JP2003194383A - Ventilation fan for duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance workability in fitting of a bundling terminal and an electric component. <P>SOLUTION: This ventilation fan for a duct has a fan 16, a motor 9 driving the fan 15, a terminal 24 to which an outside electric source wire 40 for supplying power to the motor 9 is connected, a capacitor 26 serving as the electric component connecting the terminal 24 and the motor 9, and fittings 27 for fitting the terminal 24 to a body case 1 and the capacitor 26 and the terminal 24 are jointly fastened. Therefore, separate screwing of the bundling terminal and the capacitor to the fittings is made unnecessary, and since fitting with one screw is made possible, fitting workability is enhanced. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct ventilation fan provided with an electric part between a terminal to which an external power supply line is connected and a motor.

[0002]

2. Description of the Related Art As conventional ventilation fans for ducts, those shown in FIGS. 10 and 11 are known.

As shown in the figure, a bottom plate 53 having an intake hole 52 formed therein, a fan 55 surrounded by a fan casing 54, and a motor 56 for driving the fan 55 are provided in a main body case 51 which opens downward. An external power supply line (not shown) for supplying electric power to the motor 56 is provided on the top surface 51 a of the main body case 51 and the fan casing 5 in the main body case 51.
4 is formed with an insertion hole 57 for drawing in to the outside.

A fitting 58 is attached near the insertion hole 57. A terminal 59, to which an external power supply line is connected, is attached to the mounting bracket 58 by connecting the connecting surface 59a to the main body case 5.
1 is attached with a screw 60 in a state of facing the opening side, and a capacitor 61 as an electric component connected to the terminal 59 and the motor 56 is attached with another screw 62.

However, as described above, the mounting bracket 58
Since the terminal 59 and the capacitor 61 are attached to each other with the screw 60 and the screw 62, the attaching work is complicated.

When connecting the external power supply line to the quick-connect terminal 59, the external power supply line is temporarily pulled into the main body case 51 from the insertion hole 57 on the top surface 51a side of the main body case 51, and then the main body case 51 is closed. Since the connection is made from the opening side to the terminal 59, the wiring work is complicated.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a duct ventilation fan which can improve workability when attaching terminals and electric parts.

[0008]

[Means for Solving the Problems] A means for solving the above problems is to provide a terminal in a main body case to which a fan, a motor for driving the fan, and an external power supply line for supplying electric power to the motor are connected. A duct ventilation fan having an electric component connected between the quick-connect terminal and the motor, and a mounting member for mounting the terminal on the main body case, wherein the mounting member includes both the electric component and the terminal. It is tightened.

As a result, it is not necessary to screw the terminal and the capacitor to the mounting bracket with separate screws, and the mounting can be performed with a single screw, thus improving the mounting workability.

In the above structure, the main body case projects from the opening formed in the ceiling to the back of the ceiling, and the connection surface to which the external power supply line of the terminal is connected is formed on the top surface of the main body case. It is more exposed.

Thus, the external power supply line can be easily connected to the terminal from the outside of the main body case without pulling the power supply line from the outside of the main body case into the main body case. You can improve the property.

Further, a holding portion for holding the wiring cord between the motor and the terminal with the top surface of the main body case is formed on the mounting member.

Thus, the wiring cord can be prevented from slackening downward and the wiring cord can be reliably prevented from coming into contact with the fan and being damaged.

Further, an insertion piece to be inserted into an insertion hole formed in the main body case is formed on one end side of the mounting bracket, and a screwing portion to be screwed to the main body case is formed on the other end side. It is what

Thus, it is not necessary to screw one end and the other end of the mounting bracket to each other, and the mounting bracket can be attached to the main body case with one screw, thus improving workability.

Further, the insertion piece and the screw fastening portion are formed on the holding portion.

As a result, since the holding portion side is firmly fixed, the wiring cord can be firmly held.

The fan is surrounded by a fan casing, and the terminals are arranged outside the fan casing and at a corner of the main body case.

This makes it possible to easily arrange the terminals by utilizing the space formed at the corner of the main body case outside the fan casing.

Further, in detail, the electric component is a capacitor.

Further, in detail, the terminal is a quick-connect terminal.

Thus, the external power supply line can be easily connected to the terminal only by inserting the external power supply line without using a screw or the like.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A duct ventilation fan according to a first embodiment of the present invention will be described with reference to FIGS. The upper and lower relations of the body case 1 are such that the side on which the flange 2 is formed is down and the side on which the motor 9 is attached is up.

Reference numeral 1 denotes a box-shaped main body case having an opening at the bottom. As shown in FIGS. 1 and 2, a flange 2 is formed at the peripheral edge of the opening, and an opening hole 3 formed at a ceiling 3 is formed.
The flange 2 is projected to the back of the ceiling from a, and the flange 2 is attached so as to abut on the room 4 side around the opening hole 3a. An escape hole 5 for causing a motor 9 to be described later to project outward is formed substantially in the center of the top surface 1a of the body case 1, and a wiring hole 6 is provided at a corner.
(See FIG. 3) are formed. Top surface 1 of body case 1
A groove portion 7 is formed on the inner surface of a from the periphery of the escape hole 5 toward the outside, and a wiring cord 13 drawn from a motor 9 described later is arranged in the groove portion 7. Further, a grill (not shown) having an intake port is attached to the opening side of the main body case 1, and a duct connection plate 8 is detachably attached to the side face so as to cover the exhaust port (not shown). .

Reference numeral 9 denotes a motor in which a flange 11 is formed substantially in the center of the case 10, and the drive shaft 1 is provided from one side of the case 10.
2 is projected and the wiring cord 13 is pulled out from the vicinity of the flange 11. The motor 9 is attached with a screw 14 with the flange 11 abutting against the inner surface of the top surface 1a of the main body case 1 with the drive shaft 12 facing downward.

A fan 15 is attached to the drive shaft 12, and is a sirocco fan here. The side of the fan 15 is surrounded by a plate-shaped fan casing 16 attached to the top surface 1a of the main body case 1, and the opening side of the main body case 1 is covered with a bottom plate 18 having an intake hole 17 formed substantially in the center. ing. As a result, the air sucked from the air intake holes 17 by driving the fan 15 can be prevented from flowing into the fan casing 16.
And the bottom plate 18 guides the gas to the exhaust port.

Reference numeral 19 is a holding portion for holding the wiring cord 13. As shown in FIG. 4, an insertion piece 21 to be inserted into an insertion hole 20 formed in the main body case 1 is formed on one end side, and the other end side is formed. A screw stop 23 into which the screw 22 is inserted is formed. The holding portion 19 holds the wiring cord 13 from the vicinity of the outer periphery of the fan 15 to the outside of the fan casing 16. Further, the fan 15 side and the opposite end are bent toward the opening side of the main body case 1.

Reference numeral 24 is a terminal formed in a substantially rectangular shape, and here, a quick-connect terminal which can be connected to the external power supply line by simply inserting the external power supply line is used. This terminal 24 is shown in FIGS.
As shown in FIG. 3, a connection surface 24a to which the external power supply line 40 for supplying electric power is connected is formed on one side surface, and three wires 13a, 13b, 13c of the wiring cord 13 are formed on the surface adjacent to the one side surface.
Two of the lines 13a and 13b are connected to each other, and an alternating current of 100 V is supplied between the two lines 13a and 13b. A female screw 24b with which a screw 25 is screwed is formed on the side opposite to the one side surface of the terminal 24.

Reference numeral 26 denotes a capacitor as an electric component, which is installed on the surface of the terminal 24 on which the female screw 24b is provided. Electrically, one end side of the capacitor 26 is connected to the remaining line 13c of the wiring cord 13, and the other end side is connected to the terminal 24 together with the line 13b of the wiring cord 13. A flange 41 is formed on the capacitor 26 along the installation surface of the terminal 24. A hole into which the screw 25 is inserted is formed in the flange 41.

Reference numeral 27 is a metal fitting for mounting the terminal 24, and a hole (not shown) into which the screw 25 is inserted is formed at the substantially center of the upper part. The mounting bracket 27 and the capacitor 26 are fastened together with the female screw 24b of the terminal 24 with the screw 25, and as a result, the terminal 24 and the capacitor 26 are mounted on the mounting bracket 27 with one screw 25. Further, in the mounting bracket 27, the connection surface 24a of the terminal 24 has the wiring hole 6
The screw 2 on the top surface 1a of the main body case 1 when facing the front (Fig. 6).
Attached at 8.

In the duct ventilation fan having the above structure, the terminal 24 and the capacitor 26 are attached to the top surface 1a of the main body case 1 by means of the mounting bracket 2
When attaching with 7, the terminal 24 and the capacitor 26 are attached to the attachment fitting 27 with one screw 25 as described above. Therefore, it is necessary to attach the terminal 24 and the capacitor 26 to the attachment fitting 27 with each screw. There is no, and workability can be improved.

At this time, since the terminal 24 is attached by the mounting bracket 27 to the wiring hole 6 formed in the top surface 1a of the main body case 1 so as to face the connection surface 24a, the external power supply line 40 is attached inside the main body case 1. It is possible to connect to the terminal 24 from the outside of the main body case 1 without pulling it in and to perform wiring work easily.

Further, since the terminals 24 are arranged at the corners of the main body case 1 outside the fan casing 16, the terminals 24 can be easily arranged by utilizing the space formed at the corners of the main body case 1. be able to.

By the way, since the wiring cord 13 is held by the holding portion 19 in the groove portion 7 formed on the top surface 1a of the main body case 1, the wiring cord 13 is prevented from loosening and coming into contact with the fan 15 and being damaged. it can.

As described above, in the holding portion 19, the insertion piece 21 on one end side is inserted into the insertion hole 20 formed in the main body case 1, and the screw 22 is inserted into the screw fixing portion 23 on the other end side to form the main body. Since it is attached to the top surface 1a of the case 1 with one screw 22, the attachment work can be easily performed.

Next, a second embodiment of the present invention will be described with reference to FIGS. 7 to 9. The same parts are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 31 designates the terminal 24 as the top surface 1a of the main body case 1.
It is a mounting bracket to be attached to, like the first embodiment,
The fitting 31 and the capacitor 26 are fastened together with the female screw 24b of the terminal 24 with the screw 25. This mounting bracket 3
1 is the connection surface 24 of the terminal 24, as in the first embodiment.
It is attached to the top surface 1a of the main body case 1 in a state of facing a wiring hole 6 formed on the top surface 1a of the main body case 1.

Further, the wiring cord 1 is attached to the fitting 31.
A holding portion 32 that holds 3 in the groove portion 7 is integrally formed. An insertion piece 21 to be inserted into the insertion hole 20 of the body case 1 is formed on one end side of the holding portion 32, and a screwing portion 23 into which a screw 22 for attaching to the body case 1 is inserted is formed on the other end side. Has been formed.

As described above, in the second embodiment, the holding part 32 is integrally formed with the mounting member 31, so that the number of parts can be reduced and the cost can be reduced.

By forming the insertion piece 21 and the screwing portion 23 on the holding portion 32, the holding portion 32 side of the mounting member 31 is firmly fixed, and the wiring cord 13 can be firmly held.

Although the mounting bracket 27 is mounted with the two screws 28 in the first embodiment, the insertion piece 21 is attached to one end of the mounting bracket 27 as in the second embodiment. , A screwing portion 23 is formed on the other end side, and the mounting bracket 2
7 can also be attached with one screw.

[0042]

According to the first aspect of the present invention, the quick-connect terminal and the capacitor need not be separately screwed to the mounting bracket, and can be mounted with a single screw, which improves mounting workability. it can.

According to the second aspect of the present invention, the external power supply line can be easily connected to the quick-connect terminal from the outside of the main body case without pulling the power supply line from the outside of the main body case into the main body case. The workability when attaching the case to the ceiling surface can be improved.

According to the third aspect of the present invention, it is possible to prevent the wiring cord from slackening downward and to reliably prevent the wiring cord from coming into contact with the fan and being damaged.

According to the fourth aspect of the present invention, it is not necessary to screw one end side and the other end side of the mounting bracket, and the mounting bracket can be mounted with a single screw, thus improving workability.

According to the fifth aspect of the present invention, since the holding portion side is firmly fixed, the wiring cord can be firmly held.

According to the sixth aspect of the present invention, it is possible to easily dispose the quick-connect terminals by utilizing the space formed at the corner of the main body case outside the fan casing.

According to the seventh aspect of the present invention, the capacitor can be attached to the attachment fitting together with the quick-connect terminal with one screw, and the workability can be improved.

According to the eighth aspect of the present invention, the external power supply line can be easily connected to the terminal only by inserting the external power supply line without using a screw or the like.

[Brief description of drawings]

FIG. 1 is a bottom view of a duct ventilation fan according to a first embodiment of the present invention with a grill, a bottom plate, a fan casing, and a fan removed.

FIG. 2 is a side sectional view of the duct ventilation fan with a grill removed.

FIG. 3 is a plan view of the ventilation fan for the duct.

FIG. 4 is an enlarged view of a main part near a capacitor in FIG.

5 is a cross-sectional view taken along the line AA in FIG.

FIG. 6 is a view on arrow B in FIG.

FIG. 7 is an enlarged bottom view of the vicinity of the condenser of the duct ventilation fan according to the second embodiment of the present invention.

8 is a cross-sectional view taken along line CC of FIG.

FIG. 9 is a cross-sectional view of DEFG in FIG.

FIG. 10 is a partially cutaway bottom view of a conventional duct ventilation fan with a grill removed.

FIG. 11 is a side cross-sectional view of the ventilation fan for the duct with the grill removed.

[Explanation of symbols]

1 body case 1a Top surface of body case 3 ceiling 4 openings 6 wiring holes 9 motors 13 wiring code 15 fans 16 fan casing 19 Holding part 21 Insert 23 Screw stop 24 terminals (quick connection terminals) 24a Terminal connection surface 26 Capacitors (electrical parts) 27 Mounting bracket 31 Mounting bracket 32 holding part 40 external power line

Claims (8)

[Claims] 1. A fan, a motor for driving the fan, a terminal to which an external power supply line for supplying electric power to the motor is connected, and a terminal connected between the terminal and the motor in a main body case. A ventilation fan for a duct, comprising: an electric component; and a fitting for attaching the terminal to the main body case, wherein the fitting and the terminal are fastened together. 2. The main body case is projected to the back of the ceiling from an opening formed in the ceiling, and a connection surface of the terminal to which the external power supply line is connected is exposed from a wiring hole formed on the top surface of the main body case. The ventilation fan for ducts according to claim 1, wherein the ventilation fan is for ducts. 3. The holding member for holding the wiring cord between the motor and the terminal between the mounting bracket and the top surface of the main body case is formed in the mounting bracket. Ventilation fan for duct described in. 4. An insertion piece to be inserted into an insertion hole formed in the main body case is formed on one end side of the mounting bracket,
The duct ventilation fan according to claim 3, wherein a screwing portion that is screwed to the main body case is formed on the other end side. 5. The duct ventilation fan according to claim 4, wherein the retaining piece is formed with the insertion piece and a screwing portion. 6. The fan according to claim 1, wherein the fan is surrounded by a fan casing, and the quick-connect terminals are arranged outside the fan casing and in a corner portion of the main body case. Ventilation fan for duct described in Crab. 7. The duct ventilation fan according to claim 1, wherein the electric component is a capacitor. 8. The duct ventilation fan according to claim 1, wherein the terminal is a quick-connect terminal.