JPH0519670Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention is used for adding or changing equipment such as electrical work in construction work outside buildings, factories, etc. In particular, cable racks, ducts, etc. The present invention relates to a hanger extension device for an existing hanging bolt suitable for adding a hanger for mounting a new cable rack or the like at an intermediate position of the existing hanging bolt that suspends the cable rack.

(Prior Art) Conventionally, in order to attach a cable rack, duct, etc., a hanger on which the cable rack, etc. is placed is installed between a pair of hanging bolts suspended from a ceiling slab or the like. At this time, a support device is used to erect the hanger on the hanging bolt. This support device mainly involves inserting a suspension bolt into a support fitting attached to the end of a hanger and fixing it with a nut screwed onto the suspension bolt in advance.

However, after attaching cable racks and cables to the hanger that has been erected using such a support device, when attempting to erect a new hanger or change the position of an existing hanger, first,
This required a great deal of effort, such as moving the existing hanger above the hanging bolt and then adding a new hanger below the existing hanger.

Therefore, as a support device that makes it possible to attach a new hanger above the existing hanger while keeping the existing hanger as it is, a hanger hanging device described in Publication No. 57-20937 has been proposed. , and Jikaisho, which was proposed earlier by the applicant.
A support device described in Japanese Patent No. 60-58983 is known.

On the other hand, there is a tube holder described in Japanese Utility Model Application Publication No. 54-43622 which fixes a rod-shaped tube to a gripping portion having a U-shaped cross section.

(Problems to be solved by the invention) However, these support devices had the following problems.

That is, in the former hanging device, the support fitting attached to the connecting part between the hanging bolt and the hanger can be attached from the side of the hanging bolt, so that the hanger can be added at an appropriate position on the side of the hanging bolt. This is what I did. However, even if the supporting metal fittings can be attached from the side of the hanging bolt, the means for fixing it to the hanging bolt is to use a nut that is pre-screwed to the hanging bolt.
Supporting metal fittings cannot be attached to hanging bolts that have not been fitted with nuts in advance, and as a result, there was a problem in that it was impossible to add hangers other than those planned before implementation.

In addition, this hanging device is a combination of three parts: a housing-shaped hanging fitting and two upper and lower holding fittings, so it is difficult to install, and many pieces are attached in succession like a hanger for cable wiring. As a matter of fact, it was inappropriate.

On the other hand, in order to solve the former problem, the support device previously proposed by the present applicant allows the support fitting to be fixed from the side of the hanging bolt.
In this support device, the hanging bolt is sandwiched between a retaining piece that extends along the side of the hanging bolt from a support fitting that is screwed to the hanger, and a substantially U-shaped support that is also attached to the side of the hanging bolt. These pressing pieces and the support are fastened together with two tightening screws. Therefore, like the former suspension device, the support device can be freely attached to the side surface of the suspension bolt even if the fixing nut is not attached to the suspension bolt in advance.

However, when tightening the pressure stopper and the planar substantially U-shaped support with two bolts, sufficient support strength for mounting the hanger cannot be obtained unless the clamping force of these bolts is increased considerably. For this purpose, it is necessary to equalize the tightening force of the two bolts that fix the support and to carefully and reliably tighten the bolts, which poses a problem in that this bolt tightening operation requires time and effort.

Furthermore, with this support device in which two metal fittings that sandwich the hanging bolt are tightened and fixed with a tightening screw, the position of the hanger can be adjusted by supporting the hanger with your fingers.
Two tightening screws had to be adjusted, making such fine adjustment of the hanger position extremely troublesome.

In addition, even though a tube holder with a structure in which a rod-shaped object is fixed to the holder has been proposed, a hanger is attached to the rod-shaped suspension bolt, and a cable rack, etc. is placed on this hanger. It was not a structure that could be used, and the structure was limited to simply fixing the tube.

Therefore, this idea was devised to solve the above-mentioned problems.It is easy to install, is ideal as a hanger for cable wiring that is installed in large numbers in succession, and the hanger has a strong supporting capacity. Furthermore, it is an object of the present invention to provide a hanger extension device for an existing hanging bolt, which allows fine adjustment of the mounting position to be easily performed.

(Means for Solving the Problems) In order to achieve the above-mentioned object, this invention provides a notch on the side surface of the nut to guide a prescribed male screw into the female screw, and a notch is provided at a position where the height of the nut is bisected. The two halves are rotatably connected at this dividing plane using a double nut with a notch.

Then, a predetermined plate body is bent to form a hanger support fitting having a substantially U-shape from the front side that fits over the end of the lip channel steel hanger, and extending from the side edge near the open end of the hanger support fitting in the direction of the bent part. A pair of planar hook-shaped notches are provided in the upper and lower plates of the hanger support fitting at rotational positions.

In addition to communicating the suspension bolt in this notch, a middle nut that engages from the inside with the lip of the end of the hanger that has been fitted inside, and a connecting bolt that is screwed to this middle nut are attached to the notch in the top plate. Use it as a means to solve problems.

(Function) According to this invention, by rotating the hanger support fitting from a state where the hanger bolt is interposed between the upper and lower plates of the hanger support fitting, the hanger support fitting is connected to the upper and lower plates of the hanger support fitting at the rotated position. A hanging bolt is communicated within the provided planar hook-shaped notch.

Furthermore, a middle nut and a connecting bolt that engage the lip part of the hanger from the inside are installed in the notch of the upper plate,
Screw the end of the hanger fitted inside the hanger support fitting.

A pair of notched double nuts, which are screwed onto the hanging bolts by inserting the hanging bolts into the female threads through the notches on the sides thereof, tighten and fix the hanger support fittings to the hanging bolts.

(Example) Hereinafter, an example of this invention will be described in detail with reference to the drawings.

Reference numeral 1 shown in the figure is a notched double nut 1 for fixing a hanger support fitting 2 to a hanging bolt Q, which will be described later. This notched double nut 1
is a pair of upper and lower double nuts having a notch 1E that can be attached from the side of the hanging bolt Q. In the illustrated example, the hexagonal nut itself is divided at a position that bisects the height thereof, and a male piece 1A is provided with an engaging protrusion 1B on the mutually adjoining end surfaces, and a female piece 1C is provided with a loose fitting groove 1D. A pair of nut pieces are formed, which are loosely fitted into the engagement protrusion 1B and the loose fitting groove 1D to prevent them from coming off, thereby rotatably connecting the male piece 1A and the female piece 1C. Yes (see Figure 5).

Reference numeral 2 denotes a hanger support fitting to be attached to the end of the hanger P. Similar to the notched double nut 1, this hanger support fitting 2 is also provided with a hanging bolt insertion opening 2E so that it can be attached from the side of the hanging bolt Q. There is. That is, this hanger support fitting 2 consists of an upper plate 2A, a side plate 2B, and a lower plate 2C, and is fitted onto the end of the lip channel steel hanger.

A notch 2 having a planar hook shape extending from the side edge near the open end of the hanger support fitting 2 in the bending direction.
A pair of bolts D are provided in the upper and lower plates 2A and 2C of the hanger support fitting at rotated positions, and the hanging bolt Q is communicated within this notch 2D, and is engaged from the inside with the lip portion P1 of the end of the hanger P that is fitted inside. The inner nut R and the connecting bolt S screwed to the inner nut R are attached to the notch 2D of the upper plate 2A. In the illustrated example, the inner nut R has a rectangular plate with both side edges bent to ensure engagement with the lip portion P1 of the hanger P. In addition, the shape of the inner nut R may be any suitable shape as long as it can be engaged with the lip portion P1 from the inside.

The notch 2D of the hanger support fitting 2 is arranged so that the end of the notch 2D located on the side of the bending part is inserted into the hanging bolt insertion part 2.
E, and a hanging bolt Q is communicated with this hanging bolt insertion portion 2E (see FIG. 2). and,
The bent portion of the notch 2D of the upper plate 2A is used as a connecting bolt insertion portion 2F, and a connecting bolt S to which the middle nut R is screwed is attached to the connecting bolt insertion portion 2F. At this time, the connecting bolt S is attached using a washer T, but the connecting bolt S is attached without using the washer T.
You may also use bolts with flanges.

Next, the hanger support fitting 2 is attached to the hanging bolt Q, and the hanger P is attached to the hanger support fitting 2 as shown in FIG.

That is, the upper and lower plates 2A of the hanger support fitting 2,
Position the hanging bolt Q along between 2B (see the same figure). Thereafter, the hanger support fitting 2 is rotated 90 degrees in a direction orthogonal to the longitudinal direction of the hanger P, and the suspension bolt Q is made to communicate within the pair of upper and lower notches 2D. (See the same figure). Furthermore, the hanger support fitting 2 is slid to position the hanging bolt Q in the hanging bolt insertion portion 2E. Then, attach the connecting bolt S with the inner nut R screwed on to the connecting bolt insertion part 2F, and fix the hanger P fitted inside the hanger support fitting 2 with the inner nut R and the connecting bolt S (see the same figure). .

In addition, the reference numeral 2G in the figure is a stopper that is formed protrudingly on the upper surface of the lower plate 2C to position the end of the hanger P, and the reference numeral 2H is a stopper that increases the strength of the upper plate 2A and the lower plate 2C, and is a hanger support metal fitting. This is a reinforcing piece that prevents the end of the hanger P fitted into the hanger P from shifting.

(Effects of the invention) This invention achieves its original purpose by being configured as described above.

That is, the hanger support fitting 2 is formed by bending a predetermined plate body to form a hanger support fitting 2 having a substantially U-shape from the front that fits over the end of the lip groove steel hanger P.
By providing a pair of planar hook-shaped notches 2D extending from the side edge near the open end toward the bent portion in the upper and lower plates 2A and 2C of the hanger support fitting at the rotation positions, the upper and lower plates of the hanger support fitting 2 are Hanging bolt Q between
By rotating the hanger support metal fitting 2 from the state through which the hanger support metal fitting 2 is inserted, the hanging bolt Q can be made to communicate within the pair of upper and lower notches 2D of the hanger support metal fitting 2. This makes it easy to attach the hanger support fitting 2 to the side part of the hanging bolt Q.

Furthermore, unlike conventional hanger hanging devices, there is no need to combine three members, and the installation performance is extremely high, making it ideal as a hanger for cable wiring that is installed in large numbers in succession.

Also, a middle nut R that engages from the inside with the lip portion P1 of the hanger P fitted inside the hanger support fitting 2
and the connecting bolt S that screws this inner nut R.
and are attached to the notches 2D of the upper plate 2A, the hanger support fitting 2 and the hanger P can be fixed by simply tightening the connecting bolts S. Moreover, since this connecting bolt S is attached to the notch 2D of the upper plate 2A, it can be attached to the notch 2D of the upper plate 2A even when the middle nut R is screwed to the tip of the connecting bolt S. In the device,
The work of connecting the hanger support fitting 2 and the hanger P is extremely simplified.

Furthermore, connect the specified male screw to the female screw 1 on the side of the nut.
Since a double nut 1 with a notch is used, in which a notch 1E is provided to guide the nut into F, the nut is divided at a position where the height of the nut is divided into two, and the two halves are rotatably connected at this dividing plane. This notched double nut 1 is also a suspension bolt Q.
Can be attached directly to the appropriate position on the side. Therefore, there is no need to screw the nut for fixing the support fitting to the hanging bolt Q in advance as in the conventional support device, and the hanger P can be added at any time. Also, compared to conventional support devices in which the support metal fittings can be fixed from the side of the hanging bolt, it is only necessary to adjust the pair of upper and lower notched double nuts 1.
Installation of the support device has become extremely easy.

Further, since the mounting position of the notched double nut 1 can be easily adjusted by rotating it along the hanging bolt Q, the mounting position of the hanger support fitting 2 can also be finely adjusted.

As described above, this invention has various practical effects such as easy installation, high support for the hanger, and easy fine adjustment of the installation position.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a front view of the main parts showing the state of use, Fig. 2 is an exploded perspective view, and Fig. 3 shows the installation order of the hanger support fitting and the connecting bolt. FIG. 4 is a side view taken along the line shown in FIG. 3, and FIG. 5 is a partially cutaway perspective view showing a double nut with a notch. P... Hanger, P1... Lip part, Q... Hanging bolt, R... Middle nut, S... Connection bolt,
T...Washer, 1...Double nut with notch, 1A
...Male piece, 1B...Engagement protrusion, 1C...Female piece, 1
D...Loose fitting groove, 1E...Notch, 1F...Female screw, 2...Hanger support fitting, 2A...Top plate, 2
B...Side plate, 2C...Lower plate, 2D...Notch, 2E
... Hanging bolt insertion part, 2F ... Connection bolt insertion part, 2G ... Stopper, 2H ... Reinforcement piece.

Claims (1)

[Scope of utility model registration request] A notch is provided on the side surface of the nut to guide a predetermined male screw into the female screw, and the nut is divided at a position where the height is bisected, and the two halves are rotatably connected at this dividing surface. This is a hanger extension device that can be screwed from the side of a hanging bolt with a double nut with a notch, and is a hanger support fitting that is approximately U-shaped from the front and is fitted onto the end of a lip grooved steel hanger by bending a specified plate. A pair of planar hook-shaped notches extending from the side edge near the open end of the hanger support fitting toward the bent portion are provided at the rotational position on the upper and lower plates of the hanger support fitting, and a hanging bolt is communicated within this notch. A hanger for an existing hanging bolt, characterized in that an inner nut that engages from the inside with a lip portion of the end of the hanger that is fitted inside, and a connecting bolt that is screwed to the inner nut are attached to a notch in the upper plate. Expansion equipment.