JPH0638270Y2 - Ventilation fan for duct - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention is a ventilation fan for a duct that is inserted into the ceiling through an opening in a ceiling plate and is attached to the duct, which is connected to a duct arranged behind the ceiling to exchange air in a room. It is about.

2. Description of the Related Art In recent years, ventilation fans have been attached to the wall-mounted ventilation fans from the viewpoints of aesthetics, noise reduction, construction, etc., and the ventilation fan body is attached to the opening of the ceiling plate, and ventilation is performed through the duct installed behind the ceiling. The number of duct ventilation fans has increased.

Because of this, the conventional ventilation fan for this type of duct is
Although it is not possible to name a specific document, the structure is as shown in FIGS.

That is, the ventilation fan main body 104 having the blower casing 103 having the blower 101 and the electrical equipment box 102 built therein, the duct connection portion 105 connected to the ventilation duct, and the makeup grill 106 are provided, and the duct connection portion 105 is provided. Is disposed at a position corresponding to the discharge port 107 provided in the ventilation fan main body 104, and the makeup grill 106 is disposed so as to cover the suction port 108 provided in the lower portion of the ventilation fan main body 104. The electrical equipment box 102 has an opening 102a at the bottom, and the opening 102a
An insertion port 109 into which the electric wire 110 of the blower 101 is inserted is provided on the end face a, and a capacitor 111 connected to the electric wire 110 and a connection terminal 112 for power supply are accommodated inside, and an electric device is installed in the opening 102a. The box cover 113 was fixed so as to cover it.

Problems to be Solved by the Invention In such a conventional configuration, when the electrical box cover 113 is removed to connect the power source to the connection terminal 112, the electric wire 1
Since 10 was removed from the insertion port 109, the electric wire 110 had to be housed in the insertion port 109 again after connecting the power supply, and the electrical equipment box cover 113 had to be attached while pressing it with one hand. At this time, if the electric wire 110 is not properly stored in the insertion port 109, the electric wire 110 is caught between the electric component box 102 and the electric component box cover 113 and is damaged, or the electric component box cover 1
There is a problem that it may lead to an unsafe condition such as slipping out because 13 is not fixed properly.

An object of the present invention is to solve the above problems and to provide a ventilation fan for a duct that can easily and unsafely connect a power source without increasing the manufacturing cost.

Means for Solving the Problem In order to solve this problem, the present invention provides a box-shaped main body with a blower casing having a built-in blower, and an electric equipment box having a built-in connection terminal for a capacitor and a power supply. , The electrical equipment box has an opening on the lower surface, and an electrical equipment box cover for covering the opening is provided, and at the lower end portion of one side surface, an insertion opening for inserting a plurality of electric wires of a blower having a downward opening is provided. A ventilation fan for a duct is provided, which is provided with a claw that projects horizontally in the opening and forms a gap narrower than the outer diameter of the plurality of electric wires.

Operation With this configuration, even if the electrical equipment box is removed during the work of connecting the power source, the electric wire of the blower is held by the temporary fixing claw provided at the lower portion of the insertion port without being disengaged from the insertion port.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. In the figure, a main body 1 of a ventilation fan for a duct comprises a box body having a suction port 8 opened at a lower surface and a discharge port 6 opened at one side surface, and a blower casing 3 having a blower 2 built therein and an electrical equipment box. And 4 are provided. A capacitor 11 and a connection terminal 12 for power supply connection are housed in the electrical equipment box 4, and these capacitors 11 and connection terminals 12 are connected to a plurality of electric wires 10 derived from the blower 2, and these The plurality of electric wires 10 are collectively inserted in the protective tube. The electrical box cover 13 is fixed so as to cover the inside. A duct connecting portion 5 is provided on one side surface of the main body 1 for communicating the discharge port 6 with a ventilation duct (not shown), and a makeup grill 7 for covering the suction port 8 is provided on the lower surface.
These configurations are the same as those of conventional duct ventilation fans.

The features of the present invention are as follows. That is, the electrical equipment box 4 provided in the blower casing 3 has an opening 4a at the bottom.
The electric wire 10 of the blower 2 is inserted at the lower end of one side surface of the opening 4a on the side where the fan is attached, and the electric wire 10 of the blower 2 is inserted. At the lower opening of the mouth 9, the electric wire 10 that projects horizontally and forms a narrower gap than the outer diameter of the tube in which a plurality of electric wires are inserted is temporarily fixed by fixing the electric wire 10 from the narrow gap in front of the tip of the nail 14 to the nail 10. This can be achieved very simply by pushing the inside of the insertion opening 9 while elastically deforming. Alternatively, it can be achieved by flattening the plurality of electric wires 10 put together and inserting them from the narrow gap of the tip of the claw 14.

The work of connecting the power source in the duct ventilation fan having the above configuration will be described below.

First, the electrical box cover 13 is removed from the electrical box 4. The electric wire 10 of the blower 2 is a claw formed under the insertion opening 9.
It is held by 14 and does not come off from the insertion opening 9.
In this state, connect the power supply wire (not shown) to the connection terminal 12,
Insert into the insertion opening 9a. After that, the work is completed by fixing the electrical equipment box cover 13.

By the way, since the duct ventilation fan is installed behind the ceiling, the above-mentioned power supply connection work must be performed at the position of the ceiling surface, and when the ceiling is high, work on a stepladder etc. in a stable posture. Moreover, it is often the case that the electric wire 10 of the blower 2 is once taken out from the insertion port 9 and pulled down. At this time, take out the electric wire 10 by elastically deforming the claw 14 or by flattening the electric wire 10.
14 By pulling out from the narrow gap in front of the tip, it can be easily done even in high places such as near the ceiling surface, thus increasing the safety of the work.

Effect of the Invention As is apparent from the above description of the embodiments, according to the present invention, in the process of temporarily assembling the electric wire of the blower to the electrical equipment box in the process of assembling the product, the electric wire has a narrow opening below the insertion opening. All you have to do is push it in from the gap, and in the work of connecting the power supply, the electric wire will not come off from the insertion port of the electrical box even if you remove the electrical box cover, so the work of re-inserting is not necessary, improving workability, On the other hand, considering the safety of work in high places, when connecting the power supply by pulling the wire downward from the insertion port, you can freely pull out the wire from the insertion port and insert it after the connection work, and It can be performed very easily, improving workability and improving work safety in high places. In addition, since the claw is interposed between the electrical box cover and the electric wire so as to partition the both, the electric wire is caught between the electrical box cover and the lower end of the electrical box, and the electrical box is damaged. Since the cover is not properly fixed, it is possible to eliminate an unsafe condition such as displacement.

[Brief description of drawings]

FIG. 1 is a sectional view of a duct ventilation fan according to an embodiment of the present invention, FIG. 2 is a sectional view of an electric equipment box portion of the ventilation fan, FIG. 3 is a perspective view of an electric equipment box portion of the ventilation fan, and FIG. FIG. 5 is a sectional view of the duct ventilation fan, FIG. 5 is a sectional view of an electric equipment box portion of the ventilation fan, and FIG. 6 is a perspective view of an electric equipment box portion of the ventilation fan. 1 ... Main body, 2 ... Blower, 3 ... Blower casing, 4
…… Electrical equipment box, 9,9a …… Insertion port, 10 …… Wire, 11…
… Capacitor, 12… Connection terminal, 14… Claw.

Claims (1)

[Scope of utility model registration request] 1. A box-shaped main body which is inserted and installed in the back of the ceiling, and in which a blower casing having a built-in blower and an electric equipment box having a connection terminal for a capacitor and a power supply are arranged, and the electric equipment box has a bottom surface. Is provided with an electrical box cover that covers the opening, and at the lower end of one side face is provided an insertion port for inserting a plurality of electric wires of the blower that is opened downward, and projects horizontally in the lower opening of the insertion port. A duct ventilation fan comprising a claw that forms a gap narrower than the outer diameter of the plurality of electric wires and holds the electric wires in the insertion port in a removable manner.