JPH11211180A - Ventilation fan for duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify an operation when assembling products and at the same time easily perform an operation for connecting a power cord to a fast- connection terminal and an operation for inspection and repairing the connection part without being interfered with a duct and without being interfered with the formation position of a working port. SOLUTION: A fast-connection terminal 40 for connecting a power cord wire 52 for feeding power to a motor 25 is provided inside a part that projects from a body frame upper wall 23a of a motor frame 35, and at the same time a wire-leading entrance 47 for the fast-connection terminal 40 is formed at a part being located at the opposite side of a breathing port 30 where a duct 32 is connected out of a part projecting from the body frame upper wall 23a of the motor frame 35.

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 having an improved structure for connecting a power cord to a motor.

[0002]

2. Description of the Related Art Conventionally, in this type of ventilation fan for a duct, as shown in FIG. 9, a motor 2 is provided in a main body frame 1 and a blower blade 3 is rotated by the motor 2. I have. An electric component box 5 is provided inside the main body frame 1 together with a casing 4 surrounding the blower blade 3, and a quick connection terminal 6 is housed inside the electric component box 5. In addition, inside the electrical component box 5,
A capacitor 7 required for operation of the motor 2 is also stored.

[0003] The quick-connecting terminal 6 is used to hold a conductive wire in a connected state only by inserting it, and is also called an SL (screwless) terminal. The lead wire 8 is connected in advance using a solder or a closed end connector (not shown), and the connected quick connection terminal 6 is housed in the electrical component box 5. Note that the lead wire 8 is also connected to the capacitor 7 in advance by using solder or a closed-end connector. Further, between the quick connection terminal 6 and the capacitor 7, the solder Connected in advance using a closed-end connector.

In the quick connection terminal 6, a conductive wire 10a of a power cord 10 introduced into the main body frame 1 from outside the main frame 1 (behind the ceiling) is inserted from below at the time of installation work of the ventilation fan. Thus, the motor 2 is supplied with power from the power cord 10 via the quick connection terminal 6 and the capacitor 7, and the power supply drives the blower blades 3 to rotate. The air in the facing room 11 passes through the inside of the main body frame 1 and is discharged outside through the duct 12 connected to the main body frame 1.

[0005] In this case, the connection of the lead wire 8 derived from the motor 2 to the quick connection terminal 6 and the storage of the connected quick connection terminal 6 in the electrical equipment box 5 are all performed when the ventilation fan is assembled in the product. Therefore, the product assembling work is complicated.

Therefore, as shown in FIG. 10, the present applicant connects the quick connection terminal 6 together with the capacitor 7 to the motor 2.
(See Japanese Patent Application Laid-Open No. 9-159245).

According to this, the quick-connecting terminal 6 is housed in the motor frame 13 in advance, so that the motor 2 is attached to the main body frame 1 at the time of assembling the product. As a result, assembly of the quick connection terminal 6 at the time of product assembly can be eliminated. Also, the connection between the motor 2 and the quick connection terminal 6 can be made when the quick connection terminal 6 is housed inside the motor 2, and the trouble of the connection can be eliminated when assembling the product.

[0008]

In the case of the above-mentioned idea, there is no trouble in separately assembling the quick connection terminals 6 and no trouble in connecting the quick connection terminals 6 at the time of product assembly. The work at the time of product assembly can be simplified as desired.

However, in this case, the portion of the motor frame 13 in which the quick connection terminal 6 is housed is a portion that protrudes outward (upward) from the upper wall 1a of the main body frame 1, and the power supply to the quick connection terminal 6 The cord wire 10 is connected to the ceiling 14
The operator leans out of the body through a working opening (not shown) formed in the main body 1 and is performed outside the main body frame 1 (behind the ceiling).

In this case, the space behind the ceiling is generally narrow, and the duct 12 connected to the main frame 1 is located there. For this reason, the connection work is hindered by the duct 12 and an unreasonable posture is created,
Has difficulties such as hard to reach or see,
There was a problem that work was not easy.

In addition, the working port is formed at any other position except for the duct 12 side, and the position of the working port (eg, the side completely opposite to the direction of the quick connection terminal 6).
However, there is a problem that the work becomes more difficult. In addition, they have a problem that inspection and repair during the use period after the installation are performed from the working opening as well as during the installation work, and the inspection and repair cannot be easily performed. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and accordingly, has as its object not only simplification of the work at the time of assembling a product, but also easy work of connecting a power cord line to a quick connection terminal. In addition, check the connection,
An object of the present invention is to provide a duct ventilation fan that can easily perform repair and other operations.

[0013]

In order to achieve the above-mentioned object, a duct ventilation fan according to the present invention comprises a main body frame having a ventilation port on a side wall to which a duct is connected, and a part of a motor frame attached to the main body frame. A motor mounted so as to protrude outward from the upper wall of the main body frame, and a blower blade rotationally driven by the motor, and a quick connection terminal for connecting a power cord wire for supplying power to the motor, Along with being internally provided in a portion protruding from the upper wall of the main body frame of the motor frame, a wire entrance for the quick connection terminal is formed as a vent of the main body frame of the portion protruding from the upper wall of the main body frame of the motor frame. Is formed on a portion located on the opposite side.

According to this configuration, since the quick connection terminal is provided in the motor frame, the motor can be mounted on the main body frame at the time of assembling the product, so that the quick connection terminal can be assembled to the main body frame at the same time. Therefore, the trouble of separately assembling the quick connection terminal at the time of product assembly can be eliminated.
In addition, the connection between the motor and the quick-connecting terminal can be made when the quick-connecting terminal is provided inside the motor frame.

Since the portion of the motor frame accommodating the quick connection terminal is a portion protruding outward from the upper wall of the main body frame, connection of the power cord to the quick connection terminal, and inspection and repair of the connection portion. Are performed outside the body frame (behind the ceiling), but the wire entrance for the quick connection terminal is on the side of the portion of the motor frame protruding from the upper wall of the body frame opposite to the body frame vent. That is, since it is formed in the part located on the opposite side to the duct connected to the ventilation port, it is possible to work on it without disturbing the duct, avoiding the duct side and other arbitrary There is no case that the position is completely opposite to the work opening formed at the position.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 1 shows the entire duct ventilation fan in an attached state, and a main body frame 23 is attached to a field edge 22 on the back surface of a ceiling 21 by a screw or the like (not shown) by a flange 24 at a lower peripheral edge. . The main body frame 23 is formed in a rectangular parallelepiped box shape by bending an iron plate or molding a synthetic resin, and has a motor 25 attached to a substantially central portion of an upper wall 23a.

Further, inside the main body frame 23, a blowing blade 26 is provided.
Is mounted on the rotating shaft 27 projecting downward of the motor 25, so that the blower blades 26
5 is driven to rotate. Further, a casing 28 surrounding the blower blade 26 is attached inside the main body frame 23, and the casing 28 has an intake port 29 on a lower surface portion.

In contrast to the intake port 29, a ventilation port, in this case, an exhaust port 30 is provided on the right side wall 23b of the main body frame 23 in the drawing.
Is formed. In addition, an exhaust port 3 is provided on the outer surface of the side wall 23b.
A duct connection tube 31 communicating with the tube 0 is attached, and a duct 32 is connected to the tube connection tube 31. Therefore, this duct 32
Is also connected to the exhaust port 30 via a duct connection tube 31.

Here, FIGS. 2 and 3 show the motor 25.
Is shown in detail. That is, this motor 25
In this case, a cylindrical cap-shaped upper frame 33 whose lower surface is open and a cylindrical box-shaped lower frame 34 whose upper surface is open
(A motor frame) 35 comprising a stator 36 and a rotor 37 disposed therein, the rotary shaft 27 being inserted therethrough, and further supporting the rotary shaft 27. Bearings 38 and 39 are provided.

In the upper frame 33 of the motor frame 35, a quick connection terminal 40 and a capacitor 41 are housed and fixed together with the circuit board 42 while mounted on the circuit board 42. FIG. 4 shows the circuit board 42, and the quick connection terminal 40 and the capacitor 41 are connected by the wiring pattern 43 of the circuit board 42.
The connection between the quick connection terminal 40 and the capacitor 41 and the stator 36 of the motor 25 is made by the wiring pattern 43 of the circuit board 42 and the lead wire 44 shown in FIG.

Further, FIG. 2 shows two wire insertion holes 45 formed on the outer surface of the quick-connecting terminal 40 and a release button 46 located therebetween.
The conductive wire has a mechanism for restraining and holding the conductive wire in the connected state only by inserting the conductive wire from the wire insertion opening 45. By pressing the release button 46 with, for example, a thin tool, the conductive wire restrained and held in the above-described connected state can be held. It is released and can be pulled out from the wire insertion port 45.

In contrast to such a quick connection terminal 40, the upper frame 33 of the motor frame 35 has
Line entrance 4 facing line insertion opening 45 and release button 46
7 are formed. The capacitor 41 is connected to the motor 25
Has the capacitance required for the operation of

The upper frame 33 and the lower frame 34 of the motor frame 35 are formed with flange portions 33a and 34a extending outward at the respective opening edges, so that the motor 25 can be attached to the main frame 23. about,
Lower frame 3 below these flange portions 33a, 34a
4 is inserted from above into a motor mounting port 48 (see FIG. 1) formed in a substantially central portion of the upper wall 23 a of the main body frame 23,
The flanges 33a and 34a are placed on the peripheral edge of the motor mounting port 48, and screws 50 are respectively passed through a plurality of mounting holes 49 (see FIG. 2) formed in advance on the flanges 33a and 34a. This is done by screwing into the periphery of the motor mounting port 48 and tightening.

As a result, the motor 25 moves the upper frame 33, which is a part of the motor frame 35, to the upper wall 2 of the main frame 23.
3a is mounted so as to protrude outward (upward) from
Accordingly, the wire entrance 47 formed in the upper frame 33 is formed.
Are also located outside the upper wall 23a of the main body frame 23, and are directed to the side parallel to the ceiling 21 at this position. Further, in this case, the motor 25 performs the above-described mounting in a state where the wire entrance 47 is located on the opposite side of the exhaust port 30 of the main body frame 23, whereby the wire entrance 47 is connected to the exhaust port of the main body frame 23. 30 is located on the opposite side.

In addition, the main frame 23 is located in the vicinity of the line entrance 47, particularly immediately before (directly next to) the line entrance 47.
A fastener 51 is provided on the upper wall 23a. This fastening tool 51 is for fastening the front end of the power cord wire 52.
In detail, in this case, as shown in FIG. 5, it is made of a band made of metal or synthetic resin, and is wound around the end of the power cord 52, and both ends are joined together. The portion is fixed to the upper wall 23a of the main body frame 23 with a screw 53, so that the distal end of the power cord 52 is fastened.

As shown in FIG. 2, a screw 54 made of a conductive material such as copper is provided on the upper wall of the upper frame 33 of the motor frame 35, thereby providing a ground wire as shown in FIG. 55 is attached to and connected to the motor frame 35.

FIG. 6 shows a working port 56 formed in the ceiling 21 at a position near the duct 32 side in the vicinity of the portion where the main body frame 23 is attached. In this case, for example, it is behind (upper in the figure) the main body frame 23, but in addition, it is previously set at an arbitrary position, such as the left side or the front (lower in the figure) shown by a two-dot chain line. Is formed. FIG. 6 also shows an outdoor 57 facing the front end of the duct 32. A hood 59 for covering the front end of the duct 32 is attached to a wall 58 of a house facing the outdoor 57. I have.

Next, the merits of the above configuration will be described. In the case of the above configuration, the duct connection tube 31 is attached to the body frame 23, the motor 25 is attached to the body frame 23, the blower blade 26 is attached to the rotating shaft 27 of the motor 25, the casing 28 is attached to the body frame 23, and The fixing of the power supply cord 52 to the main body frame 23 is performed at the time of product assembly of the ventilation fan.

Then, the ventilation fan product assembled in this manner is attached by attaching the main frame 23 to the ridge 22 of the ceiling 21, connecting the duct 32 to the duct connection tube 31, and connecting the power cord 52 to the quick connection terminal 40. Do with. In particular, the connection of the power cord 52 to the quick connection terminal 40 is as follows.
An operator leans out of the body through a working port 56 formed in the ceiling 21 and peels off the insulating coating at the end of the power cord 52 to expose the conductive wire 52a (see FIG. 1). This is performed by inserting the wire into the quick connection terminal 40 from the wire insertion port 45 of the quick connection terminal 40 through the wire entrance 47 of the frame 35.

The quick connection terminal 40 is provided inside the motor frame 35. Therefore, by installing the quick connection terminal 40 in the motor frame 35 in advance,
At the time of product assembly, the motor 25 is attached to the main body frame 23, so that the quick connection terminal 40 can be mounted on the main body frame 23 at the same time, eliminating the trouble of separately mounting the quick connection terminal 40 during product assembly. Can be. Also, the motor 25
The connection between the quick connection terminal 40 and the quick connection terminal 40 can be made when the quick connection terminal 40 is provided inside the motor frame 35, so that it is possible to eliminate the trouble of the connection at the time of assembling the product. It can be simplified as desired.

When mounting the ventilation fan, the portion of the motor frame 35 accommodating the quick connection terminal 40 is attached to the main body frame 2.
3 is a portion projecting outward from the upper wall 23a. Therefore, the connection of the power cord 52 to the quick connection terminal 40
This is performed outside the main body frame 23 (behind the ceiling). Inspection, repair, and the like of the connection portion during the use period after the attachment are performed outside the main body frame 23 (behind the ceiling).

On the other hand, in the case of the above-mentioned structure, the wire entrance 47 for the quick connection terminal 40 is provided in the main frame 23 of the portion of the motor frame 35 projecting from the upper wall 23a of the main frame 23. 23 is formed on the side opposite to the exhaust port 30, that is, on the side opposite to the duct 32 connected to the exhaust port 30.
Work can be carried out without being disturbed by the obstacles. Can be easily done.

Further, a working port 56 for performing these operations is provided.
However, even in a situation where it is formed at any other position avoiding the duct 32 side, the wire entrance 47 for the quick connection terminal 40 is opposite to the exhaust port 30 (the duct 32) of the main body frame 23. In the above-described configuration formed in the portion located on the side, the line entrance 47 does not become on the opposite side to the work port 56, but rather becomes closer to the work port 56 side (the work port 56 is If it is formed on the left side of the part where the 23 is attached, it will be on the working port 56 side at all), and the work can be easily performed regardless of the formation position of the working port 56.

In addition, in the case of the above configuration, a fastener 51 for fastening the power cord 52 to the upper wall 23a of the main body frame 23 is provided near the wire entrance 47. As a result, the power cord 52 is provided near the wire entrance 47, so that the work of connecting to the quick connection terminal 40 can be performed quickly and easily. In addition, the product can be shipped with the power cord 52 mounted on the main body frame 23, and the risk of the power cord 52 being lost can be eliminated. Further, in a state where the power cord 52 is connected to the quick connection terminal 40, when an external force such as tension is applied to the power cord 52, the fastener 51 confirms that the external force reaches the connection portion with the quick connection terminal 40. It can be avoided and the connection state can be maintained well.

The line entrance 47 is directed to the side parallel to the ceiling 21. Thereby, the work of connecting and disconnecting the power cord 52 to and from the quick connection terminal 40 can be performed in the lateral direction, and even if the space above the ceiling for performing the work is vertically narrow, The work can be performed more easily. Accordingly, work such as inspection and repair of the connection portion can be performed more easily.

Further, the motor 25 includes a motor frame 35
Of the main frame 23 with the flange portions 33a and 34a
And mounted. Thereby, the attachment of the motor 25 to the main body frame 23 is performed by the flange portions 33a and 34a.
Accordingly, the motor 25 can be mounted in a state where it is prevented from falling, so that the motor 25 can be easily mounted without the need for support by the operator's hand. In addition, it is possible to prevent the motor 25 from being accidentally dropped when the motor 25 is attached or detached at the time of repair or the like, by the flange portions 33a and 34a, so that the operation can be performed safely.

7 and 8 show the second and third embodiments of the present invention.
1 is different from that of the first embodiment, and the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

[Second Embodiment] In a second embodiment shown in FIG. 7, a fastener 71 is inserted with one end 71a into a hole 72 formed in the upper wall 23a of the main body frame 23, and is inserted into an intermediate portion 71b. The other end 71c is fixed to the upper wall 23a of the main body frame 23 with the screw 73 while holding the front end of the power cord 52, and the same effect as described above can be applied to the fastening of the power cord 52. Can be obtained.

[Third Embodiment] In the third embodiment shown in FIG. 8, the fastener 81 is constituted by a pair of tongue pieces 81a and 81b cut and raised on the upper wall 23a of the main body frame 23. The distal end of the power supply cord 52 is press-fitted between the tongues 81a and 81b, and the distal end of the power supply cord 52 is held by the elastic force of the tongues 81a and 81b. Even in this case, the same operation and effect as described above can be obtained for the fastening of the power supply cord line 52.

It should be noted that the ventilation fan having the above-described configuration is
Is rotationally driven so that air in the room 60 (see FIG. 1) facing the main body frame 23 passes through the main body frame 23,
There is an exhaust type in which the air is exhausted from the exhaust port 30 to the outside through the duct 32. On the contrary, there is also an intake type in which outdoor air is introduced from the duct into the room through the main body frame. In the ventilation fan, the vent formed in the side wall of the main body frame serves as an intake port. The present invention is also applicable to this. In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications without departing from the scope of the invention.

[0041]

The present invention is as described above.
The following effects are obtained. According to the duct ventilation fan of the first aspect, the work at the time of assembling the product can be simplified, and the work of connecting the power cord wire to the quick connection terminal and the work of checking and repairing the connection portion are obstructed by the duct. It can be done easily without being forced to depend on the position of the working port.

According to the second aspect of the present invention, the operation of connecting the power cord to the quick connection terminal can be performed more quickly and easily, and the risk of loss of the power cord during shipment of the product can be eliminated. Further, it is possible to prevent the external force applied to the power cord line from reaching the connection portion between the power cord line and the quick connection terminal, and it is possible to maintain a good connection state between them.

According to the duct ventilation fan of the third aspect, the work of connecting and disconnecting the power cord to the quick connection terminal can be easily performed even in a narrow space above and below the ceiling.
Inspection, repair, and the like of the connection portion can be performed more easily. According to the duct ventilation fan of the fourth aspect, attachment of the motor to the main body frame can be easily performed without the need for support by an operator's hand. Further, the work of attaching and detaching the motor at the time of repair or the like can be performed safely without the motor being inadvertently dropped.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention in an entire mounted state.

FIG. 2 is an enlarged perspective view of a motor alone.

FIG. 3 is an enlarged vertical sectional view of a motor alone.

FIG. 4 is an enlarged perspective view of a circuit board on which a quick connection terminal and a capacitor are mounted.

FIG. 5 is an enlarged perspective view of a fastener portion.

FIG. 6 is a plan view of the entire installation state.

FIG. 7 is a view corresponding to FIG. 5, showing a second embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 5, showing a third embodiment of the present invention.

FIG. 9 is a diagram corresponding to FIG. 1 showing a conventional example.

FIG. 10 is a diagram corresponding to FIG. 1 showing a different conventional example.

[Explanation of symbols]

23 is a main frame, 23a is a main frame upper wall, 25 is a motor,
6 is a blower blade, 30 is an exhaust port (vent), 32 is a duct, 35 is a motor frame, 33a and 34a are flange portions, 40 is a quick connection terminal, 45 is a wire insertion port, 46 is a release button, and 47 is a wire. The entrance, 51 is a fastener, 52 is a power cord line, and 71 and 81 are fasteners.

Claims (4)

[Claims] 1. A main body frame having a ventilation port to which a duct is connected to a side wall, a motor mounted on the main body frame with a part of a motor frame protruding outward from an upper wall of the main body frame, A rotation-driven blower blade, and a quick-connecting terminal for connecting a power cord wire for supplying power to the motor is provided inside a portion protruding from an upper wall of the main body frame of the motor frame; A ventilating fan for a duct, wherein a wire entrance / exit for a terminal is formed in a portion of a portion protruding from an upper wall of a main body frame of the motor frame, the portion being located on a side opposite to a vent of the main body frame. 2. A ventilation fan for a duct according to claim 1, further comprising a fastener for fastening a power cord wire to an upper wall of the main body frame, which is located near a wire entrance of the motor frame. 3. The ventilation fan for a duct according to claim 1, wherein the wire entrance and exit of the motor frame are directed sideways. 4. The ventilation fan according to claim 1, wherein the motor has a flange portion on the motor frame, and the flange portion is mounted on the upper wall of the main frame.