JP4265467B2 - Ventilation fan - Google Patents

Description

  The present invention relates to a ventilation fan that is provided with a front panel that can be freely opened and closed in a main body, that is closed during operation and that can be opened during inspection or cleaning.

  Conventionally, an indoor unit of an air conditioner that opens and closes a suction grill provided on a front panel is known as an example of this type of ventilation fan (see, for example, Patent Document 1).

  Hereinafter, the indoor unit of the air conditioner will be described with reference to FIGS. 14 and 15.

As shown in the figure, a holder 103 that rotatably holds a suction grille 102 fitted to the front panel 101 is provided, and a pivoting arm 106 having a shaft 104 and a hooking part 105 on the side surface is provided on the suction grille 102. A holding part 107 for holding the hanging part 105 and a shaft holding part 108 are provided on the holder 103, and the shaft 104 is rotatably supported on the suction grille 102 by the shaft holding part 107 of the front side panel 101; The positional relationship can be held at a predetermined oblique position.
JP 2001-82758 A ([0019] to [0020] FIGS. 3 and 4)

  In such a conventional indoor unit of an air conditioner, the suction grille 102 that is rotatably provided on the front side panel 101 is opened and closed by a turning arm having a shaft 104 and a hooking part 105 on the side surface. The shaft 104, which sometimes serves as a fulcrum, rotates at a fixed location. Since the shaft 104 is provided at a position with a margin so that the suction grill 102 does not contact the front panel 101 when opening and closing, the suction grill 102 is provided. There is a problem that a large gap must be provided between the front panel 101 and the front panel 101 at the time of closing, and it is required that the gap need not be provided.

  The present invention solves such a conventional problem, and provides a ventilation fan that can be opened and closed smoothly when the front panel is closed, tightly contacted with the main body, without air leakage, and without being collided with the main body when opened. The purpose is to do.

For the ventilator of the present invention to achieve the above object, a body having a ventilation function, and a front panel that is provided in a shape covering the front of the main body, the rotary shaft to the left and right rear upper portion of the front panel the provided a pair of arms provided, said shaft hole rotation axis that match the engagement of the front panel provided on the left and right of the front side of the main body, and rotates obliquely vertically the front panel as a fulcrum upper portion A ventilating fan that can be freely opened and closed on the main body, and the shaft hole is engaged with the rotation shaft moving from the lowermost portion to the upper portion when the panel is opened and closed. It is formed in a substantially oval shape that faces obliquely upward .

By this means, it is possible to smoothly avoid a collision between the front panel and the main body, and to improve the openability of the front panel .

  Another means is that the rotation shaft provided on the front panel is formed in an oval cross section, a cylindrical convex portion is provided at the center of the rotation shaft, and the center portion of the shaft hole provided in the support means Is provided with a groove.

  By this means, the front panel can be easily removed.

  Another means is that the arm provided on the front panel is formed as a separate part.

  By this means, the front panel and the arm can be formed of a material having different characteristics.

  Another means is configured to fix an arm provided on the front panel by providing a screw boss portion on the front panel or the arm.

  By this means, stability of fixing the front panel and the arm can be obtained.

  Another means is that a support portion for supporting the front panel at a certain opening angle is provided around the shaft hole provided in the main body.

  By this means, the front panel can be fixed at a constant opening angle.

  In another means, a pivot shaft is provided on one side of an arm provided on the front panel, and an engaging portion that engages with the main body is provided on the same side or the opposite side.

  By this means, it is possible to prevent the turning shaft from coming off when the front panel and the main body are engaged.

  ADVANTAGE OF THE INVENTION According to this invention, the ventilation fan with the effect which can avoid the collision with a main body smoothly at the time of opening and closing of a front panel can be provided.

  Moreover, the openability of the front panel can be improved.

  Also, the front panel can be easily removed.

  Further, the front panel and the arm can be formed of materials having different characteristics.

  Further, the stability of fixing the front panel and the arm can be obtained.

  In addition, the front panel can be fixed at a certain opening angle.

  Further, it is possible to prevent the rotation shaft from coming off when the front panel and the main body are engaged.

The invention according to claim 1 of the present invention includes a main body provided with a ventilation function, and a front panel provided in a shape covering the front of the main body, and provided with rotating shafts on the left and right of the upper back of the front panel. provided a pair of arms, said shaft hole rotation axis that match the engagement of the front panel provided on the left and right of the front side of the body, said body pivots obliquely vertically the front panel as a fulcrum upper portion A ventilating fan that can be freely opened and closed, and is detachably provided, wherein the shaft hole is obliquely upward where the pivot shaft moves and engages between the lowermost portion and the upper portion when the panel is opened and closed. The front panel is formed when the front panel is opened because the rotating shaft provided on the front panel engages with the long shaft hole at the front and rear provided on the main body. Do not move the pivot shaft provided to the front side of the long shaft hole before and after the main body is provided. By opening the Luo front panel, the front panel is opened at a position away from the main body, the collision relative to the body can be avoided smoothly naturally, also pivot shaft provided on the front panel is obliquely upward provided in the body By moving diagonally upward along the shaft hole formed in a substantially oval shape facing forward, the front panel also moves diagonally upward, and the force that opens the front panel upward acts on the rotating shaft. The rotating shaft moves smoothly, and the front panel can be opened and closed smoothly, thereby improving the opening and closing performance .

According to a second aspect of the present invention, the rotation shaft provided on the front panel is formed in an oval cross section, a cylindrical convex portion is provided at the center of the rotation shaft, and the shaft hole provided in the main body A groove is provided at the center of the front panel, and the rotary shaft provided on the arm of the front panel is formed in an oval cross section so that the rotary shaft can be removed from the shaft hole of the main body. The pivot shaft can be removed from the shaft hole only when the front panel is opened in a substantially horizontal state so that the oval shape of the pivot plate is in a substantially horizontal position, and the oval portion of the pivot shaft provided on the front panel is vertical. When the front panel is closed, the front panel cannot be removed, and the front panel can be removed only when the front panel is opened at a certain angle.

Further, the invention described in claim 3 is that the arm provided on the front panel is formed as a separate part. The front panel can be formed of a lightweight material so that it can be easily opened and closed, and the arm needs strength. Therefore, it can be formed of a strong material, and either the front panel or the arm can be formed of a recyclable material, which contributes to recycling.

The invention described in claim 4 is configured such that the arm provided on the front panel is configured to fix the screw boss portion on the front panel or the arm, and when the screw boss portion is provided on the arm side. A mounting piece is provided on the inner surface of the front panel, and a mounting screw is screwed onto the screw boss through the mounting piece. If the screw boss is provided on the inner surface of the front panel, the arm is screwed through the mounting screw. Since it can be screwed onto the boss and attached, the arm can be firmly attached via the attachment screw without exposing the attachment screw to the surface of the front panel. Have.

Further, the invention according to claim 5 is provided with a support portion for supporting the front panel at a constant opening angle at the periphery of the shaft hole provided in the main body, and when rotating to open the front panel. When the front panel rotates by a certain angle, the arm engages and is supported by the support portion provided on the main body side, and the front panel is supported via the support portion with the constant angle open. The panel can be opened at a certain angle.

According to a sixth aspect of the present invention, there is provided an engaging portion that is provided with a rotation shaft on one side surface of an arm provided on the front panel and engages with the support portion provided on the same side surface in the peripheral portion of the shaft hole of the main body. When the front panel is rotated by a certain angle, the engagement portion provided on the arm is engaged with the support portion, so that the front panel can be stably opened at a certain angle. it can. In addition, by providing an engagement portion that engages with the support portion provided in the peripheral portion of the shaft hole of the main body on the side surface opposite to the rotation shaft provided in the arm, the front panel rotates at a constant angle. When the engaging portion provided on the arm is engaged with the support portion, the deformation of the arm is caused by the deformation of the rotating shaft in a direction approaching the shaft hole, so that the rotating shaft is The front panel can be opened at a constant angle more stably without being detached from the shaft hole.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 13, a vent hole 2 is formed between the main body 1 provided with a ventilation function such as a blower (not shown) and the front of the main body 1. As shown in the figure, a front panel 3 that can be freely opened and closed with the upper portion as a fulcrum is provided, and a rotating shaft 4 that is formed in an oval cross section on the left and right of the upper back of the front panel 3 and a rotating shaft. A front panel is provided with an arm 8 formed by forming a cylindrical convex portion 5 at the center of the moving shaft 4 in a substantially fishhook shape provided on the tip side and a screw boss portion 7 to which a mounting screw 6 is screwed on the root side. A pair of mounting screws 6 are screwed onto the screw bosses 7 via mounting pieces 9 provided on the front panel 3, and the front panel 3 is mounted in a pair so that the fishhook-shaped portion faces upward.

  Further, the main body 1 is formed with a space portion 11 into which the arm 8 can be inserted, and the side wall 12 of the space portion 11 is obliquely upward where the rotary shaft 4 provided on the arm 8 attached to the front panel 3 is engaged. A substantially oval shaft hole 13 facing forward and an oval groove 14 along the shaft hole 13 in the center of the shaft hole 13 are formed in two stages, and an arm is formed in the shaft hole 13 of the side wall 12. A flat part of the rotating shaft 4 is inserted in a substantially horizontal position of the front panel 3 in which the oval rotating shaft 4 provided in 8 is in a horizontally long state, and an attaching / detaching groove 15 is provided in which the front panel 3 can be attached and detached.

  Further, a support portion 16 that can support the front panel 3 is provided in a part of the peripheral portion of the shaft hole of the side wall 12 of the space portion 11 of the main body 1, and the main body 1 is provided on one side surface of the arm 8 provided on the front panel 3. When the engaging portion 17 that abuts against the side wall 12 of the space portion 11 is provided and the front panel 3 is opened in a substantially horizontal state, the engaging portion 17 provided on the front panel 3 is elastic to the support portion 16 provided on the main body 1. The front panel 3 is configured to be engaged and locked to be held in a horizontal state.

  In the above configuration, when the ventilation fan is operated with the front panel 3 closed, as shown in FIG. 1, the pivot shaft 4 and the convex portion 5 of the arm 8 provided on the front panel 3 are provided on the axis provided on the main body 1. It is in the state located in the lowermost part of the hole 13 and the groove part 14, and indoor air flows in into the main body 1 which provided the ventilation function from the vent hole 2 formed between the main body 1 and the front panel 3, and the outdoor Ventilation is performed by exhausting.

  When checking, cleaning, or replacing the blower or heat exchanger provided in the main body 1, in order to open the front panel 3, the front panel 3 is rotated about the rotation shaft 4 and the front panel 3 is moved. By lifting upward, the rotation shaft 4 rotates in an oblong shaft hole 13 obliquely upward and forward, and the rotation shaft 4 rotates in the groove portion 14 while the convex portion 5 rotates in the groove portion 14. 13, the convex portion 5 moves obliquely upward along the groove portion 14, and the front panel 3 opens while moving so that the end of the front panel 3 moves away from the front end of the main body 1. The engaging portion 17 provided on the surface opposite to the surface on which the rotation shaft 4 of the arm 8 provided is engaged with the support portion 16 provided on the side wall 12 of the space portion 11 provided on the main body 1, The arm 8 is deformed in a direction in which the rotation shaft 4 approaches the shaft hole 13, and the engaging portion 17 gets on the support portion 16. If the arm 8 is exceeded, the deformation of the arm 8 is restored, and the front panel 3 is supported at a certain opening angle without the rotation shaft 4 being removed from the shaft hole 13, and the inside of the main body 1 is inspected, cleaned, and replaced. Can do.

  When the front panel 3 is to be removed, the front panel 3 is in a substantially horizontal state, and the engaging portion 17 provided on the arm 8 of the front panel 3 is elastically engaged with the support portion 16 provided on the main body 1 and locked. By pulling the front panel 3 forward in a state in which it is in a locked state, the flat portion of the rotating shaft 4 provided on the arm 8 is in a horizontal state. The convex part 5 is pulled out and the front panel 3 is removed.

  Then, when the front panel 3 is attached, the front panel 3 is set in a substantially horizontal state so that the front panel 3 is in a reverse state, and the rotating shaft 4 and the convex portion 5 provided on the arm 8 are placed in the space of the main body 1. The front panel 3 is engaged with the shaft hole 13 and the groove portion 14 via the attaching / detaching groove 15 formed in the side wall 12 of the portion 11 and the support panel 16 and the engaging portion 17 are released from the locked state. The front panel 3 is attached so as to cover the front of the main body 1 by moving in the closing direction with respect to the fulcrum, and can be operated as a ventilation fan.

  In the first embodiment, it has been described that the screw boss portion 7 is provided on the arm 8 side attached to the front panel 3, but the arm 8 may be attached by providing the screw boss portion 7 on the front panel 3 side. Further, the engaging portion 17 provided on the arm 8 may be provided on the side surface of the arm 8 provided with the rotating shaft 4 or on the opposite side surface, and does not produce a difference in the operation effect.

  The present invention can also be applied to an opening / closing mechanism for a grill provided on the front surface of an indoor unit of an air conditioner by using an opening / closing mechanism for opening / closing the front panel.

Sectional drawing which shows the attachment state of the front panel of the ventilation fan of Embodiment 1 of this invention Perspective view of the ventilation fan Schematic perspective view of the ventilation fan with the front panel opened Schematic perspective view of the main body of the ventilation fan Rear perspective view of the front panel of the ventilation fan Sectional drawing which shows the state at the time of the attachment or detachment of the front panel of the ventilation fan Sectional drawing which shows the state when the front panel of the ventilation fan is open at a certain angle Sectional drawing which shows the locked state at the time of opening of the front panel of the ventilation fan Sectional drawing which shows the state of the rotating shaft in the middle of opening of the front panel of the ventilation fan Sectional drawing which shows a state when the front panel of the ventilation fan is opened by hand Sectional drawing which shows a state when the front panel of the ventilation fan is opened and held Perspective view of the arm attached to the front panel of the ventilation fan Sectional drawing which shows the state which attached the arm to the front panel of the ventilation fan The principal part side view which shows the state which attached the suction grille of the indoor unit of the conventional air conditioner Projection view of the main part showing the state when the suction grill is attached / detached

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 3 Front panel 4 Rotating shaft 5 Convex part 7 Screw boss part 8 Arm 13 Shaft hole 14 Groove part 16 Support part 17 Engagement part

Claims (6)

A body having a ventilation function, and a front panel that is provided in a shape covering the front of the body, provided the pair of rear upper arm provided with two left and right rotation axes of said front panel, rotation of said front panel provided the axis of the shaft hole that match engaging the left and right front side of the body, there the front panel rotates obliquely vertically fulcrum upper portion with ventilation fan provided to be opened and closed freely detachable to the main body The shaft hole is formed in an approximately oval shape that faces obliquely upward and forward when the rotation shaft moves and engages between the lowermost portion and the upper portion when the panel is opened and closed. A ventilation fan characterized by that . A rotation shaft that is provided on the front panel is formed in the cross-sectional elliptical shape, a columnar protrusion provided at the center of the pivot shaft, according to claim 1, a groove is provided in the center of the shaft hole provided in the body A ventilation fan as described in 1. The ventilation fan of Claim 1 or 2 which formed the arm provided in a front panel with another component. The ventilation fan according to claim 3 , wherein the arm provided on the front panel is configured to be fixed by providing a screw boss portion on the front panel or the arm. The ventilation fan in any one of Claims 1-4 which provided the support part which supports a front panel with a fixed opening angle in the peripheral part of the shaft hole provided in the main body. The ventilation fan according to any one of claims 1 to 5 , wherein a rotation shaft is provided on one side surface of an arm provided on the front panel, and an engaging portion that engages with the main body is provided on the same side surface or the opposite side surface.

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