JPH0117678Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention relates to an electric fan whose head is oscillated by a oscillating motor. Those that perform this are also considered to be in its field of use.

(b) Prior art As a technology prior to this invention, Publication of Utility Model No. 57-52393
There is an electric fan described in the publication. The electric fan is equipped with a swinging mechanism in which a crank is fixed to the shaft of a swinging motor with a knock pin and an E-ring, and one end of a swinging rod is pivotally supported on a boss portion of the crank. Therefore, the shaft of the oscillating motor becomes like a cantilever, and the shaft tends to be pulled by the tensile force acting on the crank at the oscillating rod. As a result, the shaft of the oscillating motor is conventionally formed of a metal rod so that it can be fixed with a dowel pin, and due to the connection structure with the crank, the amount of protrusion is large, and the cost is high and workability is poor. It was hot.

(c) Problems to be Solved by the Invention The present invention provides an electric fan that prevents the output shaft of the oscillating motor from deflecting, performs smooth oscillating motion, and reduces the amount of protrusion of the output shaft. .

(d) Means for Solving Problems The present invention uses a oscillating motor device to oscillate the main body of an electric fan, and the present invention provides a oscillating motor that mounts the oscillating motor device on a mounting plate, and a oscillating motor that mounts the oscillating motor device on a mounting plate. a cam body that is non-rotatably fitted to the output shaft of the vibration motor; a bearing body that is attached to the mounting plate and that pivotally supports the tip of the output shaft protruding from the cam body; and one end of the cam body The problem is solved by a pivoting oscillation link and a means formed by the oscillation link.

(e) Effect This invention supports the tip of the output shaft with a bearing body, supports a gum body in the middle of the output shaft, and molds the output shaft from a material with low strength such as synthetic resin. can rotate with sufficient deflection,
Even if the output shaft and the cam body are only connected to each other by a rotation prevention structure, the bearing body also acts to prevent the shaft from coming off.

(F) Embodiment The present invention will be explained based on an embodiment in which the present invention is used in a fan that oscillates horizontally and vertically.

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 and supported by the neck piece 16, and an electric motor 31 rotatably supported by indicator rods 42 erected on both sides of the mounting plate 4. , 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.

FIG. 1 is a right sectional view showing the area around the electric motor 31 of the fan main body 3, FIG. 2 is a sectional bottom view showing the same part as in FIG. 1, and FIG. 3 is a sectional plan view showing the same part as in FIG. 1. FIG. 4 is a sectional rear view showing the same part as FIG. 1, and FIG. 5 is a perspective view of the electric fan 1. Figure 6 is an enlarged sectional view of the 6 parts of the left and right oscillating motor device;
FIG. 9 is an exploded perspective view of the same part. FIG. 7 is a side sectional view showing the area around the electric motor 31 of the fan main body 3 in a state where it has been rotated downward by the maximum angle β degrees;
The figure is a side sectional view similar to FIG. 7 in a state in which it has been rotated upward by the maximum angle α degrees.

A member that supports the neck piece 16 in a downwardly depressable manner 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 screws to a support plate 37 fixed to the upper center of the rear surface of the electric motor 31 with screws, and a vertical oscillation motor 21 fixed by screws to a support plate 37 fixed to the upper center of the rear surface of the electric motor 31, and a vertical oscillation motor 21 that 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 oscillating motor 21 rotates, the vertical oscillating link 24 and the cam body 23 cause the electric motor 31 to move around the seventh pivot point at the tip of the support rod 42.
The head is oscillated in the vertical direction with the oscillation state shown in the figure and FIG. 8 as the maximum vertical oscillation angle. As is clear from FIGS. 1 and 3, the shaft support 44 is located on the lower rear side of the motor 31 of the mounting plate 4. Since the vertical oscillation motor 21 is mounted at the center of the rear surface of the electric motor 31 as shown in FIGS. 3 and 4, spaces are formed behind the electric motor 31 on the left and right sides of the vertical oscillation motor 21. . The cam body 23 and the vertical swing link 24 are housed in the right side space. Although not shown, the left space accommodates a capacitor that drives the electric motor 31. The capacitor is fixed to a mounting piece 38 formed integrally with the support plate 37 with a screw. The screws may be screwed into the case of the electric motor 31 from the side of the support plate 37, but they may also be screwed into the support plate 37 from the inner side of the case of the electric motor 31 as in this embodiment. By fixing the support plate 37 with a screw as in this embodiment, even if the length of the screw is somewhat long, the motor 31
The tip of the screw will not touch and damage the winding. A portion of the rear edge of the support plate 37 is extended and bent to form a bent piece 39 into which a screw for attaching the rear cover 36 is screwed.

A spring body 7 is provided between the support plate 37 and the mounting plate 4.
is being constructed. In this embodiment, the spring body 7 is constructed by hooking its end portions between the bent piece 39 and the rear end of the extension portion 43. The spring body 7 has a spring force that compensates only for the difference in weight between the front and rear guards 3533 located in front of the pivot portion of the holding rod 42 and the blower blades 34, etc., which are heavier. The balance point of the spring body 7 is set near the center of the vertical swing angles α degrees and β degrees, and the force required for upward movement and the force required for downward movement are determined. It is set to be almost constant, and to ensure smooth vertical swing. Note that the spring body 7 uses a coil spring, and when used, the spring force of the coil spring is used in a characteristic range in which it is approximately constant in the expansion and contraction range, so that the spring force is approximately constant in the vertical swing range. You can get rotational power. As the spring body 7, a spiral constant force spring used for biasing the slide pipe 14 of the electric fan 1 upward may be used.

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 part 43 extends to form a step recessed toward the electric motor 31, and the disk body 64, ring part 65, and retaining body 68 are located within the step, and the protrusion 67 Protrudes from the step. A portion of the output shaft 63 protruding 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 comes into sliding contact with the mounting plate 4, rotates, thereby causing the disc body 64 to rotate eccentrically. In this embodiment, the straight portion of the D-shaped hole 70 is formed so as to face the circular arc of the disc body 64, so that the distance between the center of the output shaft 63 and the center of the disc body 64 is as shown in FIG. The diameter D of the disc body 64 can be set small in order to obtain a required design constant value of P. As a result, the diameter LD of the locus drawn by the disk body 64 can be made smaller, the movable range of the left and right swing links 66 can be reduced, and the width and rearward protrusion of the extension part 43 can be reduced, making it more compact. It is something that can be achieved. Furthermore, since the disk body 64 has a small diameter, the sliding resistance between the ring portion 65 and the disk body 64 is reduced, and smooth operation can be achieved. In addition, a protrusion is formed on the surface of the disc body 64 that comes into sliding contact with the mounting plate 4 to reduce sliding resistance, thereby reducing the sliding contact area and ensuring smooth rotation.

The ring retaining body 68 is formed of the same plate having the same outer diameter as the flange 71 of the disc body 64, and prevents the left and right oscillating link 66 from falling off from the disc 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 left and right oscillating motor 62 side 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 caused by the rotation of the disk body 4, 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 disc 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.

Further, although this embodiment uses a disk body as the cam body, it may have a structure similar to a crank used in conventional technology, and even if the structure is the same, the thickness can be made thinner. It is something.

Further, although the bearing body 69 is fixed to the mounting plate 4 with screws 74, the tongue piece may be inserted into a locking hole or notch of the mounting plate and bent. Further, although the bearing body 69 is made of sheet metal, if it is molded of synthetic resin, it can be elastically engaged with the mounting plate 4 by elastic pawls.

(G) Effects of the invention In this invention, the tip of the output shaft of the oscillating motor is supported by a bearing body, so that the output shaft can rotate without deflection and oscillate smoothly. The structure can be simplified by preventing rotation, and since the bearing body also prevents the bearing from coming off, it is possible to make the swinging device compact.

[Brief explanation of drawings]

Figure 1 is a right side cross-sectional view of the main part, Figure 2 is a cross-sectional bottom view of the main part, Figure 3 is a cross-sectional top view of the main part, Figure 4 is a cross-sectional rear view of the main part, Figure 5 is a perspective view, and Figure 6 is a cross-sectional view of the main part. is a sectional view of the main part of the left-right oscillation motor device, FIG. 7 is a sectional view of the main part showing the maximum tilted state, FIG. 8 is a right sectional view of the main part showing the maximum upright state, and FIG. 9 is an exploded perspective view of the left-right oscillation motor device. figure,
FIG. 10 is a bottom view of the same. 3...Fan main body, 4...Mounting plate, 6...Right and left oscillating motor device, 31...Electric motor, 62...Right and left swinging motor, 63...Output shaft, 64...Disc body (cam body) , 65... Ring portion, 66... Left and right swing link, 69... Bearing body.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In an electric fan whose main body is oscillated by a oscillating motor device, the oscillating motor to which the oscillating motor device is mounted on a mounting plate, and the output shaft of the oscillating motor. a cam body that is non-rotatably fitted to the cam body, a bearing body that is attached to the mounting plate and that pivotally supports the tip of the output shaft protruding from the cam body, and a neck whose one end is pivotally supported by the cam body. An electric fan formed by a swing link. 2. A claim for registration of a utility model in which the cam body is formed of a disc body that slides on a mounting plate, and a ring part is formed at one end of the oscillating link to be fitted and pivoted around the disc body. The electric fan described in scope 1.