Aerator

Abstract

To improve the rotary operability of a blade body of an aerator.SOLUTION: An aerator comprises an indoor side vent hole (131) formed on a door body, a blade body 3 that is rotatable between a closed pose to close the vent hole and an open pose to open the vent hole, a knob 6 that is arranged at an indoor side location of the door body 2 being slidable between the closed position and the open position, and an operation body 7 that makes the blade body 3 rotate following the sliding movement of the knob 6. The knob 6 and the operation body 7 are arranged sandwiching a support plate (a surface 51 of a support frame 5) that is arranged in an area on the indoor side surface 20 of the door body 2. A resin washer 62 of the knob body 60 comes close to or comes contact with the front face of the aforesaid support plate. A slide tape 73 arranged on a surface 70 of the operation body 7 comes close to or comes contact with the rear face of the aforesaid support plate.SELECTED DRAWING: Figure 14

Description

[Technical field]

[0001] The present invention relates to a ventilation device. [Background technology]

[0002] 2. Description of the Related Art A door body equipped with a ventilation device for communicating between the inside and outside of a room when the door body is closed and for ventilation and ventilation purposes is known (Patent Document 1).

[0003] Since the ventilation device opens and closes the indoor air vent by rotating the blade body in conjunction with the operation of the knob, it is important that the blade body be rotated smoothly. [Patent Document 1] Patent Publication No. 2014-62375 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] An object of the present invention is to improve the ease of rotation of the vane body of a ventilation device. [Means for solving the problem]

[0005] The technical means adopted in the present invention to solve such problems are as follows: A ventilation hole formed in the door body; a vane body provided inside the door body and rotatable between a closing position for closing the vent hole and an opening position for opening the vent hole; An operation part provided on the door body and slidable between a closed position and an open position; an operating body that rotates the blade body in accordance with the sliding movement of the operating unit; Equipped with The operation unit and the operation body are provided to sandwich a support plate provided near the ventilation hole, At least one of the surface of the support plate and the base end of the operation unit adjacent to or in contact with the surface, and / or A sliding means is provided on at least one of the back surface of the support plate and the surface of the operation body adjacent to or in contact with the back surface. A ventilation device. Typically, the air vent is an indoor side air vent, the operating unit is provided on the indoor side of the door body, and the operating unit and the operating body are arranged to sandwich a support plate provided near the indoor side visible surface of the door body.

[0006] In one embodiment, the operation unit includes an operation unit body and a shaft portion having a screw hole formed therein, The support plate has a guide groove formed of a long hole extending in the moving direction of the shaft portion, An insertion hole for the shaft portion is formed in the surface portion of the operation body, The shaft portion is inserted through the guide groove and the insertion hole, and by tightening a screw into the screw hole from the opposite side of the operating unit body, the support plate is sandwiched between the operating unit body and the operating body, and the base end of the operating unit is the base end of the operating unit body. .

[0007] In one embodiment, the base end of the operating portion is formed of a resin washer as the sliding means. In one embodiment, a sliding tape serving as the sliding means is provided on the surface of the operation body.

[0008] In one embodiment, the outer surface of the shaft portion has a pair of parallel flat surfaces, The guide groove has a pair of parallel long sides, When the operation unit slides, the pair of planar portions are guided by the pair of long sides.

[0009] In one embodiment, a support frame is provided on the rear side of the ventilation hole, the support frame including an opening facing the ventilation hole and the support plate, The blade body is rotatably connected to the support frame so as to open and close the opening. In one embodiment, an airtight material is provided on the surface of the blade body, and when the blade body is in a closed position, the airtight material closes the ventilation hole from the rear surface.

[0010] In one embodiment, a panel having the vent (indoor vent) is provided adjacent to the outside of the support frame on the indoor facing surface of the door body, the panel is formed with a hole for receiving a base end of the operation unit, An airtight material is provided between the front surface of the support plate and the rear surface of the panel so as to surround the hole. Effect of the Invention

[0011] In the ventilation device of the present invention, the operating unit and the operating body are arranged to sandwich a support plate provided near the interior facing surface of the door body, and by providing a sliding means on the contact surface with the surface of the support plate, the ease of rotation of the blade body by the operating unit and the operating body is improved. In the present invention, the outer surface of the shaft portion has a pair of parallel flat surfaces, the guide groove has a pair of parallel long sides, and when the operating part slides, the pair of flat surfaces are guided by the pair of long sides, and the operating body slides while maintaining its posture (without tilting), allowing the blade body to open and close smoothly. In the present invention, a panel equipped with the indoor air vent is provided adjacent to the outside of the support frame on the indoor facing surface of the door body, and a hole is formed in the panel to receive the base end of the operating unit.An airtight material is provided between the front surface of the support plate and the back surface of the panel to surround the hole, thereby preventing air from leaking through the gap between the panel and the support plate and improving airtightness. [Brief description of the drawings]

[0012] [Figure 1] 1 is a front view of a door device equipped with a ventilation device according to an embodiment of the present invention, as viewed from the indoor side. [Diagram 2] 1 is a vertical cross-sectional view of a door assembly equipped with a ventilation device according to an embodiment of the present invention, with the left side being the exterior side and the right side being the interior side. [Diagram 3] 1 is a cross-sectional view of a door assembly equipped with a ventilation device according to an embodiment of the present invention, with the upper side facing the exterior side and the lower side facing the interior side. [Figure 4] FIG. 4 is a partially enlarged view of FIG. [Diagram 5] FIG. 2 is a view showing a ventilation device main body according to the embodiment. [Figure 6] A diagram showing the state in which a base frame with a cutout formed in it is attached to a door body. [Figure 7] FIG. 7 is a diagram showing a state in which a support frame (with blades attached) is attached to the base frame of FIG. 6. [Figure 8] FIG. 8 is a diagram showing a state in which a decorative panel (having an indoor side vent hole formed therein) is attached to the outside of the support frame in FIG. 7. [Figure 9] 3 shows a support frame according to the present embodiment. [Figure 10] 3 shows a blade body according to the present embodiment. [Figure 11] (A) shows a knob according to this embodiment, and (B) shows an operating body according to this embodiment. [Figure 12] 11A and 11B are diagrams showing the rotation of the blade body in conjunction with the up and down movement of the operating shaft. [Figure 13] 1A and 1B are diagrams for explaining an open position maintaining means (fitting means) for maintaining the open position of the blade body, the upper diagram showing the closed position and the lower diagram showing the open position. [Figure 14] FIG. 14 is an enlarged view of the upper right diagram in FIG. [Figure 15] 13A and 13B are diagrams showing a forced closing mechanism in an inoperative state when the blade body is in a closed position. [Figure 16] 13A and 13B are diagrams showing a forced closing mechanism in an inoperative state when the blade body is in an open position; [Figure 17] This shows the state in which the forced closing mechanism is activated from the state shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] [A] Overall configuration of a door device equipped with a ventilation device Fig. 1 is a front view of a door device (fully closed state) equipped with a ventilation device according to this embodiment, seen from the indoor side, Fig. 2 is a vertical cross-sectional view, and Fig. 3 is a horizontal cross-sectional view. The door device is composed of a vertical rectangular door frame 1 and a door body 2 that opens and closes the door frame 1. The door frame 1 is composed of an upper frame 1A, a leading edge vertical frame 1B, a trailing edge vertical frame 1C, and a lower frame 1D, and an airtight material 14 is provided around the door stop. The door body 2 is composed of an indoor side facing surface 20, an outdoor side facing surface 21, an upper end surface 22, a lower end surface 23, a leading edge side end surface 24, and a trailing edge side end surface 25, and when the opening is fully closed, the four peripheral edges of the indoor side facing surface 20 of the door body 2 are in close contact with the airtight material 14 around the four peripheral edges.

[0014] The door body 2 is provided with a ventilation device that allows communication between the inside and outside of the room when the opening is fully closed. The ventilation device according to this embodiment is provided in the lower part of the door body 2. The ventilation device includes an indoor side ventilation port (horizontal slit 131) formed in the lower part of the indoor side facing surface 20 of the door body 2, and a blade body 3 that is provided inside the door body 2 and opens and closes the indoor side ventilation port (horizontal slit 131). When the opening is fully closed, the blade body 3 is in an open position to allow communication between the indoor side ventilation port (horizontal slit 131) and the outdoor side ventilation port formed on the lower end surface 23 of the door body 2. In FIG. 2, the blade body 3 is in an open position (inclined position). In the internal space near the lower end of the door body 2, a dust filter 15 is provided above the outdoor air vent formed on the lower end surface 23. Outside air taken in from the outdoor air vent passes through the dust filter 15 and is supplied to the room from the indoor air vent. In the drawing, 150 is a filter cover.

[0015] The location where the indoor air vent is formed is not limited to the illustrated embodiment, and for example, an indoor air vent elongated vertically extending in the height direction of the door body 2 may be formed. In addition, the number of the blades 3 and the opening / closing direction are not limited to the illustrated embodiment.

[0016] [B] Ventilation device [B-1] Overall configuration The overall configuration of the ventilation device according to this embodiment will be described. The ventilation device according to this embodiment includes a vent hole (horizontal slit 131) formed on the interior facing surface 20 of the door body 2, a vane body 3 provided inside the door body 2 and rotatable between a closed position for closing the vent hole and an open position for opening the vent hole, a base frame 4 attached to an opening formed on the interior side of the door body 2, a support frame 5 fixed to the base frame 4 and to which the vane body 3 is rotatably attached, a knob 6 protruding from the interior facing surface 20 and slidable between a closed position and an open position, an operating body 7 that slides in conjunction with the sliding movement of the knob 6 to rotate the vane body 3, a case 8 provided on the back surface of the support frame 5, a movable body 9 provided within the case 8 and a spring 10 that biases the movable body 9 in the closing direction of the vane body 3, a fusible connecting element 11 that restricts the movement of the movable body 9 in the closing direction, and a fitting means 12 that maintains the open position of the vane body 3. In this embodiment, the vane body 3 and the operating body 7 are made of metal. All of the components of the ventilation device according to this embodiment are made of metal, except for airtight material 33, airtight material 54, resin washer 62, and sliding tape 73, which will be described later. In addition, the components other than those made of metal are made of flame-retardant material, making them fireproof.

[0017] Fig. 5 shows an assembly (ventilation device main body) consisting of the vane body 3, support frame 5, knob 6, operating body 7, and case 8. A movable body 9 and a spring 10 (not shown in Fig. 5) are housed inside the case 8. The ventilation device main body is located behind the indoor air vent (horizontal slit 131) and is provided inside the door body 2. The knob 6 provided on the indoor side of the door body 2 is slid up and down between a lower closed position and an upper open position, and in conjunction with this, the operating body 7 slides up and down, thereby rotating the vane body 3 between the closed position and the open position.

[0018] [B-2] Base frame In the lower part of the surface material 20a forming the interior facing surface 20 of the door body 2 according to this embodiment, and in the liner 20b to which the lower part of the surface material 20a is attached, a horizontally long opening extending in the width direction of the door body 2 is cut out, and this opening is used to install a ventilation device. As shown in Fig. 6, a horizontally rectangular frame-shaped base frame 4 is fixed with screws 4a on the inner surface of the liner 20b along the four peripheral edges of the opening formed in the lower part of the surface material 20a and the liner 20b. Four mounting pieces 40 are formed on the upper and lower sides of the base frame 4 so as to protrude into the opening, and a support frame 5 is attached to the base frame 4.

[0019] [B-3] Support frame As shown in FIG. 9, the support frame 5 has left and right rectangular openings 50 that are opened and closed by each of the blades 3, and a surface portion 51 between the left and right openings 50, and is attached to the door body 2 by fixing it to the screw holes 5a' of the mounting pieces 40 of the base frame 4 with screws 5a (as shown in FIG. 9, the support frame 5 has holes 5a'' for the screws 5a). A pair of protrusions 52 are formed on the left and right sides of the upper part of each opening 50 of the support frame 5, and a rotation axis that serves as the rotation fulcrum P of the blades 3 is provided in a hole 520 formed in the protrusions 52. A vertically long guide groove 53 is formed in the central surface portion 51 of the support frame 5 to receive the knob 6 and guide it up and down. When the support frame 5 is fixed to the base frame 4, the left and right openings 50 and the surface portions 51 face the openings in the base frame 4 (corresponding to the openings cut out and formed in the lower portion of the interior facing surface 20) (see Figure 7).

[0020] [B-4] Wing body As shown in Fig. 10, the blade body 3 is composed of a main body 30 made of a horizontally rectangular plate material, and left and right side edges 31 formed integrally on the upper left and right sides in the longitudinal direction of the main body 30. The side edges 31 have portions that protrude upward from the upper end of the main body 30, and holes 310 are formed in these portions, through which the rotation shaft of the blade body 3 is provided. The blade body 3 according to this embodiment is able to rotate between a closed position (vertical position) and an open position (inclined position) with the upper end side as a rotation fulcrum P by overlapping the upper portion of the side edges 31 with the protruding pieces 52 of the support frame 5 and aligning the holes 310 and 520 to connect with the rotation shaft.

[0021] A guide groove 32 is formed in one side 31 of the blade body 3 with a predetermined shape and posture, located below the hole 310. The one side 31 is, so to speak, the driving side 31, and in conjunction with the up and down movement of an operating shaft 75 received in the guide groove 32, the operating shaft 75 acts on the guide groove 32 to rotate the side 31 (i.e., the blade body 3). The configuration of the guide groove 32 and the functions of the guide groove 32 and the operating shaft 75 will be described in detail later.

[0022] [B-5] Knob As shown in Fig. 11(A), the knob 6 according to this embodiment includes a knob body 60 and a shaft portion 61, and a resin washer 62 is provided on the base end side of the knob body 60. A screw hole 63 is formed in the shaft portion 61. The knob body 60 is housed in a vertically elongated hole 130 formed in the central portion in the width direction of the decorative panel 13 so as to be movable up and down, and the resin washer 62 at the base end of the knob body 60 is close to or in contact with the surface of the face portion 51 of the support frame 5. The shaft portion 61 of the knob 6 passes through the guide groove 53 of the face portion 51 of the support frame 5 and the insertion hole 72 of the face portion 70 of the operating body 7.

[0023] [B-6] Operating body As shown in FIG. 11B, the operating body 7 according to this embodiment has a U-shaped cross section formed of a surface 70 and left and right side edges 71, and a vertical rectangular insertion hole 72 through which the shaft 61 of the knob 6 is inserted is formed slightly below the center of the width of the surface 70. Sliding tapes 73 are attached to the surface of the surface 70 of the operating body 7, located on both the left and right sides of the insertion hole 72. A hole 74 through which the operating shaft 75 is inserted is formed at the upper end of the pair of side edges 71. A notch 710 is formed at the upper edge of the side edges 71, located closer to the surface 70 than the hole 74. The provision of the notch 710 prevents the operating body 7 from contacting the rotation shaft (the shaft forming the rotation fulcrum P) when the operating body 7 moves upward from the first position to the second position. An operating shaft 75 is provided so as to span horizontally between the left and right side edges 71 of the operating body 7, and the operating shaft 75 moves up and down in accordance with the up and down movement of the operating body 7. In the illustrated embodiment, the sliding tapes 73 are provided on the left and right of the insertion hole 72, but sliding tapes may also be provided in the areas above and below the insertion hole 72. This increases the sliding surface to improve the operability of the knob 6, and the surrounding sliding tapes 73 surround the insertion hole 72 (and thus the guide groove 53), thereby improving airtightness.

[0024] [B-7] Case A case 8 is fixed to the back surface of the face portion 51 of the support frame 5. The case 8 according to this embodiment is composed of a pair of side walls 80, an upper wall 81, a lower wall 82, and a rear wall 83, and is fixed with screws 8a by abutting a bent edge 810 of the upper wall 81 and a bent edge 820 of the lower wall 82 against the back surface of the face portion 51 of the support frame 5 (as shown in FIG. 9, holes 8a' for the screws 8a are formed in the face portion 51 of the support frame 5). The side edge 71 of the operating body 7 is adjacent to the outside of the side wall 80 of the case 8, and the side wall 80 is formed with a vertically extending elongated hole 800 located at the overlapping portion of the side edge 71 and the side wall 80, and the vertical movement of the operating shaft 75 within the elongated hole 800 is permitted.

[0025] [B-8] Decorative panel (interior ventilation hole) In this embodiment, the indoor air vent provided on the indoor facing surface 20 is composed of multiple horizontally long slits 131 formed in the decorative panel 13 provided on the indoor facing surface 20. FIG. 8 shows a state in which the decorative panel 13 is attached to the state in FIG. 7. The decorative panel 13 is a horizontally rectangular plate extending in the width direction of the door body 2, and is fixed to the indoor facing surface 20 (surface material 20a) and the liner 20b (screw hole 13a') with screws 13a so as to cover the support frame 5 and the left and right blade bodies 3 attached to the support frame 5. A knob 6 is protrudingly provided at the center part in the width direction of the decorative panel 13, and the knob 6 is movable up and down within a vertically long hole 130 formed in the center part in the width direction of the decorative panel 13. A plurality of horizontally long slits 131 are formed in the decorative panel 13, located on both the left and right sides of the vertically long hole 130.

[0026] [C] Mounting structure of the operating mechanism The operation mechanism according to this embodiment comprises a knob 6 that is slidable between a closed position and an open position, and an operating body 7 that rotates the blade body 3 in conjunction with the sliding movement of the knob 6 between the closed position and the open position. The knob 6 and the operating body 7 are arranged such that the resin washer 62 at the base end of the knob main body 60 is located on the front side of the surface portion 51 of the support frame 5, and the surface portion 70 of the operating body 7 is located on the back side of the surface portion 51 of the support frame 5, sandwiching the surface portion 51 of the support frame 5.

[0027] The shaft portion 61 of the knob 6 is inserted through a guide groove 53 formed in the surface portion 51 of the support frame 5 and an insertion hole 72 formed in the surface portion 70 of the operating body 7, and by tightening a screw 64 into a screw hole 63 formed in the shaft portion 61 from the opposite side of the knob body 60, the surface portion 51 of the support frame 5 is sandwiched between the surface portion 70 of the operating body 7 and a plastic washer 62 at the end of the knob body 60.

[0028] In this embodiment, with the knob 6 and the operating body 7 sandwiching the surface portion 51 of the support frame 5, the resin washer at the base end of the knob main body 60 is in proximity to or in contact with the front surface of the surface portion 51, and the sliding tape 73 provided on the surface portion 70 of the operating body 7 is in proximity to or in contact with the rear surface of the surface portion 51. The support frame 5 according to this embodiment is made of metal, and the knob 6 and the operating body 7 are in proximity to or in contact with the surface portion 51 of the support frame 5 via the sliding means (the resin washer 62, the sliding tape 73), thereby reducing friction caused by contact when the knob 6 and the operating body 7 slide and move, improving operability.

[0029] The outer surface of the shaft portion 61 of the knob 6 has a pair of parallel flat surfaces (vertical surfaces) 610, and the guide groove 53 has a pair of parallel long sides (vertical sides) 530, so that when the knob 6 slides, the pair of flat surfaces 610 are guided by the pair of long sides 530. The shaft portion 61 of the knob 6 has a cross section that abuts or is close to the four edges of the insertion hole 72 (the flat surfaces 610 of the shaft portion 61 abut against the side edges of the insertion hole 72, and the upper and lower ends of the shaft portion 61 abut against the upper and lower edges of the insertion hole 72, respectively), so that as the knob 6 slides, the operating body 7 slides close to the back surface of the surface portion 51 of the support frame 5. When the knob 6 slides, the flat surface (vertical surface) 610 of the shaft 61 is guided vertically along the long side (vertical side) 530, so that the operating body 7 moves up and down without tilting and while maintaining a vertical posture, and the operating shaft 75 moves up and down in a stable manner while maintaining a horizontal posture, thereby allowing the blade body 3 to open and close smoothly.

[0030] [D] Airtight structure of ventilation device The ventilation device allows communication between the inside and outside of the room by opening the vane body 3 in an open position when the opening is fully closed, but it is necessary to ensure airtightness when the vane body 3 is in a closed position. An airtight material 33 is provided over the entire surface of the main body 30 of the vane body 3 according to this embodiment. When the vane body 3 is in a closed position, the airtight material 33 provided on the main body 30 of the vane body 3 abuts against the rear surface of the decorative panel 13 so as to block the indoor side air vent (multiple horizontal slits 131) from the inside, thereby blocking the gap between the main body 30 of the vane body 3 and the indoor side air vent (horizontal slits 131), improving the airtightness when the opening is fully closed.

[0031] 5 and 7, an airtight material 54 is provided on the central surface 51 of the support frame 5 so as to surround the guide groove 53. When the decorative panel 13 is attached, the airtight material 54 is positioned between the central surface 51 of the support frame 5 and the central part of the width direction of the back surface of the decorative panel 13 so as to surround the shaft portion 61 of the knob 6, thereby forming an airtight space around the shaft portion 61 and preventing air from leaking through the gap between the decorative panel 13 and the surface portion 51 of the support frame 5, thereby improving airtightness.

[0032] [E] Operating mechanism The ventilation device according to this embodiment is equipped with an operating mechanism that rotates the vane body 3 in conjunction with the sliding movement of the operating mechanism (knob 6 and operating body 7). The operating mechanism according to this embodiment is composed of an operating shaft 75 that moves up and down with the up and down movement of the operating mechanism, and a guide groove 32 that is provided on the side edge 31 of the vane body 3 and receives the operating shaft 75. The operating shaft 75 that moves up and down (vertically moves) acts on the guide groove 32 to rotate the side edge 31 (i.e., the vane body 3). In this embodiment, two vane bodies 3 on the left and right sides are rotated by a common operating mechanism. That is, in FIG. 5, the guide groove 32 is formed on the right side edge 31 of the left vane body 3, and the guide groove 32 is formed on the left side edge 31 of the right vane body 3.

[0033] Both longitudinal ends of the operating shaft 75 pass through elongated holes 800 formed in the opposing side walls 80 of the case 8, protrude from holes 74 in the side edge 71 of the operating body 7, and are received in guide grooves 32 in one side edge 31 of each blade body 3 (see Figures 4 and 5).

[0034] As shown in Fig. 10, the guide groove 32 formed on one side 31 of the blade body 3 is composed of an arc-shaped operating groove 320 and an engagement groove 321 extending downward from the lower end of the operating groove 320. The engagement groove 321 is located on the side away from the pivot point P of the blade body 3, and the operating groove 320 extends from the engagement groove 321 in a direction approaching the pivot point P. The operating shaft 75 has a circular cross section, and the engagement groove 321 is deep enough to accommodate more than half of the cross section of the operating shaft 75. In conjunction with the up and down movement of the operating shaft 75 received in the guide groove 32, the operating shaft 75 acts on the operating groove 320 of the guide groove 32 to rotate the side 31 (i.e., the blade body 3).

[0035] The action of the guide groove 32 and the operating shaft 75 will be described with reference to Fig. 12. In the leftmost drawing of Fig. 12, the blade body 3 is in the closed posture, the knob 6 and the operating body 7 are in the closed position (lower end position), and the operating shaft 75 is in the lower end position. When the operating shaft 75 is in the lower end position, the operating shaft 75 is located in the locking groove 321 of the guide groove 32 on the side edge 31 of the blade body 3 and is in a locked state. In this state, even if an opening pressure (horizontal load) acts on the blade body in the closed posture, the locking groove 321 (part 321') is locked to the operating shaft 75, and the rotation of the blade body 3 is restricted.

[0036] 12, when the knob 6 and the operating body 7, which are in the closed position, are slightly moved upward, the operating shaft 75 also moves upward slightly with the upward movement of the operating body 7, and disengages from the locking groove 321 of the guide groove 32. In this state, the operating shaft 75 has not yet been guided by the operating groove 320 of the guide groove 32, and the blade body 3 maintains the closed position.

[0037] When the knob 6 and the operating body 7 are moved further upward, the operating shaft 75 pushes up one end side of the operating groove 320 (the side closer to the locking groove 321), causing the blade body 3 to begin rotating from a vertical position around the rotation fulcrum P, and as the knob 6, the operating body 7, and the operating shaft 75 move further upward, the blade body 3 moves toward the other end side of the operating groove 320 (the side away from the locking groove 321) while rotating in the opening direction.

[0038] In the rightmost drawing in Fig. 12, the blade body 3 is in the open posture, the knob 6 and the operating body 7 are in the open position (upper end position), and the operating shaft 75 is in the upper end position. When the operating shaft 75 is in the upper end position, it is located at the end of the operating groove 320 of the guide groove 32 on the side edge 31 of the blade body 3. To close the blade body 3 in the open posture, the knob 6 and the operating body 7, which are in the open position (upper end position), are moved downward, and the movement of the blade body 3 follows the flow from the rightmost drawing to the leftmost drawing in Fig. 12.

[0039] [F] Open position holding means In this embodiment, as the operating mechanism (knob 6 and operating body 7) moves upward, the blade body 3 assumes an open position, which is an inclined position with the upper end as a pivot point P, so that the blade body 3 in the open position can be subjected to its own weight in the closing direction. In this embodiment, when the blade body 3 assumes the open position, the retaining force of the fitting means 12 maintains the blade body 3 in the open position.

[0040] As shown in FIG. 13, a first element 120 of the fitting means 12 is provided on the upper portion of the face portion 70 of the operating body 7, and a second element 121 of the fitting means 12 is provided on the lower surface of the upper wall 81 of the case 8. When the operating body 7 moves to the upper movement position (i.e., when the blade body 3 is in the open position), the first element 120 and the second element 121 fit together to hold the open position of the blade body 3. The fitting means 12 according to this embodiment is a so-called resin catch, but the shape and material of the first element and the second element of the fitting means are not limited. The fitting state of the fitting means 12 is such that it can be released by a predetermined downward force, and the fitting state can be released, for example, by manually moving the knob 6 downward.

[0041] [G] Forced closing mechanism If a fire breaks out when the vane body 3 of the ventilation device is in an open position, the indoors and outdoors are communicated through the indoor side ventilation port (horizontal slit 131), which is disadvantageous in terms of fire prevention. The ventilation device according to this embodiment is equipped with a forced closing mechanism that forcibly closes the vane body 3 in an open position in the event of a fire. As shown in Figs. 15 to 17, the forced closing mechanism according to this embodiment is composed of a movable body 9, a fixed plate 84, a spring 10, and a meltable connecting element 11. In this embodiment, the meltable connecting element 11 is composed of a thermal fuse that functions as a connecting element at room temperature and melts down to release the connection when exposed to heat during a fire.

[0042] A movable body 9 is provided in the case 8 so as to be movable in the vertical direction. As shown in Figs. 15 to 17, the movable body 9 has a U-shape in side view, which is formed from a surface portion 90, an upper side 91, and a lower side 92. A guide shaft 85 is provided extending vertically between the upper wall 81 and the lower wall 82, and the guide shaft 85 is inserted through the upper side 91 and the lower side 92, so that the movable body 9 moves vertically along the guide shaft 85. A fixed plate 84 is fixed extending horizontally between the left and right side walls 80. In the illustrated embodiment, the left and right rising sides, the surface portion, and the left and right rising sides of the U-shaped member are fixed to the inner surfaces of the left and right side walls 80. The fixed plate 84 is located between the upper side 91 and the lower side 92, and the guide shaft 85 is inserted through it. A spring 10 is provided between the fixed plate 84 and the lower side 92 in a vertical position and in a compressed state. The rise dimension of the upper side 91 relative to the surface portion 90 is greater than the rise dimension of the lower side 92 , and the upper side 91 is located above the operating shaft 75 .

[0043] As shown in Figure 15, when the operating body 7 is in the closed position (lower end position), the operating shaft 75 in the first position (lower end position) and the upper side 91 of the movable body 9 are spaced apart, and as shown in Figure 16, when the operating body 7 is in the open position, the operating shaft 75 in the second position (upper end position) and the upper side 91 of the movable body 9 are close to each other above the operating shaft 75 in the second position (upper end position).

[0044] The surface portion 90 of the movable body 9 is close to the inner surface of the rear wall 83 of the case 8, and a vertically long hole 830 is formed in the rear wall 83, and the surface portion 90 of the movable body 9 is exposed. The rear wall 83 of the case 8 and the surface portion 90 of the movable body 9 are connected by a fusible connecting element 11. More specifically, the upper end of the fusible connecting element 11 is fixed to the rear wall 83 of the case 8 by a screw 110, and the lower end of the fusible connecting element 11 is fixed to the surface portion 90 of the movable body 9 by a screw 111 that passes through the vertically long hole 830. The movable body 9 is connected to the case 8 by the fusible connecting element 11, and thus the movement of the movable body 9 due to the biasing force of the spring 10 is restricted when there is no fire (FIGS. 15 and 16).

[0045] If the heat of a fire causes the fusible connecting element 11 to melt while the blade body 3 is in the open position, the movable body 9 is separated from the case 8 and becomes free, the compressed spring 10 expands downward, the movable body 9 moves downward, and the upper side 91 of the movable body 9 forcibly moves the operating shaft 75, which is in the second position, to the first position, and the blade body 3, which is in the open position, changes to the closed position. At this time, the biasing force of the spring 10 is greater than the holding force of the fitting means 12, and the fitting state of the fitting means 12 is released.

[0046] As shown in FIG. 15, when the operating body 7 is in the closed position (lower end position), the upper edge 91 of the movable body 9 is spaced a predetermined distance above the operating shaft 75, which is in the first position (lower end position), and the lower edge 92 of the movable body 9 is spaced a predetermined distance above the upper surface of the lower wall 82 of the case 8. When the fusible connecting element 11 is fused while the blade body 3 is in the closed position, the upper edge 91 moves in the direction approaching the operating shaft 75, and the lower edge 92 moves in the direction approaching the operating shaft 75, but the upper edge 91 does not hit the operating shaft 75 hard, and the lower edge 92 does not hit the lower wall 82 hard, resulting in damage to the components. [Explanation of symbols]

[0047] 2 Door body 20 Interior facing surface 3. Wing body 30 Main unit 31 Side (side plate) 32 Guide groove 320 Operating groove 321 Locking groove 33 Airtight materials 5 Support Frame 51 Surface part (support plate) 53 Guide groove 530 Long side 54 Airtight materials 6 Knob (operation part, operation mechanism) 60 Knob body (operation unit body) 61 Shaft 610 Plane section 62 Resin washer (base end, sliding means) 63 Screw hole 64 Screw 7 Operating body (operating mechanism) 72 Insertion hole 75 Working shaft 8 Cases 80 side wall 81 Upper Wall 82 Lower Wall 83 Back wall 84 Fixing plate (plate) 830 Vertical hole 9 Movable body 90 area 91 Top side (second side) 92 Bottom side (first side) 10 Spring (biasing means) 11 Fusible connection element (movement restriction means, movement restriction release means) 12 Fitting means (open position holding means) 120 1st element 121 Second Element 13 Decorative panel (panel) 130 Vertical hole (hole) 131 Horizontal slit (vent) P Pivot point (rotation axis)

Claims

1. A ventilation hole formed in the door body; a vane body provided inside the door body and rotatable between a closing position for closing the vent hole and an opening position for opening the vent hole; An operation part provided on the door body and slidable between a closed position and an open position; an operating body that rotates the blade body in accordance with the sliding movement of the operating unit; Equipped with The operation unit and the operation body are provided to sandwich a support plate provided near the ventilation hole, At least one of the surface of the support plate and the base end of the operation unit adjacent to or in contact with the surface, and / or A sliding means is provided on at least one of the back surface of the support plate and the surface of the operation body adjacent to or in contact with the back surface. Ventilation device.

2. The operation unit includes an operation unit body and a shaft portion having a screw hole formed therein, The support plate has a guide groove formed of a long hole extending in the moving direction of the shaft portion, An insertion hole for the shaft portion is formed in the surface portion of the operation body, The shaft portion is inserted through the guide groove and the insertion hole, and the support plate is sandwiched between the operation unit body and the operation body by fastening a screw into the screw hole from the opposite side of the operation unit body, and the base end of the operation unit is the base end of the operation unit body.

2. The venting device of claim 1.

3. 3. The ventilation device according to claim 1, wherein the base end of the operating portion is formed of a resin washer as the sliding means.

4. 3. The ventilation device according to claim 1, wherein the surface of the operating body is provided with a sliding tape as the sliding means.

5. The outer surface of the shaft portion has a pair of parallel flat surfaces, The guide groove has a pair of parallel long sides, When the operation unit slides, the pair of planar portions are guided by the pair of long sides.

3. A venting device according to claim 2.

6. a support frame is provided on the rear side of the ventilation hole, the support frame including an opening facing the ventilation hole and the support plate; The blade body is rotatably connected to the support frame so as to open and close the opening.

2. The venting device of claim 1.

7. A panel having the vent hole is provided adjacent to the outside of the support frame on the interior side of the door body, the panel is formed with a hole for receiving a base end of the operation unit, An airtight material is provided between the front surface of the support plate and the rear surface of the panel so as to surround the hole.

7. A venting device according to claim 6.

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