JP3736245B2 - Air supply / exhaust port - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[Prior art]
FIG. 9 is a structural example of a conventional air supply / exhaust port disclosed in JP-A-11-14131. The damper is slid up and down to open and close the air supply / exhaust air path.
In the figure, the main body 1a of the air supply / exhaust port has an indoor side opening 1k that opens to the indoor side on one side, and a connection side opening 1m that opens to the outdoor side and is connected to the duct on the other side. An air passage is formed between the opening 1k and the connection side opening 1m.
The air path direction from the indoor side opening 1k and the air path direction from the connection side opening 1m are bent at right angles.
[0002]
Inside the main body 1a, a damper 6 for opening and closing the air passage is provided so as to slide and open at right angles to the air passage direction from the connection side opening 1m.
The damper 6 is formed in a flat plate shape, and has a groove 22 that is two parallel long holes in the vicinity of the center, and a bent portion that can be gripped for opening and closing at the end on the indoor opening 1k side. 23 is provided. The length of the groove 22 is long enough for the damper 6 to fully open the connection side opening 1m from fully closed. Further, when the damper 6 fully opens the connection side opening 1m, a space is secured so as to fit between the periphery of the connection side opening 1m and the indoor side opening 1k.
[0003]
Both ends of the damper 6 are supported by the ribs 11, and a spring 7 formed exclusively in a groove 22 provided in the center is locked and pressed against the ribs 11 by a spring force.
A flange 1d for attachment is formed around the indoor opening 1k side, and an attachment screw 5 and a fixture 4 for fixing to the attachment hole 19 of the wall 20 are provided on the flange surface.
A grill 2 having an opening 2b is attached and covered on the indoor side of the flange 1d.
[0004]
The air supply / exhaust port configured as described above is fixed by inserting the main body 1a into the mounting hole 19 of the wall 20 and turning the mounting screw 5 to tighten the fixing bracket 4, and is connected to the connection side opening 1m side with the outside. Is connected.
The air supply / exhaust air volume is adjusted by sliding the damper 6 to adjust the size of the opening area of the connection side opening 1m. The damper 6 is fixed at a position adjusted by being pressed by the spring force of the spring 7.
[0005]
Further, as another method for fixing the air supply / exhaust port body 1a to the wall, there is also a method in which the mounting screw 5 is directly fastened and fixed to the wall 20 with only the mounting screw 5, but in this case, the mounting screw 5 to be used is the flange portion 1d. Ribs (not shown) are provided on the mounting screws, and the mounting screws 5 are fixed between the ribs with tape or the like.
[0006]
[Problems to be solved by the invention]
However, when the damper is opened, the air supply / exhaust port configured as described above requires a space in the length direction for accommodating the damper and a space for accommodating the spring. There is a problem that the air supply / exhaust port cannot be attached to a place with a small depth dimension such as in a wall surface.
[0007]
In addition, this structure has a problem that the damper structure is complicated, requires special parts, and takes time to assemble.
[0008]
In addition, at the construction site, the shape of the opening such as the wall to which the air supply / exhaust port is attached is processed into a round shape or a square shape. For this reason, if the difference in the gap between the openings becomes large due to the difference in the shape of the openings, the installer needs to pay attention such as position correction to prevent one end of the openings from being seen from the room. There is a problem that workability is poor and the flange of the main body must be enlarged more than necessary to hide the gap.
[0009]
In addition, a screw for fixing the main body to the wall surface or the like with a screw is provided on the flange surface of the main body, and the screw is laid down and taped. However, this method requires a wide flat plane in order to lay the screw, and there is a problem that the thickness and width dimension of the flange must be increased.
[0010]
The present invention has been made in order to solve such problems, and it is possible to reduce the space for accommodating the damper to make the main body smaller and attach it to a place with a small depth dimension such as a wall surface. A damper structure that does not need to be used is realized, and the thickness and size of the flange of the main body are reduced to improve the design, and the shape of the opening of the mounting hole such as a wall is round or square The air supply / exhaust port that can be attached to both is obtained.
[0011]
[Means for Solving the Problems]
The present invention has an indoor side opening and an outdoor side opening, and an air passage from the indoor side opening and an air passage from the outdoor side are formed to communicate with each other at a substantially right angle to constitute a main body, and the outdoor side A damper that rotates and opens and closes the air passage from the opening is provided in the main body, the rotation axis direction of the damper is provided in the indoor opening direction, and the damper has a shutter surface that opens and closes the air passage perpendicular to the rotation axis. It is formed parallel to one of the perpendicularly intersecting center lines formed in a plane viewed from the indoor opening direction and at a position away from the center of the rotation axis by a predetermined distance in the other center line direction.
[0012]
Further, the damper is provided with a support portion that is rotatably supported at one end side by the main body, and an operation portion that transmits a rotational force to rotate the damper at the other end side.
[0013]
Further, positioning means for holding the opening / closing position of the damper for adjusting the air volume is provided in the vicinity of the outdoor opening in the main body.
[0014]
The damper is configured such that the support portion is on the back side of the main body and the operation portion is on the indoor side opening side.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. 1 is a sectional view showing an air supply / exhaust port, FIG. 2 is a partially cutaway front view thereof, FIG. 3 is a plan view and a side view of the damper, and FIG. 4 is an enlarged sectional view of a damper support portion.
In the figure, the air supply / exhaust port 30 is composed of a main body 31 portion and a grill 32 portion.
[0016]
The main body 31 has an indoor side opening 33 that is open to communicate with the room and an outdoor side opening 34 that is connected to the outside of the room by connecting a duct, and an air passage 35 for ventilation is formed therebetween. The air passage 35 is formed by bending an indoor air passage 35 a and an outdoor air passage 35 b at right angles within the main body 31. The portion of the body of the air passage 35 flexes the R plane 3 0 a so wind easily flows is configured to no to Ku loss air passage.
[0017]
A flange 37 for mounting and fixing to the wall 36 is formed around the indoor opening 33 of the main body 31. The flange 37 is flat on the wall surface side so as to be in close contact with the wall, and a rib 37a having a predetermined height is formed on the indoor side in order to increase the strength of the flange 37. The attachment holes 37b are four long holes for fastening screws for fixing the flange 37 to the wall 36. The outer peripheral shape of the flange 37 is round or square.
[0018]
On the other hand, a cylindrical connecting portion 38 for connecting a duct is formed around the outdoor opening 34.
Inside the main body 31, there is provided a damper 40 for opening and closing the air passage 35 and adjusting the air volume.
[0019]
The damper 40 has a processing to made a flat plate shape such as bending punching a metal plate such as a plated steel plate or aluminum plate, the end face 3 4 a opening surface of the indoor-side opening 33 side of the outdoor side opening 34 The shutter portion 41 is composed of a closing shutter portion 41, a support portion 42 that movably supports the damper on the main body, and an operation portion 43 that is operated by manually rotating the damper. The positional relationship between the shutter portion 41 and the shutter portion 41 is sandwiched between them. The support part 42 and the operation part 43 are comprised on both sides of the.
[0020]
The shutter portion 41 has an r surface 41 a that is 0.5 mm smaller than the radius of the opening of the outdoor opening 34 and an R surface 41 b that is 1 mm larger. The portion r of the surface 41a is small so as not to contact the inside of the outdoor opening 34 when the damper 40 is rotated and closed or opened. Further, when closed, a slight gap is made between the inside of the outdoor opening 34 and the portion r, and a small amount of ventilation is always maintained.
Further, when the portion R of the surface 41b is closed, it overlaps the end surface 34a and closes the outdoor opening 34.
In addition, R of 41b is the same as R of 41a, or can make it small and can increase the ventilation | gas_flowing quantity always maintained.
[0021]
The support portion 42 is connected to the shutter portion 41 and bent at a right angle, and a mounting hole 42b for mounting is formed concentrically on a round outer diameter 42a. The outer diameter 42a is larger than the outer diameter of the preload spring described later.
The operation part 43 is configured such that an extended part 43a having a predetermined width is provided on the shutter part 41 in a direction opposite to the support part 42, and the tip part 43b is formed in an L shape. When rotating the damper 40, the front end portion 43b is grasped and operated.
[0022]
Since the length from the support portion 42 of the damper 40 configured as described above to the tip of the operation portion 43 is from the mounting surface 45b of the damper 40 inside the main body 31 to the flange 37, it can be easily grasped by hand and can be easily operated.
The damper 40 is attached by passing a mounting hole 42b of the support part 42 of the damper through a support shaft 45a of the support part 45 provided in the back of the main body 31 in the vicinity of the outdoor opening 34 and a screw 48 together with the preload spring 46 and the washer 47. Tighten and fix with.
[0023]
The preload spring 46 is compressed, and the damper support portion 42 is pressed against the mounting surface 45b by the spring force to hold the backlash of the damper 40.
Since the preload spring 46 is not fully compressed and has room for compression, the damper 40 can be rotated with a margin to move in the axial direction of the support shaft 45a, and can be stopped at an arbitrary position. The damper 40 stopped at an arbitrary position is fixed and maintained by a frictional force with the mounting surface 45 b due to the spring force of the preload spring 46.
[0024]
The center of the support shaft 45a of the support portion 45 is such that the dimension X from the center of the outdoor opening 34 is equal to the distance dimension x between the center of the support portion 42 of the damper 40 and the center of the shutter portion 41. 34 is provided at a position where the dimension Y from the end surface 34a of the 34 is equal to the distance dimension y from the center of the support portion 42 of the damper 40 to the surface of the shutter portion 41, and therefore the surface of the shutter portion 41 when the damper 40 is closed. Is in contact with the end face 34a.
[0025]
Further, the length from the mounting surface 45b to the tip of the support shaft 45a is such that the thickness of the support portion 42 of the damper 40, the plate thickness of the preload spring 46, and the washer 47 are not compressed when the screw 48 is tightened. The damper 40 has a play in the axial direction that is longer than the total thickness.
[0026]
The grill 32 is mounted on the wall 36 after the main body 31 is mounted on the wall 36, covers the flange 37, and has a dish-like shape having an opening for ventilation in the central portion. The grill 32 is fitted and fixed to the outer peripheral portion of the flange 37.
[0027]
The air supply / exhaust port 30 configured as described above is attached to the wall 36 with a mounting hole 36a in order to supply and exhaust air by connecting the room and the outside with a duct.
The construction method of attaching the air supply / exhaust port 30 is to open a mounting hole 36a for attachment to the wall 36, draw out a flexible duct previously piped in the wall 36 to the indoor side, and connect the connecting portion 38 of the air supply / exhaust port 30 on the indoor side. After connecting the cable and winding aluminum tape or the like around the connection part, the flexible duct is pushed back into the wall, and the body 31 of the air supply / exhaust port 30 is fixed to the wall surface with screws so that the flange 37 is in close contact with the wall surface. To do. Next, the damper 40 is gripped and rotated to adjust the outdoor opening area so that a necessary air supply / exhaust air volume can be obtained. When the adjustment is completed, the work of fitting the grill 32 into the flange 37 is completed.
[0028]
When the grill 32 is removed, the operation part 43 of the damper 40 is positioned on the flange surface so that the air volume can be easily grasped by hand and easily operated from the indoor side.
The damper 40 is supported by the holding force of the preload spring 46 to prevent rattling, and the damper 40 is not easily opened or moved by wind pressure even when the damper is closed or half-opened. Further, even if the mounting direction of the main body 31 is arbitrary in the up / down / left / right direction with respect to the direction of the outdoor opening 34, the damper does not rattle or does not move naturally, so that the occurrence of chatter noise is suppressed.
[0029]
Since the damper 40 can be manufactured in a flat plate shape with a plate material, it is easy to manufacture and the mold cost can be reduced. Further, the damper 40 can be supported by simply tightening one screw, and standard parts can be used for the spring parts, which can be easily assembled.
Since the damper 40 only rotates in front of the outdoor opening 34, it does not require a damper storage space when fully opened unlike the slide type, and the body 31 can be made short and compact, and the depth dimension such as the inside of the wall surface is small. You can install an air supply / exhaust port. Although the present embodiment has been described as the attachment of the wall surface, it is the same that it is effective even when it is attached to a ceiling or floor where the space is narrow.
[0030]
Embodiment 2. FIG.
As a second embodiment, a method of determining the opening / closing position of the damper will be described with reference to FIGS. Parts other than those described below are the same as those in the first embodiment, and detailed description thereof is omitted.
In the figure, reference numeral 50 denotes a positioning means for determining and holding the position of the damper 40 provided in an arc along the trajectory in which the shutter portion 41 of the damper 40 near the center of the front of the outdoor opening 34 in the back of the main body rotates. The rib 51 and a plurality of protrusions 52 and stoppers 52a provided at predetermined intervals protruding from the end face of the rib. The protrusion 52 has a rounded tip and a spherical shape.
[0031]
The stopper 52a is provided at the end of the rib 51 opposite to the outdoor opening 34, and the protruding length from the rib 51 is long so that the damper 40 does not get over. It is a stopper that restricts the final end so that the damper 40 does not rotate any more.
The position of the stopper 52a is a position where the damper 40 is fully opened, and the surface of the shutter portion 41 is parallel to the air path direction of the outdoor opening 34 to minimize the air path pressure loss. If there is no stopper and the damper 40 rotates further, the pressure loss of the air passage will increase.
[0032]
A linear interference portion 53 that interferes with the projection 52 is provided on the support portion 42 side of the shutter portion 41 of the damper 40, and this portion is positioned between the projection 52 and the projection 52 so that the damper 40 can be opened and closed. The position is maintained. The relationship between the interference part 53 and the protrusion 52 is that the end surface 53a of the interference part 53 is closer to the rib 51 than the tip of the protrusion 52, and the movement of the damper 40 is limited by the amount of interference (overlap amount) k.
[0033]
When the air supply / exhaust port configured in this manner is used to adjust the air supply / exhaust amount, when the operation portion 43 of the damper 40 is held by hand and rotated to a predetermined position, the support portion 42 of the damper 40 is rotated by the rotational force to the preload spring 46. Is moved up by the movable margin in the direction of the support shaft 45a, and the interference part 53 escapes, so that the interference amount k becomes zero, and the damper 40 moves over the tip of the protrusion 52 to the required position. Can move.
When the damper 40 moves over the tip of the protrusion 52 and moves to a predetermined position, the interference amount k returns to the original state.
[0034]
The damper 40 can be easily moved by hand as described above, but the set position is maintained without moving over the protrusion 52 by a force such as outside wind. Since the protrusion 52 can be mechanically positioned, the positioning can be stably maintained without increasing the spring force of the preload spring 46 even if the product becomes large and the damper becomes large.
[0035]
Further, since the damper 40 is supported by both the spring force of the preload spring 46 and the protrusion 52, vibration of the damper 40 and chatter noise are less likely to occur due to wind pressure such as supply and exhaust.
Note that a smooth R portion is formed at the end 53a of the interference portion 53 and the end of the protrusion 52, so that the movement of the damper 40 is smoothed and the operability is improved by preventing wear.
[0036]
Embodiment 3 FIG.
As a third embodiment, a method of determining the construction position of the air supply / exhaust port body will be described with reference to FIG. FIG. 7 shows the relationship between the air supply / exhaust port and the mounting holes on the wall. Parts other than those described below are the same as those in the first embodiment, and detailed description thereof is omitted.
[0037]
In the figure, 55 is a rib formed on the outer periphery of the main body 31 extending from the flange 37 toward the outdoor opening 34, and is provided at eight locations around the main body 31. The rib 55 is in contact with the inner surface of the mounting hole 36a provided on the wall or the like, and roughly aligns the center of the main body 31 and the mounting hole 36a so as to reduce the deviation, but the actual mounting hole 36a is a round mounting hole. 36b and a square mounting hole 36c, and the rib 55 is provided so as to function in either shape.
[0038]
Specifically, the rib 55 is provided at a position of an intersection 36d where the trajectory of the round mounting hole 36b and the square mounting hole 36c intersects (that is, a position where the positions from the center are the same). Eight ribs 55 are provided, but two ribs are provided on one side. By providing two ribs 55, when the mounting hole 36a is a square mounting hole 36c, the main body 31 rotates in the rotation direction with respect to the mounting hole. When one of the ribs is about to be displaced, one of the ribs comes into contact with the inside of the mounting hole 36a to prevent the displacement of the main body 31 in the rotational direction. As a result, the rib 55 can be brought into contact with the inner side of the round mounting hole 36b and the square mounting hole 36c in any of the upper, lower, left and right directions, so that the center shift can be made small.
[0039]
The square mounting hole 36c is a square with one side dimension smaller than the diameter of the round mounting hole 36b. These size dimensions are specified in advance according to the size of the product so that the intersection 36d is not displaced. Maintained.
[0040]
In the air supply / exhaust port configured in this way, the rib 55 is in contact with the inside of the mounting hole regardless of whether the mounting hole 36a provided in the wall 36 is a round mounting hole 36b or a square mounting hole 36c. Since there is less play and alignment is possible, the displacement between the center of the mounting hole 36a and the main body 31 of the air supply / exhaust port is reduced, and the opening end 36e of the mounting hole does not protrude outside the flange 37, so position adjustment is not required Easy installation work.
[0041]
Further, it is not necessary to increase the flange 37 of the main body more than necessary in anticipation of the displacement of the mounting hole, so that the product can be downsized.
[0042]
Embodiment 4 FIG.
As the fourth embodiment, an example in which a component storage function is provided on the outer peripheral portion of the air supply / exhaust port body will be described. FIG. 8 is a view in which screws for fixing the main body to the outer periphery of the air supply / exhaust port main body are stored. Parts other than those described below are the same as those in Embodiments 1 and 3, and detailed description thereof is omitted.
In the figure, ribs 56a and 56b are provided at predetermined intervals on the outer peripheral side surface of the main body 31 of the air supply / exhaust port, and the flange 37 side is connected by the rib 56c to provide a bag-like blocking portion to accommodate the mounting screw 57. A storage portion 56 is formed.
[0043]
With this construction, the tip of the mounting screw 57 for fixing the main body 31 to the wall surface is stored in the storage portion 56, and the thread portion near the screw head protruding from the storage portion 56 is taped as shown in the figure. Attach the screw to the body by fastening. By storing the screws upright in this way, there is no need for a wide flat surface for laying the screws on the flange, ribs for determining the fixing position of the screws, etc., the size of the flange 37 can be reduced, and the thickness of the flange Can be thinned.
[0044]
【The invention's effect】
According to the present invention, the damper that rotates and opens and closes the air passage from the outdoor opening is provided in the main body, the rotation axis direction of the damper is provided in the indoor opening direction, and the damper uses the shutter surface as the rotation axis. By forming it parallel to one of the perpendicularly intersecting center lines formed on a plane perpendicular to the center and at a predetermined distance from the rotation axis center in the other center line direction, the one-side support damper Thus, there is an effect that an air supply / exhaust port that is easy to mount the damper is obtained.
[0045]
In addition, the damper has an effect of providing an air supply / exhaust port having a simple damper structure by providing a support portion at one end side and providing an operation portion for transmitting a rotational force to rotate the damper at the other end side.
[0046]
Further, since the damper positioning means is provided in the vicinity of the outdoor opening, there is an effect that a supply / exhaust port of the positioning means having a simple configuration can be obtained.
[0047]
Further, there is an effect that an air supply / exhaust port that can be easily operated by hand can be obtained by setting the support portion of the damper to the back side of the main body and the operation portion to the indoor side opening side.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an air supply / exhaust port according to a first embodiment of the present invention.
FIG. 2 is a partially broken front view of the air supply / exhaust port according to the first embodiment of the present invention.
FIG. 3 is a view of a damper 2 in the first embodiment of the present invention.
FIG. 4 is an enlarged cross-sectional view of a damper support portion according to the first embodiment of the present invention.
FIG. 5 is a partially broken front view of an air supply / exhaust port according to a second embodiment of the present invention.
FIG. 6 is an enlarged view of a positioning means for a damper according to a second embodiment of the present invention.
FIG. 7 is a front view of an air supply / exhaust port and a wall mounting hole according to a third embodiment of the present invention.
FIG. 8 is a two-side view in which components are stored in the air supply / exhaust port body according to the fourth embodiment of the present invention.
FIG. 9 is a cross-sectional view of a conventional air supply / exhaust port.
[Explanation of symbols]
31 body, 33 indoor side opening, 34 outdoor side opening, 36a mounting hole, 40 damper, 41 shutter part, 42 support part, 43 operation part, 45 support part, 50 positioning means, 51 rib, 52 protrusion, 52a stopper, 55 Ribs, 56 storage portions, 56a, 56b, 56c ribs.

Claims (4)

An indoor side opening and an outdoor side opening are provided, and an air passage from the indoor side opening and an air passage from the outdoor side are formed to communicate with each other at a substantially right angle to form a main body. A damper that rotates and opens and closes the passage is provided in the main body, the rotation axis direction of the damper is provided in the opening direction of the indoor side, and the shutter has a shutter surface that opens and closes the air passage and the opening on the indoor side is perpendicular to the rotation axis. An air supply / exhaust port formed parallel to one of the center lines intersecting at right angles formed in a plane seen from the direction and at a predetermined distance from the rotation axis center in the other center line direction . 2. The supply according to claim 1, wherein the damper is provided with a support portion that is rotatably supported at one end side by the main body, and an operation portion that transmits a rotational force to rotate the damper at the other end side. Exhaust vent . The air supply / exhaust port according to claim 1, wherein positioning means for holding an opening / closing position of a damper for adjusting an air volume is provided in the vicinity of the outdoor opening . 3. The air supply / exhaust port according to claim 2, wherein the damper has the support portion on the back side of the main body and the operation portion on the indoor side opening side .

Images