JP4554246B2 - Decorative panel for ventilation and exhaust fan - Google Patents

Description

  The present invention relates to a decorative panel for supplying and exhausting air and a ventilation fan including the decorative panel.

  Along with the revision of the Building Standard Law, improvement in workability, downsizing of packaging, and cost reduction are required as the number of ventilation fans installed increases. Some ventilation fans are mounted on the ceiling of a building and exhaust and supply air through ducts. This type of ventilation fan is provided with a decorative panel for air supply / exhaust that constitutes a substantial air supply / exhaust portion on the indoor side. The decorative panel is suspended and supported on the main body of the ventilating fan by a torsion spring in which locking legs extend in an open leg shape from both ends of the torsion ring portion. In addition, there exist what was shown by patent document 1 and patent document 2 as this kind of prior art.

No. 6-5546 JP 2000-257948 A

  Conventional decorative panels for air supply / exhaust that are suspended and supported by the main body of a ventilation fan with a torsion spring have a torsion spring protruding on the back in a shape close to the mounted state, or lying on the outside, There are those that are installed upright. If the torsion spring protrudes on the back, it can be attached to the main body of the ventilation fan as it is, and the workability is good. As a result, the overall packaging is bulky. For the torsion spring that can fall outward, the workability is slightly reduced because an operation for raising the torsion spring is required, but the packaging form becomes smaller. However, since the torsion spring that has fallen out also protrudes from the outer edge of the decorative panel, the packaging form still increases accordingly. Further, since the holding member for holding the torsion spring is made of metal and screwed to the decorative panel, there is a problem that it is difficult to automate assembly and the manufacturing cost is high.

  The present invention has been made in order to solve the above-described problems, and the object of the present invention is to obtain a decorative panel for air supply / exhaust that can reduce the packaging form and reduce the manufacturing cost. It is to obtain a decorative panel with good ventilation performance. Moreover, it aims at obtaining the ventilation fan provided with the decorative panel.

In order to solve the above-mentioned problems, the present invention has torsion springs in which locking legs extend like two legs from both ends of the torsion ring part at two opposite positions on the back, and elastically by the locking legs of the torsion spring. A rectangular tube provided with two inner and outer holding pieces and two sides on both sides of the decorative panel for air supply / exhaust that is suspended and supported so as to hold the torsion ring portion of the torsion spring so as to be sandwiched from both sides in the axial direction The holding structure is integrally formed on the back, and the support pin, which is horizontally inserted between the two holding pieces inside and outside the holding structure, is inserted into the torsion ring part so that the torsion spring protrudes to the back side. together is held by the holding structure, those inner and out two holding pieces configured to a size through which the torsion ring portion, to allow lodging of the torsion spring on the inside, the inclined state Toshi The receiving portion for holding the state of floating the Nbane from the back to adopt the means for providing the inside of the holding piece and on both sides of the two sides.

According to the present invention, the torsion spring with the locking leg protruding on the back surface, and the holding piece inside the holding structure can be laid down with the torsion ring part hidden inside, thereby projecting the thickness close to the thickness of the decorative panel. A small packaging form having a plane close to a flat area can be obtained, and since screw parts are not used, assembly can be automated and manufacturing costs can be reduced. Further, when the torsion spring is raised, it is easy to operate because the locking leg is lifted from the back.

  The decorative panel for air supply / exhaust of the present invention is made of resin and is suspended and supported on the main body of the ventilation fan by a torsion spring. Torsion springs having locking legs extending in an open leg shape from both ends of the torsion ring portion are provided at two opposing positions on the back of the decorative panel. The torsion spring locking leg is elastically suspended and supported by the main body of the ventilation fan. The torsion ring part of the torsion spring is held by a holding structure including two inner and outer holding pieces that are held between both sides in the axial direction. The holding structure is integrally formed on the back surface of the decorative panel. A resin-made support shaft that is horizontally inserted between the holding pieces inside and outside of the holding structure is inserted into the torsion ring portion, and the torsion spring is held by the holding structure in a state where the locking leg protrudes to the back side. . The inside of the two holding pieces is configured to have a size through which the torsion ring portion passes, and the torsion spring can fall down on the inside.

  The decorative panel is packaged in a state in which the torsion spring is laid inward with the torsion ring portion hidden from the holding piece inside the holding structure. This packaging form is a small one having a thickness close to the thickness of the decorative panel and a plane close to the projected plane area, and is packaged with the main body of the ventilation fan. After unpacking, attaching the main body of the ventilation fan to the ceiling, raising the torsion spring of the decorative panel and supporting it on the outer holding piece, the locking leg protrudes to the back. In this state, it can be attached by inserting and pushing into the long hole of the locking portion of the main body of the ventilation fan.

Embodiment 1 FIG.
1 is an exploded perspective view of the ventilation fan of the present embodiment, FIGS. 2 and 4 are enlarged rear views of the decorative panel, FIGS. 3 and 5 are enlarged side views of the decorative panel, and FIGS. FIG. 8 is a perspective view showing a support shaft. This ventilation fan is attached to the ceiling structure of the building so that most of the main body 1 faces the ceiling space, and exhausts the inhaled room air to the outside through a duct. The indoor side along the ceiling structure of the building is A box-shaped main body 1 that is opened as a suction port 2, a decorative panel 3 that is mounted on the suction port 2 side of the main body 1 along the ceiling surface, and a duct connection that is detachably mounted on one side of the main body 1 Frame 4. A blower 5 that forms an exhaust flow from the suction port 2 toward the duct connection frame 4 is incorporated in the main body 1, and a mounting flange that projects outward is formed at the mouth edge of the suction port 2. On one side of the main body 1, a connecting portion 6 having an air outlet is configured, and the duct connecting frame 4 can be engaged and disengaged by an operation in the vertical direction.

  The decorative panel 3 is made of resin as shown in FIG. 2 and FIG. 4, is composed of a grill of a crossed lattice 7 except for the periphery, and is attached to the main body 1 of the ventilation fan by two torsion springs 8 provided at opposite positions on the back surface. Suspended and supported. The torsion spring 8 has a configuration in which two locking legs 10 extend from both ends of the torsion ring portion 9 in an open leg shape. The decorative panel 3 is elastically suspended and supported by a locking portion 11 provided on the main body 1 of the ventilation fan by the two locking legs 10 of the torsion spring 8. The torsion spring 8 is attached by a support pin 13 to a rectangular cylindrical holding structure 12 integrally formed on the lattice 7 on the back surface of the decorative panel 3. The holding structure 12 includes two long sides on the inside and outside and two short sides 14 on both sides, and one long side protrudes to the back of the decorative panel 3 as a holding piece 15 for holding the torsion spring 8 in an upright state. It is formed higher than the rising edge 16 (see FIG. 2). The inner side protrudes in a convex shape at the center, and a holding piece 17 having a width and a height through which the torsion ring portion 9 of the torsion spring 8 passes is formed. The shoulder 18 of the holding piece 17 and the two sides 14 on both sides are formed so as to have a low standing and higher than the lattice 7 and to support and support the locking leg 10.

  A semicircular insertion hole 19 through which the support pin 13 passes is provided at a position higher than the rising 16 of the inner and outer holding pieces 17, 15. And the rib 20 which supports the torsion ring part 9 in the position corresponding to the insertion hole 19 is formed on the grating | lattice 7 between inner and outer sides, as shown in FIG. The torsion ring portion 9 of the torsion spring 8 is held by two holding pieces 15 and 17 so as to be sandwiched from both sides in the axial direction. Then, the resin support pin 13 is inserted from the insertion hole 19 of the outer holding piece 15 and is inserted into the insertion hole of the inner holding piece 17 through the torsion ring portion 9 to assemble the torsion spring 8. . As shown in FIG. 8, the support pin 13 is provided with a retaining structure 21 that can be attached to and removed from the inner holding piece 17 at the shaft end. The torsion spring 8 assembled in this way can be laid down on the inner back surface of the decorative panel 3 as shown in FIG. 6 by inserting the torsion ring portion 9 through the inner holding piece 17. The two locking legs 10 of the torsion spring 8 in the lying state are supported by the shoulders 18 and are lifted from the lattice 7.

  The decorative panel 3 is packaged in a state in which the torsion spring 8 is folded inward from the holding piece 17 inside the holding structure 12 while the torsion ring portion 9 is hidden. This packaging form is a small one having a thickness close to the thickness of the decorative panel 3 and a plane close to the projected plane area, and is packaged in the main body 1 of the ventilation fan. After unpacking, attaching the ventilation fan main body 1 to the ceiling, raising the torsion spring 8 of the decorative panel 3 and supporting it on the outer holding piece 15, the locking leg 10 protrudes to the back (FIG. 7). reference). In this state, it can be attached by inserting and pushing into the long hole of the locking portion 11 of the main body 1 of the ventilation fan. When the torsion spring 8 is erected, the locking leg 10 is lifted from the lattice 7 so that it is easy to operate. In assembly, the torsion ring portion 9 is supported by the rib 20 at a height corresponding to the insertion hole 19, so that the assembly by the support pin 13 is easy, and the insertion operation of the support pin 13 is performed at a position higher than the rising 16. Easy. Since the support pin 13 is made of resin, it is easy to assemble, and a fingertip or the like is not caught during cleaning or the like. Further, since the holding structure 12 and the ribs 20 are formed on the lattice 7, the ventilation performance of the lattice 7 is not hindered, and only the lattice 7 can be seen from the front side, so that the design is improved.

It is a disassembled perspective view of a ventilation fan. (Embodiment 1) It is an enlarged rear view of a decorative panel. (Embodiment 1) It is an enlarged side view of a decorative panel. (Embodiment 1) It is an enlarged rear view of a decorative panel. (Embodiment 1) It is an enlarged side view of a decorative panel. (Embodiment 1) It is a fragmentary perspective view which shows the principal part of a decorative panel. (Embodiment 1) It is a fragmentary perspective view which shows the principal part of a decorative panel. (Embodiment 1) It is a perspective view of a support shaft. (Embodiment 1)

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Main body, 3 Cosmetic panel, 5 Blower, 7 Lattice, 8 Torsion spring, 9 Torsion ring part, 10 Locking leg, 12 Holding structure, 13 Support pin, 15 Holding piece, 16 Rise, 17 Holding piece, 18 Shoulder, 20 Rib, 21 retaining structure.

Claims (6)

There are torsion springs with locking legs extending from both ends of the torsion ring portion at two opposite positions on the back, and a resin supply that is elastically suspended and supported by the locking legs of the torsion springs. A decorative panel for exhaust, which has a rectangular cylindrical holding structure with two inner and outer holding pieces and two sides on both sides for holding the torsion ring portion of the torsion spring so as to be sandwiched from both sides in the axial direction. A support pin that is molded and horizontally inserted between two holding pieces inside and outside the holding structure is inserted into the torsion ring portion, and the torsion spring is held by the holding structure in a state in which the locking leg protrudes to the back side. together with the inner and outer two things inside the holding piece is configured to a size through which the torsion ring portion, to allow lodging of the torsion spring on the inside, a torsion bar of the inclined state The decorative panel for supply and exhaust of the receiving portion for holding the floating state from the rear is provided on the inner side of the holding piece and on both sides of the two sides. A decorative panel for supply and exhaust of claim 1, wherein between the inner and outer two holding pieces, a rib supporting receiving combined torsion ring portion of the torsion spring into the insertion portion of the support pin feed A decorative panel for exhaust. A decorative panel for supply and exhaust of claim 1 or 2, having a rising that projecting on the rear side around, decorative panels for supply and exhaust with interpolation horizontal supporting pin above the rising position. A decorative panel for supply and exhaust according to any one of claims 1 to 3 composed of a grill cross grid except around, cosmetic for supply and exhaust of the formation of the holding structure on the grid of the grill panel. The decorative panel for air supply / exhaust according to any one of claims 1 to 4 , wherein the support pin is made of resin, and the support pin is latched on the inner holding piece and can be inserted and removed. A decorative panel for air supply and exhaust. A ventilation fan comprising the decorative panel for air supply and exhaust according to any one of claims 1 to 5 on the indoor side.

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