JP3091851U - Duct flange connection clip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip for extremely well and stably connecting a flange at an opposite end of a duct. SOLUTION: A band-shaped metal top plate 11, a holding plate 12 connected to one side edge of the top plate and bent in a letter shape on the back side of the top plate, and a second side edge of the top plate. A leg plate 13 connected to and protruding substantially toward the center between both side edges of the back surface of the top plate, and a pressurizing action unit 14 connected to the leg plate and bent in a K-shape toward the holding plate side.
With the clip for connecting the duct flange consisting of the following, the projecting edge of the pressurizing section is strongly pressed against the flange.

Description

[Detailed description of the invention]       [0001]     [Technical field to which the invention belongs]   The present invention relates to a duct flange connection clip.       [0002]     [Prior art and its problems]   FIG. 4 shows a conventional technique for connecting flanges provided at opposite edges of a duct. As shown, flanges 2, 2 projecting outward from opposite edges of ducts 1, 1, respectively. To match.       [0003]   Next, a clip 3 as a connection fitting is attached to the outside of the butted flanges 2 and 2. Fitting while hitting with a hammer, the butting of both flanges 2, 2 maintain.       [0004]   The above-mentioned clip 3 is connected to a metal band-shaped top plate 5 from one side edge of the top plate 5. And the holding plate 6 facing the inside of the back surface of the top plate 5 and the top plate 5, a leg plate 7 which is inclined in the direction of the backside and in the direction of the holding plate 6; A bent portion 8 whose length is bent in a direction opposite to the holding plate 6, that is, in a surface direction of the leg plate 7; It is composed of       [0005]   Then, hold the protruding piece 2 ′ of one of the flanges 2, 2 The insertion plate 6 is fitted and engaged, and the top plate 5 is beaten by a hammer.       [0006]   The fitting of the clip 3 to the flanges 2 and 2 by the tapping is completed. And the projecting piece 2 ′ of the other flange 2 is connected by the connecting portion between the top plate 5 and the leg plate 7. As the user embraces and holds the projecting piece 2 ′ with the embracing plate 6, The protruding pieces 2 'and 2' are drawn.       [0007]   On the other hand, when the clip 3 is fitted, the bent portion 8 circumscribes the flange 2 and The pressing force acting on the leg plate 7 prevents the clip 3 from coming off the flanges 2, 2. become.       [0008]   According to such a clip 3, the surface of the leg plate 7 is bent by the U-shaped bend on the leg plate 7. A bent portion 8 projecting from the flange 2 is provided. Press of the bent part against the flange does not work effectively, and the flanges separate from each other. When a force in the direction acts, the clip rotates in a direction in which the clip comes off.       [0009]   Therefore, in this invention, the pressure contact of the edge of the leg plate in the protruding direction against the flange works effectively. To make it happen.       [0010]     [Means for Solving the Problems]   In order to solve the above-mentioned problem, the present invention is based on a belt-shaped metal top plate, An embracing plate provided in a bent shape on the back side of the top plate in a row from one side edge , Continuing from the other side edge of the top plate and projecting substantially toward the center between both side edges of the back surface of the top plate. And a leg plate that extends from the leg plate to the holding plate Adopts a duct flange connection clip consisting of a curved pressurized action section .       [0011]     [Embodiment of the invention]   An embodiment of the present invention will be described with reference to the accompanying drawings.       [0012]   The connection clip A of the duct flange of the embodiment of the present invention is as shown in FIG. , A strip-shaped metal top plate 11 and a back side of the top plate 11 An enclosing plate 12 that is provided in a curved shape on the surface side and is connected from the other side edge of the top plate 11. On the back surface of the top plate 11 and toward a substantially central portion between both side edges of the top plate 11. The leg plate 13 provided, and a letter-shaped shape extending from the leg plate 13 toward the embrace plate 12 side. And a pressurizing action portion 14 bent to the right.       [0013]   As shown in the figure, the top plate 11 is bent in a chevron shape to allow the leg plate 13 to escape outward. I try to avoid force.       [0014]   As shown in FIG. 2, the clip A includes an upstream duct 21 and a downstream duct 22. The flanges 23 provided at the ends facing each other are abutted.       [0015]   Next, one side flange of the flanges 23, 23 overlapped with the butting. The holding plate 12 is fitted to the projecting piece 23 ′ of 23 so as to be engaged.       [0016]   Thereafter, the top plate 11 is hit with a hammer, and as shown in FIG. Embrace the projecting piece 23 ′ of the flange 23 on the other side at the coupled bending portion with the leg plate 13 At the same time, the flanges 23 ', 23' Packing 24 between 23 is pressed.       [0017]   On the other hand, the pressing operation of the leg plate 13 due to the above-described pinching pressure (at the end of the fitting of the clip A). Since the use portion 14 (projecting edge) circumscribes the flange 23, the flange 2 3. Even if the pressing force acts effectively on 3 and the force in the direction of release acts on clip A, A while maintaining stable fitting of A, and flanges 23, 23 of ducts 21, 22 Connection while maintaining a strong clamping force between the flanges 23 and 23 do.       [0018]     [Effect of the invention]   As described above, by using the clip of the present invention, the clip can be It is possible to maintain a stable fitting state of the cap and connect the flange well.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a clip of the present invention. FIG. 2 is a perspective view showing connection of a flange using the same clip. FIG. 3 is an enlarged longitudinal sectional front view showing a main part of the same. FIG. 4 is an enlarged longitudinal sectional front view of a conventional example. [Description of References] A clip 11 top plate 12 holding plate 13 leg plate 14 pressurizing section

Claims (1)

[Claim 1] A belt-shaped metal top plate, and a holding plate bent from the one side edge of the top plate so as to be bent in the shape of a letter on the back side of the top plate; A leg plate connected to the other side edge of the top plate and provided so as to protrude substantially toward the center between both back side edges of the top plate; and A clip for connecting a duct flange consisting of a pressurizing section.