KR970005780Y1 - Air fan blow direction control device - Google Patents

Abstract

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Description

Fan direction control device

1 is an exploded perspective view showing the configuration of the wind direction control device of the fan according to the present invention

2 is a cross-sectional view of the assembly state of the present device

3 is a plan view of the excerpts showing the operation of the device

* Description of the symbols for the main parts of the drawings *

1: motor 2: up and down moving body

10 power transmission means 11: worm

12: worm wheel 13: power transmission shaft

13a: power transmission gear 14: lower clutch member

15: upper clutch member 16: spring

17: cap 18: mode conversion wire

19: operating lever 20: rotating gear

21: gear housing 30: swing lever

40: rotation angle adjustment means 41: link

41a: rack portion 42: adjusting rod

42a: pinion portion 50: position fixing means

The present invention relates to a wind direction control device of the fan that enables more various wind direction control by adjusting the rotational rotation angle of the fan head to an arbitrary angle.

More specifically, by selecting and rotating the left and right turning angles of the fan head to any angle, for example, any of the range of 0 ° to 180 °, the wind direction is varied to improve the efficiency of using the fan. It relates to a wind direction control device of the fan.

Conventionally known wind direction control device of the fan is configured so that the head fixed to the rotating material on the upper portion of the fan body to rotate only one rotation angle (typically 90 ° or 180 °). Thus, for example, in the case of a fan having a wind direction control device that rotates at a 180 ° turning radius, if there are many people around the fan, the head of the fan rotates at an angle of 180 ° so that a plurality of people may wind at regular intervals. There is an advantage that you can feel cool in common, but even if there are two or three people, the head of the fan keeps the rotation angle of 180 ° and rotates so that the wind blows to the place where there are no people. there was. Utility Notice

The present invention allows the right and left rotation angle of the fan head to be adjusted to an arbitrary angle so that the wind direction is appropriately adjusted according to the number of people and the number of people, for example, when the number of rotations of the head is large or small when the number of users is large. The main purpose of the present invention is to provide a wind direction control device of the fan, which aims at the efficiency of using the fan by adjusting the rotation angle of the head small.

Another object of the present invention is to provide an apparatus for adjusting the wind direction of a fan whose structure is simple, achieves reliable operation, and makes manufacturing cost low.

In order to achieve the object of the present invention as described above, in configuring a device for adjusting the wind direction by rotating the head of the fan left and right, a motor as a drive source, power transmission means for reducing the power of the motor and transmitting the; A rotating gear that rotates in conjunction with a power transmission means, a swinging lever for rotating the head from side to side while oscillating with the rotation of the rotational gear, and a rotation angle for adjusting the left and right rotational angles of the head by the swinging lever. Provided is a wind direction control device of a fan, characterized in that it comprises a means.

The motor is configured by installing a fan driving motor, or a separate motor.

The power transmission means includes a worm coupled to a motor shaft, a worm wheel that rotates in engagement with the worm, and a power transmission gear that is disposed perpendicular to the motor shaft to support the worm wheel and engages with the rotation gear. It is composed of a transmission shaft and the power transmission shaft is configured to clutch the power of the motor in the stop mode by selectively controlling the power of the motor according to the head rotation mode and the stop mode of the fan. The clutch means includes a lower clutch member coupled to the worm wheel of the power transmission shaft to rotate, an upper clutch member selectively coupled to the lower clutch member and integrally fixed to the power transmission shaft, and downwardly elastically supporting the upper clutch member. It consists of a spring and an operating lever which is hinged to one side of the cap supporting the spring and moves the upper clutch member in the axial direction while rotating in conjunction with the mode conversion wire to bind the upper and lower clutch members.

The rotating gear is integrally provided with a connecting portion having a through hole at a lower portion of the center, and is mounted on a gear housing fixed to the rear end of the motor. The gear housing is dually formed as a rotating gear mounting portion and a power transmission shaft mounting portion. do. The rotation angle adjusting means is installed through the through hole formed in the connecting portion of the rotating gear with one end supported on the swing lever, and one side of the link formed with a rack for variable length, and through the connecting portion of the rotating gear up and down The upper part is installed to protrude to the upper part of the head and the lower part is formed with a pinion which is engaged with the rack part of the link is composed of a control rod for varying the length of the link. On the other hand, the present invention is configured to include a position fixing means for maintaining a fixed distance between the center of the rotating gear by the adjustment rod and the link connecting portion of the swing lever. The position fixing means includes a plurality of fixing grooves formed on the opposite side of the rack portion of the link, at least one ball inserted and fixed in the fixing groove, a spring for elastically supporting the ball, and the ball and the spring built therein. And a holding member fastened to the supporting member. An adjustment knob having an indicator portion is forcibly fit and coupled to an upper portion of the adjustment rod, and a scale is formed on the head surface around the adjustment knob to configure accuracy of rotation angle adjustment. In addition, the present invention is an essential condition of operation so that the distance from the head fixing point to the center of the rotating gear and the length of the swing lever are equal, and the maximum variable length of the link by the adjusting rod is equal to the distance from the head fixing point to the swing lever fixed end. It is configured by installing a stopper for supporting the link not to exceed the maximum variable length.

Hereinafter, the wind direction control device of the fan according to the present invention as described above will be described in more detail based on the accompanying drawings.

1 is an exploded perspective view showing the configuration of the device of the present invention, Figure 2 is a cross-sectional view of the assembled state of the device of the present invention, Figure 3 is a plan view of the main portion extract showing the action of the device of the present invention.

As shown, the present invention is a motor (1) as a drive source, a power transmission means 10 for decelerating and transmitting the power of the motor (1), and a rotating gear that rotates in conjunction with the power transmission means (10). 20, a swing lever 30 for rotating the head from side to side while swinging in conjunction with the rotation of the rotation gear 20, and a rotation for adjusting the left and right pivot angles of the head by the swing lever 30. The angle adjusting means 40 is configured.

In other words, the present invention, in addition to the general structure for rotating the left and right rotational movement of the head coupled to the up and down moving body 2 of the fan main body by using the motor (1) constituting the head as a drive source, the rotation angle adjusting means 40 By providing a bar is configured to adjust the left and right pivot angle to any angle, looking at the detailed configuration as follows.

The motor 1 is assembled to rotate in both directions to the vertical moving body 2 which is hinged to the upper and lower sides of the upper part of the fan main body so as to constitute the head of the fan. A fan (not shown) is coupled to the shaft 1a of the motor 1 to generate wind while rotating at a high speed by the motor 1. In a conventional fan, the wind direction control device is configured to drive the motor 1 as a driving source. Therefore, there is a need for a configuration of a mechanical element, that is, a power transmission means 10, which reduces the high speed rotational force of the motor 1 and converts it into a rotational force centered on the vertical axis required for operation.

The power transmission means 10 includes a worm 11 coupled to the shaft 1a of the motor 1, a worm wheel 12 that rotates in engagement with the worm 11, and the shaft 1a of the motor 1. The fan is disposed in the power transmission shaft 13 and the power transmission shaft 13, which is disposed perpendicular to the worm wheel 12 and integrally provided with a power transmission gear 13a engaged with the rotation gear 20. It consists of a clutch means for selectively intercepting the power of the motor 1 in accordance with the head rotation mode and the stop mode of the motor to stop the power transmission of the motor 1 in the stop mode.

The worm wheel 12 is idly coupled to the power transmission shaft 13 is selectively coupled to the power transmission shaft 13 by a clutch means. That is, in the head rotation mode, the worm wheel 12 and the power transmission shaft 13 are integrally rotated so that the power of the motor 1 is transmitted to the rotation gear 20, and in the stop mode, the worm wheel 12 is There is no power transmission by idling at the power transmission shaft 13. Therefore, the power of the motor 1 is transmitted only when the rotation mode is selected so that the head rotates left and right.

The clutch means for selectively clamping power in this way is coupled to the lower clutch member 14 and rotated to the worm wheel 12 of the power transmission shaft 13, and selectively coupled to the lower clutch member 14 to transmit power. On one side of the upper clutch member 15 integrally fixed to the shaft 13, a spring 16 for supporting the upper clutch member 15 downwardly and a cap 17 for supporting the spring 16; It is composed of an operating lever 19 which is hinged and moves the upper clutch member 15 in the axial direction while rotating in conjunction with the mode conversion wire 18 to bind the upper and lower clutch members 14 and 15 together. In the above clutch means, the upper clutch member 15 is elastically supported downward by the spring 16, but is maintained in a raised state by the operating lever 19. Therefore, the upper and lower clutch members 14 and 15 are detached from each other, and the power of the motor 1 is transmitted only to the worm wheel 12 to idle. When changing from the stop mode to the rotation mode, the operation lever 19 is rotated at a predetermined angle by the operation of the mode conversion wire 18, so that the upper clutch member 15 is applied to the elasticity of the spring 16. It moves downward and engages with the lower clutch member 14. As a result, the power of the motor 1 is transmitted in the order of the worm wheel 12, the lower clutch member 14, the upper clutch member 15, and the power transmission shaft 13, and the power transmission gear of the power transmission shaft 13. The rotating gear 20 meshed with 13a rotates. Here, the lower clutch member 14 has two balls 14b and 14c supported by semi-circular leaf springs 14a inserted into grooves 12a and 12b formed in the worm wheel 12. It is coupled in a state so as to rotate integrally with the worm wheel 12. In addition, the upper clutch member 15 has fixing grooves 15a and 15b having both ends of the pin 13-1 passing through the pin hole 13b of the power transmission shaft 13 at the inner diameter of the upper clutch member 15. It is coupled by being supported by the free movement in the axial direction and is constrained in the radial direction to rotate integrally with the power transmission shaft (13). On the other hand, the upper portion of the upper clutch member 15, the spring 16 is resumed on the power transmission shaft 13, the upper portion of the cap 17 is covered with a square hole formed on one side of the cap 17 ( One end of the operating lever 19 is inserted into 17a) to support the upper clutch member 15 upward.

The other end of the operation lever 19 is connected to the mode conversion wire 18, the middle portion of which is pinned to one side of the cap 17, while rotating in conjunction with the mode conversion wire 18 at a predetermined angle, the upper clutch member 15 is selectively connected to the lower clutch member 14 to interrupt the power of the motor.

In this structure, the power of the motor 1 is firstly decelerated by the worm 11 and the worm wheel 12 and is converted in the vertical direction of the motor. In the process of being transmitted to the rotating gear 20 in 13a, it is secondarily decelerated and transmitted at an appropriate number of revolutions. Such power deceleration of the motor 1 is achieved by a gear ratio which is a common principle.

The rotation gear 20 rotates through the power transmission path as described above, and the swing lever 30 oscillates at a predetermined angle in association with the rotation of the rotation gear 20. The movement is rotated from side to side while drawing a certain trajectory. Here, the rotation gear 20 is mounted to the gear housing 21 integrally formed at the rear end of the motor 1, the connection portion 22 is integrally formed at the bottom. The gear housing 21 has a structure in which the rotating gear 20 mounting portion and the power transmission shaft 13 mounting portion are integrally formed. One end of the swing lever 30 is connected to a fixed end 3 adjacent to the head fixing part of the up and down moving body 2, and the other end is connected to the connection part 22 of the rotation gear 20 to form a four-section link structure. As a result, the swing lever 30 is oscillated about the fixed end 3. By the rocking motion of the rocking lever 30, the head makes a left and right rotational movement about the pivot point (a portion indicated in the figure) of the up and down moving body 2.

On the other hand, the rotation angle adjusting means 40 is to adjust the left and right rotation angle of the head to rotate left and right at an arbitrary angle to vary the wind direction control range, the swing lever 30 and the rotating gear 20 ) Connecting portion 22 of the rotary gear 20 by connecting the connection 22 using a separate link 41, and the control rod 42 that can vary the length of the link 41 to protrude to the outside of the head. It is configured to adjust the left and right pivot angle of the head by reducing the distance between the center and the linking portion 41 of the swing lever 30. That is, one end of the link 41 is fastened and connected to the swing lever 30 by the bolt 44 under the interposition of the space keeping member 43, and the other end thereof is formed at the connecting portion 22 of the rotation gear 20. It is connected through the through-hole 45 which is made.

A rack portion 41a for length adjustment is formed on one side of the link 41 connected in this way, and the pinion portion 42a formed below the rack portion 41a and the adjusting rod 42 is formed. It is configured to engage or engage the coupling rod 42 to the outside of the center of the rotation gear 20 and the link connecting portion of the swing lever 30. The adjusting rod 42 penetrates through the connecting portion 22 of the rotating gear 20 so that the pinion portion 42a at the bottom thereof is engaged with the rack portion 41a of the link 41, and the upper portion thereof has a head. Protrude out of the. An adjustment knob 46 having an indicator portion 46a is forcibly fitted to the upper portion of the adjustment rod 42 protruding to the outside, and a scale is stamped on the head surface around the adjustment knob 46 to rotate left and right of the head. The angle can be adjusted exactly as desired.

As such, the present invention adjusts the distance between the center of the rotation gear 20 and the link 41 connection portion of the swing lever 30 from the outside to appropriately adjust the left and right rotation angles of the head. The distance between the center of 20 and the linking portion of the link 41 of the swing lever 30 should remain unchanged during operation. To this end, in the present invention, at the rear of the link 41, a position fixing means 50 is provided to fix the fixed interval to be maintained as it is. The position fixing means 50 is a plurality of fixing grooves 51 formed on the opposite surface of the rack portion 41a of the link 41 and at least one ball 52 inserted into and fixed to the fixing groove 51. ), A spring 53 for elastically supporting the ball 52, a support member 54 for supporting the ball 52 and the spring 52, and a fixing member 55 fastened to the support member 54. ) Has a configuration. That is, the ball 52 is selectively inserted into any one of the fixing grooves 51 of the link 41 to adjust and maintain the adjusted gap as it is when adjusting the distance between the two counterparts. Here, the maximum distance between the two counterparts (the center of the rotation gear and the link connection part of the swing lever) that can be adjusted is the distance between the head fixing point (a) of the up and down moving body (2) and the fixed end (3) of the swing lever (30). The present invention operates smoothly under the condition that the distance from the head fixation point to the center of the rotating gear 20 and the length of the swing lever 30 should be the same. To this end, in the present invention, one side of the link 41, for example, a stopper (not shown) is formed to limit the deviation from the point where the adjustment interval is maximized. Therefore, the rotation angle of the head can be adjusted at various angles within a range that is no longer greater than the distance between the head fixing point and the swing lever 30.

Hereinafter, look at the operation of the device according to the present invention as described above and the effects thereof.

When the initial fan is 'on', the motor 1 is operated so that the fan coupled to the shaft 1a of the motor 1 rotates to generate wind. At this time, since the motor 1 moves, the worm wheel 12 engaged with the worm 11 coupled to its rear end shaft also rotates, but the worm wheel 12 idles with the clutch means shorted, and the rotating gear ( Power transmission to 20 is not made. Therefore, there is no left and right rotation of the head and the air is blown in only one direction. In such a state, when the wind direction control knob is operated to convert to the rotation mode, the operation lever 19 connected to the mode conversion wire 18 rotates about the hinge point to lower the upper clutch member 15 so that the upper, The lower clutch member is engaged, whereby the power of the motor 1 is transmitted to the rotation gear 20 through the power transmission gear 13a of the power transmission shaft 13. The rotation gear 20 is rotated by the power transmission as described above, and the swing lever 30 interlocked therewith rotates the head from side to side while swinging at a predetermined angle. Therefore, many people can feel the cool in common.

If the user is reduced to two or three people while using the fan in such a state, it is necessary to reduce the head rotation angle because the wind blows to the place where there is no person if the existing head rotation angle is maintained. By rotating the adjustment bar 42 protruding into the interval between the center of the rotational gear 20 and the linking portion of the link 4 of the swing lever 30, it is possible to adjust the left and right rotation angle of the head. That is, as the distance between the center of the rotation gear 20 and the linking portion of the link 41 of the swing lever 30 is increased, the left and right pivot angle of the head becomes larger, and the smaller the left and right pivot angle of the head becomes smaller. . This principle is based on the swing link of the four-section link structure. By rotating the adjusting rod 42 and reducing the length of the link 41 according to this principle, the swing angle of the swing lever 30 becomes small. The angle of rotation of the head can be reduced. On the contrary, when the length of the link 41 is largely adjusted, the swing angle of the swing lever 30 becomes large, and thus the left and right pivot angles of the head become large. At this time, the maximum variable length of the link 41 is limited to the same length as the interval between the head fixed point and the swing lever 30 fixed end, because the larger the longer the mutual interference occurs so that the head does not rotate. In addition, the arbitrarily variable length of the link 41, for example, the distance between the center of the rotating gear 20 and the linking portion of the link 41 of the swing lever 30 is fixed without change until the user adjusts it again by the position fixing means. maintain.

As described above in detail, according to the wind direction control device of the fan according to the present invention, by adjusting the head rotation angle of the fan at an arbitrary angle, so that the wind direction range can be more varied, appropriately adjusted according to the number of people By using it, the efficiency of using a fan can be aimed at. In other words, in the related art, the head is rotated only by a predetermined angle, so that when two or three people use it, there is an inefficient problem such that the wind blows to the place where there is no person, but according to the present invention, the rotation angle of the head when two or three people is used. It can be used to make it small, and if there are many people, it can be used to increase the angle of rotation of the head, so in any case, all users can feel the cool in common, This eliminates the need for a highly efficient fan. In addition, the present invention is expected to be advantageous in selling electric fans with the advantages of simple structure, reliable operation, and low manufacturing cost by using a link structure having a relatively simple structure.

Claims (6)

The motor of the fan which drives the fan of the fan is selectively driven, and the rotation gear is rotated through the power transmission means for decelerating and transmitting, and the swing lever is connected to the connection part extending to the lower part of the fan. In the wind direction control device of the fan for rotating in the left, right direction, the connecting portion of the rotating gear is provided with a connecting link having a rack portion for variable length on one side through the through-hole of the connecting link is a swing lever at the end of the connecting link. Is connected, and the adjusting rod having a pinion portion engaged with the rack portion of the connecting link is installed to penetrate the connecting portion of the rotating gear up and down, thereby varying the distance between the center of the rotating gear and the swing lever connecting portion of the connecting link. Wind direction control device for the fan, characterized in that the right rotation angle can be adjusted arbitrarily The apparatus of claim 1, further comprising a position fixing means for fixing and maintaining an adjusted distance between the center of the rotating gear by the adjusting rod and the link connecting portion of the swing lever. The method of claim 2, wherein the position fixing means comprises a plurality of fixing grooves formed on the opposite side of the rack portion of the link, at least one ball inserted and fixed to the fixing groove, a spring for elastically supporting the ball, The wind direction control device of the fan comprising a support member for supporting the ball and the spring built-in, and a fixed member fastened to the support member According to claim 1, wherein the adjusting knob having an indication portion is coupled to the upper portion of the adjustment bar, and the scale is formed on the head surface around the adjustment knob to ensure accuracy in adjusting the rotation angle of the head. Fan direction control device The distance from the up and down moving body fixed point of the head to the center of the rotating gear and the length of the swing lever are equal, and the maximum variable length of the link by the adjusting rod and the distance from the head fixed point to the swing lever fixed end are equal. Wind direction control device, characterized in that the fan The wind direction control device of the fan of claim 5, wherein the link is provided with a stopper for supporting the link not to exceed the maximum variable length of the link.