JPH0315837Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an electric fan that oscillates in the vertical and horizontal directions.

(b) Prior art As a technology prior to the present invention, Japanese Patent Application Laid-Open No. 58-170895
There is an electric fan described in the publication. In this electric fan, a power supply cord is inserted between the front cover and the front surface of the electric motor, and the power supply cord is inserted into the vertically supporting portion of the electric motor using a protrusion provided on the shaft body. An insertion hole is formed in the mounting plate to prevent the power supply cord from being pinched between the lower side surface of the electric motor and a support rod of the mounting plate to which the electric motor is attached, and the power supply cord is inserted into the insertion hole. This prevents the power supply cord from moving laterally. However, in order to drill an insertion hole in the mounting plate, it is necessary to chamfer the insertion hole edge or curl it in order to prevent the power supply cord from being damaged by the insertion hole edge. The structure of the mounting plate is complicated, and the wiring of the power supply cord must be inserted into the insertion hole, which is disadvantageous.

(c) Problems to be solved by the invention This invention does not require any processing on the mounting plate.
To provide a fan with a simple structure in which a power supply cord is inserted between a front cover and the front surface of a motor so that the power supply cord is not pinched between the motor and a support rod of a mounting plate.

(d) Means for Solving the Problems In order to solve the above problems, the electric fan of the present invention includes an electric motor that drives the blower blades, a neck piece that is pivoted to the stand so that the elevation angle can be adjusted, and a neck piece that is pivoted to the neck piece. a mounting plate with a vertical support shaft,
A support rod is provided upright on the mounting plate that pivotally supports both front sides of the electric motor, a left-right swing device that swings the mounting plate left and right about the support shaft, and a support rod that pivots the electric motor on the support rod. It consists of a vertical swing device that swings vertically around a support part, and a front cover and a rear cover that cover the electric motor, etc., and the front cover has a cylindrical part surrounding the bearing part of the electric motor and the support. A regulating protrusion protruding toward the inside of the rod is formed to protrude toward the electric motor, and a power supply cord is provided between the front cover and the front surface of the electric motor and between the cylindrical part and the regulating protrusion. It is characterized by forming an insertion part that can be inserted loosely.

(E) Effect This invention forms an insertion part for loosely inserting the power supply cord between the front cover and the front surface of the motor by forming a cylindrical part and a regulating protrusion on the inner surface of the front cover. It is possible to prevent movement in the direction of the support rod without being fixed, while retaining the degree of freedom of movement.

(f) Embodiment The present invention will be explained based on an embodiment in which the swinging motor device is used to swing the swinging head in the vertical and horizontal directions.

The electric fan 1 includes a synthetic resin stand 2 incorporating a motor control switch 10, an operation control timer 11, and an oscillation changeover switch 12, a slide pipe 14 inserted into and supported by a support 13 of the stand 2 so as to be able to rise and fall, and the slide. An intermediate connector 15 formed with a bifurcated portion rotatably supported at the tip of the pipe 14
A neck piece 16 is supported on the two prongs of the intermediate connecting body 15 so as to be adjustable in elevation angle, and a fan main body 3 is supported on the neck piece 16 so as to be swingable horizontally and vertically.

The main body 3 of the electric fan includes a mounting plate 4 having a vertical support shaft 41 that is inserted into the neck piece 16 and supported by the neck piece 16, and an electric motor rotatably supported by support rods 42 erected at the front of both sides of the mounting plate 4. 31, a front cover 32 attached to the front of the electric motor 31, and the front cover 32.
a rear guard 33 attached to the front cover 32 with a nut body screwed into a cylindrical portion of the motor 3;
A blower blade 3 is attached to the rotating shaft of 1 with a spinner.
4, a front guard 35 connected to the outer edge of the rear guard 33 that covers the blower blade 34, and the electric motor 3.
Vertical swing motor device 5 attached to the upper rear surface of 1
and a cup-shaped rear cover 36 that covers the left and right oscillating motor device 6 mounted on the rear extension portion 43 of the mounting plate 4, the electric motor 31, the vertical oscillating motor device 5, the left and right oscillating motor device 6, etc. It is equipped with The electric fan main body 3 swings in the horizontal direction by rotating around the support shaft 41, and swings in the vertical direction by rotating the electric motor 31 around the pivot shaft of the support rod 42. I do.

A member that supports the neck piece 16 vertically and upwardly is formed by the stand 2, the slide pipe 14, and the intermediate connector 15, but this is not particularly limited. For example, in the case of a table fan, a wall fan, etc., a bifurcated portion can be formed at the tip of the support 13 of the stand 2 to support the neck piece 16.

The vertical oscillation motor device 5 includes a vertical oscillation motor 21 fixed by a screw to a support plate 37 fixed to the upper center of the rear surface of the electric motor 31 with a screw, and a vertical oscillation motor 21 fixed to a support plate 37 with a screw at the upper center of the rear surface of the electric motor 31. It consists of a cam body 23 that is attached to an output shaft 22 that projects to the right in the direction so as not to rotate relative to each other, and a vertical swing link 24 that has one end pivoted to the end of the cam body 23. The other end of the vertical swing link 24 is pivotally supported on a pivot support 44 formed on the right side of the mounting plate 4. When the vertical oscillation motor 21 rotates, the electric motor 31 moves to the maximum vertical oscillation angle in the vertical direction as shown in FIG. α, and vertical swing is performed with the maximum swing angle β in the downward direction as shown in FIG. The pivot support 44 is shown in FIGS. 1 and 4.
As is clear from the figure, it is located on the lower rear side of the motor 31 on the mounting plate 4. The vertical swing motor 21
is installed at the center of the rear surface of the electric motor 31 as shown in FIGS. 1 and 4, so that the vertical oscillation motor 2
Spaces are formed behind the electric motor 31 on the left and right sides of the motor. The cam body 23 and the vertical swing link 24 are housed in the right side space. Although not shown in the left space, a capacitor for driving the electric motor 31 is housed. The capacitor is fixed to a mounting piece 38 formed integrally with the support plate 37 with a screw. The support plate 37 may be fixed to the electric motor 31 by screwing a screw into the case of the electric motor 31 from the side of the support plate 37, but as in this embodiment, the Support plate 3
You can also screw it into 7. By fixing the support plate 37 with a screw as in this embodiment, even if the length of the screw is somewhat long, the tip of the screw will not contact and damage the winding of the electric motor 31. The support plate 37
A part of the rear edge is extended and bent to form a bent piece 39 into which a screw for attaching the rear cover 36 is screwed.

The left and right swing motor device 6 includes a left and right swing motor 62 fixed to the upper surface of the extension 43 of the mounting plate 4 with a screw 61, and an output that projects through a through hole 45 formed in the extension 43. a shaft 63 and the output shaft 6
A disk body 64 that is unrotatably connected to the disk body 3 at an eccentric portion thereof, and a ring portion 65 that is slidably fitted around the disk body 64 are formed at one end, and the other end is connected to the disk body 64 at an eccentric portion thereof. Left and right swing links 66 pivoted to the neck piece 16
, an annular retaining body 68 which is unrotatably connected to the output shaft 63 and has a protrusion 67 co-located with the output shaft 63; A bearing body 69 for pivotal support is provided. The extension portion 43 extends to form a step recessed toward the electric motor 31, and a retaining body 68 is positioned within the step to prevent the disc body 64 and the ring portion 65 from slipping off. It protrudes from the step. The protruding portion of the output shaft 63 from the mounting plate 4 is a D-cut portion, and a D-shaped hole 70 is formed in the disc body 64. The output shaft 63, which has a flange 71 formed on the peripheral edge portion of the surface of the disc body 64 that slides on the mounting plate 4, rotates, thereby causing the disc body 64 to rotate eccentrically.

The ring portion retaining body 68 is formed of a disk having the same outer diameter as the flange portion 71 of the disk body 64, and prevents the left and right oscillating link 66 from falling off from the disk body 64. The protrusion 67 is formed of a cylinder whose center is the same as the center of rotation of the output shaft 63. The protrusion 67 has a D-shaped hole 72 into which the output shaft 63 is fitted. Therefore, the retaining body 68 rotates eccentrically at the same time as the disc body 64, but the protrusion 67 rotates but does not rotate eccentrically. The bearing body 69 is made of sheet metal, and forms a sliding surface for the retaining body 68 and a bearing hole 73 for pivotally supporting the protrusion 67 .
The bearing body 69 is fixed to the mounting plate 4 with screws 74. Since the bearing body 69 is fixed to the mounting plate 4, the output shaft 63 is supported by the bearing on the side of the left-right oscillating motor 62 and the bearing hole 73 of the bearing body 69. Therefore, although a force tends to deflect the output shaft 63 due to the crank movement of the left and right oscillating link 66 due to the rotation of the disk body 64, the output shaft 63 is reliably supported vertically without deflecting.

In this embodiment, the output shaft 63, disc body 64, and retaining body 68 are molded from synthetic resin. In addition, the mounting plate 4, the disc body 64, and the disc body 6
The output shaft 63, the disk body 64, and the retaining body are made of oil-impregnated synthetic resin to reduce the sliding resistance between the left and right swing link 66 and the retaining body 68, and the retaining body 68 and the bearing body 69. It is good to form 68.

The front cover 32 includes a cylindrical portion 81 surrounding a bearing portion 80 from which the rotating shaft of the electric motor 31 protrudes, and a first rib-shaped regulating protrusion 82 that protrudes inward on the base end side of the support rod 42. A second rib-shaped regulating protrusion 83 is formed inside the pivot shaft portion of the support rod 42. That is, the inner surface of the front cover 32 has a cylindrical portion 81 surrounding the bearing portion 80 of the electric motor 31, and first and second tube portions that protrude inwardly from the support rod 42.
The rib-like regulating protrusions 82 and 83 of the electric motor 31
It is formed so as to protrude in the direction, and thereby, between the front cover 32 and the front surface of the electric motor 31 and between the cylindrical portion 81 and the first and second rib-shaped regulating protrusions 82 and 83. An insertion portion 85 is formed in which a power supply cord, which will be described later, is loosely inserted.

A power supply cord 84 for the left-right oscillating motor 62 is routed along the upper surface of the mounting plate 4 and held at appropriate locations on the mounting plate 4. The power supply cord 84 is further passed through the insertion portion 85 to the mounting piece portion 38 of the support plate 37 at the rear of the upper surface of the electric motor 31.
wired to the part. The power supply cord 84 is connected to a lead wire, a capacitor, etc. from the electric motor 31 connected at the mounting piece 38, and is connected to a power supply cord 86 connected to the switches 10, 12 and the timer 11. The power supply cord 86
The wire is loosely inserted into the insertion part 85 together with the power supply cord 84, passed between the front cover 32 and the front edge of the mounting plate 4, drawn into the insertion part of the neck piece 16, passed through the slide pipe 14, and into the stand 2. be done. The power supply cords 84 and 86 are passed between the first rib-like regulating protrusion 82 and the cylindrical part 81, and between the second rib-like regulating protrusion 83 and the cylindrical part 81. As shown in FIGS. 6 and 7, when the electric motor 31 swings vertically, the power supply cords 84 and 86 expand and contract because they are wired close to the pivot shaft of the electric motor 31. The amount is small, and lateral movement can be suppressed accordingly. Further, the lateral movement is caused by the first and second rib-like regulating protrusions 82,
83, the support rod 42 is reliably prevented from moving to the other side.

In this embodiment, the first rib-like regulating protrusion 8
2 is formed to such a length that the end thereof is located inside the support rod 42 even when the front cover 32 is in the farthest position from the mounting plate 4, as shown in FIG. A bent portion 87 is formed on the front edge of the mounting plate 4 to prevent the power supply cord 86 from being damaged when it comes into contact with it.

(g) Effects of the invention The present invention has a simple structure in which a cylindrical part and a regulating protrusion are formed on the front cover, which allows the power supply cord to move freely and prevent it from coming into contact with the support rod due to its movement. This prevents the power supply cord from being damaged.

[Brief explanation of drawings]

Figure 1 is a right sectional view of the main part, Figure 2 is a perspective view, Figure 3 is a sectional bottom view of the main part, Figure 4 is a plan view of the same, and Figure 5 is a sectional view of the main part.
6 is a front view of the same, FIG. 6 is a right sectional view of the main part showing the state where the cover is facing upward, FIG. 7 is a right sectional view of the main part showing the state where the cover is facing downward, and FIG. 8 is a perspective view of the front cover. 2...Stand, 3...Fan main body, 4...Mounting plate, 5...Vertical swing motor device (vertical swing device), 6...Right and left swing motor device (left and right swing device), 16... Network piece, 31...Electric motor,
32...Front cover, 34...Blower blade, 36...
Rear cover, 41... Support shaft, 42... Support rod, 81
... Cylindrical portion, 82... First rib-shaped regulating protrusion (regulating protrusion), 83... Second rib-shaped regulating protrusion (regulating protrusion),
84, 86... Power supply cord, 85... Insertion part.

Claims (1)

[Scope of utility model registration request] An electric motor that drives a blower blade, a neck piece that is pivoted to a stand so that the angle of elevation can be adjusted freely, a mounting plate that has a vertical support shaft that is pivoted to the neck piece, and the mounting plate that pivots the front side of the electric motor. An upright support rod, a left-right swinging device for swinging the mounting plate left and right about the support shaft, and a vertical swinging device for swinging the electric motor up and down about the pivot portion of the support rod. The device includes a front cover and a rear cover that cover the electric motor, etc., and the front cover has a cylindrical portion surrounding a bearing portion of the electric motor and a regulating protrusion protruding inwardly of the support rod on the inner surface of the front cover. An insertion portion is formed to protrude toward the electric motor, and a power supply cord is loosely inserted between the front cover and the front surface of the electric motor and between the cylindrical portion and the regulating protrusion. Fan.