JP2001012382A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts. SOLUTION: The motor covers 9, 10 of a motor 7 are penetrated to the annular part of a support member 16 for fixing the motor 7 for rotating and driving a blade 8. A front side case member 27 out of a pair of case members 27, 28 for coveting these motor covers 9, 10, a support member 16 and the motor covers 9, 10 are fixed in a lump by a common screw 51. A shaft which is the rotation center of the motor covers 9, 10 by an oscillation mechanism 5 is fixed on the support member 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan having a swing mechanism for continuously changing the direction of a blade.

[0002]

FIG. 7 shows an example of a conventional electric fan. In the figure, 101 is a column, 102
Is a blower supported above the column 101. The blower 102 is provided on a support base provided at the upper end of the support 101.
It is supported on the 103 via a swing mechanism 105. The blower 102 has a motor 108 covered by a pair of motor covers 106 and 107, and the motor 1
08 has a blade 109 which is driven to rotate. Also,
A front plate 110 is fixed to the front side of the motor cover 106 on the blade 109 side by screws 111.
The blade 109 is covered by a guard portion 112 attached to the blade.

Next, the configurations of the swing adjustment section 104 and the swing mechanism section 105 will be described. On the support 103,
A receiving base 117 is supported so as to be swingable about a shaft portion 116. Above the pedestal 117, the motor cover 106 is horizontally swingably supported by a shaft (not shown) coaxial with the shaft 116. Also, the cradle 11
A lever 119 is supported on the shaft 7 by a shaft 118 so as to be able to swing horizontally. This lever 119
Is held at a predetermined swing position with respect to the receiving table 117. Further, a front end of a link arm 120 is connected to a front end of the lever 119 by a shaft 121 so as to be horizontally swingable. Further, the rear motor cover 10
On the rear side of 7, a swing drive unit 122 composed of an electric motor or the like is provided.
Are supported by means such as screwing of the bracket 123. The swing drive unit 122 rotationally drives a gear 124 that protrudes downward. On the lower surface of the gear 124, a shaft portion 125 is provided at a position displaced from the center of rotation, and the rear end of the link arm 120 is swingably connected to the shaft portion 125. Therefore, when the gear 124 rotates, the link arm 1
Due to the regulation by 20, the motor covers 106 and 107, and further the blade 109 swing horizontally (swing motion) around the shaft portion 116. When the lever 119 is operated to swing with respect to the receiving base 117, the shaft portions 116 of the motor covers 106 and 107 and the link arm 1 are moved.
When the positional relationship between the 20 and the shaft 121 changes, the swing range of the blade 109 changes.

On the rear side of the motor cover 106, a starting capacitor 126 is provided. Further, the motor covers 106 and 107 including the swing mechanism 105 and the condenser 126 are covered by the front plate 110 and the rear case 127. Thereafter, the case 127 is fixed to the swing mechanism 105 with screws (not shown).

However, in the conventional fan, since the swing mechanism 105 and the condenser 126 are disposed so as to protrude to the rear of the motor 108 for rotating the blade 109, the blower 102 protrudes rearward. As a result, the rear portion of the blower 102 becomes a hindrance at the time of storage or the like, and there is a problem that appearance is poor. In addition, in the parts around the blower 102, the front plate 110 is
(1) and swing mechanism on the motor cover 107 on the rear side.
The 105 is fixed with screws and the swing mechanism 1
Since the rear case 127 was fixed with screws in 05, the number of parts for fixing increased, and the number of assembly steps also increased.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a fan capable of reducing the number of parts and the number of assembling steps.

[0007]

In the electric fan according to the present invention, the number of parts required for fixing the support member, the motor and the case member to each other is reduced.

In the electric fan according to the second aspect of the present invention, the number of parts is further reduced by fixing the shaft for swinging the head to the support member for fixing the motor.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the electric fan of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a support, and 2 denotes a blower supported above the support 1.
The blower 2 is supported via a swing adjustment unit 4 and a swing mechanism unit 5 on a support 3 provided at the upper end of the support column 1 so as to be able to turn up and down. The blower 2 has a motor 7 and blades 8 driven to rotate by the motor 7. The motor 7 is covered by a pair of front and rear motor covers 9 and 10. The motor covers 9 and 10 have flange portions 11 at their butted portions.
These flange portions 11 are fixed to each other by screws 12.

Reference numeral 16 denotes a support member which is a plate-like motor mounting plate made of a metal material or the like. The support member 16 supports the motor covers 9 and 10 at a portion of the swing mechanism 5 on the support column 1 side. Things. And the support member 16
Is formed integrally with a vertical annular portion 18 having an opening hole 17 inside, and a substantially horizontal lower piece 19 bent rearward from a lower end portion of the annular portion 18. The front portion of the lower piece portion 19 is a lower bulging portion 20 which is located lower than the rear portion. The annular portion 18 has a plurality of screw mounting holes 21 formed at upper and lower portions, respectively, and positioning fixing portions 22 formed of cutouts are formed at both left and right sides of the outer peripheral portion. The positions and numbers of the screw mounting holes 21 and the positioning and fixing portions 22 are not limited to those of the present embodiment, and can be set as appropriate. Further, the annular portion 18 is formed with a through hole 23 for avoiding the screw 12 of the motor cover 9, 10. On the other hand, the flanges 11 of these motor covers 9 and 10
A through hole 24 is formed in each of the screw holes 21 of the annular portion 18 so as to overlap with each other.

Reference numeral 26 denotes the support member 16 and the swing mechanism 5
The drive unit cover 26 includes a front case member 27 as a case member and a rear case member 28 as a case member. The front side of the front case member 27 is open,
The rear case member 28 has an open front surface that is abutted against the rear surface of the front case member 27.

In the front case member 27, a through hole 32 for passing the rotation output shaft 31 of the motor 7 is formed in the center of the front part. A plurality of substantially cylindrical screw mounting bosses 33 and a plurality of substantially cylindrical screw fastening bosses 34 are formed in a peripheral portion of the front case member 27 so as to project rearward from the front surface. Each screw mounting boss 33 is provided with the support member.
It is coaxially overlapped with each of the 16 screw mounting holes 21. Further, each screwing boss portion 34 is fitted to each positioning fixing portion 22 of the support member 16. Further, a male screw portion 35 is formed outside the front portion of the front case member 27.

On the other hand, in the peripheral portion inside the rear case member 28,
A plurality of substantially cylindrical screw mounting bosses 36 protruding forward.
Are formed. The screw mounting bosses 36 coaxially abut against the screw bosses 34 of the front case member 27, respectively. The left and right sides of the rear case member 28 are provided with a side wall 37 and a rib wall 38 which is formed integrally with the side wall 37 and has a substantially U-shape as viewed from the front. A box-shaped capacitor storage section 39 having an opening is formed. Further, a protrusion 40 extending in the front-rear direction is formed on the inner surface of the side wall portion 37 facing the inside of the capacitor housing portion 39. The distal end edge of the projection 40 is located on substantially the same plane as the base end of the rib wall portion 38 on the side wall portion 37 side. Further, on the upper surface of the rib wall portion 38, a cut groove portion 41 is formed which extends to the front side edge thereof.

A capacitor 46 for starting is housed in the capacitor housing 39. The protrusion 40 is provided so as to press the capacitor 46 while the side wall portion 37 is curved in a cylindrical curved shape. Further, the kerf portion 41 is for passing the lead wire 47 from the capacitor 46.

The outer shell of the rear motor cover 9 penetrates through the opening 17 of the annular portion 18 of the support member 16 from the front side, and the front surface of the annular portion 18 has a flange 11 of the motor cover 9. Is in contact. Then, the front case member 27
The screws 51 as fixing members inserted into the respective screw mounting bosses 33 of the motor cover 9 from the front side respectively.
Are screwed into the screw holes 21 of the support member 16 respectively. In this manner, the front case member 27, the motor covers 9, 10 and the support member 16 are collectively fixed to each other by the common screw 51. In the state where the front case member 27 and the support member 16 are fixed to each other,
The screw boss portions 34 of the front case member 27 are fitted into the respective positioning and fixing portions 22 of the support member 16. Further, screws (not shown) as fixing members inserted into the respective screw mounting boss portions 36 of the rear case member 28 are screwed to the respective screw fixing boss portions 34 of the front case member 27, respectively. . Thereby, the rear case member 28 and the front case member 27
And are mutually fixed.

Further, an annular cap 53 is detachably screwed to the male screw portion 35 of the front case 27, whereby the guard portion 53 is detachably fixed to the front side of the front case 27. The guard portion 53 covers the blade 8 fixed to the rotation output shaft 31 of the motor 7.

Next, the structure of the swing mechanism 5 for continuously changing the axial direction of the blade 8 and the swing adjusting unit 4 for adjusting the axial change range of the blade 8 will be described. On the support 3, a support 57 is provided around a shaft 56.
Are supported horizontally and swingably. Above the pedestal 57, the support member 16 is horizontally and swingably supported together with the motor 7 and the like by a shaft portion 58 coaxial with the shaft portion 56. The shaft portion 58 is mounted on the lower bulging portion 20 of the support member 16 and supports the motor 7 and a part of the swing mechanism 5 at a right angle. Also, on the cradle 57,
A lever 60 is supported by the shaft portion 59 so as to be able to swing horizontally. The cradle 57 and the lever 60 constitute the swing adjustment portion 4. The lever 60 is held at a predetermined swing position with respect to the receiving table 57. The front end of the first link arm 61 is connected to the front end of the lever 60 by a shaft 62 so as to be horizontally swingable. Further, on the lower piece 19 of the support member 16, a swing drive unit 63 composed of an electric motor or the like is supported. The swing drive unit 63 has a rotation output shaft 64 protruding downward, and one end of a second link arm 65 is fixed to the rotation output shaft 64. The rear end of the first link arm 61 is connected to the other end of the second link arm 65 by a shaft 66 so as to be horizontally swingable.

As described above, the motor 7, the swing mechanism 5 and the swing adjuster 4 are arranged substantially linearly in the up-down direction so as to overlap each other when viewed from above.

Next, the operation of the above configuration will be described. In the swing mechanism 5, when the rotation output shaft 64 of the swing drive unit 63 rotates, the motor covers 9, 10 and further the blade 8 swing about the shaft 58 by the position regulation by the link arms 61, 65 ( Perform a swing motion). Thereby, the axial direction of the blade 8, that is, the blowing direction changes continuously. Then, operate the lever 60 to receive the lever 60
When it is swung with respect to 57, the shaft portions 58 of the motor covers 9 and 10
When the positional relationship between the first link arm 61 and the shaft portion 62 changes, the swing range of the blade 8 changes.

According to the configuration of the above embodiment, the motor 7, the swing mechanism 5 and the swing adjuster 4 are arranged substantially linearly in the vertical direction, and are arranged so as to overlap each other when viewed from above. Therefore, the motor 7 and the swing mechanism 5
The circumference can be made thin and compact. That is, since the blower 2 does not protrude backward as compared with the related art, the rear portion of the blower 2 does not interfere.

Further, the front case member is formed by a common screw 51.
Since the motor 27, the motor covers 9, 10 and the support member 16 are collectively fixed to each other, the number of components such as the screws 51 for fixing can be reduced. Further, since the outer shells of the motor covers 9 and 10 pass through and the shaft member 58 for swinging and the swinging drive unit 63 are also fixed to the support member 16 for fixing the motor 7, it is a single component. The motor 7 and the shaft 58 are attached to the support member 16.
Since the three types of components of the swing drive unit 63 are fixed, the total number of components can be further reduced. Thereby, the number of assembly steps is also reduced.

Further, since the condenser 46 is disposed so as to overlap with the motor 7 like the swing mechanism 5 and the like, the space can be saved. In this embodiment, the condenser 46 overlaps the motor 7 in the left-right direction, that is, when viewed from the side. However, the condenser 46 may overlap in the up-down direction. Further, when storing the capacitor 46 in the box-shaped capacitor storage portion 39 formed in the rear case member 28, a side wall portion forming one side surface of the capacitor storage portion 39
Since the projection 37 for holding the capacitor 46 is formed on the inner surface of the side wall portion 37 while the side wall portion 37 has a cylindrical shape,
The capacitor 46 can be firmly fixed to the capacitor storage section 39 regardless of the shape of the 37. Furthermore, since the cut groove portion 41 for inserting the lead wire 47 is formed in a part of the rib wall portion 38 forming the capacitor storage portion 39, the lead wire 47 does not become an obstacle, and the capacitor 46 is stored in the capacitor storage portion. It can be easily and reliably stored in the section 39.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made. For example,
A swing angle adjusting mechanism may be added to the swing adjustment unit 4 so that not only the swing range of the blower but also the swing angle of the blower can be freely selected up, down, left and right. In the above-described embodiment, the support member 16 is fixed to the flange portion 11 of the motor covers 9 and 10. However, the support member 16 may be fixed to another position of one or both of the motor covers 9 and 10. Further, in the above embodiment, the condenser 46 is connected to the rear case member.
Although housed in 28, it may be housed in the front case member 27.

[0024]

According to the first aspect of the present invention, the number of parts can be reduced and the number of assembly steps can be reduced.

Further, according to the second aspect of the present invention, the number of parts can be further reduced, and the number of assembly steps can be further reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a vicinity of a blower showing an embodiment of a fan of the present invention.

FIG. 2 is an exploded side view showing the vicinity of the blower.

FIG. 3 is a rear view of the front case member to which the support member is attached.

FIG. 4 is a rear view of the front case member.

FIG. 5 is a rear view of the support member.

FIG. 6 is a perspective view of the rear case member.

FIG. 7 is a cross-sectional view showing an example of a conventional fan near a blower.

[Explanation of symbols]

 5 Swing mechanism 7 Motor 8 Blade 9 Motor cover 10 Motor cover 16 Support member 27 Front case member (Case member) 28 Rear case member (Case member) 51 Screw (Fixing member) 58 Shaft

Claims (2)

[Claims] The motor cover includes a blade, a motor that drives the blade to rotate and is covered by a motor cover, and a swing mechanism that continuously changes the axial direction of the blade. An electric fan, wherein the fan is covered by a member, an outer shell of the case member is penetrated through a support member, and the support member, the motor cover, and the case member are collectively fixed by a common fixing member. 2. The electric fan according to claim 1, wherein a shaft portion that supports the motor and a swing mechanism portion or the motor at right angles is fixed to the support member.