JP2000110776A - Variable oscillating angle mechanism of fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set an oscillating angle freely between 0 and the specified maximum angle. SOLUTION: An eccentric axis 6 is mounted eccentric from the rotation center on the end of a rotor 2 mounted on a main spindle 1. A clamp driving axis 3 is mounted on a disk 5 mounted on the eccentric axis 6 in such a position that it has the same eccentric distance from the center of the eccentric axis 6. A rotating disk 7 rotating along the external circumference of the rotor 2 is mounted so that the disk 5 and the rotating disk 7 are interlocked with each other by a gear-like interlocking mechanism. The rotor 2 and the rotating disk 7 are interlocked by a spring pressure mechanism or the like so that the rotor 2 and the rotating disk 7 may rotate together during normal oscillating movement and that they may rotate separately only when an oscillating angle is changed. When the rotating disk 7 is manually rotated and the clamp driving axis 3, integrated with the disk 5, rotates together and the distance between the center of the main spindle 1 and that of the clamp driving axis 3 can be adjusted between 0 and the specified maximum value. An oscillating angle therefore can be adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for changing the swing angle of a fan from 0 to a predetermined maximum angle.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional swinging mechanism of an electric fan has a clamp driving shaft 3 attached to an eccentric position of a rotating body 2 which rotates integrally with a main shaft 1, and a clamp driving shaft attached to a coaxial 3 with a clamp 4. The eccentric rotary motion of No. 3 is converted into a reciprocating motion by the clamp 4 to perform a swing motion. For this reason, the swing angle is constant and cannot be changed, and there is an inconvenience of blowing air to an unnecessary range when swinging.

[0003]

SUMMARY OF THE INVENTION The present invention makes it possible to change the swing angle of a fan so as to eliminate the conventional blow to an unnecessary range.

[0004]

In order to make the oscillating angle variable, the eccentric distance from the center of the main shaft 1 of the clamp drive shaft 3 eccentrically attached to the main shaft 1 of the conventional fan oscillating mechanism is variable. Need to be Therefore, a mechanism that can vary the eccentric distance from the main shaft 1 according to the present invention will be described below with reference to FIGS. An eccentric shaft 6 is attached to a position eccentric from the center of rotation on an end face of a rotating body 2 integrally rotating with the main shaft 1, and a circular body 5 is attached to the coaxial 6. The clamp drive shaft 3 is attached to the circular body 5 at the same eccentric distance from the center of the eccentric shaft 6 as described above.
Thus, when the circular body 5 is rotated, the center of the clamp driving shaft 3 draws a circle shown by 12 in FIG. 2, and the distance between the center of the main shaft 1 and the center of the clamp driving shaft 3 can be varied from 0 to a predetermined maximum distance. In order to rotate the circular body 5, a rotating ring 7 that rotates along the outer periphery of the rotating body 2 is attached, and the rotating ring 7 and the circular body 5 are interlockedly rotated by a gear-shaped mechanism or the like. Thus, by rotating the rotating ring 7, the distance between the center of the main shaft 1 and the center of the clamp driving shaft 3 can be changed. The rotating body 2 and the rotating ring 7 rotate together during a normal swing motion, and a mechanism that can separate and rotate only when the swing angle is changed is required. For this purpose, the rotating body 2 and the rotating ring 7 are mutually linked by a spring pressing force mechanism or the like. When changing the swing angle by this mechanism, the rotating ring 7
Can be rotated separately from the rotation of the rotating body 2 by manual rotation from the outside. When the rotating ring 7 is manually rotated by the above mechanism, the circular body 5 rotates, the eccentric distance from the rotation center of the main shaft 1 to the clamp drive shaft 3 can be changed from 0 to a predetermined maximum distance, and the swing angle is set to 0. To a predetermined maximum angle. Since the rotation speed of the main shaft 1 of the fan swing mechanism is slow, the swing angle can be changed by operating the rotating ring 7 even while the entire swing mechanism is rotating.

[0005]

FIG. 1 is a central sectional view of the mechanism of the present invention. FIG. 2 is a bottom view of the mechanism of the present invention. Figures 1 and 2
The rotation from the fan motor is transmitted to the main shaft 1, and except for the clamp 4, it rotates integrally with the main shaft 1 at normal times.
When changing the swing angle, the rotating ring 7 is manually rotated.
At this time, since the rotation between the rotating body 2 and the rotating ring 7 is linked by pressing with a spring, the rotating ring 7 is manually rotated, so that the linked between the rotating body 2 and the rotating ring 7 can be separated from the rotation center of the main shaft 1. The eccentric distance to the clamp drive shaft 3 can be changed. The clamp 4 converts the rotation of the clamp drive shaft 3 into a reciprocating motion to cause the fan to swing. The interlock between the circular body 5 and the rotating ring 7 is performed by meshing a gear-like shape attached to the outer periphery of the circular body 5 and a gear-like shape attached to the inside of the rotating ring 7. Between the rotating body 2 and the rotating ring 7, the spring holding screw 10, the spring 9, and the pin 8 push each other so as to rotate in conjunction with each other. The cover 11 is a fan motor part, and the right side corresponds to the inside and the left side corresponds to the outside. A part of the rotating ring 7 is put outside the cover 11 so that the rotating ring 7 can be manually rotated from the outside.

[0006]

According to the present invention, since the swing angle can be changed from 0 to a predetermined maximum angle, air is not blown to an unnecessary range at the time of swing.

[Brief description of the drawings]

FIG. 1 is a central sectional view of the mechanism of the present invention.

FIG. 2 is a bottom view of the mechanism of the present invention.

FIG. 3 shows a main body A, a main body side clamp fixing axis B, a motor support axis C, a motor section D, a wing section E, and a swing-off knob section F of a conventional fan. Also, the main shaft 1, the rotating body 2, the clamp drive shaft 3, and the clamp 4 of the swing mechanism are originally
Although it is placed inside the cover of the motor section D, it is shown outside the cover to make the explanation easy to understand.

FIG. 4 shows a cross-sectional view of a conventional fan swing mechanism.

FIG. 5 shows a bottom view of a conventional fan swing mechanism.

[Explanation of symbols]

Reference numeral 1 denotes a "spindle" which is rotated by a fan motor. Reference numeral 2 denotes a “rotating body” which rotates integrally with the main shaft 1. Reference numeral 3 denotes a “clamp drive shaft”, which rotates integrally with the circular body 5. Reference numeral 4 denotes a "clamp", and the body fixed shaft side is omitted in FIGS. Reference numeral 5 denotes a "circular body", which has a gear-shaped outer periphery and meshes with the internal gear-shaped shape of the rotary ring 7. Reference numeral 6 denotes an “eccentric shaft”, and the circular body 5 is fixed to the rotating body 2.
The eccentric distance from the center of the main shaft 1 to the center of the eccentric shaft 6 in the rotating body 2 is the same as the eccentric distance from the center of the eccentric shaft 6 to the center of the clamp drive shaft 3 in the circular body 5. Reference numeral 7 denotes a "rotating ring", which is an internal gear shape on the inner periphery and meshes with the gear shape of the circular body 5. Reference numeral 8 denotes a "pin" which presses the rotating body 2 and the rotating body 2 and the rotating ring 7 rotate together. When a rotating force exceeding the pressing force is applied to the rotating ring 7, the rotating body 2 is rotated separately. Reference numeral 9 denotes a “spring”, which presses the pin 8. Reference numeral 10 denotes a “spring holding screw”, which presses the spring 9. Reference numeral 11 denotes a “cover”, in which the right side is the inside and the left side is the outside. Reference numeral 12 denotes a rotation circle centered on the clamp drive shaft 3 when the main shaft 1 is fixed and the rotary ring 7 is rotated. Reference numeral 13 denotes a “pin hole” on the side surface of the rotating body 2, which is a blind hole for the pin 8.

Claims (1)

[Claims] An eccentric shaft is attached to a position eccentric from a center of rotation on an end face of a rotating body rotating integrally with a main shaft, and a circular body is attached to a coaxial. The clamp drive shaft 3 is attached to the circular body 5 at the same eccentric distance from the center of the eccentric shaft 6 as described above. Rotating body 2
Is provided with a rotating ring 7 that rotates along its outer periphery. The rotating ring 7 and the circular body 5 are interlockedly rotated by a structure such as a gear shape attached to both. The rotating body 2 and the rotating ring 7 are linked to each other by a spring pressing structure or the like. During normal swinging motion with the above fan swinging mechanism, the main shaft 1 and the whole mechanism rotate integrally,
When changing the swing angle, the rotating body 7 is manually rotated to rotate the circular body 5 and the eccentric distance from the rotation center of the main shaft 1 to the clamp driving shaft 3 can be changed and set from 0 to a predetermined maximum distance. A mechanism in which the swing angle can be set to change from 0 to a predetermined maximum angle.