screw shaft 30 is not released is obtained (see FIG. 7C), and even if an unintended force is applied to the shutter unit 40, the adjustment screw shaft 30 is obtained. Therefore, the state in which the position of the shutter portion 40 can be adjusted by screwing the adjustment screw shaft 30 from above is appropriately maintained.

  Further, in the air vent device according to the embodiment, the lower floor side opening 13 is drilled as a substantially rectangular opening on the peripheral side surface of the lower portion of the air vent body 10, and the edge around the opening is formed. However, the present invention is not limited to this. For example, as shown in FIG. 8, among the edge portions around the underfloor side opening 13 of the air-control mouth body 10, particularly the vertical edge. For the portion, at a predetermined height position corresponding to one or a plurality of positions of the shutter portion 40 that can set the air suction amount to a predetermined representative amount in the installed state on the floor panel of each part of the air restriction device. It is also possible to adopt a configuration in which the edge portion is formed other than a simple linear shape, such as providing the notch 14 or the convex portion 15. When the notch 14 or the convex portion 15 is provided, the temporary position setting of the shutter unit 40 before installation of the air-control opening device, or the position of the shutter unit 40 is adjusted while the face 20 is removed and the inside of the air-control opening is viewed after installation. In this case, the shutter 14 is used so that the positional relationship with the notch 14 or the convex portion 15 corresponds to the required suction amount by using the notch 14 or the convex portion 15 as a guide for alignment of the shutter portion 40. If the portion 40 is positioned, a desired suction amount can be easily obtained, and the labor of adjustment can be greatly reduced.

DESCRIPTION OF SYMBOLS 1 Air inlet apparatus 10 Air outlet main body 12 Indoor side opening part 13 Underfloor side opening part 14 Notch 15 Convex part 20 Face part 21 Hole 22 Step part 30 Adjustment screw shaft 31 Screw part 32, 34 Head 33 Engagement hole Part 34a Projection part 40 Shutter part 41 Side wall part 42, 43 Through-hole 43a Notch part 50 Operation tool 60 Floor panel 61 Equipment opening 62 Floor

Claims (3)

An opening facing the indoor space subject to air conditioning is disposed on the floor of the indoor space, and the conditioned air supplied from below the floor is blown from the opening toward the indoor space, or the air in the indoor space is In the air vent device that sucks into the floor below through the opening,
One or more formed of a hollow substantially box-like body, disposed in an opening for equipment in a floor panel forming a double floor, and communicating with a space under the floor panel or a duct installed under the floor panel A vent opening main body provided with a lower side opening on the side surface portion and an indoor side opening communicating with the indoor space at the upper part,
A plurality of through-holes as the opening are formed in a central portion, and a substantially frame-like face disposed on the upper side of the air-conditioning port body in a state where the holes communicate with the indoor-side opening of the air-conditioning port body. And
An adjustment screw shaft that is screwed into the lower portion of the air restriction port main body and is arranged in a state of protruding upward in the air restriction port main body;
A substantially plate-like shutter portion disposed in the air restriction port body so as to be movable up and down as a shape that substantially matches the cross-sectional shape of the internal space of the air restriction body.
The head of the adjustment screw shaft is in contact with the lower part of the shutter part while being allowed to rotate relative to the shutter part to support the shutter part from below, and at least a part of the upper surface of the head through a through hole provided in the shutter part Is exposed, and a predetermined operating instrument can be engaged with the exposed portion from above,
The adjustment screw shaft is screwed by the operation of the operating instrument engaged with the exposed portion of the head, and changes the vertical position of the shutter portion on the upper side of the head in the air control port body. Air-control device characterized by In the air inlet apparatus according to claim 1,
The shutter portion is formed with a side wall portion having a predetermined height protruding upward and / or downward in the peripheral portion,
An arrangement in which the cross-sectional shape of the internal space of the air restriction port body and the planar view shape of the shutter portion are a predetermined symmetrical shape, and the center position of the adjusting screw shaft with respect to the shutter portion coincides with the center of the symmetrical shape of the shutter portion. Even if the top and bottom of the shutter part is replaced and disposed in the air restriction body, the head of the adjustment screw shaft part is exposed so as to be operable by the operation tool at the through hole position of the shutter part. An air vent device characterized by In the air inlet apparatus according to claim 1 or 2,
Of the holes in the face portion, at least a hole above the head of the adjustment screw shaft is inserted through the hole into the air control port body of the operation tool, and the adjustment screw shaft of the operation tool is operated. Air-control device characterized in that it is sized to allow movement.

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