JP4703995B2 - Louver and ventilator equipped with the same - Google Patents

Description

  The present invention relates to a louver attached to an air conditioner or a ventilator installed on a ceiling or the like.

  Conventionally, a louver of this type is known in which a louver mounting bracket is fixed to a boss formed integrally with the louver with a screw (for example, see Patent Document 1).

The configuration will be described below. The louver shown in FIG. 7 has a louver mounting bracket 106 having a screw insertion hole 104 at both ends and a spring 105 for fixing to a ventilation device body fixed to a boss portion 102 integrally formed on the rear surface side of the louver body 101. The louver body 101 is attached to the ventilator body by screwing the screws 103.
JP 2003-65592 A

  However, in the conventional louver, the louver main body 101 is attached to the ventilator main body via the louver attaching metal fitting 106, and the louver attaching metal fitting 106 is screwed into a boss portion 102 itself integrally formed with the louver main body 101. Since it is fixed, stress is applied to the boss portion 102 due to excessive tightening of the screw 103, and in the unlikely event that excessive stress is applied, there is a problem that the boss portion 102 is cracked or the like. .

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a louver that prevents the louver body from dropping even if a boss portion is broken.

  A louver for solving a conventional problem is a louver attached to a lower portion of the ventilation device in a state where a ventilation device having a ventilation path is installed therein, and a louver mounting member that engages with the ventilation device; A boss portion protruding to the rear surface side and having a hollow portion inside, and a nut provided in a loosely fitted state in the hollow portion in order to fix the louver mounting member from the rear surface side to the boss portion with a screw. Features.

  Another means is characterized in that the nut has an axial length dimension larger than an outer diameter dimension thereof.

  Another means is characterized in that the hollow portion has an opening on the front side of the louver, and a decorative panel is provided on the front side of the louver to cover the opening from below.

  The other means projects from the rear surface of the decorative panel fixed to cover the front side of the louver, is provided with a rib having a claw portion at an end portion, and projects the claw portion toward the rear surface side of the louver. An attachment member is interposed between the claw portion and the rear surface of the louver.

  In another aspect, the rib is provided on both the one side and the other side of the louver mounting member.

  The other means is characterized in that a restricting portion for restricting movement of the louver mounting member is provided at a position where the louver mounting member is sandwiched between the ribs.

  Another means is characterized in that the claw portions are formed in a direction facing each other.

Another means is characterized in that a decorative panel mounting claw for fixing the decorative panel to the louver is provided.

  Another means is characterized in that an auxiliary metal fitting is provided between the claw portion and the louver mounting member.

  In addition, a ventilating apparatus for solving the conventional problems is a main body having any one of the louvers and an opening communicating with the duct on a side surface, and the louver attached to an opening end communicating with the opening. It is characterized by comprising.

  According to the present invention, the boss provided in the louver is hardly subjected to stress due to a screw for fixing the louver mounting member, so that the occurrence of cracks in the boss is reduced and the louver is prevented from falling off. Provided ventilation device can be provided.

The louver according to claim 1 of the present invention is a louver mounting member that engages with a ventilating device, a boss that protrudes to the rear surface side that is the ventilating device side and that has a hollow portion inside, and the louver mounting member that faces the rear surface side. And a nut accommodated in the hollow portion for fixing to the boss portion with a screw, and the nut is freely movable in the axial direction of the boss portion, and the circumferential movement of the boss portion is It was held in a loose-fitting state in which a gap was formed between the outer shape of the nut and the inner peripheral surface of the boss part to the extent that it was regulated, and the axial length was made larger than the outer diameter Because the nut is held loosely in the cavity, the contact area between the nut and the inner periphery of the boss is small. This reduces stress applied to the boss. As a result, the boss part is less likely to crack and the louver body can be prevented from falling off, and the nut is inserted into the hollow part by forming the nut into an elongated shape in the axial direction. In this case, it is possible to prevent the nut from being greatly inclined with respect to the axial direction of the boss portion in the hollow portion and being unable to be securely fixed by screws.

Invention according to claim 2, characterized in louver of claim 1, said hollow portion the front side of the louver is opened, provided with a decorative panel that covers from below the opening on the front side of the louver The decorative panel has a function to cover the cavity, holds the nut in the proper position, covers the louver when the entire louver is made of resin, and covers the cavity and nut. The design can be improved.

The invention described in claim 3 is the louver of claim 2, prior to protrude from the rear surface of the hear粧panel, the rib having a claw portion provided at the end portion, the pawl portion on the rear surface side of the louver And the louver mounting member is interposed between the claw portion and the rear surface of the louver, and the boss portion loses the function of fixing the louver mounting member due to cracking or the like. Even if the decorative panel is dropped from the louver body for some reason, the claw portion formed on the rib holds the louver mounting member in a suspended state, and the decorative panel is not immediately dropped off.

According to a fourth aspect of the present invention, in the louver according to the third aspect , the rib is provided on both one side and the other side of the louver mounting member, and the louver mounting member is a louver. When a situation such as dropping off occurs, it is possible to prevent the louver from being tilted and to hold the louver mounting member more stably and to reduce the possibility of dropping. .

According to a fifth aspect of the present invention, in the louver according to the third or fourth aspect , a restricting portion for restricting the movement of the louver mounting member is provided at a position where the louver mounting member is sandwiched between the ribs. Even if the boss part loses the function of fixing the louver mounting member due to cracking, etc. The decorative panel and the louver body can be prevented from falling by holding in a suspended state and preventing the louver mounting member from moving laterally from that state.

According to a sixth aspect of the present invention, in the louver according to the fourth aspect , the claw portions are formed in a direction facing each other, and the boss portion of the louver main body is formed by cracking or the like. When the function of fixing is lost, the claw portion holds the louver mounting member from both sides, so that the function of the claw portion to hold the louver mounting member in a suspended state can be surely exhibited.

The invention described in claim 7 is characterized in that in the louver according to any one of claims 2 to 6 , a decorative panel mounting claw for fixing the decorative panel to the louver is provided, and screws or the like are used. Compared with the fixing method, the number of parts and the cost are reduced, and it is not necessary to provide a boss for fixing the decorative panel to the louver body with screws. The design property can be improved.

The invention according to claim 8 is characterized in that, in the louver according to any one of claims 3 to 7 , an auxiliary metal fitting interposed between the claw portion and the louver mounting member is provided, Even if the boss part loses the function of fixing the louver mounting member due to cracking, etc., or the decorative panel falls off from the louver body for some reason, the force applied to the claw part that holds the louver mounting member in a suspended state is an auxiliary bracket The load applied to the claw part that supports the louver body can be reduced, and the louver body can be prevented from falling.

A ventilator according to a ninth aspect has the louver according to any one of the first to eighth aspects, an opening communicating with the duct on a side surface, and the louver attached to a lower opening end communicating with the opening. Since the nut is held loosely fitted in the cavity, the contact area between the nut and the inner periphery of the boss is small, so the screw is screwed. By reducing the stress exerted on the boss portion by the nut due to the rotational force at the time of joining, it becomes difficult for the boss portion to crack and the like, and a ventilation device that prevents the louver body from falling can be obtained.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to FIGS.

  The louver described in the present invention will be described by taking, as an example, a louver attached to an opening provided in a lower part of a ceiling-embedded ventilation device.

  As shown in FIG. 1 to FIG. 5, a structure having a suction port or a blower outlet in the lower portion and communicating with an adapter 16 provided on the side surface through a blower that communicates with an air passage formed inside the opening. The louver 1 is attached to a ventilator 13 as a ventilation device that forms a position at a position facing the room. The ventilation device 13 is fixed in such a manner that the main body is housed on the back side of the ceiling plate 12 in which the embedding port 19 is formed, and the duct 15 held by a suspension band 20 fixed to the ceiling wall 18 by an anchor bolt or the like is connected to the adapter 16 It connects to the outdoor 14 by connecting to.

  When attaching the louver 1 to the main body of the ventilator 13, the louver 1 is engaged with the engagement hole 21 provided in the ventilator 13 visible from the living room with the width of the spring 7 fixed to the louver 1 being reduced by hand, When the louver 1 is brought close to the ventilator 13 so as to cover the lower opening of the ventilator 13 and the external force applied in the direction of narrowing the spring 7 by hand is released, the louver 1 is attached to the main body of the ventilator 13 by the spring 7. It is attached by the elastic force.

  As shown in FIGS. 1 and 3, the louver attachment member attached to the lower part of the ventilation device 13 is composed of a bifurcated spring 7 having an urging force that opens outward and an elongated louver attachment fitting 5. The mounting member is fixed together with the spring 7 by a screw 4 in a state where it is placed on the end of the boss portion 2 protruding to the rear surface side of the louver 1. The louver mounting bracket 5 is formed with holes through which the threaded portion of the screw 4 penetrates at both ends, but the louver mounting bracket 5 is fixed to the boss portion 2 and the louver 1 is connected to the ventilator 13 via the spring 7. The number is not particularly limited as long as it can be fixed and attached, and a hole through which the screw portion of the screw 4 passes may be formed in the center portion of the louver mounting bracket 5.

  A hollow portion is formed inside the boss portion 2, and this hollow portion communicates with an opening formed at an end portion of the boss portion 2, and a nut 3 screwed with a screw 4 is loosely fitted in the hollow portion. It is stored in the state. The nut 3 housed in a loosely fitted state in the cavity is configured such that the nut 3 can freely move in the axial direction of the boss 2, but its movement is restricted in the circumferential direction of the boss 2. In this configuration, a gap is formed between the outer shape of the nut 3 in the radial direction and the inner peripheral surface of the boss portion 2. The outer shape of the nut 3 is formed of a hexagonal shape, a quadrangular shape, or other polygons, and the inner peripheral shape of the boss portion 2 is formed in a polygonal shape slightly larger than the outer shape of the nut 3. Moreover, the axial length dimension of the nut 3 is larger than the external dimension in the radial direction, and the nut 3 has an elongated shape in the axial direction. As an example of the detailed dimensions of the nut 3, the axial length is 12.5 mm, the maximum value of the outer dimension in the radial direction (distance between the farthest vertices) is 8 mm, the minimum value of the outer dimension is 7 mm, and M4 The gap between the nut 3 and the inner peripheral surface of the boss 2 is 1 mm at the maximum and 0.5 mm at the minimum.

  Thus, when the nut 3 is housed in a loosely fitted state in the hollow portion, when the louver mounting member is fixed to the boss portion 2, when the screw 4 is screwed into the nut 3, the nut 3 When the outer peripheral portion of the nut 3 comes into contact with the inner peripheral surface of the boss portion 2, rotation of the nut 3 in the circumferential direction is restricted, and contact between the outer peripheral portion of the nut 3 on which the rotational force acts and the inner peripheral surface of the boss portion 2. Since the area is reduced, it is possible to reduce the transmission of the rotational torque for tightening the screw 4 to the inner peripheral surface of the boss portion 2. For this reason, breakage such as cracking of the boss portion 2 at the time of screw tightening can be prevented, and deterioration of the boss portion 2 due to secular change or the like can be delayed, so that the louver can be prevented from falling off.

  The front side of the louver 1 of the hollow portion is opened so that the nut 3 can be inserted. After the nut 3 is inserted into the hollow portion, the nut 3 is placed in the axial direction of the boss portion 2 with a small inconspicuous lid such as a cap. I try not to fall out. As shown in FIGS. 1 and 2, when the decorative panel 6 is attached so as to cover the front side of the louver 1, the rear surface side of the louver 1 is locked by the decorative panel mounting claws 9 protruding from the rear surface 11 of the decorative panel. Then, the decorative panel 6 is fixed to the front surface of the louver 1. At this time, the opening leading to the cavity for inserting the nut 3 is closed with the decorative panel 6 instead of a lid such as a cap, and the aesthetics of the louver 1 as a whole are further improved.

  The decorative panel 6 fixed to the front side of the louver 1 by the decorative panel mounting claw 9 has a claw portion 24 that protrudes from the rear surface 11 and has an end portion that is substantially parallel to the rear surface 11 of the decorative panel 6. A provided rib 8 is provided. When the decorative panel 6 is attached to the louver 1, the rib 8 is inserted into the rib through hole 10 opened from the front surface side of the louver 1 to the front surface of the louver 1 and protrudes to the rear surface side of the louver 1. As shown in FIGS. 2 and 3, the louver mounting bracket 5 constituting the louver mounting member is arranged in a positional relationship such that it is interposed between the rear surface of the louver 1 and the claw portion 24.

  In this way, the louver mounting bracket 5 is interposed between the rear surface of the louver 1 and the claw portion 24 so that the boss portion 2 is cracked and the louver mounting bracket 5 is fixed. Even if the function is lost, the claw portions 24 of the ribs 8 provided on the decorative panel 6 are suspended from the louver mounting bracket 5 to perform the function of holding the louver 1 and to prevent the louver 1 from falling off. it can.

  Further, when the ribs 8 are provided separately on both the one side and the other side of the louver mounting bracket 5 constituting the louver mounting member, the function of holding the louver mounting bracket 5 by the claw portion 24 is further improved. .

  Further, as shown in FIGS. 1 and 2, when a pair of ribs 8 are provided on the louver mounting bracket 5 and the claw portions 24 provided at the ends of the ribs 8 are formed so as to protrude in the mutually facing direction, Since the portion 24 holds the louver mounting bracket 5 from both sides, the claw portion 24 can reliably exhibit the function of holding the louver mounting bracket 5 in a suspended state.

  A restricting portion 22 that restricts the movement of the louver mounting bracket 5 is formed on the rear surface of the louver 1 at a position where the louver mounting bracket 5 is sandwiched between the ribs 8. The restricting portion 22 may be formed by cutting and raising a part of the rear surface of the louver 1, or may be configured as a separate part fixed to the rear surface of the louver 1. By providing such a restricting portion 22, even if a situation in which the boss portion 2 is damaged occurs and the louver 1 is dropped, the lateral movement of the louver mounting member can be suppressed. The function to hold | maintain can be improved further. Further, when the restricting portion 22 has flexibility, the restricting portion 22 bends when the louver mounting bracket 5 is set between the rib 8 and the restricting portion 22, so that the louver mounting bracket 5 is laterally moved. Since it can slide, workability | operativity will improve.

  The auxiliary metal fitting 23 is interposed between the claw portion 24 and the louver fitting 5 constituting the louver attachment member, and the claw portion 24 is reinforced by the auxiliary metal fitting 23. The auxiliary metal fitting 23 is preferably formed in a substantially U-shape with a shape along the inside of the rib 8. By providing such an auxiliary metal fitting 23, even when the decorative panel 6 is dropped from the louver 1 for some reason or when the boss part 2 is damaged, it is applied to the claw part 24 that holds the louver fitting 5 in a suspended state. The force can be distributed to the auxiliary metal fitting 23.

  In addition, the ventilator to which the louver of the present invention is attached includes not only a device having a blower inside but also a so-called ventilation box that does not have a forced air function, so that the louver may be dropped. There is no difference in the effect to prevent.

  In addition, the louver mounting member of the present invention is not limited to a metal, and any material or shape having a strength capable of supporting the weight of the louver is, for example, made of resin within the scope of the louver mounting member of the present invention. Is included.

  In addition, the louver of the present invention is not limited to a resin product as long as the boss portion may be damaged due to excessive stress or deterioration.

  The louver of the present invention can also be applied to grills and inspection lids provided on the ceiling surface, in addition to the components that form the openings of air conditioning equipment and ventilators attached at high places.

1 is an exploded perspective view showing a configuration of a louver according to Embodiment 1 of the present invention. The perspective view which shows the state which attached the decorative panel to the louver The fragmentary sectional view which shows the structure in the boss | hub part in the same louver Partial sectional view showing the relationship between ribs and louver mounting members in the louver Sectional drawing which shows the construction state of the ventilation apparatus provided with the louver A perspective view showing the relationship between the louver and the ventilator body An exploded perspective view showing a configuration of a conventional louver

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Louver 2 Boss part 3 Nut 4 Screw 5 Louver attachment bracket 6 Cosmetic panel 8 Rib 9 Cosmetic panel attachment nail 13 Ventilator 22 Restriction part 23 Auxiliary metal fitting 24 Nail part

Claims (9)

A louver attached to a lower part of a ventilating device having a ventilation path therein, a louver mounting member that engages with the ventilating device, and a boss portion that protrudes to the rear side that is the ventilating device side and has a hollow portion inside A nut accommodated in the cavity for fixing the louver mounting member from the rear surface side to the boss with a screw, the nut being freely movable in the axial direction of the boss and A gap is formed between the outer shape of the nut and the inner peripheral surface of the boss part to such an extent that the movement of the boss part in the circumferential direction is restricted, and the axial direction is larger than the outer diameter dimension. A louver characterized by the increased length dimension. The louver according to claim 1, wherein the hollow portion has an opening on the front side of the louver, and a decorative panel is provided on the front side of the louver to cover the opening from below. Protruding from the rear surface of the decorative panel, provided with a rib having a claw portion at the end, projecting the claw portion to the rear surface side of the louver, and placing the louver mounting member between the claw portion and the rear surface of the louver. The louver according to claim 2, wherein the louver is interposed. The louver according to claim 3, wherein the rib is provided on both the one side and the other side of the louver mounting member. The louver according to claim 3 or 4, wherein a restricting portion for restricting movement of the louver attaching member is provided at a position sandwiching the louver attaching member between the ribs. The louver according to claim 4, wherein the claw portions are formed in directions facing each other. The louver according to any one of claims 2 to 6, wherein a decorative panel mounting claw for fixing the decorative panel to the louver is provided. The louver according to any one of claims 3 to 7, further comprising an auxiliary metal fitting interposed between the claw portion and the louver mounting member. A louver according to any one of claims 1 to 8, and a main body having an opening communicating with a duct on a side surface, and a main body to which the louver is attached at a lower opening end communicating with the opening. Ventilation equipment to do.

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