JP5517329B2 - Corrugated duct support frame and fixing method - Google Patents

Description

  The present invention relates to a support base for a corrugated cardboard duct installed for air conditioning, ventilation, or the like, and a duct fixing method using the same.

  In general, steel-made ducts are used for air-conditioning ducts installed in buildings such as stores, factories, and warehouses, and a supporting structure by suspension is described in Patent Document 1 below. However, in recent years, as described in the following Patent Documents 2 and 3, a cardboard made of light weight and excellent handleability may be used.

  In Patent Document 3 below, as shown in FIG. 8, as a corrugated cardboard duct D, in order to ensure incombustibility, an aluminum foil 52 is laminated on the corrugated cardboard 51, and the periphery is made of an incombustible adhesive tape 53 such as an aluminum tape. The sealed base material is bent into a rectangular tube shape.

  When the duct D is connected to form a pipe line, the ducts D are butted together and an incombustible adhesive tape 54 is wound around the outer periphery of the butted portion as shown in FIG. Furthermore, as shown in FIG. 10, the socket 55 may be wound around the outer periphery of the abutting portion to be reinforced.

  As shown in FIG. 11, a support structure is also disclosed in which a support base 56 is suspended from a ceiling of a building by suspension bolts 57 and a duct D is placed on the support base 56. This support structure is also employed in ordinary steel ducts.

Japanese Patent Laid-Open No. 4-186050 JP 2006-1095 A JP 2007-147185 A

  By the way, as described above, the ducts made of cardboard can be easily connected with an adhesive tape, but in order to prevent displacement of the abutting portion, it takes a lot of trouble to reinforce with a member such as a socket. There is.

  Also, when positioning the duct on the support frame, it is necessary to lift the duct carefully and move it little by little so that the aluminum foil on the duct surface is not damaged and the nonflammability is impaired. There is a problem.

  Therefore, an object of the present invention is to easily connect ducts so that they do not deviate from each other and to fix them in a positioned state.

To solve the above problems, the present invention is consecutively provided a side plate portion toward downward on both sides of the upper plate portion, the support cradle for supporting put the cardboard duct to the upper plate portion, said upper plate portion, switching put write, provided with a duct pressing piece to abut the side surface of the duct in a state of being erected proximal as a hinge, provided with a band insertion hole for inserting locking both ends of the band wound around the duct, the upper The plate portion is curved so that the upper surface is a concave surface that becomes lower at the center in the width direction .

  In addition, prepare a plurality of the support bases, erect the duct pressing pieces of each support base, suspend the support base from the building, or fix it to the ground so that the duct pressing pieces are aligned. Place the duct on the support base, bring the side of the duct into contact with the duct pressing piece of the support base, connect the ducts together, wind a band around the duct, and attach both ends of the band to the support base It was inserted and locked in the band insertion hole, and the duct was fixed to the support frame.

  When the support frame according to the present invention is used, it can be easily connected and positioned with an adhesive tape or the like so that the ducts do not deviate from each other by placing the ducts along the duct pressing pieces. Since it can be fixed to the support frame by banding, it is not necessary to adjust the position by sliding the duct with respect to the support frame, and it is possible to improve workability and prevent nonflammability from being damaged by the duct surface being damaged. be able to.

The perspective view which shows the state which the duct pressing piece of the support stand fell down The perspective view which shows the state which the duct pressing piece same as the above stood up Longitudinal side view showing an embodiment of the present invention in which the upper plate part is concave. The figure which shows the flat state of the band same as the above The perspective view which shows the duct connection state at the time of ground installation by a support stand same as the above Vertical side view of the duct The perspective view which shows the duct connection state at the time of suspension installation by the support stand same as the above Perspective view showing corrugated duct The perspective view which shows the connection state by the adhesive tape same as the above The perspective view which shows the reinforcement state by a socket same as the above Vertical side view showing the conventional suspended installation state

Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the figure which specifies embodiment of this invention is FIG. 3, and another figure is the schematic for description.

As shown in FIG. 1, the supporting base 1 of the cardboard made ducts, by bending along the length of the strip of constant width, the side plate portion 3 is directed downward from both sides of the upper plate portion 2, the side plates The collar part 4 is made into the shape which goes outside from the lower end of the part 3. FIG.

  A duct pressing piece 5 is provided at one end portion of the upper plate portion 2 by making a U-shaped cut, and both side base end portions of the duct pressing piece 5 are bound so as to be easily bent. A slit-like band insertion hole 6 extending in the width direction is provided on the outside of the duct pressing piece 5 and the other end of the upper plate portion 2. Round nail holes 7 are provided at both ends of the flange 4.

  Prior to the duct installation work, the support frame 1 has the duct pressing piece 5 erected with the base end as a hinge, as shown in FIG.

  In addition, as shown in FIG. 3, when the upper plate part 2 is curved so that the upper surface is concave, when the duct D is placed as described later, the peripheral edge of the hole forming the duct pressing piece 5 is Since it does not contact the duct D, it is possible to reliably prevent the surface of the duct D from being damaged by burrs on the periphery.

  As shown in FIG. 4, the band 21 for fixing the duct to the support base 1 is made of a steel strip having a constant width, and a bending cut 22 for inducing bending is provided at a position corresponding to the upper ridge portion of the duct. The insertion portion 23 is inserted into the band insertion hole 6 of the support frame 1 at both ends, and the insertion portion 23 is provided with notches that facilitate bending.

  When the duct D is installed on the ground such as a floor slab using the support platform 1 and the band 21 as described above, as shown in FIGS. 5 and 6, a plurality of support platforms 1 having the same shape are provided. The support bases 1 are fixed to the ground by arranging the duct pressing pieces 5 so as to be aligned in a straight line with one end as a reference, and driving the nail 11 into the ground with a nailing machine or the like through the nail hole 7. .

  Next, one duct D to be connected is placed on the support frame 1, the side surface of the duct D is brought into contact with the duct pressing piece 5, the band 21 is wound around the duct D, and the insertion portions 23 at both ends of the band 21. Is inserted into the band insertion hole 6 and bent on the back side of the upper plate portion 2 to be locked to the support frame 1, and this duct D is fixed to the support frame 1.

  Next, the other duct D is placed on the adjacent support frame 1, the ducts D are butted against each other with the side surfaces of the ducts D being in contact with the duct pressing pieces 5, and aluminum tape or the like is placed on the outer periphery of the butted portion. These non-flammable adhesive tapes 12 are wound to connect these ducts D together.

  At this time, while holding the duct D with one hand, the adhesive tape 12 can be applied to the outer periphery of the duct D with the other hand, so that the duct D does not move on the support frame 1 during the operation. Work can be done easily.

  Thereafter, the band 21 is wound around the other duct D, and both ends of the band 21 are locked to the support frame 1 in the same manner as described above, thereby fixing the duct D to the support frame 1. By repeating, the duct line to which the duct D is connected and fixed is formed.

  In order to reduce the work on the support base 1, the ducts D may be connected in advance and the duct D may be placed on the support base 1 in this state.

  Moreover, in the said embodiment, although the case where the ducts D were connected in the intermediate part of the adjacent support stand 1 was illustrated, on the upper surface of the support stand 1, the ducts D are abutted and the adhesive tape 12 is stuck and connected. You may make it do.

  On the other hand, as shown in FIG. 7, when installing the duct D by suspending it from the ceiling or the like of the building, the ground installation flange 4 is omitted as the support frame 1, and both end portions of the upper plate portion 2 are omitted. A plurality of ones having a shape in which the suspension holes 8 are provided are prepared.

  Then, in a state where these support frames 1 are suspended by the suspension bolts 13 inserted and locked in the suspension holes 8, the duct pressing pieces 5 are arranged so as to be aligned in a straight line with one end as a reference.

  Hereinafter, as in the case of the above-described ground installation, the duct D is placed on the support base 1, the side surface of the duct D is brought into contact with the duct pressing piece 5, the ducts D are connected with the adhesive tape 12, and the duct D is connected to the duct D. The band 21 is wound, both ends of the band 21 are inserted and locked in the band insertion holes 6, and the duct D is fixed to the support base 1.

  As described above, when the support frame 1 according to the present invention is used, the ducts D are not displaced from each other by placing the ducts D along the duct pressing pieces 5 in any installation form of ground installation or suspension installation. Thus, it can be easily connected and positioned with the adhesive tape 12 or the like.

  In this state, the band 21 can be hung and the duct D can be fixed to the support frame 1, so that it is not necessary to adjust the position by sliding the duct D with respect to the support frame 1, while improving workability. In addition, it is possible to prevent the aluminum foil laminated with the surface of the duct D from being scratched and to prevent nonflammability from being lowered.

DESCRIPTION OF SYMBOLS 1 Support base frame 2 Upper plate part 3 Side plate part 4 Gutter part 5 Duct pushing piece 6 Band insertion hole 7 Nail hole 8 Hang hole 11 Nail 12 Adhesive tape 13 Suspension bolt 21 Band 22 Folding cut 23 Insert part D Duct

Claims (4)

In the support frame (1), the side plate (3) directed downward is connected to both sides of the upper plate (2), and the upper plate (2) is supported by placing a cardboard duct (D) on the upper plate (2). The part (2) is provided with a duct pressing piece (5) for making a cut and making the side end of the duct (D) abut with the base end standing as a hinge and wound around the duct (D). A band insertion hole (6) for inserting and locking both ends of the band (21) is provided , and the upper plate part (2) is curved so that the upper surface is a concave surface that becomes lower at the center in the width direction. A support base for corrugated ducts.   Prepare a plurality of support bases (1) according to claim 1, erect the duct pressing pieces (5) of each support base (1), and turn the support base (1) into the duct pressing pieces (5). Place the duct (D) on the support base (1), bring the side of the duct (D) into contact with the duct pressing piece (5) of the support base (1), and place the duct (D) D) connect each other, wind a band (21) around the duct (D), insert and lock both ends of the band (21) into the band insertion hole (6) of the support base (1), and ) Is fixed to the support frame (1).   The corrugated cardboard duct fixing method according to claim 2, characterized in that the support frame (1) is suspended from a building.   The method for fixing a corrugated cardboard duct according to claim 2, wherein the support frame (1) is fixed to the ground.

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