JP2001298825A - Holder for correcting metal fitting for duct opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold opening correcting metal fittings fitted to a duct so as not to slip down and come off. SOLUTION: A sandwiching and holding portion 30 which sandwiches and holds the flange portion of a duct between, and receiving strips 40 which are formed projecting from the holding portion 30 to a side and receive the extended strip of the correcting metal fittings for an opening, are provided. The flange portion is inserted into the holding portion 30, and sandwiched and held by the holding portion 30. The extended strip of the correcting metal fittings for an opening is received by the receiving strip 40, and the correcting metal fittings for an opening are held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holder for holding a straightening metal fitting for correcting the width of a duct opening so as not to be displaced in a longitudinal direction or to fall off.

[0002]

2. Description of the Related Art In a factory, building, or other building, as shown in FIG. 8, a bottom plate 1 and two parallel bent right and left sides of the bottom plate 1 are provided as shown in FIG. A metal plate comprising a pair of side plates 2 and 2 and a pair of flange portions 3 and 3 bent at right angles inward from the ends of the side plates 2 and 2, and having an opening 4 between the pair of flange portions 3 and 3. Duct 5 is installed.

[0003] The flange portions 3 and 3 of the duct 5 are provided.
A screw hole (not shown) is provided along the line. After wiring of the electric cable, the cover is screwed in this screw hole so as to match the screw hole of the cover (not shown).

[0004] In recent years, with the increase in power demand, the diameter of power cables into factories and buildings has increased, and the size of ducts serving as passages has tended to increase due to the increase in the number of wirings. Due to the problem, since the duct 5 is made of a metal plate as thin as possible, the duct 5 is deformed by the influence of the heat of the plating when the galvanizing of the duct 5 is performed or by the weight of the wired electric cable or the like, so that the opening is formed. 4 is often widened or narrowed, and as a result, it may be difficult to fix the cover to the duct 5 with screws.

For this reason, the applicant of the present invention has conventionally used the opening correction metal fitting 10 shown in FIG. 8 to correct the opening width of the opening 4 during the construction of the duct 5 and restore the opening width to the normal opening width. 63-1519225).

That is, the opening correction metal fitting 10 is mounted on the substrate 1.
1a and bent plates 11b bent at right angles on both sides thereof,
11b, the length of which is slightly shorter than the regular opening width, the extension pieces 12, 12 extending from both ends of the substrate 11a of the body 11 with a small width, and the tips of the extension pieces 12, 12 And two end locking pieces 1 which are bent at right angles in the same direction as the bent plate 11b.
The distance between 3 and 13 is set slightly larger than the distance between the outer surfaces of both side plates 2 and 2.

Therefore, as shown in FIG. 9, both end plates 2 and 2 of the duct 5 are
When the width of the opening 4 of the duct 5 is narrower than the regular width, when the bent plates 11b and 11b of the main body 11 are fitted into the opening 4 of the duct 5, When both ends of the bent plates 11a, 11a are pushed outward so as to have a regular opening width between the two flange portions 3, 3, when the width of the opening portion 4 is wider than the regular width, the regular opening width is set. The two side plates 2, 2 of the duct 5 are pushed inward by the tip locking pieces 13, 13.

As described above, the opening correction metal fittings 10 are attached to a plurality of positions of the duct 5 so that the opening width is corrected to the normal width, and the cover is put on and the screws 3 are attached to the flanges 3, 3.

[0009]

However, in order to facilitate attachment to the opening 4, the opening correction metal fitting 10 is required.
Since the distance between the front end locking piece 13 and the end face 11b 'of the bent plate 11b is slightly larger than the width of the flange portion 3, the duct 5 is set up (up and down) as shown in FIG. In this case, even if the opening correction metal fitting 10 is once attached, the opening correction metal fitting 10 may be shifted down by its own weight or fall off. In addition, since the opening correction metal fitting 10 is attached to a plurality of places, when the opening correction metal fitting 10 is attached to a certain position, a force is applied to the side plates 2, 2 and the like, and the opening correction metal fitting 10 is deformed. In some cases it fell off. Therefore, not only is the work extremely complicated, but also extremely dangerous when working in a high place.

[0010] It is an object of the present invention to eliminate such inconvenience and to provide a holder for holding the opening correction metal fitting so as not to slip or fall off.

[0011]

In order to achieve the above object, a holding device of the present invention comprises a holding portion for holding the flange portion of an opening of a duct, and a projection protruding laterally from the holding portion. A receiving piece for receiving an extension piece of the part correction metal fitting, the flange part is inserted into the holding part, the flange part is held by the holding part, and the extension piece of the opening part correction metal fitting is held by the receiving piece. The opening correction metal fitting is held.

With this configuration, even when the duct is installed in the upright state, the holding portion is attached by holding the flange portion by the holding portion, and the extended portion of the opening correction metal fitting is received by the receiving portion from below. Thereby, it is possible to prevent the opening correction metal fitting from slipping down or falling off.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the holder of the present invention. As shown in FIG. 1, the holder 2 of the present invention
Numeral 0 is a metal plate, and a clamping portion 30 for clamping the flange portion 3 of the opening 4 of the duct 5, and a projecting side protruding from the clamping portion 30, and the extension piece 13 a of the opening correction metal fitting 10.
And a receiving piece 40 for receiving the same.

The holding portion 30 is formed by a curved portion 31
The two holding pieces 32, 32 are formed integrally with each other such that the gap is gradually reduced on the distal end side and is slightly smaller than the thickness of the flange 3 of the duct 5 at the distal end.

At the lower corners of the tips of the holding pieces 32, 32, bent-up portions 33 bent in directions away from each other so that the flange portion 3 of the duct 5 can be easily inserted between the two holding pieces 32. 33 are provided.

Further, the curved portions 3 of the holding pieces 32, 32 are so arranged that the held holding portion 30 is hardly displaced from the flange portion 3.
Diagonal cuts 34, 34 are provided on both sides of the one-side position, and triangular cuts 35, 3 formed by the cuts 34, 34 cut and raised in a direction approaching each other.
5 are provided.

A receiving piece 40 is integrally provided to project from the side of the tip of the holding piece 32 in a direction perpendicular thereto. Receiving piece 4
The receiving piece 40 is slightly larger than the thickness of the extension piece 13a of the opening correction metal fitting 10 at the base of the holding piece 32 on the side of the holding piece 32.
So that the stepped portion 4 is positioned outside the holding piece 32.
1 is provided.

A tapered portion 42 is provided at the tip of the receiving piece 40 so as to open outward so that the extension piece 13a of the opening correction metal fitting 10 can be easily inserted.

Next, a method of using the opening correction metal holder 20 will be described. First, as shown in FIG. 3, two holding pieces 32 of a holding portion 30 of the opening correction metal fitting holder 20 are provided on a pair of left and right flanges 3, 3 of the opening 4 of the duct 5 installed in a rising shape. 32 raised bending parts 33, 3
2, the two holding pieces 32, 32 are pushed in while being pushed and opened against the elastic restoring force around the curved portion 31, and the opening correction metal holder 20 is attached, as shown in FIG.

Next, as shown in FIG. 3, the opening correcting bracket 10 is attached to the opening 4 of the duct 5 on the upper side of the opening correcting bracket holders 20 and 20, and downward as shown in FIG. The extension pieces 12 and 12 of the opening correction metal fitting 10 are shifted and inserted between the flange 3 and the receiving piece 40 of the opening correction metal fitting holding tool 20 to be held. As a result, the opening correction metal fitting 10 is prevented from falling downward or falling off. As shown in FIG. 5, the lower side of the extension piece 12 of the opening correction metal fitting 10 is
If it is pushed in until it touches the upper side, the holding becomes more secure.

Conversely, after the opening correction fitting 10 is first attached to the opening 4, the opening correction fitting holders 20, 20 are attached to the flanges 3, 3 below the opening correction fitting 10 to hold the opening correction fitting. The tool 20, 20 is shifted upward and the receiving piece 4
The extension pieces 12, 12 may be held at 0, 40.

If the receiving pieces 40, 40 are provided on both of the two holding pieces 32, 32, respectively, as shown in FIG. 1, they can be mounted on the right and left flange portions 3, 3 by turning over the front and back surfaces. be able to.

The receiving piece 40 may be provided on only one of the two holding pieces 32 as shown in FIG. FIG. 6 is for mounting on the right side, and if it is provided on the other holding piece 32, it is for mounting on the left side. Note that, as shown in FIG. 7, if one holding piece 40 is provided on each side of one holding piece 32, the holding piece 32 can be attached to either of the right and left flange portions 3 by turning it upside down.

[0024]

As described above, the holding device of the present invention has a holding portion for holding the flange portion of the opening of the duct, a projecting side protruding from the holding portion, and an extension of the opening correction metal fitting. And a receiving piece for receiving the set piece, wherein the flange portion is inserted into the holding portion, the flange portion is held by the holding portion, and the receiving piece receives the extended piece of the opening correction metal fitting to correct the opening. The fittings are held.

With this arrangement, even when the duct is installed in the upright state, the holding portion is attached by holding the flange portion by the holding portion, and the extended portion of the opening correction metal fitting is received from below by the receiving portion. Thereby, it is possible to prevent the opening correction metal fitting from slipping down or falling off.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exemplary sectional view showing a state of use of the embodiment;

FIG. 3 is an explanatory diagram showing a use state of the embodiment.

FIG. 4 is an explanatory diagram showing a use state of the embodiment.

FIG. 5 is an explanatory diagram showing a use state of the embodiment.

FIG. 6 is a perspective view showing another embodiment of the present invention.

FIG. 7 is a perspective view showing another embodiment of the present invention.

FIG. 8 is a perspective view showing a use state of the opening correction metal fitting.

FIG. 9 is an explanatory view showing a use state of the opening correction metal fitting.

[Explanation of symbols]

 Reference Signs List 3 Flange part 4 Opening part 5 Duct 10 Opening correction metal fitting 12 Extension piece 13 Tip locking piece 20 Opening correction metal fitting holder 30 Nipping part 31 Curved part 32 Nipping piece 40 Receiving piece 41 Step bending part

Continued on the front page (72) Inventor Seiji Nose 1-3-3 Chuo, Edogawa-ku, Tokyo F-term in Brest Industrial Research Institute Co., Ltd. 5G357 BA10 BB04 BC06 DA06 DA10 DB01 DD02 DD06 DE10

Claims (1)

[Claims] An opening correcting bracket attached to an opening of a duct having a pair of flanges facing each other so as to extend between the pair of flanges so as not to shift in the longitudinal direction of the opening of the duct. A duct opening correction fitting holder for holding, comprising: a holding portion for holding the flange portion, and a receiving piece projecting laterally from the holding portion and receiving an extended piece of the opening correction tool. Wherein the flange portion is inserted into the holding portion, the flange portion is held by the holding portion, and the receiving piece receives the extended piece of the opening correction metal fitting to hold the opening correction metal fitting. A duct opening correction fitting holder.