JPH1183141A - Vibration-proof joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-proof joint which does not generate end scrap by easily executing at a duct of various size. SOLUTION: In the vibration-proof joint comprising a plurality of units each having plate-like elements 22 adhered to upper and lower surfaces of an elastic material of a rectangular section, and a mounting bolt 23 fixed to outer surfaces of the elements 22 in such a manner that the plurality of the units are coupled in a shape coincident with an end face of a duct of a rectangular section to be fixed to the duct by the bolt 23, the plurality of the units each has side units C, E disposed at sides of the duct end, and a unit A for a corner disposed at a corner of the duct end, and a recess 24 and a protrusion 25 to be engaged with one another are provided at both coupling faces of each of the units. In this case, the adjacent units are coupled therebetween by engaging the protrusions 24 with the recesses 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration joint used as an anti-vibration measure for a duct for air conditioning of a building structure.

[0002]

2. Description of the Related Art Generally, when a duct for air conditioning or the like is installed in a building structure, a joint made of an anti-vibration rubber is installed at a penetration portion of the wall to prevent transmission of vibration generated from the duct to the wall. Hereinafter, this is referred to as an anti-vibration joint.).

FIG. 5 shows an example in which a duct having a rectangular cross section is formed through the wall using such a vibration-proof joint. The joints 3 and 4 are fixed, and the ducts 5 and 6 are fixed via the vibration isolating joints 3 and 4. And the vibration isolating joints 3, 4
Is a long elastic body 7 having a rectangular cross section as shown in FIG. 6, for example.
Metal plates 8 are fixed to both side surfaces of each of the metal plates 8, and a plurality of mounting bolts 9, 9
It is formed of a long anti-vibration rubber 10 in which... Are implanted. That is, such a long anti-vibration rubber 10 is cut on site in accordance with the size of the ducts 5 and 6 to obtain blocks 11a, 11b... Of a required length. The ducts 5 and 6 are appropriately combined and arranged so as to correspond to the shapes of the flanges of the ducts 5 and 6, and are fixed to the ducts 2, 5 and 6 by mounting bolts 9.

In FIG. 5, reference numeral 12 denotes a duct 5,
6 is a sound absorbing material such as glass wool filled into the buried duct 2 and the inner surfaces of the ducts 5 and 6 in order to absorb the vibration noise of 6.

[0005]

However, in such vibration-proof joints 3 and 4, since the long vibration-proof rubber 10 must be cut on site according to the size of the duct, the construction is complicated. In addition, there is a problem that a tool for cutting is required. In addition, if the cutting accuracy is low, there is a possibility that a gap may be formed between the blocks 11a and 11b of the adjacent vibration-isolating rubber, or it may be difficult to attach the blocks to the ducts 2, 5, and 6. In addition, there is also a problem that scrap materials that waste resources are generated.

The present invention has been made in view of such a point, and provides a vibration-proof joint which can be easily applied to ducts of various sizes and does not generate any scrap. The purpose is to do.

[0007]

According to the first aspect of the present invention, there is provided a vibration isolating joint connected to an end of a duct having a rectangular cross section, wherein upper and lower surfaces of an elastic body having a rectangular cross section are provided with plates. A plurality of units each formed by bonding the bodies and fixing the mounting bolts to the outer surfaces of these plate-shaped bodies are connected in a shape matching the end face of the duct, and are fixed to the duct by the mounting bolts. In the vibration damping joint configured as described above, the plurality of units include a side unit disposed along a side of the duct end, and a corner unit disposed at a corner of the duct end. Further, a concave portion and a convex portion that can be fitted to each other are provided on both connecting surfaces of each unit, and adjacent units are connected by fitting these concave portions and the convex portions. Toshii .

According to a second aspect of the present invention, in the vibration damping joint, a packing portion protruding outward from an outer surface of the plate is provided on one side surface of the unit.

According to a third aspect of the present invention, in the anti-vibration joint, the concave and convex portions provided on the connecting surface of the unit have a shape that can be fitted only in the width direction or the thickness direction of the elastic body. It is characterized by having.

In the vibration isolating joint according to the first aspect, at the time of construction, the unit for the side portion and the unit for the corner portion are appropriately combined and connected at the site according to the size of the duct, and these are connected to the duct by mounting bolts. It is only necessary to fix it, the work is easy and there is no need for a cutting work as in the conventional case. Therefore, there is no need to bring a cutting tool to the site, and there is no problem in construction due to poor cutting. Further, generation of scraps is also prevented.

In the vibration isolating joint according to the second aspect, since the sealing performance of the joint surface with the duct is improved by the packing portion, it is not necessary to interpose a sealing material such as a packing material or a caulking material on the mounting surface. Workability is further improved.

In the vibration damping joint according to the third aspect, the work of connecting the units is easy, and the work does not easily come off after the connection, so that the workability is improved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a top view showing examples of various units used in the vibration-proof joint of the present invention. A is an example of a unit for a corner portion arranged at a corner portion of a duct end, and B to B.
E is an example of a side unit arranged along the side of the end of the duct. FIG. 2 is a perspective view showing a state where the side unit B is connected to the corner unit A shown in FIG. 1 and an exploded view thereof.

As shown in these figures, the corner unit A is a plate-like body made of a hard material such as metal on the upper and lower surfaces of an L-shaped elastic body 21 having a rectangular cross section made of rubber or the like. 22 and 22 are adhered to each other,
2 has a structure in which mounting bolts 23 are fixed to the outer surface. The fixing position of the mounting bolt 23 is a position where two center lines in the width direction of the plate-like body 22 intersect. The concave portion 24 and the convex portion 2 that can be fitted to each other are provided on both end surfaces serving as connecting surfaces.
5 is provided, and a bulged portion 25a having an arc-shaped cross section is formed at the tip end side of the convex portion 25 in order to prevent pull-out.

The side unit B is formed by bonding plate-like members 22 made of a hard material such as metal to the upper and lower surfaces of an I-shaped elastic member 21 having a rectangular cross section made of rubber or the like. The mounting bolts 2 are mounted on the outer surfaces of
3 and 23 are fixed. The fixing position of the mounting bolt 23 is a position where the center line in the width direction and the center line in the length direction of the plate-like body 22 intersect. In addition, concave portions 24 and convex portions 25 that can be fitted to each other are provided on both end surfaces serving as connecting surfaces, similarly to the corner unit A.

Further, the side units C to E are different from the side unit B only in length or length and the number of the mounting bolts 23, and when the length of the side unit B is l, The side unit C is twice as long as 2l, and the side units D and E are 3 times and 4 times as long as 3l and 4l, respectively. The mounting bolts 23 of the side units D and E are
From the center of each plate-shaped body 22 toward both end faces, they are provided at positions separated by a distance from the mounting bolt 23 of the side unit C to the end face.

Further, each of these units A to
One side of E (inner side in the corner unit A)
A packing part 26 is formed integrally with the elastic body. The packing portion 26 extends outward from the outer surface of the plate 22.

FIG. 3 shows an example of the anti-vibration joint of the present invention using such various units. Among the various units described above, the shape of the end of the duct having a rectangular cross section to be connected, It comprises four corner units A, two side units C, and two side units E selected according to the size.

That is, four corner units A
Are the four corners of the rectangle, the side unit C constitutes the upper side and the lower side, the side unit E constitutes the left and right sides, respectively, and the packing parts 26 of each unit are all inside. Position each unit A, C, E
The concave portion 24 and the convex portion 25 are fitted and connected.

The anti-vibration joint assembled in a rectangular shape as described above has a duct 5 having a through-wall portion as shown in FIG.
(6) Install the mounting bolts 23
Fixed through.

That is, as shown in FIG. 4, each mounting bolt 23 of the vibration-proof joint is connected to a bolt insertion hole provided in the inner flange 13 at the end of the buried duct 2 and to the duct 5.
(6) The anti-vibration joint is fixed to the buried duct 2 and the duct 5 (6) by being inserted into a bolt insertion hole provided in the outer flange portion 14 at the end and tightening the nut 27. Each unit is provided with a packing portion 26, and when the nut 27 is tightened, the packing portion 26 is deformed to seal between the anti-vibration joint and the duct 5 (6) or the buried duct 2; In addition, the airtightness at the vibration-proof joint mounting portion can be maintained without interposing a packing material or a caulking material required conventionally.

As described above, according to the above-mentioned anti-vibration coupling, it is possible to easily assemble it into a shape conforming to the end face of the duct and fix it to the duct at the site. Can be improved, and the occurrence of poor construction and offcuts can be prevented. In addition, there is an advantage that the step of inserting a packing material or a caulking material can be omitted by the packing portion 26.

When installing the anti-vibration joints, instead of assembling the units into a rectangular shape as described above and attaching them, each unit may be individually connected to a duct or a buried duct while being fixed. Good.

Further, the side unit and the corner unit constituting the vibration isolating joint of the present invention are not particularly limited to the above example, but at least the side unit is the same as the above example. As shown, the length having an integral multiple of the basic unit length, that is, 1 time, 2 times, 3 times... Is preferable because it can be easily applied to various ducts having different sizes. Also, the concave portion 24 and the convex portion 25
From the viewpoint of ease of fitting and stability of the connection state, it is desirable that the elastic body has a shape that can be fitted at least only in the width direction or the thickness direction of the elastic body, and in particular, can be fitted only in the thickness direction. It is more desirable that the shape be used. Furthermore, the packing part 26 may be provided so as to be located outside the vibration isolating joint, or may be connected.

[0026]

As described above, according to the anti-vibration joint of the present invention, the unit for the side and the unit for the corner, which have been manufactured in advance in a factory or the like, are connected together at the site and fixed only to the duct. This eliminates the need for cutting at the site as in the prior art, simplifies construction, eliminates the risk of inconvenience due to poor cutting, and also prevents the generation of offcuts.

In particular, when a packing portion protruding outward from the outer surface of the plate is provided on one side surface of the unit, it is not necessary to interpose a sealing material such as a packing material or a caulking material on the mounting surface. Thus, workability can be further improved.

When the concave and convex portions provided on the connecting surface of the units are formed so as to be fittable only in the width direction or the thickness direction of the elastic body, the connecting operation between the units is easy, and In addition, since it does not easily come off after the connection, the workability can be further improved.

[Brief description of the drawings]

FIG. 1 is a top view showing an example of various units used in a vibration-proof joint of the present invention.

2A is a perspective view showing a connection example of the units shown in FIG. 1, and FIG. 2B is an exploded perspective view thereof.

FIG. 3 is a top view showing an example of the vibration-proof joint of the present invention.

FIG. 4 is a sectional view showing a state of attachment to the duct.

FIG. 5 is a cross-sectional view showing an example of a wall penetrating portion of a duct using a conventional anti-vibration joint.

FIG. 6 is a perspective view showing an example of a long anti-vibration rubber constituting a conventional anti-vibration joint.

FIG. 7 is a perspective view showing an example of assembling a conventional anti-vibration joint to an end of a duct.

[Explanation of symbols]

 2 Buried ducts 5, 6 Ducts A Corner units B to E Side units 21 Elastic bodies 22 Plates 23 Mounting bolts 24 concave part 25 convex part 26 packing part 27 nut

Claims (3)

[Claims] An anti-vibration joint connected to an end of a duct having a rectangular cross section, wherein a plate is adhered to an upper surface and a lower surface of an elastic body having a rectangular cross section, and is attached to an outer surface of the plate. A plurality of units to which the mounting bolts are fixed are connected in a shape conforming to the end surface of the duct, and the vibration isolating joint is configured to be fixed to the duct by the mounting bolts. A side unit disposed along the side of the duct end, and a corner unit disposed at a corner of the duct end, and
A concave portion and a convex portion that can be fitted to each other are provided on both connection surfaces of each unit, and the adjacent units are connected by fitting the concave portion and the convex portion. Vibration coupling. 2. A vibration isolating joint according to claim 1, wherein a packing portion protruding outward from an outer surface of said plate is provided on one side surface of said unit. 3. The vibration isolating joint according to claim 1, wherein the concave portion and the convex portion provided on the connecting surface of the unit have a shape that can be fitted only in a width direction or a thickness direction of the elastic body. A vibration-proof joint.