JP3243139B2 - Ceiling 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 ceiling fan having an electric box.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, a ventilating fan for a ceiling is provided with a blower 2 disposed inside a main body frame 1 and an electric component box 3 disposed therein. As shown in FIG. 14, the electrical component box 3
Electric components such as a capacitor 5 and a quick connection terminal (a structure that chucks and holds by simply inserting an electric wire and is also called an SL terminal) 6 necessary for a motor (generally an induction motor) 4 of the blower 2 are housed. An opening on the lower surface (the upper surface in the state of FIG. 14) of the electrical component box 3, which is a storage opening, is provided with a plastic lid 7 for closing the same.

[0003]

In the case of the above, the electric components housed in the electrical box 3 (in particular, the capacitor 5)
However, in the event of fire, it is conceivable that the outer shell of the plastic part melts and drops on the lid 7 of the electrical box 3 as shown by the area M surrounded by the two-dot chain line in FIG. In this case, the molten material is normally received by the lid 7 and does not fall, but if the lid 7 is melted, it is feared that the molten material falls and causes a burn or a fire.

[0004] In addition, when mounting work is performed, an electrical box 3 is required.
The lid 7 is opened, and a power supply wire (not shown) is inserted and connected to the quick connection terminal 6. At this time, the quick connection terminal 6 and the capacitor 5 are connected.
Since these may fall, the quick connection terminal 6 and the capacitor 5 are fixed by being screwed (not shown) while being housed in the electrical equipment box 3. Was troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a double safety structure capable of preventing a melt from dropping when an electric component housed in an electrical box ignites. And easy inspection required
It is an object of the present invention to provide a ceiling fan capable of cutting a ceiling and a ceiling fan capable of preventing a fall of an electric component when a cover of an electrical box is opened without requiring troublesome screws.

[0006]

Means for Solving the Problems In order to achieve the above object, in the ceiling fan of the present invention, first, a blower is arranged inside the main body frame, and other electric equipment including a quick connection terminal is provided. An electric box for storing parts is provided, and a non-combustible plate is attached to an inner surface of a plastic lid for closing an opening on a lower surface of the electric box.
Insert the inspection hole corresponding to the wire insertion port of the
It is characterized in that it is formed on the lid of the box and the non-combustible plate .
In this case, at least the size of one of the holes for inspection lid or non-combustible board of electric instrumentation box may define smaller than the diameter of the core wire of the power supply wire.

In the ceiling fan of the present invention, the second
In addition, a blower is arranged inside the main body frame, and an electric box for storing a plurality of other electric parts is arranged, and the electric box is formed by stacking the plurality of electric parts one above the other. It is formed so as to be housed, and two of the electric parts to be housed beneath are formed so as to have two housing parts which are substantially orthogonal to each other so that one having a different length can be selectively housed at an angle. In addition, a stopper is provided on the inner surface of the lid for closing the opening on the lower surface of the electrical component box, which stops the plurality of electrical components from falling when the lid is opened by locking the lower electrical component. It is characterized by the following.

In this case, in the case where the electrical box has a projection for forming one of the storage portions so as to face the space through which the power supply wire is inserted between the casing of the blower and the electrical box, It is preferable to form a slope on the part of the protruding part on the power source wire insertion source side. Further, the electrical component box preferably has a rib inside which serves to position one of the electric components to be housed below and to position the other electric components to be housed. Further, between the casing of the blower and the lid of the electrical box, a code box portion for storing an excess of lead wires connected to the motor of the blower may be formed.

[0009]

According to the first means, even if an electric component housed in the electrical box ignites and a molten material is dropped, the non-combustible plate attached to the inner surface of the lid receives the molten material and melts the lid. To prevent. Also, in that case, electrical components are quick connect terminal, by a hole for examination corresponding thereto inserting slot formed in the cover and non-combustible board of the electrical box, it is necessary inspections without opening the lid .

Further, in the case where the size of the inspection hole of at least one of the lid of the electrical box and the non-combustible plate is set smaller than the diameter of the core wire of the power supply wire, the core wire of the power supply wire is inserted without opening the cover. It is possible to prevent the power supply wires from being short-circuited due to moisture adhering to the surface of the lid during use in a bathroom.

According to the second means, on the other hand, the stopper provided on the lid of the electrical box can prevent the stored electrical components from dropping when the lid is opened, and can occupy a space in the horizontal direction of the electrical box. Can be reduced, and at the same time, component management of the electrical component box can be easily performed.

In this case, the electrical box has a projection for forming one of the storage portions so as to face a space through which a power supply wire is inserted between the casing of the blower and the electrical box. When the projecting portion is formed with a slope on the side of the power supply wire insertion source, the power supply wire can be inserted without being disturbed by the protrusion of the electrical box.

[0013] Further, in the case where the electric component box has a rib inside which serves to position one of the electric components to be housed below and also to position the other electric parts to be housed, the positioning can be performed by one rib. And, in the case of forming a code box portion for storing the surplus of the lead wire connected to the motor of the blower between the casing of the blower and the lid of the electrical box, the surplus of the lead wire protrudes and the installation work of the It is possible to prevent the fold from being cut or damaged.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, FIG. 2 shows the entire configuration of the ceiling fan, in which a main body frame 14 is mounted on a ceiling 12 of a room 11 via a wooden frame 13. Inside the main body frame 14, a blower 18 composed of a motor 15, a blower blade 16 rotated and driven by the motor 15, and a casing 17 surrounding the blower blade 16 is provided, and an electric equipment box 19 is provided. I have.

The electrical box 19 is made of plastic in detail, and has a capacitor 20 as shown in FIGS.
, The quick-connecting terminal 21 and the current fuse 22 are housed as electric components, and a lid 23 is formed integrally with the opening of the lower surface, which is a housing opening, by a self-hinge portion 24. .

The lid 23 has one stopper 25, two inspection holes 26, and two protrusions 27, which are slightly larger than the opening on the lower surface of the electrical box 19. On the non-combustible plate 28, a long hole 29 is formed at one position corresponding to the stopper 25, an inspection hole 30 is formed at two positions corresponding to the hole 26, and holes are formed at two positions corresponding to the projections 27. A long hole 29 is fitted in the stopper 25, a hole 30 is fitted in the hole 26, and the hole 31 is fitted in the projection 27, so that the non-combustible plate 28 is formed on the inner surface of the lid 23. Is installed. The non-combustible plate 28 is made of a non-combustible material such as mica, ceramic or metal. or,
The stopper 25 has a plate shape, but may have a boss shape.

In addition, the lid 23 is formed with a hook portion 32 and a mounting piece portion 34 having a mounting hole 33 near the hook portion 32. Are also formed. On the other hand, a projection 36 is formed on the edge of the electrical component box 19 opposite to the self-hinge portion 24, and the hook portion 32 is engaged with the projection 36 as shown in FIG. 23 is kept closed.

Here, the electrical box 19 has a capacitor housing 37 at the upper part and a quick connection terminal storage part 38 at the lower part, whereby the capacitor 20 and the quick connection terminal 21 are vertically connected. It is designed to be stacked and stored.
In addition, a current fuse accommodating portion 39 is provided on one side thereof, in which the current fuse 22 is accommodated.

As shown in FIG. 5, the quick-connecting terminal 21 has a first quick-connecting terminal having two two-pole electric wire insertion ports 40 used for a type in which the motor 16 is only turned on and off. There is a terminal 21a and a second quick-connecting terminal 21b having three wire insertion ports 41 for three poles used in a model in which the strength of the motor 16 is switched in addition to the on / off state. The length L2 of the second quick-connecting terminal 21b is greater than the length L1 of the first quick-connecting terminal 21a (L1 <L2), and the two quick-connecting terminals 21a and 21b having different lengths have different angles. The quick connection terminal storage section 38 is provided with two storage sections (a first quick connection terminal storage section 38a and a second quick connection terminal storage section 38b) substantially orthogonal to each other so as to be selectively housed by being changed by about 90 °. )have.

The electrical box 19 also has a lead wire lead-out portion 42 and a power supply wire lead-in portion 43 at the lower edge thereof.
A rib 44 for positioning the second quick connection terminal 21b, positioning the current fuse 22, and preventing bending of the current fuse 22 from the solder connection portion is formed therein. The electrical box 19 has projections 45 and 46 on both sides to form the first quick-connecting terminal housing 38a, and the projections located on the casing 17 side of the blower 18 in the mounted state. A slope portion 47 shown in FIG.

Further, with respect to the first quick-connecting terminal 21a stored in the first quick-connecting terminal storage portion 38a, the holes 26 and 30 of the lid 23 and the non-combustible plate 28 correspond to the electric wire insertion port 40. By inserting an inspection electric wire (pin) 48 shown in FIG. 6 and applying a current, it is possible to inspect whether the blower 28 moves or whether there is any abnormal sound from somewhere. In short, it is a hole for inspection, which is larger than the diameter of the inspection wire 48 (generally, 1.2 [mm]), and is a core wire 49a of the power supply wire 49 for normal use shown in FIG.
(In general, the diameter is 1.6 [mm] or 2.0 [mm] specified for general household use in the "extension rules" of the "Electrical Technology Regulations").

In addition, the casing 17 of the blower 18
As shown in FIG. 8, an attachment boss 50 is formed and an L-shaped rib 51 is formed on a portion of the outer lower surface where the electrical component box 19 is attached. 35, a code box portion 53 is formed between the casing 17 and the lid 23 for accommodating the surplus 52a of the lead wire 52 connected to the motor 15, as shown in FIGS. I have to.

By the way, in the case of the structure as described above,
In the electrical component box 19, the capacitor 20 is stored in the capacitor storage section 37, and the first quick connection terminal 21a or the second quick connection terminal 21b is stored in the quick connection terminal storage section 38, and the first quick connection terminal storage section is stored therein. 38a and the second quick connection terminal storage part 38b are selected and stored.
The current fuse 22 is housed. The lead wire 54 connected to these electric parts is housed in another space in the electrical box 19, and the lead wire 5 connected to the motor 15 is
2 is passed through the lead wire lead-out part 42. Then, the lid 23 is closed, the hook portion 32 is engaged with the projection 36, and the screw 55 (FIG. 9 and FIG.
0) is screwed into the mounting boss 50 and tightened, so that the electrical box 19 is mounted.

When the inspection is performed in this state, in the case of the model in which the first quick connection terminal 21a is housed in the electrical box 19, the inspection electric wire 48 is connected to each hole 26 of the lid 23 and the non-combustible plate 28, 30 and inserted into the wire insertion port 40 of the first quick-connecting terminal 21a to energize. To fold the installation work, the screw 55 is removed and the lid 23 is opened, and the space 5 between the casing 17 of the blower 18 and the electrical equipment box 19 from the cord bushing 56 (see FIG.
7, the core wire 49a of the power supply wire 49 is inserted into the wire insertion port 40 of the first quick-connecting terminal 21a or the second quick-connecting terminal 21b.
Into the electric wire insertion port 41 of FIG. And after that, the power supply wire 49 is passed through the power supply wire introduction part 43, the lid 23 is closed,
The hook 32 is engaged with the projection 36, and the mounting piece 3
The electrical box 19 is mounted by screwing the screw 55 passing through the mounting hole 33 of the No. 4 into the mounting boss 50 and tightening.

FIG. 1 shows a state of use after completion of the mounting work. The lid 23 closes an opening on the lower surface of the electrical box 19 containing the capacitor 20, the quick connection terminal 21 and the current fuse 22. A non-combustible plate 28 attached to the inner surface of the lid 23 is located below the electric components and covers the inner surface (upper surface) of the lid 23. Therefore, even if the electric components (especially the capacitor 20) ignite and the molten material such as the plastic case drops, the non-combustible plate 23 receives the molten material and prevents the lid 23 from melting. Is stopped on the non-combustible plate 23 to prevent further drop. Therefore, there is no fear of causing a burn or a fire of a person located below as in the conventional case, and a so-called double safety structure can be configured.

The lid 23 has a first quick connection terminal 21a.
The inspection hole 26 corresponding to the wire insertion port 40 is formed, and the inspection wire 48 is inserted into the wire insertion port 40 of the first quick-connecting terminal 21a from the hole 26 to thereby form the cover 2.
Since the necessary inspection can be performed without opening 3, the workability can be improved.

Further, in this case, the size of each inspection hole 26, 30 of the electrical box 19 and the non-combustible plate 28 is determined to be smaller than the diameter of the core wire 49a of the power supply wire 49. Can be prevented from being inserted without opening the core wire 49a of the power supply wire 49.
In particular, when the room 11 is a bathroom, water W as shown in FIG.
Touching the nine core wires 49a may cause a short circuit between the core wires 49a of the power supply wires 49. Further, if the exposed length of the core wire 49a is too large because the power supply wire 49 is peeled off too much, the core wire 49a remains exposed outside the lid 23, which may be touched by a person and cause electric shock.

On the other hand, in the case of this configuration, the lid 2
3 before opening the wire insertion port 40 of the first quick-connecting terminal 21a and the wire insertion port 41 of the second quick-connecting terminal 21b.
Cannot insert the core wire 49a of the power supply wire 49, and if the cover 23 is closed after the insertion, the core wire 49a of the power supply wire 49 will not be exposed outside the cover 23, thereby preventing the occurrence of accidents such as the above short circuit and electric shock. be able to. It is sufficient that at least one of the inspection holes 26 and 30 is determined to be smaller than the diameter of the core wire 49 a of the power supply wire 49.

On the other hand, the electrical component box 19
A plurality of electrical components such as 0 and quick-connecting terminal 21 are stacked one on top of the other.
The two storage portions (a first quick connection terminal storage portion 38a, a second quick connection terminal storage portion 38a, and a second quick connection terminal Terminal housings 38b), and a stopper 25 is provided on the inner surface of the lid 23.

The stopper 25 corresponds to the intersection of the first quick-connecting terminal housing 38a and the second quick-connecting terminal housing 38b. When the lid 23 is opened, as shown in FIG. , The first quick-connecting terminal 21a or the second quick-connecting terminal 21
b to prevent the upper capacitor 20 from dropping.
Of the core wire 49a of the first quick-connecting terminal 21a.
Alternatively, the first quick-connecting terminal 21a or the second quick-connecting terminal 21b and the capacitor 20 may drop even when the lid 23 is opened so as to be inserted into the wire insertion opening 41 of the second quick-connecting terminal 21b. And the stopper 2 provided on the lid 23
It is possible to improve the assemblability because it can be made up of five pieces and does not require a troublesome operation such as screwing of a conventional one.

In addition, in this case, the electrical box 19
By storing the capacitor 20 and the first quick-connecting terminal 21a or the second quick-connecting terminal 21b one above the other, the space occupied in the lateral direction can be reduced, and the size of the non-combustible plate 23 can be reduced. Can be. In addition, the first electrical connection box 19 has a first quick-connecting terminal housing which is substantially orthogonal so that the first quick-connecting terminal 21a and the second quick-connecting terminal 21b having different lengths can be selectively housed at different angles. By having the portion 38a and the second quick-connecting terminal storage portion 38b, one type of electrical equipment box 19 can support both of the quick-connecting terminals 21a and 21b, and component management can be facilitated. In addition, as shown in FIG. 1, the stopper 25 effectively functions as a descent stop for the first quick-connecting terminal 21 a or the second quick-connecting terminal 21 b in the electrical component box 19.

The projecting portion 45 for forming the first quick-connecting terminal accommodating portion 38a of the electrical component box 19 is provided in a space where the power supply wire 49 is inserted between the casing 17 of the blower 18 and the electrical component box 19. 57, and a slope portion 47 is formed on the upper surface portion, which is a portion on the power source wire insertion source side thereof, so that the insertion of the power source wire 49 is performed by sliding the slope portion 47 to project. 45 can be performed smoothly without being disturbed.

Further, the electrical component box 19 has a rib 44 therein for both positioning of the second quick-connecting terminal 21b and positioning of the current fuse 22, and both of the positioning can be performed by one rib 44. There is no need to provide dedicated ribs in the box 19, and the internal configuration of the electrical box 19 can be simplified, and the mold can be simplified.

Then, between the casing 17 of the blower 18 and the lid 23 of the electrical box 19, a code box portion 53 for storing the surplus 52a of the lead wire 52 connected to the motor 16 of the blower 17 is formed. As a result, the excess 52a of the lead wire 52 can be prevented from protruding, so that the main body frame 14 is attached to the upper surface of the ceiling 12 as shown by a cutting portion 58 in FIG.
Can be prevented from being cut or damaged up to the surplus 52a of the lead wire 52 when cutting with the blade in accordance with the body frame 14.

In addition, the following effects are exhibited particularly in the above configuration. The attachment of the non-combustible plate 28 to the lid 23 is performed by
The non-combustible plate 28 can be mounted by a simple operation.

Since the lid 23 is held in the closed state by the engagement of the hook portion 32 provided on the lid 23 with the projection 36 provided on the electrical equipment box 19, the lid 23 can be easily held. Until the electrical component box 19 is completely attached to the casing 17, the internal storage items can be prevented from falling off. Therefore, the electrical component box 19 can be easily attached without worrying about the internal storage items falling off.

Since the mounting piece 34 is formed near the hook 32 of the lid 23, the hook 23 is disengaged from the projection 36 by pulling the lid 23 with the mounting piece 34. 23 can be easily opened.

[0038]

The ceiling ventilation fan of the present invention is as described above, and has the following effects. First, in a case where a blower is disposed inside a main body frame and an electric box for housing other electric parts including quick-connecting terminals is disposed, a plastic material for closing an opening on a lower surface of the electric box is provided. Attach a non-combustible plate to the inner surface of the lid of
Insert the inspection hole corresponding to the wire insertion port of the
By forming it on the box lid and the non-combustible plate, it is possible to prevent the melt from falling when the electric components housed in the electrical box ignite, and to eliminate the danger of burns and fire of persons located below. And the necessary inspections cover the lid
Easy to do without opening .

[0039] Second, by defining smaller than the diameter of the core wire of the power supply wire the magnitude of at least one of the inspection hole of the lid or non-combustible plates above SL electric instrumentation boxes, power without opening the cover It is possible to prevent the core wire of the electric wire from being inserted and connected, and it is possible to prevent occurrence of accidents such as short circuit and electric shock.

Third , a blower is provided inside the main body frame, and an electrical box for storing a plurality of other electrical components is provided. A configuration in which two electric parts to be accommodated below which have different lengths have two storage parts which are substantially orthogonal to each other so that they can be selectively accommodated at different angles. And a stopper for preventing the plurality of electric components from dropping when the cover is opened by locking the lower one of the plurality of electric components on the inner surface of the lid for closing the opening at the lower surface of the electrical component box. With this arrangement, it is possible to prevent the stored electric parts from falling when the lid is opened with one stopper provided on the lid of the electrical box, and in addition to reducing the occupied space in the horizontal direction of the electrical box, The parts management of instrumentation box can be readily made.

Fourth , the electric box has a projection for forming one of the storage portions so as to face a space through which a power supply wire is inserted between a casing of the blower and the electric box. By forming the slope portion at the portion of the protruding portion on the power source wire insertion source side, it is possible to smoothly insert the power wire without being disturbed by the protruding portion of the electrical box.

Fifth , the electrical box is provided with a rib inside which serves to position one of the electric components to be housed below and also to position the other electric parts to be housed. Made of two ribs,
The internal configuration of the electrical box can be made simple.

Sixth , a cord box portion for storing an excess of the lead wire connected to the motor of the blower is formed between the casing of the blower and the lid of the electrical box. It is possible to prevent the excess portion from protruding and being cut or damaged at the time of the installation work.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of an electrical component box portion according to one embodiment of the present invention, taken along line AA of FIG. 5;

FIG. 2 is an overall vertical sectional view.

FIG. 3 is a perspective view of an electric component box in a state where a lid is opened.

FIG. 4 is a perspective view of the electrical component box in a closed state.

FIG. 5 is a bottom view of the electrical component box part.

FIG. 6 is a cutaway front view of the electrical component box at the inspection stage.

FIG. 7 is a cutaway front view of the electrical component box at a power connection stage.

FIG. 8 is a perspective view of an electric component box and a mounting portion thereof.

FIG. 9 is a perspective view of an electric component box and a mounting portion thereof in a state where the electric component box is attached.

FIG. 10 is an overall bottom view.

FIG. 11 is a vertical cross-sectional view of a power supply box and a mounting portion thereof at a power connection stage.

FIG. 12 is a perspective view of a ventilation fan mounting portion at a construction stage.

FIG. 13 is a diagram corresponding to FIG. 2 showing a conventional example.

FIG. 14 is a perspective view of an electrical component box part.

[Explanation of symbols]

14 is a main body frame, 17 is a casing, 18 is a blower, 19
Is an electrical box, 20 is a capacitor (electric part), 21
Is a quick-connecting terminal (electrical component), 21a is a first quick-connecting terminal (electrical component), 21b is a second quick-connecting terminal (electrical component), 22
Is a current fuse (electrical component), 23 is a lid, 25 is a stopper, 26 is an inspection hole, 28 is a non-combustible plate, 38 is a quick connection terminal storage portion, 38a is a first quick connection terminal storage portion, and 38b is a second connection terminal storage portion. 2
, Quick-connect terminal storage section, 44 is a rib, 45 is a protruding section, 47 is a slope section, 48 is an inspection wire, 49 is a power supply wire, 49a
Is a core wire, 51 is a rib, 52 is a lead wire, 52a is an excess, 53 is a code box portion, and 57 is a space between the casing of the blower and the electrical box.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-12367 (JP, A) JP-A 61-93719 (JP, U) JP-A 61-101341 (JP, U) 100745 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 7/10 101

Claims (6)

(57) [Claims] 1. A plastic device in which a blower is provided inside a main body frame and an electrical box for housing other electrical components including quick-connecting terminals is provided , wherein an opening on a lower surface of the electrical box is closed. Attach a non-combustible plate to the inner surface of the lid made of
A ventilation fan for a ceiling , wherein a hole for inspection is formed in a lid and a non-combustible plate of the electrical component box . 2. An electric box having a small lid or non-combustible plate.
At least one of the inspection holes should be
2. The ceiling fan according to claim 1 , wherein the diameter is smaller than the diameter of the core wire . 3. A blower is provided inside the main body frame.
, An electrical box for storing multiple other electrical components
The electrical box is connected to the plurality of
When the electrical components are formed so as to be stored
In addition, the length of the electrical components housed below
Two different things can be stored at different angles
Formed in a form having two storage sections which are substantially orthogonal to each other, and
The inside of the lid that closes the opening on the bottom of the electrical box
The surface portion is adapted to prevent the plurality of electric components from dropping when the lid is opened.
A stopper is provided to lock and block the electrical components below
Ceiling ventilators you characterized in that it was. 4. An electric component box forms one of the storage portions.
The projections for the blower casing and electrical box
Between the power cables
Then, form a slope on the part of this projection on the side from which the power cable is inserted.
Ceiling ventilators according to claim 3, wherein the form has. 5. An electric unit in which an electric component box is housed below.
Positioning of one of the items and the position of other stored electrical components
The ceiling fan according to claim 3 , further comprising a rib serving also as an arrangement. 6. A casing of a blower and a lid of an electrical box.
Between the excess lead wire connected to the blower motor
The ventilation fan for a ceiling according to claim 1 or 3, wherein a code box portion for accommodating is provided.