JP6893301B2 - Ceiling embedded ventilation fan - Google Patents

Description

The present invention relates to a ceiling-embedded ventilation fan in which a louver is engaged by a spring.

Conventionally, in the ceiling-embedded ventilation fan, the winding portion of the spring is engaged with the hook portion of the louver, and both ends of the spring are engaged with the ceiling-embedded ventilation fan main body. As a result, the spring pulled the louver toward the main body, and the louver was brought into close contact with the ceiling.

Hereinafter, the ceiling-embedded ventilation fan will be described with reference to FIG.

In the conventional ceiling-embedded ventilation fan 101 shown in FIG. 9, both ends of the spring 104 fitted to the hooking portion 103 of the louver 102 are hooked on the engaging portion 105 to pull the louver 102 in the main body direction 106. The louver 102 was brought into close contact with the ceiling 107. Further, ribs 106 for suppressing deformation were provided around the hooking portion 103.

Japanese Unexamined Patent Publication No. 2000-283540

In such a conventional ceiling-embedded ventilation fan 101, in order to make the packing box of the louver 102 as small as possible, it is necessary to prevent the spring 104 from protruding outside the outer shape of the louver 102 at the time of packing. The rib 106 around the hooking portion 103 may be caught, and the spring 104 may protrude outside the outer shape of the louver 102. If it pops out, the spring 104 may be deformed and a problem may occur when the louver 102 is attached to the main body side of the ceiling-embedded ventilation fan 101.

Therefore, the present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a ceiling-embedded ventilation fan 101 capable of preventing the spring 104 from protruding outside the outer shape of the louver 102 at the time of packing. And.

In order to achieve this object, the ceiling-embedded ventilation fan according to the present invention has a spring formed of a wire rod, a louver having a circular winding portion in the center, and legs formed on both sides, and a winding portion. A ceiling-embedded ventilation fan including a louver having a mounting portion that engages with the louver and a ventilation fan body having an engaging portion that engages with the louver by utilizing the opening elastic force of the leg portion. , Two bases protruding from the surface of the louver toward the main body of the ventilation fan, a hook extending from the tip of the base toward the tip of the other base, and a winding part formed by the two hooks. It is provided with a gap for passing through and a rotating space formed by two bases, a hooking portion and the surface of the louver to rotate the winding portion that has passed through the gap, and the base is the surface of the louver. A pedestal is provided to reinforce the protrusion of the base toward the protruding tip direction of the base starting from the starting point, and the first rib is a pedestal that positions the circumferential side surface of the winding portion between the starting point and the protruding tip. It has a department, which achieves its intended purpose.

According to the present invention, it is possible to provide a ceiling-embedded ventilation fan in which a spring does not protrude outside the outer shape of the louver during packaging.

Cross-sectional view of the ceiling-embedded ventilation fan according to the present invention Overall view of the louver Overall view of the spring Enlarged view around the mounting part when the spring is not mounted Enlarged cross-sectional view around the mounting part when the spring is not mounted FIG. 2 is a cross-sectional view showing a part of the BB cross section in FIG. Partial cross-sectional view when the winding part is arranged in the rotating space Partial cross-sectional view when the winding part is arranged on the pedestal part Sectional view of a conventional ventilation fan

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are examples that embody the present invention, and do not limit the technical scope of the present invention.

(Embodiment 1)
As shown in FIG. 1, the ceiling-embedded ventilation fan 1 includes a ventilation fan main body 2 and a louver 3. The louver 3 is in a state where the ceiling 4 is positioned between the louver 3 and the ventilation fan main body 2. It is locked to the ventilation fan main body 2 by a spring 6 described later.

The ventilation fan main body 2 has a hollow box shape and is arranged above the ceiling 4. In the ventilation fan main body 2, for example, the suction port 25 is located on the upper surface of the ceiling 4, and the air outlet 26 is arranged so as to face sideways. The ventilation fan main body 2 is provided with a blower portion including a motor and blades inside, and by rotating the blades, an air flow from the suction port 25 toward the air outlet 26 is generated. The ventilation fan main body 2 includes an engaging portion 5 that projects from the blade side toward the suction port 25.

As shown in FIG. 2, the louver 3 has a rectangular plate shape and has a rectangular opening 27 at the center. The lower surface of the louver 3 is directed toward the indoor space as a decorative panel, and the upper surface is arranged as the back surface facing the ventilation fan main body 2. When the louver 3 is locked to the ventilation fan main body 2, the opening 27 is located so as to face the suction port 25 of the ventilation fan main body 2, so that an air passage from the indoor space to the air outlet 26 is formed.

The louver 3 includes a spring 6 and a mounting portion 7 for mounting the spring 6.

One mounting portion 7 is provided near the center of two opposing sides forming the rectangular opening 27.

As shown in FIG. 3, the spring 6 is formed of a single wire rod. The spring 6 includes a winding portion 8 wound in a circular shape at a substantially central portion, and leg portions 9 on both sides thereof. In the side view shown in FIG. 3, the leg portion 9 is provided so as to extend in the left-right direction from the same point of the winding portion 8, and is provided near the center of each leg portion 9 in the same direction as the winding portion 8. It includes a bulging portion 37 that bulges.

In the spring 6, when no external force is applied, the leg portion 9 and the winding portion 8 are located substantially in a straight line as shown in FIG. The ventilation fan main body 2 includes an engaging portion 5 with the leg portion 9, and the leg portion 9 is brought closer by an external force to pass through the engaging portion 5, and then the external force is released to cause the spring due to the elasticity of the spring 6. 6 is attracted to the ventilation fan main body 2. At this time, since the winding portion 8 of the spring 6 is locked to the mounting portion 7 of the louver 3, the louver 3 and the ventilation fan main body 2 are locked with the ceiling 4 sandwiched by the elastic force of the spring 6. ..

FIG. 5 is a part of the cross-sectional view taken along the line AA in FIG. As shown in FIG. 5, the mounting portion 7 has two bases 10 (base 10L and base 10R) protruding from the front surface 28 (back surface) of the louver 3 toward the ventilation fan main body 2, and the other base 10 from the tip of the base 10. It is provided with a hooking portion 11 (hooking portion 11L and hooking portion 11R) extending toward the tip end. Further, the mounting portion 7 is formed by two hooking portions 11 and is formed by a gap 12 for passing the winding portion 8 and two base portions 10, the hooking portion 11 and the surface of the louver 3, and the gap 12 is formed. It is provided with a rotating space 13 for rotating the winding portion 8 that has passed through.

FIG. 6 is a part of a sectional view taken along line BB in FIG. As shown in FIG. 6, the base portion 10 includes a first rib 14 for reinforcing the protrusion of the base portion 10 from the surface 28 of the louver 3 toward the protruding tip 45 of the base portion 10.

The first rib 14 is provided so as to project from the base 10 in the left-right direction along the surface 28 of the louver 3 parallel to one side of the opening 27. The first rib 14 includes a pedestal portion 15 that positions the side surface of the circumferential portion of the winding portion 8 between the surface 28 of the louver 3 and the protruding tip 40. The circumferential side surface means the top surface or the bottom surface when the winding portion 8 has a hollow cylindrical shape. The height of the pedestal portion 15 from the surface 28 is shown as the height 41 of the pedestal portion.

Since the pedestal portion 15 is provided for each of the first ribs 14, two pedestal portions 15 are provided at positions facing each other with one base portion 10 interposed therebetween. The distance 42 between the base 10 side ends of the two pedestals 15 is shorter than the diameter of the inner circumference of the winding portion 8.
In the above structure, the operation of attaching the spring 6 to the louver 3 and bringing the louver 3 into close contact with the ceiling 4 will be described.

The winding portion 8 of the spring 6 is pushed into the two gaps 12 of the louver 3 one by one, and the winding portion 8 is arranged in the rotating space 13. The gap 12 is gradually widened toward the ventilation fan main body 2 side. Therefore, when the winding portion 8 is started to be pushed in, the width of the gap 12 becomes wide, so that the winding portion 8 can be passed with a smaller force than when the winding portion 8 is not gradually widened. Further, in the gap 12, the width of the surface side end portion of the louver 3 is smaller than the diameter of the wire rod. As a result, even if the spring 6 freely moves in the rotating space 13 after engaging with the rotating space 13, it does not pass through the gap 12, that is, the winding portion 8 can be suppressed from coming off.

FIG. 7 is a partial cross-sectional view when the winding portion 8 is arranged in the rotating space 13. In a state where the leg portion 9 and the engaging portion 5 are not engaged, after the winding portion 8 is arranged in the rotation space 13, the winding portion 8 moves in the moving direction due to the weight of the leg portions 9 on both sides. Rotate to the 20 side. Then, when the spring 6 is tilted toward the louver outer peripheral direction 21 due to this rotational movement, the circumferential side surface of the winding portion 8 is arranged on the pedestal portion 15 with the position of the height 41 of the pedestal portion as the lower end.

FIG. 8 is a partial cross-sectional view when the winding portion 8 is arranged on the pedestal portion 15. As shown in FIG. 8, by arranging the side surface of the circumferential portion on the pedestal portion 15, the leg portion 9 can be accommodated in the outer shape (height) of the louver 3. Therefore, the spring 6 does not get in the way during packing.

Further, since the distance 42 between the base 10 side ends of the two pedestals 15 is shorter than the diameter of the inner circumference of the winding portion 8, the winding portion 8 has the two pedestals 15 inside the winding portion 8. It can be included in the circumference circle. That is, by appropriately setting the height 41 of the pedestal portion 15, when the spring 6 falls in the outer peripheral direction of the louver, it is possible to arbitrarily determine how far the spring 6 falls. Therefore, it is possible to form a rib shape necessary for ensuring the strength while tilting the spring 6 to the extent that it does not get in the way during packing.

Further, as shown in FIGS. 6 to 8, at a position facing the rotation space 13 with the base portion 10 in between, the first portion is inclined in a direction away from the base portion 10 from the protruding tip 45 of the base portion 10 toward the surface 28 of the louver 3. It has 2 ribs 16.

In the second rib 16, the distance 43 from the end of the base 10 on the rotating space 13 side to the end of the second rib 16 on the surface of the louver 3 is longer than the diameter of the winding portion 8.

As a result, when the spring 6 falls in the outer peripheral direction of the louver 21, the portion of the circumferential portion 8 of the winding portion 8 near the outer periphery of the louver rides on the second rib 16. At this time, since the winding portion 8 is affected by the weight of the leg portion 9 and receives a force in the louver outer peripheral direction 21, the spring 6 is displaced in the louver outer peripheral direction 21 as shown in FIG. As a result, the position of the spring 6 at the time of packing is determined, and the spring 6 does not get in the way at the time of packing.

Further, as shown in FIG. 3, the leg portions 9 on both sides intersect with the tangent line 17 provided on the winding portion 8 in a state where the leg portion 9 and the engaging portion 5 are not engaged with each other. You may. As a result, the spring 6 can be accommodated within the outer shape of the louver 3 even when the shape between the leg portion 9 and the winding portion 8 is greatly curved.

(Outline of Embodiment)
The ceiling-embedded ventilation fan according to the present invention has a spring formed of a wire rod and having a circularly wound louver in the center and legs formed on both sides, and a mounting portion that engages with the louver. A ceiling-embedded ventilation fan including a louver having a louver and a ventilation fan main body having an engaging portion that engages with the louver by utilizing the opening elastic force of the leg portion, wherein the mounting portion is of the louver. The winding portion formed by the two bases protruding from the surface toward the main body of the ventilation fan, the hooks extending from the tip of the base to the tips of the other bases, and the two hooks. A gap for passing through the gap and a rotating space for rotating the winding portion formed by the two bases, the hooking portion, and the surface of the louver and passing through the gap. The base includes a first rib for reinforcing the protrusion of the base from the surface of the louver as a starting point toward the protruding tip of the base, and the first rib is between the starting point and the protruding tip. The louver is provided with a pedestal portion for locating the side surface of the circumferential portion of the winding portion.

Further, in the state where the leg portion and the engaging portion are not engaged with each other, the winding portion has the base portion and the winding portion on the inner circumference of the circular shape due to the rotation of the winding portion in the rotating space. It has a configuration in which the side surface of the circumferential portion of the winding portion can be arranged on the pedestal portion by positioning the first rib.

With the above structure, the side surface of the circumferential portion of the winding portion can be arranged on the pedestal portion in a state where the leg portion and the engaging portion are not engaged. As a result, it is possible to prevent the spring from moving freely, so that it does not get in the way when packing the louver.

Further, it is said that two pedestals are provided at positions facing each other across the base, and the distance between the base side ends of the two pedestals is shorter than the diameter of the winding portion. It may be configured.

With the above structure, the winding portion can be installed so as to include the two pedestal portions, so that the spring can be accommodated between the upper tip and the lower tip of the pedestal portion. As a result, the spring does not protrude from the outer shape of the louver, so that the packing box can be made thinner.

Further, a second rib is provided at a position facing the rotating space across the base portion so as to be inclined from the tip end direction of the base portion toward the surface of the louver in a direction away from the base portion, and the second rib is the said. The distance from the end of the base portion on the rotating space side to the end portion of the second rib on the surface of the louver may be longer than the diameter of the winding portion.

According to the above structure, when the winding portion is placed on the second rib, the winding portion moves toward the louver surface along the inclination of the rib due to its own weight. As a result, the spring can be more reliably housed within the outer shape of the louver, which has the effect of making the packaging box thinner.

Further, the legs on both sides may be configured to intersect the tangent line provided on the winding portion in a state where the leg portion and the engaging portion are not engaged.

With the above configuration, it is the legs that form the outer shape of the spring. Therefore, even if the legs are enlarged, the spring can be accommodated in the outer shape of the louver.

Since the content of the present invention can be applied to those fitted with resin parts, it can be applied to all those having a housing made of resin such as an air conditioner and a personal computer.

1,101 Ceiling embedded ventilation fan 2 Ventilation fan body 3,102 Louver 4,107 Ceiling 5,105 Engagement part 6,104 Spring 7 Mounting part 8 Winding part 9 Leg part 10,10L, 10R Base part 11,11L, 11R , 103 Hooking part 12 Gap 13 Rotating space 14 1st rib 15 Pedestal part 16 2nd rib 17 Tangent 20 Moving direction 21 Louver outer peripheral direction 25 Suction port 26 Air outlet 27 Opening 28 Surface 37 Protruding part 40 Projecting tip 41 42,43 Distance 45 Protruding tip

Claims (5)

A spring that is made of wire and has a circular winding part in the center and legs formed on both sides.
A louver having a mounting portion that engages with the winding portion,
A ceiling-embedded ventilation fan including a ventilation fan body having an engaging portion that engages with the louver by utilizing the opening elastic force of the leg portion.
The mounting part is
Two bases protruding from the surface of the louver toward the main body of the ventilation fan,
A hook portion extending from the tip of the base toward the tip of another base, and
A gap formed by the two hooking portions for passing the winding portion, and
It is provided with a rotating space formed by the two bases, the hooking portion, and the surface of the louver and for rotating the winding portion that has passed through the gap.
The base is
A first rib for reinforcing the protrusion of the base portion from the surface of the louver as a starting point toward the protrusion tip direction of the base portion is provided.
The first rib
A ceiling-embedded ventilation fan provided with a pedestal portion that positions the side surface of the circumferential portion of the winding portion between the starting point and the protruding tip. The winding part is
In a state where the leg and the engaging portion are not engaged,
By rotating the winding portion in the rotating space, the base portion and the first rib are positioned on the inner circumference of the circular shape, and the circumferential side surface of the winding portion is arranged on the pedestal portion. The ceiling-embedded ventilation fan according to claim 1. The pedestal portion
Two are provided at opposite positions across the one base.
The distance between the base side ends of the two pedestals is
The ceiling-embedded ventilation fan according to claim 1 or 2, which is shorter than the diameter of the winding portion. A second rib is provided at a position facing the rotating space across the base portion so as to be inclined from the tip end direction of the base portion toward the surface of the louver in a direction away from the base portion.
The second rib
The ceiling embedding according to any one of claims 1 to 3, wherein the distance from the rotation space side end portion of the base portion to the end portion of the second rib on the louver surface is longer than the diameter of the winding portion. Shape ventilation fan. The legs on both sides
The ceiling-embedded ventilation fan according to any one of claims 1 to 4, wherein the leg portion and the engaging portion intersect with a tangent line provided on the winding portion in a state where the engaging portion is not engaged.

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