JPH07158920A - Ventilating fan for pipe - Google Patents

Abstract

PURPOSE:To permit the attachment and detachment of a louver surely without employing any tool. CONSTITUTION:A tubular part 6, having blades 2 driven by a motor 1 therein and provided with a spring 5 pressed against the inner surface of a pipe 4 provided in a room wall 3 or a ceiling, and a flange unit 7, provided at the outer periphery of end of the side of the blades 2 of the tubular unit 6, are formed. A flange wall 8, formed by recessing a part of the outer peripheral side of the flange unit 7, is provided while a louver retaining spring 10, provided on a round louver 13 covering the indoor side 12 opening of the tubular unit 6, is hooked to a louver fixing and engaging unit 9, provided so as to be higher than a position whereat the outer periphery of the recessed flange unit 7 is recessed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan for a pipe mounted on a ventilation pipe embedded in a room wall or a ceiling.

[0002]

2. Description of the Related Art In recent years, pipe ventilation fans that are used by being attached to ventilation pipes have been used in bathrooms, because of the increasing need for ventilation.
With the increasing degree of installation in bathrooms, toilets, living rooms, and other places, there is a demand for ventilation fans that allow easy attachment and detachment of louvers.

A conventional ventilation fan of this type has a structure as disclosed in, for example, Japanese Utility Model Publication No. 5-14103.

Hereinafter, the conventional example will be described with reference to FIGS. 13 and 14.
Will be described with reference to. As shown in the figure, a blade 10 driven by an electric motor 102 is provided inside a cylindrical main body 101.
3, the end of the main body 101 on the indoor 104 side is extended outward to form a flange portion 105, and the outer peripheral portion of the flange portion 105 is protruded toward the indoor side to form a peripheral wall 106. The outer wall 10 of the flange portion 105 is attached to the peripheral wall 106.
A nut mounting groove 109 for accommodating the nut 108 is formed by opening the bottom portion on the 7 side, and the outer peripheral portion of the peripheral wall 106 is communicated with the nut mounting groove 109 to open the end portion on the side of the room 104 and the outer peripheral side. The groove 110 is formed, and the peripheral wall 1 is formed.
06 has an intake port 111a at the center on the outer periphery of the U
A louver 111 having an orifice formed with a notch 112 at a position corresponding to the groove 110 is fitted, and the notch 112 of the louver 111 and the U-shaped groove 110 of the peripheral wall 106 of the main body 101 are penetrated. Mounting screw 113
The louver 111 is detachably fixed to the main body 101 by screwing into the nut 108.

[0005]

However, in the structure of such a conventional ventilation fan for pipes, a tool is required to attach the louver 111, and therefore there is a problem that the louver 111 cannot be easily removed for cleaning.

In addition, at the installation site of the ventilation fan main body 101, tools cannot be used due to the positional relationship between the building structure and the ventilation fan, and since the louver 111 was installed without being fastened to the main body 101, there is a risk that the louver 111 will fall. It was

In some cases, cleaning cannot be performed because the tool cannot be removed unless it is used.

Further, since the ventilating fan main body 101 is mounted at a high place, the screw 113 can be seen from below, which causes a problem that the aesthetic appearance of the ventilating fan main body 101 is impaired.

The present invention solves the above problems, and a first object of the present invention is to provide a ventilating fan capable of attaching and detaching a louver without using a tool.

A second object is to improve the cleaning property by allowing the louver to be easily attached and detached.

A third object is to securely fix the louver and prevent the risk of the louver falling.

A fourth object is to improve the interior of the ventilation fan body from below.

[0013]

The first means for achieving the above first to fourth objects of the ventilation fan for pipes according to the present invention is to have blades driven by an electric motor inside and to the outer periphery. A tubular portion provided with a spring that is crimped to the inner surface of a pipe provided on a chamber wall or a ceiling, a flange portion provided on the outer periphery of the blade-side end portion of the tubular portion, and an outer peripheral side of the flange portion. A wall portion or a flange wall that is recessed on the ceiling side, a louver fixing engagement portion that is provided higher than a position where the outer periphery of the recessed flange portion is recessed, and the louver fixing engagement portion. And a louver provided on a side wall of the ceiling, the fixed wall fixing the louver stop spring to cover the inside opening of the cylindrical portion.

The second means has a structure in which a long hole for attaching the pipe ventilation fan main body is provided in the flange wall of the first means.

In the third means, the width of the fixed wall for fixing the louver retaining spring of the first means is made slightly smaller than the width of the flange wall.

The fourth means is provided with a rattling prevention dowel on the louver surface (indoor) side of the flange portion which is arranged at an arbitrary angle with the flange wall of the first means. .

In a fifth means, the flange portion of the first means is formed in a round shape, and a round louver having a round shape attached to the flange portion, and a diameter dimension of the round louver having the round shape. A flange wall is provided at the contact point of a square louver having a square shape having the same width as the above.

In the sixth means, the louver fixing engaging portion of the first means has a shape in which an inclined portion is provided on the indoor side and toward the center of the pipe.

The seventh means has a vane which is driven by an electric motor inside, and a cylindrical portion which is provided on the outer periphery with a spring which is crimped to the inner surface of a pipe provided on a chamber wall or a ceiling. , A flange portion provided on the outer periphery of the blade-side end portion of the tubular portion, a part of the outer peripheral side of the flange portion is a chamber wall, or a flange wall recessed on the ceiling side, and the flange portion of the recessed A louver fixed engaging rib provided with a louver fixed engaging portion raised from a position where the outer periphery is recessed, and a rising outer peripheral side of the louver fixed engaging rib are formed thin.
A louver that covers the opening of the tubular portion on the indoor side, and an opening portion into which the louver fixing engagement portion fits is provided on the outer peripheral side surface of the louver.

The eighth means has a vane which is internally driven by an electric motor, and a cylindrical portion which is provided at the outer periphery with a spring which is crimped to the inner surface of a pipe provided on a chamber wall or a ceiling. , A flange portion provided on the outer periphery of the blade-side end portion of the tubular portion, and a part of the outer peripheral side of the flange portion on the chamber wall,
Or, an indoor side opening of the tubular portion provided with a flange wall concavely provided on the ceiling side and a louver fixing engagement rib that spreads and rises outward from a position where the outer periphery of the concavely formed flange portion is concavely provided. A louver for covering the louver, and an opening for fitting with the louver fixing engaging portion is provided on the outer peripheral side surface of the louver.

[0021]

The present invention has the structure of the above-mentioned first means.
Since the louver is attached by applying an elastic force to the louver stop spring from the outside and pushing the louver to release the elastic force at an arbitrary position, a screw is not required for fixing the louver and the louver can be easily attached.

Further, according to the structure of the second means, since the mounting hole for the ventilation fan main body is provided using the flange wall having the recessed flange portion, this hole is used for mounting on the room wall or the ceiling. It can be attached.

Further, according to the structure of the third means, the fixing wall for fixing the louver fixing spring abuts the flange wall, so that the movement of the louver in the circumferential direction is restricted.

Further, according to the structure of the fourth means, rattling of the louver in the vertical direction is prevented by the rattling prevention dowel provided on the flange portion.

Further, according to the structure of the fifth means, since the flange wall is provided at the common contact point of the round louver and the square louver, both the round louver and the square louver can be attached to the round flange.

Further, according to the structure of the sixth means, when the louver is attached, the louver stop spring moves downward while contacting the inclined portion provided in the louver fixing engagement portion, so that the louver can be simply pushed. It can be done by operation.

Further, according to the structure of the seventh means, when mounting the louver, the flange engaging rib is deformed inward and fitted into the opening of the louver, so that the louver and the main body are fixed without using a separate component. it can.

Further, according to the structure of the eighth means, when the louver is mounted, the louver is pushed into the main body to come into contact with the flange engaging rib to be deformed and fitted into the louver opening, so that a separate part is required. The louver and body can be fixed without using.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, the blade 2 driven by the electric motor 1 is provided inside, and the outer periphery is crimped to the inner wall of the chamber wall 3 or the pipe 4 provided on the ceiling (not shown) or the like. A tubular portion 6 provided with a spring 5 and a flange portion 7 provided on the outer circumference of the blade 2 side end portion of the tubular portion 6 are formed, and a part of the outer circumferential side of the flange portion 7 is formed on the chamber wall 3 or the ceiling. A flange wall 8 is provided on the (not shown) side, and a louver fixing engagement portion 9 is provided higher than the position where the outer circumference of the concave flange portion 7 is provided. The louver stopper spring 10 hooked on the portion 9 and the fixed wall 11 for fixing the louver stopper spring 10 are provided on the chamber wall 3 or on the side surface of the ceiling (not shown). It is configured by a round louver 13 that covers the.

A long hole 15 for attaching the main body 14 is provided in the flange wall 8 in which a part of the outer peripheral side of the flange portion 7 is recessed toward the chamber wall 3 or the ceiling (not shown) side.

Further, the width dimension 11a of the fixed wall 11 for fixing the louver stopper spring 10 is such that a part of the outer peripheral side of the flange portion 7 is recessed in the chamber wall 3 or the ceiling (not shown) side. Is slightly smaller than the width dimension 8a.

Further, a rattling prevention dowel 16 is provided on the louver A13 surface (inside the room) side of the flange portion 7, which is arranged to have an arbitrary angle 16a with the flange wall 8.

Further, the flange portion 7 is formed in a round shape,
A round louver 13 having a round shape attached to the flange portion 7, and a contact portion 18 of a square louver 17 having a square shape having a width equal to the diameter dimension of the round louver 13.
In addition, the flange wall 8 is provided.

In order to fix the round louver 13 of the ventilation fan for a pipe in the above structure to the main body 14, the position of the louver stop spring 10 attached to the round louver 13 is set to the position of the flange wall 8 while supporting the round louver 13 with both hands. Then, the pushing protrusion 19 of the louver stop spring 10 is pushed by both fingers 20b of both hands 20a to push the louver stop spring 10 into the flange portion 7 while generating elastic force in the A direction. When the pushing force of both fingers 20b is released at a position away from the lower end of the portion 9, the elastic force is released and spreads in the direction B, so that the louver fixing engagement portion 9 is hooked and completed. Since the width dimension 11a of the fixed wall 11 for fixing the spring 10 is slightly smaller than the width dimension 8a of the flange wall 8, rattling in the circumferential direction is prevented.

If the finish of the chamber wall 3 is not flat but is recessed toward the outside 21, the louver stop spring 1
Although the round louver 13 tends to rattle in the vertical direction with 0 as a fulcrum, the rattling prevention dowel 16 of the flange portion 7 prevents rattling.

The main body 14 can be easily attached to the chamber wall 3 by the spring 5, but when it is attached to the ceiling (not shown) surface or the like, it is attached using the long hole 15 provided in the flange wall 8. .

When the flange portion 7 has a round shape,
Since the flange wall 8 is provided by utilizing two of the four contact points of the round louver 13 and the square louver 17, both the round louver 13 and the square louver 17 having the same width dimension can be mounted. .

When removing the round louver 13,
By pressing the pushing protrusion 19 of the louver stop spring 10 with both fingers 20b of both hands 20a, elastic force is generated in the louver stop spring 10 in the A direction, and the round louver 13 is moved to the room 1
It can be easily removed by pulling it up in two directions.

The second embodiment of the present invention will be described below with reference to FIGS. 7 and 8. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the louver fixing engagement portion 9 is provided with an inclined portion 22 toward the room 12 side and toward the center of the pipe 4.

In order to fix the round louver 13 of the ventilation fan for pipes to the main body 14 in the above structure, the round louver 13
While holding the louver stopper spring 10 attached to the round louver 13 while pushing the louver stopper spring 10 with both hands 20a, the lower end of the louver stopper spring 10 is inclined toward the louver fixing engagement portion 9. The louver fixing engaging portion 9 abuts on the portion 22, moves downward while generating an elastic force in the C direction, and is released from the elastic force and spreads in the D direction when the louver fixing engaging portion 9 deviates from the lower end position. It is completed with one touch.

When removing the round louver 13,
This is the same as in the first embodiment. The third embodiment of the present invention will be described below with reference to FIGS. 9 and 10.

The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the drawing, a part of the outer peripheral side of the flange portion 7 is recessed toward the chamber wall 3 or the ceiling (not shown) side, and from the position where the outer periphery of the recessed flange portion 7 is recessed. Launched louver fixed engagement rib A
23, and the outer peripheral side of the rising of the louver fixed engagement rib A23 is formed thin, and the chamber 12 of the tubular portion 6 is formed.
A round louver 13 covering the side opening and a louver opening 24 into which the louver fixing engaging rib A23 is fitted are provided on the outer peripheral side surface of the round louver 13.

In order to fix the round louver 13 of the ventilation fan for pipes to the main body 14 in the above structure, the round louver 13
While supporting the hand with both hands 20a, the opening 2 of the round louver 13
By pushing the position of 4 to the louver fixing engagement rib A23 and pushing it in, the lower end of the round louver 13 comes into contact with the inclined portion 25 and moves downward while deforming the louver fixing engagement rib A23 in the E direction, When the louver opening 24 reaches the position of the claw portion 26, the louver fixing engagement rib A23.
Is lost and spreads in the F direction, so that the claw portion 26 is fitted with one touch and completed.

When removing the round louver 13,
The circular louver 13 can be easily removed by pulling up the round louver 13 toward the room 12 while pressing the claw portion 26 with both fingers 20b of both hands 20a and deforming the louver fixing engagement rib A23 in the E direction.

A fourth embodiment of the present invention will be described below with reference to FIG.
The description will be made with reference to FIG.

The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in the drawing, a flange wall 8 is provided in which a part of the outer peripheral side of the flange portion 7 is recessed toward the chamber wall 3 or the ceiling (not shown), and the outer periphery of the recessed flange portion 7 is recessed. A louver fixing engagement rib B27 that spreads outward from the position where the louver is fixed is provided, and a round louver 13 that covers the opening of the tubular portion 6 on the chamber 12 side, and the louver fixing engagement rib on the outer peripheral side surface of the round louver 13. B
A louver opening 24 for hanging 27 is provided.

In order to fix the round louver 13 of the ventilation fan for pipes to the main body 14 in the above structure, the round louver 13
While supporting the hand with both hands 20a, the opening 2 of the round louver 13
By pushing the position of 5 into the louver fixing engaging rib B27 and pushing it in, the lower end of the round louver 13 abuts on the tip inclined portion 28 of the louver fixing engaging rib B27, and the louver fixing engaging rib B27 is moved in the G direction. When the louver opening 24 reaches the position of the claw inclined portion 29, the louver fixing engagement rib B27 loses its deformation and moves in the H direction. The louver fixing engaging rib B27 is fitted to the claw inclined portion 29 with one touch to complete.

When removing the round louver 13,
Attach the protrusion 30 of the louver fixing engagement rib B27 to both hands 20a.
While pressing with both fingers 20b, the louver fixing engagement rib B2
While deforming 7 in the G direction, install the circular louver 13 in the room 1
It can be easily removed by pulling it up in two directions.

In the embodiment, a round flange is used,
Although a round louver is used as an example, there is no difference in the function and effect even if the louver has a rectangular shape.

[0052]

As is clear from the above embodiments, according to the present invention, the louver fixing spring provided on the louver is hooked on the louver fixing engaging portion provided at the position where the outer periphery of the flange portion is recessed. Because the louver screw is not required depending on the structure to be attached, it can be easily installed without using a tool, so you will never forget to tighten the screw, and it can be installed in a place where it is difficult to construct, and for pipes with improved maintainability. A ventilation fan can be provided.

Further, since the main body mounting hole is provided by utilizing the flange wall in which the flange portion is recessed, it is not necessary to separately provide a space for fixing the main body, so that the storage space of the flange portion can be expanded and the flange portion can be expanded. Since the shape of can be simplified, a ventilation fan for pipes that can reduce the cost of the mold can be provided.

Further, since the width of the flange wall is slightly smaller than the width of the fixed wall for fixing the louver stopper spring, it is easy to install the louver even if the position is slightly displaced. Since it abuts, it is possible to provide a ventilation fan for pipes capable of eliminating rattling in the circumferential direction.

Further, even if the louver is tilted by the recess of the chamber wall, the rattling prevention dowel provided on the flange portion restricts the vertical direction by the rattling prevention dowel, so that the vertical rattling is eliminated. It is possible to provide a pipe ventilation fan.

By providing the flange wall at the common contact point between the round louver and the square louver, both the round louver and the square louver can be attached with one round flange, so that the square flange can be manufactured. Since the number of types of products can be increased, an inexpensive fan for pipes can be provided.

When mounting the louver, since the louver stop spring comes into contact with the inclined portion provided on the louver fixing engagement portion and moves downward, the louver can be operated by an extremely easy operation. Of course, it is possible to provide a ventilation fan for pipes that enables the labor saving of user's louver installation.

Further, when mounting the louver, the louver engaging rib is deformed to fit the louver, so that a separate part is not required for fixing the louver, and an inexpensive ventilation fan for pipes can be provided.

When mounting the louver, since the louver is fitted into the louver opening while abutting the louver engaging rib that has been deformed in advance, no separate component is required for fixing the louver, and an inexpensive ventilation fan for pipes. Can be provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an installed state of a pipe ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a plan view of the ventilation fan for pipes according to the first embodiment with a louver removed.

FIG. 3 is an enlarged perspective view of a louver fixing portion of the pipe ventilation fan of the first embodiment.

FIG. 4 is a front view of the pipe ventilation fan of the first embodiment.

FIG. 5 is a cross-sectional view showing a state before the louver of the pipe ventilation fan of the first embodiment is inserted.

FIG. 6 is a sectional view of the pipe ventilation fan of the first embodiment in a state in which a louver is inserted.

FIG. 7 is a cross-sectional view showing a state before insertion of a louver of the pipe ventilation fan of the second embodiment.

FIG. 8 is a sectional view of the ventilation fan for pipes according to the second embodiment in a louver insertion state.

FIG. 9 is a cross-sectional view showing a state before insertion of a louver of the pipe ventilation fan of the third embodiment.

FIG. 10 is a sectional view of the ventilation fan for pipes of the third embodiment in a state in which a louver is inserted.

FIG. 11 is a cross-sectional view showing a state before insertion of a louver of the pipe ventilation fan of the fourth embodiment.

FIG. 12 is a sectional view of the ventilation fan for pipes according to the fourth embodiment in a louver insertion state.

FIG. 13 is a cross-sectional view of a conventional pipe ventilation fan.

FIG. 14 is an enlarged perspective view of a louver mounting portion of the ventilation fan for pipes.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motor 2 Blade 3 Chamber wall 4 Pipe 5 Spring 6 Cylindrical part 7 Flange part 8 Flange wall 9 Louver fixed engagement part 10 Louver stop spring 11 Fixed wall 13 Round louver 14 Body 15 Long hole 16 Rattling prevention dowel 17 Square louver 18 Contact Point 19 Pushing Protrusion 22 Slope 23 Louver Fixing Engaging Rib A 24 Louver Opening 25 Slope 26 Claw 27 Louver Fixing Engaging B B 28 Tip Slope 29 Claw Slanting 30 Protrusion

Claims (8)

[Claims] 1. A tubular portion having a blade which is driven by an electric motor inside and a spring which is crimped to an inner surface of a pipe provided on a chamber wall or a ceiling, and a blade of the tubular portion. A flange portion provided on the outer circumference of the side end portion, a flange wall in which a part of the outer circumference side of the flange portion is recessed in the chamber wall or the ceiling side, and the outer circumference of the recessed flange portion is recessed. A louver fixing engagement portion provided higher than the position, and a louver stop spring hooked on the louver fixing engagement portion, and a fixing wall for fixing the louver stop spring is provided on a chamber wall or a ceiling side surface. A ventilation fan for pipes that is composed of a louver that covers the inside opening of the cylinder. 2. The ventilating fan for pipes according to claim 1, wherein the flange wall is provided with an elongated hole for mounting the main body of the ventilating fan for pipes. 3. The ventilation fan for pipes according to claim 1, wherein the width of the fixed wall for fixing the louver stop spring is slightly smaller than the width of the flange wall. 4. The pipe ventilation fan according to claim 1, further comprising a rattling prevention dowel provided on the louver surface (indoor) side of the flange portion, which is arranged at an arbitrary angle with respect to the flange wall. 5. A flange formed in a round shape, a round louver attached to the flange, and a square shape having a width equal to the diameter dimension of the round louver. The ventilation fan for pipes according to claim 1, wherein a flange wall is provided at a contact point of the louver. 6. The shape of the louver fixing engagement portion on the indoor side,
The ventilating fan for pipes according to claim 1, further comprising an inclined portion toward the center of the pipe. 7. A tubular portion having a blade driven by an electric motor inside, and a spring provided on the outer periphery with a spring crimped to the inner surface of a pipe provided on a chamber wall or a ceiling, and the blade of this tubular portion. A flange portion provided on the outer circumference of the side end portion, a flange wall in which a part of the outer circumference side of the flange portion is recessed in the chamber wall or the ceiling side, and the outer circumference of the recessed flange portion is recessed. A louver fixing engaging rib provided with a louver fixing engaging portion raised from a position; and a louver having an outer peripheral side of rising of the louver fixing engaging rib formed thin to cover the inside opening of the cylindrical portion. A ventilation fan for pipes, wherein an opening to which the louver fixing engaging portion is fitted is provided on an outer peripheral side surface of the louver. 8. A tubular portion having a blade driven by an electric motor inside, and a spring provided on the outer periphery with a spring crimped to the inner surface of a pipe provided on a chamber wall or a ceiling, and the blade of this tubular portion. A flange portion provided on the outer circumference of the side end portion, a flange wall in which a part of the outer circumference side of the flange portion is recessed in the chamber wall or the ceiling side, and the outer circumference of the recessed flange portion is recessed. The louver is provided with a louver fixing engagement rib that extends outward from the position and covers the indoor side opening of the tubular portion, and an opening for fitting the louver fixing engagement portion is provided on the outer peripheral side surface of the louver. Ventilation fan for pipes.