JP2522476Y2 - Ventilation fan with filter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan with a filter in which a filter body is detachably mounted on the front of a decorative frame.

[0002]

2. Description of the Related Art Normal ventilation fans used in kitchens and the like are:
It consists of a main body and a decorative frame detachably mounted on the front side of the indoor side of the main body, a fan motor with a fan mounted inside the main body, and a bell surrounding the fan in the decorative frame. A mouse is provided.

The ventilation fan with a filter is configured such that a filter body is detachably attached to a front portion of a decorative frame of the above-described ordinary ventilation fan. FIG. 9 shows an example of a mounting structure of a filter body in this ventilation fan with a filter.
Shown in This mounting configuration is not known.

In FIG. 9, an inverted L-shaped hooking piece 2 is formed as a receiving part at an upper part of a front part of a decorative frame 1, and an insertion hole 3 is formed at a lower part. And the insertion hole 3
A projecting piece 4 is projected rearward from an upper opening edge of the above, and an engaging projection 5 is projected downwardly from the projecting piece 4. On the other hand, a hooking hole 8 as a hooking portion is formed in an upper portion of the outer frame 7 of the filter body 6, and an elastic piece 9 projects rearward at a lower portion. The elastic piece 9 is provided with the engaging hole 1.
0 is formed.

[0005] To mount the filter body 6, first, the upper hooking hole 8 is hooked and held on the hooking piece 2 from above, and then the lower elastic piece 9 is inserted into the insertion hole 3. Then
The engagement hole 10 of the elastic piece 9 elastically engages with the engagement protrusion 5 as shown by a solid line in FIG.
It can be attached to the front of the camera.

[0006] As described above, the filter body 6 attached to the decorative frame 1 captures oil dust and the like from the air discharged outside by the ventilation operation. If the filter body 6 becomes dirty as a result of catching oil and dust, the filter body 6 is removed from the decorative frame 1 and replaced with a new filter body.

[0007]

As described above, since the filter body 6 is a so-called disposable type, the outer frame 7 is not made so strong. For this reason, while the filter body 6 is stored for replacement, the outer frame 7 is deformed, and in particular, the elastic piece 9 protruding from the outer frame 7 is moved outward (lower) as shown by a two-dot chain line in FIG. Side).

When the filter body 6 in which the elastic piece 9 is deformed outward is attached to the decorative frame 1, the engaging hole 10 of the elastic piece 9 is engaged with the engaging projection as shown by a two-dot chain line in FIG. 5 may not be engaged, or even a small amount of hooking may be obtained even if engaged, and the lower part of the filter body 6 may be incompletely attached.

The present invention has been made in view of the above circumstances, and an object of the present invention is to increase the degree of engagement with an engagement projection even if an elastic piece of a filter body is deformed, and An object of the present invention is to provide a ventilation fan with a filter that is not likely to come off accidentally.

[0010]

The ventilating fan with filter according to the present invention has a decorative frame provided on the front side of the indoor side of the main body, and a detachable filter body having a sheet-like filter integrally provided inside the outer frame. In the attachment, a receiving portion is formed at an upper portion of a front portion of the decorative frame, an insertion hole is formed at a lower portion, and an engagement protrusion is provided at an upper rear portion of the insertion hole to protrude downward, A hook portion is formed on the upper portion of the outer frame of the filter body and held by hooking the receiving portion from above, and an elastic piece to be inserted into the insertion hole is provided at a lower portion to project rearward. An engaging hole for engaging the engaging projection is formed on the piece, and a rib of a required height extending in the front-rear direction is provided on the elastic piece to project downward.

[0011]

When the elastic piece of the filter body is deformed outward, when the elastic piece is inserted into the insertion hole of the decorative frame, the rib projecting downward from the elastic piece slides on the lower surface of the opening of the insertion hole. For this reason, since the elastic piece is pushed upward by the height of the rib, the degree of engagement of the engagement hole with the engagement projection increases.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

First, in FIGS. 2 and 3 showing the entire configuration of a ventilation fan with a filter, a main body 11 is formed in a square tube shape from a metal plate material. A fan motor 12 is mounted inside the main body 11 via a mounting frame 13, and a fan 14 is detachably attached to a rotation shaft (not shown) of the fan motor 12. Further, a shutter 15 which is opened by receiving wind pressure is pivotally mounted on the outdoor side of the main body 11.

A plastic decorative frame 16 is detachably attached to the front side of the main body 11 on the indoor side by a well-known elastic engaging means, and a bell mouth 17 surrounding the fan 14 is mounted on the decorative frame 16. It is formed integrally. The filter body 18 is detachably attached to the front surface of the decorative frame 16. At the center of the lower part of the front surface of the decorative frame 16, a concave portion 16a is formed for putting a finger on the filter body 18 when removing the filter body 18.

The filter body 18 has a rectangular outer frame 19,
Sheet filter 20 provided inside the outer frame 19
It is composed of The outer frame 19 is, for example, A
It is made of a BS resin, and the sheet filter 20 is made of a non-woven fabric made of, for example, polypropylene fiber. The outer frame 19 and the sheet filter 20 are integrated, and in the case of the present embodiment, the integration is performed in the outer frame 1.
The sheet filter 20 is placed in a molding die (not shown) for molding the resin 9, and in this state, a resin is injected and injected into the molding die to form the outer frame 19. This is performed by so-called insert molding, in which the peripheral portion of the sheet-like filter 20 is embedded and both are integrated. An oil reservoir 19a is formed at a lower end portion of the outer frame 19 to store the oil adhering to the sheet-like filter 20 when the oil is transmitted down to the outer frame 19.

A plastic support bar 21 is provided diagonally on the back side of the filter body 18 as described above so as to be positioned diagonally. The support bar 21 is formed separately from the filter body 18, and both ends thereof are provided with the outer frame 1.
9 is detachably attached. And support beam 2
As shown in FIG. 2, between both ends of the support 1 is bent in an arc shape so as to protrude toward the front of the indoor side. The sheet filter 20 is pressed so as to protrude more toward the indoor side than the outer frame 19.

Here, the filter body 1 for the decorative frame 16 is
8 will be described. That is, as shown in FIG. 1, a substantially inverted L-shaped hooking piece 22 serving as a receiving portion is provided on the upper portion of the front surface of the decorative frame 16 and located on both left and right sides thereof. Also, at the lower part of the front part of the decorative frame 16,
Insertion holes 23 are formed at both left and right sides.
A projecting piece 24 projects rearwardly from the upper edge of the insertion hole 23, and a tapered engaging projection 25 projects downwardly from the projecting piece 24. Therefore, this engagement projection 2
5 is located at the upper rear side of the insertion hole 23.

On the other hand, in the upper part of the outer frame 19 of the filter body 18, there are formed hanging holes 26 as hanging parts located on both left and right sides of the upper surface of the peripheral wall 19b. The outer frame 19
The elastic pieces 27 located on the left and right sides of the front
Is protruding. The elastic piece 27 protrudes relatively longer than the rear end of the outer frame 19, and an engagement hole 28 is formed in a portion protruding from the outer frame 19. As shown in FIG. 4, a rib 29 having a required height extending in the front-rear direction projects downward from a side edge of the elastic piece 27 (only one is shown). Are formed as inclined surfaces 29a.

In the above configuration, in order to attach the filter body 18 to the decorative frame 16, first, as shown by a two-dot chain line in FIG. 22 is hooked from above. Next, the lower part of the outer frame 19 is pressed to push the elastic piece 27 into the insertion hole 23 at the lower part of the decorative frame 16. Then, the elastic piece 27 gets over the front slope portion of the engaging projection 25 of the projecting piece 24 while being elastically deformed, and finally the engaging hole 28 engages with the engaging projection 25 as shown by a solid line in FIG. I do. With this,
The elastic piece 27 is kept in a retaining state, and the filter body 18 is detachably attached to the decorative frame 16.

To remove the filter body 18, as shown in FIG. 5, thumbs are applied to the lower front surface of the outer frame 19 of the filter body 18, and the remaining four fingers are inserted into the concave portions 16 of the decorative frame 16.
a, apply it to the back side of the lower end of the outer frame 19, and pull the other four fingers toward you while pressing the outer frame 19 with your thumb. Then, the lower portion of the outer frame 19 is slightly twisted, so that the elastic piece 27 is tilted downward, and the engagement hole 2 is formed.
8 comes out of the engagement projection 25. Therefore, if the lower portion of the outer frame 19 is further pulled forward, the elastic piece 27 gets over the engagement protrusion 25 while being elastically deformed.
Since the engagement hole 28 is completely disengaged from the engagement projection 25, the elastic piece 27 is pulled out of the insertion hole 23. Thereafter, when the filter body 18 is pushed up, the hanging hole 26 comes off the hooking piece 22, so that the filter body 18 can be removed from the decorative frame 16.

When the upper hanging hole 26 is hooked on the hooking piece 22 when the filter body 18 is mounted as described above, considering that the ventilation fan is generally installed at a high place, the hanging hole 26 is hooked. It is actually difficult to confirm that the piece 22 has been securely fitted. For this reason, the hanging hole 26 is not fitted to the hooking piece 22, and for example, the surrounding wall 1
The engagement hole 28 of the elastic piece 27 is inserted into the engagement projection 25 of the projection piece 24 in a state where the upper surface of 9b is merely placed on the upper end of the hook piece 22.
, The upper part of the outer frame 19 may come off the hooking piece 22 due to, for example, vibration during ventilation operation.

However, since the lower elastic piece 27 is inserted from the insertion hole 23 and the engaging hole 28 is engaged with the engaging projection 25 of the projecting piece 24, the upper part of the outer frame 19 is
As shown in FIG. 6, the rib 29 of the elastic piece 27 can be received on the lower surface of the opening of the insertion hole 23 as shown in FIG. Then, the filter body 18 is rotated so as to be in the forwardly inclined state, and the elastic piece 27 is in the upward state, and the engagement hole 2 is formed.
8 is engaged with the engagement projection 25 more deeply, and the rear end of the lower surface of the peripheral wall 19 b of the outer frame 19 is
To come into contact with the front of the Therefore, the filter body 1
As shown in FIG. 7, 6 is safe because there is no risk of falling off from the decorative frame 16 because it is supported in the forwardly inclined state.

By the way, it is assumed that the elastic piece 9 projecting from the outer frame 7 is deformed so as to be inclined outward (downward) while the filter body 18 is stored for replacement. When such a filter body 18 is mounted, the upper hook hole 2
6 is hooked on the hooking piece 22, and the elastic piece 27 is inserted into the insertion hole 23.
First, the inclined surface 29a of the rib 29 is inserted into the insertion hole 2
The lower surface of the rib 29 rides on the lower surface of the opening of the insertion hole 23 by the sliding action of the inclined surface 29a. For this reason, the elastic piece 27 is
Is pushed upward in an upward direction by an amount corresponding to the protruding height of the engaging hole 25. As a result, the engaging hole 28 is engaged with the engaging protrusion 25 more deeply. Therefore, the engagement of the elastic piece 27 with the engagement protrusion 25 becomes more reliable, and the accidental disengagement can be more reliably prevented.

The present invention is not limited to the embodiment described above and shown in the drawings. For example, there is no need to provide a support bar for pressing the sheet-like filter 20 of the filter body so as to protrude forward. Various changes can be made without departing from the gist, such as a receiving hole of the decorative frame 16 serving as a hook hole and a hooking portion of the outer frame 19 of the filter body 18 serving as a hook piece.

[0025]

As described above, according to the ventilation fan with filter of the present invention, the elastic piece of the filter body is provided with the rib of the required height extending in the front-rear direction and protruding downward from the elastic piece of the filter body. When the elastic piece is inserted into the insertion hole of the decorative frame when the elastic piece is deformed outward, the rib is slidably in contact with the lower surface of the opening of the insertion hole and acts to push the elastic piece upward, so that the engagement with the engagement protrusion is performed. It is possible to obtain an excellent effect that the degree of engagement of the holes can be increased and there is no possibility that the engagement of the elastic pieces is inadvertently disengaged.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a main part showing an embodiment of the present invention.

FIG. 2 is a longitudinal side view showing the entire configuration.

FIG. 3 is an exploded perspective view.

FIG. 4 is an enlarged perspective view of one elastic piece.

FIG. 5 is a longitudinal sectional side view for explaining an operation for removing a filter body.

FIG. 6 is an enlarged longitudinal side view of an elastic piece portion when the upper part of the filter body is detached from the decorative frame.

FIG. 7 is a longitudinal sectional side view of a main part when the upper part of the filter body is detached from the decorative frame.

FIG. 8 is an enlarged longitudinal sectional side view of an elastic piece portion for explaining an operation when the elastic piece is deformed outward;

FIG. 9 is a view corresponding to FIG. 1 for explaining a drawback of a recently proposed filter body mounting structure.

[Explanation of symbols]

11 is a main body, 14 is a fan, 16 is a decorative frame, 18 is a filter body, 19 is an outer frame, 20 is a sheet filter, 22 is a hook (receiving portion), 23 is an insertion hole, 25 is an engagement projection,
6 is a hanging hole (hanging portion), 27 is an elastic piece, 28 is an engaging hole,
29 is a rib.

Claims (1)

(57) [Scope of request for utility model registration] 1. A filter body having a sheet-shaped filter integrally provided inside an outer frame is detachably attached to a decorative frame provided on a front side of an interior side of a main body of the main body. A receiving portion is formed in the lower portion, an insertion hole is formed in a lower portion, and an engagement protrusion is provided at an upper portion on the rear side of the insertion hole to protrude downward, while the receiving portion is formed in an upper portion of an outer frame of the filter body. And an elastic piece inserted into the insertion hole is formed at a lower portion thereof so as to protrude rearward, and the elastic piece is engaged with the engaging projection. A ventilation fan with a filter, characterized in that a hole is formed and a rib of a required height extending in the front-rear direction is provided to project downward from the elastic piece.