JPH0514779U - Flange corner piece for connecting duct - Google Patents

Abstract

(57) [Summary] [Structure] Adjacent two-sided flange pieces 2.2 attached to the duct 1 by superposing and fixing to adjacent two-sided flange pieces 2.2.
In the connecting flange corner piece a for connecting the duct corners with each other, a bolt insertion hole 4 is provided at a corner portion of the L-shaped substrate 3, and the flange piece 2
The held edge portions 6 and 6 for holding and holding are standingly provided on the held edge portions 5 and 5 formed on the outer edge of 2, and a large number of through holes 7 are aligned in the held edge portions 6 and 6. A flange corner piece for connecting a duct characterized by being installed. [Effect] When caulking and fixing, the caulking can be easily performed at the correct position without displacement, and after caulking, the through holes 7 arranged in parallel are caulked and deformed, and the holding edge portion 5
Since 5 is crimped to the held edges 6 and 6 in a deformed and bite state, positional deviation is strongly prevented, and a flange corner piece for connecting a duct having extremely strong fastening strength can be provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a flange for connecting a duct, which is formed by superposing and fixing flange pieces on two adjacent sides provided on a duct used for air conditioning, exhaust, etc., and connecting flange pieces on two adjacent sides at a corner of the duct. It is about corner pieces.

[0002]

[Prior Art]

 The connecting means of the duct is installed at the corners of the flange corners for connection, which is attached to the flanges provided on the ducts at the corners of the duct by superpositioning and attaching a flange piece for connection that is separate from the flange. The bolt is inserted into the bolt insertion hole and screwed.

Generally, the connecting flange corner pieces of the duct are mounted by overlapping the left and right overlapping portions of the connecting flange corner pieces of the duct with the adjacent two adjacent flange pieces, and standing up the outer edges of the left and right overlapping portions. The to-be-held edge portion is held by the holding edge portion formed on the outer edge of the flange piece and caulked and fixed.

[0004]

[Problems to be solved by the device]

 However, with such an attaching means, when the caulking is fixed, the connecting flange corner pieces are apt to be displaced, and it is very difficult to fix the caulking at the correct position.

Further, even after caulking and fastening, since the fastening strength is not sufficient, the connecting flange corner pieces may be displaced or come off due to deformation of the duct when the duct is assembled and connected. There was a problem to do.

The present invention solves such a drawback, and for connecting a duct, which can be caulked and fixed without being displaced, and after the caulking and fastening, the fastening strength is strong and the positional displacement is surely prevented. Providing flange corner pieces is a technical challenge.

[0007]

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

In the connection flange corner piece a, which is superposed on the two adjacent flange pieces 2.2 provided on the duct 1 to join the adjacent two flange pieces 2.2 at the duct corners. A bolt insertion hole 4 is provided at a corner of the L-shaped substrate 3, and the holding edge portions 5 and 5 formed on the outer edges of the flange pieces 2 and 2 on the outer edges of the left and right overlapping portions of the L-shaped substrate 3 hold and hold the bolts. A duct connecting flange corner piece characterized in that a held edge portion 6 to be put up is provided upright, and a large number of through holes 7 are provided in parallel to the held edge portion 6 to 6. It is related.

[0009]

[Action]

 The left and right overlapping portions of the L-shaped substrate 3 are overlapped with the flange pieces 2 and 2 on two adjacent sides provided in the duct 1, and the outer edges of the left and right overlapping portions are overlapped with the holding edge portions 5 and 5 of the outer edges of the flange pieces 2 and 2. Hold the to-be-held edges 6 formed on the.

At this time, since a large number of through holes 7 are arranged in parallel in the held edge portions 6 and 6, the through holes 7 are formed on the side surface of the held edge portions 6 and 6. The generated minute unevenness has a non-slip effect on the holding edges 5, 5, and the caulking fastening work can be performed without lateral displacement.

When the caulking is fixed, the plurality of juxtaposed through-holes 7 are caulked and deformed, and the held edge portions 6 and 6 are caulked in the deformed biting state to the holding edge portions 5 and 5 so that the position The gap will be strongly prevented.

[0012]

【Example】

 In the present embodiment, the metal L-shaped substrate 3 is bent to form the held edges 6, 6, and five through holes 7 are laterally punched in the held edges 6, 6. By forming the through hole 7, minute irregularities are formed on the side surface of the held edge portions 6 and 6, and these minute irregularities prevent the holding edge portions 5 and 5 from slipping. It is configured so as to effectively perform the temporary fixing action during the crimping work.

When the through hole 7 is caulked, the through hole 7 is crushed as shown in FIG. 2, and the holding edges 5 and 5 are deformed and bitten by the amount of the crushed portion, so that the product of the present invention is displaced. It is designed so that it can be firmly fixed and fixed without doing so.

Reference numeral 8 in the drawing is a correction hole into which a screwdriver or the like is inserted in order to correct the displacement of the temporarily fixed L-shaped substrate 3 at the time of caulking and fixing, and the opening shape is a cross shape. Then, it is possible to correct whether it is a minus driver or a plus driver.

Further, 9 is a contact square plate that abuts a corner of the duct 1, 10 is a contact side plate that abuts a side of the duct 1, and 11 is a reinforcing strip.

3 and 4 show a case in which the ducts 1 and 1 are connected by inserting bolts 12 into the bolt insertion holes 4 of the product of the present invention, which are caulked and fastened, and screwing and connecting the products of the present product. FIG. 3 shows the connecting portion, and FIG. 4 shows an exploded perspective view.

[0017]

[Effect of the device]

 Since the present invention is configured as described above, when caulking is fastened, the caulking can be easily performed at the correct position without misalignment. Since the holding edge is caulked in the deformed bite to the held edge, positional deviation is firmly prevented, and it is possible to provide a flange piece for connecting a duct with extremely strong fastening strength. Becomes

[Brief description of drawings]

FIG. 1 is a perspective view of the present embodiment.

FIG. 2 is a cross-sectional view of a main portion of the present embodiment in a caulking-fastened state.

FIG. 3 is a cross-sectional view of a main part in an assembled state showing an example of the duct connection of the present embodiment.

FIG. 4 is an assembled exploded perspective view showing an example of the duct connection of the present embodiment.

[Explanation of symbols]

 1 Duct 2 Flange Piece 3 L-Shaped Board 4 Bolt Insertion Hole 5 Holding Edge 6 Held Edge 7 Through Hole a Connection Flange Corner Piece

Claims (1)

[Scope of utility model registration request] 1. A connection flange corner piece, which is superposed on two adjacent flange pieces provided on a duct, and which connects the two adjacent flange pieces at a corner portion of a duct, at a corner portion of an L-shaped substrate. A bolt insertion hole is provided, and a held edge portion for holding and holding the holding edge portion formed on the outer edge of the flange piece is erected on the outer edge of the left and right overlapping portions of the L-shaped substrate. A flange corner piece for connecting a duct, characterized in that a large number of through holes are arranged in parallel in the section.