JP2010156253A - Fan device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fan device allowing simple, easy and sure attachment and detachment of a fan and a rotary shaft without using tools. <P>SOLUTION: The fan device 1 includes the rotary shaft 10 having a locking groove 10f formed along a circumference surface, a fan 8 detachably attached to the rotary shaft, and a rotary shaft attachment and detachment device 12 provided on the fan and attachably and detachably retaining the rotary shaft. The rotary shaft attachment and detachment device includes an operation lever member 18 including a fixed end part 18a of which one end part is fixed, an engagement part 18d extending from the fixed end part and engaging with the locking groove of the rotary shaft, and a pressing part 18f for pressing another end part toward the rotary shaft. Engagement of the engagement part of the operation lever member and the locking groove of the rotary shaft is disengaged by pressing the pressing part of the operation lever member. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a fan device for ventilating a room.

Conventionally, as a fan device having a fan and a rotating shaft for rotating the fan, it is incorporated in a ventilation device called a so-called range hood installed above the heating cooker of the system kitchen, and the heating cooker is being used. There are those that exhaust the smoke and odor generated outside to ventilate the room, and those that are built into a ventilator attached to the ceiling of an apartment house or general house. In such a fan device, dirt due to exhaust gas adheres to the fan and the rotating shaft during use. However, if these are left unattended, the ventilation performance of the fan deteriorates and it is not preferable for environmental hygiene. Therefore, periodic maintenance such as removing the fan from the fan device and cleaning it at an appropriate time must be performed according to the frequency of use.
Thus, how to easily and safely attach and detach the fan from the fan device in performing maintenance such as cleaning the fan has been a conventionally requested issue.
In order to solve such a problem, in the conventional fan device, for example, as described in Patent Document 1, the rotation shaft of the fan is held by a pair of holding portions, and the pair of holding portions is almost By holding the pressing part integrally provided in a U shape with a fingertip, the holding force of this pair of holding parts is released, and the fan can be easily attached and detached from the rotating shaft without using a tool or the like. Are known.

Japanese Patent No. 4101600

  However, in the above-described conventional fan device, the pressing portion used when the fan is attached to and detached from the rotating shaft is easily deformed to the extent that it can be elastically deformed by being pinched with a fingertip, and has poor durability. For this reason, the pair of holding portions formed integrally with the pressing portion in a U-shape is also poor in durability, and there is a limit to exhibiting a high holding force. Therefore, there is a problem that application is difficult when it is required to hold a large and heavy fan that requires high ventilation performance of the fan itself. In addition, since the rotating shaft of the fan is held by the pair of holding portions, if any one of the pair of holding portions has a problem, it cannot be used, and there is a problem that the risk of failure is high.

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and provides a fan device that can easily and reliably attach and detach the fan and the rotating shaft without using a tool. The purpose is that.

In order to achieve the above object, the present invention provides a fan device for ventilating a room, a rotating shaft having a locking groove formed along a peripheral surface, and a fan removably attached to the rotating shaft. A rotary shaft attaching / detaching device that is provided on the fan and detachably holds the rotating shaft. The rotary shaft attaching / detaching device includes a fixed end to which one end is fixed, and a fixed end from the fixed end. An operating lever member that includes an engaging portion that extends and can be engaged with a locking groove of the rotating shaft, and a pressing portion whose other end portion can be pressed toward the rotating shaft, and that is pressed by the operating lever member The fan device is configured so that the engagement between the engaging portion of the operation lever member and the locking groove of the rotating shaft is released by pressing the portion.
In the present invention configured as described above, when the fan is removed from the rotating shaft, the pressing portion of the operating lever member of the rotating shaft attaching / detaching device is pressed toward the rotating shaft, whereby the engaging portion of the operating lever member Since the engagement between the rotating shaft and the locking groove of the rotating shaft is released, the fan and the rotating shaft can be easily and reliably attached and detached without using a tool. On the other hand, when the fan is attached to the rotating shaft, the operating lever member and the rotating shaft of the rotating shaft attaching / detaching device are locked with each other by engaging the engaging portion of the operating lever member with the locking groove of the rotating shaft. The fan and the rotating shaft can be securely attached. Further, it is possible to prevent the fan from being inadvertently detached from the rotating shaft during operation of the fan device.

In the present invention, preferably, the operating lever member includes a fixed end portion and an engaging portion, and the engaging portion is biased to the rotating shaft with a predetermined biasing force, and the biasing arm portion. And a pressing arm portion which is bent so as to surround the rotating shaft from the engaging portion and extends in a substantially right angle direction with respect to the urging arm portion, and a distal end portion of which forms a pressing portion.
In the present invention configured as described above, when removing the fan from the rotating shaft, the pressing portion of the pressing arm portion of the operation lever member in the rotating shaft attaching / detaching device is pressed toward the rotating shaft, and the pressing arm portion is When the pressing force that presses the engaging portion of the biasing arm portion exceeds the biasing force that biases the engaging portion of the biasing arm portion against the rotating shaft, the pressing arm causes the pressing arm portion to move against the rotating shaft. On the other hand, it is elastically bent in a plane substantially perpendicular to the elastic arm, and an elastic deflection occurs around the fixed end of the urging arm portion, and the engaging portion of the urging arm portion moves away from the engaging groove of the rotating shaft and rotates. The engagement with the locking groove of the shaft is released. As a result, the fan and the rotating shaft can be easily and reliably attached and detached without using a tool. On the other hand, when the fan is attached to the rotating shaft, the engaging lever of the urging arm portion of the operating lever member is engaged with the engaging groove of the rotating shaft, so that the operating lever member and the rotating shaft of the rotating shaft attaching / detaching device are connected. Are locked to each other so that the fan and the rotating shaft can be securely attached. Further, it is possible to prevent the fan from being inadvertently detached from the rotating shaft during operation of the fan device.

In the present invention, preferably, the rotating shaft includes a tapered portion formed in a tapered shape from a proximal end portion adjacent to the locking groove to a distal end portion thereof.
In the present invention configured as described above, when the fan is attached to the rotating shaft, the rotating shaft can be easily inserted to the engaging portion of the biasing arm portion of the operating lever member in the rotating shaft attaching / detaching device by the tapered portion of the rotating shaft. Thus, the engaging groove of the rotating shaft and the engaging portion of the urging arm portion of the operating lever member can be easily engaged. Further, when removing the fan from the rotating shaft, the pressing portion of the pressing arm portion of the operating lever member is pressed toward the rotating shaft, and the engaging portion of the biasing arm portion of the operating lever member and the locking groove of the rotating shaft It becomes easy to take out the fan from the tapered portion of the rotating shaft only by once releasing the engagement with. As a result, the fan and the rotary shaft can be easily and reliably attached and detached without using a tool.

In the present invention, preferably, the rotation shaft has a locking groove taper portion formed in a taper shape so that a portion transitioning from the base end portion of the tapered portion toward the locking groove is narrowed inward in the radial direction. I have.
In the present invention configured as described above, when the fan is attached to the rotating shaft, the tapered portion of the rotating shaft is inserted into the engaging portion of the urging arm portion of the operating lever member in the rotating shaft attaching / detaching device. When the engaging portion of the biasing arm portion of the member gets over the proximal end portion of the tapered portion of the rotating shaft, the engaging portion of the biasing arm portion of the operating lever member is moved to the tapered portion by the locking groove taper portion of the rotating shaft. Since the guide shaft moves from the base end portion toward the locking groove and moves smoothly, the rotating shaft can be locked smoothly and reliably by the engaging portion of the biasing arm portion of the operation lever member. On the other hand, when the fan is removed from the rotating shaft, the engaging portion of the urging arm portion of the operating lever member is moved to the rotating shaft only by pressing the tip end portion of the pressing arm portion of the operating lever member in the substantially central direction of the rotating shaft. Since the guide is moved smoothly from the locking groove to the base end of the tapered portion and the locking is released, the fan can be smoothly removed from the rotating shaft.

  According to the fan device of the present invention, the fan and the rotary shaft can be easily and reliably attached and detached without using a tool.

Hereinafter, a fan device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view showing a system kitchen including a range hood in which a fan device according to an embodiment of the present invention is incorporated.
As shown in FIG. 1, the fan apparatus 1 of this embodiment is incorporated in the inside of the range hood 6 installed above the heating cooker 4 of the system kitchen 2 installed in a kitchen room etc., and is cooked. By operating the device 4 during use, smoke or odor generated during cooking is taken into the range hood 6 through a filter (not shown) of the range hood 6 and the like (not shown). ) And so on.

Next, FIG. 2 is an exploded perspective view of the fan device of the present embodiment as seen from an obliquely lower side.
As shown in FIG. 2, the fan device 1 of the present embodiment includes a fan 8, a rotary shaft 10 that rotates the fan 8, and a rotary shaft that is provided on the fan 8 and that holds the rotary shaft 10 in a detachable manner. Device 12. The rotary shaft attaching / detaching device 12 includes a casing member 14, a fixing member 16, and an operation lever member 18.

Next, details of the fan 8, the rotary shaft 10, and the rotary shaft attaching / detaching device 12 will be described in detail with reference to FIGS.
Here, FIG. 3 is a perspective view of the rotary shaft attaching / detaching device in the fan device of the present embodiment as seen obliquely from below, and FIG. 4 is a casing so that the inside can be seen in the rotating shaft attaching / detaching device of the fan device of the present embodiment. It is the top view which looked at the state which cut a part of member in the horizontal direction from the lower part, and FIG. 5 is a longitudinal cross-sectional view which shows the rotating shaft attachment / detachment apparatus in the fan apparatus of this embodiment. FIG. 6 is an enlarged perspective view of the operation lever member and the rotary shaft portion of the rotary shaft attaching / detaching device in the fan device of the present embodiment as viewed from obliquely below, and FIG. 7 is the fan device of the present embodiment. It is the enlarged view which expanded the operation lever member of the rotating shaft attachment / detachment apparatus and the part of the rotating shaft, and was seen from the horizontal direction.
Moreover, in any of FIGS. 3-7, the rotating shaft 10 has shown the state attached to the rotating shaft attachment / detachment apparatus 12 completely.

As shown in FIGS. 2 to 7, first, the fan 8 is, for example, a sirocco fan used for a general blower or the like, and includes a large number of narrow blades 8 a in a cylindrical shape. While rotating, air is sucked from the center and discharged to the surroundings.
The central portion of the upper end portion 8b of the fan 8 includes a protruding portion 8c that protrudes downward in the axial direction, and the protruding portion 8c forms a rotating shaft insertion hole 8d that allows the rotating shaft 10 to be inserted in the axial direction. is doing.

Next, the rotary shaft 10 is a rod member having a circular cross section, and is connected to a drive motor (not shown) provided in the range hood 6. When the power of the range hood 6 is input, the rotary shaft 10 is driven. A motor (not shown) is operated to rotate the rotary shaft 10.
Further, the rotary shaft 10 includes a pair of protrusions 10 a protruding outward in the radial direction at a midway portion thereof, and when the rotary shaft 10 is inserted into the rotary shaft insertion hole 8 d of the fan 8, the pair of rotary shafts 10. The protrusions 10a of the fan 8 are supported by a pair of support grooves 8e formed on the upper surface of the central part of the upper end 8b of the fan 8 so as to correspond to them, and the fan 8 and the rotary shaft 10 are connected. (See FIG. 5 in particular).

Further, the lower end portion 10 b of the rotating shaft 10 inserted into the rotating shaft insertion hole 8 d of the fan 8 is detachably held inside the rotating shaft attaching / detaching device 12. A lower end portion 10b of the rotary shaft 10 includes a tapered portion 10e formed in a tapered shape from a base end portion 10c to a distal end portion 10d that extends outward in the axial direction (downward in the axial direction) (see in particular FIG. 7). .
Further, the rotating shaft 10 includes a locking groove 10f formed adjacent to the base end portion 10c of the tapered portion 10e of the lower end portion 10b and recessed inward in the radial direction (see particularly FIG. 7). Furthermore, the portion of the rotating shaft 10 that transitions from the base end portion 10c of the tapered portion 10e toward the locking groove 10f is provided with a locking groove taper portion 10g that is tapered so as to be narrowed radially inward. (See FIG. 7 in particular).
Further, as shown in FIG. 7, with respect to the diameter of the rotating shaft 10, the diameter at the base end portion 10c of the tapered portion 10e of the main body portion 10h and the lower end portion 10b is maximum at d1, and the diameter d2 of the portion of the locking groove 10f. Is smaller than the diameter d1.

Next, details of each member of the rotary shaft attaching / detaching device 12 will be described.
The casing member 14 of the rotary shaft attaching / detaching device 12 accommodates the operation lever member 18, and is fixed to the center of the upper end portion 8 b of the fan 8 with a screw (not shown) or the like.
Further, the lower surface 14a of the casing member 14 forms a plane substantially perpendicular to the axial direction of the rotary shaft 10 (see particularly FIG. 5).
Further, an operation lever member 18, which will be described later in detail, is disposed on the lower surface 14 a of the casing member 14, and one end of the operation lever member 18 is fixed to the lower surface 14 a in the casing member 14 by a fixing member 16 such as a screw. Thus, the fixed end portion 18a is formed (see particularly FIG. 4).

Next, as shown in FIGS. 2 to 7, the operation lever member 18 of the rotary shaft attaching / detaching device 12 has a main body 18 b formed in a substantially L shape by using a metal thin plate spring member. .
The operation lever member 18 has a fixed end portion 18a fixed on the lower surface 14a of the casing member 14 at a position adjacent to the rotary shaft 10, and the operation lever member main body 18b is connected to the inside of the casing member 14 from the fixed end portion 18a. A biasing arm portion 18e extending to an engaging portion 18d that can be engaged with the locking groove 10f of the rotating shaft 10 through a folded portion 18c that is folded back approximately 180 ° in the same plane as the lower surface 14a of the rotating shaft 10a (particularly FIG. 4 and FIG. 6).

  The urging arm portion 18e functions as a leaf spring. While the fan 8 is attached to the rotating shaft 10, the engaging portion 18d of the urging arm portion 18e is urged toward the rotating shaft 10 with a predetermined urging force F0. In the state where the fan 8 is completely attached to the rotating shaft 10, the engaging portion 18d of the urging arm portion 18e engages with the locking groove 10f of the rotating shaft 10 to rotate the rotating shaft. 10 and the operating lever member 18 are locked (refer to FIGS. 4 to 7 in particular).

  Further, the operation lever member 18 is bent so that the operation lever member main body 18b surrounds the rotation shaft 10 from the engaging portion 18d of the urging arm portion 18e, and extends substantially perpendicularly to the urging arm portion 18e. The distal end portion includes a pressing arm portion 18 g that forms a pressing portion 18 f that can be pressed toward the rotating shaft 10.

  Further, a flange 18h is formed in a portion along the pressing arm portion 18g from the engaging portion 18d of the urging arm portion 18e, and by this flange 18h, rigidity such as bending rigidity and deflection rigidity of the pressing arm portion 18g portion is formed. Is higher than the rigidity of the biasing arm portion 18e.

Next, a method for attaching / detaching the rotating shaft attaching / detaching device and the rotating shaft in the fan device according to the embodiment of the present invention described above will be described.
FIG. 8 is a state explanatory view schematically showing the relationship between the operation and position of the rotary shaft attaching / detaching device and the rotating shaft in the step of attaching / detaching the rotating shaft attaching / detaching device and the rotating shaft in the fan device according to the embodiment of the present invention. It is.

  Here, in FIG. 8, the rotating shaft attaching / detaching device 12 is completely attached to the rotating shaft 10, that is, the engaging portion 18d of the operating lever member 18 of the rotating shaft attaching / detaching device 12 is in the locking groove 10f of the rotating shaft. The completely engaged state is referred to as “state (A)”, and the operation lever member 18 in this state (A) is indicated by a broken line. On the other hand, the rotary shaft attaching / detaching device 12 can be completely detached from the rotating shaft 10, that is, the engaging portion 18d of the operating lever member 18 of the rotating shaft attaching / detaching device 12 and the engaging groove 10f of the rotating shaft are completely engaged. The state released to is “state (B)”, and the operation lever member 18 in this state (B) is indicated by a solid line.

First, when the rotary shaft attaching / detaching device 12 is attached to the rotary shaft 10, the lower end portion 10 b of the rotary shaft 10 is inserted into the casing member 14 through the rotary shaft insertion hole 8 d of the fan 8. The tip portion 10d of the tapered portion 10e passes through the engaging portion 18d of the operation lever member 18.
At this time, the distal end portion 10d of the tapered portion 10e of the rotating shaft 10 is inserted without contacting the engaging portion 18d of the urging arm portion 18e of the operating lever member 18, but the tapered portion 10e of the rotating shaft 10 is inserted. A part of the side surface forming the tapered shape from the base end portion 10 c to the tip end portion 10 d starts to come into contact with the engaging portion 18 d of the operation lever member 18.

  At the same time, the engaging portion 18d of the urging arm portion 18e of the operation lever member 18 is brought into contact with the urging arm portion 18e of the operation lever member 18 by the side surface of the tapered portion 10e of the rotating shaft 10 that is in contact with the piece. The engaging portion 18d is pressed with a pressing force f in the direction opposite to the biasing force F0 (see FIG. 8).

As the insertion of the tapered portion 10e of the rotating shaft 10 gradually proceeds, the contact surface where the side surface of the tapered portion 10e of the rotating shaft 10 and the engaging portion 18d of the biasing arm portion 18e of the operating lever member 18 come into contact with each other. Moves toward the base end portion 10c side of the tapered portion 10e of the rotating shaft 10 and the area of the contact surface gradually increases, the side surface of the tapered portion 10e of the rotating shaft 10 presses the engaging portion 18d of the biasing arm portion 18e. The pressing force f to be gradually increased.
When the pressing force f exceeds the urging force F0 at the engaging portion 18d of the urging arm portion 18e of the operating lever member 18, the engaging portion 18d of the urging arm portion 18e of the operating lever member 18 is Further, the urging arm portion 18e is elastically bent with a deflection amount δ around the fixed end portion 18a in a plane perpendicular to the rotating shaft 10 (in the plane of the lower surface 14a of the casing member 14) so as to be positioned on the outer side. Undergoes bending deformation.

  Next, the insertion of the tapered portion 10e of the rotating shaft 10 further proceeds, and the proximal end portion 10c of the tapered portion 10e of the rotating shaft 10 reaches the position of the engaging portion 18d of the biasing arm portion 18e of the operating lever member 18. Then, the base end portion 10c of the rotating shaft 10 releases the pressing force f that presses the engaging portion 18d of the urging arm portion 18e.

  Then, the urging arm portion 18e of the operating lever member 18 which has been elastically bent by the deflection amount δ is bent back by the urging force F0, and the engaging portion 18d of the urging arm portion 18e of the operating lever member 18 is rotated. 10 is guided toward the locking groove 10f along the taper surface of the 10 locking groove taper portion 10g and smoothly moves, and is fitted into the locking groove 10f of the rotary shaft 10.

  At the time of this fitting, a hitting sound is generated when the engaging portion 18d of the urging arm portion 18e of the operating lever member 18 abuts against the groove surface of the locking groove 10f of the rotating shaft 10, and this hitting sound is heard. Then, the attachment of the fan 8 (rotating shaft attaching / detaching device 12) and the rotating shaft 10 is completed (see FIGS. 4 to 7 and the state (A) in FIG. 8).

  Further, when the engaging portion 18d of the urging arm portion 18e of the operation lever member 18 and the locking groove 10f of the rotating shaft 10 are completely fitted, the urging force F0 of the urging arm portion 18e causes the operation lever member 18 to move. The urging arm portion 18e of the urging arm 18e is urged so as to contact the groove surface of the locking groove 10f of the rotating shaft 10, and the locking groove 10f of the rotating shaft 10 is completely locked. And although the rotating shaft 10 can rotate to the periphery of the axis | shaft, it will be in the state completely fixed to the axial direction (refer the state (A) of FIGS. 4-7 and FIG. 8).

  On the other hand, when the fan 8 (rotary shaft attaching / detaching device 12) and the rotating shaft 10 are completely attached (see the state (A) in FIG. 8), the fan 8 (rotating shaft attaching / detaching device 12) is removed from the rotating shaft 10. When the pressing portion 18f of the pressing arm portion 18g of the operating lever member 18 is pressed toward the rotary shaft 10 with a pressing force P that is greater than or equal to the biasing force F0 of the biasing arm portion 18e, the pressing force causes The biasing arm portion 18e having lower rigidity than the pressing arm portion 18g is elastically deformed around the fixed end portion 18a within a plane perpendicular to the rotating shaft 10 (in the plane of the lower surface 14a of the casing member 14) with a deflection amount δ. As a result of bending deformation so as to bend, the engaging portion 18d of the urging arm portion 18e moves away from the engaging groove 10f of the rotating shaft 10, and the engagement with the engaging groove 10f of the rotating shaft 10 is released.

  When the engagement between the engagement portion 18d of the biasing arm portion 18e of the operation lever member 18 and the engagement groove 10f of the rotation shaft 10 is released, the operation lever member is moved by the locking groove taper portion 10g of the rotation shaft 10. The engaging portion 18d of the 18 biasing arm portions 18e is smoothly guided and moved from the locking groove 10f of the rotating shaft 10 to the proximal end portion 10c of the tapered portion 10e (the state of FIG. 8 (B )reference).

  When the rotary shaft attaching / detaching device 12 is gradually pulled away from the lower end portion 10b of the rotary shaft 10 in the state (B) of FIG. 8, the removal of the fan 8 and the rotary shaft 10 is completed.

  According to the fan device 1 according to the above-described embodiment of the present invention, when the fan 8 is removed from the rotating shaft 10, the pressing portion 18 f of the pressing arm portion 18 g of the operating lever member 18 in the rotating shaft attaching / detaching device 12 is the rotating shaft 10. The pressing force P that the pressing arm portion 18g presses the engaging portion 18d of the urging arm portion 18e causes the urging force that the engaging portion 18d of the urging arm portion 18e urges the rotary shaft 10. When F0 is exceeded, the urging arm portion 18e is elastically bent in a plane substantially perpendicular to the rotating shaft 10 by the pressing force P, and the urging arm portion 18e has an elastic deflection around its fixed end portion 18a. δ is generated, the engaging portion 18d of the urging arm portion 18e is separated from the engaging groove 10f of the rotating shaft 1, and the engagement with the locking groove 10f of the rotating shaft 10 is released. As a result, the fan 8 and the rotating shaft 10 can be easily and reliably attached and detached without using a tool. On the other hand, when the fan 8 is attached to the rotating shaft 10, the engaging shaft 18 d of the urging arm portion 18 e of the operating lever member 18 is engaged with the locking groove 10 f of the rotating shaft 10, thereby rotating the rotating shaft attaching / detaching device 12. The operating lever member 18 and the rotary shaft 10 are locked to each other, so that the fan 8 and the rotary shaft 10 can be securely attached. Further, it is possible to prevent the fan 8 from being inadvertently detached from the rotating shaft 10 during the operation of the fan device 1.

  Further, according to the fan device 1 according to the present embodiment, when the fan 8 (rotary shaft attaching / detaching device 12) is attached to the rotating shaft 10, the taper shape of the tapered portion 10e at the lower end portion 10b of the rotating shaft 10 causes the rotating shaft 10 to move. Since it becomes easy to insert the lower end part 10b into the engaging part 18d of the urging arm part 18e of the operation lever member 18, the attaching operation of the fan 8 (the rotary shaft attaching / detaching device 12) and the rotary shaft 10 can be facilitated. .

  Furthermore, according to the fan device 1 according to the present embodiment, when the fan 8 (rotary shaft attaching / detaching device 12) is removed from the rotating shaft 10, the pressing portion 18f of the operating lever member 18 is simply pressed with a predetermined pressing force P or more. By pressing, it is possible to release the engagement between the engaging portion 18d of the urging arm portion 18e of the operation lever member 18 and the engagement groove 10f of the rotary shaft 10, so that the sliding operation of the operation lever member 18 is performed. At this time, due to the locking groove taper portion 10g of the rotating shaft 10, the engaging portion 18d of the urging arm portion 18e of the operating lever member 18 is smoothly moved from the locking groove 10f of the rotating shaft 10 to the proximal end portion 10c of the tapered portion 10e. Since the locking is released and the locking is released, the removal work of the fan 8 (rotary shaft attaching / detaching device 12) and the rotating shaft 10 can be facilitated.

  Further, according to the fan device 1 according to the present embodiment, when the engaging portion 18d of the urging arm portion 18e of the operation lever member 18 is fitted into the locking groove 10f of the rotating shaft 10, the urging force of the operation lever member 18 is increased. Since the engaging portion 18d of the arm portion 18e comes into contact with the groove surface of the locking groove 10f of the rotating shaft 10 and a hitting sound is generated, the fan 8 (the rotating shaft attaching / detaching device 12) It is possible to reliably grasp that the attachment (locking) with the rotary shaft 10 has been completed.

It is a schematic perspective view which shows the system kitchen provided with the range hood with which the fan apparatus of embodiment of this invention was integrated. It is the disassembled perspective view which decomposed | disassembled the fan apparatus of embodiment of this invention, and was seen from diagonally downward. It is the perspective view which looked at the rotating shaft attachment / detachment apparatus in the fan apparatus of embodiment of this invention from diagonally downward. It is the top view which looked at the state which cut a part of casing member horizontally so that the inside can be seen in the rotating shaft attachment / detachment apparatus of the fan apparatus of embodiment of this invention. It is a longitudinal cross-sectional view which shows the rotating shaft attachment / detachment apparatus in the fan apparatus of embodiment of this invention. It is the expansion perspective view which expanded the operation lever member and rotation-shaft part of the rotating shaft attachment / detachment apparatus in the fan apparatus of embodiment of this invention, and was seen from diagonally downward. It is the enlarged view which expanded the part of the operation lever member and rotation shaft of the rotating shaft attachment / detachment apparatus in the fan apparatus of embodiment of this invention, and was seen from the horizontal direction. It is a state explanatory view showing typically the relation of mutual operation and position of a rotating shaft attaching / detaching device and a rotating shaft in a step of attaching / detaching the rotating shaft attaching / detaching device and the rotating shaft in the fan device according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fan apparatus 2 System kitchen 4 Cooking device 6 Range hood 8 Fan 10 Rotating shaft 12 Rotating shaft attaching / detaching device 14 Casing member 16 Fixing member 18 Operation lever member

Claims (4)

A fan device for ventilating a room,
A rotating shaft having a locking groove formed along the circumferential surface;
A fan removably attached to the rotating shaft,
A rotary shaft attaching / detaching device provided on the fan and detachably holding the rotary shaft;
The rotary shaft attaching / detaching device includes a fixed end portion, one end portion of which is fixed, an engaging portion that extends from the fixed end portion and can be engaged with a locking groove of the rotating shaft, and the other end portion that is the rotating shaft. An operation lever member including a pressing portion that can be pressed toward the surface, and by pressing the pressing portion of the operation lever member, the engagement portion of the operation lever member and the engagement groove of the rotating shaft are engaged with each other. A fan device characterized by being configured to be released.   The operation lever member includes the fixed end portion and the engagement portion, and an urging arm portion in which the engagement portion is urged against the rotation shaft by a predetermined urging force, and the engagement of the urging arm portion. 2. A pressing arm portion which is bent so as to surround the rotation shaft from a joint portion and extends in a substantially right angle direction with respect to the biasing arm portion, and a distal end portion of the pressing arm portion forms the pressing portion. Fan device.   3. The fan device according to claim 1, wherein the rotating shaft includes a tapered portion formed in a tapered shape from a proximal end portion adjacent to the locking groove to a distal end portion thereof.   The rotation shaft includes a locking groove taper portion formed in a taper shape so that a portion that transitions from the proximal end portion of the tapered portion toward the locking groove is narrowed inward in the radial direction. 3. The fan device according to 3.

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