JPH056475Y2

JPH056475Y2 -

Info

Publication number: JPH056475Y2
Application number: JP16117488U
Authority: JP
Priority date: 1988-12-12
Filing date: 1988-12-12
Publication date: 1993-02-18
Anticipated expiration: 2003-02-18
Also published as: JPH0280282U

Description

【考案の詳細な説明】産業上の利用分野この考案は、角形のダクトを接続する場合に、
ダクトの端部から外側へ張り出されているフラン
ジの角部に重ね合わせて巻き締めされることによ
り、接続用のコーナーを形成するダクトのフラン
ジ用コーナーピースに関する。[Detailed description of the invention] Industrial field of application This invention is suitable for connecting rectangular ducts.
This invention relates to a corner piece for a flange of a duct, which forms a corner for connection by overlapping and tightening the corner of the flange extending outward from the end of the duct.

従来の技術この種のコーナーピースは、ダクトのフランジ
に重ね合わされるＬ形の主板部と、主板部の辺の
内側と外側に起立する内側縁部と外側縁部とを一
体に具え、内側縁部をダクトの端部外周に形成し
た掛止段部に閊えさせ、外側縁部を裏側から折り
返したフランジの巻締め部で巻き締めることによ
り、ダクトの端面に接続用のコーナーを形成する
ように用いられる。そして、ダクトのフランジと
コーナーピースとの結合をより強固にするため
に、上記外側縁部に、上向きに鋸歯形の凹凸を形
成し、これに巻締め部の頂部をかしめ付けるよう
にしたものが、例えば実開昭63−14088号公報に
ある。Prior Art This type of corner piece integrally includes an L-shaped main plate that overlaps the flange of the duct, and an inner edge and an outer edge that stand up on the inside and outside of the sides of the main plate. A corner for connection is formed on the end face of the duct by inserting the part into the hook step formed on the outer periphery of the end of the duct, and wrapping the outer edge with the tightening part of the flange folded back from the back side. used for. In order to strengthen the connection between the flange of the duct and the corner piece, an upwardly sawtooth-shaped unevenness is formed on the outer edge, and the top of the seaming part is caulked to this. , for example, in Japanese Utility Model Application No. 63-14088.

考案が解決しようとする課題上記従来のコーナーピースは、巻締め部のかし
めが不足したときに、コーナーピースの抜け止め
が不十分になる欠点があり、より確実に抜け止め
できる手段が求められていた。Problems to be Solved by the Invention The above-mentioned conventional corner pieces have the disadvantage that when the seaming part is not caulked enough, the corner pieces do not come off sufficiently, so there is a need for a more reliable means to prevent the corner pieces from coming off. Ta.

課題を解決するための手段そこで本考案は、角形のダクトのフランジの角
部に重ね合わされるＬ形の主板部と、主板部の辺
の内側と外側に起立する内側縁部と外側縁部とを
一体に具えたダクトのフランジ用コーナーピース
において、前記外側縁部に、該外側縁部の内側面
よりも内側に突出する掛止部を設けて、この掛止
部に、外側縁部を巻き締めする前記ダクトのフラ
ンジの巻締め片をかしめ付けするように構成して
なるダクトのフランジ用コーナーピースを提供す
るものである。Means for Solving the Problems Therefore, the present invention has an L-shaped main plate that overlaps the corner of the flange of a rectangular duct, and an inner edge and an outer edge that stand up on the inside and outside of the sides of the main plate. In the corner piece for a duct flange, the outer edge is provided with a catch part that protrudes inward from the inner surface of the outer edge, and the outer edge is wrapped around the catch part. The present invention provides a corner piece for a flange of a duct, which is configured to caulk a tightening piece of the flange of the duct to be tightened.

作用上記のように構成した本考案によれば、コーナ
ーピースの外側縁部の内側に突出する掛止部と、
Ｕ形に折り返えされたフランジの巻締め片とが結
合するので、仮りに巻締め片のかしめ付けが不足
する場合でも、該掛止部の突出により抜け止め作
用が維持される。Effects According to the present invention configured as described above, the hook portion protrudes inward from the outer edge of the corner piece;
Since the tightening piece of the flange folded back into a U shape is combined with the tightening piece, even if the tightening piece is insufficiently caulked, the protrusion of the hook portion maintains the retaining effect.

実施例以下に本考案の実施例を図面について説明す
る。Embodiments Examples of the present invention will be described below with reference to the drawings.

図において、ＡはＬ形の主板部１と、主板部１
の両辺の内側と外側とにそれぞれ垂直に起立する
内側縁部２と外側縁部３とを一体に具えたコーナ
ーピース、４は外側縁部３の内側面よりも内側に
突出するように外側縁部３に形成した掛止部であ
る。 In the figure, A indicates an L-shaped main plate part 1 and a main plate part 1.
A corner piece integrally includes an inner edge 2 and an outer edge 3 that stand vertically on the inner and outer sides of both sides, 4 is an outer edge that protrudes inward from the inner surface of the outer edge 3. This is a hook formed in part 3.

上記掛止部４は、第１図に示す実施例の場
合、主板部１の後端に切り込みを入れて外側縁部
３と共に主板部１から起立することにより、外側
縁部３とＬ形に連続する。また第２図に示す実施
例の場合は、外側縁部３の後端を主板部１上へ
向けて内側へ折り曲げることによつて形成したも
のである。さらに、第３図に示す実施例の場合
は、外側縁部３の中間に、内側面から主板部１上
に突出するようにした突部を複数個設けることに
よつて形成したものである。 In the case of the embodiment shown in FIG. 1, the hooking part 4 is formed into an L-shape with the outer edge 3 by cutting a notch in the rear end of the main plate 1 and standing up from the main plate 1 together with the outer edge 3. Continuous. In the embodiment shown in FIG. 2, the outer edge 3 is formed by bending the rear end of the outer edge 3 inward toward the main plate 1. Furthermore, in the case of the embodiment shown in FIG. 3, a plurality of protrusions are provided in the middle of the outer edge 3 so as to protrude onto the main plate part 1 from the inner surface.

上記のようにして、掛止部４を外側縁部３に具
えた本考案コーナーピースは、第４図に示すよう
に、通常のピースと同様に、角形のダクト５の端
部の四辺からそれぞれ外側へ張り出されているフ
ランジ６に主板部１の両辺を重ね、内側縁部２を
ダクト５の端部外周に形成した掛止段部７に閊え
させ、主板部１を上回つて外側に張り出すフラン
ジ６の巻締め部８を外側縁部３の裏側から折り返
してＵ字形に巻き締め、さらに、その巻締め部８
を、掛止部４の前後で内側からかしめ付けるよう
に用いる。 As shown in FIG. 4, the corner piece of the present invention, which has the hooking part 4 on the outer edge 3 as described above, can be inserted from each of the four sides of the end of the rectangular duct 5, as shown in FIG. Both sides of the main plate part 1 are overlapped with the flange 6 which is jutting out to the outside, and the inner edge part 2 is held in the hooking step part 7 formed on the outer periphery of the end of the duct 5, and the inner edge part 2 is placed over the outer periphery of the main plate part 1. The seaming part 8 of the flange 6 that overhangs is folded back from the back side of the outer edge 3 and wound in a U-shape, and then the seaming part 8 is
are used to caulk from the inside before and after the hooking part 4.

９は主板部１の角部に、Ｌ形に連続する外側縁
部３の内側に沿つて同じくＬ形に形成した凹部
で、この凹部９は、前記掛止部４を設けた外側縁
部３と共に主板部１の角部を補強するとともに、
コーナーの位置ぎめに有用である。 Reference numeral 9 denotes a concave portion formed in the same L-shape at the corner of the main plate portion 1 along the inside of the outer edge portion 3 that continues in an L-shape. Along with reinforcing the corners of the main plate portion 1,
Useful for corner positioning.

なお図中、１０はねじ孔、１１は締結用ボル
ト、１２はナツト、１３はゴムパツキンである。 In the figure, 10 is a screw hole, 11 is a fastening bolt, 12 is a nut, and 13 is a rubber gasket.

考案の効果以上のように、本考案は、コーナーピースの外
側縁部の内側面に突出する掛止部を設けて、この
掛止部と共に外側縁部に巻き締められたダクトの
フランジの巻締め部を上記掛止部の近傍でかしめ
付けて、コーナーピースをダクトのフランジに結
合するようにしたので、外側縁部の長さ方向に対
して上記掛止部が抜け止めの作用を十分に果たす
と共に、Ｕ字形に折り曲げられた巻締め部の内側
面にもかしめ付けによる剛性が生じて巻締め部を
開こうとする方向の強度が増し、より強固で確実
なダクトとの結合を得ることができる。また、加
工も容易で経済性に富む等の実用的効果がある。Effects of the Invention As described above, the present invention provides a hook portion that protrudes from the inner surface of the outer edge of the corner piece, and together with the hook portion, tightens the flange of the duct wrapped around the outer edge. Since the corner piece is crimped near the hooking portion to connect the corner piece to the flange of the duct, the hooking portion sufficiently acts to prevent the outer edge from coming off in the longitudinal direction. At the same time, the inner surface of the U-shaped seaming part is also stiffened by caulking, increasing the strength in the direction in which the seaming part is opened, making it possible to obtain a stronger and more reliable connection with the duct. can. Further, it has practical effects such as easy processing and economical efficiency.

[Brief explanation of the drawing]

図面は本考案の実施例を示すもので、第１図は
実施例の斜視図、第２図は実施例の斜視図、
第３図は実施例の斜視図、第４図はダクトとの
結合状態を示す一部切欠斜視図である。Ａ……コーナーピース、１……主板部、２……
内側縁部、３……外側縁部、４……掛止部、５…
…ダクト、６……フランジ、７……掛止段部、８
……巻締め部、９……凹部。 The drawings show an embodiment of the present invention, FIG. 1 is a perspective view of the embodiment, FIG. 2 is a perspective view of the embodiment,
FIG. 3 is a perspective view of the embodiment, and FIG. 4 is a partially cutaway perspective view showing a state of connection with a duct. A... Corner piece, 1... Main plate part, 2...
Inner edge, 3...Outer edge, 4...Latching part, 5...
...Duct, 6...Flange, 7...Latching step, 8
... Sealing part, 9... Concave part.

Claims

[Claims for Utility Model Registration] (1) An L-shaped main plate 1 that overlaps the corner of the flange 6 of a square duct, and an inner edge 2 and an outer edge that stand up on the inside and outside of the sides of the main plate 1. In the corner piece for a flange of a duct integrally provided with an edge 3, the outer edge 3 is provided with a
A hooking portion 4 is provided that projects inward from the inner surface of the duct, and a tightening piece 8 of the flange 6 of the duct, which tightens the outer edge 3, is caulked to the hooking portion 4. Corner piece for the flange of the duct. (2) The hooking part 4 is formed by cutting the rear end of the main plate part 1 and standing up on the main plate part 1 together with the rear end of the outer edge part 3. A corner piece for a flange of a duct according to claim 1 of the utility model registration claim. (3) Utility model registration claim 1, characterized in that the hook portion 4 is formed by bending the rear end of the outer edge portion 3 inward toward the main plate portion 1. Corner piece for the duct flange described in section. (4) The corner piece for a flange of a duct according to claim 1, wherein the hooking part 4 comprises a plurality of protrusions protruding from the inner surface of the outer edge 3. . (5) An L-shaped recess 9 is formed along the inside of the outer edge 3 at a corner of the main plate 1 where the outer edge 3 provided with the hook 4 continues in an L-shape. A corner piece for a flange of a duct according to claim 1 of the utility model registration claim.