JP2009127653A - Mount device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mount device capable of receiving a large input in a limited space. <P>SOLUTION: In this mount device, a vibrating part side connection part 7 and a fixed part side connection part 10 are connected to each other through a support elastic body 11. The mount device comprises a sheet member 15 into which a tension is input when the support elastic body 11 is elastically deformed. The mount device further comprises a second elastic body 20 brought into contact with a viscoelastic layer 16 formed of an adhesive material laminated on the lower surface of the sheet member 15. The second elastic body 20 is supported by the fixed part side connection part 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mounting device for mounting a device that generates vibration, such as a mounting device for elastically supporting a power train on a vehicle body, to a fixed portion.

As a conventional mounting device, for example, there is a structure described in Patent Document 1.
This structure has a structure in which a plate-shaped damping steel plate is sandwiched between a pair of insulators (elastic bodies such as rubber) in the vertical direction. Then, one of the pair of insulators is fixed to the vehicle body side frame, and the other is fixed to the engine.
With the above configuration, the vibration generated from the engine is absorbed by the damping steel plate and the insulator, and the vibration transmitted to the body frame side is absorbed.
Japanese Utility Model Publication No. 6-43388

In the above conventional example, the vibration from the engine is attenuated by the flexural vibration of the insulator constituting the spring portion. In addition, a damping steel plate is provided to attenuate large vibrations.
The friction element is generated by sliding of two friction members that are relatively displaced. For this reason, in order to receive a large input displacement, it is necessary to set the relative displacement amount between the two friction members large, that is, to extend the entire length of the friction member. This leads to a large occupied space of the mount device.
The present invention has been made paying attention to the above points, and an object thereof is to provide a mount device capable of receiving a larger input displacement in a limited space.

  In order to solve the above problems, a mounting device according to the present invention connects a first connecting portion fixed to a vibration generating portion and a second connecting portion fixed to the fixing portion by a supporting elastic body, and the supporting elastic body. A sheet material to which a tensile force is input in accordance with the elastic deformation of the sheet material is provided, and a second elastic body that contacts the viscoelastic layer laminated on the back surface side of the surface facing the support elastic body side of the sheet material is provided.

  As a result of the vibration input to the mounting device being damped by the internal friction of the viscoelastic layer, it is possible to receive a larger input displacement in a limited space.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram for explaining an arrangement example of the mounting device of the present embodiment. FIG. 2 is a diagram showing the configuration of the mounting apparatus.
(Constitution)
As shown in FIG. 1, this embodiment is an example in which a power train 1 in which an engine and a transmission are integrated is mounted on a vehicle body, that is, elastically supported.
The configuration shown in FIG. 1 is an example in the case of a mount by three-point support in which the power train 1 is mounted by being suspended from the vehicle body. In this example, two positions separated in the vehicle width direction at the upper part of the power train 1 are set as mount positions. The power train 1 is elastically supported by the mounting device 4 at the mounting position. Further, the lower part of the power train 1 is connected to the suspension member 2 via the link member 3. The axis of the link member 3 faces the vehicle front-rear direction when viewed from above.
The two mounting devices 4 are arranged between the vibration part side bracket 5 extending laterally from the power train 1 and the fixed part side bracket 6 positioned below the vibration part side bracket 5. To do. The fixed part side bracket 6 is fixed to the vehicle body.

Next, the configuration of the mounting device 4 will be described with reference to FIGS.
The vibration part side connection part 7 and the fixed part side connection part 10 are arranged to face each other in the vertical direction.
The fixed portion side connecting portion 10 includes a bottom portion 8 and a pair of outer wall portions 9 that are integrated with the bottom portion 8 and rise from the outer peripheral portion of the bottom portion 8. The bottom 8 is a raised portion 8a with the center raised upward. The bottom surface of the bottom portion 8 is a surface inclined downward from the raised portion 8a at the center toward the outer peripheral side.
Further, the pair of outer wall portions 9 are arranged at symmetrical positions with the vibration portion side connecting portion 7 as the center in a top view. The upper part 9a of each outer wall part 9 is inclined outward so that the inner surface faces obliquely upward.

And the said fixed part side connection part 10 attaches the outer peripheral side part of the bottom part 8 to the fixed part side bracket 6. FIG.
The vibration part side connecting part 7 is located above the raised part 8 a of the fixed part side connecting part 10. The vibration part side connection part 7 is located between the pair of outer wall parts 9 of the fixed part side connection part 10 in a top view. A bolt hole 7 c for attaching to the vibration part side bracket 5 is opened on the upper surface of the vibration part side connection part 7. Then, the upper surface 7 a of the vibration part side coupling part 7 is bolted to the vibration part side bracket 5. In addition, each side surface on the outer wall portion 9 side in the vibration portion side coupling portion 7 is an inclined surface 7b that is inclined so as to face obliquely downward.

  The height of the inclined surface 7 b of the vibration part side connection part 7 is located above the position of the upper part 9 a of the outer wall part 9 of the fixed part side connection part 10. And the support elastic body 11 is arrange | positioned so that the inclined surface 7b and the upper part 9a of the outer wall part 9 may be connected. That is, the support elastic body 11 has one end fixed to the inclined surface 7 b, extends obliquely downward from the inclined surface 7 b toward the upper portion 9 a of the outer wall portion 9, and the other end portion is an inner surface of the upper portion 9 a of the outer wall portion 9. It is fixed to. Further, the lower surface of the support elastic body 11 is inclined. The support elastic body 11 is made of rubber, for example.

With the above configuration, the support elastic body 11 connects the vibration part side connecting part 7 and the fixed part side connecting part 10. In addition, by extending the support elastic body 11 obliquely downward toward the outside, when a downward load is applied to the vibration part side connection part 7, the support elastic body 11 is compressed and deformed. Take the load.
Further, the sheet-like member 14 and the second elastic body 20 are disposed below the support elastic body 11 and in the fixed portion side connection portion 10.

As shown in FIG. 4, the sheet-like member 14 is composed of a sheet material 15 made of a film or other material, and a gel-like viscoelastic layer 16 laminated on one or both surfaces of the sheet material 15. In addition, anchor parts 17 are attached to both ends of the sheet material 15.
As shown in FIG. 2, the sheet-like member 14 is arranged so as to extend linearly while changing the traveling direction by the inflection part 18. That is, the sheet-like member 14 is constituted by a plurality of continuous linear portions 13a, 13b, 13c while changing the direction as appropriate by the inflection part 18. In the present embodiment, the plurality of linear portions 13 a, 13 b, and 13 c extend obliquely in the same direction as the support elastic body 11 and are arranged at positions that overlap each other.

Here, the uppermost linear portion of the linearly extending portions of the sheet-like member 14, that is, the portion extending linearly at the position closest to the support elastic body 11 is referred to as the first linear portion. Called 13a.
The first linear portion 13 a is inclined obliquely downward from the raised portion 8 a side toward the outer wall portion 9 side, and is inclined upward and downward in a direction along the lower surface of the support elastic body 11.
A part of the lower surface of the support elastic body 11 is in contact with the upper surface of the first linear portion 13a without vibration.

  The inclination angle of the lower surface of the support elastic body 11 is larger in the downward inclination angle than the inclination angle of the first linear portion 13a from the vibrating portion side connecting portion 7 toward the outer wall portion 9 side to the middle position. It is set. Further, the inclination angle of the lower surface of the support elastic body 11 thereafter is set to be smaller than the inclination angle of the first linear portion 13a. As a result, a convex portion is formed downward in the middle position on the lower surface of the support elastic body 11, and the convex portion becomes the initial contact portion 12. And the initial contact part 12 is contacting the upper surface of the said 1st linear part 13a.

In this embodiment, the inflection part 18 and the anchor part 17 are made of parts having the same shape. The structure is a top part in which the portion around which the sheet-like member 14 is wound has an arcuate outline. When the sheet-like member 14 contacts the arcuate surface portion, the sheet-like member 14 can be displaced in the extending direction while changing the extending direction.
Further, the second elastic body 20 is filled in the fixed portion side connecting portion 10 so as to embed the sheet-like member 14, the inflection component 18 and the anchor component 17 other than the upper surface of the first linear portion 13a. It is. That is, the second elastic body 20 is integrally molded in a state where the sheet-like member 14, the inflection part 18 and the anchor part 17 are cast. The second elastic body 20 is made of rubber, for example.

Accordingly, the sheet-like member 14, the bending part 18, and the anchor part 17 are positioned by the second elastic body 20. Then, the anchor component 17 fixed to the end portion of the sheet-like member 14 is supported by the fixed portion side connecting portion 10 via the second elastic body 20.
Here, an example of attachment of the end of the sheet-like member 14 to the anchor part 17 is shown in FIG.
The sheet-like member 14 is wound around the arc surface of the anchor part 17 with the viscoelastic layer 16 side facing the anchor part 17 side. The end of the sheet-like member 14 is in a state of being attached to the flat part of the anchor part 17. In this state, the sheet material 15 is attached to the second elastic body 20 by an adhesion process such as a plasma process. As a result, even if a tensile force is applied to the sheet material 15, the connection to the anchor component 17 is not released.

The relationship between the sheet-like member 14 and the inflection part 18 is changed by winding the sheet-like member 14 around the arc surface of the inflection part 18 with the viscoelastic layer 16 side facing the inflection part 18 side. ing.
As shown in FIG. 6, viscoelastic layers 16 are laminated on both surfaces of the sheet material 15 of the sheet-like member 14 that is completely embedded in the second elastic body 20.

Thereby, the viscoelastic layer 16 of the sheet-like member 14 is in contact with the second elastic body 20 except for the portion wound around the anchor component 17 and the inflection component 18.
Here, the order of the magnitude of the shear rigidity among the support elastic body 11, the sheet material 15, the viscoelastic layer 16, and the second elastic body 20 is as follows.
Support elastic body 11> Sheet material 15> Second elastic body 20 >> Viscoelastic layer 16
Moreover, the vibration part side connection part 7 comprises a 1st connection part. The fixed part side connecting part 10 constitutes a second connecting part. The second elastic body 20 constitutes the second elastic body 20. The viscoelastic layer 16 constitutes the viscoelastic layer 16.

(Mechanism and operation)
When the power train 1 is elastically supported by the mount device 4, a downward supporting load is applied to the vibration part side connecting part 7.
At this time, since the support elastic body 11 extends obliquely downward toward the outside and connects the vibration part side connection part 7 and the fixed part side connection part 10, the support elastic body 11. Undergoes compressive deformation and receives the support load.
In addition, the support elastic body 11 extends to both sides in the left-right direction when viewed from above, and generates a restoring force that expands and contracts in the lateral direction of the vibration part side connection part 7 with respect to the fixed part side connection part 10 and returns to the initial position. To do.

In this state, consider a case where vibration or the like is input to the mounting device 4 and the vibration part side coupling part 7 is displaced up and down relative to the fixed part side coupling part 10, for example.
The support elastic body 11 expands and contracts so that the inclined surface 7b and the outer wall portion 9 approach and separate from each other along with the vertical relative displacement of the vibration portion side coupling portion 7, and absorbs vibration.
Accordingly, a substantially vertical load is input from the initial contact portion 12 formed on the lower surface of the support elastic body 11 to the sheet material 15 of the first linear portion 13a. Further, since the support elastic body 11 extends obliquely, a lateral displacement is also generated in the initial contact portion 12, and the lateral force is also input to the sheet material 15 of the first linear portion 13a. The Further, the load is also input to the second elastic body 20 via the sheet-like member 14, and a reaction force against the input is generated to absorb the vibration.

Due to the above input, the portion of the sheet material 15 of the first linear portion 13a that contacts the initial contact portion 12 and the vicinity thereof are deformed, whereby a tensile force is generated in the sheet material 15 and displacement in the extending direction occurs. . At this time, since the shear rigidity of the support elastic body 11 is larger than that of the sheet material 15 and the second elastic body 20, the support elastic body 11 is pushed by the support elastic body 11 and reliably deforms.
At this time, the second elastic body 20 has a higher shear rigidity than the viscoelastic layer 16. For this reason, the viscoelastic layer 16 (viscoelastic body layer) positioned between the sheet material 15 and the second elastic body 20 is shear-deformed by the displacement in the tension direction. As a result of the internal deformation of the viscoelastic layer 16 due to this shear deformation, vibrations and the like input to the mounting device 4 are reduced. In particular, the displacement generated in the sheet material 15 at and near the portion in contact with the initial contact portion 12 is large.

  Here, the sheet-like member 14 that contacts the second elastic body 20 via the viscoelastic layer 16 generates a large displacement in the tensile direction in proportion to the input displacement. Therefore, as the total length of the sheet-like member 14 is longer, a larger input displacement can be received (due to the limitation on the breakage limit). And in this embodiment, in the fixed part side connection part 10, the full length of the sheet-like member 14 is lengthened by folding back the sheet-like member 14 with the inflection part 18 and continuing. As a result, a large input displacement such as vibration to the mount can be received in a limited space.

In addition, the displacement to the extension direction is permitted by making the outline of the part which winds the sheet-like member 14 of the inflection part 18 into a curve.
A mathematical model of the mechanism of the above configuration is shown in FIG. FIG. 7A shows a model in which the mount is represented by a spring, a damper, and a friction element, and a mathematical model in which vibration input components connected to the vibration fixing portion are represented by a mass, a spring, and a damper. FIG. 7B shows a simulation model equivalent to these.
The differential equations representing these relationships are shown below.

  Further, as the amount of downward displacement of the vibration portion side coupling portion 7 increases, the lower surface of the support elastic body 11 is also displaced downward and approaches the sheet material 15 of the first linear portion 13a. At this time, as shown in FIG. 8, the inclination angle of the lower surface on the vibration portion side coupling portion 7 side is smaller than the initial contact portion 12, and approaches the inclination angle of the first linear portion 13 a. . As a result, the contact area of the first linear portion 13a of the support elastic body 11 with the sheet material 15 increases as the amount of downward displacement of the vibration portion side coupling portion 7 increases.

  Further, when an input displacement is applied to the support elastic body 11, the contact portion of the support elastic body 11 with the sheet material 15 pulls the sheet material 15. The tensile force of the sheet material 15 increases as the downward input for generating a large repulsive force in the second elastic body 20 increases. Further, when the sheet-like member 14 is displaced in the in-plane direction, the sheet-like member 14 receives a reaction force of the viscoelastic layer 16. The closer it is, the larger the area becomes, and this vicinity becomes the weakest part in terms of strength. In view of this, as described above, as the downward displacement increases, the contact area of the support elastic body 11 with the sheet material 15 increases. As a result, the input area from the support elastic body 11 to the sheet material 15 increases. Thereby, the tensile force of the sheet material 15 is shared over a wide area.

(Effect of this embodiment)
(1) A larger input can be received with respect to an input such as vibration, and the input can be attenuated efficiently.
That is, when an input such as vibration enters the mount device 4, the support elastic body 11 is deformed to absorb the vibration. Further, the deformation causes a tensile force (displacement) to the sheet-like member 14, and the displacement in the tensile direction causes the viscoelastic layer 16 to undergo shear deformation, and the viscoelastic layer 16 generates internal friction, thereby mounting. The vibration input to the device 4 is damped. The input is also absorbed by the second elastic body 20 by generating a reaction force. As a result, a larger input can be received and the input can be attenuated efficiently.

(2) Further, since the initial contact portion 12 is in contact with the sheet-like member 14 in a state where no vibration is input, the initial contact portion 12 can be attenuated from the initial vibration.
(3) Further, the extending direction of the sheet-like member 14 is folded and connected by the inflection part 18. As a result, the entire length of the sheet-like member 14 can be increased even in a limited space. Therefore, a large input displacement such as vibration to the mount device can be received more effectively in a limited space.

(4) Further, as the vibration amplitude of the vibration part side coupling part 7 increases and the input from the support elastic body 11 to the sheet-like member 14 increases, the contact area between the support elastic body 11 and the sheet-like member 14 increases. is doing. Thereby, the strength durability of the sheet-like member 14 is improved.
That is, the larger the input from the support elastic body 11 to the sheet-like member 14, the larger the input area of the sheet material 15, whereby the tensile force of the sheet material 15 can be shared over a wider area. As a result, the stress concentration at the contact portion can be alleviated, and the local stress can always be prevented from concentrating on the same portion near the initial contact portion 12.

(5) Here, the initial contact portion 12 of the support elastic body 11 with respect to the sheet-like member 14 is convex toward the sheet-like member 14. Thereby, the effect (3) can be obtained with a simple structure.
That is, by making the initial contact portion 12 have a convex shape, the apex of the convex portion can be reliably brought into contact with the intended portion of the sheet material 15 even when there is no vibration input and when the input is small.
Further, by designing the contact surface of the support elastic body 11 and the contact surface of the sheet material 15 at an appropriate relative angle, the contact area when the input deformation is performed can be easily predicted.
Furthermore, when it is desired to arbitrarily control the amount of increase in the contact area, the effect can be easily obtained by designing the contact surface of the convex support elastic body 11 with a radius of curvature.

(6) The sheet-like member 14, the anchor part 17, and the inflection part 18 are supported and positioned by the fixed part side connecting part 10 via the second elastic body 20.
Accordingly, a reaction force is applied to the second elastic body 20 to generate internal friction due to the shear displacement of the viscoelastic layer 16, and the positioning of the sheet-like member 14, the anchor part 17, and the bending part 18 is performed. There is no need to provide other parts.
In addition, by elastically supporting the sheet-like member 14 and the inflection part via the second elastic body 20, when the second elastic body 20 is elastically deformed by the input from the support elastic body 11, the deformation is accompanied by the elastic deformation. The curved part 18 is rotationally displaced. Due to this rotational displacement, the bending direction of the sheet material 15 at the inflection part 18 changes in a substantially opposite direction. As a result, a tensile force can be continuously input to the sheet material 15, and a shear deformation that generates internal friction can be continuously input to the viscoelastic layer 16 to obtain an intended damping effect. I can do it.

(7) The sheet material 15 is composed of a sheet material 15 having a strength higher than that of the second elastic body 20 and a low Young's modulus (for example, a polymer material such as polyimide or polyamide or an amorphous metal), and is more rigid than the sheet material 15. A viscoelastic layer 16 having a small thickness is laminated. This allows a wide range of input level attenuation.
The reason will be described next.
Since the load from the support elastic body 11 receives a reaction force due to the shear deformation of the viscoelastic layer 16 and the second elastic body 20 under the sheet material 15, the sheet material 15 constituting the sheet-like member 14 extends. Displaces in the current direction. Since the sheet material 15 has a low Young's modulus, the displacement is large in the vicinity of the contact portion, and becomes smaller as the distance from the contact portion is increased. As a result, when the input is small, the area of the displaced viscoelastic layer 16 is a small portion near the contact portion, so that the apparent rigidity is reduced. Conversely, when the input is large, the area of the displaced viscoelastic layer 16 is wide. Since the apparent rigidity increases, a wide range of input levels can be attenuated.

In addition, even when the frequency varies, the damping mechanism is the internal slip of the viscoelastic layer 16, and there is an effect that tuning is not necessary depending on the frequency.
In the case of a mechanism that generates a frictional force by sliding the contact portions of two friction members, the corresponding input level is only proportional to the contact area of the opposing friction members, and is sufficient for the maximum input, for example. When designed so that a sufficient damping effect can be obtained, the frictional force becomes too large for a small level and the transmission force cannot be dissipated, and the desired damping effect may not be obtained.

(Modification)
(1) In the said embodiment, the case where the support elastic body 11 is arrange | positioned in the left-right 2 direction centering on the vibration part side connection part 7 in top view was illustrated. Instead, as shown in FIG. 9, the support elastic body 11 is arranged in the three directions in the top view with the vibration part side connecting part 7 as the center.
In this case, at least one support elastic body 11 is elastically deformed in the compression direction and the other support elastic body 11 is elastically deformed in the extending direction with respect to the lateral input, whereby the lateral input can be dispersed, and the support elastic body 11 can be prevented from being damaged.
(2) FIG. 10 shows another example. This another example is a case where the supporting elastic body 11 is arranged in 42 directions with the vibrating portion side connecting portion 7 as the center in a top view.
In this case, as compared with the case where they are arranged in the above three directions, the lateral input can be more dispersed, so that the support elastic body 11 can be further prevented from being damaged.

(3) FIG. 11 shows another example. In this other example, the vibrating portion side connecting portion 7 is arranged in the center portion in a top view, and the outer wall portion 9 of the fixed portion side connecting portion 10 is formed in a cylindrical shape. The support elastic body 11 is represented by a case where the support elastic body 11 is arranged in three directions as viewed from above. The second elastic body 20 is provided so as to fill the entire circumferential direction of the cylindrical outer wall portion 9.
The second elastic body 20, the sheet-like member 14, and the like are built in the fixed part side connecting part 10. Thereby, when the input of a horizontal direction is received, damage to the said 2nd elastic body 20, the sheet-like member 14, etc. can be prevented.
(4) FIG. 12 shows an example in which the power train 1 is supported from the lower side. Even in this case, the mount device 4 having the above-described configuration can be applied.

(5) The mount device 4 may be used with the top and bottom reversed. That is, the fixed part side connecting part 10 is fixed to the vibration generating part side, and the vibrating part side connecting part 7 is fixed to the fixed part side. In this case, the relative behavior is the same as described above, and the same effect is achieved.
(6) The second elastic body 20 may also be provided between the lower surface of the support elastic body 11 and the sheet-like member 14. In this case, it is preferable to provide the viscoelastic layer 16 also on the surface of the sheet material 15 on the second elastic body 20 side.
(7) Moreover, you may comprise the viscoelastic layer 16 from viscoelastic materials other than an adhesive material. Even in this case, the shear rigidity of the viscoelastic layer 16 is set lower than that of the second elastic body 20 and the sheet material 15.

It is a figure which shows the mount position which concerns on embodiment based on this invention, Comprising: (a) is a top view, (b) is a side view. It is a side view explaining the mount device concerning the embodiment based on the present invention. It is a top view explaining the mount device concerning the embodiment based on the present invention. It is a figure explaining the sheet-like member which concerns on embodiment based on this invention. It is a figure which shows the coupling | bonding structure to the anchor components which concern on embodiment based on this invention. It is a figure explaining the sheet-like member in the 2nd elastic body. It is a figure which shows a mathematical model. It is a figure explaining the behavior of a support elastic body and a sheet-like member. It is a top view which shows another example of arrangement | positioning of a support elastic body. It is a top view which shows another example of arrangement | positioning of a support elastic body. It is a top view which shows another example of the mounting apparatus. It is a figure which shows another example of the mount position which concerns on embodiment based on this invention, Comprising: (a) is a top view, (b) is a side view.

Explanation of symbols

1 Powertrain 2 Suspension member 4 Mount device 5 Vibration side bracket (vibration generating part)
6 Fixed part side bracket (fixed part)
7 Vibrating part side connecting part (first connecting part)
7b Inclined surface 9 Outer wall portion 9a Upper portion of outer wall portion 10 Fixed portion side connecting portion (second connecting portion)
DESCRIPTION OF SYMBOLS 11 Support elastic body 12 Initial contact part 13a Linear part 14 Sheet-like member 15 Sheet material 16 Viscoelastic layer 17 Anchor part 18 Inflection part 20 2nd elastic body

Claims (7)

A mounting device that elastically supports the vibration generating portion on the fixed portion,
A first connecting part fixed to the vibration generating part, a second connecting part fixed to the fixing part,
A supporting elastic body that receives a load that is input to the mounting device by connecting the first connecting portion and the second connecting portion;
A sheet material that is supported by one of the first connecting portion and the second connecting portion and into which a tensile force is input along with the elastic deformation of the supporting elastic body,
A viscoelastic layer made of an adhesive or a viscoelastic body laminated on at least one surface of the sheet material;
A second elastic body that is supported by the one connecting portion and is in contact with a viscoelastic layer that is laminated on at least the back surface side of the sheet material facing the support elastic body side, and has lower rigidity than the support elastic body;
A mounting device comprising:   The supporting elastic body has an initial contact portion in direct contact with the sheet-like member composed of the sheet material and the viscoelastic layer or in contact with the second elastic body laminated on the sheet-like member in a state where vibration is not input. The mounting apparatus according to claim 1, further comprising:   The mounting device according to claim 2, wherein the contact portion has a larger contact area as the supporting elastic body is displaced toward the sheet-like member.   The mounting device according to claim 2, wherein the contact portion has a convex shape protruding toward the sheet material side.   The anchor part is provided in at least one of the sheet-like member composed of the sheet material and the viscoelastic layer, and the anchor part is embedded in the second elastic body. The mounting device described.   The sheet-like member composed of the sheet material and the viscoelastic layer extends in a straight line while the extending direction is changed by an inflection part in which a contact portion with the sheet-like member is a curved surface. The mounting device according to claim 1, wherein the curved part is supported by the second elastic body.   7. The sheet material according to claim 1, wherein the sheet material has higher strength and a lower Young's modulus than the second elastic body, and the viscoelastic layer has a shear rigidity smaller than that of the sheet material. The mounting device described in 1.

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