Anti-vibration hanging devices and ceiling vibration-proof structures

Abstract

To provide an anti-vibration suspension capable of exerting an anti-vibration effect in situations where the transmission of impact noise, etc. should be suppressed while maintaining a stable support state as an inelastic member at normal times, and to provide a ceiling anti-vibration structure using the anti-vibration suspension.SOLUTION: A anti-vibration suspension 1 includes: a body 10 capable of being attachable to / detachable from a beam; a hanging bolt 3 that is inserted through part of the body; and a spring body 2 that absorbs vibration acting on the hanging bolt. The spring body is a plate spring integrated into a roughly S-shaped cross-section which has a connecting portion 23 in the middle that has at least a lower surface portion 21 and an upper surface portion 22 which are substantially parallel to each other. The body includes: a bottom part 11 for placing a bottom part of the plate spring; an insertion part in an appropriate place of the bottom for allowing the hanging bolt to insert; and locking portions 5a and 5b for locking the upper surface of the plate spring. The plate spring allows the hanging bolt to insert, a female screw part 4 is provided on the upper surface to connect with the hanging bolt, and is mounted with appropriate compression between the bottom part of the body and the locking part.SELECTED DRAWING: Figure 4

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 relates to a vibration-isolating sling that is used to suspend a ceiling, a base material, or a frame that supports both of these while exerting vibration-isolating performance, and includes a main body that can be attached to and detached from a beam, a suspension bolt that is inserted through a part of the main body, and a spring body that is attached to the main body and supports the suspension bolt while absorbing vibrations acting on the suspension bolt, the spring body being a leaf spring that is integrated with at least a lower surface portion and an upper surface portion that are approximately parallel and has a connecting portion in the middle and has a substantially S-shaped cross section, and the main body portion has a bottom surface portion for attaching the lower surface portion of the leaf spring, and a spring body that is attached to and detached from the bottom surface portion of the leaf spring. The leaf spring has an insertion portion through which the hanging bolt is inserted at an appropriate location on the bottom surface of the main body, and an engagement portion that engages the upper surface of the leaf spring, and the leaf spring has through holes in all of the upper surface, lower surface, and connecting portion to allow the hanging bolt to be inserted, and a female screw portion is provided on the upper surface for connecting to the hanging bolt, and is attached in a state where it is subjected to appropriate compression between the bottom surface of the main body and the engagement portion, and the hanging bolt is inserted into the insertion portion provided on the bottom of the main body and the through portion of the leaf spring, and is supported by the female screw portion.

[0008] In the vibration-isolating sling having the above-described configuration, the suspension bolts that suspend the ceiling, the base material, or the frames supporting both are supported by the female threads on the top surface of the leaf spring (spring body), and the entire leaf spring undergoes compressive deformation, providing vibration-isolating effects. The leaf spring is pre-compressed appropriately between the bottom of the main body and the locking portion, and is already deformed in accordance with this precompression. By precompressing the leaf spring, deformation of the leaf spring is suppressed when the ceiling, base material, and frames are supported by the suspension bolts. In other words, although the weight of the ceiling acts on the leaf spring via the suspension bolts, the leaf spring does not compress and deform at the limit of the precompression applied, providing stability similar to that of a non-elastic member.

[0009] 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).

[0010] In the vibration-isolating hangers having the above configurations, the female thread provided on the top surface of the leaf spring can be formed by a pop nut attached to a through hole in the top surface. This means that when the spring body is made of a leaf spring, a female thread can be formed even in a thin member, and the load acting on the hanger bolt can be sufficiently transmitted to the spring body.

[0011] 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, characterized in that the main body is engaged with the beam material, the hanging bolt is screwed into the female threaded portion provided on the upper surface of the leaf spring installed on the main body, the leaf spring is pre-compressed between the bottom surface of the main body and the engaging portion, 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.

[0012] 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 leaf springs provided in the main body by the suspension bolts, and the leaf springs 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 leaf springs, so the leaf springs do not deform when supporting the frames, ceiling, etc. When a load exceeding this load, i.e., an external load due to vibration, etc., is applied, the leaf springs undergo compressive deformation, thereby achieving a vibration-proof effect. [Effects of the Invention]

[0013] According to the vibration-isolating sling of the present invention, by precompressing the leaf spring, the leaf spring 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 leaf spring can deform beyond the precompressed state, and can therefore exert a vibration-isolating effect.

[0014] On the other hand, with the ceiling vibration isolation structure of the present invention, the ceiling 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 leaf spring. 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]

[0015] [Figure 1] FIG. 1 is an explanatory diagram showing an outline of a ceiling vibration isolation structure. [Figure 2] FIG. 1 is an exploded perspective view showing an embodiment of a vibration-isolating hanger. [Figure 3] FIG. 3 is a longitudinal cross-sectional view of FIG. 2. [Figure 4] FIG. 1 is a perspective view showing an embodiment of a vibration-isolating hanger. [Figure 5] 4. (a) is a cross-sectional view taken along line VA-VA in FIG. 4, and (b) is a cross-sectional view taken along line VB-VB in FIG. [Figure 6] FIG. 10 is an explanatory diagram showing the state of an embodiment of the vibration-isolating sling device during operation. [Figure 7] FIG. 10 is an explanatory diagram showing the state of an embodiment of the vibration-isolating sling device during operation. DETAILED DESCRIPTION OF THE INVENTION

[0016] 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.

[0017] <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 attached to a beam A, and the figure illustrates an example in which it is attached to the flange portion of an H-shaped steel. This vibration-isolation sling 1 is equipped with a leaf spring 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 leaf spring 2 to support the suspension bolt 3. A load acting on the suspension bolt 3 acts from above on the leaf spring 2 in a state that compresses the leaf spring 2, and vibration is isolated by utilizing the compressive deformation (elastic deformation) of the leaf spring 2.

[0018] 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.

[0019] Since vibrations caused by impact noise and the like are transmitted to the ceiling F through various transmission paths, when such vibrations are transmitted, the leaf springs 2 elastically deform to absorb the vibrations. Because impact noise is known to propagate through the ceiling space (ceiling recess), 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 F.

[0020] 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.

[0021] In this way, when various frames C, E and ceilings F are supported, vibrations generated in the ceilings F are absorbed by the leaf springs 2. The vibration-isolating sling 1 used here has pre-compressed leaf springs 2, as described below. Pre-compression involves compressively deforming the leaf springs 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 leaf springs, elastic deformation due to that load is suppressed. In other words, even when the weight of normal frames C, E and ceilings F acts on the leaf springs 2, the leaf springs 2 do not deform, preventing the suspension bolts 3 from dropping. As a result, the installation state of the suspension bolts 3 remains unchanged before and after the frames C, E and ceilings F are installed, eliminating the need for subsequent position adjustments. At the same time, the suspension bolt 3 suspended via the leaf spring 2 is not biased upward by the restoring force of the leaf spring 2, and can be regarded as being installed by a non-elastic member in the installed state, thereby eliminating the need for unstable setting work due to elastic deformation.

[0022] Therefore, an embodiment of the vibration-isolating suspender 1 that enables such pre-compression will be described in detail below.

[0023] <Embodiment of vibration-proof hanging device> 2 to 5 show an outline of an embodiment of the vibration-isolating sling 1. Note that the figures show only the elements that make up the vibration-isolating sling 1, with FIG. 2 being an exploded perspective view and FIG. 3 being a longitudinal cross-sectional view of the exploded state. Also, FIG. 4 is a perspective view of the entire assembly, FIG. 5(a) is a cross-sectional view taken along line VA-VA in FIG. 4, and FIG. 5(b) is a cross-sectional view taken along line VB-VB in FIG. 4. As shown in FIG. 2, this embodiment generally comprises a main body 10, a leaf spring 2 attached to this main body 10, and a suspension bolt 3 inserted through main body 10 and connected to the leaf spring 2.

[0024] The main body 10 has a bottom 11 for mounting the leaf spring 2, and an insertion portion 12 is provided in this bottom 11 to allow the insertion of the suspension bolt 3. 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 has 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.

[0025] In this embodiment, a leaf spring 2 bent in a substantially S-shape is used as the spring body attached to the bottom 11 of the main body 10. Specifically, the leaf spring (spring body) 2 is composed of three flat areas: a lower surface portion 21 and an upper surface portion 22 arranged substantially parallel to each other, and a connecting portion 23 located between them, with curved areas 24 and 25 provided between the flat areas. By forming the leaf spring 2 in such a substantially S-shape, the upper surface portion 22 and the lower surface portion 21 can maintain a parallel state when the leaf spring 2 as a whole is compressed and deformed.

[0026] The lower surface 21 of the leaf spring 2 is provided with fixing holes 26, 27, and can be fixed with rivets 28, 29 using rivet holes 16, 17 provided in the bottom 11 of the main body 10. This is to prevent the leaf spring 2 from moving when it undergoes repeated elastic deformation.

[0027] 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 leaf spring 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 hanger B described above can be adjusted, and as a result, the joist E, ceiling F, etc. can be installed at a desired height.

[0028] Here, the main body 10 as a whole is configured with a bottom 11 and parallel wall surfaces 11a, 11b formed by bending both sides of the bottom 11, resulting in a generally U-shaped cross section. In the area where the leaf spring 2 is to be installed, the upper portions of the wall surfaces 11a, 11b are partially bent inward to form locking portions 5a, 5b. These locking portions 5a, 5b protrude inward and are generally parallel to the bottom 11, so that when the leaf spring 2 is attached to the bottom 11, they can abut against the upper surface 22 of the bottom 11.

[0029] 3, the distance H1 from the bottom 11 of the main body 10 to the locking portions 5a and 5b is set to the same height as the leaf spring 2 when it is elastically deformed by applying a predetermined compressive force to the leaf spring 2. In other words, the distance H1 from the bottom 11 to the locking portions 5a and 5b is narrower by h1 than the height H2 when the leaf spring 2 is not subjected to a compressive force (H1=H2-h1).

[0030] Therefore, when the leaf spring 2 is attached to the main body 10, the leaf spring 2 is already compressed and deformed according to the gap formed between the bottom 11 and the locking portions 5a and 5b, as shown in Figure 4. This is called pre-compression, and is a state in which a predetermined compressive force has been applied in advance.

[0031] 5, the lower surface 21 of the pre-compressed leaf spring 2 is riveted to the upper surface of the bottom 11 of the main body 10 by rivets 28, 29, and the entire surface is in close contact with the upper surface, and the upper surface 22 is also in contact with the lower surfaces of the locking portions 5a, 5b over an appropriate area. In this way, the lower surface 21 and the upper surface 22 are in contact with the bottom 11 and the locking portions 5a, 5b, respectively, while maintaining a substantially parallel state, thereby stabilizing the pre-compressed state.

[0032] The appropriate pressure for pre-compression at this time can be approximately the same as (slightly greater than) the total weight W of the components supporting the ceiling, etc. F. By assuming this level of pressure, the leaf spring 2 will be installed in the main body 10 without undergoing compressive deformation when these components are attached. Therefore, during installation of the ceiling, etc. F, no compressive load exceeding the weight W will act (no vibration will be transmitted), so the pre-compressed leaf spring 2 will not deform, and the positions of each component will be stable, just like in installation using non-elastic components.

[0033] <Operation mode> Next, the operation of the above embodiment will be described with reference to Figures 5 to 7. First, since this embodiment is configured as described above, when a ceiling or the like is simply installed, the upper surface 22 of the leaf spring 2 remains locked by the locking portions 5a and 5b, as shown in Figure 5, and the leaf spring 2 does not undergo compressive deformation beyond this state. In this state, under normal conditions (when vibrations are not transmitted), only the weight W of the ceiling or the like acts on the suspension bolt 3, and the leaf spring 2 does not undergo compressive deformation.

[0034] In this normal state, when vibrations are transmitted, the ceiling or the like will vibrate up and down, and the weight of the ceiling or the like at that time will be transmitted to the suspension bolts 3. At this time, if the vibration of the ceiling or the like is upward, the load acting on the suspension bolts 3 will be reduced, so the deformation of the leaf springs 2 will be within the pre-compressed range, and the suspension bolts 3 will not rise and will not change from their normal state.

[0035] In contrast, as shown in Figure 6, when the vibration of the ceiling or the like is downward, the load (W + α) acting on the hanging bolt 3 increases, and the hanging bolt 3 is pulled downward with a strong force, which results in the upper surface 22 of the leaf spring 2 being pressed downward (in the compression direction) via the female thread portion (pop nut) 4 on which the hanging bolt 3 is supported.

[0036] At this time, the leaf spring 2, with its upper surface 22 pressed downward, contracts as a whole (changing the curvature of the curved region), undergoing compressive deformation. This compressive deformation causes the upper surface 22 of the leaf spring 2 to be released from the engagement by the engagement portions 5a and 5b and to drop below the engagement portions 5a and 5b, creating a gap h2 between them. Even with this compressive deformation, the upper surface 22 remains parallel to the lower surface 21. This is because the leaf spring 2 is configured in a generally S-shape, allowing compressive deformation by changing the curvature of the curved region.

[0037] When the downward pressure is released, the compressed and deformed leaf spring 2 rises again while the upper surface 22 moves in parallel, returning to its original normal state where it is locked by the locking portions 5a and 5b. Vibrations of the ceiling or the like repeatedly exert a weight (W+α) on the suspension bolt 3, causing the lifted suspension bolt 3 to descend again, compressing and deforming the leaf spring 2 as described above. However, the upward movement of the suspension bolt 3 does not exceed the return to its normal state as described above, and the load in the upward direction is absorbed by the beam material via the main body 10 of the vibration-proof suspension device 1. Therefore, the repeated lifting and lowering of the suspension bolt 3 as described above gradually converges.

[0038] Furthermore, because the state of vibrations received by the ceiling, etc. is not constant, when the ceiling, etc., vibrates significantly, the amplitude of the vertical movement of the ceiling, etc. (hanging bolts 3) will differ. Therefore, when the ceiling, etc., rises or falls more significantly than the above (Fig. 6), the leaf springs 2 will be significantly compressed and deformed when the hanging bolts 3 are lowered, depending on the amplitude, as shown in Fig. 7.

[0039] Even in such a case, the leaf spring 2 is only significantly compressed and deformed in accordance with the load (W+β) acting on the hanging bolt 3, and the gap h3 formed between the upper surface portion 22 and the engaging portions 5a, 5b becomes larger.

[0040] When the leaf spring 2 is significantly compressed and deformed, part of the female thread portion (pop nut) 4 on the top surface portion 22 approaches the connecting portion 23. However, as shown in FIG. 7(b), by configuring the through hole 42 in this connecting portion 23 with an appropriate diameter, part of the pop nut 4 can be loosely inserted inside the through hole 42.

[0041] <Summary> As described above, according to the above embodiment, the leaf spring 2 is attached to the main body 10 in a pre-compressed state, so that in a normal state, even if only the weight (W) of the ceiling or the like acts as a load on the hanging bolt 3, the leaf spring 2 does not elastically deform, and in this state, it is no different from a state constructed solely from inelastic material. Therefore, the leaf spring (spring body) 2 does not repeatedly elastically deform and cause the installation position on the ceiling or the like to become unstable.

[0042] On the other hand, when the ceiling or the like vibrates, a load (W+α or W+β) that exceeds the weight (W) of the ceiling or the like acts on the plate spring 2, and the vibration is absorbed and converged while elastically deforming the plate spring 2.

[0043] 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.

[0044] For example, in the above embodiment, the configuration of the locking portions 5a, 5b is exemplified as a configuration in which a portion of the wall portion 11a, 11b of the main body portion 10 is bent inward, but these locking portions 5a, 5b may also be configured by fixing another member to the wall portion 11a, 11b by welding or the like.

[0045] Furthermore, although a pop nut is used as the female thread portion 4, it is not limited to this and any material that can support the suspension bolt 3 will do. In particular, when using a pop nut, the purpose is to make it possible to adjust the support state (installation height) of the suspension bolt 3 by rotating the suspension bolt 3, so a configuration in which the nut is welded to the upper surface portion 22 of the leaf spring 2 may also be used. [Explanation of symbols]

[0046] 1 Anti-vibration sling 2 Leaf spring (spring body) 3 Hanging bolt 4 Female thread (Pop nut) 5,5a,5b Locking part 10 Main body of vibration isolation sling 11 Bottom of the main body 11a, 11b Wall portion of 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 Rivet holes 21 Lower surface of leaf spring 22 Top surface of leaf spring 23 Leaf spring connection 24,25 Curved area 26,27 Fixing holes (for rivets) 28,29 Rivets 41, 42, 43 Leaf spring through hole (leaf spring insertion part) W Normal load (weight of frames and ceiling, etc.) α,β 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 through a portion of the main body; a spring body attached to the main body portion, supporting the suspension bolt while absorbing vibrations acting on the suspension bolt; The spring body is a flat spring having at least a lower surface portion and an upper surface portion that are substantially parallel to each other and an S-shaped cross section having a connecting portion in the middle, the main body includes a bottom surface portion for mounting the lower surface portion of the leaf spring, an insertion portion through which the suspension bolt is inserted at an appropriate location on the bottom surface portion, and a locking portion for locking the upper surface portion of the leaf spring; The leaf spring has through holes in the upper surface portion, the lower surface portion, and the connecting portion to allow the insertion of a suspension bolt, and the upper surface portion has a female screw portion for connecting to the suspension bolt. The leaf spring is compressed between the bottom surface portion of the main body and the locking portion, and is attached in a state that can be considered to be the same as if it were installed by a non-elastic member in an installed state. The suspension bolt is inserted through an insertion portion provided on the bottom surface of the main body and a through portion of the leaf spring, and is supported by the female thread portion.

2. 2. The vibration-isolating sling according to claim 1, wherein the main body comprises an insertion portion that allows the beam to be inserted therein, and a threaded portion that clamps the beam inserted into the insertion portion.

3. 3. The vibration-isolating sling according to claim 1, wherein the female thread provided on the upper surface of the leaf spring is formed by a pop nut that is attached to a through hole in the upper surface.

4. A ceiling vibration isolation structure using the vibration isolation hanger according to any one of claims 1 to 3, The main body portion is engaged with the beam material, The suspension bolt is screwed into a female screw portion provided on an upper surface of the leaf spring installed in the main body portion, The leaf spring is compressed between the bottom surface of the main body and the locking portion, and in an installed state, the leaf spring is in a state that can be regarded as being installed by a non-elastic 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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