JPH081192B2 - Fan - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fan mounted on a desk or a floor for use.

(B) Conventional Technology As a technology prior to the present invention, there is an electric fan described in JP-A-62-191697. The fan supports the elevation and angle adjustment of a rotary support base that swings to the left and right at the bottom of an L-shaped support body that supports an electric motor that drives blower blades at the top. The front and rear guards covering the blower blades have the central part of the rear guard attached to the upper part of the support, and the front guard is attached to the outer ring of the rear guard with a guard ring.

(C) Problem to be Solved by the Invention In the prior art, a support is required to support the electric motor and the front and rear guards on the rotary support, the structure is complicated, and the support is located on the suction side of the blower blade. And it becomes a ventilation resistance.

It is a technical object of the present invention to provide an electric fan having a reduced number of parts and a simplified structure to reduce air flow resistance.

(D) Means for Solving the Problems The present invention is a base in which a swinging electric motor is installed, and is pivotally supported on the base so as to form a surface continuous with the upper surface of the base, and the left and right sides of the swinging electric motor are pivoted. , A support ring that is reciprocally rotated, a support ring that is attached to the rotary support so that the elevation angle can be adjusted by a connecting part that is formed in the lower part, and an outer ring is supported by the support ring, and a blower blade is provided in the center. A means for solving the problem by means of a motor support guard body mounted with an electric motor for driving an outer ring, a support ring supporting the outer ring, and a guard body covering the blower blades with the power supply unit support guard body. Is.

The rotation support base and the base form a continuous surface, and the structure may form a circular recess if the base top surface is a flat surface, and the rotation support base may have a disk shape. If the structure is a truncated cone such as a truncated pyramid, the rotation support table may be formed into a cone such as a cone or a pyramid that is stacked on the truncated cone so that the whole is a cone.

The guard body may be made of steel wire or synthetic resin.

The support ring can be formed in a circular shape, a square shape, or the like, and the shape of the guard body is appropriately formed in accordance with the shape of the support ring.

(E) Action The present invention supports the electric motor with the electric motor support guard body,
By connecting both guard bodies with the support ring, the support ring supports the electric motor through the guard body.

By supporting the electric motor with the support ring, it is not necessary to form members having high resistance on the suction side and the blowing side of the blower blade.

(F) Example A configuration of the present invention will be described in detail based on the illustrated fan 1.

9 is a front view of the fan 1, and FIG. 10 is a right side view of the fan 1. The electric fan 1 has a base 3 in which a swinging electric motor 2 is installed, and a rotary support 4 which is pivotally supported by the base 3 so as to reciprocate left and right by the swinging electric motor 2. The fan stand 5 is formed by the rotation support base 4. The fan stand 5 has a hemispherical outer shape, and the outer surface (upper surface) of the base 3 and the outer surface (upper surface) of the rotary support 4 form a continuous surface.

A fan main body 6 is supported on the rotation support base 4 so that the elevation angle can be adjusted. The fan main body 6 includes a support ring 8 having a pivotal support portion 7 formed on a lower portion thereof, an electric motor support guard body 11 and a girt body 12 which are mounted by fitting outer rings 9 and 10 to the support ring 8, and a motor support. An electric motor 14 fixed to the mounting portion 13 at the center of the ghat body 11.
And a blower blade 16 mounted on the rotating shaft 15 of the electric motor 14.

The support ring 8 is made of synthetic resin and has a guard body 1 on its inner surface.
Protrusions for fitting and holding the outer rings 9 and 10 of 1 and 12 are formed at a plurality of locations. An elastic piece 17 is formed on the lower portion of the support ring 8 to facilitate removal of the guard body 12. The guard body 12 constitutes a front guard body located on the blowing side of the blower blade 16,
It has an ornament 18 in the center and the ornament 18 and outer ring
A large number of wire rods 19 are installed between 10 and. The electric motor support guard body 11 corresponds to a rear guard body, and the mounting portion 13 is formed of a sheet metal plate body as shown in FIG. A large number of wire rods 20 are installed between the mounting portion 13 and the outer ring 9.

Since the electric motor 14 is fixed to the mounting portion 13 and supported by the support ring 8 via the guard body 11, there are wire rods 19 and 20 having small blow resistance on the suction side and the blow side of the blower blades 16, The blowing efficiency is improved compared to a fan such as a fan having a support on the suction side.

The electric motor 14 is fixed to the inner surface side of the mounting portion 13, and the outer surfaces of the electric motor 14 and the mounting portion 13 are covered with the front and rear cover members 21, 22. A ventilation hole 23 is formed on the lower surface side of the front cover body 21. A handle recess 24 is formed in the upper portion of the rear cover body 22. The handle recess 24 is inserted so as to be fitted substantially into the insertion hole 25 formed in the mounting portion 13, and is positioned so as to cover the upper portion of the electric motor 14. Handle recess
Vent holes 26 are formed on the side of the motor 14 of 24. Electric motor 14
During operation of the motor, air is blown from the ventilation holes 26 to the electric motor 14 by the blower blades 16.
And flows toward the blower blades 16 from the ventilation holes 26.
When the electric motor 14 is stopped, the heat causes the air flowing in from the vent hole 23 to rise around the electric motor 14 and be discharged from the vent hole 26 via the handle recess 24. The grip recess 24 is fitted in the insertion hole 25 of the mounting portion 13 to improve the strength. A switch 27 for stopping and controlling the swinging electric motor 14 is fixed to the lower portion of the mounting portion 13. The rear cover body 22 is formed with a through hole 28 through which the operating portion of the switch 27 projects, and elastic locking pieces to the mounting portion 13 are provided on both sides thereof.
Forming 29. A rib 30 is formed around the rear cover body 22 for contacting with the periphery of the mounting portion 13 for positioning. The rear cover body 22 is positioned and temporarily fixed by the rib 30 and the elastic locking piece 29, and is securely fixed by the screw 31.

The electric cord 32 connected to the electric motor 14 and the switch 27 is
A wire rod 20 extending downward from the mounting portion 13 toward the pivotal support connecting portion 7
And is housed in a guide body 33 that is wired along and is elastically engaged with the wire rod 20. The upper portion of the guide body 33 is engaged with the rear cover body 22, and the lower portion thereof is elastically engaged with the pivot support portion 7.

Next, with reference to FIG. 5 to FIG. 8, the depression / elevation angle adjusting structure of the fan main body 6 will be described.

A pivot 40 is vertically provided at the center of the rotary support 4, and the pivot 40 is formed of a metal cylinder. The pivot 40 is integrated by inserting when the rotary support 4 is molded with synthetic resin. The rotation support base 4 is a shaft support hole formed in the center of the base 3.
By inserting the pivot 40 into 41, it is rotatably supported by the base 3. The shaft support hole portion 41 is formed by an insertion hole 42 formed in the base 3 and a bearing body 44 having a collar portion 43 inserted into the insertion hole 42. The positioning of the bearing body 44 with respect to the insertion hole 42 is performed by the collar portion 43.
The ribs 45 formed on the lower surface of the collar 43 are used to prevent rotation by placing the ribs 45 around the insertion holes 42 around the insertion holes 42.
It is done by fitting to. The rotation support base 4 is positioned by placing the lower end of the boss portion when the pivot shaft 40 is insert-molded on the flange portion 43 of the bearing body 44. A pair of recesses 48, 49 for pivotally supporting the pivot support connecting portion 7 of the support ring 8 are formed on the left and right sides of the rotary support base 4 centered on a communication hole 47 formed in the center of the rotary support base 4 to the pivot 40. Is forming.

The pivotal connecting portion 7 formed in the lower portion of the support ring 8 is formed by a pair of left and right hanging pieces 71 and 72, and the front and rear edges of the hanging pieces 71 and 72 are connected by the hanging walls 73 and 74, and the lower surface opening is formed. It is shaped like a box. The hanging pieces 71 and 72 have a shaft support hole 76 through which the shaft body 75 is inserted. The shaft body 75 is formed by a bolt having a threaded portion at its tip. A U-shaped depression / elevation angle adjusting plate 77 is fixed to a screw 78 on the support ring 8 between the hanging pieces 71, 72, and the hanging protruding pieces 79, 80 of the adjusting plate 77 are spaced from the hanging pieces 71, 72 at a constant interval. Located with. Shaft supporting holes 81, 82 through which the shaft body 75 is inserted are formed in the hanging protrusions 79, 80. Between the hanging piece 71 and the hanging protruding piece 79 and between the hanging piece 72 and the hanging protruding piece 80, the shaft supporting holes 83, 84 of the shaft body 75 are provided.
The supporting portions 85 and 86 having the above are held and pivotally supported. The supporting portions 85 and 86 may be formed integrally with the base 3, but they are formed as separate members in this structure. Drooping pieces 71, 72, supporting parts 85, 86 and hanging protrusions 7
The shaft body 75 that penetrates 9,80 is prevented from coming off. In this structure, the nut 87 is screwed into the protruding end of the shaft body 75,
A screw hole 88 and a projecting portion 89 are formed at the lower ends of the support portions 85 and 86 that project from the nut 87 at the end portion of 75. A groove 50 for guiding the end of the shaft 75 is formed inside the communication hole 47 of the recesses 48, 49 of the rotary support 4. Supports 8 are provided at the bottoms of the recesses 48, 49.
A through hole 51 into which the projections 89 of 5,86 fit is formed, and an insertion hole 53 into which the screw 52 screwed into the screw hole 88 is inserted. Support part 8
By fixing 5,86 to the rotary support 4, the support ring 8 is pivotally supported by the shaft 75 in the elevation angle adjusting direction.

A torsion spring 90 is housed in the support portion 85, one end of the torsion spring 90 is locked to the support portion 85, and the other end thereof is a hanging protrusion 79 of the adjusting plate 77.
Is locked. The torsion spring 90 imparts to the support ring 8 a force that balances the force of further rotating in the adjustment direction due to the weight of the fan main body 6 in adjusting the elevation angle of the support ring 8.

A shaft support hole 82 is formed as a burring hole in the hanging protrusion 80 of the adjusting plate 77, and a braking plate 91 that slides in pressure contact with the surface of the hanging protrusion 80 on the support portion 86 side is caulked in the burring hole. , Pivotally supported. The locking protrusion 92 formed on the braking plate 91 is engaged with the support portion 86. Since the braking plate 91 is engaged with the support portion 86,
When adjusting the elevation angle of the support ring 8, the fan main body 6 is held by the frictional force at the adjusted position.

The elevation angle adjusting body in this structure is a torsion spring 90 and a braking plate.
Although it is formed of 91, it may be formed of a ball stopper or the like.

By forming a pair of pivot support parts 7 with hanging pieces 71, 72, the width of the part that supports the elevation / depression angle can be expanded,
The rotation is stable without sideways movement, and the force applied to the pivot can be dispersed. Further, by forming the depression / elevation angle adjusting plate 77 in a U shape, the hanging pieces 71, 72 can be reinforced and the lower portion of the support ring 8 can be reinforced. Since the supporting portions 85 and 86 can be assembled in advance in the pivot support connecting portion 7 as separate members, the depression / elevation angle adjusting body can be easily assembled.

Since the front and rear edges of the adjusting plate 77 are in contact with the inner surfaces of the hanging walls 73 and 74, they are pressed against the front and rear upper edges of the recesses 48 and 49 when the elevation angle is maximized as shown in FIG. At this time, the sagging walls 73 and 74 are prevented from being bent, and the hanging walls 73 and 74 can be prevented from being whitened or damaged due to long-term use or excessive pressure contact.

Next, a structure for swinging the fan main body 6 left and right will be described with reference to FIGS. 1 to 4.

The bottom surface of the base 3 is open, and the back plate 55 is formed with rubber feet.
Close it. A switch body 56 for controlling the rotation of the electric motor 14 is mounted in the rear part of the base 3. The switch body 56 uses a rotary switch, and a timer mechanism for time control is also incorporated. Since the switch body 56 is mounted on the inclined inner surface of the base 3, the switch body 56 is fixed to the support plate 106 that is bent and formed by the screw 105, and the support plate 106 is fixed by the screw 107 to the boss 108 of the base 3. It is fixed to. Since the support plate 106 is bent, the support plate 106 bends so as to be pushed into the base 3 when the force pressing the switch body 56 acts, so that the lower portion of the switch body 56 is formed on the back plate 55. Support 109
Supported by. The supporting portion 109 projects downward, and its projecting amount is formed to be lower than that of the rubber foot formed on the back plate 55, and it is located at an intermediate portion between the rubber feet and acts to prevent the base 3 from falling. The electric cord 32 is inserted into the pivot 40 through the insertion hole 47, drawn into the base 3, connected to the swinging electric motor 2 and the switch body 56, and then drawn out from the lower part of the base 3. The drawn electrical cord is connected to a commercial power source.

A mounting plate 59 is fixed to a boss 57 vertically provided in the base 3 with a screw 58. The mounting plate 59 is fixed to the inner surface of the upper portion of the base 3 without rattling so as to form a space for accommodating the swing transmission mechanism. The swinging electric motor 2 is fixed to the lower surface of one side of the mounting plate 59 with a screw so that the output shaft 60 projects on the upper surface. Mounting plate
On the other side of 59, a bearing hole 61 for supporting the lower part of the pivot 40 is formed.

A cam body 62 is attached to the output shaft 60 of the swinging electric motor 2, and a shaft 63 is formed on the upper surface of the cam body 62 at the extension of the output shaft 60.
63 is pivotally supported by a bearing portion 64 formed on the inner surface of the base 3. One end of a swing link 65 is fitted and supported on the lower circular portion 66 of the cam body 62. A collar is formed on the circular portion 66, and the collar and the mounting plate 59
The swing link 65 is sandwiched between and and is rotatably supported. The center of the circular portion 66 is formed so as to be offset from the center of rotation of the output shaft 60, so that the circular portion 66 rotates eccentrically.

In the bearing hole 61 of the mounting plate 59, a cylindrical shaft 69 of a rotating body 68 having a projection 67 for pivotally supporting the other end of the swing link 65 formed on the outer peripheral portion is pivotally supported. A clutch body 96 having an insertion hole 95 for the pivot 40 is fitted on the rotary body 68. The pivot 40 is, as shown in FIG.
It is inserted through the insertion hole 95 of the clutch body 96 and the cylinder shaft 69 of the rotating body 68, and protrudes from the lower surface of the mounting plate 59 together with the cylinder shaft 69.

The pin body 97, which is inserted from the side of the clutch body 96, has its tip inserted into the engagement hole 98 of the pivot 40, and the clutch body 96 and the pivot 40
And rotate together. The rotating body 68 is formed with a recess 101 for accommodating the engagement / disengagement body 100 which is biased outward by a spring 99, and the clutch body 96 is formed with a plurality of engagement portions 102 for engagement / disengagement of the engagement / disengagement 100. . When the engagement / disengagement body 100 engages with the engaging portion 102 of the clutch body 96, the rotating body 68 and the clutch body 96 rotate together, and rotate together with the pivot 40. Since the pin body 97 is located at the back of the base 3, it is difficult to screw it in with a jig. Therefore, the pin body 97 is simply inserted, and the retaining portion 103 is formed on the rotating body 68 as a retaining means. There is. When the swinging electric motor 2 rotates, the cam body 62 rotates, and the rotation of the pivotal support portion of the swinging link 65 moves toward and away from the rotating body 68. Therefore, the swinging link 65 rotates. The rotating body 68 is reciprocally rotated by a pushing force and a pulling force on the outer peripheral portion of the body 68. When the rotating body 68 reciprocally rotates, the pivot 40 is reciprocally rotated via the clutch body 96, and the reciprocating rotation of the rotation support base 4 causes the fan main body 6 to swing right and left. By engaging the fan main body 6 with a force for forcibly swinging to the left and right, the engaging portion 102 of the engaging and disengaging body 100
The center of the left and right swing can be changed by changing the position of engagement with.

The output shaft 60 and the pivot shaft 40 of the swing motor 2 are a single mounting plate.
At 59, the distance becomes stable, and the pivot 40 is attached to the shaft support hole 41.
Since it is pivotally supported at the lower part, twisting of the pivot 40 is prevented, and stable swinging is performed. The outer circumference of the cylinder shaft 69 of the rotating body 68 hanging from the mounting plate 59 is the brake spring 104.
Is inlaid.

In this structure, the rotating body 68 is pivotally supported on the mounting plate 59 by the cylinder shaft 69, but the rotating body 68 is pivotally supported on the pivot shaft 40 and the pivot shaft 40 is directly mounted on the mounting plate 59.
The bearing holes 61 of 59 may be pivotally supported. Further, when it is not necessary to change the swing center, the clutch body 96 is not necessary, and the rotating body 68 and the pivot 40 may be integrated by a pin body.

The electric motor support guard body is the rear guard body and the guard body is the front guard body, but they may be reversed.

(G) Effect of the Invention According to the present invention, since the support ring body that supports the outer rings of both guard bodies is mounted on and supported by the rotation support base, the ventilation resistance of the blower blades can be reduced, and the base and the rotation support base are The appearance is refreshed by forming a continuous surface and rotating.

[Brief description of drawings]

FIG. 1 shows the present invention, FIG. 1 is a side sectional view of a base portion, and FIG.
1 is a plan view taken along the line II-II of FIG. 1, FIG. 3 is an exploded sectional view of a base portion, FIG. 4 is an exploded perspective view of the same, and FIG. 5 is a sectional front view of a vertical angle adjusting device portion, FIG. 6 is the same exploded sectional view, FIG. 7 is the same exploded perspective view, FIG. 8 is the same sectional side view, FIG. 9 is a front view of the fan, FIG. 10 is the same side view, and FIG. 11 is an electric motor part. Fig. 12 is a side sectional view of Fig. 12, Fig. 12 is a cross-sectional plan view of the swing stop control switch portion, Fig. 13 is a front view of the central portion of the motor support guard body, and Fig. 14 is a front view of the rear cover body. 1 ... Fan, 2 ... Swing motor, 3 ... Base, 4 ...
… Rotary support, 5 …… Stand, 6 …… Fan mainly, 7
...... Pivot connection part, 8 ...... Support ring, 9,10 ...... Outer ring, 11 ...
… Motor support guard body, 12 …… Guard body, 13 …… Mounting part, 14 …… Electric motor, 16 …… Blower blade, 40 …… Axis, 41…
… Shaft support hole, 59… Mounting plate, 60… Output shaft, 61… Bearing hole, 62… Cam body, 63… Shaft, 64… Bearing part, 65… Swing link, 68… … Rotating body, 75 …… Shaft, 77 …… Depression angle adjusting plate, 85,86 …… Supporting part

Claims (1)

[Claims] 1. A pedestal in which a oscillating electric motor is installed, and a rotary support base which is pivotally supported on the pedestal so as to form a surface continuous with the upper surface of the pedestal, and which is reciprocally rotated left and right by the oscillating electric motor. And a support ring that is attached to the rotation support base with the elevation angle adjustable by a connecting part formed at the bottom, and an outer ring supported by the support ring, and a motor support equipped with an electric motor that drives the blower blades in the center An electric fan comprising a guard body and a guard body that supports an outer ring with a support ring and covers the blower blades with a power unit support guard body.