JP2019163902A - Ventilation hood set and ventilation hood - Google Patents

Abstract

To provide a ventilation hood set capable of being fixed without damaging an external wall.SOLUTION: There is provided a ventilation hood set which includes a ventilation hood having a cylindrical duct connection part and a cover covering one opening end of the duct connection part, and an indoor duct communicated with the interior of a room connected to the other opening end of the duct connection part. The duct connection part and the indoor duct are arranged so as to be partially overlapped. The duct connection part has a hood side locking piece provided so as to project to the outer surface of the duct connection part, and the indoor duct has a duct side locking piece provided so as to project to the inner surface of the indoor duct. A plurality of the duct side locking pieces are provided along the extension direction of the indoor duct. A surface on an indoor duct side of the hood side locking piece is pressed, and the hood side locking piece is elastically deformed toward the inner side of the duct connection part and is engaged with one duct side locking piece among the plurality of duct locking pieces to fix the ventilation hood to the indoor duct. With this configuration, the ventilation hood is fixed to an external wall by making a distance between the external wall and the ventilation hood appropriate without damaging the external wall.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation hood set installed on an outer wall or an inner wall of a building.

  Conventionally, a vent member and a duct are known as this type of ventilation hood set (see, for example, Patent Document 1).

  Hereinafter, the ventilation port member and the duct will be described with reference to FIGS. 9 (a) and 9 (b).

  Fig.9 (a) is a schematic sectional drawing which shows the state by which the conventional ventilation hood set was attached to the outer wall of a building. As shown in FIG. 9 (a), a conventional ventilation hood set is provided with a duct 101 provided in the outer wall of a building, and a main body cylinder 102 to be inserted into the inside of the duct 101, and a main body A configuration of a vent member including a retaining fitting 103 provided on the cylinder 102 and a hood main body 104 connected to the main body cylinder 102 is disclosed. In the projection view of the ventilation port member viewed from the front side of the outer wall surface in FIG. 9B, the hood flange portion 105 in contact with the wall surface of the hood main body 104 is provided with a plurality of half-cut holes 106. The construction method can be attached to the outer wall with screws 107.

JP-A-8-303830

  Such a conventional ventilation hood set, that is, a combination of a ventilation port member and a duct, requires screwing for fixing to a wall. That is, depending on the material of the wall, if the screw is directly struck into the wall, the wall is cracked. Therefore, the screw is fixed to the wall after the pilot hole is made in the wall. Thus, when fixing a ventilation port member, the subject that a wall was damaged occurred.

  Moreover, when fixing a ventilation port member to the duct of an outer wall, the jig which performs a screw and screwing was needed, and the subject that work cost and work efficiency were bad was provided. Then, this invention solves the said conventional subject, and it aims at providing the ventilation hood set which can be fixed without damaging an outer wall.

  And in order to achieve this object, the ventilation hood provided with the cylindrical duct connection part and the cover which covers one opening end of the said duct connection part, and the room | chamber interior provided in the outer wall which connects indoor and outdoor A ventilation hood set including a duct, the other opening end of the duct connection portion of the ventilation hood being disposed in the indoor duct, and the duct connection protruding from an outer surface. The indoor duct includes a duct-side locking piece provided so as to protrude from the inner surface of the indoor duct, and the duct-side locking piece is A plurality of the hood side locking pieces are provided along the extending direction of the duct, and the hood side locking pieces are elastic toward the outer surface side of the duct connecting portion by pressing the surface on the indoor duct side of the hood side locking pieces. A plurality of the dashes It is configured as a ventilation hood set that engages with one of the duct side locking pieces and fixes the ventilation hood to the indoor duct, thereby achieving the intended purpose. To achieve.

  According to the present invention, it is possible to provide a ventilation hood set that can be fixed with a simple configuration without damaging the wall.

Sectional drawing which shows the structure of the ventilation hood set which concerns on Embodiment 1 of this invention. (A) The front view which looked at the duct connection part of the ventilation hood which concerns on Embodiment 1 from the indoor duct side, (b) The front view which looked at the indoor duct which concerns on Embodiment 1 from the ventilation hood side, (c) Implementation The projection front view which looked at the state which the duct connection part and indoor duct which concern on the form 1 are engaged from the indoor side. Sectional drawing which shows the fixed state of the ventilation hood set which concerns on Embodiment 1. FIG. (A) The front view which looked at the duct connection part of the ventilation hood which concerns on Embodiment 2 from the indoor duct side, (b) The front view which looked at the indoor duct which concerns on Embodiment 2 from the ventilation hood side, (c) Implementation The projection front view which looked at the state which the duct connection part and indoor duct which concern on the form 2 have engaged from the indoor side. (A) The projection front view which looked at the state which the duct connection part which concerns on Embodiment 2 and the indoor duct are engaged from the indoor side, (b) The duct connection part which concerns on Embodiment 2, and the indoor duct engage The projection front view which looked at the state which has cancelled | released from the indoor side. The perspective view which shows the structure of the ventilation hood set which concerns on Embodiment 2. FIG. Sectional drawing which shows the structure of the ventilation hood set which concerns on Embodiment 3. FIG. The perspective view which shows the structure of the ventilation hood set which concerns on Embodiment 4. FIG. (A) The schematic sectional drawing of the conventional ventilation hood set which shows the state attached to the outer wall, (b) The projection figure of the conventional ventilation hood set seen from the front side of the outer wall.

  The ventilation hood set according to the present invention includes a ventilation hood provided with a cylindrical duct connection portion and a cover that covers one open end of the duct connection portion, and an indoor duct provided on an outer wall that communicates the room and the outdoors. A ventilating hood set, wherein the duct connecting part is disposed so that the other open end of the duct connecting part of the ventilating hood is accommodated in the indoor duct, and the duct connection is an outer surface of the duct connecting part. A hood-side locking piece provided so as to protrude from the inner duct, and the indoor duct includes a duct-side locking piece provided so as to protrude from the inner surface of the indoor duct, and the duct-side locking piece Are provided along the extending direction of the indoor duct, and the hood-side locking piece is inward of the duct connecting portion by pressing the surface of the hood-side locking piece on the indoor duct side. Elastically deformed toward Engaged with any one of the duct-side locking piece of the plurality of the duct-side locking piece has the configuration of ventilation hood set, characterized in that for securing the fume hood into the chamber duct.

  With this configuration, when connecting the ventilation hood and the indoor duct, the hood-side locking piece provided in the duct connection of the ventilation hood by inserting the duct connection of the ventilation hood toward the indoor duct. Engages with one of the plurality of duct side locking pieces provided along the extending direction of the indoor duct. Therefore, there is an effect that the ventilation hood can be easily fixed to the indoor duct of the outer wall without damaging the outer wall. Furthermore, when connecting the ventilation hood and the indoor duct, the hood side locking piece provided in the ventilation hood duct connection part is inserted by inserting the duct connection part of the ventilation hood toward the indoor duct, It engages with one of a plurality of duct side locking pieces provided along the extending direction of the indoor duct. Therefore, by inserting the duct connection portion into the indoor duct, the duct connection portion can be engaged with the indoor duct at a plurality of arbitrary positions in the insertion direction, and the ventilation hood can be easily attached to the indoor duct at a plurality of arbitrary positions. It has the effect that it can be fixed to. With this configuration, the ventilation hood set can appropriately set the distance between the ventilation hood and the outer wall even when the outer surface of the outer wall and the outer wall side end of the indoor duct have a dimensional tolerance. Has the effect of.

  Moreover, the said duct connection part and the said indoor duct are cylindrical, The engagement with the said duct side latching piece and the said hood side latching piece is made by rotating the said duct connection part in the circumferential direction. You may make it the structure of the ventilation hood set characterized by cancelling | releasing.

  Accordingly, the hood side locking piece can be moved in the circumferential direction by sliding and rotating the duct connecting portion in the circumferential direction, and the duct side locking piece and the hood side locking piece can be easily moved. There is an effect that the engagement with can be released.

  In addition, the duct side locking piece includes an inclined portion that guides the hood side locking piece to the surface on the ventilation hood side, and the movement of the hood side locking piece to the ventilation hood side on the indoor side surface. You may make it the structure of the ventilation hood set characterized by providing the omission control part formed with the standing wall to regulate.

  Thereby, when inserting the duct connection portion of the ventilation hood toward the indoor duct, the surface on the indoor duct side of the hood side locking piece comes into contact with the inclined portion of the duct side locking piece, and is guided to the inclined portion, Pressed. Therefore, the load on the indoor duct side surface of the hood side locking piece can be reduced, and the hood side locking piece can be elastically deformed toward the inside of the duct connecting portion. Further, when the hood side locking piece reaches the indoor side surface of the duct side locking piece, the elastic deformation of the hood side locking piece is reduced, and the removal restriction formed by the standing wall on the indoor side of the duct side locking piece is reduced. There exists an effect that it can contact | abut to the inner surface of a part and an indoor duct, and can be engaged reliably.

  In addition, the duct side locking piece includes a rotation restricting portion that controls rotation of the hood side locking piece in one circumferential direction. Also good.

  As a result, the duct connecting portion is restricted from rotating clockwise and counterclockwise in the circumferential direction, and when the duct connecting portion is rotated in one circumferential direction, the duct side locking piece and The engagement with the hood side locking piece can be released. Therefore, there is an effect that the reliability of the engagement between the hood side locking piece and the duct side locking piece can be improved.

  A plurality of the hood side locking pieces are provided at equal intervals on the same circumference of the outer surface of the duct connecting portion, and the duct side locking pieces that engage with the plurality of hood side locking pieces are provided. A plurality of ventilation hood sets may be provided at equal intervals on the same circumference of the inner surface of the indoor duct.

  Thereby, since the hood side locking piece and the duct side locking piece are fixed at a plurality of positions, there is an effect that the ventilation hood can be reliably fixed to the indoor duct.

  The ventilation hood includes a cylindrical duct connection portion and a cover that covers one opening end of the duct connection portion, and the other opening end of the duct connection portion of the ventilation hood includes an indoor and an outdoor portion. The hood-side locking piece that is disposed so as to be housed in an indoor duct provided on the outer wall that communicates with each other and that protrudes to the outer surface of the duct connecting portion protrudes to the inner surface of the indoor duct. A plurality of the duct-side locking pieces are provided along the extending direction of the indoor duct, and the hood-side locking pieces are the hood-side locking pieces. When the surface on the indoor duct side is pressed, it is elastically deformed toward the inside of the duct connecting portion, and is engaged with any one of the duct side locking pieces among the plurality of duct side locking pieces. Even in the configuration of a ventilation hood characterized by There.

  As a result, when the ventilation hood and the indoor duct are connected, the hood side locking piece provided on the ventilation hood duct connecting portion is inserted by inserting the duct connecting portion of the ventilation hood toward the indoor duct. , Engage with any one of a plurality of duct side locking pieces provided along the extending direction of the indoor duct. Therefore, when inserting the duct connection portion into the indoor duct, the duct connection portion can be engaged with the indoor duct at a plurality of arbitrary positions in the insertion direction, and the ventilation hood can be easily attached to the indoor duct at the plurality of arbitrary positions. It has the effect that it can be fixed to. With this configuration, the ventilation hood can properly set the distance between the ventilation hood and the outer wall even when the outer surface of the outer wall and the outer wall side end of the indoor duct have a dimensional tolerance. There is an effect.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention. In addition, throughout the drawings, the same portions are denoted by the same reference numerals, and the second and subsequent descriptions are omitted. Furthermore, in each drawing, the description of the details of each part not directly related to the present invention is omitted.

  In addition, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. Only. Furthermore, the following embodiments can be implemented in combination within a consistent range.

(Embodiment 1)
Hereinafter, with reference to FIG. 1, FIG. 2 (a), (b), (c), and FIG. 3, the ventilation hood set which concerns on Embodiment 1 of this invention is demonstrated. 1 is a cross-sectional view showing the configuration of the ventilation hood set according to Embodiment 1 of the present invention, and FIG. 2A is a front view of the hood side locking piece 10 as viewed from the indoor duct side in FIG. 2B is a front view of the indoor duct 7 as viewed from the side of the ventilation hood of FIG. 1, and FIG. 2C shows the hood in a state where the duct connection portion 1 is inserted into the indoor duct 7. It is the projection front view which projected the state which the side latching piece 10 and the duct side latching piece 12 are engaging, and looked at the indoor duct 7 from the indoor side. FIG. 3 is a cross-sectional view showing a state in which the duct connecting portion 1 is inserted into the indoor duct 7 and the hood side locking piece 10 and the duct side locking piece 12 are engaged.

  As shown in FIG. 3, the ventilation hood set 8 includes a ventilation hood 4 and an indoor duct 7. The ventilation hood 4 includes a cylindrical duct connection portion 1 and a cover 3 connected so as to close one end of the cylindrical duct connection portion 1.

As shown in FIG. 1, the duct connection portion 1 has a hollow cylindrical shape, and the diameter of the duct connection portion 1 is
It is smaller than the diameter of the indoor duct 7 and has a size that allows the duct connecting portion 1 to be inserted into the indoor duct 7. The duct connecting portion 1 has a flange 14 that extends in the outer peripheral direction at one opening end 2 on the cover 3 side, and the other opening end 5 is disposed so as to partially overlap an indoor duct 7 that communicates with the room 6. The Further, the duct connecting portion 1 includes a hood side locking piece 10 that protrudes outward from the outer surface 9.

  As shown in FIG. 1, the hood side locking piece 10 protrudes from the outer surface 9 of the duct connection portion 1 in the outer peripheral direction, and the duct side locking piece 12 is inserted when the duct connection portion 1 is inserted into the indoor duct 7. To restrict the movement of the duct connecting portion 1 in the removal direction J. The hood side locking pieces 10 are provided in the same number as the duct side locking pieces 12, and are engaged with the duct side locking pieces 12 when the duct connecting portion 1 is inserted into the indoor duct 7. It arrange | positions at the outer surface 9 of the duct connection part 1 so that it may do.

  As shown in FIG. 1, the hood side locking piece 10 is a cylinder fixing portion 15 that is fixed to the outer surface 9 of the duct connection portion 1 in the direction in which the ventilation hood 4 is inserted into the indoor duct 7, that is, in the insertion direction R. It has. Further, in the insertion direction R, an upright portion 16 that rises from the outer surface 9 of the duct connecting portion 1 to the outer peripheral side is provided at a position on the rear end side of the tube fixing portion 15. The upright portion 16 is provided so as to stand on the outer peripheral side of the tube fixing portion 15. The details of the engagement between the hood side locking piece 10 and the duct side locking piece 12 will be described later.

  In the state where the duct connecting portion 1 of FIG. 1 is not inserted into the indoor duct 7, the upright portion 16 of the hood side locking piece 10 is compared with the state where the duct connecting portion 1 of FIG. 3 is inserted into the indoor duct 7. It protrudes larger than the outer surface 9 of the duct connection part 1. Specifically, when the duct connection portion 1 is not inserted into the indoor duct 7, it protrudes 9 mm from the outer surface 9 of the duct connection portion 1, but the duct connection portion 1 of FIG. 3 is inserted into the indoor duct 7. In this state, it protrudes 6 mm from the outer surface 9 of the duct connecting portion 1. That is, when the duct connecting portion 1 is inserted into the indoor duct 7, the upright portion 16 is elastically deformed and contracted toward the outer surface 9 side of the duct connecting portion 1 for 3 mm. As shown in FIG. 1, the cover 3 is integrated with the duct connection portion 1 by, for example, riveting to the flange 14 of the duct connection portion 1. The cover 3 is a hollow rectangle in a cross-sectional view, and one end communicates with the internal space of the duct connection portion 1 and the other end is open to the outside. Here, the outside means outdoors. In FIG. 1, the cover 3 has a structure in which the other end is opened downward to prevent rain from entering. That is, the cover 3 functions as a cover that prevents inflow of rain and wind into the indoor duct 7.

  The above is the configuration of the ventilation hood 4. As shown in FIG. 3, the indoor duct 7 is provided, for example, in a hole 18 penetrating the outer wall 17 of a house or the like so that the inside and the outside communicate with each other with the outer wall 17 interposed therebetween. The indoor duct 7 has a hollow cylindrical shape, and when installed on the outer wall 17, the outer surface 19 abuts on the inner surface of the hole 18 and is fixed in the hole 18, and the inner surface 11 provides an air passage space for blowing air. Constitute. Further, when the indoor duct 7 is installed, an outer wall side end portion 20 which is an opening at an end portion of the indoor duct 7 is positioned on the same plane as the outer surface 21 of the outer wall 17. The indoor duct 7 includes a duct side locking piece 12 in the vicinity of the outer wall side end portion 20.

  As shown in FIG. 3, the duct side locking piece 12 protrudes from the inner surface 11 of the indoor duct 7 toward the central axis of the indoor duct 7. The protruding dimension of the duct side locking piece 12 may be the same as the dimension of the wall thickness of the indoor duct 7, for example. Here, the wall thickness is a distance between the outer surface 19 and the inner surface 11 of the indoor duct 7. Further, as shown in FIG. 3, a plurality of duct side locking pieces 12 are provided at regular intervals along the extending direction of the indoor duct 7. Further, as shown in FIG. 3, the plurality of duct side locking pieces 12 are arranged in a line in the front view of the indoor duct 7 viewed from the direction J.

  Further, as shown in FIGS. 2A and 2B, the duct side locking piece 12 is formed so as to be larger and wider in the outer circumferential direction than the hood side locking piece 10. Yes. With this configuration, when the duct connection portion 1 is inserted into the indoor duct 7, the duct-side locking piece 12 and the hood-side locking piece 10 can be reliably disposed even when the position of the hood-side locking piece 10 is shifted due to a dimensional tolerance or the like. The side locking piece 12 and the hood side locking piece 10 can be engaged and fixed.

  Further, as shown in FIGS. 2A and 2B, the hood side locking pieces 10 and the duct side locking pieces 12 are arranged at equal intervals in a cross section in a plane perpendicular to the blowing direction. Has been. The above is the configuration of the indoor duct 7.

  Next, a procedure in which the ventilation hood 4 is inserted into the indoor duct 7 and the hood side locking piece 10 and the duct side locking piece 12 are engaged will be described.

  In the above configuration, first, the central axis of the duct connecting portion 1 of the ventilation hood 4 and the central axis of the indoor duct 7 are matched. At this time, as shown in FIG. 2C, the hood side locking piece 10 provided in the duct connecting portion 1 and the duct side locking piece 12 provided in the indoor duct 7 are arranged so as to contact each other. The In the state of FIG. 2 (c), the duct connection portion 1 is inserted in the direction of the insertion direction R to obtain the state shown in FIG. At this time, the front end surface in the outer peripheral direction of the upright portion 16 of the hood side locking piece 10 is in contact with the inner surface 11 of the indoor duct 7 or the duct side locking piece 12, and further, the inner surface 11 of the indoor duct 7 or the duct side engagement. The stop piece 12 is pressed toward the outer surface 9 side of the duct connecting portion 1. The upright portion 16 is elastically deformed and contracted toward the outer surface 9 side of the duct connecting portion 1.

  Further, as shown in FIG. 3, the upright portion 16 of the hood side locking piece 10 passes through the inner surface 13 of the duct side locking piece 12, and then is the end of the duct side locking piece 12 on the indoor 6 side. It arrange | positions between the control part 22 and the other duct side latching piece 12 adjacent. With this configuration, the hood-side locking piece 10 and the duct-side locking piece 12 are engaged, and the ventilation hood 4 is restricted from moving in the removal direction J side, and the ventilation hood 4 is fixed to the indoor duct 7. Will be. With this configuration, the ventilation hood 4 can be fixed to the outer wall 17 without using screws. Therefore, such a fixing method has an effect that the ventilation hood 4 can be fixed to the outer wall 17 without damaging the outer wall 17 with screws or the like. In addition, a screw and a jig for screwing are not required, and work cost and work efficiency can be improved.

  Further, as shown in FIG. 3, a plurality of the duct side locking pieces 12 are provided at regular intervals along the extending direction of the indoor duct 7, so that the insertion of the duct connection portion 1 of the ventilation hood 4 is performed. By inserting in the direction R, the upright part 16 of the hood side latching piece 10 repeats elastic deformation, and can be engaged with the removal restricting part 22 of the duct side latching piece 12 at a plurality of arbitrary positions. That is, the ventilation hood 4 can be easily fixed to the indoor duct 7 at a plurality of arbitrary positions. Therefore, as shown in FIG. 3, the distance between the cover 3 and the flange 14 of the ventilation hood 4 and the outer surface 21 of the outer wall 17 can be adjusted as appropriate, and the dimensions of the members such as the outer surface 21 of the ventilation hood 4 and outer wall 17 can be adjusted. Tolerance can be absorbed.

  In another embodiment, the hood side locking piece 10 uses a material having high elastic force such as spring steel, so that a stronger pressing force is applied to the hood side locking piece 10 and the hood side locking piece 10 10 and the duct side locking piece 12 can have a strong holding force. Further, by using a material having high elastic force such as spring steel for the hood side locking piece 10, the upright portion 16 comes into contact with the inner surface 11 of the indoor duct 7 with a strong repulsive force, so that a collision sound is generated. Therefore, the engagement state between the hood-side locking piece 10 and the duct-side locking piece 12 can be determined by hearing, and the fixing workability can be improved.

  The upright portion 16 of the hood side locking piece 10 is in contact with the inner surface 11 of the indoor duct 7 and is pressed toward the outer surface 9 side of the duct connecting portion 1, so that the hood side locking piece 10 and the duct side locking piece are 12 is engaged. Accordingly, even if the shape of the inner diameter of the indoor duct 7 has some dimensional tolerance, the duct connecting portion 1 can be accommodated in the indoor duct 7 and can be arranged. The upright portion 16 is elastically deformed, and the upright portion 16 and the duct side locking piece 12 can be engaged. That is, the dimensional tolerance of the inner diameter of the indoor duct 7 can be absorbed by the elastic deformation of the upright portion 16 of the hood side locking piece 10.

  The hood-side locking piece 10 and the duct-side locking piece 12 function even if they are provided one by one, but by providing a plurality in the circumferential direction with respect to the central axis, the duct connecting portion Even if a force in the disconnecting direction J is applied to the duct 1, the duct connecting portion 1 can be more firmly fixed to the indoor duct 7 by the engaging force between the plurality of hood side locking pieces 10 and the duct side locking pieces 12.

  The hood side locking piece 10 may be configured integrally with the duct connecting portion 1. Further, the hood side locking piece 10 does not necessarily need to be divided into the tube fixing portion 15 and the upright portion 16, and protrudes from the outer surface 9 of the duct connection portion 1 in the outer peripheral direction and engages with the duct side locking piece. Anything is acceptable.

(Embodiment 2)
A ventilation hood set according to Embodiment 2 will be described with reference to FIGS. 4 (a), (b), (c) and FIGS. 5 (a), (b). Note that in the second embodiment, differences from the above embodiment will be described. 4A is a front view of the hood side locking piece 10A of the duct connecting portion 1A as viewed from the indoor duct side, and FIG. 4B is a front view of the indoor duct 7A as viewed from the ventilation hood side. FIG. 4C shows a state in which the hood side locking piece 10A and the duct side locking piece 12A are engaged in a state where the duct connecting portion 1A is inserted into the indoor duct 7A. It is the projection front view which looked at indoor duct 7A from the room inner side.

  FIG. 5A projects a state where the hood side locking piece 10A and the duct side locking piece 12A are engaged in a state where the duct connecting portion 1A is inserted into the indoor duct 7A. Moreover, the arrow of Fig.5 (a) has shown the rotation direction of 1 A of duct connection parts for canceling | releasing engagement with 10 A of hood side latching pieces, and 12 A of duct side latching pieces. FIG. 5B is a projection viewed from the indoor side in a state where the hood side locking piece 10A and the duct side locking piece 12A are not engaged in a state where the duct connecting portion 1A is inserted into the indoor duct 7A. It is a front view.

  In the present embodiment, a cylindrical duct connecting portion 1A and an indoor duct 7A are provided. Accordingly, the hood-side locking piece 10A protrudes in the circumferential direction from the outer surface 9A of the duct connecting portion 1A, and the duct-side locking piece 12A protrudes from the inner surface 11A of the indoor duct 7A toward the central axis direction of the indoor duct 7A. It is done. As shown in FIGS. 4A and 4B, the three hood side locking pieces 10A are arranged at equal intervals in the circumferential direction from the outer surface 9A of the duct connecting portion 1A. Further, the three duct side locking pieces 12A are arranged at equal intervals in the circumferential direction from the inner surface 11A of the indoor duct 7A. Furthermore, since the diameter of the outer periphery of the outer surface 9A of the duct connection portion 1A is smaller than the diameter of the innermost periphery (inner periphery of the duct side locking piece 12A) in the indoor duct 7A, the duct connection portion 1A rotates inside the indoor duct 7A. It has a movable structure.

  In the above configuration, as shown in FIGS. 5A and 5B, the duct connecting portion 1A is moved in the circumferential direction from the engaged state in which the hood side locking piece 10A and the duct side locking piece 12A abut. It is a structure which can be slid and rotated clockwise or counterclockwise (clockwise in FIG. 5A). By rotating the duct connecting portion 1A in the circumferential direction, the hood side locking piece 10A can be moved in the circumferential direction, and the hood side locking piece 10A and the duct side locking piece 12A are on the circumference. Thus, the engagement between the hood side locking piece 10A and the duct side locking piece 12A can be released.

  Even when the engagement between the hood-side locking piece 10A and the duct-side locking piece 12A is released and disposed at a position where the hood-side locking piece 10A is not in contact with the hood-side locking piece 10A, It is pressed by the inner surface 11A of the duct 7A and the outer surface 9A of the duct connection portion 1A to suppress easy movement of the duct side connection portion 1A. In other words, since the elastic deformation is in a continuous state, the falling and dropping of the duct connecting portion 1A from the indoor duct 7A is not easy.

  FIG. 6 is a perspective view showing the configuration of the ventilation hood set. Since the duct connecting portion 1A is fixed to the cover 3A as shown in FIG. 6, the ventilation hood 4A can be rotated to release the engagement between the hood side locking piece 10A and the duct side locking piece 12A. it can. The engagement state between the hood side locking piece 10A and the duct side locking piece 12A can be easily visually confirmed by the mounting posture of the ventilation hood 4A. By visually confirming the engagement state between the hood side locking piece 10A and the duct side locking piece 12A, the ventilation hood 4A, that is, the duct connecting portion 1A is slid in the pulling direction J side and pulled out from the indoor duct 7A. Since it can be reliably removed, there is an effect that the workability can be improved.

(Embodiment 3)
Next, a ventilation hood set according to Embodiment 3 will be described with reference to FIG. Note that in the third embodiment, differences from the above embodiment will be described. FIG. 7 is a cross-sectional view showing the configuration of the ventilation hood set according to the third embodiment.

  In the present embodiment, the duct-side locking piece 12B includes an inclined portion 23 that guides the hood-side locking piece 10B to the surface on the side of the ventilation hood 4B, and a direction in which the hood-side locking piece 10B is pulled out on the surface on the interior 6 side. And a drop restricting portion 22B of the standing wall 24 for restricting movement to the J side. The inclined portion 23 is formed so that the side surface on the side of the ventilation hood 4B of the duct side locking piece 12B protrudes from the inner surface 11B of the indoor duct 7B toward the indoor 6 side. Further, the drop-out restricting portion 22B that is the end portion on the indoor 6 side of the duct side locking piece 12B is formed by a standing wall 24 perpendicular to the blowing direction of the indoor duct 7B.

  In the above configuration, when the duct connecting portion 1B of the ventilation hood 4B is inserted toward the indoor duct 7B, the surface on the indoor 6 side of the upright portion 16B of the hood side locking piece 10B is inclined with respect to the duct side locking piece 12B. It abuts on the portion 23 and is guided to the inclined portion 23. The hood-side locking piece 10B is pressed toward the outer surface 9B side of the duct connecting portion 1B by the inner surface 11B of the indoor duct 7B or the duct-side locking piece 12B. It elastically deforms toward the outer surface 9B side of the connecting portion 1B and contracts. At this time, the upright portion 16B of the hood side locking piece 10B can be guided by the inclined portion 23 so as to be gradually elastically deformed. That is, it is possible to reduce the load at the start of insertion of the duct connecting portion 1B into the indoor duct 7B.

  Furthermore, after the upright portion 16B of the hood side locking piece 10B passes through the inner surface of the duct side locking piece 12B, the other side adjacent to the drop-out restricting portion 22B that is the end of the duct side locking piece 12B on the interior 6 side is provided. It arrange | positions between the duct side latching pieces 12. FIG. With this configuration, the hood-side locking piece 10 and the duct-side locking piece 12 are engaged, and the ventilation hood 4 is restricted from moving in the removal direction J side, and the ventilation hood 4 is fixed to the indoor duct 7. Will be.

(Embodiment 4)
Next, a ventilation hood set according to Embodiment 4 will be described with reference to FIG. Note that in the fourth embodiment, differences from the above-described embodiment will be described. FIG. 8 is a perspective view showing the configuration of the ventilation hood set according to the fourth embodiment.

  In the present embodiment, the duct side locking piece 12 </ b> C includes a drop restricting portion 22 </ b> C and a rotation restricting portion 25.

  The removal restricting portion 22C has the same configuration as that of the duct side locking piece 12 in the second embodiment, that is, restricts movement of the hood side locking piece 10C in the removal direction J.

  As shown in FIG. 8, the plurality of duct-side locking pieces 12 </ b> C are provided so as to protrude from the inner surface 11 </ b> C so as to form a line at a predetermined interval with respect to the extending direction of the indoor duct 7 </ b> C. . The ends in the circumferential direction of the plurality of duct side locking pieces 12C are connected by a rotation restricting portion 25. The rotation restricting portion 25 connects ends of the plurality of duct side locking pieces 12C in the circumferential direction, and has a shape extending along the extending direction of the indoor duct 7C. With this configuration, in a state where the hood side locking piece 10C and the duct side locking piece 12C are engaged, the rotation restricting portion 25 can only rotate in the K direction of the duct connecting portion 1C. Rotation in the opposite direction is restricted.

In the above configuration, the hood side locking piece 10C and the duct side locking piece 12C are engaged from the engaged state where the hood side locking piece 10C and the duct side locking piece 12C overlap each other on the circumference. When releasing, engagement can be cancelled | released by rotating the duct connection part 1C to one direction of the circumferential direction. Therefore, when the engagement between the hood side locking piece 10C and the duct side locking piece 12C is released, the duct connection portion 1C is rotated in one direction from the structure rotating in both circumferential directions. Thus, there is an effect that it is possible to prevent disengagement due to unintended rotation of the duct connecting portion 1C.
Therefore, the reliability of engagement between the hood side locking piece 10C and the duct side locking piece 12C can be improved.

  The ventilation hood set according to the present invention has an effect that the ventilation hood set can be fixed to the indoor duct in a short time without using screws or tools. Therefore, it is useful as a ventilation hood set installed on the outer wall of a building.

DESCRIPTION OF SYMBOLS 1 Duct connection part 1A Duct connection part 1B Duct connection part 1C Duct connection part 2 One opening end 3 Cover 3A Cover 4 Ventilation hood 4A Ventilation hood 4B Ventilation hood 5 Other opening end 6 Indoor 7 Indoor duct 7A Indoor duct 7B Indoor duct 7C indoor duct 8 ventilation hood set 9 outer surface 9A outer surface 9B outer surface 10 hood side locking piece 10A hood side locking piece 10B hood side locking piece 10C hood side locking piece 11 inner surface 11A inner surface 11B inner surface 11C inner surface 12 duct side locking Piece 12A Duct side latching piece 12B Duct side latching piece 12C Duct side latching piece 13 Inner surface 14 Flange 15 Tube fixing part 16 Upright part 16A Upright part 16B Upright part 17 Outer wall 18 Hole 19 Outer surface 20 Outer wall side end part 21 Outer surface 22 Omission control part 22B Omission control part 22C Omission control part 23 Inclined part 24 Standing wall 25 Rotation restricting portion R Insertion direction J Removal direction K Rotation direction

Claims (6)

A ventilation hood comprising a tubular duct connection part and a cover covering one open end of the duct connection part;
A ventilation hood set comprising an indoor duct provided on an outer wall communicating between the room and the outside,
The other open end of the duct connection part of the ventilation hood is disposed so as to be accommodated in the indoor duct,
The duct connection includes a hood side locking piece provided to protrude from an outer surface, and the indoor duct includes a duct side locking piece provided to protrude from the inner surface of the indoor duct,
A plurality of the duct side locking pieces are provided along the extending direction of the indoor duct,
The hood side locking piece is elastically deformed toward the outer surface side of the duct connecting portion by pressing the surface on the indoor duct side of the hood side locking piece, and a plurality of the duct side locking pieces are A ventilation hood set, wherein the ventilation hood is fixed to the indoor duct by engaging with any one of the duct side locking pieces. The duct connection portion and the indoor duct are cylindrical, and the engagement between the duct side locking piece and the hood side locking piece is released by rotating the duct connection portion in the circumferential direction. The ventilation hood set according to claim 1 characterized by things. The duct side latching piece restricts the movement of the hood side latching piece to the ventilation hood side on the indoor side surface and an inclined portion that guides the hood side latching piece to the surface on the ventilation hood side. The ventilation hood set according to claim 1, further comprising a drop-out restricting portion formed by a standing wall. 4. The ventilation according to claim 2, wherein the duct side locking piece includes a rotation restricting portion that restricts rotation of the hood side locking piece in one circumferential direction. 5. Food set. A plurality of the hood side locking pieces are provided at equal intervals on the same circumference of the outer surface of the duct connecting portion, and the duct side locking pieces that engage with the plurality of hood side locking pieces are The ventilation hood set according to any one of claims 2 to 4, wherein the ventilation hood set is provided in a plurality at equal intervals on the same circumference of the inner surface of the indoor duct. A ventilation hood comprising a cylindrical duct connection portion and a cover covering one opening end of the duct connection portion, wherein the other opening end of the duct connection portion of the ventilation hood communicates between the room and the outdoors. A hood-side locking piece that is disposed so as to be housed in an indoor duct provided on the outer wall and that protrudes to the outer surface of the duct connecting portion is provided to protrude to the inner surface of the indoor duct. Engaged with the duct side locking piece,
A plurality of the duct side locking pieces are provided along the extending direction of the indoor duct,
The hood side locking piece is elastically deformed toward the inside of the duct connecting portion by pressing the surface on the indoor duct side of the hood side locking piece, and a plurality of the duct side locking pieces are A ventilation hood that engages with any one of the duct side locking pieces.