JP2020176521A - Tower fan - Google Patents

Abstract

To provide a tower fan in which a fan is easily removed and attached without using a tool.SOLUTION: The present invention relates to a tower fan in which a fan accessory 3 including a fan 31 and a clutch body 32 and a motor accessory 4 including a motor 41 and a clutch seat 42 in which a swingable connecting lock 43 is integrated are disposed inside of a main body accessory and the clutch body 32 and the clutch seat 42 are coaxially linked, thereby connecting the fan accessory 3 and the motor accessory 4. A fixing projection which is provided on a linking surface 35 of the clutch body 32 penetrates a penetration port which is provided on a linking surface 420 of the clutch seat 42, and is engaged with a fixing groove which is provided in the connecting lock 43. Thus, the connection of the clutch body 32 and the clutch seat 42 is fixed, the fixing projection and the fixing groove are unlocked by swinging the connecting lock 43, and the linkage is cancelled.SELECTED DRAWING: Figure 1

Description

The present invention relates to a tower fan that blows air with a cross-flow fan, and particularly to a fan attachment / detachment structure.

The tower fan is used as a blower fan in a room such as a home or an office, and a cross-flow fan in which a large number of blades are installed in a cylindrical shape and a motor for rotating the fan are installed in the tower fan body. The cross-flow fan has a long rotating shaft, and in order for the cross-flow fan to rotate stably, the rotating shaft of the fan must be closely connected to the output shaft of the motor, and is usually connected using screws. ing. The connection with screws can be a stable and tight connection, but such a fan attachment / detachment work is a laborious work using a tool.

As the operation of the tower fan progresses, dust adheres and accumulates inside the fan and the main body, and it may be discharged indoors together with the blown air. From a hygienic point of view, remove the fan after a certain period of operation. It is necessary to clean the inside of the fan and the main body. Therefore, it is desired that the fan attachment / detachment work can be performed easily and easily.

In order to easily attach and detach such a fan and a motor, it has been proposed to connect the fan and the motor by using an elastic material. In Patent Document 1, a drive hub integrally molded from a thermoplastic elastic material is fitted into a circular hole-shaped cavity provided in a drive side end plate of a fan, and a motor output is provided in a sleeve provided in the drive hub. The structure in which the shaft is inserted and connected is shown. Patent Document 2 discloses a blower device that connects a fan and a motor by providing a boss formed of an elastic material having an insertion portion of a motor output shaft on the drive side end plate of the fan. In these documents, the desorption work can be easily performed by utilizing the fact that the elastic material is deformed by an external force, but the elastic material may be deteriorated and the connection may be insufficient by repeating the work.

According to Patent Document 3, the bearing attached to the rotating shaft of the fan is provided with a slidable stopper having a claw at the tip, and the stopper is inserted into the attachment / detachment hole of the side wall of the air conditioner main body. It has been shown that the claws are slid and fixed by hooking them on the engaging portions of the attachment / detachment holes, and the rotating shaft is attached to the side wall. Then, when removing the fan, it has been shown that the fan can be easily attached and detached by removing the claw portion from the engaging portion, sliding the stopper to pull it into the bearing, and removing the bearing from the attachment / detachment hole. However, in this document, the connection between the fan and the motor is performed by making the cross section of the rotating shaft of the fan quadrangular, hexagonal or semicircular, and providing holes of the same shape in the drive bearing of the motor. Although easy to put on and take off, the connection is not stable and tight.

Japanese Unexamined Patent Publication No. 2000-220595 Japanese Unexamined Patent Publication No. 2004-232511 JP-A-2015-206482

An object of the present invention is to provide a tower fan in which a fan attachment / detachment operation can be easily performed without using a tool.

The tower fan of the present invention incorporates a fan accessory having a clutch body that is connected and fixed to the fan and the fan rotating shaft, and a clutch that is connected and fixed to the motor output shaft by incorporating a connecting lock that can swing coaxially inside the motor. A motor accessory having a seat is arranged inside the main body accessory, and is a tower fan in which the fan accessory and the motor accessory are connected by coaxially connecting the clutch body and the clutch seat, and on the connecting surface of the clutch body. A fixing protrusion is provided, and a through hole is provided on the connecting surface of the clutch seat. In the connection between the clutch body and the clutch seat, the fixing protrusion penetrates the through opening and engages with a fixing groove provided in the connecting lock. It is characterized in that the connection is fixed by being engaged, and the connection is released by disengaging the fixing protrusion and the fixing groove by swinging the connecting lock.

Further, in the tower fan, the fixing groove is provided on the connecting surface of the clutch body and the fixing protrusion is provided on the connecting lock. In the connecting between the clutch body and the clutch seat, the fixing groove penetrates the through-hole to form a connecting lock. Even if the connection is fixed by engaging with the provided fixing protrusion, and the fixing groove and the fixing protrusion are disengaged by swinging the connecting lock, the connection is released. Good.

Then, either one of the connecting surface of the clutch body and the connecting surface of the clutch seat is provided with a evangelism protrusion projecting in the axial direction, and the other is provided with a evangelism hole capable of accommodating the evangelism protrusion. It is preferable that the evangelism protrusion is housed in the evangelism hole by connecting the clutch seats. This structure is a combined type clutch, and the transmission protrusion is housed and fitted in the transmission hole by the connection between the clutch body and the clutch seat, and the driving force from the motor output shaft is reliably transmitted to the fan rotation shaft. Can be done.

Further, the fixing protrusion and the fixing groove are respectively extended in a direction parallel to the output shaft of the motor, and a locking claw provided at the tip of the fixing protrusion is engaged with an engaging portion provided at the tip of the fixing groove. It is preferable that the structure is such that the fixing protrusion and the fixing groove are engaged with each other by being combined. Further, the connecting lock is preferably urged by a return spring and swingably incorporated into the clutch seat, and the engagement between the fixing protrusion and the fixing groove is fixed by the return spring, but the return spring is used. By swinging the connecting lock in the extending direction, the engagement can be disengaged and the clutch can be disengaged.

Then, the clutch body and the clutch seat may be exchanged so that the clutch seat is connected and fixed to the rotating shaft of the fan, and the clutch body is connected and fixed to the output shaft of the motor. Further, it is preferable that the distance in the output axial direction of the gap between the opposite end of the connecting surface of the clutch seat and the motor or fan is larger than or equal to the height of the connecting lock.

The main body accessory has a rear cover, an upper cover, a front cover and a base as components, and at least one of these components and other components can be removed and assembled. Then, it is preferable that a door accessory is installed on at least one of the rear cover and the front cover, and the door accessory is attached to at least one of the rear cover and the front cover so as to be openable and closable.

In the tower fan of the present invention, as described above, the clutch body and the clutch seat are connected by utilizing the engagement between the fixing protrusion and the fixing groove, and the fan accessory and the motor accessory are connected. Therefore, the tower fan and the motor output shaft are connected. The connection of the fan rotation shaft is reliable, stable connection can be ensured even during ventilation operation, and the fan attachment / detachment work when cleaning the tower fan can be easily performed with bare hands without using tools, making cleaning easy. Can be done.

Furthermore, by using a mating type clutch that combines a transmission protrusion and a transmission hole that houses it, the driving force output from the motor accessory can be reliably transmitted to the fan accessory, and the fan is stable. It can be driven to rotate.

A perspective view of the separated fan and motor accessories. Side view of fan accessories and motor accessories placed inside the main body accessories. The perspective view of the motor and the motor bracket. The perspective explanatory view of the clutch body, the clutch seat, the connecting lock and the return spring. Explanatory drawing for incorporating the connecting lock into the clutch seat. Explanatory drawing of the connection between the clutch body and the clutch seat and the release thereof. Main body accessory components and assembly explanatory drawing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings of the examples.

FIG. 1 is a perspective external view showing a state in which the fan accessory 3 and the motor accessory 4, which are the main components of the tower fan, are separated from each other. The fan accessory 3 is composed of a fan 31 in which a large number of blades are arranged in a cylindrical shape, and a clutch body 32 connected to one end of the rotation shaft of the fan. The motor assembly 4 is composed of a clutch composite including a motor 41, a clutch seat 42 connected to a motor output shaft, and a coupling lock 43 swingably connected to the clutch seat 42 by a connecting spring 44. ..

FIG. 1 shows a state in which the fan accessory 3 and the motor accessory 4 are separated, but the clutch body 32 connected and fixed to the lower end of the rotating shaft of the fan 31 and the clutch seat 42 connected and fixed to the output shaft of the motor 41. Both accessories can be connected by connecting with. In this embodiment, the connecting surface 420 of the clutch seat 42 is provided with a transmission protrusion 421, the connecting surface 341 of the clutch body 32 is provided with a transmission hole 322, and the transmission hole 322 and the transmission protrusion 421 are each provided with three. It is provided. Then, by connecting the clutch body 32 and the clutch seat 42, the evangelism protrusion 421 is housed in the evangelism hole 322 and both are fitted. As described above, the clutch body 32 and the clutch seat 42 are fitting type clutches, and the driving force output from the motor accessory 4 can be reliably transmitted to the fan accessory 3.

In FIG. 2, the clutch body 32 and the clutch seat 42 are connected to each other, the fan accessory 3 and the motor accessory 4 are connected, and the fan accessory 3 is arranged at the upper part and the motor accessory 4 at the lower part inside the main body accessory 1. The upper end of the fan rotating shaft 311 is rotatably connected to the upper part of the tower fan body assembly 1 by a fan bearing 51 and a bearing cover 52, and a clutch body 32 is fixed to the lower end of the fan rotating shaft of the fan 31. It is fixedly connected by a screw that has passed through. The clutch seat 42 and the clutch body 32 are connected to each other of the motor 41 fixed to the motor bracket 45 installed at the lower part of the main body accessory 1 and the clutch seat 42 connected to the motor output shaft 411. Then, it is connected to the fan accessory 3 and the driving force output from the motor accessory 4 is surely transmitted as described above. By the transmission of this driving force, the fan 31 rotates and blows the wind out of the main body accessory 1. A perspective explanatory view of the motor 41 and the motor bracket 45 is shown in FIG. The connecting lock 43 and the return spring 44 related to the operation of fixing and releasing the connection between the clutch body 32 and the clutch seat 42 are incorporated inside the clutch seat 42. Then, the size of the gap between the lower end of the clutch seat 42 and the upper end of the motor 41 equalizes or increases the height of the connecting lock 43, so that the connecting lock 43 can be easily pulled out downward when the connection is released. become.

FIG. 4 is a perspective explanatory view of the clutch body 32, the clutch seat 42, the connecting lock 43, and the return spring 44. The connecting lock 43 is incorporated inside the clutch seat 42, and can be moved far by the return spring 44. In the clutch body 32 and the clutch seat 42, the connecting surfaces 341 and 420 are in close contact with each other, and the driving force output from the motor accessory 4 is transmitted to the fan accessory 3.

The clutch body 32 is composed of a cylindrical portion 33 and a flange portion 34. A rotating shaft insertion cylinder 332 and a fixing screw hole 331 are provided inside the cylindrical portion 33, and the rotating shaft of the fan is inserted inside the rotating shaft insertion cylinder 332. Then, the fixing screw is tightened and fixed through the fixing screw hole 331, and the clutch body 32 can be connected and fixed to the fan. The lower surface of the flange portion 34 is the connecting surface 341, and three fixing protrusions 320 are provided on this surface extending in parallel with the rotation axis direction, and three transmission holes 322 are further provided from this surface to the cylindrical portion 33. It is provided over. A hook-shaped locking claw 321 is provided at the tip of the fixing protrusion 320, and occludes and engages with the engaging portion 431 of the fixing groove 430 provided so as to extend in parallel with the rotation axis direction on the connecting lock 43. By this engagement, the fixing protrusion 320 is fixed to the fixing groove 430, and the connection between the clutch body 32 and the clutch seat 42 is fixed. The evangelism hole 322 accommodates the evangelism protrusion 421 provided in the clutch seat 42, and functions to reliably transmit the driving force.

The clutch seat 42 has a short cylindrical shape with an opening at the bottom, and the upper surface is a connecting surface 420 that connects with the connecting surface 341 of the clutch body 32, and is housed in a transmission hole 322 provided in the clutch seat 42 to ensure driving force. There are three evangelism protrusions 421 for transmitting to the vehicle. Further, the connecting surface 420 is provided with three through ports 422 and a clutch connecting cylinder 426. The through-hole 422 is for the fixed protrusion 320 to penetrate when the clutch body 32 is connected, and the clutch connecting cylinder 426 is provided as a protrusion on the connecting surface 420, as shown in FIG. A connecting lock mounting cylinder 427 is provided inside the clutch seat 42 in succession with the clutch connecting cylinder 426. As shown in FIG. 6, the protruding clutch connecting cylinder 426 is inserted inside the clutch seat insertion cylinder 333 of the clutch body 32 at the time of connection, and functions to coaxially connect the clutch body 32 and the clutch seat 42. .. The inside of the clutch connecting cylinder 426 and the connecting lock mounting cylinder 427 is a continuous tubular portion, and has a function of inserting and connecting the output shaft 411 of the motor 41 shown in FIG. 3, with the clutch seat 42. The motor 41 can be connected and fixed. In this case, if necessary, it can be operated from the fixing screw operation port 423 provided on the clutch seat 42, and the connection between the annular portion and the motor output shaft can be more reliably connected and fixed by the fixing screw.

As shown in FIG. 4, the connecting lock 43 incorporated inside the clutch seat 42 is provided with three fixing grooves 430, a hook-shaped engaging portion 431 is provided at the tip portion, and the tip of the fixing protrusion 320 is provided. The locking claws 321 provided on the portion are engaged with each other. The central portion of the connecting lock 43 incorporated inside the clutch body 32 is a mounting port 434, and as shown in FIG. 5, the mounting port 434 is continuously provided inside the clutch connecting cylinder 426. The connecting lock 43 can be incorporated into the clutch seat by inserting it into the lock mounting cylinder 427 so that it can swing clockwise and counterclockwise.

As shown in FIG. 6, both connecting surfaces can be connected by pressing the connecting surface 341 of the clutch body 32 against the connecting surface 420 of the clutch seat 42. As described above, the clutch connecting cylinder 426 is inserted into the clutch seat insertion cylinder. By pressing while inserting into the inside of the 333, the two connecting surfaces can be connected while maintaining the coaxiality. In this connection, the transmission protrusion 421 provided on the clutch seat 42 fits with the transmission hole 322 provided on the clutch body 32, and the driving force from the motor accessory is reliably transmitted to the fan accessory. Then, the fixing protrusion 320 provided on the clutch body 32 penetrates the through opening 422 provided on the clutch seat 42 and engages with the fixing groove 430 of the connecting lock 43 incorporated in the clutch seat 42.

The engagement between the fixing protrusion 320 and the fixing groove 430 is such that when the connecting surface 341 and the connecting surface 420 are pressed against each other, the locking claws 321 provided at the tips of the protrusion and the groove and the engaging portion 431 are engaged. Engagement is performed by engaging and engaging with each other. As shown in the lowermost view of FIG. 6, which is a bottom view of the clutch lock 42 in which the connecting lock 43 is incorporated, as seen from below, the return springs 44 are attached to the fixing holes 425 and 435, and clockwise in this figure. It is urged to attract the connecting lock 43 in the direction. Therefore, when both connecting surfaces are pressed, the locking claw 321 and the tip of the engaging portion 431 are pressed against each other, and the return spring 44 is stretched by the action of tilting the tip, and both intersect and bite. It will be combined. After being occluded, the return spring 44 contracts to fix the occlusal of the two, so that the engagement between the two is maintained. In this way, the fixing protrusion 320 and the fixing groove 430 are smoothly engaged by the action of the return spring 44, the connection between the clutch body 32 and the clutch seat 42 is fixed, and it is prevented from being disengaged during operation. To.

On the other hand, to release the connection, the locking claw 321 and the engaging portion 431 are released by swinging the connecting lock 43 in the direction of extending the return spring (counterclockwise in the bottom view of FIG. 6) using the handle 432. The engagement can be disengaged, the clutch can be disengaged, the fan accessory 3 can be disengaged from the motor accessory 4, and can be taken out from the main body accessory 1. This operation can be performed by a simple operation in which the handle 432 provided on the connecting lock 43 and the handle 424 provided on the clutch seat 42 are brought close to each other by sandwiching them with the index finger and the thumb. In this way, after disengaging the fixing protrusion 320 and the fixing groove 430, the connecting lock 43 can be pulled out below the clutch seat 42 to release the connection between the clutch body 32 and the clutch seat 42.

In this way, since the connecting lock 43 is attached to the clutch seat 42 so as to be movable, the connection and release of the clutch body 32 and the clutch seat 42 can be operated without using a tool, and the fan accessory 3 can be easily attached to and removed from the main body accessory 1.

As shown in FIG. 7, the main body accessory 1 has a rear cover 11, an upper cover 12, a front cover 13 and a base 14 as components, and at least one of these components and other components can be removed and removed. It can be assembled. In this figure, the door accessory 2 to which the magnet 24 is attached to the door 21 is hinged to the hinge attachment portion 15 of the front cover 13 by using the U-shaped hinge 22 and the hinge attachment plate 23. A magnet 16 is attached to the front cover 13 and acts together with the magnet 24 attached to the door accessory 2 to maintain the closing of the door accessory 2 when the door accessory 2 is closed, so that the door accessory 2 can be opened and closed. It is designed to be convenient.

Although the preferred embodiment has been described in detail with reference to the above figure, other aspects included in the claims are also included. For example, in FIGS. 4 to 6, the transmission hole 322 is provided in the clutch body 32 and the transmission protrusion 421 is provided in the clutch seat 42, but the transmission hole 322 may be provided in the clutch seat 42 and the transmission protrusion 421 may be provided in the clutch body 32. In this case, the clutch lock 43 increases the distance from the connecting surface so as not to come into contact with the inserted evangelism protrusion.

Further, the fixing groove 430 may be provided on the clutch body 32 and the fixing protrusion 320 may be provided on the connecting lock 43. In this case, the fixing groove 430 passes through the through port 422 and engages with the fixing protrusion. Further, the clutch seat 42 may be provided on the rotation shaft of the fan 1, and the clutch body 32 may be provided on the output shaft 411 of the motor 41. From the above description, those skilled in the art can easily understand that these aspects have the same action and effect.

The articulated structure of a fan accessory and a motor accessory using a clutch body and a clutch seat in the tower fan of the present invention can be applied not only to a blower fan but also to a fan such as an air conditioner.

1 Body accessories 11 Rear cover 12 Top cover 13 Front cover 14 Base 15 Hinge mounting part 16 Magnet 2 Door accessory 21 Door 22 U-shaped back hinge 23 Hinge mounting plate 24 Magnet 3 Fan accessory 31 Fan 311 Fan rotation shaft 32 Clutch body 33 Cylindrical part 34 Flange 320 Fixing protrusion 321 Locking claw 322 Transmission hole 331 Fixing screw hole 332 Output shaft insertion cylinder 333 Clutch seat insertion cylinder 341 Connecting surface (clutch body)
4 Motor accessories 41 Motor 411 Motor output shaft 42 Clutch seat 420 Connecting surface (clutch seat)
421 Evangelism protrusion 422 Through port 423 Fixed screw operation port 424 Handle (clutch seat)
425 Return spring fixing hole 426 Clutch articulation cylinder 427 Coupling lock mounting cylinder 43 Coupling lock 430 Fixing groove 431 Engagement part 432 Handle (coupling lock) 433 Swing control groove 434 Mounting port 435 Return spring fixing hole 436 Swing stopper 44 Return spring 45 Motor bracket 51 Fan bearing 52 Bearing cover

Claims (11)

A fan accessory having a clutch body that is connected and fixed to the fan and the fan rotation shaft, and a motor accessory that has a clutch seat that is coaxially swingable and swingable inside the motor and is connected and fixed to the motor output shaft. It is a tower fan that is placed inside the main body accessory and connects the fan accessory and the motor accessory by coaxially connecting the clutch body and the clutch seat. A fixed protrusion is provided on the connecting surface of the clutch body, and the clutch A through hole is provided on the connecting surface of the seat, and in the connection between the clutch body and the clutch seat, the fixing protrusion penetrates the through hole and is engaged with the fixing groove provided in the connecting lock to form the connection. A tower fan that is fixed and the connecting lock is swung to disengage the fixing protrusion and the fixing groove and release the connection. The fixing groove is provided on the connecting surface of the clutch body, and the fixing protrusion is provided on the connecting lock. In the connection between the clutch body and the clutch seat, the fixing groove penetrates the through opening and engages with the fixing protrusion provided on the connecting lock. The tower fan according to claim 1, wherein the connection is fixed by engaging the joint, and the connection is released by disengaging the fixing protrusion and the fixing groove by swinging the connecting lock. A transmission protrusion that projects in the axial direction is provided on either one of the connecting surface of the clutch body or the connecting surface of the clutch seat, and a transmission hole that can accommodate the transmission protrusion is provided on the other side of the clutch body and the clutch body. The tower fan according to claim 1 or 2, wherein the transmission protrusion is housed in the transmission hole by connecting the clutch seats. The fixing protrusion and the fixing groove are respectively extended in a direction parallel to the output shaft of the motor, and a locking claw provided at the tip of the fixing protrusion is engaged with an engaging portion provided at the tip of the fixing groove. The tower fan according to any one of claims 1 to 3, wherein the fixing protrusion and the fixing groove are engaged with each other. The tower fan according to any one of claims 1 to 4, wherein the connecting lock is urged by a return spring and is swingably incorporated into the clutch seat. The fan accessory is characterized in that the clutch seat is connected and fixed to the rotating shaft of the fan instead of the clutch body, and the motor accessory is connected and fixed to the output shaft of the motor instead of the clutch seat. The tower fan according to any one of claims 1 to 5. According to any one of claims 1 to 5, the distance between the opposite end of the connecting surface of the clutch seat and the gap of the motor in the output shaft direction is larger than or equal to the height of the connecting lock. The tower fan listed. The tower fan according to claim 6, wherein the distance between the opposite end of the connecting surface of the clutch seat and the gap in the rotation axis direction of the fan is larger than or equal to the height of the connecting lock. The main body accessory has a rear cover, an upper cover, a front cover, and a stand base as components, and at least one of these components and other components can be removed and assembled. The tower fan according to any one of claims 1 to 8. The tower fan according to claim 9, wherein a door accessory is installed on at least one of the rear cover and the front cover. The tower fan according to claim 10, wherein the door accessory is hinged to at least one of the rear cover and the front cover so as to be openable and closable.

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