JP2011156596A - Sound insulation cover for construction work, and spare part thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover which cuts noise generated by a construction tool during construction work, and to provide a spare part thereof. <P>SOLUTION: The sound insulation cover includes: a tube-shaped compression and expansion part having a width in the radial direction and a thickness in the longitudinal direction getting away from a working point; and a sound insulation cover part for insulating noise by covering a portion including a handling portion of the tool. The tube-shaped compression and expansion part is made of a compression and expansion material which flexibly expands and is compressed and therefore has a close fitness to a working object surface. The tube-shaped compression and expansion part further has sound insulation because of covering performance thanks to the close fitness and sound absorbability of the elastic material. The sound insulating cover part extends in the longitudinal direction of the tube-shaped compression and expansion part and includes a hand inserting portion with a sleeve through which a worker puts his hand. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sound insulation cover for covering a space including construction tools such as a chipping device, an electric cutter, and a grinder, and for insulating noise generated by the construction tool and exhaust sound such as compressed air, and a replacement part thereof. is there.

In the construction, a chipping device, an electric cutter, and a grinder are used, and the noise generated during the construction is very inconvenient. For example, in a chipping device, conventionally, chipping by hitting a chisel (chisel) is performed to crush a concrete surface or the like. At that time, two types of noise are generated around the chipping device. One is the noise when the compressed air is discharged, and the other is the noise caused by the hit between the chisel and the concrete surface. In Patent Document 1, the former is intended for sound insulation of noise when discharging compressed air,
The sound insulation tool according to the present invention is intended for sound insulation of both noises. Patent Document 2 discloses in the specification and drawings a casing 21 surrounded by a soundproofing member 39 extending to the tip of a chisel intended for noise insulation caused by impact with a concrete surface. The casing plate or layer is a concrete surface. Because it is not a so-called thick structure that spreads beside the concrete, it cannot cope with the sound insulation of the attenuation wave of the noise transmitted through the concrete surface and the concrete matrix, and the concrete in the intermediate state where the chipping is performed Since it cannot cope with the uneven surface on the chip surface, there is a disadvantage that noise escapes to the outside through the gap between the uneven surface and the sound insulation performance does not increase.
In addition, in the grinder, the sound of rubbing metal or concrete with a rotating grindstone is extremely annoying. Such noise is left without countermeasures.

JP-A-2005-279906 JP2008-272919

An object of the present invention is to overcome the above-mentioned problems. For example, in noise vibration caused by concrete hitting by a chisel of a chipping device, it is possible to cope with sound insulation between a concrete surface and a damping wave portion transmitted through a concrete base, and a concrete chipping surface. This is a sound insulation cover that can also be used for sound insulation of noise that escapes to the outside through the gaps between the concave and convex surfaces, and it can also cover the exhaust sound of compressed air. It is to provide a sound insulation cover and its replacement parts.

  The sound insulation cover for construction and its replacement parts according to the present invention include a tool housing for covering a power tool such as a chipping device, a cutter, and a grinder with a sound insulation cover, including the noise generating part and the power tool handling part. And the cover on the side on which the tool acts has a tubular compression / extension part having a width in the radial direction centered on the work point so that the cover is in close contact with the work surface, and is opposite to the work point Includes a handling part, an operator's arm and a sound-insulating arm insertion opening, and the cover is transparent in whole or in part so that the work point or the handling part can be seen through. It is characterized by being. This will be described below.

The invention described in claim 1 is a sound insulation cover for construction,
A tubular compression / expansion part having a thickness in the longitudinal direction away from the width and the point of action in the radial direction and a sound insulation cover part for insulating sound by covering a part including the handling part of the tool;
The tubular compression / expansion portion is made of a contraction / extension material that flexibly expands / contracts, thereby having an adhesion to a work surface, and having a sound insulation by a cover property by the adhesion and a sound absorption property by the contraction / extension material. The sound insulating cover portion includes a hand arm insertion portion that extends in a longitudinal direction of the tubular compression / expansion portion and has a sleeve for an operator to insert an arm for grasping the handling portion. To do.

The invention according to claim 2 is the construction sound insulation cover according to claim 1, wherein all or part of the tubular compression / expansion part or the sound insulation cover part has transparency to transmit visible light, or is transparent. It is characterized by having a window.

According to a third aspect of the present invention, in the construction sound insulating cover according to the first or second aspect, the sound insulating cover portion itself or the inner surface thereof is made of a contraction / extension material that flexibly expands and contracts. It is characterized by.

According to a fourth aspect of the present invention, in the construction sound insulation cover according to any one of the first to third aspects, the hand arm insertion portion is connected to the sleeve portion to prevent sound leakage, and It is characterized by having glove-like sealing means for sealing the inside and outside, or a close contact means for tightly contacting the hand and arm by having a shrinkable / extension material in which the sleeve portion flexibly expands and contracts.

According to a fifth aspect of the present invention, in the construction sound insulation cover according to any one of the first to fourth aspects, the tubular compression / expansion portion and the sound insulation cover portion are detachably connected by a connector. It is characterized by that.

According to a sixth aspect of the present invention, in the replacement part of the construction sound insulation cover according to any one of the first to fifth aspects, the tubular compression / expansion portion having the connection tool is provided.

Since it is comprised as mentioned above, in the sound insulation cover for construction and its replacement parts of this invention, since the whole of a chipping device, a power tool, etc. can be covered with a sound insulation cover, a noise can be interrupted | blocked.
Also, if the cover is worn out by work, it can be easily replaced.

It is a figure which shows one embodiment of the sound insulation cover for construction by this invention. It is a figure which shows attenuation | damping of the sound which propagates in concrete. It is a figure which shows the use condition of the sound insulation cover for construction by this invention. It is a figure which shows one embodiment of the components in which consumption replacement | exchange is possible with the sound insulation cover for construction which concerns on this invention.

A tubular compression / expansion portion that has a gap for accommodating the tool around the working point of the tool, has a width in the radial direction and a thickness in the longitudinal direction away from the working point, and is contracted and stretched flexibly with sound insulation. A sound insulating cover that extends in the longitudinal direction and covers the part including the handling part of the tool, and a hand arm insertion having an operator's arm inserted into the sound insulating cover and having an adhesive means or a sealing means for the arm or hand And all or a part of the tubular compression / expansion part and the sound insulating cover have transparency so that the working point or the handling part can be seen through. Hereinafter, description will be made using examples. Before entering the embodiment, how noise is transmitted will be described with reference to FIG.

FIG. 2 is a diagram showing the attenuation of sound propagating through the concrete, and the operation of the sound insulation cover for construction according to the present invention will be described using this.
First, in 2-A of FIG. 2, sound from the space above the concrete wall 201 (shown in cross section) (the sound is actually a dense wave (longitudinal wave), but is clearly shown as a transverse wave). ) Is incident on the concrete surface with amplitude VdB as the magnitude (intensity) of acoustic power, propagates through the concrete while being attenuated, and is radiated again as sound into the lower space with amplitude WdB.
Therefore, generally speaking, the sound insulation performance D value of concrete is DdB = VdB−WdB, and naturally this value increases as the thickness of the concrete wall increases. This is because the sound attenuates in the thickness direction of the concrete wall. By the way, from the “Building Sound Insulation Design Material” published by the Architectural Institute of Japan, the standard D value for the concrete wall thickness is 45 dB at 120 mm, 50 dB at 150 mm, and 55 dB at 200 mm.
This represents that the sound wave transmitted through the concrete attenuates by 55 dB when traveling through 200 mm, for example. Since the human ear has the property of being doubled when it becomes 10 dB larger, for example, at a distance of 200 mm from the sound source in the concrete, the sound is 55 dB, and is 1 / 5.5th power of 2 (1 / Sounds like 45).

In 2-B, the concrete floor (or wall) 202 is an example of a chipping device. When the chisel 203 strikes, a striking vibration is generated at the striking position portion 204 and propagates through the concrete floor (or wall) 202. . As with 2-A, the impact vibration 205 attenuates as the distance from the impact position portion 204 increases. The air at each position is shaken by the striking vibration 205 at each position, and a secondary (indirect) air vibration 206 corresponding to the power of the striking vibration 205 is generated to generate noise. Of course, the largest number is the direct sound generated when the chisel 203 hits the concrete floor (or wall) 202 at the hitting position 204. In order to remove these direct sound and indirect sound, the vibration of the concrete floor (or wall) 202 is covered with the cover part 207 made of a sound-absorbing material for a distance to obtain a desired sound insulation performance D value around the chisel 203, It is necessary that the vibration of the concrete floor (or wall) 202 is not transmitted to the air. For example, from the example of 2-A, for example, when the surface of a circle with a radius of 200 mm is covered, it is considered that the sound leaking through the concrete floor is attenuated by 55 dB.
What is important here is that when the concrete floor (or wall) 202 progresses, irregularities occur on the surface due to the tearing of the concrete. If sound leaks from the gap between this unevenness and the cover, the sound insulation performance by the cover will drop. Therefore, it is necessary for the cover to contract and stretch flexibly according to the unevenness, and to make the contact between the cover and the unevenness close. Further, the cover that contacts the uneven surface of the concrete needs to have a width in the radial direction centered on the chisel in order to obtain sound insulation performance. In the sound insulation, the position where the chisel fits is the center hole, the cover part made of a flexible sound absorbing material that contracts and expands is made into a donut shape with a width in the radial direction, and sound is heard on the upper part of the flexible chip surface cover part that contracts and expands There is an umbrella part that is closed so as not to leak, and sound is absorbed, and the umbrella part is fixed to the chipping device by a mounting tool, so that it is possible to shield the sound caused by the striking sound.
Here, an air mat, sponge, rubber, foamable rubber, foamable urethane, bellows-like rubber, or the like can be used as the flexible sound absorbing material that contracts and extends. The same applies to the generation of noise in construction tools other than the chiseling device. Moreover, it is necessary to cover the sound that directly vibrates the air such as the exhaust sound of the compressed air of the chipping device with a sound insulating cover.
Next, a specific embodiment will be described with reference to FIG.

FIG. 1 is a view showing an embodiment of a sound insulation cover for construction according to the present invention.
In 1-A, the construction sound insulation cover 100 has a gap 101 for accommodating the tool around the working point of the tool, and has a width 102 in the radial direction and a thickness 103 in the longitudinal direction away from the working point and is flexible. A tubular compression / expansion portion 104 that contracts and expands in a longitudinal direction, a sound insulation cover portion 105 that extends in the longitudinal direction of the tubular compression / extension portion 104 and covers a portion including a tool handling portion, and a sound insulation cover portion 105. And an arm insertion portion 107 having an arm or hand adhesion means or a sealing means 106, and all or part of the tubular compression / expansion portion 104 and the sound insulating cover portion 105 are transparent. Therefore, the working point or the handling part can be seen through.

Hereinafter, the tubular compression / expansion portion 104 can be made of an air mat, a sponge, a foamable rubber, a foamable synthetic resin (such as urethane), or a bellows-like rubber. For example, in the center of the tubular compression / expansion portion 104, the space 101 is a place where the working point of the tool is accommodated.
In this figure, the space | gap part 101 is formed in the column shape. Therefore, the tubular compression / expansion portion 104 has a disk-like shape (a donut shape) with a hole. The width 102 of the tubular compression / expansion portion 104 takes into consideration the sound insulation performance D value in FIG. 2 so as to satisfy the sound insulation performance in consideration of the damping property that the impact sound propagates through the concrete floor in the radial direction from the center of the hole. Done. For example, if the radius of the gap portion is 50 mm and the diameter to the outer end of the tubular compression / expansion portion 104 is 200 mm, the sound attenuation of 55 dB can be obtained from the example of FIG. It is possible to absorb a larger sound inside the end by the tubular compression / expansion part 104 and not leak it. The thickness of the tubular compression / expansion part 104 is determined by the sound insulation performance of the material of the sound insulation material constituting the tubular compression / extension part 104. For example, a sound insulation performance of 120 mm in thickness with urethane foam can obtain 32 dB attenuation and can reduce 100 dB noise to 68 dB. Furthermore, it is possible to make a composite such as sandwiching another sound insulation material, for example, a lead sheet 0.3 mm between two foamed urethane 60 mm. In addition, the space | gap part 101 may be extended and attached not only to the tubular compression / expansion part 104 but to the sound-insulating cover part 105. Further, the shape of the gap 101 is usually a circular columnar shape, but is not necessarily limited to a circular shape. In 1-A, the tubular compression / expansion portion 104, the gap portion 101, and the sound insulating cover portion 105 were all cylindrical. In addition, since the tubular compression / expansion part 104 is foaming, it is convenient that the blocking of the dust and the sound insulation are further improved by including water or other liquids.

The sound insulating cover 105 is tubular, and a tubular body is formed of a rigid body such as rubber, synthetic resin, metal, etc., and the tubular body itself or one stretched on the inner surface thereof is made of sponge, foaming rubber, foaming synthetic It is made of a material having sound insulation by sound absorption that relieves vibration of resin or the like.
Note that the tubular compression / expansion portion 104 and / or the sound insulating cover portion 105 is transparent or has a transparent window so that an action point of work such as a chisel can be seen during the work.
The sound insulating cover portion 105 includes a portion including a handling portion of the work tool. There is a hand / arm insertion part 107 for inserting the operator's arm and having a close contact means 106A or sealing means 106B for the arm or hand. Here, the hand / arm insertion part 107 has a glove attached as the sealing means 106B. An example is shown. Rubber gloves can be used as the gloves. Noise is blocked by rubber gloves and workers' arms.
When the operator presses the handling portion of the tool against the work surface, there is a tool coupler 108 for connecting the tool and the work sound insulation cover 100 so that the work sound insulation cover 100 itself moves according to the movement of the tool. Convenient. In this example, the hook-shaped tool coupler 108 to be hooked on the tool is shown. However, many couplers such as a belt and a patch lock can be used.

In 1-B, only the arm insertion portion 107 is different from 1-A. The hand arm insertion portion 107 is flexible so that it can be easily moved in a state where the arm is inserted and the handling portion of the work tool is held, and is configured in a sleeve shape of clothes. Covering the inner surface of the sleeve-shaped part with a stretchable material such as sponge, foaming rubber, foaming synthetic resin, etc., it adheres to the arm, and noise can be prevented from leaking between the arm and the sleeve-shaped part . In this example, the sleeve-shaped portion is on the outside of the sound insulating cover 105, but may be on the inside.

The examples of 1-A and 1-B are convenient for use in a chipping device, but 1-C is convenient for use in manual tools such as an electric grinder and an electric cutter.
The configuration is the same as 1-A and 1-B, but the shape is different because a manual tool is accommodated.
The tubular compression / expansion part 104 has a sound insulation cover part 105 attached in a bent state, not straight, and the sound insulation cover part 105 has a longitudinal shape so that the hand-arm insertion part 107 is in the arm insertion direction. I am in the direction. Since other explanation is the same, it is omitted.
In addition to the sound insulation, these sound insulation covers for construction also have an effect of suppressing scattered objects due to construction, and are also effective in preventing damage caused by the scattered objects.

FIG. 3 is a view showing a usage state of the sound insulation cover for construction according to the present invention. It is a figure which shows the state in which an operator performs the chiseling operation | work with the chiseling apparatus 301 which attached the sound insulation cover for construction which concerns on this invention. 3-A is a state where the sound insulation cover for construction of 1-A in FIG. 1 is attached, and the operator works in a state where the bend is slightly forward, so the foot does not hit the sound insulation. 3B shows a state in which the construction sound insulation cover 1-C in FIG. 1 is attached to the electric cutter 302, and the operator's arm 303 holds the handling unit 304. The arm and arm insertion portion 305 is covered with a stretchable material such as sponge, foam rubber, or foam synthetic resin on the inner surface of the sleeve-shaped portion, so that it adheres to the arm and prevents sound leakage.

FIG. 4 is a diagram showing an embodiment of a part that can be worn and replaced with the construction sound insulation cover according to the present invention. 4-A, the construction sound insulation cover includes a sound insulation cover portion 401 (illustration is omitted on the upper side) and a tubular compression / expansion portion 402, both of which show connecting tools 403A and 403B for connecting the two. Has been. Together, both can fix the screw in the screw hole of the connector. Since it is such a structure, when the tubular compression / extension part 402 is consumed by construction, it can be easily separated and replaced with a new one. In 4-A, the contact surfaces 404A, 404B of the sound insulating cover 401 and the tubular compression / extension portion 402 are flat, but in 4-B, there are uneven portions 405A, 405B that mesh with each other. 4-C shows a preferred snap lock used as a connection tool.
Since the tubular compression / expansion part 402 is a part that is consumed by construction, it can be a part that can be consumed and replaced by a construction sound insulation cover.

In all the embodiments of the sound insulation cover for construction according to the present invention, all or a part of the tubular compression / expansion part and the sound insulation cover part have transparency so that the work point or the handling part can be seen through. desirable.
In addition, in order to satisfy the sound insulation performance in FIG. 2, it is natural that a configuration in which a plurality of sound insulation material layers are stacked in addition to the thickness can be taken for all aspects of the present invention, as mentioned regarding the thickness of the sound insulation material.

  As described above, the work sound insulation cover and the replacement parts thereof according to the present invention cover the noise generated during construction by a tool such as a chipping device or an electric cutter so that the noise around the work is isolated. There is no need to worry, there is no need to worry about the health of the worker such as hearing loss, and the shattered material can be prevented from scattering and can be easily attached to the chipping device.

DESCRIPTION OF SYMBOLS 100 Sound insulation cover 101 for construction | working Space | gap 102 Width 103 Thickness 104, 402 Tubular compression-extension part 105, 401 Sound insulation cover part 106A Contact | adherence means 106B Sealing means 107 Hand arm insertion part 108 Tool coupling tool 201 Concrete wall 202 Concrete floor (or wall)
203 Chisel 204 Impact position portion 205 Impact vibration 206 Secondary (indirect) air vibration 207 Sound absorbing material covering portion 301 Deburring device 302 Electric cutter 303 Arm 304 Handling portion 305 Hand arm insertion portion 403A, 403B Connector 404A, 404B Contact surface 405A, 405B Concavity and convexity

Claims (6)

A tubular compression / expansion part having a thickness in the longitudinal direction away from the width and the point of action in the radial direction and a sound insulation cover part for insulating sound by covering a part including the handling part of the tool;
The tubular compression / expansion portion is made of a contraction / extension material that flexibly expands / contracts, thereby having an adhesion to a work surface, and having a sound insulation by a cover property by the adhesion and a sound absorption property by the contraction / extension material. The sound insulating cover portion includes a hand arm insertion portion that extends in a longitudinal direction of the tubular compression / expansion portion and has a sleeve for an operator to insert an arm for grasping the handling portion. Sound insulation cover for construction. 2. The work sound insulation cover according to claim 1, wherein all or part of the tubular compression / expansion part or the sound insulation cover part has transparency that allows visible light to pass through or has a transparent window. The sound insulation cover for construction according to claim 1 or 2, wherein the sound insulation cover part itself or the inner surface thereof is made of a contraction / extension material that flexibly expands and contracts. In order to prevent sound leakage, the hand-arm insertion portion is connected to the sleeve portion and has a glove-like sealing means for sealing the inside or outside of the hand-arm insertion portion, or a contraction / extension material on which the sleeve portion flexibly expands and contracts. The construction sound-insulating cover according to any one of claims 1 to 3, further comprising a close-contact means that is in close contact with a hand arm. The construction sound insulation cover according to any one of claims 1 to 4, wherein the tubular compression / expansion portion and the sound insulation cover portion are detachably connected by a connector. The replacement part for the sound insulation cover for construction according to any one of claims 1 to 5, comprising the tubular compression / expansion portion having the connection tool.

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