JP3297582B2 - Duct ventilation fan - Google Patents

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 duct, which is provided on a ceiling of a living room or a bathroom and is connected to a duct communicating with the outside to exchange air in a living room or a bathroom.

[0002]

2. Description of the Related Art An example of a conventional duct ventilation fan will be described with reference to FIG.

[0003] As shown in the figure, a box-shaped main body 102 is provided with an opening 103 on a lower surface thereof, and a blower 104 and an orifice 105 are provided therein. A discharge adapter 107 is provided in the elongated hole 106 having a shape and the outer periphery of the main body 102, is engaged so as to cover the lower surface opening 103 of the main body 102, and is pulled out and pushed into the opposing inner side surface of the main body 102, and its own spring A spring mounting plate 110 provided with a curled spring hook 109 on which a bifurcated spring 108 that can easily enter and move by force is hooked to the decorative grill 111 by spot welding.

In the above configuration, when the blower 104 is operated, dirty air in the room or bathroom is sucked in from the makeup grill 111, passed through the adapter 107 and discharged to the outside 113 through a duct (not shown). On the other hand, the makeup grill 111 is inserted and installed in the elongated hole 106 of the orifice 105 so that it can be easily removed.

[0005]

In such a conventional ventilation fan for a duct, a decorative grill 1 attached to a main body 102 is provided.
Fork 11 is detachable from the main body 102.
08 is a curl-shaped spring hook 109 of the spring mounting plate 110.
The spring mounting plate 110 is attached to the decorative grill 111
However, there is a problem that a dent of the spot welding is left on the surface to impair the aesthetic appearance and that the mounting strength varies.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a duct ventilation fan which can prevent spot welding dents or the like from appearing on the front of a decorative grill and has a small variation in mounting strength of the decorative grill. This is the first purpose.

A second object is to make it easy to attach a spring for holding a decorative grill and to make it firmly attached.

A third object is to prevent the spring from coming off when the decorative grill is attached and detached, thereby improving workability.

[0009]

According to the present invention, there is provided a duct ventilation fan according to the present invention, comprising a box-shaped main body having an opening formed on a lower surface and a blower provided therein, and a long hole for spring engagement provided in the main body. A decorative grille provided with a protruding piece having an engagement hole formed on the back side in a bowl-like shape covering the opening, and an annular portion at the center movably engaged with the long hole for spring engagement. It has a bifurcated spring that is formed to open outward, a hook that the annular portion of the spring hooks on, and an engaging element that engages with an engaging hole provided in the decorative grille on one side, and the other on the other side. And a mounting plate provided with a mounting portion to be mounted on the decorative grill, wherein the mounting portion of the mounting plate is mounted on a side portion of the decorative grill by mounting means.

According to the present invention, it is possible to provide a duct ventilation fan that prevents spot welding dents and the like from appearing on the front of the decorative grille and has a small variation in the mounting strength of the mounting plate.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a box-shaped body having an opening formed on the lower surface and a blower provided therein, and a long hole for spring engagement provided in the body. A decorative grille provided with a protruding piece having an engagement hole formed on the back side in a bowl-like shape that covers the opening, and an annular portion at the center movably engaged with the long hole for spring engagement. A spring, which is formed to be open to the outside, a hook for engaging the annular portion of the spring, and an engaging element which engages with an engaging hole provided in the decorative grille; includes a mounting plate provided with mounting portions to be attached to the decorative grille, the mounting means a mounting portion of the mounting plate on the side of the decorative grill rivets
The spring attached to the decorative grill is provided with an engaging element of the mounting plate on the decorative grill with the annular portion formed at the center of the spring hooked on the hook of the mounting plate. The mounting portion provided on the other side of the mounting plate is attached to a side portion of the decorative grille by a rivet serving as a mounting means, so that the mounting portion is provided on the surface of the decorative grille which is easily seen by humans. In addition, spot welding dents and the like do not appear, and there is no variation in strength due to spot conditions, and it is possible to form the decorative grille and the mounting plate from different materials, Has an effective action.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. (Embodiment 1) As shown in FIGS. 1 and 2, a box-shaped orifice 4 having an opening 1 formed on the lower surface and a pair of orifices 4 formed with a pair of long holes 3 for spring engagement are formed inside. The main body 6 is installed on the ceiling surface 5, and the main body 6 is provided with an adapter 7 connected to a duct (not shown) communicating with the outside.

Also, a protruding piece 9 having an engagement hole 8 formed on the back side in a bowl-like shape that covers the opening 1 of the main body 6 is provided by cutting and raising, and a mounting hole 10 is provided on the side to provide a decorative grill 11. Form.

A bifurcated spring 12 which has an annular portion 12a at the center and is openable outwardly and movably engaged with the long hole 3 for spring engagement provided in the orifice 4 is formed. A hook 13 formed in an inverted L-shape so that the annular portion 12a is hooked, and an engaging element 14 that engages with an engaging hole 8 provided in the decorative grill 11 are provided on one side, and the other side of the decorative grill 11 is provided on the other side. A mounting plate 17 provided with a mounting portion 16 to be mounted by a rivet 15 serving as a mounting means inserted into the mounting hole 10 provided in the portion.

In the above configuration, when the spring 12 is mounted on the decorative grill 11, an annular portion 12 a provided at the center of the spring 12 is hooked on the hook 13 of the mounting plate 17 and provided on one side of the mounting plate 17. The hook 14 is inserted into the engaging hole 8 formed in the protruding piece 9 provided in the decorative grill 11, and the other mounting portion 16 is provided in the mounting hole 10 provided in the side of the decorative grill 11.
The spring 12 is attached to the decorative grill 11 by being attached by the rivet 15 inserted into the spring.

As described above, according to the duct ventilation fan of the first embodiment of the present invention, one of the springs 12 is engaged with the engaging hole 8 provided in the decorative grill 11, and the other is in the side of the decorative grill 11. Since it is attached using the attachment plate 17 attached by the rivet 15, the decorative grill 1
No dents or the like of spot welding appear on the front surface of 1, and there is no variation in strength due to spot conditions, and the decorative grill 11 and the mounting plate 17 can be formed of different materials. Thus, the strength of the mounting plate 17 can be easily increased.

[0017] (Embodiment 2) As shown in FIG. 3, engaging the engaging element 14A of the mounting plate 17A to be engaged with the engagement hole 8 provided in the projecting piece 9 of the decorative grill 11
It is configured to bend near the hole 8 in a direction away from the back of the decorative grill 11.

In the above configuration, when the mounting plate 17A is mounted on the decorative grill 11, the bent engaging element 14A is fitted along the back surface of the decorative grill 11 to engage the engaging engaging element 14A.
A is inserted into the engaging hole 8 while the mounting portion 16 of the mounting plate 17A is inserted.
To move to the back side of the makeup grill 11,
The mounting portion 16 is mounted on the decorative grill 11 with the rivets 15.

As described above, according to the duct ventilation fan of the second embodiment of the present invention, the engaging element 14A of the mounting plate 17A that engages with the engaging hole 8 provided in the decorative grill 11 is located near the engaging hole 8.
Is bent in a direction away from the rear surface of the makeup grille 11, so that when attaching the mounting plate 17A, the makeup grille 1
Since the mounting plate 17A is pivotally mounted along the back surface of the first grille 1, it is easy to mount the mounting plate 17A to the decorative grille 11, and the engaging element 14A is hard to be removed from the engaging hole 8 so that the mounting member is firmly mounted.

(Embodiment 3) As shown in FIG. 4, the hook 13A provided on the mounting plate 17B is opposite to the protruding piece 9 provided on the decorative grill 11 so that the annular portion 12a of the spring 12 faces the protruding piece 9. The L-shaped portion is disposed so as to face the protruding piece 9 side.

In the above configuration, the annular portion 12 of the spring 12
The hook 14a of the mounting plate 17B is inserted into the engaging hole 8 formed in the protruding piece 9 with the hook 14a hooked on the hook portion 13A, and the mounting portion 16 of the mounting plate 17B is attached to the decorative grill 1 by the rivet 15.
1, the top of the protruding piece 9 is arranged in a straight line with respect to the annular portion 12a hooked on the hook portion 13A, and the annular portion 12a of the spring 12 is moved to the hook portion 13a.
When trying to pull out further, the annular portion 12a
And will be accepted.

As described above, according to the duct ventilation fan of the third embodiment of the present invention, the spring 12 has the annular portion 12a located at the position facing the protruding piece 9 provided on the decorative grille 11. Since the hook 13A is formed, the spring 12 is connected to the hook 13
A does not come off, and workability at the time of attaching and detaching the decorative grill 11 is improved.

[0023]

As is clear from the above embodiment,
According to the present invention, a hook for engaging an annular portion of a bifurcated spring movably engaged with a long hole provided in a main body and an engaging element for engaging with an engaging hole provided on a back side of a decorative grill are provided. The spring is mounted by a mounting plate provided on one side and provided on the other side by a rivet serving as a mounting means on the side of the decorative grill, so that spot welding is performed on the front side of the decorative grill. It is possible to provide a duct ventilation fan that can prevent marks and the like from appearing and that has less variation in the mounting strength of the decorative grill.

Also, since the engaging element of the mounting plate that engages with the engaging hole provided in the decorative grill is bent near the engaging hole in a direction away from the rear surface of the decorative grill, the spring for holding the decorative grill can be mounted. Easy and firm mounting
This means that the bent part has two parts, the guide for the mounting plate and the locking.
Effect .

In addition, since the spring hook provided on the mounting plate is disposed so that the annular portion of the spring faces the protruding piece forming the engaging hole in the decorative grill, the spring is attached to and detached from the decorative grill. Detachment is prevented and the workability of attaching and detaching is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a mounting state of a decorative grill in a duct ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a main body and a decorative grille of the duct ventilation fan according to the first embodiment.

FIG. 3 is a cross-sectional view showing an installation state of a decorative grille in the duct ventilation fan according to the second embodiment.

FIG. 4 is a cross-sectional view showing an installation state of a decorative grill in the duct ventilation fan according to the third embodiment.

FIG. 5 is a perspective view showing a configuration of a makeup grill and a main body of a conventional duct ventilation fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening part 2 Blower 3 Slot 6 Main body 8 Engagement hole 9 Projection piece 11 Decorative grill 12 Spring 12a Annular part 13 Hook part 13A Hook part 14 Engagement element 14A Engagement element 15 Rivet 16 Mounting part 17 Mounting plate 17A Mounting plate 17B Mounting Board

Claims (3)

(57) [Claims] 1. A box-shaped main body having an opening formed in a lower surface and a blower provided therein, a spring-engaging long hole provided in the main body, and a bowl-shaped back cover that covers the opening. A decorative grille provided with a protruding piece having an engaging hole formed therein, and a bifurcated shape formed to have an annular portion at the center for movably engaging with the long hole for spring engagement and being opened outwardly. A mounting plate having, on one side, a spring, a hook portion on which the annular portion of the spring is hooked, and an engaging element for engaging an engaging hole provided in the decorative grille, and the other provided with a mounting portion to be mounted on the decorative grille; With
I and attachment means for attaching portion of the mounting plate on the side of the decorative grill
A ventilation fan for ducts that is configured to be mounted with rivets . 2. The duct according to claim 1 , wherein the engaging element of the mounting plate engaging with the engaging hole provided on the projecting piece of the decorative grill is bent near the engaging hole in a direction away from the rear surface of the decorative grill. For ventilation fan. 3. The ventilation fan for a duct according to claim 1, wherein a hook portion of the spring provided on the mounting plate is arranged such that the annular portion of the spring faces the projecting piece provided on the decorative grill.