JP5095498B2 - Ceiling ventilation - Google Patents

Description

  The present invention relates to a ceiling ventilator attached to an attic side, and more particularly to an improvement in a resin suction panel attachment structure covering a lower surface opening of a main body case.

  The ceiling ventilator is provided on the attic side, and has a main body case with the lower surface opening facing the opening of the ceiling, and a blower that sucks indoor air from the lower surface opening and exhausts it from the attic side is provided in this main body case It has been. The lower surface opening of the main body case is covered with a resin suction panel.

  A mounting portion is provided on the inner surface side of the suction panel, and a fixing bracket is fixed to the mounting portion with a screw. Then, a loop-shaped winding portion formed in the central portion of the spring material is locked to the fixing metal, and two springs having urging forces in directions away from each other are separated from the winding portion of the spring material. The arm is extended.

The two arm portions of the spring material are inserted into the main body case and locked to the main body side locking portion, so that the suction panel is pulled toward the main body case side by the urging force and attached (for example, , See Patent Document 1).
JP 2000-130816 A

  By the way, since the force that pulls the suction panel in the direction of the main body case always acts on the fixing bracket attached to the attachment part of the suction panel, the attachment part may be damaged if the attachment part of the suction panel deteriorates due to long-term use. . When the mounting portion is damaged in this manner, the fixture is detached from the mounting portion of the suction panel, and the suction panel may fall.

  The present invention has been made paying attention to the above circumstances, and its purpose is to drop the suction panel even if the fixture is detached from the suction panel mounting portion due to deterioration of the suction panel mounting portion or the like. An object of the present invention is to provide a ventilation device for a ceiling that is free from any problems.

  In order to solve the above-mentioned problem, the invention described in claim 1 is provided so as to cover a main body case having a lower surface opening and having a blower and a main body side locking portion inside, and a lower surface opening of the main body case. , A resin suction panel that integrally forms a mounting portion on the inner surface side, a metal fixture that is attached to the mounting portion and has a locking portion, and a central portion formed on the locking portion of the fixing device The looped winding portion is locked, and the two arm portions extending from the winding portion and having a biasing force in a direction away from each other are locked to the main body side locking portion in the main body case. A spring member that holds the suction panel, and a connecting member that connects the fixture and the suction panel, and a locking portion of the fixture is a substrate portion provided along the suction panel; The spring is provided with a gap between the substrate portion and the spring. A locking piece inserted from the distal end side into the loop-shaped winding portion, and the gap includes a first gap portion for inserting the winding portion of the spring material and a winding portion of the spring material. And a second gap portion for locking, the gap size of the first gap portion is A1, the gap size of the second gap portion is A2, the wire diameter of the spring material is B, and the spring material When the width dimension of the winding portion is C, the relationship is B <A1 <C <A2.

  According to the present invention, even if the fixture fixed to the suction panel is detached from the attachment portion of the suction panel, the suction panel can be prevented from falling, which is safe.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a ceiling ventilator 1 according to an embodiment of the present invention. The ceiling ventilator 1 is arranged on the ceiling back 3 side of a room 2. An opening 5a is formed in the ceiling plate 5 constituting the ceiling of the room 2, and a mounting frame 6 is provided on the periphery of the opening 5a so as to be located on the ceiling back 3 side. The ceiling ventilation device 1 is attached to the attachment frame 6. Generally, the mounting frame 6 is composed of a frame made of wood.

  The ceiling ventilator 1 includes a tubular main body case 8 made of a steel material. An upper surface portion 8a of the main body case 8 is closed and a lower surface opening 9 is formed on the lower surface. The main body case 8 is inserted and attached to the opening 6 a of the attachment frame 6 from below. A flange 10 projecting sideways is integrally provided on the peripheral edge of the lower end portion of the main body case 8, and the flange 10 directly contacts the lower surface of the mounting frame 6 from below and is attached to the mounting frame 6 by means such as screwing. Fixed to.

  A motor 12 is attached to the upper surface portion 8a in the main body case 8, and a fan 13 comprising a centrifugal fan is attached to the rotating shaft 12a. The motor 12 and the fan 13 rotated by the motor 12 constitute a blower 14. A partition plate 17 having an intake port 16 is provided in the main body case 8 in the vicinity of the lower portion of the fan 13. A lower part of the partition plate 17 is provided with a spring material hooking part (main body side locking part) 19 on the main body side for locking a spring material 34 described later. Further, an exhaust port 18 is formed in the side surface portion of the main body case 8. A duct 15 communicating with the outdoors is connected to the exhaust port 18.

  On the other hand, a suction panel 20 made of synthetic resin is disposed below the main body case 8 so as to cover the opening 5a of the ceiling plate 5 from below. The suction panel 20 has a circular shape and includes a grill 21 having a large number of ventilation holes 21a.

  In the above-described configuration, when the fan 13 is rotationally driven by the motor 12 of the blower 14 a, the air in the room 2 is caused to flow from the vent 21 a of the suction panel 20 to the lower surface opening 9 of the main body case 8 by the fan 13. The air is sucked into the main body case 8 through the air inlet 16 (see arrow a), and the sucked air is discharged from the exhaust port 18 on the side surface of the main body case 8 to the duct 15 in the ceiling 3 (see arrow b).

  By the way, as shown in FIGS. 2 and 3, a mounting portion 23 is integrally formed of resin at a substantially central portion on the upper surface side (main body case side) of the suction panel 20, and the mounting portion 23 is made of metal. A fixture (hereinafter referred to as a fixture) 24 is attached. The fixing bracket 24 has a locking portion 28, and the locking portion 28 is configured to have a substrate portion 25, a locking piece 26, and a fixing piece 27 as shown in FIG. The fixing bracket 24 is fixed by screws 29 with the base plate portion 25 extending along the upper surface portion of the suction panel 20 and the fixing piece 27 overlapped with the upper surface portion of the attachment portion 23. Further, an attachment hole 24 a for attaching one end portion of a connecting rod 37 described later is formed on one end portion side of the fixing bracket 24.

  A gap 30 is formed between the substrate portion 25 of the fixing bracket 24 and the locking piece 26. The gap 30 includes a first gap portion 31 for inserting a winding portion for inserting a loop-like winding portion 34a of a spring material 34, which will be described later, and a second gap portion 32 for locking the winding portion. It is constituted by.

  As shown in FIGS. 1 to 3, a spring material 34 is locked to the locking piece 26 of the fixing bracket 24. The spring member 34 has a loop-shaped winding portion 34a at the center thereof, and two arm portions 34b extend from the winding portion 34a, and the two arm portions 34b are attached in a direction away from each other. Has power.

  As shown in FIG. 1, both arms 34b of the spring member 34 engage with the spring hooking portion 19 on the main body side, and the suction panel 20 is pulled upward by the urging force of the arms 34b in the direction away from each other. The opening 5 a of the ceiling plate 5 is covered by bringing the peripheral edge portion into contact with the ceiling plate 5.

  On the other hand, as shown in FIG. 4, the gap dimension of the first gap part 31 is A1, the gap dimension of the second gap part 32 is A2, and as shown in FIG. When the diameter is B and the width dimension of the winding portion 34a of the spring member 34 is C, the relationship B <A1 <C <A2 is satisfied.

  That is, by setting B <A1, the winding portion 34a can pass through the first gap portion 31 when the spring material 34 is mounted, and by setting A1 <C, the mounting portion of the suction panel 20 is provided. When the fixing bracket 24 is rotated as shown in FIG. 6 when 23 is broken, the winding portion 34a of the spring material 34 is restricted from coming out of the first gap portion A1.

  Note that C <A2 is set so that the fixing bracket 24 can rotate as shown in FIG. 6 when the mounting portion 23 of the suction panel 20 is damaged.

  In addition, a notch 33 is formed in the locking piece 26 of the fixing bracket 24 so as to be positioned between the first gap 31 and the second gap 32. By inserting a part of the winding portion 34a of the spring material 34 into the cutout portion 33, the removal of the winding portion 34a of the spring material 34a can be more reliably regulated.

  Further, as shown in FIG. 2, one end of a connecting rod 37 as a connecting member is fixed to the mounting hole 24a of the fixing bracket 24 described above. A hook-shaped hook 37 a is formed at the other end of the connecting rod 37, and the hook 37 a is hooked on the reinforcing bar 21 b of the grill 21 of the suction panel 20. That is, the fixture 24 and the suction panel 20 are connected via the connecting rod 37. The connecting rod 37 is made of a metal steel wire (wire).

  Next, the attachment procedure of the suction panel 20 will be described.

  First, the fixing bracket 24 is prepared, and one end of the connecting rod 37 is inserted into the mounting hole 24a of the fixing bracket 24, and the insertion end is bent and fixed with pliers or the like. Next, the hooking portion 37 a on the other end side of the connecting rod 37 is hooked on the reinforcing bar 21 b of the grill 21 of the suction panel 20 to connect the fixture 24 and the suction panel 20. Thereafter, the fixing piece 27 of the fixing bracket 24 is superposed on the upper surface portion of the attachment portion 23 of the suction panel 20 and fixed with screws 29. After this fixing, the first gap portion 31 is passed through the loop-shaped winding portion 34a of the central portion of the spring member 34 to the locking piece 26 of the fixing bracket 24 so as to be positioned in the second gap portion 32. Stop. After locking the loop-shaped winding portion 34a of the spring material 34 in this manner, the two arm portions 34b of the spring material 34 are deformed in a direction approaching each other against the biasing force. It is inserted into the main body case 8 from the lower surface opening 9 and engaged with the spring hook 19 on the main body side. From this state, the suction panel 20 is pushed into the main body case. By this pushing, the two arm portions 34b of the spring member 34 expand in a direction away from each other by its urging force, and the suction panel 20 is pulled upward by this force and fixedly held. Thus, the attachment of the suction panel 20 is completed.

  By the way, since the force which draws the suction panel 20 toward the main body case always acts on the fixing bracket 24 attached to the attachment portion 23 of the suction panel 20, if the attachment portion 23 of the suction panel 20 deteriorates due to long-term use, the attachment portion 23 may be damaged. When the mounting portion 23 is damaged, as shown in FIG. 6, the screw 29 is removed, the fixing bracket 24 is detached from the mounting portion 23, and the suction panel 20 is about to fall. However, at this time, the winding portion 34a of the spring member 34 is caught in the first gap portion 31 between the locking piece 26 and the substrate portion 25 to prevent the spring member 34 from coming off, and as shown in FIGS. In addition, the suction panel 20 is suspended via the connecting rod 37. Thereby, the fall of the suction panel 20 is prevented. Note that the fixing bracket 24, the spring material 34, and the connecting rod 37 are all made of metal and do not deteriorate. Further, the reinforcing bar 21b of the grill 21 of the suction panel 20 to which the hooking portion 37a of the connecting rod 37 is hooked is made of resin. However, since this portion is usually a place where no force is applied at all, it does not deteriorate so much. In addition, since the suction panel 20 is made of resin and is lightweight, even if the suction panel 20 is suspended by the reinforcing bar 21b for a certain period, this portion is not damaged.

  As described above, according to this embodiment, when the attachment portion 23 of the suction panel 20 is damaged, the winding portion 34a of the spring material 34 is hooked on the first gap portion 31 of the fixing bracket 24 and is prevented from coming off. In addition, since the suction panel 20 is suspended by the main body side hooking portion 19 of the main body case 8 via the connecting rod 37, the suction panel 20 can be prevented from dropping and safety can be improved.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. For example, in the present embodiment, the hooking portion 37a of the connecting rod 37 is hooked on the reinforcing bar 21b of the grill 21 of the suction panel 20. However, the hooking portion 37a is hooked on the bar of the grill 21 or is previously provided with a hook locking portion. You may be hooked on this. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

The block diagram which shows the exhaust apparatus for ceilings which is one embodiment of this invention. The perspective view which shows the holding mechanism of the suction panel of FIG. The side view which shows the holding mechanism of the suction panel of FIG. The side view which shows the fixing metal fitting of FIG. The figure which shows the spring material of FIG. The figure which shows the state from which the attachment part of the suction panel of FIG. 3 was damaged and the fixture was removed. The perspective view which shows the state by which the suction panel was suspended by the fixing metal fitting of FIG. The side view which shows the state by which the suction panel was suspended through the connection rod by the fixing metal fitting of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Attic, 5 ... Ceiling board, 5a ... Opening part, 8 ... Main body case, 9 ... Lower surface opening part, 14 ... Fan, 19 ... Spring hook part (main body side latching part) of a main body side, 20 ... Suction panel, DESCRIPTION OF SYMBOLS 23 ... Mounting part, 24 ... Fixing metal fitting, 25 ... Board | substrate part, 26 ... Locking piece, 28 ... Locking part, 30 ... Gap, 31 ... 1st gap part, 32 ... 2nd gap part, 33 ... Notch 34, spring material, 34a, winding portion, 34b, arm portion, 37, connecting rod (connecting material), A1 ... gap size of the first gap portion, A2 ... gap size of the second gap portion, B … The wire diameter of the spring material, C… the width dimension of the winding portion of the spring material.

Claims (2)

A main body case having a lower surface opening and a blower and a main body side locking portion inside,
A resin suction panel that is provided so as to cover the lower surface opening of the main body case and integrally forms a mounting portion on the inner surface side;
A metal fixture attached to the attachment portion and having a locking portion;
A loop-shaped winding portion formed in the central portion is locked to the locking portion of the fixture, and two arm portions extending from the winding portion and having a biasing force in a direction away from each other are connected to the main body. A spring material which holds the suction panel by being locked to the main body side locking portion in the case;
Comprising a connecting member for connecting the fixture and the suction panel;
The locking part of the fixture is provided with a gap between the board part provided along the suction panel and the board part, and from the tip side in the loop-shaped winding part of the spring material A locking piece to be inserted,
The gap is composed of a first gap part for inserting the winding part of the spring material and a second gap part for locking the winding part of the spring material,
When the gap dimension of the first gap part is A1, the gap dimension of the second gap part is A2, the wire diameter of the spring material is B, and the width dimension of the winding part of the spring material is C, A ceiling ventilator having a relationship of <A1 <C <A2.   The ceiling ventilator according to claim 1, wherein a notch portion is formed in the locking piece between the first gap portion and the second gap portion.

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