JPH0611163A - Ventilation fan - Google Patents

Abstract

PURPOSE:To effect an easy and positive operation of an air filter even in the case that a ventilation fan is fixed at a high location. CONSTITUTION:A ventilation fan is constructed such that a front surface of a main body 2 having a suction port 1 for sucking air to be discharged is covered by a replaceable air filter 3 comprising a holding frame 6 and a filter member 7 coincided with the front surface of the main body 2. The holding frame 6 is removably connected by the main body 2 and connecting arms 8 arranged at both sides in such a manner that the holding frame can be pivotally rotated from a state coincided with the front surface of the main body 2 to a lower side within a vertical plane and concurrently there is provided a holding means comprising a projection 11 and a concave part 12 for use in holding a coincided state of the holding frame 6 with the front surface of the main body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan whose front surface is covered with an air filter.

[0002]

2. Description of the Related Art Since the front surface of an exhaust fan and the exhaust passage are easily contaminated and are difficult to clean, for example, as shown in Japanese Utility Model Laid-Open No. 61-89730, the front surface of the main body where the suction port is opened is Some are covered by a filter. The air filter has a structure in which a filter material is held by a holding frame that is detachably attached to the main body, and can be easily attached to and detached from the main body by a hooking structure or engaging / disengaging a claw.

In the conventional ventilation fan having the above-mentioned structure, the air filter itself is constructed to have a good appearance, and it is preferable in appearance to replace the air filter itself with a new one or to remove it from the main body and clean it independently. The ventilation fan can be maintained in the condition, and the main body side is less likely to get dirty, so it is free from troublesome cleaning of the main body side.

[0004]

In the conventional ventilation fan as described above, it is important that the air filter can be easily engaged and disengaged. Therefore, a simple engaging and disengaging means having a structure such as a latching structure or a claw is adopted. However, if the ventilation fan is installed at a relatively high place, it may be difficult to engage and disengage the air filter, causing damage to the latching pieces and claws, and installing the air filter in a loose condition. It includes problems that need to be solved.

The present invention has been made in order to solve such a conventional problem. Even if the air filter is mounted at a high place, the operation of the body of the air filter can be easily performed, and the mounted state of the air filter is always stable. The purpose of the present invention is to provide an easy-to-use ventilation fan that can be used.

[0006]

In the ventilation fan according to the present invention, an air filter is detachably connected to a main body by connecting arms on both sides so as to be rotatable in a vertical plane, and is aligned with a front surface of the main body by a holding means. It is designed to hold the state.

In another ventilation fan according to the present invention, particularly, the upper ends of the connecting arms on both sides are connected by a connecting rod, and an air filter is rotatably suspended at the upper edge of the connecting rod.

[0008]

In the ventilation fan according to the present invention, when the air filter aligned with the front surface of the main body is pulled to the front, the holding means is released and the connecting arm rotates the entire air filter downward in the vertical plane. It can be separated from the front of the main body and positioned below the main body.At this position, you can replace the air filter and clean the filter material, and push the air filter up to return it to the original position It will be.

Further, in the other ventilation fan according to the present invention, in particular, the air filter itself is more exchangeable, and since the connecting arm is connected by the connecting rod, the swinging is less likely to occur and the operation of the air filter is stabilized. .

[0010]

【Example】

Example 1. FIG. 1 is a perspective view of a ventilation fan showing an embodiment of the present invention, FIG. 2 is a side view of the same ventilation fan, and FIGS. 3 and 4 are enlarged views of essential parts of the ventilation fan.

The ventilating fan of this embodiment is provided with an air filter 3 which can be replaced in a matched state on the front surface of a main body 2 having a suction port 1 for sucking air to be exhausted which is opened at the center of the front surface. An impeller 4 that forms an exhaust flow at the suction port 1 of the main body 2
Facing each other, concave recesses 5 are formed in the vertical direction on the left and right side edges of the front surface of the main body 2 having the suction port 1. The air filter 3 includes a resin holding frame 6 and a filter material 7 held by the holding frame 6. The holding frame 6 is formed in a size and shape corresponding to the front surface of the main body 2, and one end side is rotatably attached to the other end of the left and right connecting arms 8 which are pivotally attached to the lower side surfaces of the escape portions 5 on both sides of the main body 2. It is movably pivoted. A connecting side of each connecting arm 8 with the holding frame 6 is bent forward in an L shape, and a C-shaped joint structure 9 is formed at a free end thereof. On both sides near the upper end of the holding frame 6, there are laterally projecting pivotal support projections 10 which can be detachably fitted to the joint structures 9 of the respective connecting arms 8. The filter 3 is rotatable in a vertical plane downward from a state of being aligned with the front surface of the main body 2 (see FIG. 3). When the air filter 3 is aligned with the front surface of the main body 2, each connecting arm 8 is set in the escape portion 5 on the front surface of the main body 2.

A hemispherical protrusion 11 is formed inward on the inside of the upper portion of each connecting arm 8, and a recess 12 for engaging the protrusion 11 is formed on the upper side surface of each escape portion 5 of the body 2 corresponding thereto. Has been done. When the air filter 3 is aligned with the front surface of the main body 2 and covers the front surface of the main body 2, the protrusion 11 of the connecting arm 8 is engaged with the recess 12 to maintain the aligned state. In this holding state, if the air filter 3 is pulled toward you, the protrusion 11
Is released from the recess 12 and released. A guide member 13 that fits inside the holding frame 6 is provided on the front surface of the main body 2 vertically and horizontally, and a handle 14 is integrally formed on the lower portion of the front surface of the holding frame 6.

The ventilating fan having the above-mentioned structure also has a troublesome main body 2 for cleaning.
The front surface and the exhaust air passage are covered with the air filter 3 so that the air filter 3 is not easily soiled, but the air filter 3 is easily soiled by that much. To replace or clean the air filter 3,
If the handle 14 of the holding frame 6 is pulled toward you and the projection 11 of the connecting arm 8 is released from the recess 12 to release the holding state, the entire air filter 3 is rotated below the main body 2 to be in the hanging state. At this low position, the air filter 3 may be removed from the connecting arm 8 and replaced with a new one or cleaned and reattached. Therefore, even if the ventilation fan is installed at a relatively high place, the work is easy and the reliability is high. When the cleaned or replaced air filter 3 is rotated upward, the projection 11 of the connecting arm 8 engages with the recess 12 and is held in a stable aligned state.

Example 2. FIG. 5 is a perspective view of a main part showing another embodiment of the present invention, and FIG. 6 is an enlarged view of a portion indicated by an arrow A in FIG. The ventilation fan of this embodiment has a devised structure for attaching the air filter 3 and the main body 2, and has basically the same configuration as that of the first embodiment except for that.

That is, in this ventilation fan, the upper ends of the connecting arms 8 on both sides are connected by a connecting rod 15 in a beam shape, and the air filter 3 is formed on the upper edge of the holding frame 6 of the connecting rod 15. A C-shaped hinge connecting structure 16 suspends the structure so that it can be engaged and disengaged so that it can rotate. In this embodiment, in particular, the connecting arm 8 is provided with stability by the connecting rod 15 and is less likely to shake, so that the air filter 3 is firmly attached to the main body 2 and is easy to use.

Incidentally, as shown in FIG. 7, an elastic member 17 for urging the connecting arm 8 in an upright state may be attached to a pivotal support portion below the connecting arm 8 to serve as a holding means in the aligned state.
Further, the stopper 18 may regulate the downward rotation of the connecting arm 8 more than necessary.

[0017]

As is apparent from the above description of the embodiments, according to the present invention, the air filter aligned with the front surface of the main body is rotated downward in the vertical plane and separated from the front surface of the main body. It can be positioned further downward, and even if it is attached to a high place, reliable replacement of the filter and cleaning and replacement of the air filter itself can be performed at a low position.

According to another ventilation fan of the present invention, the air filter itself can be easily replaced, and
Since the connecting arm is connected by the connecting rod, the shake is less likely to occur during the rotation, and the stability of the air filter is increased and the air filter is easy to use.

[Brief description of drawings]

FIG. 1 is a perspective view of a ventilation fan showing an embodiment of the present invention.

FIG. 2 is a side view of the ventilation fan of the embodiment as well.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is an enlarged explanatory view of a protrusion and a recess in the embodiment.

FIG. 5 is a perspective view of a main part of a ventilation fan showing another embodiment of the present invention.

6 is an enlarged view of a portion indicated by an arrow A in FIG.

FIG. 7 is a perspective view of a main part of a ventilation fan showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction port 2 Main body 3 Air filter 6 Holding frame 7 Filter material 8 Connecting arm 9 Joint structure 10 Pivoting protrusion 11 Protrusion 12 Recessed portion 15 Connecting rod 16 Hinge connecting structure

Claims (2)

[Claims] 1. A replaceable air filter comprising a holding frame that aligns a front surface of a main body with a suction port for sucking exhausted air with the front surface of the main body, and a filter material held by the holding frame. In the ventilation fan to be covered, the holding frame is detachably connected to the main body by connecting arms provided on both sides so that the holding frame can be rotated downward in a vertical plane from the state of being aligned with the front surface of the main body. A ventilation fan comprising holding means for holding the frame in alignment with the front surface of the main body. 2. The ventilation fan according to claim 1, wherein the upper ends of the connecting arms on both sides are connected by a connecting rod, and the holding frame is rotatably suspended on the connecting rod at its upper edge.