JP2522504B2 - Exhaust fan with filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a ventilation fan with a filter that can be wound with a filter.

(Prior art) Conventionally, in the ventilation fan with this kind of filter,
As shown in Japanese Utility Model Laid-Open No. 59-174545 and Japanese Utility Model Laid-Open No. 61-104129, a filter is provided on the front surface of the ventilation fan body from the upper side to the lower side, and the winding is arranged on the lower side. If the filter is wound by a roller and the filter becomes dirty due to the adhesion of oil dust and it becomes difficult to continue its use, the winding roller is rotated by rotating the dial or handle coaxially with the filter and it becomes dirty. It is known that the filter is wound.

(Problems to be solved by the invention) However, in the above-mentioned conventional one, since the ventilation fan is generally located at a high place, the dial and the handle for rotating the take-up roller are also located at a high place. There is a problem in that the user who operates the must operate the step using a step or the like, and the operation cannot be easily performed from the floor surface. Also, when the operation is folded, the wall surface of the house is located behind the dial and the handle, and it is difficult to operate because it touches it, and further, the operation itself,
Since it is performed by rotating the dial and the handle one by one, it has a problem that it is troublesome. And
Due to the difficulty of the operation, there are many problems that the filter cannot be reliably wound.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ventilation fan with a filter in which winding operation of the filter can be performed easily, and reliably.

[Structure of the Invention] (Means for Solving the Problems) A ventilation fan with a filter according to the present invention is provided on a ventilation fan main body with a filter extending from one side to the other side of the front surface of the ventilation fan main body, and the other side. A first rotation which is adapted to be wound by a winding roller arranged in the above, and which includes a pulling operation member hanging downward from the ventilation fan main body, and which is rotated by a pulling operation of the pulling operation member. Body and
A second rotating body that is rotated in connection with the first rotating body to rotate the winding roller, and the first rotating body and the second rotating body serve as a pulling operation amount of the pulling operation member. When the pulling operation member is released, the first rotating body is returned together with the pulling operating member, the second rotating body is stopped without being returned, and the pulling operation member is pulled again. The first rotary body is rotated from the returned position, and the second rotary body is rotated from the stopped position in accordance with the pulling operation amount of the pulling operation member.

(Operation) According to the above means, by pulling the pulling operation member that hangs downward from the ventilation fan main body, the winding roller is rotated through the first rotating body and the second rotating body to wind up the filter. You can Further, when the pulling operation of the pulling operation member is released, the pulling operation member is returned, but the filter is retained at the winding position.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 2, 1 is a ventilation fan main body, and an outer frame 2
A motor 4 mounted on the mounting leg 3 inside the outer frame 2, a blower blade 5 mounted on the rotary shaft of the motor 4, a shutter 6 pivotally provided in the rear opening of the outer frame 2, and a shutter 6. It comprises an operation mechanism 8 by a well-known drawstring 7 to be opened and closed, a decorative frame 9 detachably attached to the front opening of the outer frame 2, and the like.

Thus, concave portions are provided on the upper side and the lower side of the decorative frame 9, respectively.
As shown in FIG. 3, both 10 and 11 are provided over the entire width thereof, and a hole 12 is formed in the left end wall of the recess 10 at the upper side of the recess 10. As shown in FIG. 1, the receiving plate 13 is housed in such a manner that it is elastically urged by a spring 14. Also, a hole 15 is formed in the left end wall of the recess 11 on the lower side, and a receiving plate 16 is housed in the back of the hole 15 in a form of elastically urging by a spring 17. . A hole (not shown) similar to the hole 12 is formed in the end wall on the right side of the recess 10 in the upper side portion, and an opening larger than the hole 15 is formed in the end wall on the right side of the recess 11 in the lower side portion. A portion 18 is formed, and a unit housing portion 19 is further formed on the right side portion thereof.

Reference numeral 20 denotes a unit housed in the unit housing portion 19 and fixed by a screw 21, which constitutes almost all of the operation transmission mechanism 22, which will be described below. That is, the fourth
As shown in FIGS. 5 and 5, the unit 20 has a support plate 23.
Exists as a base body, and a support shaft 24 is erected on the upper portion of the support plate 23. A drive gear 25 and a rotary plate 26, which is a first rotary body having a diameter slightly smaller than that of the drive gear 25, are coaxially fitted to the support shaft 24, and a groove 27 formed on the outer peripheral portion of the rotary plate 26 among them. A pulling string 28, which is a pulling operation member, is passed through in a clockwise direction in FIG. 5, and a tip end thereof is inserted into a stop portion 29 formed at one place of the groove 27 to be fixed by a knot 30. Reference numeral 31 denotes a one-way clutch, which has a plurality of holes 32 formed in an annular arrangement in the drive gear 25 as shown in FIG. 6 and the same arrangement as the holes 32 on the surface of the rotary plate 26 facing the drive gear 25. The same number of claws 33, and a spring 34 that fits the claw 33 into the hole 32 by applying a displacement force to the drive gear 25 side to the rotary plate 26, and each claw 33 has a clockwise rotation in the figure. Form the upright surface 33a in the direction side portion,
A slanted surface 33b is formed at a portion opposite to that, so that the rotational force is transmitted from the rotary plate 26 to the drive gear 25 only in the counterclockwise direction in FIG. 5, as will be described later. It is supposed to do. Here, the spring 34 is a rotating plate.
It also serves as a spring that applies a rotational force to the return direction 26, and one end 34a thereof is hooked on a protrusion 35 provided on the rotary plate 26. On the other hand, 36 is a driven gear that is the second rotating body, 37 is a ratchet wheel, and 38 is an engaging body, and these are integrally formed, and further, in the center of one end face portion on the driven gear 36 side. Is integrally formed with a shaft protrusion 39, and a shaft cylinder portion 40 is integrally formed around the engaging body 38, and the shaft protrusion 39 is fitted into the lower portion of the support plate 23 to drive the driven gear. 36 is engaged with the drive gear 25. Reference numeral 41 denotes a stopper, which is composed of, for example, a leaf spring, the base end portion of which is fixed to the support plate 23, and the tip end portion of which is one upright surface 42a of the pawl 42 which is present around the ratchet wheel 37.
Is engaged with. The claws 42 are formed on the opposite side of the upright surface 42a from the inclined surface 4 like the claws 33 of the one-way clutch 31.
2b. Reference numeral 43 denotes a unit cover plate, which is fixed to a plurality of receiving piece portions 44 of the support plate 23 by screws (not shown), and is folded, and the rotary plate 26 is wound about one turn around the drawstring 28. This unit cover plate when rotated
The small hole (not shown) formed in the upper part of 43
The other end 34b of 34 is locked. Also, the unit cover plate 43
Is inserted through the tip of the support shaft 24 and stopped by a stop ring 45, and a hole formed in the lower part of the unit cover plate 43.
The shaft tubular portion 40 is fitted into the shaft 46, so that the engaging body 38 is exposed to the opening 18 of the decorative frame 9 outside the unit 20. The engaging body 38 has a large number of engaging claws 47, which are similar to the claws 33 of the one-way clutch 31 (opposite direction), in an annular arrangement on the surface facing the opening 18. Further, in such a mounted state of the unit 20, the drawstring 28 is hung down below the decorative frame 9 and hence below the ventilation fan main body 1 through an appropriate guide portion, and the knob 48 is attached to the lower end portion thereof. There is.

Reference numeral 49 is a filter receiver, which has a lattice shape as shown in FIG. 3, and is provided with a guide roller 50 rotatably on the lower side thereof and is detachably attached to the front portion of the decorative frame 9 together with it. are doing. Reference numeral 51 denotes a filter, which is made of a non-woven fabric, has a band shape, and is wound around a roller 52 made of, for example, cardboard. On the other hand, 53 is a take-up roller also made of cardboard, to which the winding end portion of the filter 51 is attached. Further, the take-up roller 53 has a right end portion which is another part of the operation transmission mechanism 22 and which is the engaging member.
As shown in FIG. 4, an engaged body 54 having a shape corresponding to 38 is fitted with a cylindrical body 57 formed with a surrounding portion 55 surrounding the surrounding portion and a flange portion 56 protruding further outward than the surrounding portion 55. ing. With respect to the filter 51 and the take-up roller 53, the left end of the roller 52 is inserted into the hole 12 while pushing the receiving plate 13 against the elastic force of the spring 14, and the right end is opened. The filter 51 is rotatably supported and disposed in the recess 10 by inserting it into a hole (not shown) opposed to the coil 12. On the other hand, while pulling out the filter 51, the left end of the winding roller 53 is attached to the spring 17 Against the elastic force of the receiving plate 16
Insert it into the hole 15 while pushing the
By engaging the engaged body 54 with the engaging body 38 while fitting the shaft tubular portion 40 of the 20, the winding roller 53 is rotatably supported and disposed in the recess 11, and the unit It is linked to 20. Accordingly, the filter 51 passes the front surface of the filter receiver 49 from the upper side portion, which is one side of the front surface portion (front surface portion of the ventilation fan body 1) of the decorative frame 9, to the lower side portion, which is the other side, of the decorative frame. It is provided so as to cover the front surface of 9 (the front surface of the ventilation fan main body 1).

Reference numeral 58 denotes a filter retainer, which is detachably attached to the decorative frame 9 from the front of the filter 51. Also 59
Is an oil pan which is located below the decorative frame 9, the filter receiver 49 and the filter retainer 58 and is detachably attached to the decorative frame 9, and 60 in FIG. It is a spacer that also serves as a filter guide provided only at one end portion).

Now, in the case of the configuration as described above, when the pulling string 7 is pulled with respect to the operating mechanism 8, the shutter 6 is opened and the motor 4 is energized, so that the blower blades 5 are rotationally driven. Air filter
It is sucked into the ventilation fan main body 1 through 51, and is discharged to the outside through the shutter 6 portion in the open state. Then, based on this, oil, dust, etc. contained in the intake air adheres to the filter 51 and is removed.
51 gradually becomes dirty and eventually needs to be replaced.

When the filter 51 needs to be replaced in this way, in the case of this embodiment, the pull string 28, which is the pull operation member, is pulled downward. Then, the rotary plate 26 is pulled by the stopper 29 and rotates in accordance with the pulling operation amount of the pull string 28, and the claw 33 of the one-way clutch 31 is rotated in the rotation direction (the counterclockwise direction in FIG. 5).
Respectively engage the upright surfaces 33a with the holes 32 to apply rotational force to the drive gear 2
As a result, the drive gear 25 rotates in the same direction.
Therefore, the driven gear 36 that meshes with the drive gear 25 also moves in the ratchet wheel 37.
And the engaging body 38, the slanted surfaces 42b of the claws 42 of the ratchet wheel 37 rotate while kicking the stopper 41, and the rotation is transmitted from the engaging body 38 to the engaged body 54. The take-up roller 53 is rotated via the so that the filter 51 is taken up.
Further, when wound in this way, the filter 51 is rotated together with the roller 52, and a new portion is drawn out.

Then, the pulling operation of the pulling string 28 as described above is performed by the stop portion of the rotating plate 26.
When the pulling of the drawstring 28 is released after 29 pulls to the full, the spring 34, which is in a state where it has been wound up by the rotation of the rotating plate 26 and has accumulated elastic force, Is discharged to rotate the rotary plate 26 in the returning direction (clockwise direction in FIG. 5). At this time, although the claw wheel 37 is positioned closest to the tip of the stopper 41 in the claw 42, the upright surface 42a is locked to the tip of the stopper 41 to stop the rotation in the returning direction, Along with that, the engagement body 37 and the driven gear 36 are also stopped from rotating in the returning direction, and accordingly, the winding roller 53 and the drive gear 25 are also stopped from rotating in the returning direction. Further, at this time, the claws 33 of the one-way clutch 31 are formed on the inclined surfaces 33b from the holes 32 to the rotary plate 26 of the drive gear 25.
Since the rotary plate 26 slides on the side surface, the rotary plate 26 presses the spring 34 by the height of the claw 33 and escapes to the side opposite to the drive gear 25 side to leave the drive gear 25 and rotate only itself. . Therefore, the take-up roller 53 is held stationary and the drawstring 28 is pulled up, whereupon the drawstring 28 is again pulled downward. Then, the winding roller 53 is rotated and the filter 51 is wound in the same manner as described above. Then, if the pulling of the drawstring 28 is released again, the takeup roller 53 is held stationary and the drawstring 28 is pulled up. Be done. Therefore, by repeating this, all the dirty parts of the filter 51 are wound up, and instead, the front part of the decorative frame 9 (the front part of the ventilation fan main body 1) is covered by the new part.

When the new portion of the replaced filter 51 becomes dirty and needs to be replaced, the pulling operation of the drawstring 28 is performed a plurality of times in the same manner as described above, and the new portion of the filter 51 causes the front surface of the decorative frame 9 to be replaced. The part (the front surface of the ventilation fan main body 1) is covered.

If the filter 51 cannot be used any more for winding, the oil receiver 59 and the filter retainer 58 are respectively attached to the decorative frame 9
And the left end of the roller 52 is pushed into the hole 12 while pushing the receiving plate 13 against the elastic force of the spring 14, and the right end of the roller 52 faces the hole 12 in this state. The filter 51 is taken out from the recess 10 by pulling out from the hole (not shown) and the left end from the hole 12, while the left end of the take-up roller 53 resists the elastic force of the spring 17. The receiving plate 16 is pushed into the hole 15 while being pushed into the hole 15, the engaged body 54 is disengaged from the engaging body 38 in this state, and the left end of the take-up roller 53 is taken out from the hole 15 to wind up. The roller 53 is taken out from the recess 11. And throw them away,
Instead, a new filter 51 and take-up roller 53 are attached as described above, and a filter retainer 58 and an oil receiver 59 are attached and used.

As described above, according to the present embodiment, the pulling string 28, which is the pulling operation member that hangs downward from the ventilation fan main body 1, is pulled to operate the rotating plate 26 and the second rotating body that are the first rotating body. The filter 51 can be wound by rotating the take-up roller 53 via the driven gear 36, and the fact that it is located at a high place makes it possible to take up the winder easily without using a step or the like even for an ordinary ventilation fan. You can Also, even if the wall surface of the house is located behind the drawstring 28, the drawstring 28 can be operated without touching the wall surface unlike the conventional dial or handle. Unlike the conventional dial and handle that are rotated one by one, the pull string 28 is simply pulled, so that it can be operated without trouble. Further, because of the simple operation, the winding of the filter 51 can be reliably performed, and the occurrence of problems such as extra winding and insufficient winding amount can be avoided. Further, when the drawstring 28 is returned from the pulling operation position (when the rotary plate 26 is returned from the position rotated by the drawstring 28), the driven gear 36 is stopped without being returned, the winding roller 53 is not returned, and the filter is not returned. The filter 51 stays in the rolled-up position, so the filter 51
It is possible to use the filter 51 for a new use without the problem of returning from the winding position with the return of the filter.

According to the above-described embodiment in which the operation transmission mechanism 22 is configured to wind the filter 51 for one surface of the front surface of the ventilation fan main body 1 by pulling the pulling string 28 a plurality of times, the pulling operation can be performed by one pulling operation. The gear mechanism can be made compact and the operating force can be reduced as compared with the one that performs.

However, the present invention is not limited to the embodiment described above and shown in the drawings, and therefore, the filter 51 winds one surface portion of the front surface of the ventilation fan main body 1 by one pulling operation of the drawstring 28. However, the specific structure is not limited to that described above. Further, the winding direction of the filter 51 may be the direction from bottom to top contrary to the above, or may be the direction from right to left or left to right. In addition, the wound filter 51 does not have to be in the form of a roll wound around the rotor 52, but may be in the form of a fold, and it does not exist more than once, but only once. It may be possible to remove it for replacement by winding it up without soiling the hands. Besides, for example, the pulling operation member may be a wire or a plate other than the pulling string 28.

[Effects of the Invention] As is apparent from the above description, in the ventilation fan with a filter of the present invention, the filter is provided on the ventilation fan main body from one side of the front surface of the ventilation fan main body to the other side, and on the other side. A first rotation which is adapted to be wound by a winding roller provided and which has a pulling operation member hanging downward from the ventilation fan main body and which is rotated by a pulling operation of the pulling operation member. A first rotating body and a second rotating body that is rotated in connection with the first rotating body to rotate the winding roller. The first rotating body and the second rotating body are pulled by the pulling operation member. The first rotating body is returned together with the pulling operation member when the pulling operation of the pulling operation member is released according to the operation amount, and the second rotating body is stopped without returning, so that the pulling operation member is not rotated again. First rotation by pulling operation The body is characterized in that it is rotated from the returned position and the second rotating body is rotated from the stopped position in accordance with the pulling operation amount of the pulling operation member, whereby the winding operation of the filter is performed. And that the filter can be retained in the winding position even if the pulling operation member returns from the pulling operation position, and the filter can be used again without problems. It has an excellent effect.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view of the entire cutaway view, FIG. 2 is a side view of the same in section, FIG. 3 is an exploded perspective view thereof, and FIG. 4 is an operation transmission mechanism. Fig. 5 is an enlarged vertical front view of Fig. 5, Fig. 5 is an enlarged side view in which a unit cover plate of the same mechanism is removed and a part is further broken, Fig. 6 is an enlarged exploded perspective view of a portion related to a one-way clutch, and Fig. 7 is a decorative frame. FIG. 7 is an enlarged cross-sectional view of a part of a portion which is pressed against a filter. In the figure, 1 is a ventilation fan main body, 22 is an operation transmission mechanism, 25 is a drive gear, 26 is a rotary plate (first rotary body), 28 is a drawstring (pull operation member), 31 is a one-way clutch, 34 is a spring, 36 is a second rotating body of the driven gear, 38 is an engaging body, 51 is a filter, 53 is a take-up roller, and 54 is an engaged body.

Claims (3)

(57) [Claims] 1. A ventilation fan main body having a filter extending from one side of the front face of the ventilation fan main body to the other side, and being able to be wound by a winding roller arranged on the other side. A first rotating body that is provided with a pulling operation member that hangs downward from the ventilation fan main body and that is rotated by a pulling operation of the pulling operation member; and the winder that is rotated in association with the first rotating body. A second rotating body for rotating the roller, wherein the first rotating body and the second rotating body are rotated according to the pulling operation amount of the pulling operation member, and the pulling operation of the pulling operation member is released. The first rotating body is returned together with the pulling operation member, the second rotating body is stopped without being returned, and the second rotating body is stopped by the pulling operation of the pulling operation member again. The rotating body of the Ventilator with a filter, characterized in that it is rotated in accordance with the pulling operation amount of the operation member. 2. A first rotating body is provided with a rotational force in a returning direction by a spring, and a drive gear is connected to the first rotating body via a one-way clutch that transmits the rotational force only in a pulling operation direction of a pulling operation member, The second rotating body is configured to transmit the rotating force from the drive gear thereof and transmit the rotating force to the take-up roller through the engaging body and the engaged body engaged with the engaging body. A ventilation fan with a filter according to item 1. 3. The second rotating body is configured to transmit a rotational force so as to wind the filter by one surface of the front surface of the ventilation fan body in response to a plurality of pulling operations of the pulling operation member. A ventilation fan with a filter according to claim 1.