JP5298371B2 - 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, 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 provided slidably in a perpendicular direction to the rotary shaft and having a roughly egg shape insertion hole 18d into which the rotary shaft is inserted formed thereon, and an energizing member 20 abutting on the operation lever member and energizing the operation lever in a direction energizing and locking the rotary shaft into the insertion hole when the rotary shaft is inserted in the insertion hole 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 ventilation device 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, wherein the rotary shaft, a fan removably attached to the rotary shaft, and the rotary shaft provided on the fan are attached and detached. A rotating shaft attaching / detaching device that holds the rotating shaft, and the rotating shaft attaching / detaching device is provided so as to be slidable in a direction perpendicular to the rotating shaft, and the insertion of the rotating shaft is possible. An operation lever member having a hole formed therein and provided in contact with the operation lever member. When the rotation shaft is inserted into the insertion hole of the operation lever member, the rotation shaft is biased to the insertion hole. A biasing member that biases the operation lever member in a direction to be locked, and the rotation shaft has a tapered portion formed in a tapered shape with one end portion thereof extending from the proximal end toward the distal end in the axial direction. And at the base end of this taper And the rotation shaft attaching / detaching device further includes a casing member that accommodates the operation lever member and the biasing member, The front end portion is a fan device configured to protrude to the outside of the casing member when the locking groove of the rotating shaft is locked in the insertion hole of the operation lever member .
In the present invention configured as described above, when removing the fan from the rotating shaft, the operating lever member slides in a direction opposite to the direction in which the biasing member of the rotating shaft attaching / detaching device biases the operating lever member. By operating, the engagement between the insertion hole of the operation lever member and the rotating shaft is released. On the other hand, when the fan is attached to the rotating shaft, the rotating shaft is inserted into the insertion hole of the operation lever member of the rotating shaft attaching / detaching device so that the rotating shaft is biased and locked in the insertion hole. The biasing member biases the operation lever member, and the rotation shaft is locked by the insertion hole of the operation lever member. As a result, by sliding the operation lever member of the rotary shaft attaching / detaching device, the fan and the rotary shaft can be easily and reliably attached and detached without using a tool. Further, during use of the fan device, the rotation shaft can be reliably locked by the insertion hole of the operation lever member of the rotation shaft attaching / detaching device, so that the fan is inadvertently detached from the rotation shaft during operation of the fan device. Can be prevented.
Further, when the fan is attached to the rotating shaft, the tapered portion of the rotating shaft makes it easy to insert the rotating shaft into the insertion hole of the operation lever member of the rotating shaft attaching / detaching device. Also, once the tapered portion of the rotating shaft is inserted into the insertion hole of the operating lever member, the inserting hole of the operating lever member is urged by the biasing member to the tapered portion of the rotating shaft, and the tapered portion of the rotating shaft to be inserted is inserted. Since the operating lever member can be easily slid so that the insertion hole of the operating lever member is pressed against the tapered portion of the rotating shaft along the axial direction of the shaft, the fan and the rotating shaft can be easily connected without using a tool. It can be easily and reliably attached and detached.
Furthermore, when the fan is attached to the rotating shaft, once the tapered portion of the rotating shaft is once inserted into the insertion hole of the operating lever member of the rotating shaft attaching / detaching device, the insertion hole of the operating lever member is tapered by the biasing member. The insertion hole of the operating lever member is always pressed against the tapered portion of the rotating shaft until the proximal end portion is inserted into the inserting hole of the operating lever member from the distal end portion of the tapered portion of the rotating shaft. Become. When the insertion state of the tapered portion of the rotating shaft is further advanced from this state, the insertion hole of the operating lever member gets over the proximal end portion of the tapered portion of the rotating shaft and fits into the locking groove of the rotating shaft. Can be securely locked to the insertion hole of the operation lever member. In addition, even when the fan device is in use, since the locking groove of the rotating shaft is locked by the insertion hole of the operation lever member of the rotating shaft attaching / detaching device, the fan is inadvertently disconnected from the rotating shaft during operation of the fan device. It can be prevented from coming off. Further, when the insertion hole of the operation lever member passes over the proximal end portion of the tapered portion of the rotating shaft and fits into the locking groove, a hitting sound that the insertion hole of the operating lever member contacts the locking groove of the rotating shaft is generated. Although it occurs, it is possible to reliably grasp that the attachment (locking) of the fan and the rotating shaft has been completed by hearing this hitting sound.
Furthermore, when the locking groove of the rotating shaft is locked in the insertion hole of the operation lever member of the rotating shaft attaching / detaching device, the distal end portion of the rotating shaft is projected from the outside of the casing member of the rotating shaft attaching / detaching device, The tip of the rotating shaft can be visually recognized outside the casing member of the rotating shaft attaching / detaching device, and it is possible to reliably grasp that the attachment of the fan and the rotating shaft has been completed.

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 above, when the fan is attached to the rotating shaft, the tapered portion of the rotating shaft is inserted into the insertion hole of the operating lever member of the rotating shaft attaching / detaching device, and the insertion hole of the operating lever member is inserted into the rotating shaft. When the base end of the tapered portion is overcome, the insertion hole of the operating lever member is guided from the base end of the tapered portion toward the locking groove by the locking groove taper portion of the rotating shaft, and moves smoothly. The shaft can be smoothly and reliably locked by the insertion hole of the operation lever member. On the other hand, when removing the fan from the rotating shaft, the operating lever member is slid in the direction opposite to the direction in which the urging member of the rotating shaft attaching / detaching device urges the operating lever member. Although the locking between the insertion hole and the locking groove of the rotating shaft is released, when the operating lever member slides, the locking groove taper portion of the rotating shaft causes the insertion hole of the operating lever member to Since the guide is smoothly moved 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 guide member 16, an operation lever member 18, and an urging member 20.

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. doing.

Next, the rotating 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. The lower end portion 10b of the rotating 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).
Furthermore, as shown in FIG. 7, the diameter of the rotating shaft 10 is maximum at the base end portion 10c of the tapered portion 10e of the main body portion 10h and the lower end portion 10b at d1, and the diameter of the portion of the locking groove 10f is It is minimum at d2.

Next, details of each member of the rotary shaft attaching / detaching device 12 will be described.
First, the casing member 14 of the rotary shaft attaching / detaching device 12 accommodates the guide member 16, the operation lever member 18, and the urging member 20, and a screw ( (Not shown) or the like.
As shown in FIGS. 2, 3, and 5, a mounting confirmation hole 14 a is formed at the center of the lower surface of the casing member 14, and the lower end portion 10 b of the rotating shaft 10 is connected to the fan 8. The rotary shaft insertion hole 8d is inserted into the rotary shaft attaching / detaching device 12, and when the attachment to the rotating shaft attaching / detaching device 12 is completed, the lower end portion 10b of the rotating shaft 10 is attached to the casing member 14 for confirming the attachment 14a. And protrudes outward (downward) from the casing member 14.

Next, as shown in FIG. 2, the guide member 16 of the rotary shaft attaching / detaching device 12 is fixed inside the casing member 14. On the upper surface of the guide member 16, a guide groove 16a that is recessed downward and has a predetermined width for slidably holding an operation lever member 18, which will be described later, is formed. The operation lever member 18 extends along the guide groove 16a. Thus, it can slide in a direction perpendicular to the axial direction of the rotary shaft 10 (horizontal direction of the rotary shaft attaching / detaching device 12).
In addition, a long hole 16b is formed from the vicinity of the center of the guide groove 16a of the guide member 16 toward the inner end (see FIG. 2), and the lower end 10b of the rotary shaft 10 passes through the rotary shaft insertion hole 8d of the fan 8. When inserted into the rotary shaft attaching / detaching device 12, the lower end portion 10b of the rotary shaft 10 can be inserted.

Next, as shown in FIGS. 2 to 7, the operation lever member 18 of the rotary shaft attaching / detaching device 12 includes a thin, thin plate portion 18 a made of metal, and an outer end portion and an inner end portion of the plate portion 18 a. Are provided with a pressing portion 18b and a biasing receiving portion 18c, respectively.
The pressing portion 18b of the operating lever member 18 is bent so that the outer end of the plate portion 18a protrudes upward, and the user can press the surface of the protruding pressing portion 18b with a finger or the like.
The urging receiving portion 18c of the operating lever member 18 is urged outward in the axial direction (longitudinal direction) of the plate portion 18a by a leaf spring 20b that forms an urging member 20 described later in detail. When the pressing portion 18a of the operating lever member 18 is pressed by the user with a predetermined pressing force exceeding the urging force of the urging member 20, the operating lever member 18 itself rotates along the guide groove 16a of the guide member 16. It slides inward in the vertical direction with respect to the axial direction of the shaft 10 (inward in the horizontal direction of the rotary shaft attaching / detaching device 12) and is pushed into the casing member 14.

Furthermore, the lower end portion 10b of the rotating shaft 10 is rotated at the center portion of the plate portion 18a of the operating lever member 18 when the rotating shaft insertion hole 8d of the fan 8 is inserted into the rotating shaft attaching / detaching device 12. An insertion hole 18d into which the lower end portion 10b of the shaft 10 can be inserted is formed.
The insertion hole 18d is formed in an approximately oval shape from the center portion of the plate portion 18a toward the inner end portion, but has a shape that is substantially symmetrical with respect to the central axis C in the longitudinal direction of the operation lever member 18. (See FIG. 4).

  Here, as shown in FIG. 4 and FIG. 6, assuming that the representative positions where the inner peripheral surface of the insertion hole 18d changes from a substantially linear surface to a curved surface are point P, point Q, point R, and point S, respectively. The size of the peripheral surface portion 18e (hereinafter referred to as "PQ peripheral surface portion 18e") of the PQ section formed along the point Q from the point P located on the central portion side of the plate portion 18a on the inner peripheral surface of the insertion hole 18d, That is, the dimension of the straight line connecting the points P and Q is designed to be larger than the maximum diameter d1 of the rotating shaft 10.

On the other hand, the peripheral surface portion 18f (hereinafter referred to as “RS peripheral surface portion 18f”) of the RS section formed along the point S from the point R located on the inner end surface side of the plate portion 18a on the inner peripheral surface of the insertion hole 18d. The size, that is, the dimension of the straight line connecting the point R and the point S is smaller than the maximum diameter d1 of the rotating shaft 10 and is approximately equal to or equal to the diameter d2 in the portion of the locking groove 10f of the rotating shaft 10. (See FIGS. 4 and 7 in particular).
Incidentally, the peripheral surface portion 18g of the PS section formed along the point S from the point P in the inner peripheral portion of the insertion hole 18d (hereinafter referred to as “PS peripheral surface portion 18g”), and formed along the point Q from the point Q. The peripheral surface portion 18h of the QR section (hereinafter referred to as “QR peripheral surface portion 18h”) is a substantially linear peripheral surface.

Next, as shown in FIGS. 2, 4, and 5, the urging member 20 of the rotary shaft attaching / detaching device 12 moves the operation lever member 18 by the guide member 16 disposed below the operation lever member 18. A plate portion 20a is provided so as to be slidably held from above. An inner end portion of the plate portion 20a is bent downward, and a leaf spring 20b is provided at a portion bent downward.
Further, the leaf spring 20b is arranged so that the operation lever member 18 is in contact with the urging receiving portion 18c of the operation lever member 18 in a state where the operation lever member 18 is assembled between the guide member 16 and the urging member 20. A contact portion 20c curved in a convex shape toward the bias receiving portion 18c is provided.

Furthermore, when the lower end portion 10b of the rotary shaft 10 is inserted into the rotary shaft attaching / detaching device 12 through the rotary shaft insertion hole 8d of the fan 8 near the center of the plate portion 20a of the biasing member 20, An insertion hole 20d through which the lower end portion 10b of the rotating shaft 10 can be inserted is formed.
In addition, the insertion hole 20d of the urging member 20, the rotation shaft insertion hole 8d of the fan 8, the hole 14a for confirming the attachment of the casing member 14, the long hole 16b of the guide member 16, and the insertion hole 18d of the operation lever member 18 are provided. Each communicates with each other so that the lower end portion 10b of the rotating shaft 10 can be inserted.

  Further, the contact portion 20c of the leaf spring 20b is such that when the rotary shaft 10 is completely attached to the rotary shaft attaching / detaching device 12, the entire leaf spring 20b is subjected to bending deformation to some extent. A direction (hereinafter referred to as “locking direction”) in which the RS peripheral surface portion 18f of the insertion hole 18d of the operation lever member 18 is engaged with and locked in the locking groove 10f of the rotating shaft 10 and is in contact with the urging receiving portion 18c. The biasing receiving portion 18c of the operation lever member 18 is biased with a predetermined biasing force.

  On the other hand, when the pressing portion 18b of the operating lever member 18 is pressed and the pressing force exceeds a predetermined biasing force by the leaf spring 20b biasing the biasing receiving portion 18c of the operating lever member 18 in the locking direction. The direction in which the RS peripheral surface portion 18f of the insertion hole 18d of the operation lever member 18 is disengaged from the engagement with the engagement groove 10f of the rotating shaft 10 and the engagement between the two is released (hereinafter referred to as “the engagement release direction”). The operating lever member 18 slides and is pushed into the casing member 14.

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 diagram 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 state before attaching both the rotating shaft attaching / detaching device and the rotating shaft is referred to as state (O), and the state during the attachment of both is referred to as state (I) and state (II) in chronological order, A state in which the attachment of both is completed is referred to as state (III), and a state in which the removal of both is started is referred to as state (O ′). In particular, in the state diagrams other than the state (III) in which the rotary shaft attaching / detaching device is completely attached to the rotating shaft, only the relationship between the operation lever member and the rotating shaft of the rotating shaft attaching / detaching device is representatively illustrated. Yes.

First, before the rotating shaft attaching / detaching device 12 is attached to the rotating shaft 10, the lower end portion 10 b of the rotating shaft 10 is inserted into the rotating shaft insertion hole 8 d of the fan 8. In order from the top inside, the insertion hole 20d of the biasing member 20, the insertion hole 18d of the operation lever member 18, the long hole 16b of the guide member 16, and the mounting confirmation hole 14a of the casing member 14 can be inserted. (See state (O) in FIG. 8).
At this time, the urging receiving portion 18c of the operating lever member 18 is applied with a predetermined urging force F0 toward the outside of the rotary shaft attaching / detaching device 12 (in the direction of arrow α in FIG. 8) by the leaf spring 20b of the urging member 20. It is energized.

Next, when the distance between the tapered portion 10e of the lower end portion 10b of the rotating shaft 10 and the rotating shaft attaching / detaching device 12 is gradually reduced from the state shown in the state (O) of FIG. 8, the lower end portion 10b of the rotating shaft 10 is gradually reduced. The tapered portion 10e passes through the insertion hole 20d of the urging member 20 of the rotary shaft attaching / detaching device 12, and is inserted into the insertion hole 18d of the operating lever member 18 from the distal end portion 10d of the tapered portion 10e of the rotary shaft 10.
At this time, the tip portion 10d of the tapered portion 10e of the rotating shaft 10 itself is inserted without contacting any of the peripheral surface portions 18e, 18f, 18g, 18h of the insertion hole 18d of the operating lever member 18, but the rotating shaft 10 A part of the side surface forming the tapered shape from the proximal end portion 10c to the distal end portion 10d of the tapered portion 10e contacts the RS peripheral surface portion 18f of the substantially oval-shaped insertion hole 18d of the operation lever member 18 so as to contact each other. (See state (I) in FIG. 8).

At the same time, the RS peripheral surface portion 18f of the insertion hole 18d of the operating lever member 18 is in contact with the side surface of the tapered portion 10e of the rotating shaft 10 so that the inner side of the rotating shaft attaching / detaching device 12 (the arrow in FIG. 8). in the direction of β) with a pressing force f1.
Then, 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 RS peripheral surface portion 18f of the insertion hole 18d of the operation lever member 18 come into contact with each other. Moves toward the base end 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 is the RS peripheral surface portion of the insertion hole 18d of the operating lever member 18. The pressing force f1 that presses 18f to the inside of the rotary shaft attaching / detaching device 12 (in the direction of arrow β in FIG. 8) also gradually increases. When the pressing force f1 exceeds the urging force F0 on the outside (in the direction of arrow α in FIG. 8) of the rotating shaft attaching / detaching device 12 by the leaf spring 20b of the urging member 20, the operating lever member 18 It slides inward (in the direction of arrow β in FIG. 8) (see state (I) in FIG. 8).

  Next, from the state shown in the state (I) of FIG. 8, the insertion state of the tapered portion 10 e of the rotating shaft 10 further proceeds, and the proximal end portion 10 c of the tapered portion 10 e of the rotating shaft 10 is inserted into the operation lever member 18. When the position of the hole 18d is reached, the proximal end portion 10c of the tapered portion 10e of the rotary shaft 10 comes into contact with the PS peripheral surface portion 18g and the QR peripheral surface portion 18h of the insertion hole 18d of the operation lever member 18 (a state ( The operating lever member 18 is attached to and detached from the rotating shaft with a pressing force f2 (f2> f1) larger than the pressing force f1 that presses the operating lever member 18 inside the rotating shaft attaching / detaching device 12 (in the direction of arrow β in FIG. 8). The operation lever member 18 is slid inwardly (in the direction of arrow β in FIG. 8) of the rotary shaft attaching / detaching device 12 (in the state (II in FIG. 8). )reference).

  Next, from the state shown in the state (II) of FIG. 8, the insertion state of the tapered portion 10 e of the rotating shaft 10 further proceeds, and the proximal end portion 10 c of the tapered portion 10 e of the rotating shaft 10 is inserted into the operation lever member 18. When passing through the position of the hole 18d, if the insertion hole 18d of the operating lever member 18 is in contact with the proximal end portion 10c of the tapered portion 10e of the rotating shaft 10 and then climbs over the proximal end portion 10c, the state (II) The pressing force f2 that presses the operation lever member 18 at the inner side of the rotary shaft attaching / detaching device 12 (in the direction of arrow β in FIG. 8) is released. Then, due to the biasing force F0 of the leaf spring 20b of the biasing member 20 that biases the biasing receiving portion 18c of the control lever member 18, the control lever member 18 moves outside the rotary shaft attaching / detaching device 12 (in the direction of arrow α in FIG. 8). ), The insertion hole 18d of the operation lever member 18 is guided toward the locking groove 10f along the tapered surface of the locking groove taper portion 10g of the rotating shaft 10 and smoothly moves. It fits into the locking groove 10f. At the time of this fitting, a hitting sound is generated when the RS peripheral surface portion 18f of the insertion hole 18d of the operating lever member 18 abuts almost entirely on the groove surface of the locking groove 10f of the rotary shaft 10. When the sound is heard, 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 state (III) in FIG. 8).

When the insertion hole 18d of the operation lever member 18 and the locking groove 10f of the rotating shaft 10 are completely fitted, the insertion hole 18d of the operation lever member 18 is applied by the biasing force F0 of the leaf spring 20b of the biasing member 20. The RS peripheral surface portion 18f is urged so as to be in contact with the groove surface of the locking groove 10f of the rotating shaft 10 over almost the whole, and the locking groove 10f of the rotating shaft 10 is completely locked. And the rotating shaft 10 will be in the state completely fixed to the axial direction (refer FIGS. 4-7 and the state (III) of FIG. 8).
Further, when the attachment of the fan 8 (rotating shaft attaching / detaching device 12) and the rotating shaft 10 is completed, the tip 10d of the tapered portion 10e of the rotating shaft 10 passes through the hole 14a for confirming the attachment of the casing member 14, and the casing member 14 It will be in the state which protruded to the outer side (downward) (refer FIG.3 and FIG.5).

On the other hand, when the fan 8 (rotary shaft attaching / detaching device 12) and the rotating shaft 10 are completely attached (see state (III) in FIG. 8), the fan 8 (rotating shaft attaching / detaching device 12) is removed from the rotating shaft 10. When the pressing portion 18b of the operating lever member 18 is pressed toward the inside of the rotary shaft attaching / detaching device 12 (in the direction of arrow β in FIG. 8) with a pressing force F that is greater than the urging force F0 of the leaf spring 20b, the operating lever The member 18 slides inside the rotary shaft attaching / detaching device 12 (in the direction of arrow β in FIG. 8), and the RS peripheral surface portion 18f of the insertion hole 18d of the operation lever member 18 and the locking groove 10f of the rotary shaft 10 are fitted. Is released, the locking groove 10 of the rotating shaft 10 is unlocked, and the fan 8 (the rotating shaft attaching / detaching device 12) and the rotating shaft 10 are started to be detached (state (O ′) in FIG. 8). reference).
When the transition from the state (III) to the state (O ′) is started, the pressing portion 18b of the operating lever member 18 is pressed and the operating lever member 18 is moved to the inside of the rotary shaft attaching / detaching device 12 (indicated by the arrow β in FIG. 8). ), The insertion hole 18d of the operating lever member 18 is smoothly passed from the locking groove 10f of the rotating shaft 10 to the proximal end portion 10c of the tapered portion 10e by the locking groove taper portion 10g of the rotating shaft 10. The guide is moved and the lock is released.
Then, the PQ peripheral surface portion 18e of the insertion hole 18d of the operation lever member 18 larger than the maximum diameter d1 of the rotation shaft 10 approaches the side surface of the rotation shaft 10, and the base end portion 10c of the tapered portion 10e of the rotation shaft 10 is the operation lever. It will be in the state which can pass completely through the insertion hole 18d of the member 18 (refer the state (O ') of FIG. 8).

  When the rotary shaft attaching / detaching device 12 is gradually pulled away from the lower end portion 10b of the rotating shaft 10 in the state (O ′) of FIG. 8, the relationship between the rotating shaft 10 and the operation lever member 18 of the rotating shaft attaching / detaching device 12 is obtained. In order of both removal processes, the state (O ′) shifts from the state (II) to the state (II). After the state (I), the removal is finally completed in the state (O).

  According to the fan device 1 according to the above-described embodiment of the present invention, the fan 8 (the rotary shaft attaching / detaching device 12) can be simply used without using a tool by a simple method of sliding the operation lever member 18 of the rotating shaft attaching / detaching device 12. ) And the rotary shaft 10 can be easily and reliably attached and detached. Further, when the fan device 1 is in use, the rotating shaft 10 can be reliably locked by the insertion hole 18d of the operation lever member 18 of the rotating shaft attaching / detaching device 12, so that the fan 8 ( The rotating shaft attaching / detaching device 12) can be prevented from being inadvertently detached from the rotating shaft 10.

  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 in the insertion hole 18d of the operation lever member 18, the attachment work of the fan 8 (rotary shaft attaching / detaching device 12) and the rotating shaft 10 can be facilitated.

  Furthermore, according to the fan device 1 according to the present embodiment, when the fan 8 (rotating shaft attaching / detaching device 12) is removed from the rotating shaft 10, the pressing portion 18b of the operating lever member 18 is simply pressed with a predetermined pressing force or more. By doing so, the engagement between the insertion hole 18d of the operation lever member 18 and the engagement groove 10f of the rotation shaft 10 can be released, so that the engagement of the rotation shaft 10 can be performed during the sliding operation of the operation lever member 18. Since the insertion groove 18d of the operating lever member 18 is smoothly guided and moved from the locking groove 10f of the rotating shaft 10 to the base end portion 10c of the tapered portion 10e by the locking groove taper portion 10g, the locking is released. The removal operation of the (rotating 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, once the tapered portion 10 e of the rotating shaft 10 is once inserted into the insertion hole 18 d of the operation lever member 18, the biasing member 20 causes the insertion hole 18 d of the operation lever member 18 to be inserted. The RS peripheral surface portion 18f is urged to the side surface of the tapered portion 10e of the rotating shaft 10, and the RS peripheral surface portion 18f of the insertion hole 18d of the operation lever member 18 along the axial direction of the tapered portion 10e of the rotating shaft 10 to be inserted. The operating lever member 18 can be easily slid in the direction perpendicular to the axial direction of the rotating shaft 10 so that the operating lever member 18 is pressed against the side surface of the tapered portion 10e of the rotating shaft 10. The fan 8 (the rotary shaft attaching / detaching device 12) and the rotary shaft 10 can be easily and reliably attached and detached easily by using a simple method of sliding the member 18 without using a tool.

  Furthermore, according to the fan device 1 according to the present embodiment, the insertion state of the tapered portion 10e of the rotating shaft 10 proceeds, and the proximal end portion 10c of the tapered portion 10e of the rotating shaft 10 is positioned at the insertion hole 18d of the operating lever member 18. When passing through the base end 10c from the state in which the insertion hole 18d of the operating lever member 18 is in contact with the base end 10c of the tapered portion 10e of the rotating shaft 10, the insertion hole 18d of the operating lever member 18 is inserted. Can be guided and smoothly moved toward the locking groove 10f along the tapered surface of the locking groove taper portion 10g of the rotating shaft 10, and can be smoothly fitted into the locking groove 10f of the rotating shaft 10. Can do. In addition, the rotating shaft 10 can be reliably locked to the insertion hole 18d of the operating lever member 18, and the fan 8 (the rotating shaft attaching / detaching device 12) is inadvertently removed from the rotating shaft 10 during the operation of the fan device 1. It can be prevented from coming off.

  Further, according to the fan device 1 according to the present embodiment, when the insertion hole 18d of the operation lever member 18 is fitted into the locking groove 10f of the rotary shaft 10, the RS peripheral surface portion 18f of the insertion hole 18d of the operation lever member 18 is Since a hitting sound is generated almost in contact with the groove surface of the locking groove 10f of the rotating shaft 10, the fan 8 (the rotating shaft attaching / detaching device 12) and the rotating shaft 10 are confirmed by checking the hitting sound. It is possible to reliably grasp the completion of the attachment (locking).

  Furthermore, according to the fan device 1 according to the present embodiment, when the attachment of the fan 8 (rotary shaft attaching / detaching device 12) and the rotary shaft 10 is completed, the tip 10d of the tapered portion 10e of the rotary shaft 10 is attached to the casing member 14. Since it will be in the state which penetrated the hole 14a for confirmation and protruded to the outer side (downward) of the casing member 14, the state in which the attachment of the fan 8 (rotary shaft attaching / detaching device 12) and the rotating shaft 10 is completed is the rotating shaft attaching / detaching device 12. It can be visually recognized and reliably grasped outside the casing member 14.

Moreover, in the fan apparatus 1 by this embodiment mentioned above, although the form provided with the leaf | plate spring 20b was demonstrated as an example of the urging | biasing member 20 of the rotating shaft attachment / detachment apparatus 12, it is not limited to such a form, this As a modification of the fan device of the embodiment, the present invention can also be applied to other forms of urging members.
FIG. 9 is the same as FIG. 4 showing a state in which a part of the casing member is cut in the horizontal direction so that the inside of the rotary shaft attaching / detaching device of the fan device according to the modification of the embodiment of the present invention can be seen. It is a top view. Here, in FIG. 9, the same parts as those of the rotary shaft attaching / detaching apparatus shown in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIG. 9, as an example of a fan device according to a modification of the present embodiment, the urging member 32 of the rotary shaft attaching / detaching device 30 may include a compression coil spring 32a.
That is, the compression coil spring in a state where a compression load is applied in advance between the urging receiving portion 18c of the operating lever member 18 and the spring holding portion 32b disposed at the outer end portion of the urging member 32 opposed thereto. By incorporating 32a, the outer end portion 32c of the compression coil spring 32a is held in contact with the spring holding portion 32b, and the inner end portion 32d of the compression coil spring 32a is held by the bias receiving portion 18c of the operating lever member 18. The operating lever member 18 may be urged toward the rotating shaft 10 side.

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 in the horizontal direction 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 explanatory drawing which showed typically the relationship of the mutual operation | movement and position of a rotating shaft attaching / detaching apparatus and a rotating shaft in the process of attaching / detaching the rotating shaft attaching / detaching apparatus and rotating shaft in the fan apparatus by embodiment of this invention. FIG. 5 is a plan view similar to FIG. 4, showing a state in which a part of the casing member is cut in the horizontal direction so that the inside of the rotary shaft attaching / detaching device of the fan device according to the modification of the embodiment of the present invention can be seen. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fan apparatus 2 System kitchen 4 Heating cooker 6 Range hood 8 Fan 10 Rotating shaft 12,30 Rotating shaft attaching / detaching apparatus 14 Casing member 16 Guide member 18 Operation lever member 20, 32 Energizing member

Claims (2)

A fan device for ventilating a room,
A rotation axis;
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 an operation lever member provided so as to be slidable in a direction perpendicular to the rotary shaft and having a substantially egg-shaped insertion hole into which the rotary shaft can be inserted, and the operation lever member When the rotation shaft is inserted into the insertion hole of the operation lever member, the operation lever member is urged in a direction in which the rotation shaft is urged and locked by the insertion hole. An urging member ,
The rotating shaft is formed such that one end portion thereof is tapered from the base end toward the outer end in the axial direction, and is tapered adjacent to the base end portion of the taper portion and inward in the radial direction. A locking groove,
The rotating shaft attaching / detaching device further includes a casing member that accommodates the operation lever member and the biasing member, and a locking groove of the rotating shaft is formed at an insertion hole of the operating lever member at a distal end portion of the rotating shaft. A fan device configured to project outward from the casing member when locked . 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. The fan device according to 1 .

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