JPH07292949A - Ventilator - Google Patents

Abstract

PURPOSE:To enhance productivity by arranging a number of blades perpendicularly crossing one another on the inner surface of a cylindrical main body open on both sides, while allowing the blades to freely turn, and molding a seat piece, which has screw through holes, integrally with the inside and outside surfaces of the cylindrical main body. CONSTITUTION:A ventilator 10 is formed of a thin metallic plate having a number of blades 13 perpendicularly crossing one another and arranged on the inner surface of a cylindrical main body 11 open on both sides, in such a way that the blades 13 freely turn. Tapped holes 15 are bored at both ends of each blade 13, and a screw mounting hole 14 is bored in the cylindrical main body 11 to face each tapped hole 15, and a seat piece 16 is inserted into the hole 14. Each blade 13 is held in position by inserting screws 17 into screw through holes 18 from the head 16a of the seat piece 16 and then threading the ends of the screws 17 into the tapped holes 15 at both ends of each blade 13. Thus an assembling operation is simplified to contribute to cost reduction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator, and more particularly to a ventilator in which assembly is simplified and productivity is improved.

[0002]

2. Description of the Related Art The applicant of the present application has filed a Japanese Patent Application No.
A patent application has been filed as No. -9979. Therefore, the ventilator will be described with reference to FIGS. In the figure, 1
Is a ventilator, and the ventilator 1 has a large number of blades 3, 3 ... Screw holes 4 and 4 are bored at both ends of the blade 3, and the screw holes 4 and 4 are provided at the mounting positions of the blades 3 of the cylindrical main body 2.
, And screw mounting holes 5, 5 ... Are opened.

Seat pieces 6 and 6 having an elastic force are disposed on the inner and outer surfaces of the screw mounting hole 5 of the cylindrical body 2.
One end surface of the seat piece 6 is formed along the side surface of the cylindrical main body 2, and a screw insertion hole 7 is opened. Thus, the seat pieces 6, 6 ... Are arranged in the screw mounting holes 5, 5 ... of the cylindrical main body 2, and the screws 8, 8 ...
... and the screw mounting holes 5 and 5 of the cylindrical body 2 and the screw insertion holes 7 and 7 of the seat pieces 6 and 6 of the inner surface, and the screws 8 and
8 are screwed into the screw holes 4 and 4 at the ends of the blades 3 and 3.
Then, the blades 3, 3, ... Are sequentially attached and crossed in a cross shape.

Thus, the attached blades 3, 3 ... Can be attached in close contact with the cylindrical main body 2 by the elastic force of the seat pieces 6, 6 ,. The angles of the blades 3, 3, ... Can be easily adjusted.

[0005]

In the above-mentioned ventilator, a seat piece is provided on the inner and outer surfaces of the cylindrical body at the position of the screw mounting hole, and the elastic force of the seat piece causes the blades to come into close contact with each other. It can be mounted on and is smoothly rotated. However, since the seat piece is provided with separate members on both inner and outer surfaces of the cylindrical main body, the number of parts is increased and the work such as temporary fixing of the seat piece is complicated and the workability of assembling the aerator is deteriorated. There is.

Therefore, there arises a technical problem to be solved in order to simplify the work of assembling the ventilator and improve the productivity, and an object of the present invention is to solve the problem.

[0007]

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object, and a large number of blades are crossed in a cross shape on the inner surface of a cylindrical main body of which both sides are open so as to be rotatable. In the provided ventilator, screw holes are formed at both ends of the blade, and a screw mounting hole is formed in the cylindrical body so as to face the screw hole. A seat piece to be inserted and fixed is formed by integral molding, and a screw insertion hole is opened in the seat piece, and a head and an insertion portion are provided, and the head is mounted with the screw. The stepped portion is formed so as to have a diameter larger than the inner diameter of the hole, and the surface of the stepped portion is formed so as to be provided along the outer surface of the cylindrical main body. Part is inserted into the screw mounting hole, and the tip of the part is protruded inward from the inner side surface of the cylindrical main body and is arranged in the cylindrical main body. Is opposed to the end portion of each blade that is,
A screw is inserted from the head of the seat piece, and the tip of the screw is screwed into the screw hole provided at the end of the blade to provide a ventilator for mounting each blade.

[0008]

When a large number of blades are arranged in a cross shape on the inner surface of the cylindrical main body, the seat piece is inserted into the screw mounting hole opened in the cylindrical main body, and the seat piece is inserted. Of the stepped portion provided on the front end surface of the head portion of the cylindrical body is brought into contact with the outer surface of the cylindrical body to project the head portion to the outer surface of the cylindrical body. Let Then, insert a screw from the head of the seat piece, screw the tip end of the screw into the screw hole of each blade facing the tip end of the seat piece, and attach the blade to the inner surface of the cylindrical body. Rotatably attached to.

Since the seat piece is integrally formed, it is not necessary to separately install two seat pieces, which are two pieces, inside and outside the cylindrical body when the blades of the ventilator are attached. The workability of attaching the blades is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In the figure, 10 is a ventilator, and FIG.
As shown in FIG. 3, the ventilator 10 is formed of a thin metal plate, and the ventilator 10 has a collar 12 on the front surface of a cylindrical body 11.
Is formed so as to project outward. The cylindrical main body 11 is inserted into a cylindrical hole provided in a wall portion (not shown) of the building by abutting the flange 12 against the wall surface to allow ventilation inside and outside the building. It is provided in.

Thus, the cylindrical main body 11 faces the two straight lines so that the two blades 13, 13 can be arranged at right angles to each other along the diameter line thereof. Screw mounting holes 14, 14, 14, 14 are opened at the front and rear portions. Then, the screw mounting holes 14, 14 ... Are opened in parallel to the two diameter lines of the above, and in the cylindrical main body 11 facing each other on a straight line having a predetermined interval. .. are provided in one side portion of the cylindrical main body 11 and are interposed between the screw mounting holes 14, 14 ... Are disposed on the front surface and the rear surface, respectively, and further, the blades 13, 13 ...
Are arranged so as to cross in a cross shape and have a net shape as a whole.

The blade 13 is made of metal, and one side portion in the longitudinal direction thereof is formed as a thick portion 13a, and
Both ends are notched 13b and 13b, and an intermediate portion is formed as a thin portion 13c. In addition, the screw holes 15 and 15 are opened at both ends of the thick portion 13a to make the screw holes 15 and 1.
It is configured such that the blade 13 can be attached to the inner surface of the cylindrical main body 11 by screwing a screw 17 on the seat 5 through seats 16, 16 described later.

Next, the seat piece 16 will be described. The seat piece 16 is made of an elastic material such as nylon, and
It has screw insertion holes 18 open on both sides. Further, the seat piece 16
The ones arranged at both ends of the predetermined blade 13 and those used for the blades 13 having the same length have substantially the same shape. When the seat piece 16 is inserted into the screw mounting hole 14 of the cylindrical main body 11, the head 16a, which is a portion projecting to the outside of the cylindrical main body 11, and the above-mentioned head provided on the cylindrical main body 11. It is inserted into the screw insertion hole 18, and
The distal end portion is integrally formed with the insertion portion 16b, which is a portion protruding inside the cylindrical main body 11.

Further, in the seat piece 16, the head 16a has a diameter of the head 16a so that the head 16a can be projected to the outer surface of the cylindrical main body 11 so as to abut against the outer surface 11a of the cylindrical main body 11. A stepped portion 16c is formed to have a larger diameter than the screw mounting hole 14. Further, the surfaces of the stepped portions 16c, 16c ... Are formed into curved surfaces along the outer surface of the corresponding cylindrical main body 11 so as to be in close contact with the outer surface 11a of the cylindrical main body 11. Further, each of the seat pieces 16 has the screw 1
The screw hole 15 for inserting 7 is opened, and the seat piece 16 is aligned with the straight line of the corresponding blade 13 so that the screw hole 15 faces the screw hole 15 provided at the end of the blade 13. Naturally, it is provided.

When assembling the ventilator 10, first, the screw mounting holes 14, which are opened in the cylindrical main body 11,
14 are inserted from the outer surface 11a of the cylindrical main body 11. At this time, the seat piece 1
Stepped portions 16c, 16c respectively formed on 6, 16 ...
The surface of ... Abuts the outer surface 11a of the cylindrical main body 11,
The heads 16a, 16a, ... Of the seat pieces 16, 16, ... Project outward from the outer side surface 11a of the cylindrical body 11, and the insertion portions 16b, 16b of the seat pieces 16, 16 ,. The screw mounting holes 14, 14 ... Provided in the main body 11 are respectively inserted, and the tips thereof project inside the cylindrical main body 11. Thus, the amount of protrusion of these things is decided arbitrarily,
It is possible to prevent it from becoming too large.

Of the seat pieces 16, 16 inserted into the cylindrical body 11, the blades 13, 13 ... Corresponding to the seat pieces 16, 16 ...
Of the seat pieces 16, 16 ... Are inserted into the screw insertion holes 18, 18, respectively from the head portions 16a, 16a of the seat pieces 16, 16 ,.
The blades 7, 13 ... Are attached by screwing the tips of the blades 7 into screw holes 15, 15 provided at both ends of the blades 13, 13. At this time, the insertion portions 16b, 1 of the seat pieces 16, 16 ...
6b ... Respective screw mounting holes 14 formed in the cylindrical body 11,
The blades 13, 13 ...
The blades 13, which allow the rotation of the
13 ... Can be held at the angle.

On the other hand, the stepped portions 16c of the seat pieces 16, 16 ...
Since 16c is in close contact with the outer surface 11a of the cylindrical main body 11, the seat pieces 16, 16, ... Are not displaced or accidentally separated. The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified one.

[0018]

As described in detail in the above embodiment, the present invention integrally forms a seat piece inside and outside the cylindrical body for rotating the blade and stopping it at an arbitrary angle. Therefore, when the seat piece is attached, the seat piece can be temporarily fixed beforehand by inserting the seat piece into the screw mounting hole of the cylindrical main body.
This is an invention that exhibits remarkable effects such that the blades can be attached very easily and quickly in combination with the reduction in the number of parts, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a ventilator according to an embodiment of the present invention.

FIG. 2 is a rear view of FIG.

FIG. 3 is a side view of FIG.

FIG. 4 is an enlarged sectional view of an essential part of an embodiment of the present invention.

FIG. 5 is a partially cutaway perspective view of a blade according to an embodiment of the present invention.

FIG. 6 is a developed perspective view of a seat piece and a screw according to an embodiment of the present invention.

FIG. 7 is a partially cutaway enlarged cross-sectional view showing a mounting state of a seat piece and blades according to an embodiment of the present invention.

FIG. 8 is a front view of the ventilator of the prior invention.

9 is a side view of FIG.

FIG. 10 is an enlarged cross-sectional view showing a portion in which the end portion of the blade of the prior invention is attached to the cylindrical main body.

FIG. 11 is a partially cutaway perspective view of the blade of the prior invention.

FIG. 12 is a developed perspective view of a seat piece and a screw of the prior invention.

[Explanation of symbols]

 10 Ventilator 11 Cylindrical body 13 Blade 14 Screw mounting hole 15 Screw hole 16 Seat piece 16a Head 16b Insertion portion 16c Stepped portion 17 Screw 18 Screw insertion hole

Claims (1)

[Claims] 1. A ventilator in which a large number of blades are rotatably arranged so as to cross in a cross shape on the inner surface of a cylindrical main body with both sides open, and screw holes are formed at both ends of the blades. Further, a screw mounting hole is opened in the cylindrical body so as to face the screw hole, and further,
A seat piece to be inserted into the screw mounting hole to be fixed is formed by integral molding, and a screw insertion hole is formed in the seat piece, and a head portion and an insertion portion are provided. The portion is stepped with respect to the insertion portion so as to have a diameter larger than the inner diameter of the screw mounting hole, and the surface of the stepped portion is formed so as to be provided along the outer surface of the cylindrical body. Further, while inserting the insertion portion into the screw mounting hole, the tip end of the insertion portion protrudes inward from the inner side surface of the cylindrical main body and faces the end of each blade disposed on the cylindrical main body, A ventilator in which each blade is attached by inserting a screw from the head of the seat piece and screwing the tip end of the screw into the screw hole provided at the end of the blade.