JPH01224496A - Electric fan - Google Patents

Abstract

PURPOSE:To reduce the ventilation resistance of a fan blade and simplify the configuration of an electric fan by supporting a supporting ring which supports two guard-outer rings as the ring is installed on a rotational support base and rotating the rotational support base as a continuous face is formed on a base to the rotational base. CONSTITUTION:An electric fan comprises a base 3 and a rotational support base 4. An electric fan-stand 5 is formed into a semi-spherical shape on its appearance. A continuous face is formed on the outer surface of the base 3 to that of the rotational support base 4. The electric fan comprises a supporting ring 8, electric motor-supporting guards 11 and 12 built by fitting outer rings 9 and 10 in the supporting ring 8, an electric motor and a fan blade. Accordingly, the ventilation resistance of the fan blade is reduced and the configuration of the electric fan is simplified.

Description

[Detailed description of the invention] b) Industrial application field The present invention relates to an electric fan that is placed on a desk or floor.

(b) Prior art As a technology prior to the present invention, Japanese Patent Application Laid-open No. 191697/1983
There is an electric fan described in the publication. The electric fan is supported by a rotating support base that swings left and right to adjust the angle of elevation at the lower part of an L-shaped support that supports an electric motor that drives the blower blades on the upper part. For the front and rear guards that cover the blower blades, the center part of the rear guard is 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) Problems to be Solved by the Invention In the conventional technology, a support is required to support the electric motor and the front and rear guards on a rotating support, which complicates the structure and the support is located on the suction side of the blower blade. This creates ventilation resistance.

The technical object of the present invention is to provide an electric fan that has a reduced number of parts, a simplified structure, and reduced blowing resistance.

(d) Means for Solving the Problems The present invention includes a base in which a swinging motor is installed, the swinging motor is pivoted to the base so as to form a continuous surface with the top surface of the base, and the swinging motor is used to rotate the left and right sides. A rotating support base that can be rotated back and forth, a support ring that is attached to the rotation support with a connecting part formed at the bottom so that the angle of elevation can be adjusted freely, and an outer ring that is supported by the support ring, and a blower blade in the center. This problem is solved by means of forming a motor support guard body equipped with an electric motor that drives the power supply unit, and a guard body that supports the outer ring with a support ring body and displays the blower blades with the power supply support guard body. It is.

The rotation support and the base form a continuous surface, and the structure is such that if the upper surface of the base is flat, it forms a circular recess, the rotation support can be shaped like a disk, or the base can be shaped like a truncated cone or a circular recess. If the structure is a truncated pyramid, such as a truncated pyramid, the rotation support pedestal may be formed into a cone such as a cone or a pyramid, which overlaps the truncated pyramid, so that the entire structure is a pyramid.

The guard body may be formed from FI4 wire or from synthetic resin.

The support ring body can be formed into a circular shape, a quadrangular shape, etc., and the shape of the guard body is also formed appropriately according to the shape of the support ring body.

(E) Function In the present invention, the electric motor is supported by the motor support guard body, and both guards are connected by the support ring body, so that the electric motor is supported by the support ring body via the guard body.

By supporting the -C motor on the support ring, there is no need to form members with large resistance on the suction side and the Suita side of the blower blade.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be specifically explained based on the illustrated electric fan 1.

2g9 is a front view of the electric fan 1, and FIG. 10 is a right side view of the electric fan 1. The electric fan 1 has a base 3 in which an electric motor 2 for oscillation is installed, and a rotation support 4 that is pivoted to the base 3 so as to be rotated back and forth from side to side by the electric motor 2 for oscillation. A fan stand 5 is formed by the rotating support base 4. The electric fan stand 5 has a hemispherical appearance, and the base 3
The outer surface (upper surface) of the rotary support base 4 and the outer surface (upper surface) of the rotary support base 4 form a continuous surface.

A fan main body 6 is supported on the rotary support base 4 so that its elevation angle can be adjusted. The fan main body 6 includes a support ring body 8 having a pivot connecting portion 7 formed at its lower part, a motor support guard body 11 and a guard body 12, which can be completely attached by fitting outer rings 9 and 10 to the support ring body 8.
It has an exercise machine 14 fixed to a mounting part 13 in the center of a motor support girt body 11, and a blower blade 16 mounted on a rotating shaft 15 of an electric motor 14.

The support ring body 8 is made of synthetic resin and has a guard body 11 on its inner surface.
．． A plurality of protrusions are formed in which the twelve outer rings 9 and 10 are fitted and held. An elastic piece 17 is formed at the lower part 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, has an ornament 18 in the center, and a large number of wire rods 19 are installed between the ornament 18 and the outer ring 10. The motor support guard body 11 corresponds to a rear guard body, and the mounting portion 13 is formed of a sheet metal plate as shown in FIG. A large number of wire rods 20 are installed between the attachment portion 13 and the outer ring 9.

The electric motor 14 is fixed to the mounting part 13 and supported by the support ring body 8 via the guard body 11, so that there are wire rods 19 and 20 with low blow resistance on the suction side and the blow out side of the blower blades 16, unlike the conventional Air blowing efficiency is improved compared to an electric fan that has a support on the suction side.

The electric jsk 14 is fixed to the inner surface of the mounting portion 13, and the electric motor 14 and the outer surface of the mounting portion 13 are covered with integrated front and rear covers 21 and 22. A ventilation hole 23 is formed on the lower surface side of the integrated front cover 21. A handle recess 24 is formed in the upper part of the rear cover unit 22. The handle recess 24 is inserted so as to approximately fit into the insertion hole 25 formed in the mounting part 13, and is positioned so as to cover the upper part of the electric motor 14. A ventilation hole 26 is formed in the handle recess 24 on the electric motor 14 side. While the electric motor 14 is in operation, air flows through the ventilation holes 26 1 around the motor 14 and from the ventilation holes 26 toward the ventilation blades 16 .

N. When the motor Wk 14 stops, the heat causes the air flowing in from the vent 23 to rise around the motor 14 and reach the vent 2.
6 through the handle recess 24. Handle recess 24
The strength is improved by fitting into the insertion hole 25 of the attachment part 13. A switch 27 is fixed to the lower part of the mounting portion 13 for controlling the stoppage of the electric swinging B&14. Rear cover integrated 22
A through hole 28 from which the operating portion of the switch 27 projects is formed in the through hole 28, and elastic locking pieces 29 for connecting to the mounting portion 13 are formed on both sides of the hole 28. A tab 30 is formed around the rear cover unit 22 to abut on the periphery of the mounting portion 13 for positioning. The rear cover unit 22 is positioned and temporarily fixed by ribs 30 and elastic locking pieces 29, and securely fixed by screws 31.

Electric cord 32 connected to electric motor 14 and switch 27
is wired along a wire rod 20 that extends from the mounting portion 13 toward the pivot connection portion 7 below, and is housed in a guide body 33 that elastically engages with the wire rod 20. The upper part of the guide body 33 can be fully engaged with the rear cover unit 22, and the lower part can be elastically engaged with the pivot connection part 7.

Next, the elevation angle IT tank structure of the fan main body 6 will be explained based on FIGS. 5 to 8.

A pivot shaft 40 is vertically disposed at the center of the rotary support base 4, and the pivot shaft 40 is formed of a metallic material. The pivot 40 can be integrated by inserting it into the rotary support base 4 when it is molded from synthetic resin. The rotation support table 4 is rotatably supported by the base 3 by inserting a pivot 40 into a shaft support hole 41 formed in the center of the base 3. The shaft support hole 41 is formed by an insertion hole 42 formed in the base 3 and a bearing body 44 having a flange 43 inserted into the insertion hole 42. The bearing body 44 is positioned with respect to the insertion hole 42 by placing the flange 43 around the insertion hole 42, and rotation is prevented by fitting a lip 45 formed on the lower surface of the flange 43 into the recess 46 around the insertion hole 42. The zero-rotation support base 4 is positioned by insert-molding the pivot 40 by placing the lower end of the boss on the flange 43 of the bearing body 44. A pair of recesses 48 , which are formed in the center of the rotary support base 4 and on the left and right sides of the rotary support base 4 around the communication hole 47 to the pivot shaft 40 , are provided for pivotally supporting the pivot connecting portion 7 of the support ring 8 . 49 is formed.

The pivot connection part 7 formed at the lower part 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 hanging walls 73 and 74, and a lower opening is formed. It is shaped like a box. A shaft support hole 76 is formed in the hanging pieces 71 and 72, into which the shaft body 75 is inserted. The shaft body 75 is formed of a bolt having a threaded portion at its tip. Hanging piece 71.
A U-shaped elevation angle adjustment plate 77 is fixed to the support ring 8 between the holes 72 and 72 with a screw 78, and a hanging projecting piece 79 of the adjustment plate 77 hangs down.
．． 80 is located at a constant distance from the hanging pieces 71 and 72. The hanging projection piece 79.80 has a shaft support hole 8 through which the shaft body 75 is inserted.
1.82. Between the hanging piece 71 and the hanging protrusion piece 79 and between the hanging piece 72 and the hanging protrusion piece 80, a support part 85.86 in which a shaft support hole 83.84 of the shaft body 75 is formed is clamped and pivoted. The support portions 85 and 86 may be formed integrally with the base 3, but in this structure, they are formed as separate members. Hanging piece 71.
The shaft body 75 passing through the support portions 85 and 86 and the hanging protrusions 79 and 80 is prevented from being removed.

In this structure, a nut 87 is screwed into the protruding end of the shaft 75, and a screw hole 88 and a protrusion 89 are formed at the lower end of a support portion 85.86 that also protrudes from the nut 87. I can do it. A groove 50 is formed inside the communication hole 47 of the recess 48, 49 of the rotary support base 4, through which the end of the shaft 75 can be guided. The bottoms of the recesses 4B and 49 are formed with a through hole 51 into which the protrusion 89 of the support portion 85, 86 fits, and an insertion hole 53 into which the screw 52 inserted into the screw hole 88 is inserted. By fixing the support parts 85 and 86 to the rotation support base 4, the shaft body 75
The support ring 8 is rotatably supported in the elevation angle adjustment direction.

A torsion spring 90 is housed in the support portion 85 .
0 is locked to the support portion 85, and the other end is locked to the hanging protrusion 79 of the adjustment plate 77. A torsion spring 9 is used to balance the force of the fan main body 6 to further rotate in the adjustment direction due to its own weight when adjusting the elevation angle of the support ring 8.
0 is assigned to the support ring 8.

A shaft support hole 82 is formed as a burring hole in the hanging protrusion 80 of the adjustment plate 77, and a braking plate 91 that slides in pressure contact with the surface of the hanging protrusion 80 on the side of the support part 86 is caulked through the burring hole. , is centrally supported. A locking protrusion 92 formed on the brake plate 91 engages with the support portion 86 . Since the brake plate 91 is engaged with the support portion 86, the fan main body 6 is held at a position adjusted by m when the elevation angle IR of the support ring 8 is adjusted.

Although the elevation angle 11 in this structure is formed by a torsion spring 90 and a brake plate 91, it may be formed by a pole stopper or the like.

By forming the pivot connecting part 7 with a pair of hanging pieces 71 and 72, the width of the part that pivots the elevation angle can be expanded,
The rotation is stable without sideways movement, and the force applied to the pivot can be dispersed. Furthermore, by making the elevation angle adjustment plate 77 U-shaped, the hanging pieces 71, 72 and the lower part of the support ring 8 can be reinforced. By being able to incorporate the support parts 85 and 88 into the pivot connection part 7 in advance as separate members,
It becomes easy to assemble the elevation angle adjusting body.

Since the front and rear edges of the adjustment plate 77 are in contact with the inner surfaces of the hanging walls 73 and 74, when the elevation angle is maximized as shown in FIG. ,
The deflection of the hanging walls 73, 74 at this time is prevented, and the hanging walls 73, 74 become white due to long-term use and excessive pressure contact.
Damage can be prevented.

Next, a structure for swinging the main body 6 of the electric fan from side to side will be explained based on FIGS. 1 to 4.

The bottom surface of the base 3 is open, and a back plate 55 has rubber feet formed thereon.
Close at. A switch body 56 for controlling the rotation of the electric motor 14 is mounted inside the rear part of the base 3. The switch body 56 uses a rotary switch, and also includes a timer mechanism for controlling time. Since the switch body 56 is mounted on the inclined inner surface of the base 3, the switch body 56 is fixed to a bent support plate 106 with screws 105, and the support plate 106 is fixed to the boss 108 of the base 3 with screws 107. It is fixed at Since the support plate 106 is bent, the support plate 106 bends so as to be pushed into the base 3 when a force to press the switch body 56 is applied, so the lower part of the switch body 56 is formed on the back plate 55. It is supported by a support part 109. The support portion 109 protrudes downward, and its protrusion amount is equal to the back plate 55.
The rubber feet are formed lower than the rubber feet formed in FIG.

The electric cord 32 is inserted into the pivot 40 through the insertion hole 47, drawn into the base 3, connected to the oscillating motor 2 and the switch body 56, and then pulled out from the bottom of the base 3.

Connect the pulled-out electric hood to a commercial power source.

Attach the mounting plate 59 to the boss 57 vertically installed in the base 3 with screws 58.
to be fixed. The mounting plate 59 is fixed without wobbling so as to form a space between it and the inner surface of the upper part of the base 3 to accommodate the vibration transmission mechanism. The oscillating motor 2 is fixed to one side of the mounting plate 59 with a screw so that the output shaft 60 projects from the top surface. A bearing hole 61 for pivotally supporting the lower part of the pivot 40 is formed on the other side of the mounting plate 59.

A cam body 62 is attached to the output shaft 60 of the oscillating electric motor 2,
A shaft 63 is formed on the upper surface of the cam body 62 that is an extension of the output shaft 60, and the shaft 63 is pivotally supported by a bearing portion 64 formed on the inner surface of the base 3. A flange is formed in the 0-circular portion 66 which fits and pivots one end of the oscillating link 65 into the lower circular portion 66 of the cam body 62, and the σ oscillating link 65 is sandwiched between the flange and the mounting plate 59. The center of the circular part 66 that is rotatably supported is the output shaft 60.
By forming the circular portion 66 offset from the center of rotation, the circular portion 66 rotates eccentrically.

The bearing hole 61 of the mounting plate 59 has a cylindrical shaft 69 of a rotating body 68, which has a protrusion 67 formed on its outer periphery to pivotally support the other end of the oscillating link 65. A clutch body 96 having 40 insertion holes 95 is fitted therein. axis 40
As shown in FIG. 1, it is inserted through the insertion hole 95 of the clutch body 96 and the cylindrical shaft 69 of the rotating body 68, and protrudes from the lower surface of the mounting plate 59 together with the cylindrical shaft 69.

The tip of the pin body 97 inserted from the side of the clutch body 96 is inserted into the engagement hole 98 of the pivot shaft 40, and the pin body 97 is inserted from the side of the clutch body 96.
A recess 101 is formed in the zero-rotating body 68, which rotates together with the pivot 40, and a recess 101 is formed in the clamp body 96. A plurality of engaging portions 102 are formed to be disengaged. clutch body 9
By engaging the engaging and disengaging body 100 with the engaging portion 102 of 6, the rotary body 68 and the clutch body 96 rotate together, and the pivot shaft 40
It will rotate as one. Since the pin body 97 is located at the back of the base 3, it is difficult to screw it in with a jig.
A removal stop portion 103 is formed at 8.

When the oscillating electric motor 2 rotates, the cam body 62 rotates, and the rotation of the pivot portion of the oscillating link 65 is a movement toward and away from the rotating body 68, so that the cam body 62 rotates via the oscillating link 65. body 68
When the rotating body 68 rotates back and forth, the clutch body 96
The pivot shaft 40 is reciprocally rotated via the rotary support base 4, and the fan main body 6 is swung left and right by the reciprocating rotation of the rotary support base 4. By applying a force to force the fan main body 6 to swing left and right, the engagement position of the engaging and detaching body 100 with the engaging portion 102 can be changed, and the center of the left and right swing can be changed.

The distance between the output shaft 60 of the oscillating electric motor 2 and the pivot 40 is stabilized by a single mounting plate 59, and the pivot 40 is supported by the pivot hole 41 and the lower part. Twisting is prevented and stable swinging is possible. Mounting plate 59
A brake spring 104 is fitted onto the outer periphery of the cylindrical shaft 69 of the rotating body 68, which is more hanging down.

In this structure, the rotating body 68 is pivotally supported on the mounting plate 59 by a cylindrical shaft 69, but the rotating body 68 is pivotally supported on the pivot @40, and the pivot 40 is directly supported in the bearing hole 61 of the mounting plate 59. Good too.

Further, if the center of oscillation does not need to be changed, the clutch body 96 is not necessary, and the rotating body 68 and the pivot shaft 40 may be integrated with a pin body.

Note that although the motor supporting guard body is the rear guard body and the guard body is the front guard body, the reverse may be used.

(g) Effects of the Invention In the present invention, the support rings that support the outer rings of both guard bodies are attached to and supported by the rotating support base, so that the ventilation resistance of the air blowing blades can be reduced. By forming a continuous surface and rotating, the appearance looks like sinokiri.

[Brief explanation of the drawing]

The figures show the present invention; FIG. 1 is a side sectional view of the base portion;
The figure is a plan view taken along ■-■ in Figure 1, Figure 3 is an exploded sectional view of the base, Figure 4 is an exploded perspective view of the same, Figure 5 is a sectional front view of the elevation angle adjustment device, Fig. 6 is an exploded sectional view, Fig. 7 is an exploded perspective view, Fig. 8 is a sectional side view, and Fig. 9 is an exploded sectional view.
The figure is a front view of the electric fan, Figure 10 is a side view, Figure 11 is a side sectional view of the electric motor part, Figure 12 is a sectional plan view of the head vibration stop control switch part, and Figure 13 is a motor support guard. A front view of the central part of the body, and FIG. 14 is a front view of the rear cover integrated. 1... Electric fan, 2... Oscillating electric motor, 3... Base, 4... Rotating support base, 5... Stand, 6... Fan main body, 7... Pivotal connection Part, 8... Support ring body, 9
．． 10... Outer ring, 11... Motor support guard body, 1
DESCRIPTION OF SYMBOLS 2... Guard body, 13... Mounting part, 14... Electric motor, 16... Air blower, 40... Pivot, 41...
Shaft support hole, 59...Mounting plate, 60...Output shaft, 61
... Bearing hole, 62 ... Cam body, 63 ... Shaft, 64
...Bearing part, 65... Oscillating link, 68... Rotating body, 75... Shaft body, 77... Elevation angle adjustment plate, 85
．． 86...Support part

Claims (1)

[Claims] 1. A base equipped with an electric motor for oscillation, a rotating support that is pivoted to the base so as to form a continuous surface with the top surface of the base, and is rotated back and forth from side to side by the electric motor for oscillation, and a lower part. a support ring body that is attached to a rotary support stand so that the angle of elevation can be adjusted through a connecting part formed in the body; An electric fan comprising a guard body that supports an outer ring with a support ring body, and covers a blower blade with a power supply support guard body.