JP2012127438A - Suspension type vibration control implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspension type vibration control implement satisfying requirement of miniaturizing and weight reduction of the vibration control implement and preventing contact of a vibration control member and a vibration control implement body to each other to surely exert a vibration control effect even when the position of an insert and the position where vibrating equipment is installed are shifted to each other.SOLUTION: In the suspension type vibration control implement including the vibration control implement body (hanger box 2) interposed in the middle of a hanging bolt (between an upper hanging bolt B1 and a lower hanging bolt B2) hanging down the vibrating equipment (air conditioner AC) that generates vibration and supporting the load of the vibrating equipment, the vibration control member (taper coil spring 3 or taper rubber spring 3') disposed between the upper side part and the lower side part of the vibration control implement body and absorbing vibration of the vibrating equipment, and two upper and lower elastic members (rubber cap 4 and rubber boot 5) interposed between the vibration control member and the vibration control implement body and between the vibration control member and the hanging bolt, and preventing propagation of vibration of the vibrating equipment, the external shape of the vibration control member is a circular truncated cone shape.

Description

  The present invention relates to a suspension-type vibration isolator that is interposed in a suspension bolt that suspends vibration devices such as air-conditioning devices, water supply / drain pipes, air supply / exhaust ducts, and the like, and prevents propagation of vibrations of vibration devices. Specifically, the present invention relates to a technique for preventing the vibration-proofing effect from being hindered by the contact between the vibration-proofing material of the suspension-type vibration-proofing device and the vibration-proofing device main body.

  In buildings such as buildings, air conditioning equipment, water supply / drainage pipes, air supply / exhaust ducts and piping, etc., are suspended from structural housings such as floor slabs and roof supports on upper floors by suspension bolts. In addition, such air conditioning equipment, water supply / drainage pipes, air supply / exhaust ducts and piping, etc., fluid such as water or air flows or stops suddenly by the power of the compressor, etc., or the drive motor rotates or stops. It has become a source of vibrations. Hereinafter, such an apparatus that generates vibration including an air conditioner, a water supply / drain pipe, a supply / exhaust duct or pipe, and the like is referred to as a vibration apparatus.

  The vibration generated from such a vibration device has a problem in that it propagates through a suspension bolt and propagates to a structural frame such as a floor slab, causing a failure due to vibration and vibration noise over the entire building. In particular, when vertical vibrations propagate to the floor slab on the upper floor, furniture such as office desks and cabinets resonates and rings, or malfunctions of OA equipment, etc., causing various vibration disturbances. There was a problem.

  In order to solve such a problem, Patent Document 1 discloses a ceiling-suspended vibration isolator that is interposed between a ceiling-side suspension bolt 20 and a facility-side suspension bolt 21 and suspends a ceiling arrangement facility. A U-shaped suspension comprising a support 11, a suspension part 12 to which a ceiling-side suspension bolt 20 is attached, and a load bearing part 13 for suspension support of a ceiling arrangement facility in which a through hole 13c is formed. Mounted on the load body 13, the compression coil spring 14 for load application installed between the suspension part 12 and the load carrying part 13, and the load carrying part 13, and the equipment-side suspension bolt 21 is inserted. Mounted on the lower elastic seat 15 provided with the mounting cylinder 18 and the compression coil spring 14, the locking end of the equipment-side suspension bolt 21 is inserted with an inner diameter smaller than the inner diameter of the mounting cylinder 18. An upper elastic seat 30 provided with an upper through hole 32 and the upper elastic seat 3. Even if the equipment-side suspension bolt 21 is installed so as to be inclined with respect to the vertical direction, it is provided with a washer 33 on which the locking end of the equipment-side suspension bolt 21 is attached. A suspended suspension type vibration isolator A is disclosed in which the shaft portion of the equipment-side suspension bolt 21 can be installed at a large inclination angle θ without contacting the mounting cylinder portion 18 in the cylinder portion 18 for installation. (See, for example, FIG. 1 of Patent Document 1).

  However, in the ceiling suspension type vibration isolator A described in Patent Document 1, contact between the equipment-side suspension bolt 21 and the suspension body 10 can be prevented, but the compression coil spring 14 that is a vibration isolation material and the vibration body main body. In order to prevent contact with the hanger body 10, the cantilever distance of the load carrying part 13, which is disadvantageous in bending moment, must be increased to take a distance between the hanger body 10 and the compression coil spring 14. (1) There is a problem that it is contrary to the demands for reducing the size and weight of the vibration isolator in a narrow ceiling space.

  In addition, when turning the nut that secures the compression coil spring 14 to the equipment-side suspension bolt 21, the compression coil spring 14 is located below the nut. There was also a problem that it took time to install the vibration isolator because it had to be tightened.

  In addition, when the installation-side suspension bolt 21 is installed obliquely, the compression coil spring 14 also moves up and down while being inclined, so that (3) the expansion / contraction displacement direction of the compression coil spring 14 and the vertical vertical direction deviate from each other. Therefore, harmful vertical vibrations cannot be damped efficiently, and the effect of vibration absorption is reduced.

JP 2010-223368 A

  Therefore, the present invention solves the above-mentioned conventional problems, satisfies the demand for downsizing and weight reduction of vibration isolator, and even if the position of the insert and the position where the vibration device is installed are misaligned. An object of the present invention is to provide a suspended vibration isolator capable of preventing the contact between the material and the vibration isolator main body and reliably exhibit the vibration isolating effect.

  In order to solve the above-mentioned problem, the invention according to claim 1 has an upper side portion and a lower side portion, and is interposed in the middle of a suspension bolt that suspends a vibration device that generates vibrations to load the vibration device. A vibration isolator body to be supported; a vibration isolator disposed between an upper side portion and a lower side portion of the vibration isolator main body to absorb vibrations of the vibration device; the vibration isolator and the vibration isolator main body; And an elastic material interposed between the vibration isolator and the suspension bolt, and a suspension type vibration isolator for preventing propagation of vibration of the vibration device, The anti-vibration material is characterized in that its outer shape is a truncated cone shape.

  According to a second aspect of the present invention, in the suspended vibration isolator according to the first aspect, the vibration isolator body includes a hollow rectangular frame having the upper and lower sides and a pair of left and right side portions. It consists of a body.

  According to a third aspect of the present invention, in the suspended vibration isolator according to the first or second aspect, the coil diameter of the vibration isolator decreases as the distance from the upper or lower side of the vibration isolator body increases. It is a coil spring that goes on.

  According to a fourth aspect of the present invention, in the hanging vibration isolator according to the third aspect, one or both of the two elastic members have a bag shape that covers all or a part of the coil spring. It is characterized by.

  According to a fifth aspect of the present invention, in the hanging vibration isolator according to the fourth aspect, the two elastic members are attached to an upper side portion of the vibration isolator main body and cover an upper portion of the coil spring. A rubber cap that restrains a horizontal shift and a rubber boot that is attached to the lower end of the vibration isolator and covers the entire outside of the vibration isolator.

  According to a sixth aspect of the present invention, in the suspended vibration isolator according to any one of the first to fifth aspects, the vibration isolator is attached to an upper side of the vibration isolator main body, and the vibration isolator A hole having a size that allows insertion of a socket portion of an electric power tool for tightening the nut for securing the vibration isolator is formed in a lower side portion of the instrument main body, and the vibration device and the vibration isolator main body are provided in the hole. A hanging bolt to be connected is inserted and fixed to the vibration isolator body.

  According to a seventh aspect of the present invention, in the suspended vibration isolator according to the sixth aspect, the upper side portion of the vibration isolator main body and the right part below the insert that is embedded in a structural housing and screwed onto the suspension bolt. An anti-vibration member is attached.

  This invention is as described above. According to the invention described in claim 1, the invention has an upper side portion and a lower side portion, and is interposed in the middle of a suspension bolt that suspends a vibration device that generates vibration. A vibration isolator body that supports the load of the vibration device, a vibration isolating material that is disposed between the upper side portion and the lower side portion of the vibration isolator body, and absorbs vibrations of the vibration device, A suspension type vibration isolator comprising: an upper and lower elastic member interposed between the vibration isolator body and between the vibration isolator and the suspension bolt, and preventing propagation of vibration of the vibration device In addition, since the outer shape of the vibration isolator has a truncated cone shape, it satisfies the demand for downsizing and weight reduction of the vibration isolator, and the position of the insert and the position where the vibration device is installed are misaligned. Even if it is, prevent the contact between the anti-vibration material and the anti-vibration tool body to ensure the anti-vibration effect It can be.

  According to the invention described in claim 2, in the suspended vibration isolator according to claim 1, the vibration isolator main body has a hollow rectangular shape having the upper and lower sides and a pair of left and right sides. In addition to the above-mentioned effects, the vibration isolator body has a cantilevered support portion as compared to the U-shape in horizontal view as described in Patent Document 1. The corners that are bent and welded over time are plastically deformed, and there is little risk of deformation such that the upper and lower sides open to the side. The durability of the swinging tool is improved. Moreover, the thickness of the vibration isolator main body can be reduced correspondingly, and the weight can be reduced.

  According to a third aspect of the present invention, in the suspended vibration isolator according to the first or second aspect, the vibration isolating material has a coil diameter that increases as the distance from the upper side or the lower side of the vibration isolator body increases. Since the coil spring is getting smaller, in addition to the above-mentioned effects, the effect of damping the vertical vibration is higher than that of solid anti-vibration material made of rubber, etc. Can be prevented. For this reason, the vertical vibration of the vibration device is not amplified by a member that is relatively thin and easily vibrates up and down, such as a floor slab and a free access floor, and the vibration disturbance can be surely reduced.

  According to a fourth aspect of the present invention, in the suspended vibration isolator according to the third aspect, one or both of the two elastic members have a bag shape that covers all or a part of the coil spring. In addition to the above-mentioned effects, there is no risk of injury to workers by accidentally pinching hands or tools between coil springs when installing a coil spring and tightening a nut. Thus, the safety of the installation work is improved. In addition, even if the position where the insert is buried and the position where the vibration device is installed are far away from each other, and the vibration isolator must be installed with the hanging bolt extremely inclined, the coil spring must be Since it is covered with an elastic material, the vibration isolator body and the coil spring do not directly contact each other, and the vibration transmitted from the vibration isolator body to the suspension bolt via the coil spring is reduced by the elastic material, thereby inhibiting the vibration isolation effect. Can be minimized.

  According to a fifth aspect of the present invention, in the suspended vibration isolator according to the fourth aspect, the two elastic members are mounted on the upper side portion of the vibration isolator body, and the upper portion of the coil spring is disposed on the upper side of the coil spring. A rubber cap that covers and restrains the horizontal displacement, and a rubber boot that is attached to the lower end of the vibration isolator and covers the entire outside of the vibration isolator, so the rubber cap restrains the horizontal displacement of the coil spring. Moreover, the said effect can be exhibited by covering the whole outer side of a coil spring with a rubber boot.

  According to the invention described in claim 6, in the suspended vibration isolator according to any one of claims 1 to 5, the vibration isolator is attached to an upper side portion side of the vibration isolator main body, A hole having a size capable of inserting a socket portion of an electric tool for tightening the nut for fixing the vibration isolator is formed in a lower side portion of the vibration isolator main body. The vibration device and the vibration isolator main body are formed in the hole. In addition to the above-described effects, the nut for securing the vibration isolator to the upper suspension bolt is also used as the vibration device. Both nuts that fasten to the lower suspension bolts to be connected can be tightened using a power tool. Therefore, the problem (2) described in the background art can be solved, the installation work of the suspension type vibration isolator can be saved, and the installation cost can be reduced. In addition, since the hole provided in the lower side is large, the degree of freedom of the installation angle with the vertical surface of the suspension bolt that connects the vibration device is increased, and even if the position of the insert and the installation position of the vibration device are separated, the suspension type An anti-vibration tool can be easily installed to exhibit an anti-vibration effect.

  According to the seventh aspect of the present invention, in the suspended vibration isolator according to the sixth aspect, the upper side portion of the vibration isolator main body is directly below the insert that is embedded in the structural housing and screwed onto the suspension bolt. Since the vibration isolating member is attached, in addition to the above-described effects, at least the suspension bolt screwed to the insert and the vibration isolating material fastened to the suspension bolt can be installed substantially vertically. Therefore, the problem (3) described in the background art can be solved, and the anti-vibration effect can be surely exhibited.

It is explanatory drawing which shows the use condition of the suspension type | formula vibration isolator of this invention. It is a front view which shows the suspension type vibration isolator which concerns on embodiment of this invention. It is sectional drawing which shows the state which cut | disconnected the suspension type vibration isolator same as the above by the vertical plane which passes along the center. It is a front view which shows the vibration isolator main body which concerns on embodiment. It is a front view which shows the vibration isolator which concerns on Example 1. FIG. 6 is a perspective view showing a vibration isolator according to Embodiment 2. FIG. It is a front view which shows the rubber cap which is an upper elastic material which concerns on embodiment. It is a front view which shows the rubber boot which is a lower elastic material which concerns on embodiment. It is explanatory drawing which shows the attachment state of a suspension type vibration isolator when the installation position of an insert and a vibration apparatus has shifted | deviated. It is explanatory drawing which shows the attachment procedure 1 of the suspension type vibration isolator which concerns on embodiment. It is explanatory drawing which shows the attachment procedure 2 of the suspension type | formula vibration isolator which concerns on embodiment. It is explanatory drawing which shows the attachment procedure 3 of the suspension type | formula vibration isolator which concerns on embodiment. It is another example of FIG. 1 which shows the state which suspended piping using the suspension type | formula vibration isolator which concerns on embodiment.

  Embodiments of a suspended vibration isolator according to the present invention will be described below with reference to the drawings.

<Embodiment>
The suspended vibration isolator according to the embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an explanatory diagram showing a use state (attachment state) of a suspended vibration isolator according to an embodiment of the present invention. In FIG. 1, AC is an air conditioner exemplified as an embodiment of a vibration device that generates vibration, and 1 is an anti-vibration hanger exemplified as an embodiment of the suspended vibration isolator of the present invention. As shown in FIG. 1, the air conditioner AC is supported by being suspended from a concrete slab CS on the upper floor, which is a structural frame, with suspension bolts (upper suspension bolt B1, lower suspension bolt B2). The bolt is configured to be supported by the concrete slab CS by screwing to a ceiling insert TI installed in advance at a predetermined interval (generally 900 mm pitch) on the deck plate DP before placing concrete. .

  The anti-vibration hanger 1 is interposed in the middle of the suspension bolt, that is, between the upper suspension bolt B1 and the lower suspension bolt B2, and elastically supports the air conditioner AC, its piping, and the like via an anti-vibration material described later. Thus, it has a function as a suspension type vibration isolator that mainly absorbs the vertical vibration component of vibrations generated from the air conditioner AC and prevents propagation to the concrete slab CS. In addition, since it is common to use a full screw bolt with a nominal diameter of 10 as the suspension bolt, the illustrated form illustrates a full screw bolt with a nominal diameter of 10 for both the upper suspension bolt B1 and the lower suspension bolt B2. Yes. Of course, it is needless to say that other standard bolts such as 3/8 and 1/2 volts are also applicable.

  FIG. 2 is a front view showing the anti-vibration hanger, and FIG. 3 is a cross-sectional view showing a state where the anti-vibration hanger is cut along a vertical plane passing through the center thereof. As shown in FIGS. 2 and 3, a vibration isolator hanger 1 that is a suspended vibration isolator according to an embodiment of the present invention is a vibration isolator body that supports the load of an air conditioner AC (see FIG. 1). A hanger box 2, a taper coil spring 3 that is attached to the hanger box 2 and absorbs vibrations of the air conditioner AC, and a taper coil spring 3 that is interposed between the taper coil spring 3 and the hanger box 2. 1 is mainly composed of a rubber cap 4 that is an elastic material, and a rubber boot 5 that is a second elastic material interposed between the taper coil spring 3 and the suspension bolt B2.

(Anti-vibration body)
FIG. 4 is a component diagram of the vibration isolator hanger 1 showing the hanger box 2 which is an embodiment of the vibration isolator main body. As shown in FIGS. 4 and 3, the hanger box 2 is made of a general structural rolled steel (SS400) and has a hollow rectangular shape (front surface) having an upper side portion 21 and a lower side portion 22 and a pair of left and right side portions 23 and 24. And a box that is bent into a back-opened box shape), supports the load of the air conditioner AC (see FIG. 1), and separates the suspension bolt into the upper suspension bolt B1 and the lower suspension bolt B2. This is to allow the air conditioner AC to be elastically supported by interposing an anti-vibration material (to be described later). In addition, since the entire frame is long and small, the anti-vibration hanger 1 can be installed even in a narrow space.

  In addition, an upper suspension bolt B1 (a full screw bolt or a hexagonal push bolt having a nominal diameter of 10) is loosely fitted to the upper side portion 21 of the hanger box 2 so that a rubber cap (to be described later) can be fitted on the inside (illustrated) An upper hole 21a having a diameter φ = 25 mm is formed in the form, and a predetermined diameter (see FIG. 10) through which a socket portion (see FIG. 10) of an electric tool for tightening a nut screwed with the upper suspension bolt B1 can be inserted into the lower side portion 22. A pilot hole 22a is formed with a diameter φ = 25 mm in the illustrated embodiment.

  Here, since the through-hole (especially the lower hole 22a) provided in the hanger box 2 is larger than the suspension bolt to be loosely inserted, the installation position of the ceiling insert TI and the installation position of the air conditioner AC are as shown in FIG. Even if it is shifted, it becomes possible to install the air conditioner AC using the anti-vibration hanger 1 by installing the lower suspension bolt B2 diagonally, and the degree of freedom of installation increases, as will be described later. Since the nut can be tightened with the electric tool, the installation time of the anti-vibration hanger and the air conditioner can be greatly reduced as compared with the case where the nut is manually tightened.

  In addition, although the thing processed from the general structural rolled steel (SS400) was illustrated as the hanger box 2, it is not restricted to such steel things, The load (for example, air conditioner) applied to one suspension bolt When the AC is supported by four-point suspension, the material is not particularly limited as long as the allowable tensile strength is sufficient to support a quarter load of the air conditioner AC.

(Anti-vibration material)
FIG. 5 is a front view of the taper coil spring 3 that is a vibration-proof material according to the first embodiment. The form which concerns on Example 1 of a vibration isolator is a coil spring which consists of a hard steel wire for springs, and as shown in FIG. 5, as the coil diameter of the coil spring leaves | separates from the upper side part 21 of the hanger box 2, that is, The taper coil spring 3 is formed so as to gradually decrease as it goes downward (inscribed in the truncated cone).
The spring constant of the taper coil spring 3 is set to a range that does not resonate with the frequency around 20 Hz generated by the air conditioner AC (for example, 14 Hz or less, preferably about 3 to 6 Hz).

As shown in FIG. 3, the taper coil spring 3 is attached to an upper suspension bolt B1 that is mounted below the upper side portion 21 of the hanger box 2 via a rubber cap 4 described later and inserted into the upper hole 21a. Vibrations transmitted from the air conditioner AC (see FIG. 1) via the lower suspension bolt B2 and the hanger box 2 secured to the lower suspension bolt B2. Is absorbed so that it is not transmitted to the upper suspension bolt B1. Further, as shown in the figure, the nut to be fastened is a double nut so as not to loosen over time due to vibration or the like.
The upper suspension bolt B1 may be a hexagonal push bolt instead of a double nut.

  FIG. 6 is a perspective view illustrating a tapered rubber spring 3 ′ that is a vibration-proof material according to the second embodiment. The form according to Example 2 of the vibration isolator is an elastic resin (rubber material) such as ethylene propylene diene copolymer rubber (EPDM resin), and its outer shape is the upper side portion 21 of the hanger box 2 as shown in FIG. The taper rubber spring 3 ′ is formed in a truncated cone shape that decreases in diameter as it goes away from the head, that is, as it goes downward. Since the mounting position and the mounting method are the same as those in the first embodiment, description thereof is omitted.

  As described above, according to the vibration isolator according to the first and second embodiments, the outer shape of the anti-vibration material has a truncated cone shape that gradually decreases in diameter as it goes downward. The installation position of the air conditioner AC is misaligned, and even if the hanging hanger box 2 is tilted slightly and the anti-vibration hanger 1 is attached with the hanger box 2 tilted slightly, There is little possibility that the taper coil spring 3 and the taper rubber spring 3 ′ which are the vibration isolating materials come into contact with each other, and the anti-vibration effect can be surely exhibited.

  The material of the vibration isolating material is not limited to the exemplified hard steel wire for spring or elastic resin, and the external shape is a truncated cone shape, and the natural vibration in a range that does not resonate with the frequency around 20 Hz generated by the air conditioner AC. Anything that shows a number can be used. However, the shape of the coil spring in which the air layer is interposed in the vertical direction as in the tapered coil spring 3 according to the first embodiment is more solid such as a rubber material such as the tapered rubber spring 3 ′ according to the second embodiment. Compared to a solid solid shape anti-vibration material continuous in the vertical direction, the effect of attenuating vertical vibrations is high, and propagation of vertical vibrations of the air conditioner AC can be reliably prevented.

(First elastic material)
FIG. 7 is a front view showing a rubber cap 4 which is an embodiment of the first elastic member. The rubber cap 4 is made of an elastic resin (rubber material) such as ethylene propylene diene copolymer rubber (EPDM resin). As shown in FIGS. 7 and 3, a locking groove 4b is formed in the upper portion 4a. The lower portion 4 c is formed in a bag shape (cap shape) that covers the upper portion of the taper coil spring 3.

In this rubber cap 4, the locking groove 4b of the upper part 4a is fitted inside the upper hole 21a of the hanger box 2, and the upper part of the taper coil spring 3 is accommodated in the bag-like interior of the lower part 4c. By interposing between the suspension bolt B1 and the hanger box 2, it has a function of reducing the transmission of vibration to the upper suspension bolt B1.
Further, by covering the upper part of the taper coil spring 3, it also has a function of preventing the horizontal displacement of the upper part of the taper coil spring 3.

(Second elastic material)
FIG. 8 is a front view showing a rubber boot 5 which is an embodiment of the second elastic material. The rubber boot 5 is made of an elastic resin (rubber material) such as ethylene propylene diene copolymer rubber (EPDM resin). As shown in FIGS. 8 and 3, the outermost diameter of the uppermost part is 32 mm and the outermost diameter of the lowermost part is used. Is formed in a bag shape (boot shape) that covers the entire taper coil spring 3 by opening upward and extending from the bottom to the bottom of the fitting allowance 5a to the rubber cap 4. A bellows portion 5b is formed so as to be able to follow the expansion and contraction of the taper coil spring 3, and a reinforcing plain washer 5d is fitted into the bottom portion 5c in order to prevent wear due to sliding contact with metal parts such as nuts. ing.
The flat washer 5d is a washer having a diameter of 20 mm and a thickness of 2 mm, and a hole having a diameter of 10.5 mm into which a full screw bolt (suspending bolt B2) having a nominal diameter of 10 can be inserted.

The rubber boot 5 accommodates the taper coil spring 3 and is fitted inside the lower part 4c of the rubber cap 4, and is fastened to the lower end of the upper suspension bolt with a nut. Without interfering with the upper suspension bolt B1 and the taper coil spring 3, the vibration transmission to the upper suspension bolt B1 is reduced.
Further, by covering the entire outer side of the taper coil spring 3, there is a possibility that the installation worker will not pinch a finger between the springs of the taper coil spring 3, and also has a function of improving safety.

The relative relationship between the rubber cap 4 and the rubber boot 5 described above may be interchanged between the upper and lower sides and the inside and outside. The rubber cap 4 and the rubber boot 5 are not shaped to cover the entire outside of the tapered coil spring 3 as in the rubber boot 5. However, they may be shaped so as to cover the taper coil springs 3 by half.
In short, either or both of the first elastic material and the second elastic material have a bag shape that covers all or a part of the vibration isolating material, and does not interfere with the expansion and contraction of the vibration isolating material. Any material that is durable against repetition can be used without being limited to rubber.

<Attachment procedure of vibration-proof hanger>
Next, the installation procedure of the vibration-proof hanger will be described with reference to FIGS.
(Installation procedure 1)
First, an electric tool (for example, an electric nut driver) and a socket are connected to a ceiling insert TI embedded in a concrete slab CS, which is a structural frame, with a hexagonal push bolt or a double nut previously screwed into an appropriate length and cut into an appropriate length. Attach the anti-vibration hanger 1 using At this time, a short bolt may be used as the upper suspension bolt B1 to be mounted. Even if the position of the ceiling insert TI embedded in the concrete slab CS and the installation position of the air conditioner AC are misaligned by using the short upper suspension bolt B1, the vibration isolator is directly under the ceiling insert TI. Can be accommodated by installing diagonally downward from the lower suspension bolt B2, so that the direction of expansion and contraction displacement of the vibration isolator can be installed as close to the vertical direction as possible, and efficiently This is because harmful vertical vibrations can be prevented from propagating to the structural housing, and the vibration-proofing effect can be reliably exhibited.

  Further, the lower hole 22a drilled in the lower side portion 22 of the hanger box 2 has a size capable of inserting a socket of an electric tool for tightening a nut (or a head portion of a hexagonal push bolt) to be screwed with the upper suspension bolt B1. Therefore, the vibration-proof hanger 1 can be easily fastened to the upper suspension bolt B1 with a power tool in a short time. For this reason, the work time of the attachment work can be greatly shortened.

(Installation procedure 2)
Next, as shown in FIG. 11, a lower suspension bolt B <b> 2 consisting of all screw bolts is inserted into the lower hole 22 a of the hanger box 2, and the upper surface and the lower surface of the lower side portion 22 of the hanger box 2 are predetermined from the inner diameter of the lower side portion 22. The lower suspension bolt B2 is attached to the vibration-proof hanger 1 by biting a washer with a large diameter and tightening with a nut. Also at this time, since there is no obstacle below the lower suspension bolt B2, it is possible to tighten the nut with the electric tool, and to shorten the work time of the mounting work.

(Installation procedure 3)
Finally, as shown in FIG. 12, the air conditioner AC is structured through the vibration-proof hanger 1 by fixing the bracket of the air conditioner AC to the lower end of the lower suspension bolt B2 with a nut that is screwed with the lower suspension bolt B2. The installation work of hanging and supporting the concrete slab CS, which is a housing, is completed. At this time, the nut can be tightened with the electric tool, and not only can the work time of the mounting work be shortened, but also the horizontal level adjustment of the air conditioner AC can be facilitated.

<Effect of anti-vibration hanger>
According to the vibration isolator hanger 1 that is a suspended vibration isolator according to the embodiment of the present invention described above, the external shape of the vibration isolator (taper coil spring 3 or taper rubber spring 3 ′) is an inverted truncated cone shape. Therefore, even if the position of the ceiling insert TI and the installation position of the air conditioner AC are misaligned, there is little risk of contact between the hanger box 2 and the anti-vibration material, and the anti-vibration effect is reliably exhibited. can do.

  Further, since the rubber boot 5 covers the entire taper coil spring 3, when the taper coil spring 3 is installed and the nut is tightened, a hand, a tool, or the like is not accidentally sandwiched between the coils. Can reduce the risk of injury and improve the safety of installation work. In addition, even if the position of the ceiling insert TI and the installation position of the air conditioner AC are far apart and the anti-vibration hanger 1 has to be installed with the bottom suspension bolt B2 being extremely oblique, Since the taper coil spring 3 is covered with the rubber boot 5, the hanger box 2 and the taper coil spring 3 are not in direct contact, and vibration transmitted from the hanger box 2 to the suspension bolt via the taper coil spring 3 is generated in the rubber boot 5. It is reduced, and it is possible to minimize the inhibition of the vibration isolation effect.

  Furthermore, both the nut that secures the vibration isolator to the upper suspension bolt B1 and the nut that secures the hanger box 2 to the lower suspension bolt B2 can be tightened using an electric tool. Therefore, it is possible to save the installation work of the anti-vibration hanger 1 and reduce the installation cost by reducing the manual work. Moreover, since the lower hole 22a is large, the degree of freedom of the installation angle of the lower suspension bolt B2 that connects the air conditioner AC is increased, and even if the position where the ceiling insert TI is embedded and the position where the air conditioner AC is attached are separated, 1 can be installed easily and the anti-vibration effect can be exhibited.

As described above, the case where the anti-vibration hanger 1 is installed in the illustrated form as the suspension-type anti-vibration device according to the embodiment of the present invention has been described. Even if it is installed, it can function as a vibration isolator. However, when installed reversely, when the position of the ceiling insert TI and the installation position of the air conditioner AC are misaligned, the suspension bolt B2 to which the taper coil spring 3 as a vibration isolating material is fixed is inclined. This is a factor that hinders the anti-vibration effect of vertical vibration.
In addition, the air conditioner AC is exemplified as the vibration device, but the vibration device may be a pipe or the like as illustrated in FIG.

And the shape, structure, etc. of each component shown in the drawings as the suspension type vibration isolator according to the embodiment of the present invention are only a preferable example, and the design change can be appropriately made within the scope of the claims. Needless to say, it is possible. In particular, a concrete slab placed on a deck plate in an S-structure building was illustrated as a structural frame, but the present invention is not limited to this. A floor concrete slab in an RC structure, a steel beam in an S-structure, etc. The present invention can be applied to any structural housing capable of supporting a vibrating device, such as a beam or roof rafters or diagonal members.
In addition, the bellows portion 5b of the rubber boot 5 is also illustrated as having an outer shape rounded into an R shape. However, the cross section may be a simple bellows shape having a straight line connected in a zigzag manner.

1 Anti-vibration hanger (suspended anti-vibration device)
2 Hanger box (anti-vibration body)
3 Taper coil spring (vibration isolation material)
3 'Taper rubber spring (anti-vibration material)
4 Rubber cap (first elastic material)
5 Rubber boots (second elastic material)
AC air conditioner (vibration equipment)
B1 Top suspension bolt (suspension bolt)
B2 Lower suspension bolt (suspending bolt)
CS concrete slab (structural frame)
TI ceiling insert (insert)
DP deck plate

Claims (7)

A vibration isolator body that has an upper side and a lower side and is interposed in the middle of a suspension bolt that suspends a vibration device that generates vibrations, and supports the load of the vibration device, and an upper side and a lower side of the vibration suppression device body Between the vibration isolator and the vibration isolator body and between the vibration isolator and the suspension bolt. An upper and lower elastic material, and a suspended vibration isolator for preventing propagation of vibration of the vibration device,
The anti-vibration material is a suspended anti-vibration device characterized in that its outer shape is a truncated cone shape.   The suspended vibration isolator according to claim 1, wherein the vibration isolator main body includes a hollow rectangular frame having the upper and lower sides and a pair of left and right sides.   The suspended vibration isolator according to claim 1 or 2, wherein the vibration isolator is a coil spring having a coil diameter that decreases with increasing distance from an upper side or a lower side of the vibration isolator body. .   The hanging type vibration isolator according to claim 3, wherein one or both of the two elastic members have a bag shape covering all or a part of the coil spring.   The two elastic members are attached to an upper side portion of the vibration isolator main body, are attached to a rubber cap that covers an upper portion of the coil spring and restrains a horizontal displacement, and a lower end of the vibration isolator, The suspended vibration isolator according to claim 4, wherein the suspension antivibration tool is a rubber boot covering the entire outside of the vibration member. The vibration isolator is attached to the upper side of the vibration isolator body,
A hole having a size capable of inserting a socket portion of an electric tool for tightening the nut for fixing the vibration isolator is formed in a lower side portion of the vibration isolator main body, and the vibration device and the vibration isolator are inserted in the hole. The suspension type vibration isolator according to any one of claims 1 to 5, wherein a suspension bolt connecting the main body is inserted and fixed to the vibration isolator main body.   7. The suspension type anti-vibration according to claim 6, wherein an upper side portion of the anti-vibration tool body and the anti-vibration member are attached immediately below an insert embedded in a structural housing and screwed onto the suspension bolt. Shaker.

Images