JP2013160349A - Vibration isolation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolation device configured to reduce vibration generated from a target device by a compact device which is short in a contraction direction of a spring.SOLUTION: A vibration isolation device 1 includes a plurality of elastic bodies S and a connecting member 4 for connecting the plurality of elastic bodies S in series. One end portion of the plurality of elastic bodies S connected in series by the connecting member 4 is installed on a foundation 3. A target device 2 is supported in the other end portion, to reduce vibration. The plurality of elastic bodies S are disposed in parallel in a second direction D2 orthogonal to a first direction D1, which is directed from the foundation 3 to the target device 2. Regarding the plurality of elastic bodies S disposed in parallel, the connecting member 4 supports a foundation-side end of one elastic body from an end of the target device side of the other elastic body S, a free end of an elastic body positioned in the one end portion is used as an installation end V1 to be installed in the foundation 3, and a free end of an elastic body positioned in the other end portion is used as a support end V2 supporting the target device 2.

Description

  The present invention comprises a plurality of elastic bodies and a connection member that connects the plurality of elastic bodies in series, and is installed on the basis of one end of the plurality of elastic bodies connected in series by the connection member, The present invention relates to a vibration isolator that reduces vibration by supporting a vibration isolation target device at the other end.

  As a conventional anti-vibration device, for example, Patent Document 1 discloses an anti-vibration device composed of two anti-vibration units stacked in two upper and lower stages. It is composed of a bellows-like air spring that is horizontally disposed between an upper plate and a lower plate that are parallel to each other, and an upper second vibration isolating portion is disposed horizontally and is parallel to each other. It consists of a plurality of compression coil springs arranged vertically with the lower plate. Then, the lower plate of the upper second anti-vibration part and the upper plate of the lower first anti-vibration part are connected to form an anti-vibration device having an upper and lower two-stage structure.

  Thus, by making the vibration isolator a two-stage structure, the air spring in the first vibration isolator and the coil spring in the second vibration isolator are connected in series, and the vertical spring As a structure in which the constant can be lowered and the vibration isolator swings at a low frequency, high frequency vibrations generated from the vibration isolation target apparatus are reduced.

JP 2007-71348 A

When trying to use a vibration isolator as described above, it is generally assumed that the frequency of the device subject to vibration isolation is constant, and the frequency generated by the device in response to the load changes In addition, when a base with multiple devices is vibration-isolated with the same anti-vibration device, the devices that generate vibration resonate with each other. This causes a problem that the frequency f cannot be determined.
Here, if the frequency generated by the device changes according to the load, the target seismic power F must be designed excessively. In this case, the natural frequency is inevitably reduced, thereby preventing vibration. Considering the weight of equipment that generates vibration and the spring constant k of the device is small, the vibration isolation device is very vertically long. When installing the device in a package, the installation space, fixing method, and lack of stability There is. In addition, if many anti-vibration devices having a small spring constant are used, the total spring constant kt becomes excessively large, which causes a problem that cannot be dealt with.
In addition, when the frequency f unique to the device (or device system) that is the object of vibration isolation cannot be determined, there is the same problem, so that a vibration isolation device for each device is required, and the total resonance frequency is also There is still a problem that is not economical because it needs to be considered.

Under such circumstances, the vibration isolator disclosed in Patent Document 1 can realize a vibration isolator having a small spring constant by connecting the springs in series. However, in the vibration isolator described in Patent Document 1, the air spring of the first vibration isolator and the second vibration isolator as a structure in which the first vibration isolator and the second vibration isolator are connected in series. Since the coil springs are arranged in a line in the vertical direction, the vibration isolator has a shape with a long dimension in the vertical direction, which is the contraction direction of those springs, and a relatively large installation space for installing it. There is still a problem that is necessary.
In addition, when the vibration isolator has a shape having a long dimension in the vertical direction in this way, the installation position of the vibration isolator target device becomes high, and thus there is a problem that the installation state is not stable.

  The present invention has been proposed on the basis of the above-described conventional circumstances, and can be used to reduce vibrations generated from a vibration-proof target device by a compact device in which the size of the spring in the contraction direction is short. An object is to provide an apparatus.

In order to achieve the above object, the vibration isolator according to the present invention comprises:
A plurality of elastic bodies, and a connection member for connecting the plurality of elastic bodies in series,
A vibration isolator that installs on the basis of one end of a plurality of elastic bodies connected in series by the connecting member and supports the vibration isolation target device at the other end to reduce vibration,
The plurality of elastic bodies are arranged in parallel in a second direction that is a direction orthogonal to a first direction that is a direction from the foundation toward the vibration isolation target device,
With respect to the plurality of elastic bodies arranged in parallel, the connection member is configured to support the base side end of one elastic body from the vibration-proof target device side end of the other elastic body,
The free end of the elastic body located at the one end is an installation end that is installed on the foundation,
The free end of the elastic body located at the other end is a support end that supports the vibration-proof target device.

According to the above characteristic configuration, the plurality of elastic bodies are arranged in parallel in the second direction, which is a direction orthogonal to the first direction, which is the direction from the foundation toward the vibration isolation target device, and the connection member has a single elastic foundation. It is set as the structure which supports a side end from the vibration-proof object apparatus side end of another elastic body. In other words, the first direction from the foundation toward the vibration-proof target device is set as the contraction direction of the elastic body, and the elastic bodies are connected in series in the second direction orthogonal to the direction. Therefore, the elastic constant of the elastic body can be reduced by reducing the spring constant of the elastic body to reduce the vibration generated from the device subject to vibration isolation. The dimension of the first direction, which is called the connecting elastic body, can be shortened to form a compact device configuration, and the apparatus can be installed in a limited installation space.
Furthermore, the free end of the elastic body located at one end of the plurality of elastic bodies connected in series is used as an installation end to be installed on the basis, and the free end of the elastic body located at the other end is used as the vibration isolation target device. Since the end of the connecting elastic body is installed on the foundation and the dimension in the first direction of the connecting elastic body is short as described above, the vibration isolation target device is It can be supported at a position close to the foundation, and the vibration-proof target device can be supported in a stable state.

Further features of the vibration isolator according to the present invention are as follows:
The plurality of elastic bodies are composed of a plurality of ring-shaped elastic bodies having different diameters,
The connection member supports the ring-shaped elastic body on the center side, and the base-side end of the ring-shaped elastic body located on the center side from the vibration-proof object side end of the ring-shaped elastic body located on the outer diameter side. A plurality of ring-shaped connecting members,
The installation end is a base side end of a ring-shaped elastic body on the outermost diameter side among the plurality of ring-shaped elastic bodies;
The support end is a vibration-proof device side end of the innermost ring-shaped elastic body among the plurality of ring-shaped elastic bodies.

According to the above characteristic configuration, the plurality of elastic bodies are composed of a plurality of ring-shaped elastic bodies having different diameters, so that the outer diameter side of the ring-shaped elastic body is covered with another ring-shaped elastic body having a larger diameter. Since the plurality of ring-like elastic bodies can be arranged concentrically in parallel with each other, the vibration isolator can be configured compactly. And since the ring-shaped elastic bodies arranged in parallel in this way can be connected in series by a plurality of ring-shaped connecting members, the spring constant of the connecting elastic bodies by the ring-shaped elastic bodies can be reduced and the vibration-proof target device The generated vibration can be reduced.
In addition, the load of the vibration-proof target device received at the vibration-proof target device-side end of the innermost ring-shaped elastic member as the support end is sequentially transmitted to the larger-diameter ring-shaped elastic member located on the outer diameter side. And transmitted to the largest ring-shaped elastic body on the outermost diameter side. And since the ring-shaped elastic body on the outermost diameter side is installed and supported on the foundation at the end on the foundation side, the vibration isolation target device is supported in a stable state, and vibration generated from the vibration isolation target device is reduced. can do.

Further features of the vibration isolator according to the present invention are as follows:
As the connecting member,
A support bottom portion that supports the base side end of the ring-shaped elastic body on the innermost diameter side, a cylindrical portion that extends from a peripheral portion of the support bottom portion to the vibration isolation target device side, and a vibration isolation target device side of the cylindrical portion A first connecting member provided with an extending edge portion extending to the outer diameter side at the peripheral portion of the end;
A support edge portion that supports the base side end of the ring-shaped elastic body other than the innermost diameter side, a cylindrical portion that extends from the peripheral portion of the support edge portion toward the vibration isolation target device, and the vibration isolation of the cylindrical portion And a second connecting member provided with an extending edge portion extending to the outer diameter side at the peripheral portion of the target device side end.

  According to the above characteristic configuration, the vibration transmitted from the ring-shaped elastic body to the support bottom portion of the first connection member and the support edge portion of the second connection member can be transmitted to the extension edge portion via the tubular portion. The vibration can be transmitted from the extended edge portion to the ring-shaped elastic body provided on the outer diameter side. Thereby, vibration is reliably transmitted to the plurality of ring-shaped elastic bodies, and the vibration can be reduced by the plurality of ring-shaped elastic bodies. In addition, the cylindrical portion is positioned between the ring-shaped elastic bodies arranged in parallel concentrically, and the ring-shaped elastic bodies are brought into contact with each other by deformation generated by contraction and vibration of the plurality of ring-shaped elastic bodies. Can be prevented. Thereby, a plurality of ring-shaped elastic bodies connected in series in a state of being arranged in parallel operate smoothly without being in contact with each other, and vibration generated in the image stabilization target apparatus can be reliably reduced.

Further features of the vibration isolator according to the present invention are as follows:
The natural lengths of the plurality of elastic bodies are the same,
The position of the base side end and the vibration-proof object apparatus side end in the 1st direction of the said connection member provided in multiple numbers exists in the point which is the same between connection members, respectively.

  According to the above characteristic configuration, the natural lengths of the plurality of elastic bodies are the same, and the positions of the base side end and the vibration isolation target device side end in the first direction of the plurality of connection members are configured to be the same. There is no variation in the installation position in the direction from the foundation of the elastic body and the connection member toward the vibration isolation target device, and as a result, in the direction from the foundation necessary for installation of the vibration isolation device to the vibration isolation target device. The dimensions can be made compact.

Further features of the vibration isolator according to the present invention are as follows:
The support bottom position of the first connecting member is provided with a support end position adjusting mechanism for adjusting the position in the first direction of the vibration-proof target device side end of the innermost ring-shaped elastic body supported from the support bottom. It is in.

  According to the above characteristic configuration, the position of the vibration-proof target device side end of the ring-shaped elastic body on the innermost diameter side is moved to the vibration-proof target device side by the support end position adjusting mechanism provided at the support bottom of the first connecting member. By doing so, it is possible to move the image stabilization target device supported by the image stabilization target device side end in a direction away from the image stabilization target device side end of the connection member. As a result, it is possible to prevent the vibration isolation target device and the connection member from contacting each other due to the movement of the connection member accompanying the contraction of the plurality of ring-shaped elastic bodies due to the load of the vibration isolation target device.

Further features of the vibration isolator according to the present invention are as follows:
In the installation state on the foundation, a foundation end position adjusting mechanism for adjusting the position of the installation end in the first direction is provided.

  According to the above-described characteristic configuration, the separation distance between the foundation and the vibration isolation target device can be adjusted by the foundation end position adjustment mechanism in a state where the foundation is installed on the foundation. The movement of the connecting member can prevent the foundation and the connecting member from contacting each other.

Further features of the vibration isolator according to the present invention are as follows:
An outer frame member including a bottom surface portion supporting a base side end of the ring-shaped elastic body on the outermost diameter side and a cylindrical outer peripheral portion extending from an outer periphery of the bottom surface portion toward the vibration isolation target device;
A relative position adjustment mechanism is provided between the outer frame member and a foundation fixing member fixedly connected to the foundation, whereby the foundation end position adjustment mechanism is configured.

  According to the above characteristic configuration, the base end position adjusting mechanism is configured by providing the relative position adjusting mechanism between the outer frame member and the base fixing member fixedly connected to the base. In the state where it is fixedly connected to the base, it is possible to easily adjust the separation distance between the foundation and the image stabilization target device by the relative position adjustment mechanism.

Further features of the vibration isolator according to the present invention are as follows:
The spring constants of the plurality of elastic bodies are the same.

  According to the above characteristic configuration, since the spring constants of the plurality of elastic bodies are the same, even when the plurality of elastic bodies receive a load from the vibration isolation target device, the load is uniformly received by the entire connected elastic body. Thus, the contraction rate of the respective elastic bodies can be made the same, and the vibration can be reduced while maintaining the state in which the entire connecting elastic body functions as an elastic body.

In order to achieve the above object, the vibration isolating method according to the present invention includes:
Between the foundation and the anti-vibration target device, equipped with any of the above-described anti-vibration devices,
It is in the point which suppresses the vibration which generate | occur | produces in the said vibration proof object apparatus.

  According to the above characteristic configuration, since any one of the above-described vibration isolating devices is provided between the foundation and the image stabilization target device, it is possible to achieve the effects of the vibration isolating devices described so far.

It is a figure which shows the use condition of the vibration isolator of this invention. It is the schematic which shows the internal structure of the vibration isolator of this invention.

  Embodiments of the vibration isolator according to the present invention will be described below with reference to the drawings. FIG. 1 shows a use state of the vibration isolator 1 of the present invention. The vibration isolator 1 is a vibration isolation target device that generates vibrations having a plurality of frequencies. For example, the outer shape of the vibration isolator 1 is a rectangular parallelepiped between the fuel cell 2 and the foundation 3 on which the fuel cell 2 is installed. The fuel cell 2 is provided at each of the four corners of the bottom surface 2a. As a result, the fuel cell 2 is configured to absorb and reduce it on the vibration side having a small frequency. Examples of the vibration source in the fuel cell 2 include a pump (not shown) for supplying fuel and air to the fuel cell in the fuel cell 2 and a blower.

  As shown in FIG. 1, the vibration isolator 1 is fixed to the foundation 3 by passing a fixing screw 9 through a foundation fixing member 8 provided in the vibration isolator 1. Moreover, the fuel cell 2 is installed in a state where the four corners of the bottom surface 2a are mounted on the device mounting portion 10 provided near the center of the vibration isolator 1 in a top view.

FIG. 2 shows an internal configuration of the vibration isolator 1 according to the present embodiment.
The vibration isolator 1 includes a plurality of coil springs S (corresponding to an elastic body and a ring-shaped elastic body) and a ring-shaped connection member 4 (corresponding to a connection member) that connects the plurality of coil springs S in series. Yes.
And the connection elastic body V is comprised by the some coil spring S connected in series by the ring-shaped connection member 4, The base end position adjustment which mentions the foundation side end (equivalent to one edge part) of the connection elastic body V later While being installed on the foundation 3 via the mechanism Y, the fuel cell 2 is supported by the device side end portion (corresponding to the other end portion) via the device mounting portion 10 to reduce vibration.

  As shown in FIG. 2, the plurality of coil springs S are arranged in parallel in a second direction D <b> 2 that is a direction orthogonal to the first direction D <b> 1 that is a direction from the foundation 3 toward the fuel cell 2. . Specifically, it is composed of a plurality of coil springs S having different diameters, and is arranged in parallel concentrically in a state where the outer diameter side of the small-diameter coil spring S is covered with the larger-diameter coil spring S. ing.

And by the some ring-shaped connection member 4 which supports the base side end of the coil spring S located in the center side from the apparatus side end (equivalent to the vibration-proof object apparatus side end) of the coil spring S located in the outer diameter side. A plurality of coil springs S are connected to form a connected elastic body V.
Further, the installation end V1 installed on the foundation 3 via the foundation end position adjusting mechanism Y is the foundation side end of the outermost diameter side coil spring S of the connecting elastic bodies V constituted by a plurality of coil springs S, A support end V <b> 2 that supports the fuel cell 2 via the apparatus mounting portion 10 is an apparatus side end of the coil spring S on the innermost diameter side among the connecting elastic bodies V configured by a plurality of coil springs S.

  By configuring the vibration isolator 1 in this way, the connecting elastic body V of the coil spring S contracts in the first direction D1, which is the direction from the foundation 3 toward the fuel cell 2, and from the foundation 3 to the fuel cell 2. Compared with the case where a plurality of coil springs S are arranged in series in the direction of the height, the dimension in the height direction from the foundation 3 of the vibration isolator 1 toward the fuel cell 2 can be shortened, and the limited height dimension The vibration isolator 1 can also be installed in the installation space.

  The plurality of coil springs S will be described. The plurality of coil springs S have the same natural length, and the positions of the base-side end and the vibration-proof target device-side end in the first direction D1 of the plurality of ring-shaped connection members 4 provided are the ring-shaped connection members 4. Are configured to be the same. Thereby, the installation position in the direction which goes to the fuel cell 2 from the foundation 3 of each ring-shaped connection member 4 is made the same, and the vibration isolator 1 can be comprised compactly.

  Further, the plurality of coil springs S are configured to have the same spring constant. Thereby, when a plurality of elastic bodies receive a load from the vibration isolation target device, the contraction rate of each coil spring S becomes substantially the same, so when the vibration isolation device 1 receives a load from the fuel cell 2, Since the plurality of coil springs S receive the load evenly and contract evenly, as a result, the size of the sinking of the vibration isolator 1 can be reduced.

Here, generally, when the three coil springs S are connected in series as in this example, the overall spring constant kt when a plurality of coil springs S are connected in series is ka, kb, kc, respectively. Then, it is represented by the following formula (1).
1 / kt = 1 / ka + 1 / kb + 1 / kc (1)
When the spring constants of the plurality of coil springs S are the same as the spring constant ka as in this embodiment, the overall spring constant kt when the plurality of coil springs S are connected in series from the above equation (1) is Kt = (1/3) ka, so that the spring constant of the coil spring S can be set to 1/3. That is, when N coil springs S are connected in series in the vibration isolator 1, the overall spring constant kt of the connecting elastic body V by the plurality of coil springs S is (1 / N) of the spring constant ka of the single coil spring S. Can be doubled.

  Thus, since the overall spring constant can be made extremely small by using a plurality of coil springs S, the natural frequency of the vibration isolator 1 can be suppressed to be extremely small and is provided in the fuel cell 2. In addition to vibrations of different frequencies generated from a pump or the like, vibrations caused by resonance of a low frequency generated by devices that generate vibrations such as a pump can be reduced. In addition, since the overall spring constant is made extremely small, it has an anti-vibration effect in a wide frequency range, so even if the frequency of the fuel cell 2 that generates vibration changes, those vibrations are reduced on the low frequency side. Can be reduced.

Next, the ring-shaped connection member 4 that connects the coil springs S will be described in more detail. In the vibration isolator 1, a first connection member 41 and a second connection member 42 are provided as the ring-shaped connection member 4.
The first connection member 41 includes a support bottom portion 41a that supports the base side end of the coil spring S on the innermost diameter side, a tubular portion 4b that extends from the peripheral portion of the support bottom portion 41a toward the vibration isolation target device, and a tubular shape. An extended edge portion 4c extending to the outer diameter side at the periphery of the vibration-proof target device side end of the portion 4b is configured.
And the 2nd connection member 42 is from the periphery of this support edge 42a like the above-mentioned 1st connection member 41 and the support edge 42a which supports the foundation side end of coil springs S other than the innermost diameter side. A cylindrical portion 4b extending toward the image stabilization target device side and an extending edge portion 4c extending toward the outer diameter side at the periphery of the vibration isolation target device side end of the cylindrical portion 4b are configured.

  Thereby, the vibration transmitted from the coil spring S to the support bottom 41a or the support edge 42a can be transmitted to the extension edge 4c via the cylindrical part 4b, and further from the extension edge 4c. Vibration can be transmitted to a plurality of coil springs S provided on the outer diameter side. Further, the cylindrical portion 4b prevents the plurality of coil springs S arranged in parallel from contacting each other due to the deformation caused by the contraction and vibration of the plurality of coil springs S, and smoothly operates the plurality of coil springs S, thereby fuel cell. 2 can be reliably reduced.

The support bottom 41a of the first connection member 41 is provided with a support end position adjusting mechanism W that adjusts the position of the device side end of the coil spring S on the innermost diameter side supported by the support bottom 41a in the first direction D1. ing. The support end position adjusting mechanism W includes a coil spring support plate 5 that supports the innermost coil spring S on the support bottom 41a of the first connection member 41, and a push-up screw that pushes the coil spring support plate 5 toward the fuel cell 2 side. 6.
As a result, by moving the innermost coil spring S toward the fuel cell 2, the fuel cell 2 placed on the device placement part 10 moves in a direction away from the ring-shaped connecting member 4. Due to the movement of the ring-shaped connecting member 4 due to the contraction of the spring S, it is possible to prevent the fuel cell 2 from coming into contact with the extended edge portion 4 c located at the apparatus-side end of the ring-shaped connecting member 4.

  Further, the vibration isolator 1 includes a foundation end position adjusting mechanism Y that adjusts the position of the installation end V1 in the first direction D1 in the installation state installed on the foundation 3. The foundation end position adjusting mechanism Y includes a bottom surface portion 7a that supports the foundation side end of the coil spring S on the outermost diameter side, and a cylindrical outer periphery portion 7b that extends from the outer periphery of the bottom surface portion 7a to the vibration isolation target device side. An outer frame member 7, a foundation fixing member 8 fixedly connected to the outer frame member 7 and the foundation 3, and a relative position adjusting mechanism Z provided between the outer frame member 7 and the foundation fixing member 8. Configured.

  The relative position adjusting mechanism Z is threaded into the outer peripheral threaded portion 7c of the outer frame member 7 by processing the outer peripheral threaded portion 7c processed into the cylindrical outer peripheral portion 7b of the outer frame member 7 and the inner peripheral surface of the foundation fixing member 8. And an inner peripheral screw portion 8a. The relative position adjusting mechanism Z is a helicoid mechanism capable of adjusting the separation distance between the outer frame member 7 and the foundation 3 in the first direction D1 by rotating the outer frame member 7, and thereby the fuel cell. The distance between the base 2 and the foundation 3 in the first direction D1 can be adjusted. Thereby, it is possible to prevent the base side end of the ring-shaped connecting member 4 from coming into contact with the base 3 due to the movement of the ring-shaped connecting member 4 due to the contraction of the coil spring S.

  Further, for example, even when the center of gravity of the fuel cell 2 in FIG. 1 is unevenly distributed and the height of the installation position of the vibration isolator 1 on the bottom surface 2a is different, the respective anti-vibration devices provided at the four corners of the bottom surface 2a. The fuel cell 2 can be adjusted to a predetermined posture by adjusting the relative position adjustment mechanism Z of the vibration device 1.

The base fixing member 8 is provided with a fixing screw 8b for fixing the rotation of the outer frame member 7, whereby the outer frame member 7 is rotated by the vibration of the fuel cell 2 after adjusting the separation distance. Can be fixed so as not to.
[Another embodiment]

In the above embodiment, the coil spring S is used as the elastic body. However, the present invention is not limited to this, and natural rubber, synthetic rubber, elastic synthetic resin, or the like may be used as the elastic body.
In a structure that employs natural rubber, synthetic rubber, synthetic resin, or the like instead of the coil spring S, cylindrical natural rubber, synthetic rubber, synthetic resin, or the like is employed instead of the coil spring S positioned on the innermost diameter side. Alternatively, it may be configured in a cylindrical shape.

  In the above embodiment, the plurality of coil springs S are configured so that the natural lengths of the spring constants are the same. However, the present invention is not limited thereto, and the natural lengths of the plurality of coil springs S are configured as different natural lengths. Also good.

  In the above embodiment, the plurality of coil springs S are configured to have the same spring constant. However, the present invention is not limited thereto, and each of the plurality of coil springs S may be configured as a different spring constant.

  In the above-described embodiment, the fuel cell 2 is supported in a state of being placed on the device mounting portion 10. However, the present invention is not limited thereto, and the fuel cell 2 and the device mounting portion 10 are fixed with a fixing screw or the like. You may support.

  In the above embodiment, the relative position adjusting mechanism Z is threaded into the outer peripheral threaded portion 7c of the outer frame member 7 by processing the outer peripheral threaded portion 7c processed into the outer frame member 7 and the inner peripheral surface of the foundation fixing member 8. However, the outer frame member 7 can be slid in the first direction D1 with respect to the base fixing member 8 without providing the outer peripheral screw portion 7c and the inner peripheral screw portion 8a. It may be a slide type.

  As described above, it is possible to provide a vibration isolator capable of reducing the vibration generated from the vibration isolation target device by a compact device in which the dimension in the contraction direction of the spring is shortened.

1: Anti-vibration device 2: Fuel cell (anti-vibration target device)
3: Foundation 4: Ring-shaped connection member (connection member)
4b: cylindrical portion 4c: extended edge portion 7: outer frame member 7a: bottom surface portion 7b: cylindrical outer peripheral portion 41: first connection member 41a: support bottom portion 42: second connection member 42a: support edge portion S: coil Spring (elastic body, ring-shaped elastic body)
V1: installation end V2: support end W: support end position adjustment mechanism Y: base end position adjustment mechanism Z: relative position adjustment mechanism

Claims (9)

A plurality of elastic bodies, and a connection member for connecting the plurality of elastic bodies in series,
A vibration isolator that installs on the basis of one end of a plurality of elastic bodies connected in series by the connecting member and supports the vibration isolation target device at the other end to reduce vibration,
The plurality of elastic bodies are arranged in parallel in a second direction that is a direction orthogonal to a first direction that is a direction from the foundation toward the vibration isolation target device,
With respect to the plurality of elastic bodies arranged in parallel, the connection member is configured to support the base side end of one elastic body from the vibration-proof target device side end of the other elastic body,
The free end of the elastic body located at the one end is an installation end that is installed on the foundation,
An anti-vibration device having a free end of an elastic body positioned at the other end as a support end that supports the anti-vibration target device. The plurality of elastic bodies are composed of a plurality of ring-shaped elastic bodies having different diameters,
The connection member supports the ring-shaped elastic body on the center side, and the base-side end of the ring-shaped elastic body located on the center side from the vibration-proof object side end of the ring-shaped elastic body located on the outer diameter side. A plurality of ring-shaped connecting members,
The installation end is a base side end of a ring-shaped elastic body on the outermost diameter side among the plurality of ring-shaped elastic bodies;
2. The vibration isolator according to claim 1, wherein the support end is a vibration-proof target device side end of a ring-shaped elastic body on the innermost diameter side among the plurality of ring-shaped elastic bodies. As the connecting member,
A support bottom portion that supports the base side end of the ring-shaped elastic body on the innermost diameter side, a cylindrical portion that extends from a peripheral portion of the support bottom portion to the vibration isolation target device side, and a vibration isolation target device side of the cylindrical portion A first connecting member provided with an extending edge portion extending to the outer diameter side at the peripheral portion of the end;
A support edge portion that supports the base side end of the ring-shaped elastic body other than the innermost diameter side, a cylindrical portion that extends from the peripheral portion of the support edge portion toward the vibration isolation target device, and the vibration isolation of the cylindrical portion The anti-vibration device according to claim 2, further comprising a second connecting member including an extending edge portion extending toward the outer diameter side at a peripheral portion of the target device side end. The natural lengths of the plurality of elastic bodies are the same,
The anti-vibration device according to claim 3, wherein the plurality of connecting members provided at the base side end and the anti-vibration target device side end in the first direction are the same between the connecting members.   A support end position adjusting mechanism that adjusts a position in a first direction of a vibration-proof target device side end of the ring-shaped elastic body on the innermost diameter side supported from the support bottom portion on the support bottom portion of the first connection member. Item 5. The vibration isolator according to item 3 or 4.   The vibration isolator according to any one of claims 2 to 5, further comprising a foundation end position adjusting mechanism that adjusts a position of the installation end in the first direction in the installation state on the foundation. An outer frame member including a bottom surface portion supporting a base side end of the ring-shaped elastic body on the outermost diameter side and a cylindrical outer peripheral portion extending from an outer periphery of the bottom surface portion toward the vibration isolation target device;
The vibration isolator according to claim 6, wherein a relative position adjustment mechanism is provided between the outer frame member and a foundation fixing member fixedly connected to the foundation to constitute the foundation end position adjustment mechanism.   The vibration isolator according to any one of claims 1 to 7, wherein the plurality of elastic bodies have the same spring constant. Between the foundation and the vibration isolation target device, the vibration isolation device according to any one of claims 1 to 8 is provided,
A vibration isolation method for suppressing vibration generated in the vibration isolation target device.

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