JP2013096649A - Falling prevention fitting for air-conditioning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a falling prevention fitting surely fixing a mounting fitting of an air-conditioning indoor unit to a suspension bolt in a single operation even when a nut of the suspension bolt looses or is forgotten to be tightened.SOLUTION: The falling prevention fitting includes: a vertical piece 11 for closing a cutout groove 5 for mounting when installing the mounting fitting 1; horizontal pieces 12, 13 extended in the same direction from the opposite ends of the vertical piece 11; a cutout groove 15 for fixation formed from the front ends of both horizontal pieces 12, 13 toward the vertical piece 11 in accordance with the cutout groove 5 for mounting and overlapping with the cutout groove 5 for mounting to form an insertion space for the suspension bolt 6 when installed to the mounting fitting 1; and an engagement piece 17 provided on one horizontal piece 13, cut and raised from the horizontal piece 13 toward the vertical piece 11 and having a front end 16 engaging with a bent piece 4 of the mounting fitting 1 when installed to the mounting fitting 1.

Description

  The present invention provides a drop-off of air-conditioning equipment in which a hanging bolt from a ceiling attached to a mounting bracket of an air conditioning indoor unit does not fall off from the mounting bracket when a large shake such as an earthquake is input to a building. It relates to prevention metal fittings.

  Conventionally, hanging bolts are suspended from anchors embedded in ceiling slabs of buildings such as buildings and condominiums, or ceilings of ordinary houses, and suspended on mounting brackets attached to the side surfaces of air-conditioning indoor units via vibration-proof fittings. The lower end of the bolt was attached and the air conditioning indoor unit was installed in line with the system ceiling.

  The shape of the mounting bracket varies depending on the manufacturer of the air conditioning indoor unit, but basically the bracket main body that is attached to the side surface of the air conditioning indoor unit, the horizontal mounting piece that is bent from the upper end of the bracket main body and extends horizontally, and the tip of the horizontal mounting piece And a notched groove that extends from the folded piece to the center of the horizontal mounting piece is formed. And the lower end part of the suspension bolt was inserted into this notch groove from the side, and the horizontal mounting piece was fixed by tightening the nut from the top and bottom (Patent Document 1).

JP-A-8-75240

  However, the installation part of such an air conditioning indoor unit is located on a high ceiling where it is difficult for the operator to reach, and the work of fixing the horizontal mounting piece from above and below by double nuts is not necessarily done. It may be loose for a long period of time, or simply the four side surfaces of the air conditioning indoor unit may be locked to the suspension bolt by the mounting bracket.

  In this situation, if a large earthquake is input to the building, the entire building will shake greatly, and a large relative displacement and a large force will be applied to the mounting part between the ceiling slab and the air conditioning indoor unit in the horizontal and vertical directions. There was an accident where the suspension bolts were removed and the air conditioning indoor unit fell into the room.

  The present invention has been made to solve such a conventional problem, and the problem of the present invention is that even if the double nut is loosened or forgotten to be tightened, the suspension bolt and the mounting bracket can be securely attached with one touch. The object is to provide a drop-off prevention metal fitting that can be fixed.

The drop-off prevention bracket (10) of the present invention is
(A) The metal fitting body (2) attached to the side surface of the air conditioning indoor unit (M), the horizontal attachment piece (3) which is bent from the upper end of the fitting body (2) and extends horizontally, and the horizontal attachment piece (3) It is composed of a bent piece (4) with a bent end, and a mounting notch groove (5) for the suspension bolt (6) extending from the bent piece (4) to the center of the horizontal mounting piece (3) is formed, A drop-off prevention bracket (10) for mounting on a mounting bracket (1) for an air conditioning indoor unit (M) in which a suspension bolt (6) is mounted in a mounting notch groove (5),
(B) a vertical piece (11) that closes the mounting notch groove (5) when mounted on the mounting bracket (1);
(C) Horizontal pieces (12) and (13) extending in the same direction from both ends of the vertical piece (11);
(D) From the tip of both horizontal pieces (12) and (13) to the vertical piece (11), it is formed in accordance with the notch groove (5) for attachment, and when it is attached to the mounting bracket (1), A fixing notch groove (14) (15) that overlaps the notch groove (5) and constitutes an insertion space (6a) of the suspension bolt (6);
(E) Provided on one horizontal piece (13), cut and raised from the horizontal piece (13) toward the vertical piece (11), and its tip (16) is attached to the mounting bracket (1) It is characterized by comprising an engagement piece (17) engaged with the bent piece (4) of the metal fitting (1).

  The second aspect is another example of the first aspect (FIGS. 1 to 7): “From the tip of the horizontal piece (13) provided with the engagement piece (17) to the tip of the other horizontal piece (12). The bent piece (18) is formed, and a gap (19) through which at least the horizontal mounting piece (3) of the mounting bracket (1) can pass between the bent piece (18) and the other horizontal piece (12). Is provided ".

  In the drop-off prevention metal fitting (10) of the present invention, the horizontal pieces (12) (13) in the same direction from both ends of the vertical piece (11) that closes the mounting notch groove (5) when attached to the fitting (1). This horizontal piece (12) (13) is formed with a fixing cutout groove (14) (15) to match the mounting cutout groove (5) of the bracket body (2). The suspension bolt (6) attached to (1) must be inserted into the insertion space (6a) of the suspension bolt (6) so as to overlap the mounting notch groove (5) when attached to the mounting bracket (1). At that time, the engaging piece (17) is engaged with the bent piece (4) of the mounting bracket (1). As long as it does not come off the bent piece (4) of the mounting bracket (1), the fall-off prevention bracket (10) will not fall off the mounting bracket (1), so the suspension bolt (6) will come out of the mounting bracket (1). There is nothing.

  And when attaching the drop-off prevention bracket (10) to the mounting bracket (1), the drop-off prevention bracket (10) is pushed in the direction of the air conditioning indoor unit (M) to bend the engagement piece (17), and the engagement piece ( Since it is only necessary to engage 17) with the bent piece (4), the drop-off preventing metal fitting (10) can be securely attached to the attachment metal fitting (1) with one touch.

It is a perspective view before mounting | wearing of the drop-off prevention metal fitting of this invention. It is a perspective view at the time of mounting | wearing of the drop-off prevention metal fitting of this invention. (a) is the side view of FIG. 2, (b) is the side view of the modification. FIG. 3 is a front view of FIG. 2. It is a top view of the drop-off prevention metal fitting of the present invention. FIG. 6 is a side view of FIG. 5. It is the perspective view which looked up at FIG. 5 from diagonally downward. It is a perspective view before mounting | wearing with the other drop-off prevention metal fittings of this invention. It is a partially cutaway side view at the time of mounting | wearing with the drop-off prevention metal fitting in FIG. It is a side view of other drop-off prevention metal fittings of the present invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The mounting bracket (1) to which the drop-off prevention bracket (10) according to the present invention is applied is mounted on the side surface of the air conditioning indoor unit (M), and the suspension bolt (6) is mounted thereon. There are various shapes depending on the manufacturer of the air conditioner, but basically a single metal plate is formed only by press molding or combined with bending and attached to the side of the air conditioning indoor unit (M). Bracket body (2), horizontal mounting piece (3) that is bent from the upper end of the bracket body (2) and extends horizontally, and the tip of the horizontal mounting piece (3) faces downward (that is, the bracket body (2) side) And a notch groove (5) for mounting the suspension bolt (6) extending from the bent piece (4) to the center of the horizontal mounting piece (3) is formed. . When the air-conditioning indoor unit (M) is mounted as described above, the bent piece (4) is normally attached downward, but of course, the bent piece (4) may be attached upward, and according to the present invention. The drop-off prevention fitting (10) can be used even in that case.

  The shape of the mounting notch groove (5) is T-shaped with the groove depth cut off at right angles in both directions with respect to the groove inlet to facilitate position adjustment of the suspension bolt (6) and the air conditioning indoor unit (M). Is formed. The bent piece (4) has a height sufficient to prevent the nut (20) screwed to the suspension bolt (6) from falling off.

  Like the mounting bracket (1), the drop-off prevention bracket (10) is a single metal plate formed by press molding alone or by using this together with bending. The vertical piece (11) and the vertical piece (11) Horizontal pieces (12) (13) extending in the same direction from both ends, and fixing notches (14) (15) formed from the tips of the horizontal pieces (12) (13) to the vertical pieces (11) Provided on one horizontal piece (13), cut and raised from the horizontal piece (13) toward the vertical piece (11), and when attached to the mounting bracket (1), its tip (16) is the mounting bracket. The engagement piece (17) that engages with the bent piece (4) of (1) and the tip of the horizontal piece (13) provided with the engagement piece (17) to the tip of the other horizontal piece (12) And a bent piece (18) bent toward the head.

  A gap (19) through which at least the horizontal mounting piece (3) of the mounting bracket (1) can pass is provided between the bent piece (18) and the other horizontal piece (12).

  The vertical piece (11) has a rectangular shape, and the height (H) of the inner piece is such that the bent piece (4) can be accommodated inside when installed as shown in FIGS. 3 (a) (b) and 6. Yes. In contrast, the height (h) of the bent piece (18) is slightly lower than that of the vertical piece (11), and the horizontal mounting piece (3) of the mounting bracket (1) between the upper horizontal piece (12). A gap (19) through which (or the bent piece (4)) can pass is provided. As shown in Fig. 3 (b), the nut (20) is housed in the drop-off prevention bracket (10), and the nut (20) is brought into contact with the lower surface of the horizontal mounting piece (3) of the mounting bracket (1). In such a case, the nut (20) will be high enough to be accommodated.

  One horizontal piece (12) located on the upper side has a rectangular shape, and a fixing cutout groove (14) is cut out from the tip toward the center. As shown in FIG. 5, the fixing notch groove (14) gradually decreases in width from the opening toward the back of the groove and is semicircular at the back of the groove.

  On the other hand, the lower horizontal piece (13) located on the lower side is also rectangular, slightly longer than the upper horizontal piece (12), and its tip is bent toward the tip of the horizontal piece (12). ing. This bent portion is a bent piece (18). Another fixing notch groove (15) is formed from the tip of the bent piece (18) toward the center of the horizontal piece (13). The notch grooves (14) and (15) for fixing may have the same shape as shown by a solid line in plan view in FIG. In that case, as shown in Fig. 2, the notch groove (15) for fixing the lower horizontal piece (13) is narrower than the nut (20), and the nut (20) is placed on the lower horizontal piece (13). Abut.

  On the contrary, as shown by the two-dot chain line in FIG. 5, the fixing notch groove (14) on the upper horizontal piece (12) side is narrower than the fixing notch groove (15) on the lower horizontal piece (13). The fixing notch groove (15) of the lower horizontal piece (13) may be made large enough to fit the nut (20). In that case, the nut (20) comes into contact with the lower surface of the upper horizontal piece (12) as shown in FIG.

  As can be seen from FIG. 3, the bent piece (18) is slightly lower than the vertical piece (11) and between the tip of the upper horizontal piece (12), the horizontal fitting piece (3) (or folded) of the mounting bracket (1) A gap (19) through which the curved piece (4) can pass is provided.

  The engaging piece (17) has L-shaped cut grooves (17a) formed on both sides of the lower horizontal piece (13), and is cut and raised toward the vertical piece (11). The distance (S2) between the cut and raised tip (16) and the upper horizontal piece (12) is smaller than the height (S1) of the bent piece (4). The narrower the distance (S2), the closer the tip (16) is to the horizontal mounting piece (3) of the mounting bracket (1), and in cooperation with the bent piece (18), the drop-off prevention bracket (10) Suppresses rattling. Further, a gap is provided between the tip (16) and the vertical piece (11) so that at least the bent piece (4) can be sufficiently fitted.

  Therefore, when attaching the air conditioning indoor unit (M) to the suspension bolt (6), hold the air conditioning indoor unit (M) at a predetermined height of the ceiling as shown in Fig. 1 and suspend it from the ceiling slab. Insert the bottom end of the suspended bolt (6) from the side into the mounting notch groove (5) provided in the horizontal mounting piece (3) of the bracket body (2) attached to the side of the air conditioning indoor unit (M) To do. Nuts (20) and (21) are screwed up and down at predetermined intervals on the suspension bolt (6), and the horizontal mounting piece (3) is inserted between the upper and lower nuts (20) and (21). . Of course, only the lower nut (20) may be used. Here, an example in which nuts (20) and (21) on both upper and lower sides are used is shown.

  In this state, set the drop-off prevention bracket (10) with respect to the horizontal mounting piece (3), then move it horizontally in the direction of the horizontal mounting piece (3) and install it horizontally in the gap (19) of the drop-off prevention bracket (10). Through the piece (3), when the mounting notch groove (5) and the fixing notch grooves (14) (15) coincide, the drop-off prevention fitting (10) is pushed in the direction of the air conditioning indoor unit (M). In accordance with this pushing, the engagement piece (17) contacts the tip of the bent piece (4) and bends in the direction of the horizontal piece (13), and after passing the bent piece (4), the engagement piece (17) It rises due to elasticity and engages with the bent piece (4). As a result, the fixing notch grooves (14) and (15) and the mounting notch groove (5) overlap to form an insertion space (6a) surrounding the suspension bolt (6).

  Then, tighten the nuts (20) and (21) on the top and bottom sides of the drop-off prevention bracket (10) mounted on the mounting bracket (1) as shown in Fig. 3 (or tighten only the lower nut (20)). The air conditioning indoor unit (M) is suspended at a predetermined height position on the ceiling.

  In this state, the above-mentioned earthquake was hit, the air conditioning indoor unit (M) was shaken greatly, and the suspension bolt (6) tried to move toward the opening side of the mounting groove (5) of the mounting bracket (1). In addition, the suspension bolt (6) abuts at least one of the fixing cutout grooves (14) and (15) of the drop-off prevention fitting (10) in the insertion space (6a) to attach the drop-off prevention fitting (10) to the mounting Attempt to move the notch groove (5) toward the opening side, but at this time, the engagement piece (17) contacts the bent piece (4) and the drop prevention fitting (10) further moves. Stop. As a result, it is possible to reliably prevent the suspension bolt (6) from falling off the mounting bracket (1).

  Next, as a modified example, when the fixing notch groove (15) is wider than the lower nut (20) as shown by a two-dot chain line in FIG. 5, the air conditioning indoor unit (M) is previously installed on the ceiling. Adjust to the specified height with the lower nut (20) and hang it on the suspension bolt (6) .In that state, place the drop-off prevention bracket (10) toward the horizontal mounting piece (3) as described above. When the mounting notch groove (5) and the fixing notch groove (14) (15) are aligned, the drop-off prevention fitting (10) is pushed into the air conditioning indoor unit (M) side when The drop-off prevention bracket (10) is attached to the mounting bracket (1). Thereafter, if the upper nut (21) is screwed into the suspension bolt (6), it is fastened and fixed. This is more preferable because the height setting of the air conditioning indoor unit (M) can be completed before the drop-off prevention fitting (10) is attached. In this case, in FIG. 3 (b), the nut (20) is housed in the drop-off prevention fitting (10). However, of course, the nut (20) is not limited to the lower fixing notch. The nut (20) may be sowed from the lower horizontal piece (13) so as to fit into the groove (15).

  Next, a second embodiment will be described with reference to FIGS. The description of the first embodiment is used in order to avoid complication of overlapping portions. In this case, as shown in FIG. 10, the bent piece (18) is not provided on the drop-off preventing metal fitting (10). Then, as shown in the above-described modification, the suspension bolt (6) is attached to the horizontal mounting piece (3) of the mounting bracket (1), and air-conditioning is performed at a predetermined height on the ceiling with at least the lower nut (20). Install indoor unit (M). In this case, since there is no bent piece (18), as shown in FIG. 8, the fixing cutout groove (14) (15) of the drop-off preventing metal fitting (10) and the mounting cutout groove (5) of the horizontal mounting piece (3) ) Is moved toward the air conditioner indoor unit (M), the engagement piece (17) is engaged with the bent piece (4) with one touch by the above-mentioned action. As a result, an insertion space (6a) surrounding the suspension bolt (6) is formed so as to overlap the fixing notch grooves (14) and (15) and the mounting notch groove (5), and the mounting is completed. Also in this case, the relationship between the upper and lower fixing groove (14) and (15) is that the same shape is cut or the lower fixing groove (15) is formed to be wider than the nut (20). Are the same.

  As a result, the drop-off prevention fitting (10) can be attached to the attachment fitting (1) with a single touch, and even if an earthquake occurs, the air-conditioning indoor unit (M) can be reliably prevented from falling into the room.

(M) ・ ・ ・ Air conditioning indoor unit
(1) ... Mounting bracket
(2) ... Metal body
(3) ・ ・ ・ Horizontal mounting piece
(4) ・ ・ ・ Folded piece
(5) ・ ・ ・ Notch groove for mounting
(6) ... Hanging bolt
(6a) ・ ・ Insertion space
(10) ... Fall prevention bracket
(11) ・ ・ ・ Vertical piece
(12) (13) ・ Horizontal piece
(14) (15) ・ Notch groove for fixing
(16) ... Tip of engagement piece
(17) ... Engagement piece
(18) ・ ・ ・ Bending piece

Claims (2)

It consists of a metal fitting body attached to the side surface of the air conditioning indoor unit, a horizontal mounting piece that is bent from the upper end of the metal fitting body and extends horizontally, and a bent piece obtained by bending the tip of the horizontal mounting piece. A drop-off prevention bracket for mounting on a mounting bracket for an air conditioning indoor unit in which a mounting bolt mounting notch groove is formed to reach the center of the mounting piece, and the hanging bolt is mounted in the mounting notch groove,
A vertical piece that closes the mounting notch when mounted on the mounting bracket;
A horizontal piece extending in the same direction from both ends of the vertical piece,
A fixing notch groove that is formed in accordance with the mounting notch groove from the tip of both horizontal pieces toward the vertical piece and overlaps with the mounting notch groove when mounted on a mounting bracket, and constitutes a space for inserting a suspension bolt. ,
An engaging piece provided on one horizontal piece, cut and raised from the horizontal piece toward the vertical piece, and its tip engages with the bent piece of the mounting bracket when mounted on the mounting bracket. A drop-off prevention bracket characterized by   A bent piece is formed from the tip of the horizontal piece provided with the engaging piece toward the tip of the other horizontal piece, and at least the horizontal attachment piece of the mounting bracket passes between the bent piece and the other horizontal piece. The drop-off prevention metal fitting according to claim 1, wherein a possible gap is provided.

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