JP2011144987A - Ventilation fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a ventilation fan enhancing a rate of ventilation performed through a filter and preventing decline in dust removing efficiency in a filter part. <P>SOLUTION: The ventilation fan includes: protruded parts 7a, 7b formed in a plurality of portions of a flange part 5e of a filter frame 5b and having predetermined width in the lateral direction; hook-shaped hooking parts 6a, 6b which are provided in a plurality of portions of a face plate and having predetermined width in the lateral direction and with which the protruded parts 7a, 7b slid on the face plate from the lateral direction are engaged; a stopper 12 provided on the face plate and made to abut on the filter 5 to stop sliding of the filter 5 when sliding to a normal position where the protruded parts 7a, 7b are engaged with the hooking parts 6a, 6b is performed; engagement projections 10 formed in the flange part 5e of the filter frame 5b; and engagement holes provided on the face plate and engaged with the engagement projections 10 to lock the sliding of the filter 5 when the filter frame 5b is slid to the normal position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ventilation fan provided with a filter at a ventilation opening.

  As a conventional ventilation device that is attached to ventilation pipes embedded in the ventilation openings of walls and ceilings and ventilates indoor air, it has a fan motor part and a frame shape around it, and at the center of this frame There is a bell mouth corresponding to a suction port of a fan provided, a cover attached to a frame, and a filter part provided on a front surface part of the cover, and an attachment member that can be attached to and detached from the cover is formed on the filter part ( Patent Document 1).

JP 2004-116896 A

  However, according to the above conventional technique, the filter part is attached to the front surface of the cover that covers the main body, so that wind leaks from the gap between the cover and the main body, and ventilation through the filter is difficult, and the dust removal efficiency of the filter part is high. There was a problem of getting worse.

  This invention is made in view of the above, Comprising: It aims at obtaining the ventilation fan which raised the ratio of the ventilation performed through a filter and prevented the fall of the dust removal efficiency in a filter part.

  In order to solve the above-described problems and achieve the object, the present invention includes a main body frame that has a face plate on which an exhaust suction port is formed and that holds a fan motor disposed behind the exhaust suction port, and a filter frame. A ventilating fan comprising a filter having a held filter net and mounted on a front surface of a face plate and provided at an exhaust suction port, and a grill attached to an outer peripheral portion of the face plate so as to cover the filter and the face plate. A laterally extending portion formed at a plurality of locations on the face plate, and a laterally extending flange portion provided at a plurality of locations on the face plate that slides and engages on the face plate from the lateral direction. The hook is formed on the flange, the stopper that stops the filter by abutting against the filter when it slides to the normal position where the overhang is provided on the face plate and engages the hook. Engaging portions provided on the faceplate, the filter frame, characterized in that it comprises, and the engaged portion for locking the sliding of the filter engages the engaging portion when the slide to the proper position.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that the ratio of the ventilation performed through a filter is made so that a clearance gap does not leave between a cover and a main body, and the fall of the dust removal efficiency in a filter part can be prevented.

FIG. 1 is an exploded perspective view showing an embodiment of a ventilation fan according to the present invention. FIG. 2 is a perspective view showing a state before the filter frame is attached to the ventilation fan. FIG. 3 is a rear view of the filter frame. FIG. 4 is a perspective view of the ventilation fan with the grill removed. FIG. 5 is a perspective view showing an engaged state between the overhang portion and the hook portion. FIG. 6 is an enlarged perspective view of the knob. FIG. 7 is a cross-sectional view of a ventilation fan to which a filter frame is attached. FIG. 8 is a cross-sectional view showing an engagement state between the engagement convex portion and the engagement hole. FIG. 9 is a side view of the hook portion of the shape portion. FIG. 10 is a side view of the lower hooking portion. FIG. 11 is a side view of the convex portion at the lower part of the filter frame.

  Hereinafter, embodiments of a ventilation fan according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment FIG. 1 is an exploded perspective view showing an embodiment of a ventilation fan according to the present invention, FIG. 2 is a perspective view showing a state before a filter frame is attached to the ventilation fan, and FIG. 3 is a filter frame. 4 is a perspective view of the ventilation fan with the grill removed, FIG. 5 is a perspective view showing an engaged state between the overhanging portion and the hooking portion, and FIG. 6 is an enlarged view of the knob. FIG. 7 is a cross-sectional view of a ventilation fan with a filter frame attached, FIG. 8 is a cross-sectional view showing an engagement state between an engagement convex portion and an engagement hole, and FIG. FIG. 10 is a side view of the lower hooking portion.

  As shown in FIG. 1, the ventilation fan 100 includes a resin-made main body frame 2 formed in a substantially rectangular shape, a fan motor 1 disposed at the rear of the main body frame 2 and held by the main body frame 2, and driven by the fan motor 1. Fan 1a, a filter 5 mounted on the front surface of the face plate 3 of the main body frame 2 and provided at the ventilation opening, and covers the face plate 3 and the filter 5 of the main body frame 2 and is attached to the outer peripheral portion of the face plate 3 for indoor ventilation suction. A resin grill 8 serving as a mouth is provided.

  As shown in FIGS. 1, 2, and 7, the main body frame 2 includes a substantially rectangular face plate 3 in which a circular exhaust suction port 4 is formed in a substantially central portion, and a frame portion formed on an outer peripheral portion of the face plate 3. 2 a and an exhaust cylinder 2 b connected to the exhaust suction port 4 and extending rearward of the face plate 3 to hold the fan motor 1 and fitted to the ventilation pipe.

  The filter 5 includes a filter frame 5b formed in a substantially rectangular frame shape with resin, and a filter net 5a formed on the filter frame 5b by welding or integral molding.

  The grill 8 is formed in a box shape having a plurality of longitudinal slit-shaped ventilation openings 8a formed on a rectangular front surface and a frame portion 8b serving as a grill side surface on the outer peripheral portion of the front surface.

  The filter frame 5b protrudes from the filter surface as shown in FIG. 11 as a flange portion 5e that contacts the front surface of the face plate 3 of the main body frame 2, a rising portion 5d that rises forward from the inner peripheral portion of the flange portion 5e, and drops. And a convex portion 5f that holds the dust.

  As shown in FIG. 2, overhangs 7a and 7a for locking and attaching the filter frame 5b to the front surface of the face plate 3 of the main body frame 2 are provided in the upper part of the flange portion 5e of the filter frame 5b. It has a trapezoidal shape with a predetermined width (about 2 to 3 cm) and is formed at two locations with a gap in the horizontal direction. Further, a protruding portion 7b is formed at one position with a width from the right end to the central portion at the lower portion of the flange portion 5e. Further, a knob portion 9 as an interference portion that bends forward in a bowl shape is formed on the right side portion of the flange portion 5e.

  As shown in FIGS. 2, 9, and 10, hooks 6 a, 6 a that engage the overhangs 7 a, 7 a have a predetermined width (2 in the lateral direction) on the upper part of the front surface of the face plate 3 of the main body frame 2. ˜about 3 cm), and is arranged at two locations corresponding to the projecting portions 7a, 7a with a gap in the lateral direction. Further, on the lower part of the front surface of the face plate 3, a hooking portion 6b for engaging the overhanging portion 7b is disposed at one place with a predetermined width (about 2 to 3 cm) in the lateral direction. The width in the horizontal direction (left-right direction) of the upper hooking portion 6a and the lower hooking portion 6b is substantially the same as the width of the upper overhanging portion 7a.

  The two hook portions 6a and 6a may be formed as one continuous hook portion 6a. However, when the two hook portions 6a and 6a are formed as one continuous hook portion 6a, the amount of sliding when the filter 5 is removed increases. In the present embodiment, the hooking portion 6a is disposed in two places as the hooking portions 6a and 6a having a predetermined width in the lateral direction, and the overhanging portion 7a at the upper part of the filter frame 5b is disposed in the overhanging portion 7a having the predetermined width in the horizontal direction. , 7a is arranged at two locations, so that the amount of slide when removing the filter 5 is reduced to facilitate removal.

  Further, since the filter 5 is held by the filter frame 5b and the projecting portions 7a and 7b of the filter frame 5b are securely engaged with the hooking portions 6a and 6b, there is no displacement of the filter 5, and A filter surface does not incline back and forth, can maintain adhesiveness with the main body surface, and can suppress the amount of air leakage. In addition, there is an effect that dust held on the filter net 5a is not easily dropped.

  When the filter 5 is attached to the main body frame 2, as shown in FIG. 2, the filter 5 is moved in the left direction (lateral direction) with the left side of the flange portion 5e of the filter frame 5b being in contact with the right side of the face plate 3 of the main body frame 2. 5), the projecting portions 7a and 7b of the filter 5 are overlapped and engaged with the hooking portions 6a and 6b of the main body frame 2, respectively, as shown in FIG.

  As shown in FIG. 2, at the lower left corner of the face plate 3 of the main body frame 2, the filter 5 slides to the left, and the overhanging portions 7a, 7b and the hooking portions 6a, 6b overlap and engage with each other. Is provided with an L-shaped stopper 12 that comes into contact with the left end of the filter 5 to stop the sliding of the filter 5. At the regular position, the hooking portion 6b is arranged so that the left end of the overhang portion 7b coincides with the left end of the hooking portion 6b.

  As shown in FIGS. 2, 3, and 8, hemispherical engagement convex portions 10 as engagement portions or engagement portions are provided at two positions on the right side of the face plate 3 of the main body frame 2. Engagement holes 11 as engagement portions or engaged portions with which the engagement protrusions 10 are engaged are formed at two locations on the right flange portion 5e of the filter frame 5b, and the filter frame 5b is in the normal position described above. The engagement projection 10 and the engagement hole 11 are engaged with each other when the filter 5 is slid to lock the filter 5 in the left-right direction.

  As shown in FIGS. 2 and 4, when the filter 5 is mounted on the main body frame 2, the right knob portion 9 of the filter 5 is picked with the right hand, and the left side of the flange portion 5 e of the filter 5 is the flange portion 3 of the main body frame 2. The filter 5 is slid to the left, and as shown in FIG. 5, the upper protruding portions 7a and 7a and the lower protruding portion 7b of the filter 5 are respectively hooked on the upper portion of the main body frame 2. The left and right ends of the filter 5 are engaged with the stoppers 12, and the engagement protrusions 10 on the right side of the face plate 3 of the main body frame 2 and the right side of the filter 5 are engaged with the portions 6 a and 6 a and the lower hooking portion 6 b. The engagement hole 11 of the flange part 5e is engaged.

  The filter 5 is vertically and horizontally and front and rear with respect to the main body frame 2 by the face plate 3 of the end frame 2, the upper hooking portions 6a and 6a, the lower hooking portion 6b, the stopper 12 and the engaging convex portion 10. Therefore, the filter frame 5b and the face plate 3 are in close contact with each other, and the amount of air leakage is reduced. Further, it can be easily attached to the main body frame 2 by one-hand operation by picking the knob portion 9 of the shutter 5.

  Further, the upper overhanging portion 7a is formed with a predetermined width in the lateral direction, and the upper and lower hooking portions 6a, 6b are formed with a predetermined width in the horizontal direction. Since the hanging portion 6a overlaps and the left end of the lower overhanging portion 7b coincides with the left end of the hanging portion 6b, if the filter 5 is slid to the right by a predetermined width from the normal position, the overhanging portion The filter 5 can be removed forward by disengaging the engaging portions 7a, 7b and the hooking portions 6a, 6b.

  As shown in FIGS. 4 and 6, if the filter 5 is not slid to the normal position, the knob portion 9 as an interference portion protrudes from the face plate 3 to the right side, and the grill 8 is attached to the main body frame 2. When attaching to the main body frame 2, the side surface (frame part) 8 b of the grille 8 and the knob part 9 interfere with each other so that the grille 8 cannot be attached to the main body frame 2. Thereby, erroneous mounting of the filter 5 can be prevented.

  Note that the two hook portions 6a and 6a may be formed as one continuous hook portion 6a. Further, the rail-shaped upper and lower portions of the flange portion 5e of the filter frame 5b may be directly engaged with the hook portions 6a and 6b without providing the overhang portions 7a and 7b. Further, the overhanging portion 7a and the hooking portion 6a having a predetermined width may be arranged in one place, and the overhanging portion 7b and the hooking portion 6b having a predetermined width may be arranged in two places. Further, the stopper 12 can be installed at an arbitrary position on the face plate 3 even if it is not at the lower left corner of the face plate 3 of the main body frame 2. Further, the interference portion may be provided as a protruding portion of the filter frame 5b separately from the knob portion 9. Moreover, the engagement hole 11 may be provided in the face plate 3, and the engagement convex part 10 may be provided in the filter frame 5b.

  According to the present embodiment, the hooks 6a and 6b having hook-like hooks 6b are provided on the front surface of the face plate 3 of the main body frame 2 to engage the filter frame 5 by sliding on the face plate 3 from the lateral direction. Is less likely to fall downward or forward, the adhesion between the main body frame 2 and the filter 5 is improved, the amount of leakage air ventilated without passing through the filter net 5a is small, and the dust removal efficiency at the filter 5 can be improved. it can. Further, since the filter 5 is slid in the horizontal direction and removed, the dust attached to the filter net 5a is difficult to drop during maintenance.

  As described above, the ventilation fan according to the present invention is attached to a ventilation pipe or the like embedded in a ventilation opening of a wall portion and is useful as a ventilation fan for pipes.

DESCRIPTION OF SYMBOLS 1 Fan motor 1a Fan 2 Main body frame 2a Frame part 3 Face plate 4 Exhaust air inlet 5 Filter 5a Filter network 5b Filter frame 5d Standing part 5e Flange part 5f Convex part 6a, 6b Hook part 7a, 7b Overhang part 8 Grill 8a Vent 9 Knob part 10 Engaging convex part 11 Engaging hole 12 Stopper 100 Ventilation fan

Claims (5)

A main body frame that has a face plate in which an exhaust air inlet is formed and that holds a fan motor disposed behind the exhaust air inlet, and a filter net that is held by a filter frame and that is mounted on the front surface of the face plate A ventilation fan comprising a filter provided at a suction port, and a grill mounted on an outer peripheral portion of the face plate so as to cover the filter and the face plate,
A projecting portion having a predetermined width in the lateral direction formed at a plurality of locations of the flange portion of the filter frame;
A hook-shaped hook portion having a predetermined width in the lateral direction, which is provided at a plurality of locations on the face plate, and the overhanging portion slides and engages on the face plate from the lateral direction;
A stopper that is provided on the face plate and stops the slide of the filter by abutting against the filter when the overhanging portion slides to a normal position where it engages with the hooking portion;
An engagement portion formed on a flange portion of the filter frame;
An engaged portion that is provided on the face plate and engages with the engaging portion to lock the slide of the filter when the filter frame slides to the normal position;
A ventilation fan characterized by comprising.   One of the upper and lower portions of the filter frame is provided with a plurality of drawer portions having a predetermined width in the lateral direction, and the other is provided with one or more drawer portions having a predetermined width in the lateral direction, corresponding to the plurality of drawer portions. The ventilation fan according to claim 1, wherein a plurality of hooks having a predetermined width are arranged on the front surface of the face plate.   An interference portion is provided on the filter frame and has an interference portion that interferes with the grill and interferes with the mounting of the grill on the body frame when the filter frame is in a position other than the normal position. The ventilation fan according to claim 1 or 2.   The ventilation fan according to claim 3, wherein the interference portion is a knob portion that is picked up when the filter frame is attached to the face plate.   The ventilating fan according to any one of claims 1 to 4, further comprising a convex portion protruding forward from a surface of the filter net at a lower portion of the filter frame.

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