JPS6329992Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention relates to electrical equipment that is used by hanging from the ceiling.Specifically, its application fields are ceiling fans, lighting equipment, etc.

(b) Prior art The technology prior to this proposal is Utility Model Publication No. 46-30388.
There are publications etc. The structure described in this publication has a sliding plate integrally formed at the upper end of the pipe, and is difficult to mold and has low strength.
Therefore, it is possible to mold the pipe and sliding plate separately and then combine them together, but if screws are used as the connection method, the connection may loosen after long-term use and there is a risk of falling accidents. . When coupling with pins is used, the power supply cord passes through the pipe, making it difficult for the pins to pass through the pipe smoothly.

(c) Purpose of the invention This invention is a hanging type that connects a hanging tube and a spherical support with a pin, so that the power supply cord can be smoothly inserted into the hanging tube and the pin can pass through the hanging tube. The purpose is to provide electrical equipment.

(d) Structure of the device This device consists of a main body of the device that operates by power supply, a suspension pipe that suspends and supports the main body and through which the power supply cord is inserted, and a large diameter hole formed in the upper end of the suspension pipe. a small-diameter pin that is penetrated by the spherical support, a spherical support that has an insertion hole through which the hanging tube is inserted, a notch that supports both ends of the small-diameter pin, and a spherical support that is slidably placed and supported. A hanging electrical device is formed with the mounting frame body, and when the small diameter pin is passed through the large diameter hole, a large gap is secured between the inner surface of the hanging pipe body and the small diameter pin, making it easy to insert the power supply cord. The small-diameter pin is positioned at the center of the suspension tube and is connected to the suspension tube when the spherical support is attached to the suspension tube.

(E) Example The present invention will be explained using a ceiling fan as an example of a hanging electric device.

The ceiling fan 1, which is a hanging electric device, has an electric motor section 2.
, a plurality of air blowing blades 3 fixed to the rotor of the electric motor section 2, a control box 4 attached to the center of the lower surface of the electric motor section 2, a hanging pipe body 5 attached protruding from the center of the upper surface of the electric motor section 2, A spherical support 7 attached to the upper end of the hanging tube 5 with a small-diameter pin 6, a mounting frame 8 for mounting and supporting the spherical support 7, and a cover 9 covering the mounting frame 8. It becomes more.

The air blower blade 3 consists of a fitting 31 for attaching to the stator and a blade plate 32 made of sheet metal. A mounting seat 33 for attaching to the stator is formed at one end of the mounting fitting 31, and a vane mounting seat 34 is formed at the other end. The blade plate 32 is fixed to the blade mounting seat 34 using a caulking pin or the like. A protrusion 35 is formed on the peripheral edge of the vane plate 32 . In this embodiment, the protrusion 35 is formed by bending the peripheral edge of the wing plate 32 upward. The protrusion 35 is not limited to this embodiment structure, but may be formed by bending and overlapping the peripheral edge of the blade plate 32, may be formed in a curled shape, or may be formed by attaching a separate member. . A protrusion 35 is provided on the peripheral edge of the wing plate 32.
By forming the wing plate 32, its strength can be improved using a thin sheet metal, vibration and deflection can be suppressed, and the safety of the vane plate 32 against contact objects during rotation is improved. For the ceiling fan using the above-mentioned blower blade 3, an ordinary sound level meter specified in JIS C 1502 (ordinary sound level meter) was installed below the blower blade 3.
Measure the noise level with the device mounted on a sturdy mounting base that does not resonate in a place with no obstacles within 300 m. When the ceiling fan 1 is rotated at 185 rpm with the thickness of the sheet metal forming the blower blade 3 being 0.9 mm, the height of the protrusion 35 being 5 mm, and the length being 140 cm, the noise value is 48.5 dB.
So, using a blower blade 3 with a length of 100cm,
When rotated at 270 rpm, the noise value becomes 50 dB. When measuring the noise value when the protrusion 35 is not formed on each of the above-mentioned blower blades 3, it is 50.5 dB.
It became 51.5dB. Therefore, when the protrusion 35 is formed, the noise value is 1 to 2 dB lower than when it is not formed.
descend.

The mounting frame 8 is formed by punching and bending a sheet metal, and includes a mounting leg portion 81 for fixing to the ceiling 11 with a screw 10 and a mounting portion 82 for mounting and supporting the spherical support 7. Become. The mounting portion 82 is formed with a circular hole 83 into which the spherical support 7 is fitted. A rib 84 is formed at the edge of the circular hole 83 to receive the spherical support 7 bent downward.
A protrusion 85 is formed on a part of the rib 84. A notch 86 is formed in the mounting portion 82 and communicates with the circular hole 83 through which the hanging tube 5 is inserted.

A large diameter hole 51 is formed at the upper end of the hanging tube 5, through which the small diameter pin 6 passes. The large diameter hole 51 is formed to pass through the center of the hanging tube 5, and is formed to be elongated at least in the lateral direction, and is formed to gradually become larger on the outer surface side of the hanging tube 5. has been done. The small diameter pin 6 is movable within the large diameter hole 51 at least laterally. Since the small diameter pin 6 is movable in the lateral direction, the power supply cord 12 is installed inside the hanging tube 5.
Although a portion of the large-diameter hole 51 is covered by the power supply cord 12 when the small-diameter pin 6 is inserted through the large-diameter hole 51, a sufficient margin is secured in the large-diameter hole 51 for the small-diameter pin 6 to be inserted through. The pin 6 can be easily penetrated therethrough. In this embodiment, the large-diameter hole 51 is formed as a round hole, but is not particularly limited, and various shapes such as a horizontally long elliptical hole, a triangular hole, etc. are possible. The tip of the small diameter pin 6 is tapered to facilitate insertion into the large diameter hole 51.

The spherical support body 7 includes a cup-shaped frame portion 71 having a spherical side surface, and a cylindrical portion 72 into which the hanging tube body 5 is inserted. The inner diameter of the frame portion 71 is formed to be larger than the length of the small diameter pin 6, and the inner diameter of the frame portion 71 is larger than the length of the small diameter pin 6.
The inner diameter is formed to be approximately equal to the outer diameter of the hanging tube 5. A detent groove 73 is formed on the outer surface of the frame portion 71, with which the protrusion 85 engages. The anti-rotation groove 73 extends in the vertical direction, and the protrusion 85 is located approximately to the side of the center of the spherical surface of the frame portion 71, and the protrusion 85 is located approximately to the side of the center of the spherical surface of the spherical support 7. Rotation about the axis is prevented, but the circular hole 83
and can freely slide against the ribs 84. Therefore, shaking and vibration during operation of the ceiling fan 1 are efficiently absorbed by the sliding movement of the spherical support 7 with respect to the mounting frame 8. A notch 74 is formed at the upper end of the cylindrical portion 72 to support both ends of the small diameter pin 6. The center line connecting the notches 74 is formed to substantially intersect the vertical center line of the cylindrical portion 72. When the small diameter pin 6 is fitted and supported in the notch 74, the small diameter pin 6 is moved laterally within the large diameter hole 51, and the small diameter pin 6 is positioned at the center of the hanging tube 5. . At this time, if the thickness of the power supply cord 12 is larger than half the difference between the inner diameter of the hanging tube 5 and the outer diameter of the small diameter pin 6, the small diameter pin 6 connects the hanging tube to the hanging tube.
The power supply cord 12 is held in pressure contact with the inner surface. In order to easily support the small diameter pin 6 in the notch 74, the open portion of the notch 74 forms a guide portion 75 that gradually widens. Further, in order to prevent the small diameter pin 6 from coming off from the notch 74,
A small protrusion may be formed in the middle of the notch 74 to press down on the upper side of the small diameter pin 6. However, by forming the small protrusion, the small diameter pin 6 can be inserted into the notch 7.
4 requires a somewhat large force to forcibly overcome the small protrusion.

(f) Effects of the invention In this invention, a small diameter pin that connects the spherical support and the suspension tube is passed through a large diameter hole in the suspension tube, so that the insertion of the small diameter pin into the large diameter hole is powered. This can be done easily without being hindered by the cord, and when the spherical support and the hanging tube are connected, the small diameter pin is located at the center, providing reliable hanging support.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the main part of the project, Figure 2 is a side view,
Figure 3 is a side view of the main part partially cut away during connection, Figure 4 is a side view of the main part partially cut away after connection, Figure 5 is a plan view of the mounting frame, and Figure 6 is a partially cutaway side view of the main part. FIG. 7 is a perspective view of the blade, FIG. 7 is a plan view of the blower blade, and FIG. 8 is a cross-sectional view taken along the line shown in FIG. 7. 5... Hanging pipe body, 6... Small diameter pin, 7... Spherical support, 8... Mounting frame, 12... Power supply cord,
51...Large diameter hole, 72...Cylinder part (insertion hole), 74
...Notch.

Claims (1)

[Scope of utility model registration request] A device main body that operates by power supply, a hanging tube that suspends and supports the main body and through which a power supply cord is inserted, a small diameter pin that is penetrated through a large diameter hole formed at the upper end of the hanging tube, and A suspension comprising a spherical support having an insertion hole through which the suspension tube is inserted and a notch for supporting both ends of the small diameter pin, and a mounting frame for slidably mounting and supporting the spherical support. Lower type electrical equipment.