Anti-vibration hanging devices and ceiling vibration-proof structures

Abstract

To provide an anti-vibration suspension capable of exerting anti-vibration effect in situations where the transmission of impact noise, etc. should be suppressed, and to provide a ceiling anti-vibration structure using the anti-vibration suspension.SOLUTION: An anti-vibration suspension 1 includes: a body 10 detachable to / from beam material; a hanging bolt 3 inserted through part of the body; and an elastic body 2 that absorbs vibration acting on the hanging bolt. The elastic body includes: a penetration part for allowing a hanging bolt to insert therethrough; and a female screw part 4 that allows the hanging bolt to screw on the upper surface side. The body includes: a bottom 11 for placing an elastic body; and a penetration portion 12 for allowing the hanging bolt to insert in an appropriate location of the bottom. The hanging bolt is supported by screwing into the female thread of the elastic body after being inserted through the insertion part provided at the bottom of the body and the through part of the elastic body mounted on the upper surface of the bottom of the body. A pressure-adjusting member 5 for pre-compression is provided to the elastic body. The elastic body is compressed and deformed in an appropriate state by the pressure-adjusting member.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vibration-isolating hanger and a ceiling vibration-isolating structure. [Background technology]

[0002] Anti-vibration slings have a structure in which an elastic body that allows appropriate elastic deformation is placed between a member that engages with a beam and a member that is attached to the ceiling, base material, or frames that support both, and there are those that use rubber as the elastic body (see Patent Document 1) and those that use spring bodies such as leaf springs (see Patent Document 2).These anti-vibration slings are designed solely to suppress the transmission of vibrations caused by impact noise and the like from the floor above to the ceiling, and are configured so that the transmission of vibrations is absorbed by the elastic body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 5-57145 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-87497 Summary of the Invention [Problem to be solved by the invention]

[0004] The vibration-isolating slings described above basically exert the same effects, except for the difference between using rubber or springs as the elastic body, and it can be said that there is no significant difference in the characteristics of their effects. However, as described above, the elastic body is provided between the member that engages with the beam and the member that supports the ceiling, etc., so when the ceiling, etc. is supported by the vibration-isolating sling, it is supported via the elastic body and is already in a state where an elastic force is acting on it.

[0005] In this way, ceilings, etc. suspended via elastic bodies are more susceptible to shaking than those suspended by non-elastic materials, and can easily vibrate due to vibrations other than those transmitted from above (such as noise from daily life in one's own room). Furthermore, because the elastic body of vibration-isolating slings deforms due to the weight of the ceiling, etc., when installing the ceiling, etc. to be supported, it was necessary to take into account the amount of deformation of the elastic body due to the weight of the ceiling, etc.

[0006] The present invention has been made in consideration of the above points, and its purpose is to provide an anti-vibration sling that can maintain a stable support state as a non-elastic member under normal circumstances, while exhibiting an anti-vibration effect in situations where the transmission of impact noise, etc. must be suppressed, and to provide a ceiling vibration-proof structure that uses this anti-vibration sling. [Means for solving the problem]

[0007] Therefore, the present invention relating to a vibration-isolating sling is a vibration-isolating sling for suspending a ceiling, a base material, or a frame for supporting both of them while exerting vibration-isolating performance, and is characterized in that it comprises a main body that is detachable from a beam, a suspension bolt that is inserted into a part of the main body, and an elastic body that is attached to the main body and supports the suspension bolt while absorbing vibrations acting on the suspension bolt, the elastic body having a through-hole for inserting the suspension bolt throughout the entire body and a female threaded portion on its top surface that allows the suspension bolt to be screwed in, the main body has a bottom for attaching the elastic body and an insertion portion at an appropriate location on the bottom, through which the suspension bolt is inserted, the suspension bolt is supported by being inserted through the insertion portion provided on the bottom of the main body and the through-hole in the elastic body attached to the top surface of the bottom of the main body, and then screwed into the female threaded portion of the elastic body, and a pressure adjustment member for pre-compression is provided on the elastic body, and the pressure adjustment member compresses and deforms the elastic body in an appropriate state.

[0008] In the vibration-isolating sling having the above-described configuration, the suspension bolt, which is attached to the ceiling, the base material, or the frames supporting both, and which suspends them, is supported by the female thread portion on the upper surface of the elastic body, thereby achieving vibration-isolating effects through compressive deformation of the elastic body. At this time, the elastic body can be pre-compressed by appropriately compressing it with the pressure adjustment member. This pre-compression prevents the elastic body from compressing and deforming even when the weight of the ceiling, etc. (ceiling, base material, and frames) acts on the suspension bolt, achieving stability similar to that achieved when supported by a non-elastic member.

[0009] Here, the pressure adjustment member is a member that allows the elastic body to be elastically deformed while allowing pre-compression only of the elastic body when it is attached to the main body, and that restricts the upper limit position of the elastic body relative to the upper surface side, allowing movement below the restricted upper limit position (compression of the elastic body).

[0010] Therefore, the pressure adjustment member is formed by a nut that is threaded onto the hanging bolt on the lower side of the elastic body and can abut against the underside of the bottom of the main body or the lower part of the elastic body, and by threading the nut toward the female threaded portion, the female threaded portion can be moved toward the bottom of the main body.

[0011] With the above configuration, when a downward load acts on the suspension bolt due to vibration, the suspension bolt descends together with the nut threaded onto it, allowing the elastic body to function when subjected to vibration. Also, when no vibration is acting, a predetermined gap is maintained between the top surface of the elastic body and the bottom of the main body or the lower part of the elastic body, so the pre-compressed state is maintained.

[0012] The pressure adjustment member can be formed by a pressing body that is placed on the upper side of the elastic body, and a screw portion that has a head that is placed on the upper part of the pressing body and a tip that reaches the bottom of the main body and can be screwed into the bottom, and by screwing the screw portion forward, the upper surface side of the elastic body can be moved toward the bottom of the main body via the pressing body.

[0013] According to the above configuration, the threaded portion can reduce the distance between the pressing body, which is located on the upper side of the elastic body, and the bottom of the main body, allowing pre-compression of the elastic body depending on the degree of reduction. At this time, the female threaded portion and the hanging bolt on the upper surface of the elastic body can be kept clear of the pressing body, allowing the pressing body to be held in place, while allowing free elastic deformation within the range where the top of the elastic body does not reach the pressing body. This makes it possible to adjust the degree of pre-compression by adjusting the threaded state of the threaded portion. The pressing body can be provided as a plate-shaped top plate, and to avoid contact with the female threaded portion and the hanging bolt, a method can be used in which a through-hole large enough in diameter to allow them to pass through can be provided.

[0014] Furthermore, the pressure adjustment member that exhibits the same function as above can be formed by a pressure body that is placed on the upper side of the elastic body, and a screw portion that has its head located below the bottom of the main body and its tip that reaches the pressure body and can be screwed into the pressure body, and can be configured so that by screwing the screw portion forward, the upper surface side of the elastic body moves toward the bottom of the main body via the pressure body.

[0015] In this configuration, the screw portion for determining the position of the pressing portion is disposed from the bottom side of the main body toward the pressing body, and the position of the pressing body can be adjusted by the state of threading of the screw portion, as described above. In this way, the difference between providing the head of the screw portion on the bottom side of the main body or on the top of the pressing body can be used depending on whether the state of pre-compression by the pressing body is adjusted from above or below the main body.

[0016] In the above configuration using a pressing body, the pressing body may have an insertion portion through which the hanging bolt can be inserted, the female screw portion may be provided on the pressing body, and further, the screw portion attached between the pressing body and the bottom of the main body portion may be configured to be loosely inserted into the pressing body or the bottom where the head side is located.

[0017] In the above configuration, the pressing body is integrated with the upper surface of the elastic body, and when a downward load acts on the suspension bolt due to vibration or the like, the compressive force on the elastic body is transmitted via the pressing body. At this time, when the bolt transitions from a pre-compressed state to compressive deformation for vibration isolation, the threaded portion is loosely inserted into the member on which the head is located so as not to hinder elastic deformation. Due to this loosely inserted state, during deformation during vibration isolation, the head of the threaded portion is separated from the member (the bottom of the main body or the pressing body) and allows free deformation.

[0018] In the vibration-isolating slings of each of the above configurations, the main body can be configured to include an insertion portion that allows the beam to be inserted and a screw portion for clamping the beam inserted into the insertion portion. This configuration makes it possible to lock various beams (components of different dimensions).

[0019] Furthermore, in the vibration-damping suspension devices of each of the above configurations, the elastic body can be a plate spring in which at least the lower and upper surface portions are approximately parallel and which is integrated into an approximately S-shaped cross section with a connecting portion in the middle, and through holes for inserting the suspension bolts can be provided in each of the lower surface portion, upper surface portion and connecting portion that make up the plate portion.

[0020] According to the above-mentioned configuration, the elastic body can be formed by the leaf spring without using rubber, and by providing the upper and lower surfaces substantially parallel to each other, the upper surface of the leaf spring can maintain a flat state even when elastically deformed, thereby preventing the upper surface from tilting due to deformation even in the pre-compressed state. In particular, when a pressing body is provided, the contact surface between the pressing body and the upper surface can be stabilized by surface contact.

[0021] In the vibration-isolating hangers having the above configurations, the female thread provided on the top surface of the elastic body can be formed by a pop nut attached to the through hole of the leaf spring or the insertion portion of the pressing body. This allows the female thread to be formed even in a thin member, as in the case where the elastic body is formed by a leaf spring or the pressing body is provided by a top plate, and enables the load acting on the hanging bolt to be sufficiently transmitted to the elastic body.

[0022] On the other hand, the present invention relating to a ceiling vibration isolation structure is a ceiling vibration isolation structure that uses any of the vibration isolation hanging devices of the configurations described above, and is characterized in that the main body is engaged with the beam material, the hanging bolt is screwed into a female threaded portion provided on the upper surface side of an elastic body installed on the main body material, the elastic body is pre-compressed by the pressure adjustment member, the frames are supported at the bottom of the hanging bolt, and the ceiling or the base material or both are supported by the frames.

[0023] In the ceiling vibration-proof structure configured as described above, the main body is fixed in a state where it is engaged with the beams, and frames and ceilings, etc. are supported by suspension bolts suspended from this fixed main body. At this time, a compressive load is applied to the elastic bodies provided on the main body by the suspension bolts, and the elastic bodies are elastically deformed in response to this compressive load, thereby achieving a vibration-proof effect. At this time, a load equivalent to the weight of the frames, ceiling, etc. is applied in advance by pre-compressing the elastic bodies, so the elastic bodies do not deform when supporting the frames, ceiling, etc., and when a load exceeding this, i.e., an external load due to vibration, etc., is applied, the elastic bodies undergo compressive deformation, thereby achieving a vibration-proof effect. [Effects of the Invention]

[0024] According to the vibration-isolating sling of the present invention, by pre-compressing the elastic body, the elastic body is not in a state in which it can elastically deform when it is simply supporting a frame, ceiling, etc. (normal state), and therefore it is in a stable supporting state as a non-elastic member. Then, in a situation in which the transmission of impact noise, etc. must be suppressed, the elastic body can deform beyond the pre-compressed state, and therefore it can exert a vibration-isolating effect.

[0025] On the other hand, with the ceiling vibration isolation structure of the present invention, the ceiling etc. is normally supported in a stable state, and when the transmission of impact noise etc. needs to be suppressed, vibration can be isolated by the elastic deformation of the elastic body. It is expected that the degree of load acting on the suspension bolts under normal conditions will differ depending on the design of the ceiling structure, etc., but the adjustment function of the pressure adjustment member makes it possible to adjust the state of pre-compression as appropriate. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is an explanatory diagram showing an outline of a ceiling vibration isolation structure. [Figure 2] 1 is an exploded perspective view showing a first embodiment of a vibration-isolating hanger. FIG. [Figure 3]FIG. 1(a) is a perspective view showing a first embodiment of a vibration-isolating sling device, and FIG. 1(b) is a cross-sectional view taken along line IIIB-IIB. [Figure 4] FIG. 1 is an explanatory diagram showing a first embodiment of a vibration-isolating hanger. [Figure 5] 1A and 1B are explanatory views showing an operation mode of the first embodiment of the vibration-isolating sling device. [Figure 6] FIG. 1(a) is a perspective view showing a second embodiment of the vibration-isolating sling device, and FIG. 1(b) is a cross-sectional view taken along line VIB-VIB. [Figure 7] FIG. 10 is an explanatory diagram showing a second embodiment of the vibration-isolating hanger. [Figure 8] 10A and 10B are explanatory views showing an operation mode of the second embodiment of the vibration-isolating sling device. [Figure 9] FIG. 10 is an explanatory diagram showing a modified example of the vibration-isolating hanger according to the first embodiment. [Figure 10] FIG. 10 is an explanatory diagram showing a modified example of the second embodiment of the vibration-isolating hanger. [Figure 11] FIG. 10 is an explanatory diagram showing another modified example of the second embodiment of the vibration-isolating hanger. DETAILED DESCRIPTION OF THE INVENTION

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. First, an outline of a ceiling vibration isolation structure will be described, followed by a description of an embodiment relating to a vibration isolation suspender.

[0028] <Ceiling vibration isolation structure> Figure 1 is a diagram showing an outline of a ceiling vibration-isolation structure. As shown in this figure, a vibration-isolation sling 1 is fastened to a beam A, and the figure illustrates a case where it is fastened to the flange portion of an H-shaped steel. This vibration-isolation sling 1 has an elastic body 2, and the vicinity of the upper end of a suspension bolt 3 inserted into a main body 10 of the vibration-isolation sling 1 is connected to the top of the elastic body 2 to support the suspension bolt 3. A load acting on the suspension bolt 3 acts from above on the elastic body 2 in a state that compresses the elastic body 2, and vibration is isolated by utilizing the compressive deformation (elastic deformation) of this elastic body 2.

[0029] A hanger B is attached near the lower end of the hanging bolt 3, and the hanger B supports a siding support (frame) C, which in turn supports a siding (frame) E via a clip D attached to the siding support C. The siding E is then used to install a surface material (ceiling or base material, or both (hereinafter sometimes referred to as the ceiling, etc.)) F.

[0030] Since vibrations caused by impact noise and the like are transmitted to the ceiling, etc. F through various transmission paths, when such vibrations are transmitted, the elastic body 2 elastically deforms to absorb the vibrations. Because impact noise is known to propagate through the ceiling space (ceiling cavity), ceiling vibrations can occur even when the beams A are firmly installed, and a suspended ceiling can also vibrate due to earthquakes, etc. For this reason, vibration-isolating hangers 1 are interposed between the beams A and the hanging bolts 3 to absorb the vibrations while supporting the weight of the frames C, E and the ceiling, etc. F.

[0031] Note that the figure shows only part of a ceiling vibration-isolation structure, with multiple long beams A arranged parallel to one another. Similarly, multiple joist supports C and joist E are also installed. Therefore, there are multiple locations where joist supports C are supported using vibration-isolation suspenders 1, and vibration-isolation suspenders 1 are used in all of these locations. Furthermore, the illustrated ceiling vibration-isolation structure is an example of a ceiling structure that uses vibration-isolation suspenders 1; in some cases, joist E is directly supported near the bottom of the suspension bolts 3 without using hangers B or joist supports C. In addition, in some cases, either a base material or a ceiling is attached to the joist E, and then decorative panels are laminated on top of the base material as the ceiling material.

[0032] In this way, when various frames C, E, and ceilings F are supported, vibrations generated in the ceilings F are absorbed by the elastic body 2. The vibration-isolating sling 1 used here has a pre-compressed elastic body 2, as described below. Pre-compression involves compressive deformation in the direction in which a compressive load is applied. When a load within the range corresponding to the pre-compression load acts on the elastic body, elastic deformation due to the load is suppressed. In other words, even when the weight of normal frames C, E, and ceilings F acts on the elastic body 2, the elastic body 2 does not deform, preventing the suspension bolt 3 from descending. As a result, the installation state of the suspension bolt 3 remains unchanged before and after installation of the frames C, E, and ceilings F, eliminating the need for subsequent position adjustment. At the same time, the suspension bolt 3 suspended via the elastic body 2 is not biased upward by the restoring force of the elastic body 2. Therefore, in the installed state, it can be considered as if it were installed by a non-elastic member, eliminating the need for unstable installation work due to elastic deformation.

[0033] Therefore, an embodiment of the vibration-isolating suspender 1 that enables such pre-compression will be described in detail below.

[0034] <First embodiment of vibration-isolating sling> As shown in Figure 2, the first embodiment of the vibration-proof suspension device 1 is generally configured to include a main body 10, an elastic body 2 attached to the main body 10, and a suspension bolt 3 inserted through the main body 10 and connected to the elastic body 2.

[0035] The main body 10 is provided with a bottom 11 for attaching the elastic body 2, and an insertion portion 12 is provided in this bottom 11 to allow the suspension bolt 3 to be inserted therethrough. The main body 10 also allows a portion of the beam A (such as the flange portion of an H-beam) to be inserted therein, and the beam can be clamped and locked. To this end, the main body 10 is provided with an insertion portion 13 formed by cutting out a portion thereof, and a threaded portion 14 that can be attached to the bottom 11. The threaded portion 14 is threadedly engaged with a female thread 15 formed in the bottom 11, and by raising its tip, it can come into contact with a portion of the beam. The beam is clamped by placing a portion of the beam between the inner end face of the insertion portion 13 and the tip of the threaded portion 14.

[0036] In this embodiment, a leaf spring bent into a substantially S-shape is used as the elastic body 2 attached to the bottom 11 of the main body 10. Specifically, the spring elastic body 2 is composed of three flat areas: a lower surface 21 and an upper surface 22 arranged substantially parallel to each other, and a connecting portion 23 located between them, with curved areas 24 and 25 provided in the middle of the flat areas. By forming the elastic body 2 from such a substantially S-shaped spring body, when the spring body (elastic body) 2 as a whole is compressed and deformed, the upper surface 22 can maintain a parallel state with the lower surface 21, and the state of compressive deformation can also be adjusted by raising and lowering the upper surface 22.

[0037] The lower surface 21 of the spring body (elastic body) 2 is provided with through holes 26, 27, and can be fixed with rivets 28, 29 or the like using the through holes 16, 17 provided in the bottom 11 of the main body 10. This is to prevent the spring body (elastic body) 2 from moving when it undergoes repeated elastic deformation.

[0038] The lower surface portion 21, the upper surface portion 22, and the connecting portion 23 also have coaxial through-holes 41, 42, and 43, which function as insertion portions through which the suspension bolt 3 can be inserted vertically. A female thread is formed by a pop nut 4 installed in the through-hole 41 of the upper surface portion 22. By threading the suspension bolt 3 into the female thread (pop nut) 4, the suspension bolt 3 is supported on the upper surface of the spring body (elastic body) 2. The suspension bolt 3 is supported by being threaded into the female thread 4 so that the height of the suspension bolt 3 can be adjusted. By rotating the suspension bolt 3 to adjust its vertical position, the height of the aforementioned hanger B can be adjusted, and as a result, the joist E, ceiling F, etc. can be installed at a desired height.

[0039] With this configuration, as shown in Figure 3(a), the suspension bolt 3 is inserted through the bottom 11 of the main body 10, and also through the spring body (elastic body) 2 installed at the bottom, and the vicinity of the upper part is threaded into the female thread part (pop nut) 4, maintaining the overall unity. The thread part 14 for engaging with the beam can have its tip protrude above the bottom 11 of the main body 10.

[0040] The pressure adjustment member of this embodiment utilizes the male thread of the suspension bolt 3. That is, by attaching a flange nut 5 to the male thread portion of the suspension bolt 3 and screwing the flange nut 5 upward, the flange nut 5 can be brought into contact with the lower part of the spring body (elastic body) 2 or the lower part of the bottom 11 of the main body 10. When the flange nut 5 is brought into contact with the lower part of the bottom 11, the insertion part 12 provided in the bottom 11 is configured as a through hole with a diameter smaller than the outer diameter of the flange nut 5. When the flange nut 5 is brought into contact with the lower part of the spring body (elastic body) 2, the insertion part 12 is configured as a through hole with a diameter larger than the outer diameter of the flange nut 5, and the through hole in the lower surface part 21 of the spring body 2 can be made smaller in diameter than the outer diameter of the flange nut 5.

[0041] 3(b) illustrates an example in which the flange nut 5 is brought into contact with the lower part of the bottom 11 of the main body 10. This figure is a cross-sectional view taken along line IIB-IIB in FIG. 3(a). As shown in this figure, the insertion portion 12 provided in the bottom 11 of the main body 10 is formed by a small-diameter through-hole, and the flange nut 5 is provided in a state in which it is screwed below the main body 10. When the flange nut 5 has not yet reached the main body 10, the spring body (elastic body) 2 is in an uncompressed state.

[0042] From the above state, by screwing the flange nut 5 upward, it can be brought into contact with the lower part of the bottom 11 of the main body 10, as shown in FIG. 4(a). Then, by further screwing it, the suspension bolt 3 can be lowered, using the bottom 11 of the main body 10 as a reference, as shown in FIG. 4(b). This lowering of the suspension bolt 3 pulls down the female threaded portion (Pop Nut) 4 that is threaded near the upper end of the suspension bolt 3, forcibly pressing the spring body (elastic body) 2 from above. Depending on the state of screwing the flange nut 5 at this time, the degree of lowering of the suspension bolt 3 and the female threaded portion (Pop Nut) 4 can be adjusted, and as a result, the degree of compression of the spring body (elastic body) 2 due to pressing can be adjusted. With this configuration, the deformation due to pressing is pre-compression, and the mechanism for pressing in the compression direction is also effective. but It is a pressure adjusting member.

[0043] <Operation mode> Since this embodiment is configured as described above, by adjusting the pre-compression as described above, when a load (normal load) W acting on each vibration-isolating sling 1 from a frame, ceiling, or the like acts on the sling bolt 3 as shown in Figure 5(a), the normal weight W acting from the sling bolt 3 on the female thread portion (pop nut) 4 of the spring body (elastic body) 2 does not reach a level that compresses the spring body (elastic body) 2. In this state, since the spring body (elastic body) 2 is not compressed or deformed even when the weight W of the ceiling or the like acts on it, naturally the spring body (elastic body) 2 does not vibrate (expand or contract) and can be made up of only non-elastic material.

[0044] As shown in Figure 5(b), when a downward load (additional load) α due to vibration of the ceiling or the like acts in addition to the normal load W, the total added load (W + α) acts on the hanging bolt 3, exceeding the compressive load due to the pre-compression, causing the hanging bolt 3 to descend and the spring body (elastic body) 2 to undergo compressive deformation.

[0045] At this time, the flange nut 5 attached to the suspension bolt 3 simultaneously descends without changing its position on the suspension bolt 3, and moves away from the lower part of the bottom 11 of the main body 10, where it was initially abutting. Because the additional load α is due to vibration of the ceiling or the like, the suspension bolt 3 descends and then rises due to the restoring force of the spring body (elastic body) 2. However, the upper limit of the rise at this time is the position where the flange nut 5 abuts against the bottom 11 of the main body, and the above state is repeated as long as the vibration of the ceiling or the like continues. Then, when the vibration of the ceiling or the like ends, the spring body (elastic body) 2 again stabilizes in a pre-compressed state, as shown in FIG. 5(a).

[0046] In this way, the spring body (elastic body) 2 does not expand or contract within the range where the additional load α caused by vibration of the ceiling, etc. does not act, and therefore the entire vibration-damping sling 1 is made up of only non-elastic materials. Therefore, when installing this vibration-damping sling 1 and installing frames, ceilings, etc., it is not necessary to take into account changes in position due to expansion and contraction of the spring body (elastic body) 2, thereby improving work efficiency.

[0047] <Second embodiment of vibration-isolating sling> Figure 6 shows a second embodiment of the vibration-isolating sling. Figure 6(a) is an overall perspective view, and Figure 6(b) is a cross-sectional view taken along line VIB-VIB. As shown in these figures, this embodiment has a pressing body 6 provided on the upper side of a spring body (elastic member) 2, and pre-compresses the spring body (elastic body) 2 by pressing this pressing body 6 downward.

[0048] The pressing body 6 is installed by being stacked on the upper side of the upper surface portion 22 of the spring body (elastic body) 2, like the top plate portion of the spring body (elastic body) 2. Furthermore, through holes 61, 62 are provided in the pressing body 6 in portions that protrude on both sides of the spring body (elastic body) 2, and threaded portions 63, 64 are provided so as to be loosely inserted into the through holes 61, 62. Female threads 18, 19 are formed on the bottom surface portion 11 of the main body 10 opposite the through holes 61, 62, and are configured to allow the threaded portions 63, 64 to be screwed into them.

[0049] The heads 63a, 64a of the screw portions 63, 64 are arranged on the upper side of the pressing body 6, and the tips 63b, 64b are screwed into the female screws 18, 19 provided on the bottom 11 of the main body 10, thereby integrating the pressing body 6 with the bottom 11. When the screw portions 63, 64 are threaded forward, the heads 63a, 64a move the pressing body 6 downward, and the descent of the pressing body 6 lowers the upper part of the spring body (elastic body) 2, making it possible to press the spring body (elastic body) 2 so as to compress the entire spring body (elastic body) 2.

[0050] In this embodiment, a female screw portion 4 is provided at approximately the center of the pressing body 6 by a burring tap 65 that has been burred, and the hanging bolt 3 is screwed into this female screw portion 65, so that the hanging bolt 3 is supported on the upper surface side of the spring body (elastic body) 2.

[0051] According to this embodiment, as shown in Fig. 7(a), by threading the vicinity of the upper end of the suspension bolt 3 into the female thread portion 4 (burning tap 65) of the pressing body 6, the pressing body 6 can be disposed on the upper surface side of the spring body (elastic body) 2, and in this state, the tips 63b, 64b of the threaded portions 63, 64 can be threaded into the female threads 18, 19 provided on the bottom surface portion 11 of the main body 10. The lengths of the shanks of the threaded portions 63, 64 are adjusted so that the heads 63a, 64a do not compress and deform the spring body (elastic body) 2 via the pressing body 6 when the tips 63b, 64b are threaded into the female threads 18, 19 (see Fig. 7(a)).

[0052] From this state, the threaded portions 63, 64 are threaded forward, deforming the spring body (elastic body) 2 via the pressing body 6. As shown in FIG. 7(b), by threading the two threaded portions 63, 64 arranged on both sides to the same extent, the pressing body 6 can be moved downward in parallel, pressing the entire upper surface 22 of the spring body (elastic body) 2 downward (in a surface contact state), compressing the spring body (elastic body) 2. At the same time, the suspension bolt 3 threaded into the female threaded portion 4 (burning tap 65) is machined. In this state, the spring body (elastic body) 2 is in a pre-compressed state.

[0053] <Operation mode> As shown in Figure 8(a), when the spring body (elastic body) 2 is in a pre-compressed state, as in the first embodiment, even if the weight W of the frames, ceiling, etc. acts on the suspension bolt 3, the spring body (elastic body) 2 will not be compressed, and will be in a state where it is composed only of non-elastic material.

[0054] As shown in FIG. 8(b), when an additional load α is applied due to vibration of the ceiling or the like, the suspension bolt 3 is pulled down, compressing and deforming the spring body (elastic body) 2 via the pressing body 6. At this time, the threaded portions 63, 64 that guided the pressing body 6 downward are maintained in an upright state by the bottom portion 11 of the main body 10. On the other hand, since the threaded portions 63, 64 are loosely inserted into the through holes 61, 62 of the pressing body 6, the pressing body 6 can be freely lowered regardless of the state of the threaded portions 63, 64. Note that, since the through holes 61, 62 of the pressing body 6 are in a state where they descend along the threaded portions 63, 64, the threaded portions 63, 64 can be used as guides in the downward direction.

[0055] Since this embodiment has the above-described configuration, the pre-compression of the spring body (elastic body) 2 by the pressing body 6 can be adjusted by the screw-threaded state of the screw portions 63, 64, and therefore the pressing body 6 and the screw portions 63, 64 form a pressure adjustment member.

[0056] <Variation 1> Next, a modification of the above embodiment will be illustrated. Fig. 9 shows a modification of the first embodiment. As shown in this figure, the flange nut 5 is configured to abut against the lower part of the lower surface 21 of the spring body (elastic body) 2. In order to abut the flange nut 5 against the lower part of the lower surface 21 of the spring body (elastic body) 2 in this way, it is necessary to configure the flange nut 5 so that it can be inserted through the bottom 11 of the main body 10. Therefore, in this modification, the insertion part 12 provided in the bottom 11 of the main body 10 is formed by a through hole with a diameter larger than the flange diameter of the flange nut 5.

[0057] In a modified example of the above configuration, as shown in Figure 9(a), the flange nut 5 can be operated from below the bottom 11 of the main body 10, and the flange nut 5 can be screwed in until it abuts the lower surface 21 of the spring body (elastic body) 2. Depending on the state of subsequent screwing, the suspension bolt 3 can be pulled down using the lower surface 21 as a reference, and the upper surface 22 can be lowered via the female thread portion (pop nut) 4, thereby allowing pre-compression.

[0058] As shown in Figure 9(b), when a load due to vibration acts on the hanging bolt 3 in addition to the weight W of the ceiling, etc., the flange nut 5 together with the hanging bolt 3 passes through the insertion portion 12 and moves outward (below the bottom 11), causing the upper surface 22 of the spring body (elastic body) 2 to descend as a whole.In contrast, the lower surface 21 of the spring body (elastic body) 2 remains constant in contact with the bottom 11, so the spring body (elastic body) 2 can elastically deform within the range to which the upper surface 22 descends.

[0059] <Variation 2> Next, a modified example of the second embodiment will be described. Fig. 10 shows this modified example. As shown in this figure, in modified example 2, when attaching the pressing body 6, heads 63a, 64a of screw portions 63, 64 are arranged on the bottom 11 side of the main body 10. Naturally, through holes 61, 62 are provided on the bottom 11 of the main body 10, and female screws 18, 19 are engraved on the pressing body 6 side.

[0060] In this configuration, as shown in Figure 10(a), the screw portions 63, 64 are operated from below the bottom portion 11, and the tips 63b, 64b of the screw portions 63, 64 are screwed into the pressing body 6. Then, by screwing both screw portions 63, 64 forward to the same extent, the pressing body 6 can be drawn toward the bottom portion 11, and the movement of the pressing body 6 can compress the spring body (elastic body) 2, thereby enabling pre-compression.

[0061] 10(b), when a load due to vibration acts on the hanging bolt 3 in addition to the weight W of the ceiling or the like, the pressing body 6 descends via the hanging bolt 3, compressing the spring body (elastic body) 2, and at this time, the threaded portions 63, 64 threadedly attached to the pressing body 6 move inside the through holes 61, 62 provided in the bottom 11 of the main body 10. At this time, the heads 63a, 64a of the threaded portions 63, 64 protrude below the bottom 11, and when they rise again due to the restoring force of the spring body (elastic body) 2, they are stopped with the heads 63a, 64a in contact with the surface of the bottom 11.

[0062] <Other variations> Although the embodiments and modifications of the present invention have been described above, the present invention is not intended to be limited to these embodiments and modifications. That is, the elements exemplified as the embodiments and modifications may be further modified or other elements may be added.

[0063] 11(a), a further modification of the modification (modification 2) of the second embodiment is also possible. In the modification shown in this figure, the pressing body 6 is simply used to press the spring body (elastic body) 2 from above, and the female screw portion (pop nut) 4 is provided on the upper surface 22 of the spring body (elastic body) 2. Here, a large through-hole 66 is provided in the pressing body 6 so that the upper end portion of the hanging bolt 3 and the female screw portion (pop nut) 4 provided on the spring body (elastic body) 2 do not interfere with the pressing body 6.

[0064] 11(b), the pressing body 6 may be configured by two locking pieces 60a, 60b separated on both sides of the spring body (elastic body) 2. Both of these locking pieces 60a, 60b are plate-like members formed with a substantially L-shaped cross section, with one side serving as pressing piece portions 67a, 67b in contact with the upper part of the spring body (elastic body) 2 and the other side serving as sliding piece portions 68a, 68b in sliding contact with the side wall of the main body 10. Furthermore, the pressing piece portions 67a, 67b are provided with female threads into which the screw portions 63, 64 can be threaded. When using the locking pieces 60a, 70b configured in this manner, the threaded portions 63, 64 are screwed into the female threads of the pressing piece portions 67a, 67b, and the sliding piece portions 68a, 68b are brought into sliding contact with the side wall of the main body 10, whereby the positioning is achieved, and since the sliding piece portions 68a, 68b are brought into sliding contact with the side wall of the main body 10, co-rotation of the locking pieces 60a, 60b when the threaded portions 63, 64 are threaded forward can be prevented, and therefore the pressing pieces 67a, 67b can be raised and lowered by operating the threaded portions 63, 64 below the bottom 11 of the main body 10. The descent of the pressing pieces 67a, 67b at this time enables pre-compression of the spring body (elastic body) 2.

[0065] As described above, according to the embodiment and modified examples of the vibration-isolating sling, by precompressing the spring body (elastic body) 2, when the spring body (elastic body) is supporting a frame, ceiling, or the like (normally), the spring body (elastic body) 2 can be placed in a state where it does not deform, and a state where it is supported by a non-elastic member can be created. This state is created solely by using pressure adjustment members such as the flange nut 5 or the threaded portions 63, 64, so that appropriate precompression can be applied depending on the weight of the ceiling, etc. to be supported. Furthermore, when a load α due to the transmission of impact noise or the like acts on the spring body (elastic body) 2, the spring body (elastic body) 2 can be compressed, and therefore can exhibit vibration-isolating effects.

[0066] Furthermore, with the ceiling vibration isolation structure using the vibration isolation hanger 1, the support state of the ceiling, etc. is stable under normal circumstances, and when the transmission of impact noise, etc. needs to be suppressed, the spring body (elastic body) 2 can contribute to vibration isolation by elastically deforming within a range that exceeds the normal range. [Explanation of symbols]

[0067] 1 Anti-vibration sling 2. Spring body (elastic body) 3 Hanging bolt 4 Female thread (Pop nut) 5 Flange nut (pressure adjustment part) 6 Pressing body 10 Main body of vibration isolation sling 11 Bottom of the main body 12 Insertion part 13. Entering the Department 14 Threaded part (for fastening beam material) 15 Female screw (for securing beam material) 16,17 Through holes 18,19 Female thread (for screwing in the threaded part of the pressing body) 21 Lower surface of spring body 22 Upper surface of spring body 23 Spring body connection part 24,25 Curved area 26,27 Through holes (for rivets) 28,29 Rivets 41, 42, 43 Spring body through hole (elastic body insertion part) 60a,60b Locking piece 61, 62 Through holes (for inserting the screw part of the pressing body) 63,64 Threaded portion (for pressing body) 65 Burning Tap (female thread) 66 Through hole 67a, 67b Pressing piece 68a,68b Sliding contact piece W Normal load (weight of frames and ceiling, etc.) α Additional load (load due to vibration)

Claims

1. A vibration-isolating sling for suspending a ceiling, a base material, or a frame for supporting both of them while exerting vibration-isolating performance, A main body that can be attached to and detached from a beam material; a suspension bolt inserted into a part of the main body; an elastic body attached to the main body, supporting the suspension bolt and absorbing vibrations acting on the suspension bolt; The elastic body has a through-hole for inserting a suspension bolt therethrough and a female screw portion on the upper surface side for allowing the suspension bolt to be screwed in, the main body portion includes a bottom portion for mounting the elastic body, and an insertion portion for inserting the suspension bolt at an appropriate location on the bottom portion; the suspension bolt is supported by being inserted through an insertion portion provided at the bottom of the main body and a penetration portion of an elastic body attached to the upper bottom surface of the main body, and then being screwed into a female thread portion of the elastic body; A vibration-proof sling device characterized in that a pressure adjustment member is provided to compress the elastic body, and the pressure adjustment member compresses and deforms the elastic body in a state that can be viewed as being installed by a non-elastic member when installed.

2. 2. The vibration-damping suspension device of claim 1, wherein the pressure adjustment member is formed by a nut that is threaded onto the suspension bolt on the lower side of the elastic body and can abut against the underside of the bottom of the main body or the lower part of the elastic body, and by threading the nut toward the female threaded portion, the female threaded portion is moved toward the bottom of the main body.

3. 2. The vibration-damping sling described in claim 1, wherein the pressure adjustment member is formed by a pressing body that is placed on the upper side of the elastic body, and a screw portion that has a head that is placed on the upper part of the pressing body and a tip that reaches the bottom of the main body and can be screwed into the bottom, and by screwing the screw portion forward, the upper surface side of the elastic body is moved toward the bottom of the main body via the pressing body.

4. 2. The vibration-damping sling described in claim 1, wherein the pressure adjustment member is formed by a pressing body that is placed on the upper side of the elastic body, and a screw portion that has its head located below the bottom of the main body and its tip that reaches the pressing body and can be screwed into the pressing body, and by screwing the screw portion forward, the upper surface side of the elastic body is moved toward the bottom of the main body via the pressing body.

5. 5. The vibration-damping suspension device according to claim 3 or 4, wherein the pressing body has an insertion portion through which the suspension bolt can be inserted, the female screw portion is provided on the pressing body, and the screw portion attached between the pressing body and the bottom of the main body is loosely inserted into the pressing body or the bottom where the head side is located.

6. The vibration-damping hanger according to any one of claims 1 to 5, wherein the main body portion is provided with an engagement portion that allows the beam material to be engaged and inserted, and a screw portion for clamping the beam body that is engaged with the engagement portion.

7. The vibration-damping hanger according to any one of claims 1 to 6, wherein the elastic body is a leaf spring having at least a lower surface portion and an upper surface portion that are approximately parallel to each other and an S-shaped cross section that has a connecting portion in the middle, and the lower surface portion, upper surface portion, and connecting portion that make up the leaf spring each have a through hole for inserting the hanging bolt therethrough.

8. 8. The vibration-isolating sling according to claim 7, wherein the female screw portion provided on the upper surface of the elastic body is formed by a pop nut that is attached to a through hole of the leaf spring.

9. A ceiling vibration isolation structure using the vibration isolation hanger according to any one of claims 1 to 8, The main body portion is engaged with the beam material, The suspension bolt is screwed into a female screw portion provided on the upper surface side of the elastic body installed in the main body portion, The elastic body is pre-compressed by the pressure adjusting member, The frames are supported at the lower part of the hanging bolts, The ceiling or the underlayment or both are supported by the frames. A ceiling vibration-proof structure characterized by:

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