JP2007093205A - Ventilation fan and attaching method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation fan capable of executing easily and quickly work when a facility business concerned has a qualification of an electrical engineer, capable of executing electric wiring work hereafter when the facility business concerned has no qualification of the electrical engineer, and capable of executing main body work with excellent workability when an electric work business concerned executes it. <P>SOLUTION: This ventilation fan is provided with the boxlike main body 1 with a fan 6 provided in its inside, a connection part 26 connected to an external electric power source 17, a connection terminal 14 connected electrically to the connection part 26, and having a lead connection part 28 connected electrically to the fan 6 by a motor lead wire 15, and a selection means for changing over the connection part 26 to position it in either of a main body outer part or a main body inner part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wiring work for an external power supply line of a duct ventilation fan.

Conventionally, this type of ventilation fan for a duct has been generally installed with a structure as shown in, for example, Japanese Utility Model Publication No. 60-170656. Hereinafter, this conventional duct ventilation fan will be described with reference to the drawings.
9 is a cross-sectional view showing a state of installation in a conventional duct ventilation fan, FIG. 10 is a front view of the duct ventilation fan shown in FIG. 9, and FIG. 11 shows a state of installation of the duct ventilation fan shown in FIG. FIG. 12 is a perspective view showing a state of a fan cover of the duct ventilation fan shown in FIG. 9, and FIG. 13 is a perspective view showing a state of the installation method of the duct ventilation fan shown in FIG.

  9 to 12, reference numeral 111 denotes a ventilation fan casing having a suction port 112 on the lower surface. In the ventilation fan casing 111, the flange portion 111 a of the opening edge is fixed to the field edge 113 a of the ceiling plate 113 with screws or the like. Reference numeral 114 denotes a motor installed on the top plate of the casing 111, and reference numeral 115 denotes a fan supported on a motor shaft 114 a hanging from the motor 114.

  Reference numeral 116 denotes a fan cover that covers the fan 115 and has an opening 116 a corresponding to the suction port 112. As shown in FIG. 12, reference numeral 117 denotes a support plate attached to the outer end of the recessed space 116b in the vicinity of the discharge port of the fan cover 116, and has a projection 117a on the surface. Reference numeral 118 denotes an L-shaped terminal mounting plate, which is provided with a power terminal plate 119. The terminal mounting plate 118 is positioned on the concave space 116b side, and the mounting piece 118a is connected to the protrusion 117a of the support plate 117. It is fixed with screws 120. Reference numeral 121 denotes a lead-out hole for a power supply line opened in the top plate of the casing 111.

  As shown in FIG. 13, the power line mounting operation of the present invention configured as described above is performed by first connecting the lead wire 126 from the motor 114 to the power terminal board 119 of the terminal mounting plate 118 and also connecting the power line 127. Thereafter, the terminal mounting plate 118 can be positioned in the recessed space 116b, and the screw 120 can be screwed onto the protrusion 117a of the support plate 117 from the hole of the mounting piece 118a.

  At this time, since the connection between the power supply terminal plate 119 and the power supply line 127 is an electric work, for example, when an equipment manufacturer not qualified for electric work installs a ventilation fan, the connection is not performed and the power supply line 127 is connected to the ventilation fan casing. Pull into 111 and install the body. Normally, the decorative grill 125 is not attached at this point due to the problem of dirt, but is done when the interior work is completed. At this point, an electrician qualified for electric work makes the above connection and makeup. The grill 125 may be attached.

  In addition, at the time of installation work of the main body, the power line 127 is wired, but in many cases, the power supply line 127 is not energized until the wiring work of other lighting fixtures is completed. The power line 127 may not be energized unless the interior work is completed. For this reason, when an interior work is completed, an electrician having a qualification for electrical work may connect the power terminal plate 119 and the power line 127 and attach the decorative grill 125, and then perform a trial run.

  Next, conventionally, another method for attaching the duct ventilation fan is generally configured as shown in, for example, Japanese Utility Model Publication No. 56-101524. Hereinafter, the configuration will be described with reference to FIGS. As shown in FIG. 14, reference numeral 201 denotes a rectangular box-shaped outer box whose bottom surface is open, and a flange portion 202 that is bent outward is provided at an opening edge portion thereof.

  Reference numeral 203 denotes a mounting opening provided to insert the outer box 201 into the ceiling 204, and a peripheral edge 205 for hitting the ceiling plate 204a is arranged at the periphery thereof. The outer box 201 is inserted into the mounting opening 203 from the indoor side, and the flange 202 is fixed to the field edge 205 by screws. Reference numeral 206 denotes a motor in which a ventilation fan 207 is directly connected to a rotary shaft 206a, which is fixed to a support plate 208 fixed by welding to the lower surface side of the upper surface plate 201a of the outer box 201 by screwing from below.

  Reference numeral 209 denotes a bell mouth in which an air inlet 210 corresponding to the fan 207 is formed, and this is fixed to a support plate 211 fixed to the inner side wall of the outer box 201 by welding from below. A first support plate 212 is fixed to a boss portion 209a provided on the bell mouth 209 by screwing. Reference numeral 213 denotes a second support plate that is fixed to the tip of the first support plate 212 with a thumbscrew 214 so as to be adjustable in the vertical direction.

  Reference numeral 215 denotes a decorative frame having a plurality of intake holes 215a. The decorative frame 215 is in contact with the lower surface of the ceiling plate 204a so as to cover the opening of the lower surface of the outer box 201. The decorative frame 215 is supported via a cap nut 216 on a screw portion 213 a provided on the lower surface portion of the second support plate 213. Reference numeral 217 denotes an opening formed in the upper part of one corner where the side plates 201b and 201c of the outer box 201 are adjacent.

  A support plate 218 having a mounting surface 218a parallel to the upper surface plate 201a is fixed to the lower edge of the opening 217 by, for example, welding, and a screw hole 218b is formed in the center of the mounting surface 218a. ing. A terminal attachment 219 has a mounting portion 219b bent at the lower end of the hanging plate portion 219a, and a plurality of tongue pieces 219c that contact the inner surface of the outer box 201 at the periphery of the hanging plate portion 219a and the mounting portion 219b. It is a mounting plate as a body.

  The mounting plate 219 is externally attached by a screw 220 inserted in a screw hole 218b from below through a screw insertion hole 219d provided in the mounting portion 219b with the upper surface of the mounting portion 219b abutting the lower surface of the mounting surface 218a. It is fixed in the box 201, and the opening 217 is closed by the mounting plate 219. Reference numeral 221 denotes a connection terminal as a connection terminal portion fixed to the hanging plate portion 219 a of the attachment plate 219 via the attachment tongue piece 222.

  A lead wire insertion hole 223 is provided in the hanging plate portion 219a so as to be positioned in the vicinity of the connection terminal 221. The lead wire 206b from the motor 206 passes through the bush 224 fitted in the lead wire insertion hole 223 and is connected to the connection terminal 221 in advance. Reference numeral 225 denotes a substantially triangular upper surface portion 225a and a cover plate as a cover body that includes a side plate portion 225b and a side plate portion 225c that hang downward from the upper surface portion 225a and are adjacent to each other at right angles.

  The two protrusions 225d protruding sideways from the side plate 225b are bent in a substantially U shape, and the protrusions 225d are rotatable in slots 226 and 226 provided in the side plate 201b. insert. Accordingly, the cover plate 225 covers the connection terminal 221 by closing the opening 217. Reference numeral 227 denotes an external power line wired on the back of the ceiling. One end of the external power line is connected to the connection terminal 221 and is electrically connected to the lead wire 206b from the motor 206.

  225e is a substantially U-shaped notch for leading out the external power supply line 227 when the cover plate 225 is closed. A cushion material 228 for protecting the external power supply line 227 is attached to the notch 225e. 229 is a screw insertion hole provided in the side plate portion 225c, and 230 is a screw hole provided in the side plate 201c so as to correspond to the screw insertion hole 229.

  Reference numeral 231 denotes a screw fixed to a screw hole 230 provided in the side plate 201c via a screw insertion hole 229 provided in the side plate portion 225c. Reference numeral 232 denotes an exhaust port provided in the side plate 201d of the outer box 201, to which an exhaust port body 233 having a shutter 233a is fixed. The other end portion of the exhaust pipe 234 connected to one end portion of the exhaust port body 233 is led to the outside through the back of the ceiling.

  Next, the operation of the duct ventilation fan shown in FIGS. 14 and 15 will be described. For example, when a ventilation fan is attached to a newly built house, the outer box 201 is fixed by screwing the flange portion 202 to the mounting opening 203 before the ceiling plate 204a is hit against the field edge 205. Next, the screw 231 is removed and the protrusion 225 d is rotated with the long hole 226 as a fulcrum, thereby opening the cover plate 225 and connecting the external power supply line 227 to the connection terminal 221.

  After the connection, the cover plate 225 is closed as it is, and the screw 231 is inserted into the screw hole 230 through the screw insertion hole 229. Next, the exhaust pipe 234 is connected to the exhaust port body 233 at the same time, and then the ceiling plate 204a is applied to the field edge 205. After the ceiling plate 204a is applied, the decorative frame 215 is attached via the cap nut 216. It is attached to the outer box 201 so as to cover the mounting opening 203.

  By the way, when the motor 206 fails, after removing the decorative frame 215, the bell mouth 209 is removed from the support plate 211 and taken out indoors. Next, the screw 220 is removed from the screw hole 218b, and the mounting plate 219 is pulled downward toward the indoor side. Then, the lead wire 206b of the motor 206 is removed from the connection terminal 221, and then the motor 206 is removed from the support plate 208 and taken out indoors.

  Thereafter, after a new motor 206 is fixed to the support plate 208, the lead wire 206b from the motor 206 is connected to the connection terminal 221 through the bushing 224, and the mounting plate 219 is connected to the indoor side with the screw 220. It is more firmly fixed to the support plate 218. Further, the bell mouth 209 and the decorative frame 215 are fixed to the support plate 211 and the second support plate 213 from the indoor side, respectively.

  Therefore, according to the mounting method of the ventilation fan as described above, even if it is necessary to disconnect the external power supply line 227 and the lead wire 206b of the motor 206 for repair / inspection, these operations are performed as described above. Can be performed from the indoor side, so there is no need for the operator to enter the back of the ceiling, and the work can be performed easily. Also, the work for removing and connecting the connecting portion with the external power supply line 227 can be performed from the indoor side.

  In this mounting example, both the installation work for installing the ventilation fan body and the exhaust pipe and the electrical work for performing electrical wiring exist. For example, there is no problem if the equipment supplier is qualified as an electrician and such a supplier installs it. However, for example, when an equipment contractor who is not qualified for electrical work performs the work, the electric work must be requested to the electric work contractor during the work.

  On the other hand, when an electrical contractor performs construction, it is necessary to request the construction work for installing the exhaust pipe, and it is difficult to clarify the responsibilities of the work of both. Also, in this installation example, the explanation of the grounding work is omitted, but when used in a bathroom, etc., grounding is always necessary, and there are cases where grounding is also used for purposes other than the bathroom. Many.

  Next, conventionally, another method for attaching the duct ventilation fan is generally configured as shown in, for example, Japanese Patent Application Laid-Open No. 9-89341. Hereinafter, the configuration will be described with reference to FIGS. This conventional ventilation fan for a duct has a box-shaped main body 301 that is inserted into an attachment opening 303 provided on a ceiling board 304a, has a lower surface opened, and has an exhaust port 318 formed on a side surface. This duct ventilation fan includes a blower 306 provided inside the main body 301 and a connecting portion 314 a for connecting an external power supply line 317 that is input to the blower 306.

  The duct ventilation fan includes a connection terminal 314 provided on the wiring board 316 and a top surface opening 301b through which the connection portion 314a of the connection terminal 314 is exposed on the top surface 301a of the main body 301. Further, the ventilation fan for duct exposes the connection part 314a of the connection terminal 314 incorporated in the main body 301 via the wiring board 316 from the suction side to the outside from the top surface opening part 301b, and connects the external power line 317. It is a configuration.

  Since the structure of the duct ventilation fan here is substantially the same as the structure of FIGS. 14 and 15 described above, only the electric wiring portion will be described below. The connection terminal 314 is provided for supplying power to the blower 306. The blower 306 and the connection terminal 314 are connected by a lead wire 315, and the connection terminal 314 is fixed to the wiring board 316 with a screw.

  The wiring board 316 is fixed to the bell mouth 308 with screws so that the connection portion 314a of the connection terminal 314 is exposed to the outside of the main body 301 from the top surface opening 301b provided on the top surface 301a of the main body 301. The external power supply line 317 is wired behind the ceiling, and one end of the external power supply line 317 is connected to the connection terminal 314 and is electrically connected to the lead wire 315.

  In the above configuration, for example, when a ventilation fan is attached to a newly built house, the main body 301 is secured by screwing the flange portion 302 to the mounting opening 303 before the ceiling plate 304a is hit against the field 305. To fix. Next, the external power supply line 317 is connected to the connection portion 314 a of the connection terminal 314, and the adapter 320 is connected to the duct 321. After that, the ceiling plate 304a is hit against the field edge 305, and the spring 313 is inserted into and supported by the decorative frame mounting bracket 311 after the ceiling plate 304a is hit, so that the decorative frame 312 covers the mounting opening 303. And mounted on the main body 301.

  When the blower 306 fails, the decorative frame 312 is removed, and then the bell mouth 308 and the decorative frame mounting bracket 311 are taken out from the support plate 310 to the indoor side. Next, after the wiring board 316 is drawn downward toward the indoor side, the lead wire 315 of the blower 306 is removed from the connection terminal 314, and then the blower 306 is removed from the top surface 301a of the main body 301 and taken out to the indoor side.

  Thereafter, a new blower 306 is fixed to the lower surface of the top surface 301 a of the main body 301, and then the lead wire 315 from the blower 306 is connected to the connection terminal 314 to connect the bell mouth 308 and the decorative frame mounting bracket 311 to the support plate 310. It sticks to. Then, the wiring board 316 is fixed to the bell mouth 308 from the indoor side, and the decorative frame 312 is inserted into and supported by the decorative frame mounting bracket 311 by the spring 313.

  As is clear from the above description, the work for removing and connecting the connection portion with the external power supply line 317 can be performed from the indoor side. In this manner, by incorporating the connection terminal 314 provided on the wiring board 316 into the main body 301, the connection portion 314a of the connection terminal 314 is exposed from the ceiling back through the top surface opening 301b formed on the top surface of the main body 301. It is composed. For this reason, since the external power supply line 317 can be connected by simply connecting the external power supply line 317, the connection work is facilitated.

  In this mounting example, it is possible to connect the external power supply line 317 easily and quickly compared to the conventional examples of FIGS. However, for example, if an equipment contractor is qualified as an electrician, and such a contractor installs it, there is no problem. As in the conventional example shown in FIGS. 14 and 15, it was necessary to request an electrician to perform an electric work in the middle of the work.

Japanese Utility Model Publication No. 60-170656

  In the conventional duct ventilation fan shown in FIGS. 9 to 13 described above, the connection between the power terminal plate 119 and the power line 127 is electrical work. For this reason, for example, when an equipment contractor who is not qualified for electrical work installs a ventilation fan, the equipment contractor does not connect the power supply terminal plate 119 and the power supply line 127 but draws the power supply line 127 into the ventilation fan casing 111. Install the main body.

  Then, when the interior work is completed, an electrician qualified for electrical work may connect the power terminal plate 119 and the power line 127 and attach the decorative grill 125, and then perform a trial run. However, when an equipment contractor qualified for electrical work performs the work, it is difficult to perform the wiring work because the electrical wiring is performed in a narrow space inside the main body, and the moisture-proof treatment of the quick-connection terminal part is also required, resulting in high manufacturing costs. There was a problem of becoming.

  Further, the conventional duct ventilation fan shown in FIGS. 14 and 15 has an advantage that the wiring work can be performed from the outside of the main body. In the conventional duct ventilation fan shown in FIGS. 16 and 17, the manufacturing cost can be reduced, and in the bathroom specification, the quick connection terminal portion can be prevented from being exposed to a high humidity atmosphere, and the coupling work can be easily performed. There are advantages.

  However, for example, if an equipment contractor is qualified as an electrician and installed by such a contractor, there is no problem. The electrician also needs to work during the work period. For example, there is a problem that not only it is necessary to adjust the work period of both of them, but also the power supply connection part cannot be checked from the inside of the main body, and the responsibility sharing is not clarified.

  The present invention solves the above-mentioned problems. For example, when an equipment contractor is qualified as an electrician, the construction work can be performed easily and quickly. The purpose is to provide a ventilation fan for ducts that can be done later when the electrical construction work is performed by the electrical contractor if it is not qualified, and that can be performed with good workability when the electrical contractor constructs the main body. .

  The ventilation fan according to the present invention includes a box-shaped main body in which a blower is provided, a connection portion that can be connected to an external power line, an electrical connection to the connection portion, and an electrical connection by a blower and a motor lead wire. And a selection means for switching the connection portion so that the connection portion is located either outside the main body or inside the main body.

  Further, the method for attaching the ventilation fan according to the present invention includes a step of drawing an external power supply line into a main body provided with a blower, a step of attaching the main body, a connection portion connectable to the external power supply line, a connection portion and an electric Terminal having a lead connection portion that is electrically connectable and electrically connected to the blower and the motor lead wire, and a selection means for switching so that the connection portion is located either outside or inside the main body And a step of connecting an external power supply line to a connecting portion located inside the main body.

  Also, the method of mounting the ventilating fan according to the present invention includes a connection part connectable with an external power line, an electrical connection with the connection part, and an electrical connection with a fan provided in the main body and a motor lead wire. Connecting an external power supply line to a connection portion located outside the main body in a connection terminal having a lead connection portion to be connected and a selection means for switching so that the connection portion is located either outside or inside the main body And a step of attaching the main body.

  The ventilation fan according to the present invention includes a box-shaped main body in which a blower is provided, a connection portion that can be connected to an external power line, an electrical connection to the connection portion, and an electrical connection by a blower and a motor lead wire. Since the connecting terminal having the lead connecting portion connected to the head and the selection means for switching the connecting portion to be located either outside the main body or inside the main body, the workability is improved.

  Further, the method for attaching the ventilation fan according to the present invention includes a step of drawing an external power supply line into a main body provided with a blower, a step of attaching the main body, a connection portion connectable to the external power supply line, a connection portion and an electric Terminal having a lead connection portion that is electrically connectable and electrically connected to the blower and the motor lead wire, and a selection means for switching so that the connection portion is located either outside or inside the main body And the step of connecting the external power supply line to the connecting portion located inside the main body, so that the burden of adjustment of the construction period accompanying the presence or absence of the qualified electrician can be reduced.

  Also, the method of mounting the ventilating fan according to the present invention includes a connection part connectable with an external power line, an electrical connection with the connection part, and an electrical connection with a fan provided in the main body and a motor lead wire. Connecting an external power supply line to a connection portion located outside the main body in a connection terminal having a lead connection portion to be connected and a selection means for switching so that the connection portion is located either outside or inside the main body And a step of attaching the main body, the connection between the external power supply line and the connection portion is facilitated.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a cross-sectional view showing a state of installation in the duct ventilation fan according to the first embodiment, FIG. 2 is a front view of the duct ventilation fan shown in FIG. 1, and FIG. 3 is an installation in the duct ventilation fan shown in FIG. FIG. 4 is a perspective view of the connection terminal according to the first embodiment.

  1 to 5, a duct ventilation fan is provided with a flange portion 2 bent outward at an opening edge of a rectangular box-shaped main body 1 having an open lower surface. The opening 3 for attaching the ventilation fan for the duct is provided so that the main body 1 can be inserted into the ceiling 4, and a field edge 5 for hitting the ceiling plate 4 a is arranged at the periphery. In the blower 6, an exhaust fan 7 is directly connected to a rotating shaft 6 a of the motor by a cap nut 10, and is fixed to the lower surface of the upper surface 1 a of the main body 1 by screws 13.

  The resin fan casing 8 forms a suction port 9 corresponding to the exhaust fan 7 and is fixed to the top surface 1a of the main body 1 with screws 16 from below. The decorative grill hook 11 is formed integrally with the fan casing 8, and the decorative grill 12 has an opening 12a through which air passes.

  The decorative grill 12 is disposed so that the peripheral edge portion 12b is in contact with the lower surface of the ceiling plate 4a so as to cover the opening of the lower surface of the main body 1. The decorative grill 12 is detachably hooked and fixed to the decorative grill hook 11 as shown in FIG. 16 by a spring provided on the decorative grill 12 (not shown).

  Further, the connection terminal 14 is an elongated quadrangular prism, and has an A connection portion 26 and a B connection portion 27 having a quick connection terminal function on two opposing surfaces in the longitudinal direction. A lead connection portion 28 for connecting the motor lead wire 15 is provided at an intermediate portion between the A connection portion 26 and the B connection portion 27 in the connection terminal 14. The lead connection portion 28 is electrically connected to the A connection portion 26 and the B connection portion 27.

  That is, the A connection portion 26 and the lead connection portion 28, the B connection portion 27 and the lead connection portion 28, and the A connection portion 26 and the B connection portion 27 are electrically connected. Further, a connection terminal fixing portion 29 for fixing the connection terminal 14 is provided between the A connection portion 26 and the B connection portion 27. An external electric wire partition wall 32 is provided on the side of the connection terminal 14 facing the main body 1.

  The connection terminal 14 is connected at the corner portion of the main body top surface 1 a so that the A connection portion 26 is exposed to the outside of the main body 1 from the top surface opening portion 1 b provided in the portion located on the tongue portion 8 a of the fan casing 8. It is fixed by a screw 30 at a terminal fixing portion 29. In this state, the B connection portion 27 faces the inner surface side of the main body 1, and the lead connection portion 28 also faces the inner surface side of the main body.

  In addition, the shape of the connection terminal fixing portion 29 may be a flange shape on the coupling surface of the top surface opening 1b and the connection terminal 14, or a packing material may be attached to the connection terminal fixing portion 29, thereby causing air leakage. It can be fixed so that there is no. Further, a power line hole 1c for drawing the external power line 17 into the main body 1 is provided in the vicinity of the top opening 1b.

  A rubber cord bush 31 for protecting the external power line 17 is attached to the power line hole 1c. In this state, the cord bush 31 side and the lead connection portion 28 side are partitioned by the connection terminal 14 inside the main body 1. Further, the external electric wire provided on the side surface of the connection terminal 14 is completely partitioned by the partition wall 32. The external power line 17 is wired behind the ceiling.

  In addition to the configuration of FIG. 4, the connection terminal 14 is configured to include a storage portion 33 for storing a capacitor for starting the capacitor motor on the lead connection portion 28 side of the connection terminal 14, for example, as shown in FIG. 5. May be.

  Next, electrical wiring work will be described. There are roughly two types of wiring methods. First, in the case of an equipment manufacturer mainly using the same attachment method as the conventional example shown in FIGS. 9 to 13, the external power line 17 is drawn into the main body 1 from the cord bush 31 and the main body is installed. At this time, the insertion of the external power supply line 17 into the main body can be easily performed by securing a space with the side surface of the main body by the external electric wire partition wall 32 provided on the side surface of the connection terminal 14.

  When the interior work is completed, an electrician qualified for electrical work connects the external power line 17 and the B connection portion 27 located inside the main body 1, then attaches the decorative grill 12, and then performs a test run. Just do it. In this example, the external power supply line 17 is indicated by a broken line in FIGS.

  Next, in the case where the electrical contractor or the equipment contractor is mainly qualified as an electrician by the same mounting method as the conventional example shown in FIGS. 14 and 15 and the conventional example shown in FIGS. Is connected to the A connection portion 26 provided so as to be exposed to the outside of the main body 1 before the ceiling plate 4a is hit against the field edge 5. Thereafter, if the same installation work as described above is performed, the connection between the external power supply line 17 and the A connection portion 26 can be easily and quickly performed as compared with the above. In this example, the external power supply line 17 is indicated by a solid line in FIGS.

  By the way, when the blower 6 breaks down, it can be performed by the same method as the conventional example shown in FIGS. After removing the decorative frame 12, the screw 30 fixing the connection terminal 14 is removed, and the connection terminal 14 is drawn downward toward the indoor side. Next, the motor lead wire 15 of the blower 6 is removed from the connection terminal 14, and then the blower 6 is detached from the top surface 1 a of the main body 1 and taken out indoors.

  Thereafter, a new blower 6 is fixed to the lower surface of the top surface 1a of the main body 1, and the motor lead wire 15 from the blower 6 is connected to the connection terminal 14 to fix the fan casing 8 to the main body top surface 1a. Finally, the decorative grill 12 may be attached.

  According to the above method, it is necessary to remove the screw 30 fixing the connection terminal 14 and to remove the connection terminal 14, but the lead connection part for connecting the motor lead wire also has a quick connection terminal function, and the cord bush 31 By disposing the connecting terminal 14 from the top surface 1a of the main body, the motor lead 15 can be detached and connected by the lead connecting portion release lever 28a without removing the connecting terminal 14 from the main body top surface 1a.

  Further, since the connection terminal fixing portion 29 is integrally formed in the connection terminal 14, the wiring board 316 as in the conventional example shown in FIGS. 16 and 17 is not necessary. Further, by providing the storage portion 33 for storing the capacitor for starting the capacitor motor on the lead connection portion side of the connection terminal 14, the electric wiring in the ventilation fan is completed only by coupling the blower 6 and the connection terminal 14. Then, the motor 13 and the electric wiring portion can be easily removed from the main body 1 portion by removing the screw 13 fixing the blower 6 and the screw 30 fixing the connection terminal 14 even during recycling.

  When the above construction is performed, the B connection portion 27 located in the main body 1 is not used. The connection B27 is exposed to a high humidity atmosphere when the ventilation fan is used in a bathroom. However, in such a method of use, when the interval between the two polarities of the B connection portion 27 is set large, for example, a thin rubber sheet is stuck and used, the rubber sheet is used as the tip of the external power line 17. It is sufficient to pass through and connect. Further, since the B connection portion 27 is energized during the operation of the ventilation fan, for example, when power is required for the ceiling surface due to reforming or the like, the B connection portion 27 can supply power.

Embodiment 2. FIG.
FIG. 6 is a partial cross-sectional view showing a state at the time of installation in the duct ventilation fan according to the second embodiment, FIG. 7 is a partial cross-sectional view showing a state at the time of installation in the duct ventilation fan according to the second embodiment, and FIG. It is a perspective view of the connection terminal by the form 2 of. The second embodiment of the present invention will be described below with reference to FIGS. Only differences from Embodiment 1 will be described.

  The B connection terminal 40 has a substantially semi-cylindrical shape, and has a lead connecting portion 28 for connecting the motor lead wire 15 on one of two side surfaces of the 1/4 cylindrical shape, which is a half of the cylindrical shape. The other side surface has an A connection portion 26. The lead connection portion 28 and the connection portion A26 are electrically connected. Further, a rotation fulcrum 41 is provided at the central axis portion of the cylinder of the B connection terminal 40.

  The B connection terminal 40 is configured so that the A connection portion 26 is exposed to the outside of the main body 1 from the top surface opening 1b provided at the corner portion of the main body top surface 1a and located at the tongue portion 8a of the fan casing 8. The rotation fulcrum 41 is fixed to the top surface 1a of the main body from the inside of the main body so as to be detachable by a fulcrum support 42 and rotatably by a screw 43 so as to be horizontal. In this state, the lead connection portion 28 faces the inner surface of the main body 1. Further, the top opening 1b can be closed at the outer portion of the B connection terminal 40 regardless of the rotational position.

  The operation will be described. FIG. 6 shows a case where an electrician or an equipment contractor is qualified as an electrician mainly by the same mounting method as the conventional example of FIGS. 14 and 15 and the conventional example of FIGS. First, the B connection terminal 40 is rotated and set so that the A connection portion 26 is exposed to the outside of the main body 1 from the top surface opening 1b.

  After the external power line 17 is connected to the A connection portion 26 provided so as to be exposed to the outside of the main body 1 before the ceiling plate 4a is hit against the field edge 5, the same installation work as described above is performed. The construction is performed in the same manner as in the first embodiment. Since the A connection part 26 is exposed from the top surface 1a of the main body, the connection between the external power line 17 and the A connection part 26 can be easily and quickly performed.

  FIG. 7 mainly shows the case of an equipment supplier by the same mounting method as the conventional example shown in FIGS. First, the B connection terminal 40 is rotated from the top surface opening 1b so that the A connection portion 26 is not exposed to the outside of the main body 1, that is, set so that the A connection portion 26 is located inside the main body. The wire 17 is drawn into the main body 1 from the cord bush 31 and the main body is installed. The construction is performed in the same manner as in the first embodiment.

  By the way, when the blower 6 breaks down, the lead connection part that connects the motor lead wire also has a quick connection terminal function as in the first embodiment, so that the connection terminal B40 is not removed from the main body top surface 1a. The motor lead 15 can be removed and connected by the lead connection part release lever 28a. 1, 3, 6, and 7 in this description, the A connection portion 26 is exposed on the back surface of the ceiling. For example, this portion is used to prevent dust and condensed water from adhering to the charging portion. Needless to say, it is desirable to cover with a cover or the like, but the description is omitted.

It is a cross-sectional view which shows the state at the time of installation in the ventilation fan for ducts by Embodiment 1 of this invention. It is a front view of the ventilation fan for ducts by Embodiment 1 of this invention. It is a fragmentary cross-sectional view which shows the state at the time of installation in the ventilation fan for ducts by Embodiment 1 of this invention. It is a perspective view of the connection terminal by Embodiment 1 of this invention. It is a perspective view of the connection terminal by Embodiment 1 of this invention. It is a partial cross-sectional view which shows the state at the time of installation in the ventilation fan for ducts by Embodiment 2 of this invention. It is a partial cross-sectional view which shows the state at the time of installation in the ventilation fan for ducts by Embodiment 2 of this invention. It is a perspective view of the connection terminal by Embodiment 2 of this invention. It is a cross-sectional view which shows the state at the time of installation in the conventional ventilation fan for ducts. It is a front view of the ventilation fan for ducts shown in FIG. It is a longitudinal cross-sectional view which shows the state of the ventilation fan for ducts shown in FIG. It is a perspective view which shows the state of the fan cover of the ventilation fan for ducts shown in FIG. It is a figure which shows the state of the installation method of the ventilation fan for ducts shown in FIG. It is a cross-sectional view which shows the state at the time of installation in the conventional ventilation fan for ducts. It is a perspective view which shows the state of the installation method of the ventilation fan for ducts shown in FIG. It is a cross-sectional view which shows the state at the time of installation in the conventional ventilation fan for ducts. It is a fragmentary perspective view which shows the state of the installation method of the ventilation fan for ducts shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Main body, 2 flange part, 3 mounting opening part, 4 ceiling, 5 edge, 6 air blower, 7 fan, 8 fan casing, 9 inlet, 10 cap nut, 11 decorative grill hook part, 12 decorative grille, 13 screw , 14 connection terminal, 15 motor lead wire, 16 screw, 17 external power supply line, 26 A connection portion, 27 B connection portion, 28 lead connection portion, 29 connection terminal fixing portion, 30 screw, 31 cord bush, 32 partition wall, 33 Condenser housing, 40 B connection terminal, 41 fulcrum support, 42 fulcrum support, 43 screws.

Claims (6)

A box-shaped main body provided with a blower inside;
A connection terminal that can be connected to an external power line, and a connection terminal that is electrically connectable to the connection part and has a lead connection part that is electrically connected to the blower and a motor lead wire;
A ventilating fan comprising: selection means for switching the connecting portion so as to be located either outside the main body or inside the main body. The ventilation fan according to claim 1, wherein the lead connection portion has a quick connection terminal function. The ventilating fan according to claim 1, wherein the connection terminal is provided in the corner portion where the tongue portion of the fan casing in which the blower is housed is located, in the corner portion of the top surface of the main body. The ventilating fan according to claim 1, wherein the connection terminal has an axis parallel to the top surface of the main body, and rotates about the axis so that the connection portion is located outside the main body and inside the main body. A step of drawing an external power line into a main body provided with a blower;
Attaching the body;
A connecting portion connectable to the external power supply line; a lead connecting portion electrically connectable to the connecting portion and electrically connected to the blower and a motor lead wire; and the connecting portion outside the main body Or connecting the external power supply line to the connection portion located inside the main body in a connection terminal having a selection means for switching so as to be located in any of the insides. A connecting portion connectable to an external power supply line; a lead connecting portion that is electrically connected to the connecting portion and is electrically connected to a blower provided in the main body and a motor lead wire; and the connecting portion Connecting the external power supply line to the connecting portion located outside the main body in a connection terminal having a selection means for switching to be located either outside or inside the main body;
A method of attaching a ventilation fan comprising: attaching the main body.

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