JP6918644B2 - Vibration damping device - Google Patents

Description

The present invention relates to a vibration damping device.

For example, as a vibration damping device for a building, a leaf spring type vibration damping device described in Patent Document 1 is known. The vibration damping device includes a leaf spring member whose one end is fixed to the vibration damping target and the other end is fixed to the mass. Further, the vibration damping device includes a viscoelastic body fixed to the mass side of the leaf spring member. The viscoelastic body is provided so as to come into contact with the vibration damping target. This viscoelastic body applies an impact force or a pressing force to the vibration damping target by vibrating the mass with the vibration of the vibration damping target. In this way, the vibration damping device makes the leaf spring and the spring made of the viscoelastic body function in a complex manner.

Japanese Patent No. 5386209

An object of the present invention is to provide a vibration damping device capable of enhancing a vibration damping effect by a configuration different from that of a conventional vibration damping device.

One aspect of the present invention is
With trout
A plate-shaped first mounting member attached to the vibration damping target, a plate-shaped second mounting member attached to the mass, and a viscoelastic body fixed over the first mounting member and the second mounting member. When,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. and interposed member located position,
Equipped with a,
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
The intervening member is an integral member with a first mounting bolt for mounting the first mounting member on the vibration damping target, or a second mounting bolt for fixing the mass and the second mounting member. , In the control device .
Another aspect of the present invention is
With trout
A plate-shaped first mounting member to be mounted on the vibration damping target,
A plate-shaped second mounting member to be mounted on the mass,
Two viscoelastic bodies fixed over the first mounting member and the second mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
The two intervening members are located in a vibration damping device, which is arranged on a straight line connecting the two viscoelastic bodies and is arranged on both outer sides of the two viscoelastic bodies.
In addition, another aspect of the present invention is
With trout
A plate-shaped first mounting member to be mounted on the vibration damping target,
A plate-shaped second mounting member to be mounted on the mass,
Two viscoelastic bodies fixed over the first mounting member and the second mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
The two intervening members are in a vibration damping device that is arranged on a straight line connecting the two viscoelastic bodies and is arranged inside the two viscoelastic bodies.

Another aspect of the present invention is
With trout
One plate-shaped first mounting member to be mounted on the vibration damping target,
Two plate-shaped second mounting members to be mounted on the mass,
Two viscoelastic bodies fixed over the first mounting member and the second mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
One of the viscoelastic bodies is fixed over the first mounting member and the second mounting member.
The other viscoelastic body is fixed over the first mounting member and the other second mounting member.
One of the intervening members is interposed between the mass and the other second mounting member.
The other intervening member is in a vibration damping device interposed between the mass and the other second mounting member.
In addition, another aspect of the present invention is
With trout
Two plate-shaped first mounting members to be mounted on the damping target,
One plate-shaped second mounting member to be mounted on the mass,
Two viscoelastic bodies fixed over the first mounting member and the second mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
One of the viscoelastic bodies is fixed over one of the first mounting members and the second mounting member.
The other viscoelastic body is fixed over the other first mounting member and the second mounting member.
One of the intervening members is interposed between the vibration damping target and the one of the first mounting members.
The other intervening member is in a vibration damping device that is interposed between the vibration damping target and the other first mounting member.
In addition, another aspect of the present invention is
With trout
Two plate-shaped first mounting members to be mounted on the damping target,
Two plate-shaped second mounting members to be mounted on the mass,
Two viscoelastic bodies fixed over the first mounting member and the second mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
One of the viscoelastic bodies is fixed over one of the first mounting members and one of the second mounting members.
The other viscoelastic body is fixed over the other first mounting member and the other second mounting member.
One of the intervening members is interposed between the vibration damping target and the one first mounting member, or between the mass and the one second mounting member.
The other intervening member is in a vibration damping device that is interposed between the vibration damping target and the other first mounting member, or between the mass and the other second mounting member.

By providing the interposition member, the vibration damping device can make the first mounting member or the second mounting member function as a leaf spring. Then, according to the above configuration, the viscoelastic body and the leaf spring form a composite spring in series. By arranging the viscoelastic body and the leaf spring in series in this way, the vibration damping effect can be enhanced.

It is a front view of the vibration damping device 1 of 1st Embodiment. It is a figure which looked at the vibration damping device 1 of FIG. 1 from the lower side. It is an enlarged cross-sectional view of the part III of the vibration damping device 1 of FIG. Regarding the vibration damping device 1 of the first embodiment and the vibration damping device of the comparative example (excluding the interposition member), the relationship of the transfer function according to the frequency is shown when the masses of both are the same. .. When the vibration damping device 1 of the first embodiment and the vibration damping device of the comparative example (excluding the interposition members) are adjusted so that their resonance frequencies are the same, the transfer function according to the frequency Show the relationship. The vibration damping device 100 of the second embodiment is shown, and it is sectional drawing corresponding to FIG. The vibration damping device 200 of the third embodiment is shown, and it is sectional drawing corresponding to FIG. The vibration damping device 300 of the fourth embodiment is shown, and it is sectional drawing corresponding to FIG. The vibration damping device 400 of the fifth embodiment is shown, and it is sectional drawing corresponding to FIG. It is a front view of the vibration damping device 500 of the sixth embodiment. It is a front view of the vibration damping device 600 of the 7th embodiment. It is a front view of the vibration damping device 700 of the eighth embodiment. It is a front view of the vibration damping device 800 of the ninth embodiment. It is a front view of the vibration damping device 900 of the tenth embodiment. It is a front view of the vibration damping device 1000 of the eleventh embodiment.

<1. First Embodiment>
(1-1. Configuration of vibration damping device 1)
The vibration damping device 1 will be described with reference to FIGS. 1 to 3. The vibration damping device 1 is a so-called dynamic vibration absorber. The vibration damping device 1 is, for example, a device that is fixed to the back of the floor on the upper floor of a house and reduces out-of-plane vibration generated in the floor material as the vibration damping target 2. That is, when the floor material as the vibration damping target 2 vibrates in the out-of-plane vibration direction, the vibration damping device 1 reduces the out-of-plane vibration of the floor material as the vibration damping target 2.

The vibration damping device 1 includes a mass 10, a first mounting member 20, two first mounting bolts 31 and 32, a second mounting member 40, two viscoelastic bodies 51 and 52, and two viscoelastic bodies 51 and 52. The second mounting bolts 61 and 62 and two interposing members 71 and 72 are provided.

The mass 10 is mainly formed of a material having a high specific density such as metal. The mass 10 is formed in a rectangular parallelepiped shape having an elongated rectangular bottom surface in consideration of a mounting location and the like. As the metal material applied to the mass 10, for example, a steel material is suitable, and aluminum or the like can also be applied. In addition to metal, the mass 10 is suitable as long as it is a material having a high specific density, and various materials other than metal can be applied. Further, the mass 10 is not limited to a rectangular parallelepiped shape, and may be formed into various shapes such as a cube shape, an oblong columnar shape, and a columnar shape.

The mass 10 is formed with two female screws 11 and 12 that open on the bottom surface side of the mass 10. The two female screws 11 and 12 are formed at positions separated from each other in the longitudinal direction of the bottom surface of the mass 10. The female screws 11 and 12 may be formed directly on the mass 10, or may be made of a material different from the main body of the mass 10, such as metal, having a high specific density and high strength. It is formed and may be integrally provided on the main body portion of the mass 10. Second mounting bolts 61 and 62, which will be described later, are screwed into the female screws 11 and 12.

The first mounting member 20 is mounted on the vibration damping target 2. The first mounting member 20 is formed of a metal such as a steel material in a flat plate shape. Specifically, the first mounting member 20 is formed in a rectangular plate shape corresponding to the rectangle on the bottom surface of the mass 10. However, as shown in FIG. 2, when the vibration damping device 1 is viewed toward the bottom surface of the mass 10, the outer shape of the first mounting member 20 is a rectangle located inside the outer shape of the bottom surface of the mass 10. .. As shown in FIG. 2, the first mounting member 20 is formed with two notches 21 and 22 that open on one long side. The two notches 21 and 22 are located closer to the center at a distance.

The two first mounting bolts 31, 32 are arranged in the two notches 21 and 22. The two first mounting bolts 31 and 32 are bolts having a head, such as hexagon bolts and hexagon socket head bolts. By fastening the two first mounting bolts 31 and 32 to the female screw of the vibration damping target 2, the first mounting member 20 is in contact with the vibration damping target 2 on one side of the first mounting member 20. Is fixed to the damping target 2.

The second mounting member 40 is mounted on the bottom surface side of the mass 10. The second mounting member 40 is formed of a metal such as a steel material in a flat plate shape. Specifically, the second mounting member 40 is formed in the shape of a rectangular plate corresponding to the rectangle on the bottom surface of the mass 10. More specifically, as shown in FIG. 2, when the vibration damping device 1 is viewed toward the bottom surface of the mass 10, the outer shape of the second mounting member 40 is located inside the outer shape of the bottom surface of the mass 10. It is a rectangle. The first mounting member 20 and the second mounting member 40 are arranged in parallel and facing each other so that the longitudinal direction of the first mounting member 20 and the longitudinal direction of the second mounting member 40 coincide with each other. The opposite direction of the first mounting member 20 and the second mounting member 40 coincides with the out-of-plane vibration direction (vertical direction in FIG. 1) of the vibration damping target 2. Further, the second mounting member 40 and the bottom surface of the mass 10 are arranged in parallel and facing each other so that the longitudinal direction of the second mounting member 40 and the longitudinal direction of the bottom surface of the mass 10 coincide with each other. Further, as shown in FIGS. 2 and 3, two circular through holes 41 and 42 are formed on both end sides of the second mounting member 40.

The two viscoelastic bodies 51 and 52 are formed of, for example, a columnar shape by a rubber elastic body or other elastomer. The two viscoelastic bodies 51 and 52 are fixed over the first mounting member 20 and the second mounting member 40. The two viscoelastic bodies 51 and 52 are arranged on both outer sides of the two notches 21 and 22 of the first mounting member 20. That is, the two viscoelastic bodies 51 and 52 are located at a distance in the longitudinal direction of the first mounting member 20. The shapes of the viscoelastic bodies 51 and 52 are not limited to the columnar shape, and may be any shape such as a prismatic shape.

The two second mounting bolts 61 and 62 are members for fixing the mass 10 and the second mounting member 40. The two second mounting bolts 61 and 62 are bolts having a head, for example, hexagon bolts or hexagon socket head bolts. The two second mounting bolts 61 and 62 are fastened to the two female screws 11 and 12 of the mass 10 by inserting the two through holes 41 and 42 of the second mounting member 40.

The two interposing members 71 and 72 are formed of, for example, metal in a plate shape and an annular shape. The two interposing members 71 and 72 are interposed between the bottom surface of the mass 10 and the second mounting member 40 with the two second mounting bolts 61 and 62 inserted. That is, the two interposing members 71 and 72 are located at positions outside the range facing the two viscoelastic bodies 51 and 52 in the vibration damping direction of the vibration damping target 2. Specifically, the two interposing members 71 and 72 are arranged on a straight line connecting the two viscoelastic bodies 51 and 52. In particular, the two interposing members 71 and 72 are arranged on both outer sides of the two viscoelastic bodies 51 and 52, respectively. The two interposing members 71 and 72 are separate members from the mass 10 and the second mounting member 40. Further, the interposing members 71 and 72 may be made of a hard material, and the shape thereof does not matter.

(1-2. Function of damping device 1 as a composite spring)
As shown in FIGS. 1 and 3, two interposing members 71 and 72 are interposed between the bottom surface of the mass 10 and the second mounting member 40. Therefore, a gap A is formed between the bottom surface of the mass 10 and the facing surface of the second mounting member 40 in the vibration damping direction of the vibration damping target 2, except for the positions where the two intervening members 71 and 72 are interposed. Will be done.

Further, as described above and as shown in FIGS. 1 and 3, the two intervening members 71 and 72 face the two viscoelastic bodies 51 and 52 in the vibration damping direction of the vibration damping target 2. It is located outside the range to be used. Therefore, in the second mounting member 40, the leaf spring B is between the fixed position of the viscoelastic body 51 and the fixed position of the interposing member 71, and between the fixed position of the viscoelastic body 52 and the interposing member 72. , C is formed.

That is, the two viscoelastic bodies 51 and 52 and the two leaf springs B and C form a composite spring in which the vibration damping target 2 and the mass 10 are in series. In the vibration damping device 1, the viscoelastic bodies 51 and 52 and the leaf springs B and C are arranged in this order from the vibration damping target 2 side toward the mass 10.

Here, in the vibration damping device 1, since the two viscoelastic bodies 51 and 52 support the vicinity of both ends of the first mounting member 20 and the second mounting member 40, the number of the second mounting members 40 is two. It is supported by both viscoelastic bodies 51 and 52. Further, in the vibration damping device 1, since the two leaf springs B and C support the vicinity of both ends of the second mounting member 40 and the mass 10, the mass 10 is both supported by the two leaf springs B and C. It is held and supported.

Further, the separation distance between one interposing member 71 and one viscoelastic body 51 and the separation distance between the other interposing member 72 and the other viscoelastic body 52 are the same. That is, since the leaf spring B and the leaf spring C have the same length and are made of the same material, they have the same spring characteristics.

(1-3. Vibration damping characteristics of vibration damping device 1)
The vibration damping characteristics of the vibration damping device 1 described above will be described with reference to FIGS. 4 and 5. Here, a vibration damping device that does not have the intervening members 71 and 72 with respect to the vibration damping device 1 will be used as a comparative example.

When the mass 10 is the same, the vibration damping characteristics (transmission function of vibration with respect to frequency) of the vibration damping device 1 and the comparative example are as shown in FIG. In FIG. 4, the solid line shows the vibration damping characteristic of the vibration damping device 1, and the broken line shows the vibration damping characteristic of the comparative example.

That is, since the vibration damping device 1 has the intervening members 71 and 72, the resonance frequency moves to the low frequency side. Further, the maximum value at the resonance frequency of the vibration damping device 1 is larger than the maximum value in the comparative example. Further, the vibration damping characteristic of the vibration damping device 1 is a peaky characteristic as compared with the comparative example. The peaky characteristic means that the sharpness of resonance becomes stronger, and corresponds to a larger Q value. The Q value is an index showing the sharpness of resonance, and is the ratio (f ₀ / Δf) of _{the resonance frequency f 0} to the difference Δf between the two frequencies at which the vibration energy is half the vibration energy at the resonance frequency.

Further, the vibration damping characteristics when the resonance frequency of the vibration damping device 1 and the resonance frequency of the comparative example are adjusted to around 50 Hz are as shown in FIG. In FIG. 5, the solid line shows the vibration damping characteristic of the vibration damping device 1, and the broken line shows the vibration damping characteristic of the comparative example. In this case, the maximum value of the vibration damping characteristic of the vibration damping device 1 is larger than the maximum value of the comparative example. Further, the mass of the mass 10 can be made smaller in the vibration damping device 1 than in the comparative example.

When the vibration damping device 1 includes the interposing members 71 and 72, the second mounting member 40 can function as the leaf springs B and C. Then, according to the above configuration, the viscoelastic bodies 51 and 52 and the leaf springs B and C form a composite spring in series. By arranging the viscoelastic bodies 51 and 52 and the leaf springs B and C in series in this way, as shown in FIGS. 4 and 5, the vibration damping effect can be enhanced and the weight of the mass 10 can be reduced. Can be planned.

Further, in the vibration damping device 1, the interposing members 71 and 72 are separate from the mass 10, the first mounting member 20, the first mounting bolts 31 and 32, the second mounting member 40, and the second mounting bolts 61 and 62. It is a member. As a result, it is possible to easily improve the vibration damping device that does not have the intervening members 71 and 72.

Further, the two interposing members 71 and 72 are arranged on a straight line connecting the two viscoelastic bodies 51 and 52. As a result, in addition to being able to stably vibrate the mass 10, it is possible to reduce the size of the vibration damping device 1.

Further, the two interposing members 71 and 72 are arranged on both outer sides of the two viscoelastic bodies 51 and 52, respectively. As a result, the effect of having a stable support of the mass 10 is obtained. Depending on the shape of the mass 10, one of the intervening member and the viscoelastic body may be two, the other may be one, and three or more interposing members and the viscoelastic body may be used.

Further, the separation distance between one interposing member 71 and one viscoelastic body 51 and the separation distance between the other interposing member 72 and the other viscoelastic body 52 are set to be the same. As a result, the leaf spring B and the leaf spring C have the same length and are made of the same material, and therefore have the same spring characteristics. As a result, the mass 10 can stably vibrate in the vibration damping direction (vertical direction in FIG. 1) in a state where the mass 10 is supported by both leaf springs B and C. Therefore, a high damping effect can be exhibited.

<2. Second Embodiment>
As shown in FIG. 6, the vibration damping device 100 of the second embodiment includes second mounting bolts 161, 162 instead of the second mounting bolts 61 and 62, and further includes two nuts 181, 182.

The second mounting bolts 161, 162 are made of metal and are screwed into the female screws 11 and 12 to form an integral member with the mass 10. Further, the mass 10 is provided with a hole instead of the female screws 11 and 12, and the second mounting bolts 161, 162 are inserted by press fitting or the like, so that both can be made into an integral member. .. Further, when the mass 10 is formed by casting, the second mounting bolts 161, 162 may be integrated inside the mass 10 by insert forming. Further, the second mounting bolts 161, 162 can be integrated with the mass 10 by cutting the material of the mass 10.

Then, the two second mounting bolts 161, 162 project from the bottom surface of the mass 10 so as to extend in the out-of-plane vibration direction of the vibration damping target 2 near both ends of the bottom surface of the mass 10 in the longitudinal direction. Further, the two second mounting bolts 161, 162 have a male screw at the tip. The tips of the two second mounting bolts 161, 162 are inserted into the two through holes 41, 42 and the two interposing members 71, 72 of the second mounting member 40.

The two nuts 181, 182 are screwed onto the tips of the two second mounting bolts 161, 162. The two nuts 181, 182 sandwich the second mounting member 40 and the two interposing members 71 and 72, respectively, between the two nuts 181, 182 and the bottom surface of the mass 10. That is, the two nuts 181 and 182 fix the second mounting member 40 and the two interposing members 71 and 72 to the mass 10. The vibration damping device 100 of the second embodiment also has the same effect as the vibration damping device 1 of the first embodiment.

<3. Third Embodiment>
In the vibration damping device 200 of the third embodiment, as shown in FIG. 7, the interposing members 271 and 272 are integrated with the second mounting bolts 161, 162. The second mounting bolt 161 as an integral member is an integral member with the mass 10 as in the second embodiment.

In the vibration damping device 200, the interposing members 271,272 are integrated with the second mounting bolts 161 and 162 for fixing the mass 10 and the second mounting member 40. In this case, since the interposing members 271,272 are integrated with other members, the assembly becomes easy, and the cost can be reduced by reducing the number of parts.

<4. Fourth Embodiment>
In the vibration damping device 300 of the fourth embodiment, as shown in FIG. 8, the interposing members 371 and 372 are integrated with the mass 10. The second mounting member 40 is in contact with the interposing members 371 and 372 as an integral member with the mass 10. As described above, since the interposing members 371 and 372 are integrated with other members, assembling is facilitated, and the cost can be reduced by reducing the number of parts.

<5. Fifth Embodiment>
In the vibration damping device 400 of the fifth embodiment, as shown in FIG. 9, the interposing members 471 and 472 are integrated with the second mounting member 40. The bottom surface of the mass 10 is in contact with the interposing members 471 and 472 as an integral member with the second mounting member 40. As described above, since the interposing members 471 and 472 are integrated with other members, the assembly becomes easy and the cost can be reduced by reducing the number of parts.

<6. Sixth Embodiment>
In the vibration damping device 500 of the sixth embodiment, as shown in FIG. 10, two second mounting bolts 61, 62 and two interposing members 71, 72 are two viscoelastic bodies 51, 52. It is located inside the. That is, as compared with the vibration damping device 1 of the first embodiment, in the vibration damping device 500, the separation distance between the two viscoelastic bodies 51 and 52 is longer, and the separation distance between the two second mounting bolts 61 and 62. And the separation distance between the two interposing members 71 and 72 is shortened. Similarly, in the vibration damping device 500, in the second mounting member 40, between the fixed position of the viscoelastic body 51 and the fixed position of the interposing member 71, and between the fixed position of the viscoelastic body 52 and the interposing member 72. Leaf springs B and C are formed between the fixed position and the fixed position.

The vibration damping device 500 has the same effect as the vibration damping device 1 of the first embodiment. Here, the two interposing members 71 and 72 are arranged inside the two viscoelastic bodies 51 and 52. Also in this case, the effect of having a stable support of the mass 10 is obtained.

<7. Seventh Embodiment>
In the vibration damping device 600 of the seventh embodiment, as shown in FIG. 11, two interposing members 671 and 672 are interposed between the first mounting member 20 and the vibration damping target 2. In this case, there is a gap D between the facing surfaces of the first mounting member 20 and the vibration damping target 2 in the vibration damping direction of the vibration damping target 2, except for the position where the two intervening members 671 and 672 are interposed. It is formed.

Further, the two interposing members 671 and 672 are located at positions outside the range facing the two viscoelastic bodies 51 and 52 in the vibration damping direction of the vibration damping target 2. In the vibration damping device 600, the two interposing members 671 and 672 are located inside the two viscoelastic bodies 51 and 52. Then, in the second mounting member 40, between the fixed position of the viscoelastic body 51 and the fixed position of the intervening member 671, and between the fixed position of the viscoelastic body 52 and the fixed position of the intervening member 672 are Form leaf springs E and F.

That is, the two viscoelastic bodies 51 and 52 and the two leaf springs E and F form a composite spring in which the vibration damping target 2 and the mass 10 are in series. In the vibration damping device 600, the leaf springs E and F and the viscoelastic bodies 51 and 52 are arranged in this order from the vibration damping target 2 side toward the mass 10. The vibration damping device 600 also has the same effect as the vibration damping device 1.

In the vibration damping device 600, the interposing members 671 and 672 are separate members from the first mounting member 20 and the first mounting bolts 31 and 32. In addition, the interposing members 671 and 672 may be integrated with the first mounting member 20 or may be integrated with the first mounting bolts 31 and 32. Further, the two interposing members 671 and 672 may be arranged on both outer sides of the two viscoelastic bodies 51 and 52, respectively. Further, the interposing members 671 and 672 may be integrated with the vibration damping target 2.

When the interposing members 671 and 672 are integrated with the first mounting bolts 31 and 32, they are configured as follows. The first mounting bolts 31 and 32 have a male screw screwed into the female screw of the vibration damping target 2 on one end side and a male screw screwed into the nut of the separate member on the other end side. Further, the intervening members 671 and 672 are integrated with the intermediate portion of the first mounting bolts 31 and 32. The interposing members 671 and 672 are interposed between the first mounting member 20 and the vibration damping target 2. Then, the first mounting member 20 is sandwiched between the interposing members 671 and 672 and the nut screwed to the other end side of the first mounting bolts 31 and 32.

<8. Eighth embodiment>
The vibration damping device 700 of the eighth embodiment will be described with reference to FIG. The vibration damping device 700 includes a mass 10, one first mounting member 20, two first mounting bolts 31, 32, two second mounting members 741, 742, and two viscoelastic bodies. It includes 51, 52, two second mounting bolts 61, 62, and two interposing members 71, 72. Here, the two second mounting members 741 and 742 are members obtained by dividing the second mounting member 40 in the vibration damping device 1 of the first embodiment into two members. In particular, the two second mounting members 741 and 742 correspond to the portions that function as the leaf springs B and C in the second mounting member 40 of the first embodiment.

In the vibration damping device 700, the two second mounting members 741 and 742 that function as the leaf springs B and C are separate bodies. Therefore, the leaf springs B and C of the vibration damping device 700 have characteristics different from the characteristics of the leaf springs B and C in the vibration damping device 1 of the first embodiment. By providing the two second mounting members 741 and 742 that are obtained by dividing the second mounting member 40 in this way, the characteristics of the leaf springs B and C can be freely changed. Further, the vibration damping device 700 has the same effect as the vibration damping device 1 of the first embodiment. Further, similarly to the above, the second mounting member 40 in the vibration damping devices 100, 200, 300, 400, 500 of the second to sixth embodiments may be divided into two second mounting members 741,742. ..

<9. Ninth Embodiment>
The vibration damping device 800 of the ninth embodiment will be described with reference to FIG. The vibration damping device 800 includes a mass 10, two first mounting members 821, 822, two first mounting bolts 31, 32, one second mounting member 40, and two viscoelastic bodies. It includes 51, 52, two second mounting bolts 61, 62, and two interposing members 671, 672. Here, the two first mounting members 821 and 822 are members obtained by dividing the first mounting member 20 in the vibration damping device 600 of the seventh embodiment into two members. In particular, the two first mounting members 821 and 822 correspond to the portions that function as the leaf springs E and F in the first mounting member 20 of the seventh embodiment.

In the vibration damping device 800, the two first mounting members 821 and 822 that function as the leaf springs E and F are separate bodies. Therefore, the leaf springs E and F of the vibration damping device 800 have characteristics different from the characteristics of the leaf springs E and F in the vibration damping device 600 of the seventh embodiment. By providing the two first mounting members 821 and 822 that are obtained by dividing the first mounting member 20 in this way, the characteristics of the leaf springs E and F can be freely changed. Further, the vibration damping device 800 has the same effect as the vibration damping device 600 of the seventh embodiment.

<10. Tenth Embodiment>
The vibration damping device 900 of the tenth embodiment will be described with reference to FIG. The vibration damping device 900 includes a mass 10, two first mounting members 921,922, two first mounting bolts 31, 32, two second mounting members 941, 942, and two viscoelastic devices. It includes elastic bodies 51 and 52, two second mounting bolts 61 and 62, and two interposing members 71 and 72. Here, the two first mounting members 921 and 922 are members obtained by dividing the first mounting member 20 in the vibration damping device 1 of the first embodiment into two members. In particular, the two first mounting members 921 and 922 are a portion of the first mounting member 20 of the first embodiment located between the first mounting bolt 31 and the viscoelastic body 51, and the first mounting bolt. It corresponds to a portion located between 32 and the viscoelastic body 52. Further, the two second mounting members 941 and 942 are members obtained by dividing the second mounting member 40 in the vibration damping device 1 of the first embodiment into two members. In particular, the two second mounting members 941 and 942 correspond to the portions that function as the leaf springs B and C in the second mounting member 40 of the first embodiment.

In the vibration damping device 900, the two second mounting members 941 and 942 that function as the leaf springs B and C are separate bodies. Therefore, the leaf springs B and C of the vibration damping device 900 have characteristics different from the characteristics of the leaf springs B and C in the vibration damping device 1 of the first embodiment. By providing the two second mounting members 941 and 942 that are obtained by dividing the second mounting member 40 in this way, the characteristics of the leaf springs B and C can be freely changed. Further, the vibration damping device 900 has the same effect as the vibration damping device 1 of the first embodiment.

Further, in the state before the vibration damping device 900 is assembled to the vibration damping target 2 and the mass 10, the members integrated with the viscoelastic body 51 are the first mounting member 921 and the second mounting member 941. The members integrated with the viscoelastic body 52 are the first mounting member 922 and the second mounting member 942. In this way, the unit including each of the viscoelastic bodies 51 and 52 becomes very small. Therefore, the transportation cost of the parts is reduced. Further, the unit including the viscoelastic body 51 and the unit including the viscoelastic body 52 have the same configuration except that the assembly direction is different. That is, even if it is a separate unit, the number of parts types can be reduced and the manufacturing cost can be reduced.

<11. Eleventh Embodiment>
The vibration damping device 1000 of the eleventh embodiment will be described with reference to FIG. The vibration damping device 1000 includes a mass 10, two first mounting members 1021, 1022, two first mounting bolts 31, 32, two second mounting members 1041, 1042, and two viscoelastic devices. It includes elastic bodies 51 and 52, two second mounting bolts 61 and 62, and two interposing members 671 and 672. Here, the two first mounting members 1021 and 1022 are members obtained by dividing the first mounting member 20 in the vibration damping device 600 of the seventh embodiment into two members. In particular, the two first mounting members 1021 and 1022 correspond to the portions that function as the leaf springs E and F in the first mounting member 20 of the seventh embodiment. The two second mounting members 1041 and 1042 are members obtained by dividing the second mounting member 40 in the vibration damping device 600 of the seventh embodiment into two members. In particular, the two second mounting members 1041 and 1042 are a portion located between the second mounting bolt 61 and the viscoelastic body 51 in the second mounting member 40 of the seventh embodiment, and the second mounting bolt. It corresponds to a portion located between 62 and the viscoelastic body 52.

In the vibration damping device 1000, the two first mounting members 1021 and 1022 that function as leaf springs E and F are separate bodies. Therefore, the leaf springs E and F of the vibration damping device 1000 have characteristics different from the characteristics of the leaf springs E and F in the vibration damping device 600 of the seventh embodiment. By providing the two first mounting members 1021 and 1022 obtained by dividing the first mounting member 20 in this way, the characteristics of the leaf springs E and F can be freely changed. Further, the vibration damping device 1000 has the same effect as the vibration damping device 600 of the seventh embodiment.

Further, in the state before the vibration damping device 1000 is assembled to the vibration damping target 2 and the mass 10, the members integrated with the viscoelastic body 51 are the first mounting member 1021 and the second mounting member 1041. The members integrated with the viscoelastic body 52 are the first mounting member 1022 and the second mounting member 1042. In this way, the unit including each of the viscoelastic bodies 51 and 52 becomes very small. Therefore, the transportation cost of the parts is reduced. Further, the unit including the viscoelastic body 51 and the unit including the viscoelastic body 52 have the same configuration except that the assembly direction is different. That is, even if it is a separate unit, the number of parts types can be reduced and the manufacturing cost can be reduced.

1,100,200,300,400,500,600,700,800,900,1000: Vibration damping device, 2: Vibration damping target, 10: Mass, 20,821,822,921,922,1021,1022: First mounting member, 31, 32: First mounting bolt, 40,741,742,941,942,1041,1042: Second mounting member, 51,52: Viscoelastic body, 61,62,161,162: First (Ii) Mounting bolts, 71, 72, 271,272, 371, 372, 471, 472, 671, 672: Interposition members, 181, 182: Nuts, A, D: Gap, B, C, E, F: Leaf springs

Claims (11)

With trout
A plate-shaped first mounting member to be mounted on the vibration damping target,
A plate-shaped second mounting member to be mounted on the mass,
A viscoelastic body fixed over the first mounting member and the second mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. With the interposition member located at the position
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
The interposition member is a member integrated with a first mounting bolt for mounting the first mounting member on the vibration damping target, or a second mounting bolt for fixing the mass and the second mounting member. , Vibration damping device. With trout
A plate-shaped first mounting member to be mounted on the vibration damping target,
A plate-shaped second mounting member to be mounted on the mass,
Two and viscoelastic body fixed across said second mounting member and the first mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
A vibration damping device in which the two intervening members are arranged on a straight line connecting the two viscoelastic bodies and are arranged on both outer sides of the two viscoelastic bodies. With trout
A plate-shaped first mounting member to be mounted on the vibration damping target,
A plate-shaped second mounting member to be mounted on the mass,
Two and viscoelastic body fixed across said second mounting member and the first mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
A vibration damping device in which the two intervening members are arranged on a straight line connecting the two viscoelastic bodies and are arranged inside the two viscoelastic bodies. With trout
One plate-shaped first mounting member to be mounted on the vibration damping target,
Two plate-shaped second mounting members to be mounted on the mass,
Two and viscoelastic body fixed across said second mounting member and the first mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
One of the viscoelastic bodies is fixed over the first mounting member and the second mounting member.
The other viscoelastic body is fixed over the first mounting member and the other second mounting member.
One of the intervening members is interposed between the mass and the other second mounting member.
The other intervening member is a vibration damping device interposed between the mass and the other second mounting member. With trout
Two plate-shaped first mounting members to be mounted on the damping target,
One plate-shaped second mounting member to be mounted on the mass,
Two and viscoelastic body fixed across said second mounting member and the first mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
One of the viscoelastic bodies is fixed over one of the first mounting members and the second mounting member.
The other viscoelastic body is fixed over the other first mounting member and the second mounting member.
One of the intervening members is interposed between the vibration damping target and the one of the first mounting members.
The other intervening member is a vibration damping device that is interposed between the vibration damping target and the other first mounting member. With trout
Two plate-shaped first mounting members to be mounted on the damping target,
Two plate-shaped second mounting members to be mounted on the mass,
Two and viscoelastic body fixed across said second mounting member and the first mounting member,
It is interposed between the vibration damping target and the first mounting member, or between the mass and the second mounting member, and deviates from the range facing the viscoelastic body in the vibration damping direction of the vibration damping target. Two intervening members located in the same position,
With
In the first mounting member or the second mounting member, a leaf spring is formed between the fixed position of the viscoelastic body and the fixed position of the interposition member.
The viscoelastic body and the leaf spring form a composite spring in series between the vibration damping target and the mass.
One of the viscoelastic bodies is fixed over one of the first mounting members and one of the second mounting members.
The other viscoelastic body is fixed over the other first mounting member and the other second mounting member.
One of the intervening members is interposed between the vibration damping target and the one first mounting member, or between the mass and the one second mounting member.
The other intervening member is a vibration damping device that is interposed between the vibration damping target and the other first mounting member, or between the mass and the other second mounting member. 2. Vibration control device. The vibration damping device according to any one of claims 2-7, wherein the interposing member is an integral member of the mass, the first mounting member, or the second mounting member. The vibration damping device according to any one of claims 2-7, wherein the interposing member is a member separate from the mass, the first mounting member, and the second mounting member. The intervening member is an integral member with a first mounting bolt for mounting the first mounting member on the vibration damping target, or a second mounting bolt for fixing the mass and the second mounting member. , The vibration damping device according to any one of claims 2-7. The vibration damping device includes the two viscoelastic bodies.
The vibration damping device according to any one of claims 1 and 4-6 , wherein the interposing member is arranged on a straight line connecting the two viscoelastic bodies.

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