JP6983337B2 - Ceiling fan - Google Patents

Description

The present invention relates to a ceiling fan suspended from the ceiling and installed.

The ceiling fan is hung from the ceiling of the room to get a cool feeling by being exposed to the wind sent from the ceiling, to improve the air conditioning efficiency by stirring the room air, or to decorate the room. Patent Document 1 covers a pipe portion fixed to the ceiling with the axial direction being vertical, a motor portion suspended from the pipe portion, a rotary blade rotationally driven by the motor portion, and an upper surface of the motor portion. A ceiling fan with a conical cover portion arranged around a pipe portion is disclosed.

Generally, in a ceiling fan, the upper part of the pipe portion in which the motor portion is suspended and the cover portion is arranged around the motor portion is fixed to the ceiling. After that, the rotor blades are attached to the motor unit.

In the ceiling fan disclosed in Patent Document 1, the motor portion and the rotary blade are screwed to each other on the outer peripheral portion of the upper surface of the motor portion. Therefore, in the ceiling fan disclosed in Patent Document 1, the screw fastening work of the rotary blade to the motor portion is easy.

Japanese Unexamined Patent Publication No. 2018-91257

However, in the ceiling fan disclosed in Patent Document 1, since the motor portion and the rotary blade are screw-fastened on the outer peripheral portion of the upper surface of the motor portion, the screw head fastening the rotary blade is visually visible. The design is impaired because it can be done.

On the other hand, it is conceivable that the screw fastening portion between the motor portion and the rotary blade is covered with the cover portion so that the screw head fastening the rotary blade cannot be visually recognized. However, depending on the installation environment of the ceiling fan or the specifications of the ceiling fan, for example, the length of the pipe portion may be short and the distance between the top surface of the cover portion and the ceiling may be short. Since the length of the pipe part is short, even if the cover part is lifted from the upper surface of the motor part, there is a gap between the upper surface of the motor part and the cover part, which is necessary for screw fastening work between the motor part and the rotary blade using a driver. If it cannot be secured, it becomes difficult to float the cover portion, work such as deforming the cover portion and removing the cover portion is required, and the workability of the ceiling fan is deteriorated. Further, when the cover portion is configured to surround the pipe portion with a plurality of parts, the number of parts increases, which makes it difficult to manage the removed parts. Further, such a problem may occur at the time of maintenance and inspection after the installation of the ceiling fan.

The present invention has been made in view of the above, and an object of the present invention is to obtain a ceiling fan that is suspended from the ceiling and has good workability, maintenance and inspection, and is rich in design. do.

In order to solve the above-mentioned problems and achieve the object, the ceiling fan according to the present invention has a cylindrical pipe portion that can be attached to the ceiling with the axial direction being vertical, and a pipe portion with respect to the pipe portion. It is provided with a shaft portion fixed to the side opposite to the ceiling in the axial direction of the above, and a motor portion fixed to the shaft portion on the opposite side of the pipe portion in the axial direction of the pipe portion. Further, the ceiling fan has a rotary wing whose one end side is screwed to a fastening portion provided on the outer peripheral edge of the surface on the ceiling side in the axial direction of the pipe portion in the motor portion and is rotationally driven, and the axial direction of the pipe portion. The cover portion is provided with a cover portion through which the pipe portion is inserted and fixed to the pipe portion on the ceiling side of the motor portion. Cover portion, a pipe portion insertion hole of the long hole shape pipe section is inserted is provided on the upper end face, is fixed in a direction perpendicular to the axial direction of the pipe section to the pipe section by means of screws, not covering the fastening portion, A hole for fixing the cover portion is formed on the side surface so that the hole axial direction is orthogonal to the axial direction of the pipe portion and the screw is fixed. The longitudinal direction of the pipe portion insertion hole is the direction parallel to the hole axis direction.

The ceiling fan according to the present invention has an effect that, in a ceiling fan suspended from the ceiling and installed, a ceiling fan having good workability and maintenance and inspection after construction, and having a rich design can be obtained.

Perspective view of the main part of the ceiling fan according to the first embodiment of the present invention. A perspective view of a main part showing a peripheral part of a motor part in the ceiling fan shown in FIG. A perspective view showing a cover portion of the ceiling fan shown in FIG. Cross-sectional view of a main part showing a screw fastening hole of a pipe part in the ceiling fan shown in FIG. An exploded perspective view showing a state in which the pipe portion is inserted into the cover portion in the ceiling fan shown in FIG. An exploded perspective view showing a state in which the cover portion into which the pipe portion is inserted is tilted in the ceiling fan shown in FIG. Perspective view which shows the cover part which concerns on Embodiment 2 of this invention.

Hereinafter, the ceiling fan according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a perspective view of a main part of the ceiling fan 1 according to the first embodiment of the present invention. In FIG. 1, a part is cut out to show an internal part. FIG. 2 is a perspective view of a main part showing a peripheral part of a motor part 4 in the ceiling fan 1 shown in FIG. FIG. 3 is a perspective view showing a cover portion 7 in the ceiling fan 1 shown in FIG. FIG. 4 is a cross-sectional view of a main part showing a screw fastening hole 22 of the pipe part 2 in the ceiling fan 1 shown in FIG. FIG. 5 is an exploded perspective view showing a state in which the pipe portion 2 is inserted into the cover portion 7 in the ceiling fan 1 shown in FIG. FIG. 6 is an exploded perspective view showing a state in which the cover portion 7 into which the pipe portion 2 is inserted is tilted in the ceiling fan 1 shown in FIG. The vertical direction in the following is the vertical direction when the ceiling fan 1 is installed. Further, the horizontal direction in the following is the horizontal direction when the ceiling fan 1 is installed.

The ceiling fan 1 according to the first embodiment has a tubular pipe portion 2 that can be mounted on the ceiling with the axial direction being vertical, and a ceiling mounting hanger provided on the ceiling side in the axial direction of the pipe portion 2. A portion 10 and a shaft portion 3 fixed to the pipe portion 2 on the opposite side of the pipe portion 2 from the ceiling in the axial direction, and a shaft portion 3 on the side opposite to the pipe portion 2 in the axial direction of the pipe portion 2. The motor unit 4 which is a fixed power source, the rotary blade 5 whose one end side is screwed to the outer peripheral edge of the surface on the ceiling side in the axial direction of the pipe unit 2 in the motor unit 4 and driven to rotate, and the motor unit. The cover holding portion 6 through which the pipe portion 2 is inserted and fixed to the connecting portion on the ceiling side of the pipe portion 4 and the pipe portion 2 inserted through the pipe portion 2 on the ceiling side of the motor portion 4 in the axial direction of the pipe portion 2 are inserted. A cover portion 7 fixed to 2 and covering the outer peripheral edge portion of the motor portion 4 and a hanger cover portion 8 into which the pipe portion 2 is inserted and fixed so as to hide the ceiling mounting hanger portion 10 are provided.

The pipe portion 2 has a cylindrical shape, and is arranged so that the central axis extends in the vertical direction when the ceiling fan 1 is installed, that is, the axial direction of the central axis is the vertical direction when the ceiling fan 1 is installed. On the ceiling side of the pipe portion 2 in the axial direction of the central axis, a ceiling mounting hanger portion 10 that is hooked on a hook attached to the ceiling is provided. The ceiling fan 1 is installed on the ceiling by attaching the ceiling mounting hanger portion 10 to a hook having a J shape or a U shape previously provided on the ceiling. The hook mounting portion 10a of the ceiling mounting hanger portion 10 is covered with the hanger cover portion 8.

Further, the pipe portion 2 is provided with a wiring outlet 11 which is a hole penetrating in the horizontal direction on the side opposite to the ceiling. That is, the pipe portion 2 is arranged so that the axial direction of the central axis of the wiring outlet 11 is horizontal when the ceiling fan 1 is installed. A cover holding portion 6 is fixed above the wiring outlet 11 in the pipe portion 2 by screwing.

Further, below the wiring outlet 11 in the pipe portion 2, a pair of through holes that are orthogonal to the axial direction of the central axis of the wiring outlet 11 and penetrate in the horizontal direction when viewed from the axial direction of the central axis of the pipe portion 2. It is provided with a shaft portion connecting hole (not shown) for connecting the shaft portion 3. Further, as shown in FIG. 4, the pipe portion 2 is provided with a screw fastening hole 22 used for screw connection with the cover portion 7. The screw fastening hole 22 is provided on the outer peripheral surface at a position corresponding to the cover portion fixing hole 14 of the cover portion 7, which will be described later, in the axial direction of the central axis of the pipe portion 2.

The shaft portion 3 is fixed to the pipe portion 2 with the axial direction of the central axis being the vertical direction. A hole for connecting a pipe portion (not shown), which is a hole penetrating in the horizontal direction, is provided in the upper portion of the shaft portion 3. An electric component holding base 9 capable of holding an electric component such as a phase-advancing capacitor 12 is mounted on the upper portion of the shaft portion 3 while avoiding a hole for connecting the pipe portion.

The shaft portion 3 and the pipe portion 2 are fixed by bolts and nuts. That is, the shaft portion 3 and the pipe portion 2 have a shaft portion connecting hole and a pipe portion connecting hole of the shaft portion 3 provided in the pipe portion 2 with the upper portion of the shaft portion 3 inserted in the lower portion of the pipe portion 2. A connecting bolt is inserted into the connecting hole of the pipe portion 2 and the connecting hole of the shaft portion 3 in a state where the pipe portion 2 communicates with the pipe portion 2, and is fixed by fixing with a nut. The central axis of the shaft portion 3 and the central axis of the pipe portion 2 are arranged coaxially.

A motor unit 4 which is an electric motor for driving the rotary blade 5 is fixed to the lower end of the shaft unit 3. The motor portion 4 is arranged on the side opposite to the ceiling in the axial direction of the central axis of the pipe portion 2, that is, below the vertical direction of the pipe portion 2. The motor unit 4 has a circular shape when viewed from above. The rotation shaft of the motor portion 4 and the central shaft of the shaft portion 3 are arranged coaxially. The power line (not shown) of the motor unit 4 is drawn into the back of the ceiling through the hollow portion in the pipe unit 2 and connected to the power supply (not shown).

The rotary blades 5 are radially arranged at equal intervals on the outer periphery of the motor unit 4. The rotary blade 5 is screwed to the upper surface 4a of the motor portion 4, that is, the rotary blade fixing hole 20 provided on the surface on the ceiling direction side by a screw 21, so that the outer peripheral edge portion of the upper surface 4a of the motor portion 4 is fastened. One end side is fixed to. The rotor blade fixing hole 20 is a fastening portion where the rotor blade 5 is screwed and fastened by the screw 21, and is covered by the cover portion 7. The upper surface 4a of the motor unit 4 is a surface parallel to the horizontal direction when the ceiling fan 1 is installed. The rotor blade fixing hole 20 is provided in a region on the outer peripheral side of the motor portion 4 in the radial direction on the upper surface 4a of the motor portion 4.

The ceiling fan 1 blows air from the ceiling side to the floor surface or from the floor surface side to the ceiling by rotationally driving the rotary blade 5. In the first embodiment, the case where three rotary blades 5 are provided is shown, but the number of rotary blades 5 is not limited. The number of rotary blades 5 included in the ceiling fan 1 may be, for example, four.

The outer peripheral side of the motor portion 4 and the pipe portion 2 is covered with a cover portion 7 that bears the design of the ceiling fan 1. The cover portion 7 has a hollow conical shape in which the opening area increases from the upper end to the lower end. Further, the outer shape of the cover portion 7 has a shape rich in design, in which the outer surface expands from the upper end to the lower end in the radial direction of the truncated cone shape and is continuous with the outer shape of the motor portion 4. More specifically, the cover portion 7 has a hollow truncated cone shape in which the opening area increases from the upper end to the lower end. The central axis of the cover portion 7 and the central axis of the pipe portion 2 are arranged coaxially.

The cover portion 7 is provided with a pipe portion insertion hole 15a, which is a through hole for inserting the pipe portion 2, in the upper end surface portion 7a. The pipe portion insertion hole 15a has an elongated hole shape that penetrates the upper end surface portion 7a in the upper end surface portion 7a of the cover portion 7 in the thickness direction. The position of the pipe portion insertion hole 15a is such that the pipe portion 2 is inserted into the pipe portion insertion hole 15a in a state where the central axis of the cover portion 7 and the central axis of the pipe portion 2 are coaxial with each other in the upper end surface portion 7a of the cover portion 7. It is considered to be a possible position.

The cover portion 7 is provided with a cover protrusion 13 on the upper portion of the hollow portion of the cover portion 7, which is the back side of the design surface 7b which is the outer surface of the cover portion 7 and the back side of the upper end surface portion 7a of the cover portion 7. ing. The cover protrusion 13 positions the cover portion 7 in the vertical direction. The cover portion 7 is positioned in the vertical direction by inserting the pipe portion 2 through the pipe portion insertion hole 15a and contacting the cover protrusion portion 13 with the cover holding portion 6.

The side surface of the upper portion of the cover portion 7 is provided in a direction in which the hole axis direction is orthogonal to the axial direction of the central axis of the pipe portion 2, and the cover portion 7 is screwed to the pipe portion 2 using screws 23. A cover portion fixing hole 14, which is a screw hole used for the purpose, is formed. That is, the hole axis direction of the cover portion fixing hole 14 is horizontal when the ceiling fan 1 is installed.

A groove portion 7c for passing a screw when screwing the cover portion 7 to the pipe portion 2 is provided at a corner portion on the outer peripheral side of the upper end surface portion 7a and the design surface 7b of the cover portion 7. The groove portion 7c is provided from the upper end surface portion 7a side toward the central axis side of the cover portion 7 in the radial direction of the truncated cone shape. At the end of the groove portion 7c on the central axis side, an upper end surface portion 7a and a groove inner side surface 7d connected to the design surface 7b are provided along the vertical direction. That is, the end portion of the groove portion 7c on the central axis side of the cover portion 7 is closed.

The cover portion fixing hole 14 is provided on the groove inner side surface 7d so as to penetrate the groove inner side surface 7d in the thickness direction. Therefore, the hole axial direction of the cover portion fixing hole 14 is parallel to the thickness direction of the groove inner side surface 7d and parallel to the horizontal direction.

Then, the cover unit 7, and a threaded fastening hole 22 provided on the outer peripheral surface of the cover portion fixing hole 14 and the pipe section 2 in a state where the communication is fixed by being screwed by means of screws 23 ..

The cover portion 7 includes a part of the pipe portion 2 on the side fixed to the shaft portion 3, the shaft portion 3, the upper surface 4a of the motor portion 4, the rotor blade fixing hole 20, the cover holding portion 6, and electricity. It covers the component holding base 9, the wiring outlet 11, and the bolts and nuts that are the connecting portions.

Here, the features of the cover portion 7 described above will be described. Here, when the ceiling fan 1 is installed, the work of screwing the rotary blade 5 to the motor portion 4 in the following states will be described. The ceiling-mounting hanger portion 10 covered by the hanger cover portion 8 is attached to a hook provided on the ceiling. A shaft portion 3 fixed to the motor portion 4 is fixed to the side opposite to the ceiling side in the axial direction of the central axis of the pipe portion 2. Further, between the shaft portion 3 and the hanger cover portion 8, a cover portion 7 through which the pipe portion 2 is passed is arranged in the pipe portion insertion hole 15a. The cover portion 7 and the pipe portion 2 are not screwed together.

As described above, the pipe portion insertion hole 15a of the cover portion 7 has an elongated hole shape that penetrates the upper end surface portion 7a of the upper end surface portion 7a of the cover portion 7 in the thickness direction. Since the pipe portion insertion hole 15a has a long hole shape, the pipe portion 2 is inserted into the pipe portion insertion hole 15a and the cover portion 7 is separated from the upper surface 4a of the motor portion 4 as shown in FIG. , The cover portion 7 can be tilted as shown in FIG. That is, the cover portion 7 can be floated from the upper surface 4a of the motor portion 4, and the axial direction of the central axis of the cover portion 7 can be made different from the axial direction of the central axis of the pipe portion 2.

As a result, when the rotary blade 5 is screwed into the rotary blade fixing hole 20 provided on the upper surface 4a of the motor portion 4 in a state where the pipe portion 2 is inserted into the pipe portion insertion hole 15a, the motor portion 4 is connected. The rotor blade fixing hole 20 provided on the upper surface 4a can be exposed from the cover portion 7 in the horizontal direction, and the rotor blade fixing hole 20 can be easily visually recognized. Therefore, the ceiling fan 1 can easily carry out the screw fastening work of the rotary blade 5 for screwing the rotary blade 5 to the rotary blade fixing hole 20 even when the length of the pipe portion 2 is short, for example. It has the effect that the screw fastening workability of the rotary blade 5 is good and the workability is good. That is, in the ceiling fan 1, the screw fastening work of the rotary blade 5 to the upper surface 4a of the motor portion 4 is not easily affected by the length of the pipe portion 2.

Further, by rotating the cover portion 7 in the circumferential direction of the side surface of the cover portion 7, that is, in the circumferential direction of the motor portion 4, the above-mentioned effect is obtained at all positions of the outer peripheral side region of the upper surface 4a of the motor portion 4. Is obtained.

The length in the longitudinal direction in the elongated hole shape of the pipe portion insertion hole 15a is not particularly limited as long as the length at which the above-mentioned effect can be obtained. The length of the pipe portion insertion hole 15a in the lateral direction in the elongated hole shape is slightly larger than the diameter of the pipe portion 2 within the range in which the pipe portion 2 can be inserted and the pipe portion insertion hole 15a can be tilted. It is a dimension.

Further, since the pipe portion insertion hole 15a has a long hole shape, the cover portion 7 is inserted into the pipe portion insertion hole 15a and the cover portion 7 is separated from the upper surface 4a of the motor portion 4. It is also possible to shift the cover portion 7 in the radial direction of the truncated cone shape of the cover portion 7 instead of tilting. In this case as well, the same effect as in the case of tilting the cover portion 7 as described above can be obtained.

Further, in the cover portion 7, the cover portion fixing hole 14 and the screw fastening hole 22 provided on the outer peripheral surface of the pipe portion 2 are communicated with each other in the axial direction of the central axis of the pipe portion 2 and the cover portion 7. From the direction orthogonal to each other, the screws 23 are used to fasten and fix the screws. As a result, even if the pipe portion insertion hole 15a of the cover portion 7 has an elongated hole shape, the pipe portion 2 can be fixed at an appropriate position in the surface direction of the upper end surface portion 7a.

Further, by providing the cover portion fixing hole 14 on the groove inner side surface 7d located on the central axis side of the cover portion 7 from the outer peripheral surface of the cover portion 7, the cover portion fixing hole 14 is provided on the outer peripheral surface of the cover portion 7. The cover portion 7 and the pipe portion 2 can be screwed together at a position closer to the pipe portion 2 than in the case. As a result, the cover portion 7 can be reliably fixed at an appropriate position with respect to the pipe portion 2.

Further, since the groove portion 7c provided in the cover portion 7 has a function of guiding the screw 23 to the cover portion fixing hole 14 when the screw 23 is inserted into the cover portion fixing hole 14, the workability of the ceiling fan 1 is as good as possible. Contributes to the improvement of.

Further, in the ceiling fan 1, the design is improved by making the outer shapes of the cover portion 7 and the motor portion 4 smoothly continuous without having large irregularities, and the screw 21 for screw-fastening the rotary blade 5 is achieved. The screw 21 is covered with the cover portion 7 so that the screw head of the screw head is not visible in appearance, so that the design is improved and the appearance rich in design is realized. Further, since there is no restriction for exposing the region of the motor portion 4 to which the rotary blade 5 is screwed from the cover portion 7, it is possible to realize the cover portion 7 having a high degree of freedom for the design.

Further, in the pipe portion insertion hole 15a of the cover portion 7, the longitudinal direction of the elongated hole shape of the pipe portion insertion hole 15a is parallel to the hole axis direction of the cover portion fixing hole 14 indicated by the arrow A in FIG. Is preferable. By the hole axis direction of the longitudinal and the cover portion fixing hole 14 of the long hole shape of the pipe section insertion hole 15a are the same direction, the action for fixing by screw fastening to the pipe portion 2 of the cover part 7 This has the effect of suppressing the rotation of the cover portion 7 due to the screw tightening torque, that is, the tightening torque of the screw 23.

Further, the same effect as described above can be obtained even when the upper surface 4a or the like of the motor unit 4 is inspected at the time of maintenance and inspection after the installation of the ceiling fan 1. That is, in the ceiling fan 1, the inspection work of the upper surface 4a of the motor portion 4 is not easily affected by the length of the pipe portion 2, and the maintenance and inspection after installation is easy.

For example, in a ceiling fan with a continuous outer shape of the cover part and the motor part, if the pipe part insertion hole of the cover part is circular, it is for fixing the rotary blade provided on the upper surface of the motor part. When screwing the rotor into the hole, it is necessary to use a driver to lift the cover to a height where the rotor can be screwed. The length of the pipe section varies depending on the specifications of the ceiling fan.

Therefore, it is impossible to lift the cover section rotor blades to a height which can be screwed with a screwdriver when performing the screw fastening work on any rotor blades to rotor blades fixing holes provided on the top surface of the motor section, the pipe There is also a ceiling fan with a short part. That is, when the cover portion is lifted, the pipe portion between the bottom surface of the hanger cover portion and the upper end surface portion of the cover portion is short, so that the height of the cover portion that allows screw fastening work of the rotor blade using a driver is possible. There are also ceiling fans that cannot be secured. In some cases, a ceiling fan having such a configuration may have the ceiling-mounted hanger portion assembled at the time of shipment removed from the pipe portion, the hanger cover portion and the cover portion removed from the pipe portion, and then to the rotary blade fixing hole. it is necessary to perform the screw fastening work on any rotary wing, it can be said that the extremely bad ceiling fan of workability.

On the other hand, in the ceiling fan 1 according to the first embodiment, the pipe portion 2 is short, and the bottom surface of the hanger cover portion 8 and the upper end surface portion 7a of the cover portion 7 cannot be screwed together with the rotary blade 5 using a screwdriver. Even when the cover portion 7 is in close proximity, simply tilting the cover portion 7 or shifting the cover portion 7 in the radial direction of the truncated cone shape of the cover portion 7 is necessary to fix the rotary blade provided on the upper surface 4a of the motor portion 4. The hole 20 can be exposed and visually recognized. Therefore, the ceiling fan 1 can be configured as a ceiling fan 1 having a rich design without impairing the workability of the rotary blade 5.

Although the first embodiment shows the case where the cover portion 7 has a hollow conical shape, the shape of the cover portion 7 is not limited to the conical shape. The shape of the cover portion 7 may be a tubular shape through which the pipe portion 2 can be inserted, and may be, for example, a hollow quadrangular pyramid shape, or more specifically, a hollow quadrangular frustum shape.

As described above, the ceiling fan 1 according to the first embodiment has an effect that the ceiling fan has good workability and maintenance and inspection after construction, and is rich in design.

Embodiment 2.
FIG. 7 is a perspective view showing the cover portion 71 according to the second embodiment of the present invention. In ceiling fan 1 according to Embodiment 1 of implementation described above, instead of the cover section 7, may be used a cover portion 71 according to the second embodiment.

The cover portion 71 has a pipe portion insertion hole 15b instead of the pipe portion insertion hole 15a in the cover portion 7. The pipe portion insertion hole 15b has an elongated hole shape that penetrates the upper end surface portion 7a in the upper end surface portion 7a of the cover portion 71 in the thickness direction. In the pipe portion insertion hole 15b, the longitudinal direction of the elongated hole shape of the pipe portion insertion hole 15b is the hole axial direction of the cover portion fixing hole 14 indicated by the arrow A and the cover portion as indicated by the arrow B in FIG. The direction is orthogonal to the upper end surface portion 7a of 71.

The pipe portion insertion hole 15b has a long hole shape different from that of the pipe portion insertion hole 15a, but the long hole shape makes it possible to tilt the cover portion 71 while the pipe portion 2 is inserted. Become. As a result, even when the cover portion 71 having the pipe portion insertion hole 15b is used, the rotor blade fixing hole 20 provided on the upper surface 4a of the motor portion 4 is used as in the case of using the cover portion 7 having the pipe portion insertion hole 15a. Can be easily visually recognized, and even if the length of the pipe portion 2 is short, the screw fastening work of the rotary blade 5 becomes easy.

Further, by the hole axis of the pipe portion through the long hole shape of the hole 15b longitudinally and the cover fixing hole 14 is a direction perpendicular in the upper end face 7a of the cover portion 71, the fixation of the cover portion 71 Since it can be realized only by abutting the screw 23 against the pipe portion 2, it can be fixed at an arbitrary height. Further, there is no need to provide the screw fastening hole 22 used for screw connection with the cover portion 7 in the pipe portion 2, which is necessary when the cover portion 7 is used, and the cover portion fixing hole of the cover portion 71 is not required. The work of communicating the 14 with the screw fastening hole 22 of the pipe portion is also eliminated. Therefore, by using the cover portion 71, the processing cost of the parts of the ceiling fan 1 can be suppressed, the ceiling fan 1 can be produced at low cost, and the cover portion 71 can be easily fixed.

In the pipe portion insertion hole 15b, during screwing to a pipe section 2 of the cover portion 71, when it is difficult to obtain the effect of suppressing the rotation of the cover portion 71 by screwing torque acting for fixation of the cover portion 71 After fixing the cover portion 71 to the pipe portion 2, the inclination of the cover portion 71 may be corrected.

As described above, even when the cover portion 71 according to the second embodiment is used for the ceiling fan 1 according to the first embodiment, the workability and the maintenance and inspection after the construction are as in the case of the first embodiment. It has the effect of obtaining a ceiling fan that is well-designed and rich in design.

Further, when the cover portion 71 is used for the ceiling fan 1 according to the first embodiment, the ceiling fan 1 can be produced at a lower cost than when the cover portion 7 is used, and the cover portion 71 is also easy. Can be fixed to.

Therefore, according to the ceiling fan 1 according to each of the above-described embodiments, the pipe portion insertion holes 15a and 15b provided in the cover portions 7 and 71 have an elongated hole shape. As a result, the outer shape of the cover portions 7 and 71, which bear the design of the ceiling fan 1, is configured to be continuous with the outer shape of the motor portion 4, and the rotor blade fixing hole 20 is covered by the cover portions 7 and 71, and the length of the pipe portion 2 is reached. Even if the length is short , by tilting the cover portions 7 and 71 , the rotor blade fixing hole 20 provided in the upper part of the motor portion 4 can be visually recognized. Therefore, it is possible to obtain the ceiling fan 1 which has high screw fastening workability of the rotary blade 5 and maintenance and inspection of the upper surface 4a of the motor portion 4 and is rich in design.

The configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations as long as it does not deviate from the gist of the present invention. It is also possible to omit or change the part.

1 ceiling fan, 2 pipes, 3 shafts, 4 motors, 4a top surface, 5 rotary blades, 6 cover holding parts, 7,71 cover parts, 7a top surface part, 7b design surface, 7c groove part, 7d groove inner side surface, 8 Hanger cover, 9 Electrical parts holder, 10 Ceiling mount hanger, 10a hook mount, 11 Wiring outlet, 12-phase capacitor, 13 Cover protrusion, 14 Cover fixing hole, 15a, 15b Pipe section insertion Hole, 20 rotary blade fixing hole, 22 screw fastening hole.

Claims (1)

A cylindrical pipe part that can be mounted on the ceiling with the axial direction being vertical,
A shaft portion fixed to the pipe portion on the side opposite to the ceiling in the axial direction of the pipe portion,
A motor portion fixed to the shaft portion on the side opposite to the pipe portion in the axial direction of the pipe portion, and a motor portion.
A rotary blade whose one end side is screwed to a fastening portion provided on the outer peripheral edge portion of the ceiling side surface in the axial direction of the pipe portion in the motor portion and is rotationally driven.
A cover portion through which the pipe portion is inserted and fixed to the pipe portion on the ceiling side of the motor portion in the axial direction of the pipe portion.
Equipped with
The cover portion is
An elongated pipe portion insertion hole through which the pipe portion is inserted is provided on the upper end surface portion, and is fixed to the pipe portion by a screw from a direction orthogonal to the axial direction of the pipe portion to cover the fastening portion.
A cover portion fixing hole for fixing the screw is formed on the side surface so that the hole axial direction is orthogonal to the axial direction of the pipe portion.
The longitudinal direction of the pipe portion insertion hole is parallel to the hole axis direction.
Ceiling fan featuring.

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