KR101685054B1 - One-touch fitting device for fan - Google Patents

Abstract

It is an object of the present invention to provide a one-touch attaching / detaching device for a fan which can attach the fan to the motor shaft with one-touch and can stably maintain the fan and has excellent operability. An operating member 6 movably attached to the base 10 and an engaging portion engageable with the engaging portion of the motor shaft 4 are formed and the engaging portion is engaged with the engaging portion of the engaging portion of the motor shaft 4 in the direction of the motor shaft 4 A reciprocating engageable member 41 and a return spring 8 for returning the moved operating member 6 to its original position. (31, 32) for reciprocating and moving the engaging piece (41) in the direction of the motor shaft (4) by the movement of the operating member (6).

Description

{ONE-TOUCH FITTING DEVICE FOR FAN}

The present invention relates to a detachable device used to detach a fan such as a range hood of a kitchen by one-touch with respect to a motor shaft of a fan motor.

Generally, in order to attach the fan of the range hood to the fan motor, the screw portion of the motor shaft of the fan motor is passed through the ceiling plate portion of the fan and the nut of the left screw is screwed tightly to the end of the screw portion. For this reason, in addition to the need to rotate the nut with one hand while holding the fan with one hand, it is necessary to work while avoiding the countertop provided under the range hood, There is a difficult problem. In view of the above, Patent Document 1 proposes a conventional fan attaching / detaching device capable of attaching a fan with one-touch.

In this conventional fan attaching / detaching device, an anti-rotation engagement pin and an annular locking groove are provided on a motor shaft of a fan motor, and a boss A holding portion which is engaged with the engagement groove of the motor shaft by a pressing force of the spring to keep the fan in a slip-off state, and a holding portion which moves the holding portion against the pressing force of the spring And a releasing member for releasing the engagement between the holding portion and the locking groove.

In this conventional fan attaching / detaching device, the motor shaft of the fan motor is inserted into the boss portion of the fan, and the engaging groove of the motor shaft is engaged with the holding portion of the fan, thereby attaching the fan to the motor shaft of the fan motor. On the other hand, the holding portion is moved by operating the releasing member, and the fan is released from the motor shaft by releasing the engagement between the holding portion and the locking groove. As a result, the attachment and detachment of the fan to / from the motor shaft can be performed with one-touch, and workability of mounting and replacement of the fan can be improved.

Patent Document 1: JP-A-2009-270550

However, in the conventional fan attaching / detaching apparatus, there is a problem that it can not be held stably because the locking groove is held from one side to the holding portion. Further, since the spring for pressing the holding portion, the holding portion and the releasing member are arranged in a straight line passing through the motor shaft, it is necessary to use a strong spring in order to prevent the holding state from being easily released. A large force is required for the operation of releasing it, and the operability is deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a one-touch attachment / detachment device of a fan capable of stably mounting a fan with respect to a motor shaft by one-touch, .

A one-touch detachment device of a fan of the present invention is a one-touch detachment device for a fan that is attached to a motor shaft by being freely detachably attached to the motor shaft by inserting the motor shaft of the fan motor for rotating the fan and connects the fan to the motor shaft, An operating member having a base fixed to the inside of the cover fixed to the fan, a guide portion movably attached to the base, and an operating portion, An engaging piece provided on the base in a state in which the guide portion is reciprocally movable in the direction of the motor shaft and an operating member moved by operation of the operating portion, And a return spring for returning to the original position, wherein a portion of the engaging piece located between the guide portions and a corresponding portion The engaging portion is provided at the corresponding portion of the guide portion for reciprocating the engaging piece in the direction of the motor shaft by abutting against and separating from each other in accordance with the movement of the guide portion, And the engaging portion of the engaging piece is engaged with and disengaged from the engaged portion of the motor shaft.

In this invention, by moving the guide portion of the operating member, the engaging piece is retracted from the motor shaft inserting hole of the base via the engaging mechanism. In this state, the motor shaft of the fan motor is inserted into the motor shaft insertion hole, and then the operation of the operation member is released, so that the return spring returns the operation member to the original position. As a result of this return, the engaging piece advances in the direction of the motor shaft via the engaging mechanism, so that the engaged portion of the engaging piece and the engaged portion of the motor shaft are engaged with each other and can be mounted on the motor shaft.

By moving the operating member in the reverse direction with respect to the above-described mounting state on the motor shaft, the engaging piece is retracted from the motor shaft via the engaging mechanism, so that the engaging portion of the engaging piece and the engaging portion of the motor shaft are released. Thereby, it can be removed from the motor shaft. As a result, it is possible to attach and detach the motor shaft with a one-touch operation, and the fan can be held on the motor shaft in a stable state with good operability.

In the present invention, it is preferable that the engaging mechanism includes: an inner diameter changing portion in which the inner diameter of the guide portion is changed along the moving direction of the guide portion; a supporting convex portion formed on the outer surface of the guide portion; And a second engaging convex portion provided on the other side of the engaging piece, the engaging convex portion being capable of abutting on the supporting convex portion .

The engaging piece is engaged with the engaging portion of the motor shaft by advancing into the motor shaft inserting hole to prevent the engaging piece from advancing into the motor shaft inserting hole and by inserting the motor shaft into the motor shaft inserting hole It is preferable that a hold mechanism for releasing the advancement prevention is provided on the base.

By providing the holding mechanism in this manner, advancement of the engagement member into the motor shaft insertion hole is prevented, so that the motor shaft can be smoothly inserted into the motor shaft insertion hole without operating the operation member.

It is preferable that the guide portion of the operating member is rotatably or linearly movable with respect to the base.

With this structure, operability to the operating member is improved.

It is preferable that the engaging piece is composed of a locking piece having an engaging portion which is in contact with the guide portion while the guide portion is interposed therebetween and a engaging portion which is engageable with the engaged portion of the motor shaft, It is preferable that the sphere and the locking pawl contact each other via a tapered surface, and the tapered surfaces of the locking pawl and the operating pawl are inclined in a direction to prevent the locking pawl from coming off the motor shaft.

In this case, even if a force is applied in the direction in which the fan comes off from the motor shaft, the fan can be prevented from being detached, and a stable holding state can be maintained.

It is preferable that the engaging pieces are provided on at least one of both sides of the motor shaft insertion hole.

In this way, the engaging piece is engaged with at least one of both sides of the motor shaft, and the fan can be held in a stable state.

It is preferable that the engaging portion of the engaging piece and the engaging portion of the motor shaft are a threaded portion having a thread engaged with each other.

In this case, the conventional motor shaft using the left screw can be used as it is, and the motor shaft does not need to have a dedicated structure, so that the motor shaft can be versatile.

It is preferable that the locking hole is provided on the base through an elastic body that allows the locking hole to move along the axial direction of the motor shaft so as to engage the threaded portion of the locking hole with the threaded portion of the motor shaft.

By allowing the elastic body to move the locking hole along the axial direction of the motor shaft, the mountain / valley of the threaded portion of the locking hole can be automatically matched to the mountain / valley of the threaded portion of the motor shaft. Therefore, engagement between the lock mechanism and the motor shaft can be reliably performed.

According to the present invention, it is possible to attach the fan to the motor shaft with one-touch, and also to provide a one-touch detachable device for a fan which can stably maintain the fan and has excellent operability.

1 is a perspective view showing a state in which a one-touch detachable device of a fan according to an embodiment of the present invention is attached to a fan.
2 is a bottom view of a one-touch detachable device of a fan according to an embodiment of the present invention.
3 is a side view of the one-touch detachable device of the fan according to the first embodiment of the present invention.
Fig. 4 is a view seen in the direction of arrow A in Fig. 3. Fig.
5 is a cross-sectional view showing the unlocked state according to Embodiment 1 of the present invention, and is a cross-sectional view taken along line CC of Fig.
6 is a sectional view taken along the line BB of Fig. 2 showing the unlocked state according to the first embodiment of the present invention.
7 is a cross-sectional view corresponding to Fig. 5 showing a locked state of Embodiment 1 of the present invention.
Fig. 8 is a cross-sectional view corresponding to Fig. 6 showing a locked state according to Embodiment 1 of the present invention.
Fig. 9 is a cross-sectional view showing the state of the locking claw before engagement with the motor shaft according to the first embodiment of the present invention. Fig.
10 is a cross-sectional view showing the state of engagement of the locking claw with the motor shaft according to the first embodiment of the present invention.
11 is a cross-sectional view (locked state) in which the one-touch detachable device of the fan of the second embodiment of the present invention is cut in a plane including the motor axis.
12 is a sectional view taken along line DD of Fig.
13 is a cross-sectional view (unlocked state) in which the one-touch detachable device of the fan according to the second embodiment of the present invention is cut along the plane including the motor axis.
14 is a sectional view taken along line EE of Fig.
Fig. 15 is a sectional view of the one-touch detachable device of the fan according to the third embodiment of the present invention before attachment to the motor shaft, and is a sectional view corresponding to the BB line in Fig. 2;
16 is a cross-sectional view showing an initial state in which the motor shaft is inserted in the third embodiment;
17 is a cross-sectional view showing the insertion end state of the motor shaft in the third embodiment.
18 is a cross-sectional view showing the state of attachment to the motor shaft in the third embodiment.
19 is a sectional view showing an incomplete attachment state to the motor shaft in the third embodiment.
20 is a plan view showing a one-touch detachable device of a fan according to a fourth embodiment of the present invention.
21 is a cross-sectional view taken along line FF of Fig.
22 is a sectional view taken along the line GG in Fig. 21 showing a state before attachment to the motor shaft in Embodiment 4. Fig.
Fig. 23 is a sectional view taken along the line GG in Fig. 21 showing a state of attachment to the motor shaft in the fourth embodiment. Fig.
Fig. 24 is a plan view showing a one-touch detachable device of a fan according to Embodiment 5 of the present invention. Fig.
25 is a sectional view taken along the line HH in Fig.
26 is a sectional view taken along the line II in Fig. 25 showing the state before attachment to the motor shaft in Embodiment 5. Fig.
Fig. 27 is a sectional view taken along line II in Fig. 25 showing a state of attachment to the motor shaft in the fifth embodiment. Fig.
28 is a plan view showing a one-touch detachable device of the fan according to the sixth embodiment of the present invention.
29 is a sectional view taken along the line JJ in Fig.
Fig. 30 is a cross-sectional view taken along the line KK in Fig. 29 showing the state before attachment to the motor shaft in the sixth embodiment.
Fig. 31 is a cross-sectional view taken along the line KK in Fig. 29 showing the attachment state to the motor shaft in the sixth embodiment.
Fig. 32 is a cross-sectional view of the one-touch detachable device of the fan according to the seventh embodiment of the present invention, and is a cross-sectional view corresponding to the BB line in Fig. 2;
33 is an enlarged sectional view of Fig.
Fig. 34 is a cross-sectional view showing a one-touch detachable device of a fan according to an eighth embodiment of the present invention, and is a cross-sectional view corresponding to Fig. 15. Fig.
Fig. 35 is a cross-sectional view of the one-touch detachable device of the fan according to the ninth embodiment of the present invention, and is a cross-sectional view corresponding to Fig. 30. Fig.

(Embodiment 1)

Fig. 1 shows a state in which the one-touch detachable device 1 of the fan according to the embodiment of the present invention is attached to the fan 2. Figs. 2 to 10 show the one- .

The fan 2 can be used, for example, as a range hood, and is attached to the fan motor 3 of the range hood so that the fan 2 rotates. As shown in Fig. 1, the motor shaft 4 is suspended from the fan motor 3, and the motor shaft 4 is inserted into the one-touch detachable device 1, And the threaded portion 4a on the outer circumferential surface of the portion is engaged with the one-touch detachable device 1. The rotation preventing pins 4b protrude perpendicularly to the axial direction of the motor shaft 4. The rotation preventing pins 4b are provided on the engaging concave portions provided on the ceiling plate 2a side of the fan 2 So that the fan 2 and the rotation preventing pin 4b engage with each other and rotate by the fan motor 3.

The fan 2 uses a sirocco fan in which a plurality of blades 2c are attached along the circumferential direction between a circular ceiling plate 2a and a circular ring body 2b below the ceiling plate 2a. The one-touch detachable device 1 of this embodiment is attached to the lower surface of the ceiling plate portion 2a of the fan 2 so as to attach and detach the fan 2 to and from the motor shaft 4 of the fan motor 3. [

Fig. 2 is a bottom view of the one-touch detachable device 1, Fig. 3 is a side view, Fig. 4 is a view seen from arrow A direction in Fig. 3, Fig. 5 is a cross- BB line sectional view. Figs. 5 and 6 are cross-sectional views showing the unlocked state, Figs. 7 and 8 are cross-sectional views showing the locked state, and Figs. 9 and 10 are cross-sectional views illustrating engagement with the motor shaft 4.

1 to 6, the one-touch detachable device 1 includes a cover 5, a base 10, an operating member 6, a return spring 8, an elastic body 14, 13 and an engaging piece 41 composed of the action openings 15, 16.

The cover 5 is formed in a thin plate shape having a receiving portion 5a and a flange portion 5b around the receiving portion 5a and the flange portion 5b is formed on the ceiling of the fan 2 Is fixed to the fan (2) by screwing a screw into a plurality of attachment holes (5c) formed in the flange portion (5b) while abutting against the plate portion (2a). The accommodating portion 5a is provided with the above-described base 10, the operating member 6, the return spring 8, the elastic body 14, the engaging pieces 12, 13 and the engaging pieces 15, (41) is accommodated.

The base 10 is fixed to the bottom of the receiving portion 5a of the cover 5 by a rivet or the like. In the base 10, a motor shaft insertion hole 10a through which the motor shaft 4 is inserted passes substantially at the center. As shown in Fig. 5, the motor shaft insertion hole 10a is formed in the circular shaft portion 10b of the base 10. On the circular shaft portion 10b of the base 10, the operating member 6 is displaceably (rotatably) attached.

The operating member 6 has a guide portion 22 and an operating portion 23 protruding outward from the guide portion 22. 5, the guide portion 22 has a ring shape surrounding the circular shaft portion 10b of the base 10 and is attached to the base 10 so as to be movable around the circular shaft portion 10b . In this embodiment, the guide portion 22 is attached to the base 10 so as to be rotatable in the forward / reverse direction about the circular shaft portion 10b, and the guide portion is rotatably moved in the forward / As shown in Fig. The forward rotational movement of the guide portion 22 (operating member 6) is the direction in which the operating member 6 rotates in the unlocking direction, and in this embodiment, it is the counterclockwise rotation. The rotational movement in the reverse direction is the direction in which the guide portion 22 (the operating member 6) rotates in the locking direction, and in this embodiment, the rotation in the clockwise direction.

The operating portion 23 of the operating member 6 is a portion operated to perform rotational movement in the forward direction and protrudes outward in the radial direction from the guide portion 22, As shown in Fig. In this case, the handle portion 25 is covered with the operating portion 23, so that the protruding length from the cover 5 is long, so that the operation on the operating portion 23 is facilitated. A knob 7 is formed on the cover 5 with respect to the operating portion 23 so that the knob 7 and the operating portion 23 (the knob portion 25) It is easy to carry out the moving operation.

A pair of locking openings 12 and 13 and a pair of operating openings 15 and 16 as engaging pieces 41 are accommodated in the circular shaft portion 10b of the base 10. One action member 15 is provided on the circular shaft portion 10b to correspond to the lock member 12 and the other action member 16 is provided on the circular shaft member 10b to correspond to the lock member 13. [ . Thick connection portions 12b and 13b are formed at the rear end portions of the respective locking holes 12 and 13 with respect to the action holes 15 and 16, 16 are engaged with each other in the engaged state, so that the locking members 12, 13 and the corresponding actuating members 15, 16 are connected.

The pair of action holes 15 and 16 are accommodated along the radial direction of the circular shaft portion 10b with the motor shaft insertion hole 10a therebetween. Threaded portions 12a and 13a engaging with and engaging with the threaded portion 4a of the motor shaft 4 are formed on the end surfaces of the respective locking holes 12 and 13 on the side of the motor shaft insertion hole 10a. The action holes 15 and 16 are attached to the circular shaft portion 10b of the base 10 so as to be linearly reciprocally movable only in the direction of the motor shaft 4. [ The lock portions 12 and 13 advance to the motor shaft 4 side so that the screw portions 12a and 13a engage with the threaded portion 4a of the motor shaft 4, The engagement with the threaded portion 4a of the motor shaft 4 is released.

In this embodiment, the locking holes 12 and 13 and the action openings 15 and 16 are provided on both sides of the base 10 with the motor shaft insertion hole 10a therebetween. By disposing the locking holes 12 and 13 and the action holes 15 and 16 on both sides of the motor shaft insertion hole 10a as described above, the threaded portion 4a of the motor shaft 4 inserted into the motor shaft insertion hole 10a Can be locked from both sides, so that a stable locked state can be obtained.

As shown in Fig. 6, each of the action openings 15 and 16 is formed in an inverted U-shape with an opening downward, and a ring-shaped guide portion 22 of the operating member 6 is inserted therein . As a result, the operating portions 15 and 16 are in a state in which the guide portion 22 of the operating member 6 is interposed therebetween. The engaging mechanisms 31 and 32 are formed at the portion between the operating portions 15 and 16 and the guiding portion 22 by placing the guide portion 22 therebetween.

The engaging mechanisms 31 and 32 are provided with first engaging convex portions 33 and 34 formed on one side (inside) of the operating portions 15 and 16 with the guide portion 22 interposed therebetween, And second engaging convex portions 35 and 36 formed on the other side (outer side) with the second engaging portion 22 therebetween. The engaging mechanisms 31 and 32 have inner diameter changing portions 37 and 38 formed on the inner surface of the guide portion 22 so as to correspond to the first engaging convex portions 33 and 34 and second engaging convex portions 35 and 35, 40 formed on the outer surface of the guide portion 22 so as to correspond to the guide portions 22, Each of the support convex portions 39 and 40 protrudes in the radial direction from the outer surface of the guide portion 22 and has a protruding end surface formed in a planar shape. Each of the inner diameter changing portions 37 and 38 has recesses 37a and 38a each having a large diameter and a plurality of recesses 37a and 38a having a gradually increasing diameter from both sides of the recesses 37a and 38a, , And 38b.

In the engaging mechanisms 31 and 32, the supporting convex portions 39 and 40 abut on the second engaging convex portions 35 and 36 of the action holes 15 and 16, And the lock holes 12 and 13 move in the direction away from the motor shaft 4 by the movement of the action holes 15 and 16 as shown in Fig. 5 and 6, the threaded portions 12a and 13a of the locking holes 12 and 13 are out of engagement with the threaded portion 4a of the motor shaft 4 to be in the unlocked state. On the other hand, when the operating member 6 rotates in the reverse direction (clockwise direction), the abutment between the supporting convex portions 39, 40 and the second engaging convex portions 35, 36 is released. The curved portions 37b and 38b continuing to the concave portions 37a and 38a having the larger diameter are formed in the inner diameter changing portions 37 and 38 of the guide portion 22 by the first engaging convex portions 33, 34). The curved surface portions 37b and 38b are smaller in diameter than the concave portions 37a and 38a having a larger diameter so that the curved surface portions 37b and 38b come into contact with the first engaging convex portions 33 and 34, The spheres 15 and 16 are pushed to move linearly in the direction of the motor shaft 4 and the locking holes 12 and 13 move linearly in the direction of the motor shaft 4 in accordance with the movement. 7 and 8, the threaded portions 12a and 13a of the locking holes 12 and 13 are engaged with the threaded portion 4a of the motor shaft 4 to engage with each other. Since the diameter of the curved surface portions 37b and 38b is gradually reduced, even if the diameter of the screw portion 4a of the motor shaft 4 is large, the locking portions 12 and 13 have threaded portions 12a and 13a It can move smoothly until it is in close contact with the threaded portion 4a of the motor shaft 4. With such an engagement, the one-touch detachable device 1 is attached to the motor shaft 4. [

In the above configuration, the locking members (12, 13) and the operating members (15, 16) are in contact with each other via the tapered surface. 6 and 8, tapered surfaces 12c and 13c are formed on the outer surfaces of the locking holes 12 and 13 and tapered surfaces 15c and 16c corresponding to the tapered surfaces 12c and 13c Are formed in the action openings 15 and 16, respectively. These tapered surfaces 12c, 13c, 15c, and 16c are inclined surfaces that gradually increase the distance from the motor shaft 4 along the inserting direction (downward direction) of the motor shaft 4. Even if the downward force (the force exerted from the motor shaft 4) acts on the one-touch detachable device 1, the lock holes 12 and 13 are pulled out of the motor shaft 4 It is blocked. As a result, the one-touch detachable device 1 does not move in the detached direction, and the detachment of the one-touch detachable device 1 in a state in which the one-touch detachable device 1 is stably mounted on the motor shaft 4 .

That is, when downward force (force exerted from the motor shaft 4) acts on the one-touch attaching / detaching device 1, the lock holes 12 and 13 are locked by the threaded portions 12a and 13a, 6 and 8) is received from the threaded portion 4a of the motor shaft 4 due to the engaging engagement with the threaded portion 4a of the motor shaft 4, However, since the tapered surfaces in contact with the action holes 15 and 16 are narrowed in the upward direction, the lock hole receives a force toward the center of the motor shaft 4, as shown in FIG. Therefore, the locking holes 12 and 13 are prevented from being disengaged from the motor shaft 4. [

In the attached state, the locking pawls 12 and 13 are pushed by the action holes 15 and 16 to receive the force in the direction of the motor shaft 4. However, as described above, The force in the direction of the motor shaft 4 received by the locking holes 12 and 13 is lower than the force in the downward direction (Figs. 6 and 7), since the distance from the motor shaft 4 gradually increases along the downward direction In the downward direction in Fig. 8). The screw portions 12a and 13a of the locking holes 12 and 13 are engaged with each other so as to push down the threaded portion 4a of the motor shaft 4 in a downward direction. That is, the locking members 12 and 13 receive a reaction force in the upward direction from the motor shaft 4, and eventually the fan 2 is subjected to a force to be pushed in the upward direction. At this time, the rotation preventing pins projecting from the motor shaft 4 are fitted into the engaging concave portions provided on the ceiling plate 2a side of the fan 2, Therefore, the fan is restricted from moving in the upward direction (upward in the plane in Figs. 6 and 8). Therefore, the upward reaction force received by the fan 2 from the motor shaft 4 effectively acts to push the fan 2 in the upward direction, so that the rattling of the fan in the attached state can be effectively suppressed.

As shown in Figs. 6 and 8, the elastic body 14 is disposed between the locking holes 12 and 13 and the base 10 such that the locking holes 12 and 13 are vertically disposed therebetween. That is, the elastic body 14 is disposed between the base 10 and the locking holes 12, 13 such that the elastic body 14 has the respective locking holes 12, 13 therebetween. As the elastic body 14, a coil spring is used, but the elastic body 14 may be formed by overlapping the diaphragm springs or by interposing the plate spring therebetween. By disposing the elastic body 14 in such a state that the locking members 12 and 13 are disposed between the upper and lower sides in this way, the locking members 12 and 13 can be moved in the up-down direction (the axial direction of the motor shaft 4) And is elastically supported. This allows the locking members 12 and 13 to move so that the mountain / valley of the threaded portions 12a and 13a engages with the mountain / valley of the threaded portion 4a of the motor shaft 4, (4a) can be reliably and easily performed.

9 shows a state in which the mountains / valleys of the screw portions 12a and 13a of the locking holes 12 and 13 do not coincide with the mountains / valley of the screw portion 4a of the motor shaft 4, Since the elastic body 14 elastically supports the locking holes 12 and 13 in the vertical direction, the locking holes 12 and 13 move so that the mountains / valleys coincide with each other. 10, the mountain / valley of the threaded portions 12a, 13a of the locking holes 12, 13 coincides with the mountain / valley of the threaded portion 4a of the motor shaft 4, 13a of the motor shaft 4 engage with the threaded portion 4a of the motor shaft 4 so that the locking holes 12, 13 are engaged with the motor shaft 4, 1 is mounted on the motor shaft 4.

One end of the return spring 8 is hooked on the base 10 and the other end of the hook 8b is hooked on the operating member 6 in a state where the return spring 8 is wound on the base 10. [ Thereby, the return spring 8 is pressed so that the operating member 6 is rotated in the locking direction (clockwise direction). Therefore, when the rotational movement of the operating member 6 in the unlocking direction is released, the operating member 6 automatically rotates in the locking direction by the urging force of the return spring 8. [

Next, the operation of the first embodiment will be described with reference to Figs. 5 to 8. Fig.

5 and 6 show a state in which the operating portion 23 (the handle portion 25) of the operating member 6 is rotated and moved in the forward (counterclockwise) direction. The supporting convex portions 39 and 40 of the guide portion 22 of the operating member 6 are rotated by the rotational movement of the operating portion 23 in the forward direction to the second engaging convex portions 15 and 16 of the operating holes 15 and 16, And the actuating members 15 and 16 are linearly moved in the direction of separating from the motor shaft 4. In this case, In this state, the first engaging convex portions 33 and 34 of the action holes 15 and 16 face the concave portions 37a and 38a having the larger diameter of the guide portion 22, The engaging convex portions 33 and 34 are not in contact with the guide portion 22. The locking members 12 and 13 move in the same direction due to the movement of the operating members 15 and 16 so that the screw portions 12a and 13a of the locking members 12 and 13 are inserted into the motor shaft insertion / And retreats from the hole 10a.

Therefore, in this state, the motor shaft 4 can be inserted into the motor shaft insertion hole 10a. After the motor shaft 4 is inserted, the operation of the operating member 6 to the operating portion 23 is released. The operating member 6 is rotated in the reverse direction (clockwise direction) by the urging force of the return spring 8 by the operation of the operating portion 23 being released. By this rotation, the supporting convex portions 39 and 40 of the guide portion 22 of the operating member 6 are moved from the abutment against the second engaging convex portions 35 and 36 of the action holes 15 and 16 It falls out.

When the operating member 6 (guide portion 22) rotates in the reverse direction (clockwise direction) again by the urging force of the return spring 8, the curved surface of the inner diameter changing portion 37 of the guide portion 22 The portions 37b and 38b abut on the first engaging convex portions 33 and 34 of the action holes 15 and 16, respectively. Since the curved surface portions 37b and 38b are smaller in diameter than the concave portions 37a and 38a having a larger diameter, the curved surface portions 37b and 38b are in contact with the first engaging convex portions 33 and 34, So that the spheres 15 and 16 are linearly moved in the direction of the motor shaft 4. The lock portions 12 and 13 linearly move in the direction of the motor shaft 4 in accordance with the movement of the motor shaft 4 so that the screw portions 12a and 13a of the lock holes 12 and 13, Engages with the threaded portion 4a of the motor shaft 4 and engages. 9 and 10, since the elastic members 14 elastically support the locking members 12 and 13 from the up and down directions at the time of engagement of the threaded portions 12a and 13a, The mountain / valley coincides with the mountain / valley of the threaded portion 4a of the motor shaft 4 so that they can be engaged with each other. The one-touch detachable device 1 is attached to the fan 2 by the engagement of the threaded portions 12a and 13a of the locking holes 12 and 13 with the threaded portion 4a of the motor shaft 4. [

The operating portion 23 (the handle 25) of the operating member 6 is rotationally moved in the counterclockwise direction with respect to the mounting state to the fan 2. [ 5 and 6 so that the locking members 12 and 13 linearly move so as to be separated from the motor shaft 4 so that the threaded portions 12a and 13a come into contact with the threaded portions 4a of the motor shaft 4 ). ≪ / RTI > As a result, the one-touch detachable device 1 can be removed from the fan 2.

According to the first embodiment, the actuating members 15 and 16 move the locking members 12 and 13 from the motor shaft insertion groove 10a of the base 10 by rotating the operating member 6 in the forward direction The motor shaft 4 can be inserted into the motor shaft insertion groove 10a. The operation members 15 and 16 move the locking members 12 and 13 to the motor shafts 12 and 13 by releasing the operation of the operating member 6 so that the return spring 8 returns the operating member 6 to the original position. The threaded portions 12a and 13a of the lock holes 12 and 13 and the threaded portion 4a of the motor shaft 4 engage with each other and can be mounted on the motor shaft 4a. Since the operating members 15 and 16 retract the locking members 12 and 13 from the motor shaft 4 by rotationally moving the operating member 6 in the forward direction, The engaging portions 12a and 13a of the motor shaft 4 and the screw portion 4a of the motor shaft 4 are disengaged and can be removed from the motor shaft 4. [ Thus, the motor shaft 4 can be attached and detached by one-touch operation. Moreover, since it is not necessary to perform machining for attachment and detachment to the motor shaft 4, it is possible to apply the present motor shaft to the conventional motor shaft using the left screw as it is. Thereby, the motor shaft does not need to have a dedicated structure, so that it can be versatile. In the retaining state, since the engaging pieces 41 comprising the action holes 15 and 16 and the locking holes 12 and 13 are fixed by the inner diameter changing portions 37 and 38 of the guide portion 22, The fan can be stably and firmly held in comparison with the conventional method of pressing it by the elastic force of the fan. That is to say, since the retaining portion provided in the motor shaft is pressed by the resilient force of a spring or the like to press the retaining portion into the retaining state, the retaining state is maintained by the elastic force of the spring or the like, According to the invention, since the movement of the engaging piece 41 is restricted by the inner diameter changing portions 37 and 38 of the guide portion 22, the holding state can be maintained more firmly.

In the first embodiment, the elastic members 14 are arranged above and below the respective locking holes 12, 13, but a structure in which one elastic member 14 is passed through the locking holes 12, 13 You can. In this case, a convex portion engaging with the elastic body 14 is formed in the locking holes 12 and 13, or a penetrating portion of the locking holes 12 and 13 in the elastic body 14 is fixed to the locking hole 12 13 may be engaged with each other and the penetrating portion of the locking holes 12, 13 in the elastic body 14 may be engaged with the locking holes 12, 13 by increasing the diameter. The locking members 12 and 13 and the actuating members 15 and 16 may be provided on either side of the motor shaft insertion hole 10a instead of on both sides of the motor shaft insertion hole 10a, Or more.

(Embodiment 2)

As shown in Figs. 11 to 14, the one-touch detachment device of the fan according to the second embodiment of the present invention is different from the first embodiment in that the engagement piece 41 is provided with two The engaging portion of the motor shaft 4 and the engaging portion of the engaging piece are formed into a threaded portion in the first embodiment, And the engaging portion 43 of the engaging piece 41 is inserted into the constricted portion 44 to hold the fan. Other components are basically the same as those of the one-touch attaching / detaching device of the first embodiment, so that the same reference numerals are used to omit redundant description.

Fig. 11 is a cross-sectional view (locked state) taken along a plane including the motor axis of the one-touch detachable device of the fan according to the second embodiment of the present invention. Fig. 12 is a cross- Fig. 14 is a cross-sectional view taken along the line EE of Fig. 13; Fig. 14 is a cross-sectional view (unlocked state) taken along the plane including the motor axis of the one-

11 and 13, the engaging portion 42 of the motor shaft 4 is formed by a constricted portion 44 whose diameter is reduced in a part of the motor shaft, And is engaged with the engaging portion 43 of the piece 41 by engagement.

A pair of engaging pieces 41 are accommodated in the circular shaft portion 10b of the base 10. The pair of engaging pieces 41 are received along the radial direction of the circular shaft portion 10b with the motor shaft insertion hole 10a therebetween. An engaging portion 43 is formed at the front end of the engaging piece 41 on the side of the motor shaft inserting hole 10a so as to engage with the constricted portion 44 of the engaging portion 42 of the motor shaft 4 . The engaging piece 41 is attached to the circular shaft portion 10b of the base 10 such that it can linearly reciprocate only in the direction of the motor shaft 4. [ The engaging portion 41 is engaged with the constricted portion 44 of the motor shaft 4 and the engaging piece 41 is engaged with the engaging portion 41 of the motor shaft 4, The engagement of the motor shaft 4 with the constricted portion 44 is released.

The engagement portion 43 formed at the front end of the engaging piece 41 on the motor shaft insertion hole 10a side is in contact with the line 44 contacting the constricted portion 44 of the motor shaft 4, And has a curved surface in conformity with the shape of the constricted portion (44). As a result, a large amount of contact surface is obtained, so that a stable engagement state can be obtained.

In this embodiment, the engagement pieces 41 are provided on both sides of the base 10 with the motor shaft insertion hole 10a therebetween. By disposing the engaging pieces 41 on both sides of the motor shaft insertion hole 10a as described above, it is possible to lock the motor shaft 4 inserted into the motor shaft insertion hole 10a from both sides of the engaged portion 42 of the motor shaft 4 Therefore, a stable locking state can be achieved.

As shown in Figs. 11 and 13, each of the engaging pieces 41 is formed in a U-shape with its rear side (the side far from the motor shaft) opened downward, and a ring- The guide portion 22 of the member 6 is inserted. Thus, the engaging pieces 41 are in a state in which the guide portion 22 of the operating member 6 is interposed therebetween. The engaging mechanisms 31 and 32 are formed at the portion between the engaging piece 41 and the guide portion 22 by placing the guide portion 22 therebetween.

The engaging mechanisms 31 and 32 are provided with first engaging convex portions 33 and 34 formed on one side (inside) of the engaging piece 41 with the guide portion 22 interposed therebetween, And second engaging convex portions 35 and 36 formed on the other side (outer side) between the first engaging convex portions 35 and 36. The engaging mechanisms 31 and 32 include inner diameter changing portions 37 and 38 formed on the inner surface of the guide portion 22 so as to correspond to the first engaging convex portions 33 and 34, And support convex portions 39, 40 formed on the outer surface of the guide portion 22 so as to correspond to the guide portions 22, Each of the support convex portions 39, 40 protrudes in the radial direction from the outer surface of the guide portion 22, and the projecting end face thereof is formed into a planar shape. Each of the inner diameter changing portions 37 and 38 has recesses 37a and 38a having large diameters and recesses 37a and 38a having large diameters gradually reduced from both sides of the recesses 37a and 38a, , And 38b.

In the engaging mechanisms 31 and 32, the supporting convex portions 39 and 40 abut against the second engaging convex portions 35 and 36 of the engaging piece 41 so that the engaging piece 41 is engaged with the motor shaft 4 In the direction in which they are separated from each other. 13 and 14, the engaging portion 43 of the engaging piece 41 is disengaged from the engaging portion 44 of the engaging portion 42 of the motor shaft 4 to be in the unlocked state do. On the other hand, when the operating member 6 rotates in the reverse direction (clockwise direction), the abutment between the supporting convex portions 39, 40 and the second engaging convex portions 35, 36 is released. At the same time, in the inner diameter changing portions 37 and 38 of the guide portion 22, the curved portions 37b and 38b continuing to the concave portions 37a and 38a having a larger diameter are engaged with the first engaging convex portions 33, 34). Since the curved portions 37b and 38b are smaller in diameter than the concave portions 37a and 38a having a larger diameter, the curved portions 37b and 38b come into contact with the first engaging convex portions 33 and 34, The piece 41 is pushed and moved linearly in the direction of the motor shaft 4. [ 11 and 12, the engaging portions 43 of the engaging pieces 41 engage with the constricted portions 44, which are the engaged portions 42 of the motor shaft 4, and engage with each other. With such an engagement, the one-touch detachable device is attached to the motor shaft 4. [ Therefore, in the holding state, the engaging pieces 41 are fixed by the inner diameter changing portions 37 and 38 of the guide portion 22, so that compared with the method of pushing by the elastic force of the spring or the like, Lt; / RTI > That is to say, since the retaining portion provided in the motor shaft is pressed by the resilient force of a spring or the like to press the retaining portion into the retaining state, the retaining state is maintained by the elastic force of the spring or the like, According to the invention, since the movement of the engaging piece 41 is restricted by the inner diameter changing portions 37 and 38 of the guide portion 22, the holding state can be maintained more firmly.

(Embodiment 3)

Figs. 15 to 19 show a one-touch detachable device of a fan according to a third embodiment of the present invention, and are cross-sectional views corresponding to line B-B in Fig. The one-touch detachable device of this embodiment has a structure similar to that of the one-touch detachable device 1 of the first embodiment and further has a structure in which a hold mechanism 51 is provided on the base 10. [

That is, like the first embodiment, the one-touch detachable device of this embodiment has the cover 5 fixed to the fan 2, the base 10 fixed to the bottom surface of the accommodating portion 5a of the cover 5, And an operating member 6 displaceably attached to the base 10. The base 10 has a motor shaft insertion hole 10a into which the motor shaft 4 is inserted at a substantially central portion thereof and the operating member 6 has a circular shaft portion 10b formed with a motor shaft insertion hole 10a Respectively.

The operating member 6 includes a ring-shaped guide portion 22 rotatably attached to the circular shaft portion 10b of the base 10 in the forward and reverse directions, And an operation portion 23 protruding outwardly from the front side.

5, a circular shaft portion 10b of the base 10 is provided with a pair of lock pieces 12, 13 as an engagement piece 41 and a pair of lock pieces 12, 13 connected to each of the pair of lock pieces 12, The pair of action members 15 and 16 are provided on both sides of the motor shaft insertion hole 10a. Threaded portions 12a and 13a engaging with and engaging with the threaded portion 4a of the motor shaft 4 are formed on the end surfaces of the locking holes 12 and 13, respectively. First engaging convex portions 33 and 34 are formed on the inner sides of the guide portions 22 of the respective action openings 15 and 16 and on the outer side thereof with the guide portion 22 therebetween, And engaging convex portions 35 and 36 are formed. The inner diameter changing portions 37 and 38 corresponding to the first engaging convex portions 33 and 34 are formed on the inner side of the guide portion 22 and the supporting convex portions 35 and 36 corresponding to the second engaging convex portions 35 and 36 (38, 39) are formed on the outside of the guide portion (22). The first and second engaging convex portions 35 and 36 and the inner diameter varying portions 37 and 38 and the supporting convex portions 39 and 40 form a lock The engaging mechanisms 31 and 32 are formed so that the spheres 12 and 13 engage with the threaded portion 4a of the motor shaft 4 or release the engagement. The locking holes 12 and 13 and the action openings 15 and 16 are tapered surfaces 12c and 15c which gradually increase in distance from the motor shaft 4 along the inserting direction of the motor shaft 4 As shown in Fig. An elastic body 14 having locking holes 12 and 13 therebetween is provided between the locking holes 12 and 13 and the base 10. The base 10 is provided with a return spring 8 for returning the operating member 6 displaced by rotation to the original position. The structure described above is the same as that of the first embodiment.

The hold mechanism 51 in this embodiment is formed by a hold cap 52 and a pressing spring 53 for pressing the hold cap 52. [ The hold cap 52 is inserted into the motor shaft insertion hole 10a of the base 10 so as to be vertically movable so that the hold cap 52 is installed so as to coincide with the axial direction in which the motor shaft 4 is inserted . The hold cap 52 is formed in a cylindrical shape in which the upper surface portion 52a is closed and the lower surface is opened. The holding cap 52 has a cylindrical shape with a diameter slightly larger than the diameter of the threaded portion 4a of the motor shaft 4. [ Thus, when the hold cap 52 is positioned in the motor shaft insertion hole 10a, the locking holes 12 and 13 are in a retracted state in which advancement into the motor shaft insertion hole 10a is blocked. A flange-shaped stopper portion 52b abutting on the base 10 is formed at the lower end of the hold cap 52. The stopper portion 52b abuts against the base 10, The upward movement of the hold cap 52 is stopped.

The pressure spring 53 is disposed between the upper surface portion 52a of the hold cap 52 and the cover 5 and presses the hold cap 52 to move upward. Thus, the hold cap 52 is pressed so as to be inserted into the motor shaft insertion hole 10a of the base 10.

In the one-touch detachable device of this embodiment, the operation member 6 is rotated and moved in the counterclockwise direction, and the locking holes 12, 13 are inserted into the motor shaft 12 of the base 10 via the action holes 15, And retracted from the insertion hole 10a. As a result, the hold cap 52 pressed by the pressure spring 53 enters the motor shaft insertion hole 10a from below. The lock pieces 12 and 13 are inserted into the motor shaft insertion hole 10a as shown in Fig. 15 because the threaded portions 12a and 13a of the lock holes 12 and 13 are pushed by the hold cap 52 As shown in Fig. Therefore, even if the operation on the operating member 6 is canceled, the locking holes 12 and 13 do not advance into the motor insertion hole 10a. In a state in which the operation of the operating member 6 is released, the operating member 6 is pressed by the return spring 8 so as to rotate in the reverse direction (clockwise direction).

In this state, the one-touch attaching / detaching device approaches the motor shaft 4, and the threaded portion 4a of the motor shaft 4 is inserted into the motor shaft insertion hole 10a. 16 shows this state and the front end portion of the threaded portion 4a of the motor shaft 4 enters the motor shaft insertion hole 10a while pushing the upper face portion 52a of the hold cap 52. [ Therefore, the hold cap 52 moves downward in the motor shaft insertion hole 10a while pushing the pressure spring 53. [ In this state, the retention state of the locking holes 12, 13 from the motor shaft insertion hole 10a is maintained by the hold cap 52, so that the locking holes 12, It is possible to smoothly insert the motor shaft 4 into the motor shaft insertion hole 10a without operating the manipulating member 6 because the motor shaft 4a does not interfere with or engage with the motor shaft insertion hole 10a.

17 shows a state in which the threaded portion 4a of the motor shaft 4 is completely inserted into the motor shaft insertion hole 10a of the base 10. When the hold cap 52 moves downward and the lock holes 12 and 13 As shown in Fig. At this time, since the operating member 6 is pressed and rotated in the returning direction by the return spring 8, the locking holes 12 and 13 are engaged with the motor shaft insertion holes 4a. At this time, since the resilient body 14 elastically supports the locking holes 12, 13 from the up and down direction, the mountains / valleys of the threaded portions 12a, 13a of the locking holes 12, 4) of the threaded portion 4a. The locking members 12 and 13 are momentarily moved in the direction of the motor shaft 4 so that the screw portions 12a and 13a of the locking members 12 and 13 are engaged with the motor shaft 4 And the one-touch detachable device can be mounted on the motor shaft 4. [0064] As shown in Fig. A crash sound is generated when the motor shaft 4 is engaged with the threaded portion 4a due to the advancement of the locking holes 12 and 13 so that it is possible to determine that the one- have.

To detach the one-touch detachable device from the motor shaft 4, the operation member 6 is rotated and moved counterclockwise. The locking members 12 and 13 are moved in the linear direction orthogonal to the axial direction of the motor shaft 4 and the threaded portions 12a and 13a are separated from the threaded portion 4a of the motor shaft 4, The touch detachable device can be separated. In the detachment of the one-touch detachable device, the hold cap 52 enters between the locking holes 12 and 13 by the urging force of the pressing spring 53 and returns to the state of FIG.

19 shows a case where the insertion of the motor shaft 4 is stopped when the base 10 is inserted into the motor shaft insertion hole 10a. In this case, since the hold cap 52 stops between the locking holes 12 and 13, the locking holes 12 and 13 do not advance in the direction of the motor shaft insertion hole 10a, 13a do not engage with the threaded portion 4a of the motor shaft 4. Therefore, the one-touch detachable device is not attached to the motor shaft 4 in an incomplete state, and the problem that the one-touch detachable device is dropped due to imperfect attachment can be prevented.

(Fourth Embodiment)

Fig. 20 is a plan view, Fig. 21 is a cross-sectional view taken along the line FF of Fig. 20, and Figs. 22 and 23 are views showing the operation of the fan of the fourth embodiment of the present invention 21 is a cross-sectional view taken along line GG of FIG.

The one-touch detachable device of the fan of this embodiment is a modification of the operating member 6 and the return spring 8 in the first embodiment, and the other configuration is the same as that of the one-touch detachable device of the first embodiment have. In this embodiment, a hold mechanism 51 according to the third embodiment is provided. 21, the hold mechanism 51 includes a hold cap 52 which moves upward and downward into the motor shaft insertion hole 10a of the base 10 and a holding cap 52 which holds the hold cap 52 in the motor shaft insertion hole And a pressing spring 53 for urging the pressing member 53 to enter the pressing member 10a.

The base 10 is provided with a pair of locking holes 12 and 13 as an engaging piece 41 and a pair of operating holes 15 and 16 connected to the respective locking holes 12 and 13 as in Embodiments 1 and 3 Are provided on both sides of the motor shaft insertion hole 10a. Threaded portions 12a and 13a engaging with and engaging with the threaded portion 4a of the motor shaft 4 are formed on the distal end surfaces of the locking holes 12 and 13, respectively. The locking members 12 and 13 and the actuating members 15 and 16 are tapered surfaces 12c and 15c which gradually increase in distance from the motor shaft 4 along the inserting direction of the motor shaft 4 , 13c, and 16c. An elastic body 14 for elastically supporting the locking holes 12 and 13 is provided between the locking holes 12 and 13 and the base 10 by interposing the locking holes 12 and 13 between the upper and lower positions .

As shown in Figs. 22 and 23, the operating member 6 has a guide portion 22 and an operating portion 23. The operating member 6 of this embodiment linearly moves with respect to the base 10 and the operating portion 23 protrudes from the accommodating portion 5a of the cover 5 and presses the operating portion 23 The operating portion 23 is pushed into the cover 5 and moves linearly.

The guide portion 22 is formed in an approximately semicircular arm shape in plan view, and an operation portion 23 is provided at a central portion thereof. The guide portion 22 is branched from the operation portion 23 to the left and right. The operating portion 23 is provided in a direction orthogonal to the arrangement direction in which the locking holes 12 and 13 and the operating portions 15 and 16 are connected. By pressing the operating portion 23, the guide portion 22 Moves linearly and displaces in a direction orthogonal to a straight line connecting the locking holes 12 and 13 and the action holes 15 and 16.

A guide surface 55 extending along the direction in which the guide portion 22 linearly moves is formed at each of the branched ends of the guide portion 22. A receiving surface 56 on which the guide surface 55 is slidable is linearly formed at a position corresponding to the guide surface 55 of the base 10. The operating member 6 can be moved linearly and stably in the above-described direction by the guide surface 55 and the receiving surface 56. [ The base 10 is formed with a stopper surface 58 extending in a direction orthogonal to the receiving surface 56. When the guide portion 22 abuts against the stopper surface 58 The linear movement of the guide portion 22 is restricted.

Each of the action openings 15 and 16 is in a state in which the right and left divergent portions of the guide portion 22 are interposed therebetween and is located between the action openings 15 and 16 and the guide portion 22 The engaging mechanisms 31 and 32 are formed. The engaging mechanisms 31 and 32 are provided with first engaging convex portions 33 and 34 formed on the inner sides of the guide portions 22 in the respective action holes 15 and 16, And second engaging convex portions 35, 36 formed on the outside with the guide portion 22 interposed therebetween. The engaging mechanisms 31 and 32 include inner diameter changing portions 37 and 38 formed on the inner surface of the guide portion 22 so as to correspond to the first engaging convex portions 33 and 34, And support convex portions 39, 40 formed on the outer surface of the guide portion 22 so as to correspond to the guide portions 22, Each of the support convex portions 39 and 40 has an inclined surface shape and protrudes from the outer surface of the guide portion 22. [ Each of the inner diameter changing portions 37 and 38 has recesses 37a and 38a each having a large diameter and curved portions 37b and 38b continuous to the recesses 37a and 38a whose diameters gradually become smaller, As shown in Fig.

The return spring 8 is formed of a coil spring and is disposed between the base 10 and the operating member 6. [ One end of the return spring 8 abuts against the back surface of the operating portion 23 of the operating member 6 and the other end abuts against the bottom surface of the spring hole 57 formed in the base 10. When the operating member 6 So as to protrude from the cover 5.

22 shows a state in which the threaded portions 12a and 13a of the locking holes 12 and 13 are withdrawn from the motor shaft insertion hole 10a of the base 10 so that the threaded portions 12a and 13a are engaged with the threaded portion 4a of the motor shaft 4, And the hold cap 52 is located in the motor shaft insertion hole 10a. 23 shows a state in which the threaded portions 12a and 13a of the locking holes 12 and 13 advance into the motor shaft insertion hole 10a and engage with the threaded portion 4a of the motor shaft 4, And it is attached to the shaft 4.

In the one-touch detachable device of this embodiment, the operating portion 23 is pushed into the cover 5 as shown in Fig. As a result, the entire operation member 6 moves linearly along the push-in direction, and the guide portion 22 linearly moves in the same direction. The supporting convex portions 39 and 40 of the guide portion 22 come into contact with the second engaging convex portions 35 and 36 of the action holes 15 and 16 by the linear movement of the guide portion 22, (15, 16) are linearly moved in the direction of separating from the motor shaft insertion hole (10a). At this time, the first engaging convex portions 33 and 34 of the action holes 15 and 16 face the concave portions 37a and 38a having the larger diameter of the guide portion 22, (33, 34) are not in contact with the guide portion (22). The screw portions 12a and 13a of the locking holes 12 and 13 are engaged with the motor shaft insertion holes 12a and 13b of the base 10 by the movement of the action holes 15 and 16, (10a). As a result, the hold cap 52 enters the motor insertion hole 10a and the retracted state of the locking holes 12 and 13 is maintained, similarly to the third embodiment. At this time, the return spring 8 is shortened by the pushing of the operating member 6 and the pressing force in the opposite direction is accumulated.

In such a state of Fig. 22, the motor shaft 4 can be inserted into the motor shaft insertion hole 10a. Since the hold cap 52 is pushed by the motor shaft 4 and moved downward in the motor insertion hole 10a by the insertion of the motor shaft 4, . At this time, since the return spring 8 presses the operating member 6 so as to move linearly in the return direction, the locking holes 12 and 13 are engaged with the motor shaft insertion holes 4a. That is to say, by the linear return movement of the operating member 6, the supporting convex portions 39 and 40 of the guide portion 22 of the operating member 6 are moved in the direction of the second engaging convex (35, 36). 23, the curved surface portions 37b, 38b of the inner diameter changing portions 37, 38 of the guide portion 22 are engaged with the first engaging convex portions 33, 34 of the action holes 15, 16 The actuating members 15 and 16 are linearly moved in the direction of the motor shaft 4 and the locking members 12 and 13 are moved linearly in the direction of the motor shaft 4 do. Whereby the threaded portions 12a and 13a of the locking holes 12 and 13 are engaged with the threaded portion 4a of the motor shaft 4 to engage with each other. Since the elastic body 14 elastically supports the locking holes 12 and 13 from the up and down directions, the mountain / valley of the threaded portions 12a and 13a is engaged with the mountain / valley of the threaded portion 4a of the motor shaft 4 So that they can be engaged with each other. In this engaging operation, since a collision sound is generated, the attachment to the motor shaft 4 can be judged to be sound.

Since the threaded portions 12a and 13a of the locking holes 12 and 13 are engaged with the threaded portion 4a of the motor shaft 4 as described above, (4). According to this embodiment, since the motor shaft 4 can be attached and detached by linear pushing operation to the operating member 6, operability is remarkably improved as compared with the rotational moving operation to the operating member 6 Improvement.

(Embodiment 5)

Fig. 24 is a plan view, Fig. 25 is a cross-sectional view taken along the line HH in Fig. 24, and Figs. 26 and 27 show the operation of the one-touch attachment and detachment device of the fan according to the fifth embodiment of the present invention. 25 is a sectional view taken along the line II in Fig.

In this embodiment, the operating member 6, the return spring 8, and the engaging piece 41 in the first embodiment are changed, and other configurations are the same as those of the one- . In this embodiment, a hold mechanism 51 according to the third embodiment is provided. 25, the hold mechanism 51 includes a hold cap 52 for entering and moving into the motor insertion hole 10a of the base 10 and a hold cap 52 for allowing the hold cap 52 to enter the motor insertion hole 10a And a pressing spring 53 for pressurizing.

As shown in Figs. 25 to 27, the engaging pieces 41 in this embodiment are provided on only one side of the base 10 with the motor insertion hole 10a therebetween. The engaging piece 41 is formed by one locking hole 12 provided on one side (left side) of the motor insertion hole 10a and one action hole 15 connected to the locking hole 12 . A threaded portion 12a engaging with and engaging with the threaded portion 4a of the motor shaft 4 is formed on the distal end face of the lock hole 12. 25, the locking hole 12 and the action hole 15 are formed so as to have tapered surfaces 12c and 15c which gradually increase in distance from the motor shaft 4 along the inserting direction of the motor shaft 4, . An elastic body 14 is provided between the locking hole 12 and the base 10 to hold the locking hole 12 in an up-and-down direction by holding the locking hole 12 therebetween.

26 and 27, the operating member 6 has a guide portion 22 formed in a C shape in plan view, and an operation portion 23 formed integrally with the guide portion 22. As shown in Fig. A circular fulcrum portion 61 is formed on one end side (the right end side in Figs. 26 and 27) of the guide portion 22 and a base 10 The shaft pin 62 is inserted. Thus, the guide portion 22 is rotatable about the fulcrum portion 61. The operating portion 23 is provided at an intermediate portion of the guide portion 22 and protrudes outward from the accommodating portion 5a of the cover 5. [ The guide portion 22 rotates about the shaft pin 62 by linearly pressing the operating portion 23 so as to push it.

The operation member 15 is in a state in which the other end side (the left end side in Figs. 26 and 27) of the guide member 22 is interposed therebetween, and the operation member 15 and the guide member 22, the engaging mechanism 31 is formed. The engaging mechanism 31 is provided corresponding to the locking piece 41 and is therefore provided on only one side of the base 10 with the motor insertion hole 10a therebetween. The engaging mechanism 31 includes a first engaging convex portion 33 formed on the inner side of the operating portion 15 with the guide portion 22 therebetween and a second engaging convex portion 33 formed on the outer side of the guiding portion 22 A second engaging convex portion 35 and an inner diameter changing portion 37 formed on the inner surface of the guide portion 22 so as to correspond to the first engaging convex portion 33; (39) formed on the outer surface of the base (22). The supporting convex portion 39 is formed in a planar shape. The inner diameter changing portion 37 is formed by a concave portion 37a having a large diameter and a curved portion 37b having a gradually decreasing diameter and continuous with the concave portion 37a having a large diameter.

The return spring 8 is formed of a coil spring and is disposed between the base 10 and the operating member 6. [ The return spring 8 has one end abutting against the rear portion of the operating portion 23 of the operating member 6 and the other end abutting against the bottom surface of the spring hole 57 formed in the base 10, So as to rotate in the direction in which it projects from the cover 5.

26 shows a state in which the threaded portion 12a of the locking hole 12 is retracted from the motor insertion hole 10a of the base 10 so that the threaded portion 12a is not engaged with the threaded portion 4a of the motor shaft 4 . At this time, the hold cap 52 enters the motor insertion hole 10a of the base 10. 27 shows a state in which the threaded portion 12a of the locking hole 12 has advanced into the motor shaft insertion hole 10a of the base 10 and engaged with the threaded portion 4a of the motor shaft 4. [ In this state, the one-touch detachable device is attached to the motor shaft 4.

In the one-touch detachable device of this embodiment, as shown in Fig. 26, the operating portion 23 is linearly pushed into the cover 5. Fig. The entire operation member 6 is rotated counterclockwise around the shaft pin 62 by this pushing and the guide portion 22 rotates in the same direction. The supporting convex portion 39 of the guide portion 22 is brought into contact with the second engaging convex portion 35 of the action hole 15 by the rotation movement of the guide portion 22, And moves linearly in the direction in which it separates from the base 10a. At this time, the first engaging convex portion 33 of the action hole 15 faces the concave portion 37a having the larger diameter of the guide portion 22, and the first engaging convex portion 33 faces the guide portion 22, (Not shown). The threaded portion 12a of the locking hole 12 is retracted from the motor shaft insertion hole 10a of the base 10 because the locking hole 12 also moves in the same direction by the movement of the action hole 15. [ As a result, the hold cap 52 enters the motor insertion hole 10a to maintain the retracted state of the lock mechanism 12. [ At this time, the return spring 8 is shortened by the pushing of the operating member 6 and the pressing force in the opposite direction is accumulated.

26, the motor shaft 4 can be inserted into the motor shaft insertion hole 10a. Since the hold cap 52 is pushed by the motor shaft 4 and moved downward in the motor insertion hole 10a by the insertion of the motor shaft 4, the hold cap 52 is moved from the motor shaft insertion hole 10a It exits. At this time, since the return spring 8 presses the operating member 6 so as to rotate in the reverse direction, the locking hole 12 advances into the motor shaft inserting hole 4a via the engaging mechanism 31 . That is to say, by the rotational movement of the operating member 6, the supporting convex portion 39 of the guide portion 22 of the operating member 6 is in contact with the second engaging convex portion 35 of the operating member 15 It falls out of the touch. 27, since the curved surface portion 37b of the inner diameter changing portion 37 of the guide portion 22 comes into contact with the first engaging convex portion 33 of the action hole 15, The lock 15 linearly moves in the direction of the motor shaft 4 and the lock 12 linearly moves in the direction of the motor shaft 4 in accordance with the movement. Whereby the threaded portion 12a of the locking hole 12 engages with the threaded portion 4a of the motor shaft 4 and engages. At this time, since the elastic body 14 elastically supports the locking hole 12 from the up and down direction, the mountain / valley of the threaded portion 12a coincides with the mountain / valley of the threaded portion 4a of the motor shaft 4, Can be engaged with each other.

As described above, since the threaded portion 12a of the locking hole 12 engages with the threaded portion 4a of the motor shaft 4, the one-touch detachable device can be attached to the motor shaft 4 without operating the operating member 6 Can be attached. A crash sound is generated when the motor shaft 4 is engaged with the threaded portion 4a due to the advancement of the locking hole 12 so that it is possible to judge that the one-touch detachable device is mounted on the motor shaft 4 by sound. In this embodiment, the engaging piece 41 having the locking hole 12 for engaging with the threaded portion 4a of the motor shaft 4 and the engaging mechanism 31 for moving the locking hole 12 forward and backward are provided on the base 10 The motor shaft insertion hole 10a of the motor shaft insertion hole 10a. Therefore, the number of parts can be reduced and a simple structure can be achieved, and maintenance can be facilitated. Since the rotational movement of the operating member 6 is performed by the linear pushing operation on the operating section 23, the operability is remarkably improved as compared with the rotational moving operation to the operating section 23. [

(Embodiment 6)

Fig. 28 is a plan view, Fig. 29 is a sectional view taken along the line JJ in Fig. 28, and Figs. 30 and 31 show the operation of the one-touch attachment and detachment device of the fan according to the sixth embodiment of the present invention. 29 is a sectional view taken along a line KK in Fig.

In this embodiment, the operating member 6, the return spring 8, and the engaging piece 41 in the first embodiment are changed, and other configurations are the same as those of the one- . In this embodiment, a hold mechanism 51 according to the third embodiment is provided. 29, the hold mechanism 51 includes a hold cap 52 for entering and moving into the motor insertion hole 10a of the base 10 and a hold cap 52 for allowing the hold cap 52 to enter the motor insertion hole 10a And a pressing spring 53 for pressurizing.

29 to 31, the engaging pieces 41 in this embodiment are provided on only one side of the base 10 on both sides with the motor insertion hole 10a therebetween. The engaging piece 41 is formed by one locking hole 12 provided on one side (left side) of the motor insertion hole 10a and one action hole 15 connected to the locking hole 12 . A threaded portion 12a engaging with and engaging with the threaded portion 4a of the motor shaft 4 is formed on the distal end face of the lock hole 12. 29, the locking hole 12 and the action hole 15 are formed so as to have tapered surfaces 12c, 15c gradually increasing in distance from the motor shaft 4 along the inserting direction of the motor shaft 4, . An elastic body 14 for elastically supporting the locking hole 12 is provided between the locking hole 12 and the base 10 by placing the locking hole 12 between the upper and lower sides.

30 and 31, the operating member 6 has a guide portion 22 formed in a C-shape in a plan view and an operating portion 23 integrally formed on the guide portion 22. As shown in Fig. The guide portion 22 is provided so as to interpose the motor shaft insertion hole 10a of the base 10 therebetween. One side (left side) sandwiching the motor shaft insertion hole 10a is an engaging mechanism forming portion 64 to be described later, and the other side (right side) is a guide arm portion 63. [ The operating portion 23 is provided at an intermediate portion of the guide portion 22 and protrudes outward from the accommodating portion 5a of the cover 5. [ By pushing in the operating portion 23, the entire operating member 6 moves linearly and displaces with respect to the base 10. This linear displacement is in a direction orthogonal to the straight line connecting the locking hole 12 and the action hole 15.

The guide arm portion 63 of the operating member 6 extends linearly along the moving direction of the operating member 6. [ The guide arm portion 63 is inserted into the guide groove 65 so that the guide arm portion 63 is inserted into the inside of the base 10 Respectively. When the operating member 6 is moved, the guide arm portion 63 slides in the guide groove 65, so that the operating member 6 can be stably and linearly moved by the sliding.

A guide surface 55 extending along the direction in which the guide portion 22 linearly moves is formed at the distal end of the engaging mechanism forming portion 64 of the guide portion 22. [ A receiving surface 56 on which the guide surface 55 is slidable is linearly formed at a position corresponding to the guide surface 55 of the base 10. In this embodiment, since the guide surface 55 and the receiving surface 56 are formed in addition to the above-described guide arm portion 63, the operating member 6 can be stably and linearly moved. A stopper surface 58 extending in a direction orthogonal to the receiving surface 56 is formed in the base 10 and the guide portion 22 abuts on the stopper surface 58, ) Is stopped.

The operation member 15 is in a state in which the engaging mechanism forming portion 64 (the left side in Figs. 30 and 31) of the guide member 22 is interposed therebetween, An engaging mechanism (31) is formed in the mechanism forming portion (64). The engaging mechanism 31 is provided corresponding to the locking piece 41 and is therefore provided on only one side of the base 10 with the motor insertion hole 10a therebetween. The engaging mechanism 31 includes a first engaging convex portion 33 formed on the inner side of the engaging mechanism forming portion 64 of the guide portion 22 of the operating member 15 and a second engaging convex portion 33 formed on the engaging mechanism forming portion An inner diameter changing portion 37 formed on the inner surface of the engaging mechanism forming portion 64 so as to correspond to the first engaging convex portion 33, and a second engaging convex portion 35 formed on the outer side of the engaging mechanism forming portion 64, And a supporting convex portion 39 formed on the outer surface of the engaging mechanism forming portion 64 so as to correspond to the second engaging convex portion 35. [ The supporting convex portion 39 is formed in a planar shape. The inner diameter changing portion 37 is formed by a concave portion 37a having a large diameter and a curved portion 37b having a gradually decreasing diameter and continuous with the concave portion 37a having a large diameter.

The return spring 8 is formed of a coil spring and is disposed between the base 10 and the operating member 6. [ The return spring 8 has one end abutting against the rear portion of the operating portion 23 of the operating member 6 and the other end abutting against the bottom surface of the spring hole 57 formed in the base 10, So as to protrude from the cover 5.

30 shows a state in which the threaded portion 12a of the locking hole 12 is retracted from the motor insertion hole 10a of the base 10 so that the threaded portion 12a is not engaged with the threaded portion 4a of the motor shaft 4 . At this time, the hold cap 52 enters the motor insertion hole 10a of the base 10. 31 shows a state in which the threaded portion 12a of the locking hole 12 has advanced into the motor shaft insertion hole 10a of the base 10 and engaged with the threaded portion 4a of the motor shaft 4. [ In this state, the one-touch detachable device is attached to the motor shaft 4.

In the one-touch detachable device of this embodiment, as shown in Fig. 30, the operation portion 23 is linearly pushed into the cover 5. Fig. The entire operation member 6 is linearly moved by this pushing. The supporting convex portion 39 of the guide portion 22 is brought into contact with the second engaging convex portion 35 of the action hole 15 by the linear movement of the guide portion 22, And moves linearly in the direction in which it separates from the base 10a. At this time, the first engaging convex portion 33 of the action hole 15 faces the concave portion 37a having the larger diameter of the guide portion 22, and the first engaging convex portion 33 faces the guide portion 22, (Not shown). The threaded portion 12a of the locking hole 12 is retracted from the motor shaft insertion hole 10a of the base 10 because the locking hole 12 also moves in the same direction by the movement of the action hole 15. [ As a result, the hold cap 52 enters the motor insertion hole 10a to maintain the retracted state of the lock mechanism 12. [ Therefore, the locking hole 12 is not inadvertently interfered with or engaged with the threaded portion 4a of the motor shaft 4, and it is not necessary to continue the operation on the operating member 6 to prevent these. At this time, the return spring 8 is shortened by the pushing of the operating member 6 and the pressing force in the opposite direction is accumulated.

In the state of Fig. 30, the motor shaft 4 can be inserted into the motor shaft insertion hole 10a. Since the hold cap 52 is pushed by the motor shaft 4 and moved downward in the motor insertion hole 10a by the insertion of the motor shaft 4, the hold cap 52 is moved from the motor shaft insertion hole 10a It exits. At this time, since the return spring 8 presses the operating member 6 to move in the reverse direction (return direction), the locking hole 12 is engaged with the motor shaft insertion hole 4a through the engagement mechanism 31, . That is to say, by the return movement of the operating member 6, the supporting convex portion 39 of the guide portion 22 of the operating member 6 is in contact with the second engaging convex portion 35 of the operating member 15 It falls out of the touch. 31, since the curved surface portion 37b of the inner diameter changing portion 37 of the guide portion 22 comes into contact with the first engaging convex portion 33 of the action hole 15, The lock 15 linearly moves in the direction of the motor shaft 4 and the lock 12 linearly moves in the direction of the motor shaft 4 in accordance with the movement. Whereby the threaded portion 12a of the locking hole 12 engages with the threaded portion 4a of the motor shaft 4 and engages. At this time, since the elastic body 14 elastically supports the locking hole 12 from the up and down direction, the mountain / valley of the threaded portion 12a coincides with the mountain / valley of the threaded portion 4a of the motor shaft 4, Can be engaged with each other.

As described above, since the threaded portion 12a of the locking hole 12 is engaged with the threaded portion 4a of the motor shaft 4, the one-touch detachable device can be attached to the motor shaft 4. [ A crash sound is generated when the motor shaft 4 is engaged with the threaded portion 4a due to the advancement of the locking hole 12 so that it is possible to judge that the one-touch detachable device is mounted on the motor shaft 4 by sound.

According to this embodiment, since the motor shaft 4 can be attached and detached by a linear pushing operation to the operating member 6, the operability is remarkably improved as compared with the rotational moving operation to the operating member 6 . An engaging piece 41 having a locking hole 12 for engaging with the threaded portion 4a of the motor shaft 4 and an engaging mechanism 31 for moving the locking hole 12 forward and backward are provided to the motor 10 of the base 10, Since only one of the shaft insertion holes 10a is provided, the number of parts can be reduced, and a simple structure can be achieved, thereby facilitating maintenance.

(Seventh Embodiment)

Fig. 32 and Fig. 33 show a one-touch detachable device of the fan according to the seventh embodiment of the present invention, Fig. 32 is a cross-sectional view of the motor shaft at the initial stage of insertion, and Fig.

The one-touch detachable device of this embodiment is the same as the structure of the third embodiment shown in Figs. 15 to 19, and has a structure in which the sound generating member 67 is further added to the structure of the third embodiment. Therefore, since the basic structure is the same as that in Embodiment 3, the same reference numerals as those in Embodiment 3 are attached to correspond to those in Embodiment 3, and the description of each member will be omitted.

The sound generating member 67 is provided corresponding to the hold cap 52 of the hold mechanism 51 and the recess 68 for disposing the sound generating member 67 is formed at the bottom of the base 10 have. The concave portion 68 has a larger diameter than the insertion concave portion 70 into which the hold cap 52 of the holding mechanism 51 is inserted and is provided at the bottom of the base 10 so as to be positioned around the insertion concave portion 70 Respectively. The sound generating member 67 is disposed between the concave portion 68 and the bottom portion 69 of the cover 5.

The sound generating member 67 is disposed in the recess 68 so that the flange-shaped stopper portion 52b formed at the lower end of the hold cap 52 abuts. The sound generating member 67 is made of a material that deforms itself to generate a sound when the stopper portion 52b of the hold cap 52 comes into contact with each other. In this embodiment, a disc spring is used in which the stopper portion 52b of the hold cap 52 abuts against and is vertically inverted.

32, the outer periphery of the motor shaft 4 is inserted into the motor shaft insertion hole 10a at the initial stage of insertion of the motor shaft 4 into the motor shaft insertion hole 10a, And has a convex shape that curves upward in a state of being in contact with the base 69. 33, when the motor shaft 4 is completely inserted into the motor shaft insertion hole 10a, the motor shaft 4 causes the hold cap 52 to be pushed downward, The stopper portion 52b of the lower end portion of the upper surface 52 abuts the sound generating member 67. [ As a result, the sound generating member 67 is inverted so that the outer peripheral portion of the sound generating member 67 is in contact with the recess 68 in the base 10, and is curved downward. During this reversal, a sound is produced. In this state, the hold cap 52 is retracted from between the locking holes 12 and 13 so that the threaded portions 12a and 13a are engaged with the threaded portion 4a of the motor shaft 4, 4). Therefore, sound is generated when the motor shaft 4 is attached to the motor shaft 4, so that mounting on the motor shaft 4 can be judged to be sound. When the motor shaft 4 comes out of the motor shaft insertion hole 10a in order to separate the one-touch detachable device 1 from the motor shaft 4, the holding cap 52 is pressed against the pressing spring 53 And moves upward by the pressing force. Because of this movement, the stopper portion 52b comes out of contact with the sound generating member 67, so that the sound generating member 67 is inverted from the concave shape to the convex shape. It is possible to judge by voice that the one-touch detachable device has been detached from the motor shaft 4 because sound is generated at the time of this reversal.

(Embodiment 8)

34 is a cross-sectional view of a one-touch detachable device of a fan in Embodiment 8 of the present invention. The one-touch detachable device of the fan in this embodiment is the same as the third to seventh embodiments except that the holding mechanism 51 of the third to seventh embodiments is changed. Therefore, the same reference numerals as those of the third to seventh embodiments are assigned to the members, and the description of the members is omitted.

The holding mechanism 51 in this embodiment is formed entirely by a holding spring 71 formed of a coil spring. The hold spring 71 is formed by a pitch coil portion 71a of pitch winding attached to the base 10 and a hold coil portion 71b of a tightly wound coil connected to the pressing coil portion 71a have. The hold coil 71 is inserted into the motor shaft insertion hole 10a such that the hold coil portion 71b is located between the lock holes 12 and 13 and becomes a portion having the same function as the hold cap 52 . When the motor shaft 4 is inserted into the motor shaft insertion hole 10a, the holding coil portion 71b abuts against the threaded portion 4a of the motor shaft 4 and is pressed by the motor shaft 4. [

In such a structure, when the motor shaft 4 is not inserted into the motor shaft insertion hole 10a, the holding coil portion 71b is pressed by the pressing coil portion 71a, (12, 13). Therefore, the locking holes 12 and 13 are prevented from advancing into the motor shaft insertion hole 10a. On the other hand, when the motor shaft 4 is inserted into the motor shaft insertion hole 10a, the holding coil portion 71b is pushed by the motor shaft 4, so that it retreats from between the locking holes 12 and 13. The locking members 12 and 13 advance into the motor shaft insertion hole 10a and engage with the threaded portion 4a of the motor shaft 4. [ By this engagement, mounting of the one-touch detachable device to the motor shaft 4 is performed. In this embodiment, since the holding mechanism 51 can be formed by a single coil spring, the number of parts is reduced, and a simple structure can be obtained.

(Embodiment 9)

35 is a cross-sectional view of a one-touch detachable device of a fan according to Embodiment 9 of the present invention. The one-touch detachable device of this embodiment is the same as that of the sixth embodiment except that the holding mechanism 51 in the sixth embodiment is changed. Therefore, the same reference numerals as those in the sixth embodiment denote the same components, and a description of the members will be omitted.

In this embodiment, the hold cap 52 in the hold mechanism 51 is changed. The hold cap 52 has a tubular portion 73 formed in a cylindrical shape in which the upper surface portion is closed and the lower surface is opened similarly to Embodiments 3 to 7 and an abutment arm portion 72 formed integrally with the tubular portion 73 ). The cylindrical portion 73 is pushed by the threaded portion 4a of the motor shaft 4 by inserting the motor shaft 4 into the motor shaft insertion hole 10a. The abutment arm portion 72 extends from the tubular portion 73 in the direction of the action hole 15. The action member 15 is a member that forms the engagement piece 41 together with the locking member 12. In this embodiment, the action member 15 is disposed on one side of the motor shaft insertion hole 12a.

The abutment arm portion 72 is extended so as to abut the end surface (right end surface) of the action mouth 15 in a state where it extends over the lock mouth 12 engaged with the action mouth 15. In the state where the motor shaft 4 is not inserted into the motor shaft insertion hole 10a and the hold cap 52 is located in the motor shaft insertion hole 10a, (15) is pushed away from the motor shaft insertion hole (10a). Therefore, in this state, the abutment arm portion 72 prevents the locking hole 12, which is engaged with the action hole 15, from advancing into the motor shaft insertion hole 10a. In contrast, when the motor shaft 4 is inserted into the motor shaft insertion hole 10a and the hold cap 52 is pulled out of the motor shaft insertion hole 10a, the abutment arm portion 72 abuts against the action hole 15 The lock hole 12 can advance into the motor shaft insertion hole 10a so that the threaded portion 12a of the lock hole 12 is engaged with the threaded portion 4a of the motor shaft 4 The attachment of the one-touch detachable device to the motor shaft 4 is performed. The screw portion 12a of the locking hole 12 and the threaded portion 4a of the motor shaft 4 do not interfere with the vertical movement of the locking hole 12 by the holding mechanism 51, It is possible to more smoothly engage with the engaging portion.

1: One-touch detachable device
2: Fan
3: Fan motor
4: Motor shaft
4a:
5: cover
6: Operation member
8: Return spring
10: Base
10a: Motor shaft insertion hole
10b:
12, 13: Locking hole
12a, 12b:
12c and 13c:
14: Elastomer
15, 16: working area
15c, 16c: taper surface
22: guide portion
23:
31, 32: engaging mechanism
33, 34: first engaging convex portion
35, 36: second engaging convex portion
37, 38: inner diameter changing portion
39, 40: support convex portion
41: engaging piece
42:
43:
44:
51: Hold mechanism
52: Hold cap
53: Pressure spring

Claims (8)

1. A one-touch detachment device for a fan that is attached to a motor shaft so as to freely attach and detach by inserting a motor shaft of the fan motor for rotating the fan and connects the fan to the motor shaft,
A motor shaft insertion hole into which the motor shaft is inserted, a base fixed to the inside of the cover fixed to the fan,
An operating member having a guide portion and an operating portion movably attached to the base;
An engaging piece provided on the base in a state in which the engaging portion engageable with the engaging portion of the outer circumferential surface of the motor shaft is formed and the guide portion is reciprocally movable in the direction of the motor shaft;
And a return spring for returning the operating member moved by the operation of the operating portion to its original position,
An engaging mechanism for reciprocating and moving the engaging piece in the direction of the motor shaft is provided on the portion of the engaging piece located between the guide portions and the corresponding portion of the guide portion corresponding to the portion, , And the engaging piece moves forward and backward with respect to the motor shaft by the abutment and separation of the engaging mechanism, and the engaging portion of the engaging piece engages and disengages with the engaged portion of the motor shaft. The method according to claim 1,
The engaging mechanism includes an inner diameter changing portion formed by changing the inner diameter of the guide portion along the moving direction of the guide portion, a support convex portion formed on the outer surface of the guide portion, and a guide portion provided on one side of the engaging piece, And a second engaging convex portion which is provided on the other side of the engaging piece with the guide portion interposed therebetween and can abut on the supporting convex portion. To-one-touch detachable device. 3. The method according to claim 1 or 2,
The engaging piece engages with the engaging portion of the motor shaft by advancing in the motor shaft inserting hole to prevent the engaging piece from advancing into the motor shaft inserting hole and by the insertion of the motor shaft into the motor shaft inserting hole, And a holding mechanism for releasing the blocking is provided on the base. 3. The method according to claim 1 or 2,
Wherein the guide portion of the operating member is rotatably or linearly movable with respect to the base. 3. The method according to claim 1 or 2,
Wherein the engaging piece is composed of a locking hole having an engaging portion which is in contact with the guide portion in a state where the guide portion is interposed therebetween and an engaging portion which is engageable with the engaged portion of the motor shaft, And the tapered surface of the locking hole and the operating hole is inclined in a direction to prevent the locking hole from being disengaged from the motor shaft. 6. The method of claim 5,
Characterized in that the locking claw is provided on the base through an elastic body which makes the locking claw movable along the axial direction of the motor shaft so as to engage the engagement portion of the locking claw with the engaged portion of the motor shaft Touch detachable device. 3. The method according to claim 1 or 2,
Wherein the engaging pieces are provided on at least one side of both sides of the motor shaft insertion hole. 3. The method according to claim 1 or 2,
Wherein the engagement portion of the engagement portion and the engaged portion of the motor shaft are threaded portions having threaded portions engaged with each other.

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