Vibration damping structure and device incorporating vibration damping structure

Abstract

This vibration damping structure is provided with a first support member, a second support member, and one or more vibration damping units. The at least one damping unit is connected between the first support member and the second support member, and suppresses vibration in the first direction acting on the first support member and the second support member. Each of the one or more damping units includes a first damping core unit connected to the first support portion via a hinge, and a second damping core unit connected to the second support member via a hinge. The first and second damper core units are also connected via a hinge. Furthermore, each of the first and second damper core units has four rotating members, and the position of each rotating member, when viewed from the first direction, is connected to another member via a hinge that is appropriately defined. The position of the hinge is appropriately defined so that each of the rotating members can rotate when vibrated in the first direction.

Description

Technical Field

[0001] The present invention relates to a vibration damping structure that can be used for damping vibrations and a device incorporating the vibration damping structure. Background Art

[0002] In daily life, vibrations occur very close to us, for example, from vehicles such as trains and cars, vibration tools such as chain saws and lawn mowers, and music equipment such as radios and musical instruments. For example, vibrations may be directly transmitted from vehicles, vibration tools, etc., or may be transmitted through sound waves.

[0003] The vibration frequency (frequency) of the vibration transmitted to the solid is generally called the range of 20 to 1000 Hz, for example, it causes vibration (physical property influence) to buildings, furniture, etc. Such vibration may cause equipment to be damaged by strong swings, or cause deviations in delicate operations such as printing and processing.

[0004] Vibration not only directly affects objects and tasks, but also people in many cases. For example, depending on the time when the vibration occurs, it affects sleep, and if you are exposed to these vibrations for a long time, the psychological impact will also increase. In this way, vibration has become a major factor in the environment in which people live, and it is very important to suppress vibration in order to create a comfortable and less troublesome environment.

[0005] Examples of vibration damping methods for damping vibration include a method using a damping mechanism (vibration damping structure) such as a spring damper and a method using a damping material such as sponge or rubber.

[0006] In recent years, research on metamaterials, which are components with fine periodic structures at a directly controllable scale, has been actively conducted. In such metamaterial structures, the fine periodic structures can exhibit properties that cannot be exhibited by the original properties of the material alone.

[0007] It is also possible to use such metamaterial structures to control propagating sound waves and vibrations, which are also called acoustic metamaterials. By changing the fine periodic structure, specific frequencies can be absorbed or propagating sound waves and vibrations can be attenuated.

[0008] Patent Document 1 discloses a vibration reduction structure having a motion vibration absorber. The motion vibration absorber is characterized in that it has a fine periodic structure having a rod-shaped support portion extending from a frame at one end and a vibrating portion connected to the other end of the support portion and extending beyond the support portion, so that the resonance frequency of the object to be vibration-reduced is dispersed and the vibration energy is suppressed.

[0009] Patent Document 2 discloses a sound insulator that can be disposed on a partition wall and is made of an acoustic metamaterial that can be integrally formed. The sound insulator has a plurality of resonance parts including a weight part, and the resonance parts generate vibrations that are different from the vibrations transmitted to the sound insulator, so the vibrations are attenuated.

[0010] Prior art literature

[0011] Patent Literature

[0012] Patent Document 1: Japanese Patent Application Publication No. 2020-3059

[0013] Patent Document 2: Japanese Patent Application Publication No. 2021-152584 Summary of the invention

[0014] Problems to be solved by the invention

[0015] There is a demand for a vibration damping structure that can exhibit a high vibration damping function in this way.

[0016] In view of the above circumstances, an object of the present invention is to provide a vibration damping structure capable of exerting a high vibration damping function and a device incorporating the vibration damping structure.

[0017] Means used to solve problems

[0018] In order to achieve the above-mentioned object, a vibration damping structure according to one aspect of the present invention includes a first support member, a second support member, and one or more vibration damping units.

[0019] The second supporting member is arranged to face the first supporting member along the first direction.

[0020] The one or more vibration damping units are connected between the first supporting member and the second supporting member to dampen vibration in the first direction acting on the first supporting member and the second supporting member.

[0021] Furthermore, each of the one or more vibration damping units includes a first vibration damping core unit and a second vibration damping core unit.

[0022] The first damping core unit comprises: a first rotating member connected to the first supporting member via a first hinge; a second rotating member connected to the first supporting member via a second hinge; a third rotating member connected to the first rotating member via a third hinge arranged at a position different from the first hinge when viewed from the first direction; and a fourth rotating member connected to the second rotating member via a fourth hinge arranged at a position different from the second hinge when viewed from the first direction.

[0023] The above-mentioned second vibration damping core unit includes: a fifth rotating member, which is connected to the above-mentioned second supporting member via a fifth hinge; a sixth rotating member, which is connected to the above-mentioned second supporting member via a sixth hinge; a seventh rotating member, which is connected to the above-mentioned fifth rotating member via a seventh hinge arranged at a position different from the above-mentioned fifth hinge when viewed from the above-mentioned first direction; and an eighth rotating member, which is connected to the above-mentioned sixth rotating member via an eighth hinge arranged at a position different from the above-mentioned sixth hinge when viewed from the above-mentioned first direction.

[0024] The first damping core unit and the second damping core unit are connected to each other via the following hinges: a ninth hinge, which is arranged at a position different from the third hinge when viewed from the first direction, and is connected to the third rotating component; a tenth hinge, which is arranged at a position different from the fourth hinge when viewed from the first direction, and is connected to the fourth rotating component; an eleventh hinge, which is arranged at a position different from the seventh hinge when viewed from the first direction, and is connected to the seventh rotating component; and a twelfth hinge, which is arranged at a position different from the eighth hinge when viewed from the first direction, and is connected to the eighth rotating component.

[0025] In the vibration damping structure, one or more vibration damping units are connected between the first support member and the second support member. The one or more vibration damping units each include a first vibration damping core unit and a second vibration damping core unit.

[0026] The first damping core unit is connected to the first support member via the first and second hinges, and the second damping core unit is connected to the second support member via the fifth and sixth hinges. The first damping core unit and the second damping core unit are connected to each other via the ninth to twelfth hinges.

[0027] The first damping core unit has first to fourth rotating members, wherein the first rotating member and the third rotating member are connected to each other via a third hinge, and the second rotating member and the fourth rotating member are connected to each other via a fourth hinge.

[0028] The second damping core unit has fifth to eighth rotating members, wherein the fifth rotating member and the seventh rotating member are connected to each other via a seventh hinge, and the sixth rotating member and the eighth rotating member are connected to each other via an eighth hinge.

[0029] As described above, the positions of the first to twelfth hinges when viewed from the first direction are appropriately set.

[0030] If the vibration in the first direction acts on the first supporting member and the second supporting member, each rotating member rotates with the hinge as the base point. The connection portion of the first damping core unit and the second damping core unit is displaced in a direction that cancels the vibration in the first direction acting on the first supporting member and the second supporting member. Thus, the vibration acting on the first supporting member and the second supporting member can be suppressed. As a result, a higher vibration damping function can be exerted.

[0031] The above-mentioned one or more vibration reduction units may also respectively include vibration reduction driving components, which are connected to the above-mentioned third rotating component via the above-mentioned ninth hinge, connected to the above-mentioned fourth rotating component via the above-mentioned tenth hinge, connected to the above-mentioned seventh rotating component via the above-mentioned eleventh hinge, and connected to the above-mentioned eighth rotating component via the above-mentioned twelfth hinge.

[0032] If the displacement of the first supporting member and the second supporting member in a first direction in the first direction caused by the vibration in the first direction is defined as the first vibration displacement, and the displacement of the first supporting member and the second supporting member in a second direction in the first direction opposite to the first direction is defined as the second vibration displacement, the first vibration damping core unit may be configured to be tensilely deformed in the first direction corresponding to the first vibration displacement, and compressively deformed along the first direction corresponding to the second vibration displacement. In this case, the second vibration damping core unit may be configured to be compressively deformed in the first direction corresponding to the first vibration displacement, and tensilely deformed along the first direction corresponding to the second vibration displacement.

[0033] The vibration reduction driving member may be configured to be displaced in the second direction in response to the first vibration displacement, and to be displaced in the first direction in response to the second vibration displacement.

[0034] The one or more vibration reduction units may set respective resonance frequencies based on the frequency of the vibration in the first direction to be reduced.

[0035] The frequency of the vibration in the first direction as the vibration reduction target may be within the range of 20 Hz to 1000 Hz.

[0036] The above-mentioned one or more vibration damping units can also be connected between the above-mentioned first supporting member and the second supporting member based on a first connection reference position set on the above-mentioned first supporting member and a second connection reference position set on the above-mentioned second supporting member and the same position as the above-mentioned first connection reference position when observed from the above-mentioned first direction.

[0037] Each of the one or more vibration damping units may be configured symmetrically with respect to a reference line extending in the first direction and connecting the first connection reference position and the second connection reference position.

[0038] In each of the one or more vibration damping units, the first rotating member, the second rotating member, the third rotating member, and the fourth rotating member may be arranged symmetrically with respect to the center of the first vibration damping core unit. In this case, the fifth rotating member, the sixth rotating member, the seventh rotating member, and the eighth rotating member may be arranged symmetrically with respect to the center of the second vibration damping core unit.

[0039] When viewed from the first direction, the first hinge, the fifth hinge, the ninth hinge, and the eleventh hinge may be arranged at the same position. In this case, when viewed from the first direction, the second hinge, the sixth hinge, the tenth hinge, and the twelfth hinge may be arranged at the same position. Furthermore, when viewed from the first direction, the third hinge and the seventh hinge may be arranged at the same position. Furthermore, when viewed from the first direction, the fourth hinge and the eighth hinge may be arranged at the same position.

[0040] The first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the sixth hinge, the seventh hinge, the eighth hinge, the ninth hinge, the tenth hinge, the eleventh hinge and the twelfth hinge may each be composed of a thin-walled component extending in the first direction and having a relatively small cross-sectional dimension perpendicular to the first direction.

[0041] The first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the sixth hinge, the seventh hinge, the eighth hinge, the ninth hinge, the tenth hinge, the eleventh hinge and the twelfth hinge may each set a size of a cross section orthogonal to the first direction based on the frequency of vibration in the first direction to be subjected to vibration reduction.

[0042] At least one of the first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the sixth hinge, the seventh hinge, the eighth hinge, the ninth hinge, the tenth hinge, the eleventh hinge and the twelfth hinge may also form an R-shaped chamfered portion on the connection portion with other components.

[0043] The radius of the R-shaped chamfered portion may be greater than 1 mm.

[0044] One or more weights may be disposed on each of the one or more vibration-damping units.

[0045] The above-mentioned one or more weights may also include: the first weight arranged on the above-mentioned first rotating component of the above-mentioned first vibration damping core unit, the second weight arranged on the above-mentioned second rotating component, the third weight arranged on the above-mentioned third rotating component and the fourth weight arranged on the above-mentioned fourth rotating component; and the fifth weight arranged on the above-mentioned fifth rotating component of the above-mentioned second vibration damping core unit, the sixth weight arranged on the above-mentioned sixth rotating component, the seventh weight arranged on the above-mentioned seventh rotating component and the eighth weight arranged on the above-mentioned eighth rotating component.

[0046] The first weight, the second weight, the third weight, and the fourth weight may be arranged symmetrically with respect to the center of the first damping core unit. In this case, the fourth weight, the fifth weight, the sixth weight, and the seventh weight may be arranged symmetrically with respect to the center of the second damping core unit.

[0047] For the one or more weights, at least one of the number, weight, shape, and arrangement position may be set based on the frequency of the vibration in the first direction to be damped.

[0048] The vibration damping structure may further include a reinforcing member connected between the first supporting member and the second supporting member so as to surround the one or more vibration damping units, thereby reinforcing the rigidity of the vibration damping structure.

[0049] A gap of at least 1 mm may be provided between each of the one or more vibration damping units and the reinforcing member.

[0050] The reinforcing member may include a pair of two oblique frame members connected to one of the first supporting member and the second supporting member and extending in an oblique direction with respect to the first direction in a manner symmetrical to each other with respect to the reference line.

[0051] The reinforcing member may be formed of a truss structure.

[0052] The above-mentioned reinforcement components can also be formed by optimizing the topological structure.

[0053] The reinforcing member may be formed of a plate-shaped member disposed in a region around the one or more vibration damping units between the first supporting member and the second supporting member.

[0054] The above-mentioned reinforcement part may also have a plurality of frame parts including oblique support parts extending in an oblique direction relative to the above-mentioned first direction, and an R-shaped chamfered portion is formed on at least one of the connecting parts between the above-mentioned first supporting part and the above-mentioned plurality of frame parts, the connecting part between the above-mentioned second supporting part and the above-mentioned plurality of frame parts, and the connecting parts between the frame parts included in the above-mentioned plurality of frame parts.

[0055] The reinforcement member may form the R-shaped chamfered portion at a connection portion between the oblique support members.

[0056] The reinforcing member may have an R-shaped chamfered portion on at least one of a connecting portion between the first supporting member and the plate-like member, a connecting portion between the second supporting member and the plate-like member, and a corner formed on an end surface of the plate-like member.

[0057] The reinforcement member may have the R-shaped chamfered portion at a corner portion formed on a surface facing each of the one or more vibration damping units.

[0058] The radius of the R-shaped chamfered portion may be greater than 2 mm.

[0059] The first vibration damping core unit may include at least one of a first internal reinforcement member connecting the first rotating member and the second rotating member to each other and a second internal reinforcement member connecting the third rotating member and the fourth rotating member to each other. In this case, the second vibration damping core unit may include at least one of a third internal reinforcement member connecting the fifth rotating member and the sixth rotating member to each other and a fourth internal reinforcement member connecting the seventh rotating member and the eighth rotating member to each other.

[0060] The vibration input point may be set at a predetermined position of the first supporting member.

[0061] A vibration output point may be set at a position of the first supporting member that is away from the vibration input point.

[0062] The one or more vibration reduction units may be a plurality of vibration reduction units arranged side by side along a second direction orthogonal to the first direction.

[0063] The vibration input point may be set at a position of one end portion of the first supporting member in the second direction.

[0064] The vibration input point may be set at a center position of the first supporting member in the second direction.

[0065] The vibration damping structure may be configured such that the first direction is along a vertical direction and the first support member is located above the second support member.

[0066] The above-mentioned vibration damping structure may also be configured as a metamaterial structure.

[0067] A vibration damping structure-incorporated device according to one aspect of the present invention includes one or more vibration damping structures connected between a first member and a second member.

[0068] The above-mentioned one or more vibration-damping structures are respectively the vibration-damping structures described in Technical Solution 1, which are connected to the above-mentioned first component in a manner that a specified position of the above-mentioned first supporting component is a first vibration action point, and are connected to the above-mentioned second component in a manner that a position of the above-mentioned first supporting component away from the above-mentioned first vibration action point is a second vibration action point.

[0069] The above-mentioned device incorporating the vibration damping structure may further include a first connecting mechanism and a second connecting mechanism.

[0070] The first connection mechanism connects the first component to the one or more vibration damping structures, respectively, so that when vibration in the first direction occurs from the first component, the vibration generated from the first component is input to the first vibration application point.

[0071] The second connection mechanism connects the second member to the one or more vibration damping structures, respectively, so that when vibration in the first direction occurs from the second member, the vibration generated from the second member is input to the second vibration application point.

[0072] The one or more vibration damping structures may each include a plurality of vibration damping units arranged in a second direction orthogonal to the first direction as the one or more vibration damping units. In this case, the one or more vibration damping structures may each be connected to the first member in such a manner that the position of the end of one side of the first supporting member in the second direction is the first vibration action point. In addition, the one or more vibration damping structures may each be connected to the second member in such a manner that the position of the end of the other side of the first supporting member in the second direction is the second vibration action point.

[0073] The one or more vibration damping structures may be a plurality of vibration damping structures arranged in a manner of being arranged along a third direction orthogonal to the first direction and the second direction, and arranged in a manner of coinciding the positions of the two ends in the second direction when viewed from the third direction. In this case, the plurality of vibration damping structures may be arranged alternately along the third direction when viewed from the third direction, with the first vibration damping structure being connected to the first component in a manner of the end position on the first side being the first vibration application point, and being connected to the second component in a manner of the end position on the second side opposite to the first side being the second vibration application point, and the second vibration damping structure being connected to the first component in a manner of the end position on the second side being the first vibration application point, and being connected to the second component in a manner of the end position on the first side being the second vibration application point.

[0074] The one or more vibration damping structures may each include a plurality of vibration damping units arranged along a second direction orthogonal to the first direction as the one or more vibration damping units. In this case, the one or more vibration damping structures may each be connected to the first member in such a manner that the center position of the first supporting member in the second direction is the first vibration action point. In addition, the one or more vibration damping structures may each be connected to the second supporting member in such a manner that the position of at least one end of the first member in the second direction is the second vibration action point.

[0075] Effects of the Invention

[0076] As described above, according to the present invention, a high vibration reduction function can be exerted. In addition, the effects described here are not necessarily limited, and may be any effect described in the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 This is a schematic diagram when the vibration damping structure according to one embodiment of the present invention is viewed along the depth direction (Y direction).

[0078] Figure 2 It's a picture. Figure 1 A diagram showing a portion of the vibration damping structure shown.

[0079] Figure 3 It is a schematic diagram showing the vibration reduction unit located at the endmost portion on the left side among the three vibration reduction units.

[0080] Figure 4 This is a schematic diagram showing the operation of attenuating the vibration in the up-down direction (Z direction) by the vibration damping structure (first vibration displacement).

[0081] Figure 5 This is a schematic diagram showing the operation of attenuating the vibration in the up-down direction (Z direction) by the vibration reduction unit (second vibration displacement).

[0082] Figure 6 This is a schematic diagram showing the operation of attenuating the vibration in the up-down direction (Z direction) by the vibration damping structure (first vibration displacement).

[0083] Figure 7 This is a schematic diagram showing the operation of attenuating the vibration in the up-down direction (Z direction) by the vibration reduction unit (second vibration displacement).

[0084] Figure 8 It is a schematic diagram showing an example of arrangement of weights with respect to the vibration reduction unit.

[0085] Fig. 9 It is a schematic diagram showing an example of arrangement of weights with respect to the vibration reduction unit.

[0086] Fig.10 It is a schematic diagram showing an example of arrangement of weights with respect to the vibration reduction unit.

[0087] Fig.11 It means use Figure 8 to Figure 10 Graph showing vibration attenuation with respect to the frequency of vibration in the up-down direction (Z direction) in the case of the vibration reduction unit shown.

[0088] Fig.12 FIG. 1 is a schematic diagram showing another example of arrangement of weights with respect to the vibration reduction unit.

[0089] Fig.13 FIG. 1 is a schematic diagram showing another example of arrangement of weights with respect to the vibration reduction unit.

[0090] Fig.14 FIG. 1 is a schematic diagram showing another example of arrangement of weights with respect to the vibration reduction unit.

[0091] Fig.15 FIG. 1 is a schematic diagram showing another example of arrangement of weights with respect to the vibration reduction unit.

[0092] Fig.16 This is a graph showing vibration attenuation with respect to the frequency of vibration in the up-down direction (Z direction) when the dimensions of the first to twelfth hinges in the left-right direction (X direction) are changed.

[0093] Fig.17 It is a schematic diagram showing another structural example of the reinforcing member.

[0094] Fig.18 It is a schematic diagram showing another structural example of the reinforcing member.

[0095] Fig.19It is a schematic diagram showing another structural example of the vibration reduction unit.

[0096] Fig. 20 It is a schematic diagram showing another structural example of the reinforcing member.

[0097] Fig.21 It is a schematic diagram showing another structural example of the reinforcing member.

[0098] Fig. 22 It is a schematic diagram showing a schematic configuration example of a vibration damping device according to an embodiment of the present invention.

[0099] Fig.23 It is a schematic diagram (perspective diagram) showing another structural example of the vibration damping device.

[0100] Fig.24 It is a schematic diagram (front view) showing another structural example of the vibration damping device.

[0101] Fig.25 It is a schematic diagram (side view) showing another structural example of the vibration damping device.

[0102] Fig.26 It is a schematic diagram (front view) showing another structural example of the vibration damping device.

[0103] Fig. 27 This is a schematic diagram showing an example of installation of a plurality of vibration damping devices.

[0104] Fig.28 It is a schematic diagram showing another structural example of the vibration damping structure.

[0105] Fig.29 It is a schematic diagram showing another structural example of the vibration damping structure.

[0106] Fig.30 It is a schematic diagram showing another structural example of the vibration damping structure.

[0107] Fig.31 This is an enlarged view showing a portion of the third hinge in an enlarged manner. DETAILED DESCRIPTION

[0108] Below, while referring to the attached Figure 1 Embodiments of the present invention will be described below.

[0109] [Structure of the vibration damping structure]

[0110] Reference Figure 1 to Figure 3 The structure of a vibration damping structure according to one embodiment of the present invention will be described. The vibration damping structure may also be referred to as a vibration damping mechanism.

[0111] In order to facilitate the understanding of the description, the left-right direction, the depth direction, and the up-down direction are conveniently defined for the vibration damping structure 1. Specifically, the X direction in the figure is set as the left-right direction (the positive side of the X axis is the right side, and the negative side is the left side), and the Y direction in the figure is set as the depth direction (the positive side of the Y axis is the back side, and the negative side is the front side). In addition, the Z direction in the figure is set as the up-down direction (the positive side of the Z axis is the upper side, and the negative side is the lower side).

[0112] Of course, regarding the application of this technology, there is no limitation on the direction of arranging the vibration damping structure 1. Also, regarding the vibration damping structure 1, there is no limitation on which part is the front side part and which part is the side side part.

[0113] Figure 1 It is a schematic diagram when the vibration damping structure 1 is viewed from the depth direction (Y direction).

[0114] Figure 2 is Figure 1 The vibration damping structure 1 shown in the figure only shows the predetermined parts. Figure 2 , among the parts of the vibration damping structure 1, the first support member 2, the second support member 3, and three vibration damping units 4 (4a to 4c) are shown.

[0115] Figure 3 1 is a schematic diagram showing a vibration reduction unit 4 a located at the leftmost end portion among the three vibration reduction units 4 .

[0116] In this embodiment, the up-down direction (Z direction) corresponds to an embodiment of the first direction of the present technology. The left-right direction (X direction) corresponds to an embodiment of the second direction orthogonal to the first direction. The depth direction (Y direction) corresponds to an embodiment of the third direction orthogonal to the first direction and the second direction.

[0117] The three vibration damping units 4a to 4c correspond to one embodiment of one or more vibration damping units according to the present technique.

[0118] like Figure 1 and Figure 2 As shown, the vibration damping structure 1 includes a first support member 2 , a second support member 3 , three vibration damping units 4 a to 4 c , a reinforcement member 5 , an upper skin member 6 , and a lower skin member 7 .

[0119] The first supporting member 2 is a plate-shaped member extending in the X direction.

[0120] The second support member 3 is a plate-like member extending in the X direction with the same length as the first support member 2, and is arranged to face the first support member 2 in the Z direction. The first support member 2 and the second support member 3 have mutually identical shapes.

[0121] The first supporting member 2 and the second supporting member 3 are plate-like members that are identical to each other and are arranged to face each other in the Z direction or to be parallel to each other in the X direction.

[0122] The dimension (thickness) of the first supporting member 2 and the second supporting member 3 in the depth direction (Y direction) is not limited and can be arbitrarily designed. Figure 1 The vibration damping structure 1 is constituted by a thickness of about 1 / 8 of the dimension of the vibration damping structure 1 in the vertical direction (Z direction). Therefore, the vibration damping structure 1 has a general outer shape of a plate-like member.

[0123] The present invention is not limited thereto, and the thickness (dimension in the Y direction) of the vibration damping structure 1 may be designed to be approximately the same as the dimension in the vertical direction (Z direction) of the vibration damping structure 1. In this case, the general outer shape of the vibration damping structure 1 is a rectangular parallelepiped shape (block shape).

[0124] The three vibration damping units 4 a to 4 c are disposed between the first supporting member 2 and the second supporting member 3 , and suppress vibration in the up-down direction (Z direction) acting on the first supporting member 2 and the second supporting member 3 .

[0125] For example, assuming that the first supporting member 2 and the second supporting member 3 vibrate at a predetermined vibration frequency (frequency) in the vertical direction (Z direction) due to external force, the three vibration-damping units 4a to 4c are deformed in accordance with the vibration of the first supporting member 2 and the second supporting member 3 in the vertical direction (Z direction), and can attenuate the vibration in the vertical direction (Z direction).

[0126] In this embodiment, the thickness (dimension in the Y direction) of the three vibration-damping units 4a to 4c is designed to be the same as the thickness of the first supporting member 2 and the second supporting member 3. Of course, the thickness of the vibration-damping unit 4 may be designed to be different from the thickness of the first supporting member 2 and the second supporting member 3.

[0127] The reinforcing member 5 is connected between the first supporting member 2 and the second supporting member 3 so as to surround the three vibration damping units 4a to 4c, thereby reinforcing the rigidity of the vibration damping structure 1. The reinforcing member 5 may also be referred to as an outer wall portion.

[0128] like Figure 1 and Figure 3 As shown, in this embodiment, the reinforcing member 5 is composed of a truss structure. The truss structure is a type of structural form based on structural mechanics, and is a structure that reduces stress caused by external force by forming a triangle in the structure.

[0129] In this embodiment, the thickness (dimension in the Y direction) of the reinforcing member 5 is designed to be the same as that of the first supporting member 2 and the second supporting member 3. Of course, the thickness of the reinforcing member 5 may be designed to be different from that of the first supporting member 2 and the second supporting member 3.

[0130] For example, the first supporting member 2 , the second supporting member 3 , the vibration damping unit 4 , and the reinforcing member 5 may all be designed to have different thicknesses.

[0131] The upper surface member 6 is formed of a plate-shaped member and is connected to the upper side of the first supporting member 2 .

[0132] The lower surface member 7 is formed of a plate-shaped member and is connected to the lower side of the second supporting member 3 .

[0133] By extending the upper skin member 6 and the lower skin member 7 above and below the vibration damping structure 1 , the rigidity of the vibration damping structure 1 can be enhanced.

[0134] [First Supporting Member 2 and Second Supporting Member 3]

[0135] like Figure 1 and Figure 2 As shown, in this embodiment, in the left-right direction (X direction), the position of the left end 2a of the first supporting member 2 is aligned with the position of the left end 3a of the second supporting member 3. In addition, in the X direction, the position of the right end 2b of the first supporting member 2 is aligned with the position of the right end 3b of the second supporting member 3.

[0136] When the vibration damping structure 1 is viewed from the top and bottom direction (Z direction), the left end 2a of the first supporting member 2 and the left end 3a of the second supporting member 3 are located at the same position. Also, when viewed from the top and bottom direction (Z direction), the right end 2b of the first supporting member 2 and the right end 3b of the second supporting member 3 are located at the same position.

[0137] Three first connection reference positions 9 (9a to 9c) are set on the first support member 2 as references when connecting the three vibration reduction units 4a to 4c. In the present embodiment, the first connection reference positions 9a to 9c are set at equal intervals from the left end 2a of the first support member 2.

[0138] The first connection reference position 9a at the leftmost end is a reference position for connecting the vibration reduction unit 4a at the leftmost end. The first connection reference position 9b at the center is a reference position for connecting the vibration reduction unit 4b at the center. The first connection reference position 9c at the rightmost end is a reference position for connecting the vibration reduction unit 4c at the rightmost end.

[0139] In addition, the "connection" between components in the present disclosure is not limited to the case where the components to be connected are directly connected, and includes the case where they are connected via other physical components. For example, the connection between component A and component B also includes the form in which component A and component B are connected via other components such as hinges. In other words, it also includes the connection form in which other components such as hinges are sandwiched between component A and component B. In addition, "connection" includes not only the form in which components are fixed to each other via adhesives or screws, but also includes the contact and abutment between components such as when other components are placed on top of a component.

[0140] Three second connection reference positions 10 (10a to 10c) serving as references when connecting the three vibration-damping units 4a to 4c are set on the second support member 3. In the present embodiment, the second connection reference positions 10a to 10c are set at equal intervals from the left end 3a of the second support member 3.

[0141] The second connection reference position 10a at the leftmost end is a reference position for connecting the vibration reduction unit 4a at the leftmost end. The second connection reference position 10b at the center is a reference position for connecting the vibration reduction unit 4b at the center. The first connection reference position 10c at the rightmost end is a reference position for connecting the vibration reduction unit 4c at the rightmost end.

[0142] like Figure 1 to Figure 3 As shown, in the left-right direction (X direction), the first connection reference position 9a and the second connection reference position 10a are located at the same position. In addition, in the left-right direction (X direction), the first connection reference position 9b and the second connection reference position 10b are located at the same position. In the left-right direction (X direction), the first connection reference position 9c and the second connection reference position 10c are located at the same position.

[0143] When observing the vibration damping structure 1 from the top and bottom direction (Z direction), the pairs of (1st connection reference position 9a, 2nd connection reference position 10a), (1st connection reference position 9b, 2nd connection reference position 10b), and (1st connection reference position 9c, 2nd connection reference position 10c) are in the same positions as each other.

[0144] like Figure 1 to Figure 3 As shown, the imaginary lines connecting each pair of (1st connection reference position 9a, 2nd connection reference position 10a), (1st connection reference position 9b, 2nd connection reference position 10b), (1st connection reference position 9c, 2nd connection reference position 10c) are assumed to be reference lines RLa~RLc. Reference lines RLa~RLc are lines extending in the up and down directions (Z direction), respectively.

[0145] [3 vibration reduction units 4a to 4c]

[0146] like Figure 1 and Figure 2 As shown, the three vibration-damping units 4a to 4c are arranged in a left-right direction (X direction) orthogonal to the up-down direction (Z direction). In the present embodiment, the three vibration-damping units 4a to 4c have the same shape as each other. Hereinafter, the vibration-damping unit 4a at the end on the left side will be described with the three vibration-damping units 4a to 4c as representatives.

[0147] The description of the vibration reduction unit 4 a described below is also applicable to each of the three vibration reduction units 4 a to 4 c.

[0148] like Figure 2 and Figure 3 As shown in FIG. 1 , in the present embodiment, the vibration reduction unit 4a is configured to be symmetrical with respect to the reference line RLa. That is, the vibration reduction unit 4a is configured to be line-symmetrical with respect to the reference line RLa.

[0149] like Figure 2 and Figure 3 As shown, the vibration damping unit 4 a includes a first vibration damping core unit 12 , a second vibration damping core unit 13 , and a vibration damping driving member 14 .

[0150] The first damping core unit 12 and the second damping core unit 13 have the same shape. The vibration damping driving member 14 is disposed between the first damping core unit 12 and the second damping core unit 13 and connected to each of the first damping core unit 12 and the second damping core unit 13 .

[0151] like Figure 1 to Figure 3 As shown, the vibration suppression driving member 14 is disposed at a central position (position of a virtual center line CL) of the vibration suppression structure 1 in the vertical direction (Z direction).

[0152] [First vibration damping core unit 12]

[0153] like Figure 3 As shown, the first vibration damping core unit 12 has a general shape viewed from the depth direction (Y direction) and is configured as a rhombus with the vertical direction (Z direction) as the major axis direction and the left-right direction (X direction) as the minor axis direction. In addition, the first vibration damping core unit 12 is composed of four rotating parts 15 (first to fourth rotating parts 15a to 15d). The first to fourth rotating parts 15a to 15d are arranged in a symmetrical manner with respect to the center CP1 of the first vibration damping core unit 12.

[0154] like Figure 3As shown, the first to fourth rotating parts 15a to 15d have a trapezoidal shape close to a triangle when viewed from the depth direction (Y direction). The first to fourth rotating parts 15a to 15d have mutually identical shapes, and their up-down and left-right directions are appropriately set so as to be arranged symmetrically with respect to the center CP1.

[0155] like Figure 3 As shown in FIG. 1 , the first rotating member 15a is arranged at the upper right position when viewed from the depth direction (Y direction). The first rotating member 15a has a first side portion 16a-1 extending in the left-right direction (X direction), and a second side portion 16b-1 also extending in the left-right direction (X direction) and facing the first side portion 16a-1 in the up-down direction (Z direction). In addition, the first side portion 16a-1 becomes the upper side portion of the first damping core unit 12.

[0156] The first side 16a-1 and the second side 16b-1 are arranged so that their left ends are at the same position in the left-right direction (X direction). The right end of the second side 16b-1 is located to the right of the right end of the first side 16a-1.

[0157] Furthermore, the first rotating member 15a has a third side 16c-1 extending in the up-down direction (Z direction) and connecting the left end of the first side 16a-1 and the left end of the second side 16b-1. Furthermore, the first rotating member 15a has a fourth side 16d-1 connecting the right end of the first side 16a-1 and the right end of the second side 16b-1 and extending obliquely to the lower right side.

[0158] When the first rotating member 15a is viewed in the depth direction (Y direction), the first side 16a-1 corresponds to the upper side of the trapezoid, the second side 16b-1 corresponds to the lower side, the third side 16c-1 corresponds to the left side of the trapezoid, and the fourth side 16d-1 corresponds to the right side.

[0159] The second rotating member 15b has the same structure as the case where the first rotating member 15a is reversed left and right and then parallel-moved to the left.

[0160] The first side 16a - 2 of the second rotating member 15b extends in the left-right direction (X direction) and is located in the same straight line as the first side 16a - 1 of the first rotating member 15a . Therefore, the first side 16a - 2 of the second rotating member 15b is also the upper side of the first damping core unit 12 .

[0161] The second side portion 16 b - 2 of the second rotating member 15 b extends in the left-right direction (X direction) and is located in the same straight line as the second side portion 16 b - 1 of the first rotating member 15 a .

[0162] The third side 16c-2 of the second rotating member 15b extends in the vertical direction (Z direction) and is disposed opposite to the third side 16c-1 of the first rotating member 15 at a predetermined distance (clearance) in the horizontal direction (X direction).

[0163] The third side 16c-2 is arranged at a position line-symmetrical to the third side 16c-1 with reference to the reference line Rla. Therefore, in the left-right direction (X direction), the distance from the third side 16c-1 to the reference line RLa is equal to the distance from the third side 16c-2 to the reference line RLa.

[0164] The fourth side portion 16d-2 of the second rotating member 15b connects the left end portion of the first side portion 16a-2 and the left end portion of the second side portion 16b-2, and extends obliquely to the lower left side.

[0165] When the second rotating member 15b is viewed in the depth direction (Y direction), the first side 16a-2 corresponds to the upper side of the trapezoid, the second side 16b-2 corresponds to the lower side, the third side 16c-2 corresponds to the right side of the trapezoid, and the fourth side 16d-2 corresponds to the left side.

[0166] The third rotating member 15c has the same structure as that of the first rotating member 15a which is reversed upside down and parallel-moved downward.

[0167] The first side portion 16 a - 3 of the third rotating member 15 c extends in the left-right direction (X direction) and serves as a lower side portion of the first damping core unit 12 .

[0168] The second side 16b-3 of the third rotating member 15c extends in the left-right direction (X direction) and is arranged to face the second side 16b-1 of the first rotating member 15a at a predetermined distance in the up-down direction (Z direction).

[0169] The second side portion 16b-3 is disposed at a position line-symmetrical to the second side portion 16b-1 with respect to an imaginary line (not shown) extending in the left-right direction (X direction) through the center CP1 of the first damping core unit 12.

[0170] The third side 16c-3 of the third rotating member 15c extends in the vertical direction (Z direction) and is positioned in the same straight line as the third side 16c-1 of the first rotating member 15a. The fourth side 16d-3 of the third rotating member 15c connects the right end of the first side 16a-3 and the right end of the second side 16b-3 and extends obliquely to the upper right side.

[0171] When the third rotating member 15c is viewed in the depth direction (Y direction), the first side 16a-3 corresponds to the lower side of the trapezoid, the second side 16b-3 corresponds to the upper side, the third side 16c-3 corresponds to the left side of the trapezoid, and the fourth side 16d-3 corresponds to the right side.

[0172] The fourth rotating member 15d has the same structure as the case where the third rotating member 15c is reversed left and right and then parallel-moved to the left.

[0173] The first side 16a-4 of the fourth rotating member 15d extends in the left-right direction (X direction) and is positioned in the same straight line as the first side 16a-3 of the third rotating member 15c. The first side 16a-1 of the fourth rotating member 15d is also the lower side of the first damping core unit 12.

[0174] The second side 16b-4 of the fourth rotating member 15d extends in the left-right direction (X direction) and is positioned in the same straight line as the second side 16b-3 of the third rotating member 15c. In addition, the second side 16b-4 of the fourth rotating member 15d is arranged at a position opposite to the second side 16b-2 of the second rotating member 15b at a distance in the up-down direction (Z direction).

[0175] The distance between the second side 16b-4 of the fourth rotating member 15d and the second side 16b-2 of the second rotating member 15b is equal to the distance between the second side 16b-1 of the first rotating member 15a and the second side 16b-3 of the third rotating member 15c.

[0176] The third side 16c-4 of the fourth rotating member 15d extends in the vertical direction (Z direction) and is arranged at a position opposed to the third side 16c-3 of the third rotating member 15c at a distance in the horizontal direction (X direction). In addition, the third side 16c-4 of the fourth rotating member 15d is positioned in the same straight line as the third side 16c-2 of the second rotating member 15b.

[0177] The distance between the third side 16c-4 of the fourth rotating member 15d and the third side 16c-2 of the third rotating member 15c is equal to the distance between the third side 16c-1 of the first rotating member 15a and the second side 16b-2 of the second rotating member 15b.

[0178] The fourth side portion 16d-4 of the fourth rotating member 15d connects the left end portion of the first side portion 16a-4 and the left end portion of the second side portion 16b-4, and extends obliquely to the upper left side.

[0179] When the fourth rotating member 15d is viewed in the depth direction (Y direction), the first side 16a-4 corresponds to the lower side of the trapezoid, the second side 16b-4 corresponds to the upper side, the third side 16c-4 corresponds to the right side of the trapezoid, and the fourth side 16d-4 corresponds to the left side.

[0180] [Second vibration damping core unit 13]

[0181] The second damping core unit 13 according to the present embodiment has the same shape as the first damping core unit 12 and is composed of four rotating members 17 (fifth to eighth rotating members 17a to 17d). The fifth to eighth rotating members 17a to 17d are arranged symmetrically with respect to the center CP2 of the second damping core unit 13.

[0182] The second damping core unit 13 has the same structure as the case where the first damping core unit 12 is moved in parallel downward.

[0183] like Figure 3 As shown, assuming that the first damping core unit 12 is moved parallel downward, the first rotating member 15a of the first damping core unit 12 corresponds to the seventh rotating member 17c of the second damping core unit 13. The second rotating member 15b of the first damping core unit 12 corresponds to the eighth rotating member 17d of the second damping core unit 13.

[0184] The third rotating member 15 c of the first damping core unit 12 corresponds to the fifth rotating member 17 a of the second damping core unit 13 , and the fourth rotating member 15 d of the first damping core unit 12 corresponds to the sixth rotating member 17 b of the second damping core unit 13 .

[0185] The first side 18a-7 of the seventh rotating member 17c and the first side 18a-8 of the eighth rotating member 17d form the upper side of the second damping core unit 13. The first side 18a-5 of the fifth rotating member 17a and the first side 18a-6 of the sixth rotating member 17b form the lower side of the second damping core unit 13.

[0186] The first damping core unit 12 and the second damping core unit 13 are arranged at positions symmetrical to the center position (position of the imaginary center line CL) of the vibration damping structure 1 in the up-down direction (Z direction).

[0187] Therefore, the vibration-damping driving member 14 is disposed at a position intermediate between the lower side (first side 16 a - 3 and 16 a - 4 ) of the first vibration-damping core unit 12 and the upper side (first side 18 a - 7 and 18 a - 8 ) of the second vibration-damping core unit 13 .

[0188] In other words, the distance between the lower side (first side 16a-3 and 16a-4) of the first damping core unit 12 and the damping drive member 14 and the distance between the upper side (first side 18a-7 and 18a-8) of the second damping core unit 13 and the damping drive member 14 are equal to each other.

[0189] [Hinge mechanism]

[0190] like Figure 3 As shown, the first damping core unit 12 and the second damping core unit 13 are connected to other components via a hinge mechanism. That is, the first damping core unit 12 is connected between the first support member 2 and the damping drive member 14 via a hinge mechanism. The second damping core unit 13 is also connected between the second support member 3 and the damping drive member 14 via a hinge mechanism.

[0191] thus, Figure 3 The vibration damping structure 1 shown has a structure in which a first vibration damping core unit 12 and a second vibration damping core unit 13 are connected to each other via a vibration damping driving member 14 and a hinge mechanism.

[0192] In the present embodiment, the hinge mechanism is composed of twelve hinges 20 (first to twelfth hinges 20a to 201).

[0193] like Figure 3 As shown, the 1st hinge 20a, the 2nd hinge 20b, the 3rd hinge 20c, the 4th hinge 20d, the 5th hinge 20e, the 6th hinge 20f, the 7th hinge 20g, the 8th hinge 20h, the 9th hinge 20i, the 10th hinge 20j, the 11th hinge 20k and the 12th hinge 20l are respectively composed of thin-walled parts extending in the up-down direction (Z direction) and having a relatively small size of a cross section (a cross section when cut in the XY plane) orthogonal to the up-down direction (Z direction).

[0194] like Figure 3 As shown in FIG. 1 , the first rotating member 15a of the first damping core unit 12 is connected to the first supporting member 2 via a first hinge 20a. In addition, the second rotating member 15b is connected to the first supporting member 2 via a second hinge 20b.

[0195] The first hinge 20a and the second hinge 20b are connected to positions near each other based on the first connection reference position 9a. Specifically, the first hinge 20a and the second hinge 20b are connected near the first connection reference position 9a so that the first connection reference position 9a (the position of the reference line RLa) becomes the middle.

[0196] The first hinge 20a is connected to the right side of the first connection reference position 9a, and the second hinge 20b is connected to the left side of the first connection reference position 9b. The first hinge 20a and the second hinge 20b are connected at positions symmetrical to each other with respect to the first connection reference position 9a.

[0197] In addition, in the present embodiment, a connecting member 21a is constructed below the first connection reference position 9a of the first supporting member 2. Therefore, it can be said that the first hinge 20a and the second hinge 20b are connected to the first supporting member 2 via the connecting member 21a. Of course, the connecting member 21a can also be regarded as a component included in the first supporting member 2.

[0198] The first hinge 20a is connected to the left end of the first side portion 16a-1 of the first rotating member 15a. The second hinge 20b is connected to the right end of the first side portion 16a-2 of the second rotating member 15b.

[0199] The third rotating member 15c is connected to the first rotating member 15a via the third hinge 20c arranged at a position different from the first hinge 20a when viewed from the up-down direction (Z direction). The third hinge 20c is connected between a position near the right end of the second side 16b-1 of the first rotating member 15a and a position near the right end of the second side 16b-3 of the third rotating member 15c.

[0200] In this embodiment, the first hinge 20a and the third hinge 20c are arranged at different positions in the left-right direction (X direction). Specifically, the third hinge 20c is arranged on the right side of the first hinge 20a.

[0201] The fourth rotating member 15d is connected to the second rotating member 15b via the fourth hinge 20d arranged at a position different from the second hinge 20b when viewed from the up-down direction (Z direction). The fourth hinge 20d is connected between a position near the left end of the second side 16b-2 of the second rotating member 15b and a position near the left end of the second side 16b-4 of the fourth rotating member 15d.

[0202] In this embodiment, the second hinge 20b and the fourth hinge 20d are arranged so that their positions in the left-right direction (X direction) are different from each other. Specifically, the fourth hinge 20d is arranged at a position further to the left than the second hinge 20b.

[0203] Furthermore, the third hinge 20c and the fourth hinge 20d are arranged at positions symmetrical to each other with respect to the first connection reference position 9a (position of the reference line CLa).

[0204] The third rotating member 15c is connected to a ninth hinge 20i disposed at a position different from the third hinge 20c when viewed from the up-down direction (Z direction). The third rotating member 15c is connected to the vibration reduction driving member 14 via the ninth hinge 20i.

[0205] like Figure 3 As shown, the ninth hinge 20i is connected to the left end of the first side portion 16a-3 of the third rotating member 15c. That is, the ninth hinge 20i is arranged at a position different from that of the third hinge 20c in the left-right direction (X direction).

[0206] On the other hand, the ninth hinge 20i is arranged at the same position as the first hinge 20a in the left-right direction (X direction). That is, the ninth hinge 20i is arranged at the same position as the first hinge 20a when viewed from the up-down direction (Z direction).

[0207] The fourth rotating member 15d is connected to a tenth hinge 20j that is arranged at a position different from the fourth hinge 20c when viewed from the up-down direction (Z direction). The fourth rotating member 15d is connected to the vibration reduction driving member 14 via the tenth hinge 20j.

[0208] like Figure 3 As shown, the tenth hinge 20j is connected to the right end of the first side portion 16a-4 of the fourth rotating member 15d. That is, the tenth hinge 20j is arranged at a position different from that of the fourth hinge 20c in the left-right direction (X direction).

[0209] On the other hand, the tenth hinge 20j is arranged at the same position as the second hinge 20b in the left-right direction (X direction). That is, the tenth hinge 20j is arranged at the same position as the second hinge 20b when viewed from the top-bottom direction (Z direction).

[0210] Therefore, the ninth hinge 20i and the tenth hinge 20j are arranged at positions symmetrical to each other with respect to the first connection reference position 9a (position of the reference line CLa).

[0211] like Figure 3 As shown in FIG. 1 , the fifth rotating member 17a of the second damping core unit 13 is connected to the second supporting member 3 via a fifth hinge 20e. In addition, the sixth rotating member 17b is connected to the second supporting member 3 via a sixth hinge 20f.

[0212] The fifth hinge 20e and the sixth hinge 20f are connected at positions close to each other based on the second connection reference position 10a (the position of the reference line CLa). Specifically, the fifth hinge 20e and the sixth hinge 20f are connected near the second connection reference position 10a with the second connection reference position 10a (the position of the reference line CL) as the center.

[0213] The fifth hinge 20e is connected to the right side of the second connection reference position 10a, and the sixth hinge 20f is connected to the left side of the second connection reference position. The fifth hinge 20e and the sixth hinge 20f are connected at positions symmetrical to each other with respect to the second connection reference position 10a.

[0214] Furthermore, the fifth hinge 20e is arranged at the same position as the first hinge 20a and the ninth hinge 20i when viewed from the up-down direction (Z direction).

[0215] Furthermore, the sixth hinge 20f is arranged at the same position as the second hinge 20b and the tenth hinge 20j when viewed from the up-down direction (Z direction).

[0216] In addition, in the present embodiment, a connecting member 21b is constructed on the upper side of the second connection reference position 10a of the second supporting member 3. Therefore, it can be said that the fifth hinge 20e and the sixth hinge 20f are connected to the second supporting member 3 via the connecting member 21b. Of course, the connecting member 21b can also be regarded as a component included in the second supporting member 3.

[0217] The fifth hinge 20e is connected to the left end of the first side 18a-5 of the fifth rotating member 17a. The sixth hinge 20f is connected to the right end of the first side 18a-6 of the sixth rotating member 17b.

[0218] The seventh rotating member 17c is connected to the fifth rotating member 17a via the seventh hinge 20g disposed at a position different from the fifth hinge 20e when viewed from the up-down direction (Z direction). The seventh hinge 20g is connected between a position near the right end of the second side 18b-5 of the fifth rotating member 17a and a position near the right end of the second side 18b-7 of the seventh rotating member 17c.

[0219] In this embodiment, the fifth hinge 20e and the seventh hinge 20g are arranged so that the positions in the left-right direction (X direction) are different from each other. Specifically, the seventh hinge 20g is arranged at a position closer to the right side than the fifth hinge 20e. In addition, the seventh hinge 20g is arranged at the same position as the third hinge 20c when viewed from the top-bottom direction (Z direction).

[0220] The eighth rotating member 17d is connected to the sixth rotating member 17b via the eighth hinge 20h disposed at a position different from the sixth hinge 20f when viewed from the up-down direction (Z direction). The eighth hinge 20h is connected between a position near the left end of the second side 18b-6 of the sixth rotating member 17b and a position near the left end of the second side 18b-8 of the eighth rotating member 17d.

[0221] In this embodiment, the sixth hinge 20f and the eighth hinge 20h are arranged so that their positions in the left-right direction (X direction) are different from each other. Specifically, the eighth hinge 20h is arranged at a position on the left side of the sixth hinge 20f. In addition, the eighth hinge 20h is arranged at the same position as the fourth hinge 20c when viewed from the top-bottom direction (Z direction).

[0222] Furthermore, the seventh hinge 20g and the eighth hinge 20h are arranged at positions symmetrical to each other with respect to the second connection reference position 10a (position of the reference line CLa).

[0223] The seventh rotating member 17c is connected to an eleventh hinge 20k which is arranged at a position different from the seventh hinge 20g when viewed from the up-down direction (Z direction). The seventh rotating member 17c is connected to the vibration reduction driving member 14 via the eleventh hinge 20k.

[0224] like Figure 3 As shown, the 11th hinge 20k is connected to the left end of the first side portion 18a-7 of the seventh rotating member 17c. That is, the 11th hinge 20k is arranged at a position different from that of the seventh hinge 20g in the left-right direction (X direction).

[0225] On the other hand, the 11th hinge 20k is arranged at the same position as the 5th hinge 20e in the left-right direction (X direction). That is, the 11th hinge 20k is arranged at the same position as the 5th hinge 20e when viewed from the up-down direction (Z direction).

[0226] The eighth rotating member 17d is connected to the twelfth hinge 20l which is arranged at a position different from the eighth hinge 20h when viewed from the up-down direction (Z direction). The eighth rotating member 17d is connected to the vibration reduction driving member 14 via the twelfth hinge 20l.

[0227] like Figure 3 As shown, the twelfth hinge 201 is connected to the right end of the first side portion 18a-8 of the eighth rotating member 17d. That is, the twelfth hinge 201 is arranged at a position different from that of the eighth hinge 20h in the left-right direction (X direction).

[0228] On the other hand, the 12th hinge 201 is arranged at the same position as the 6th hinge 20f in the left-right direction (X direction). That is, the 12th hinge 201 is arranged at the same position as the 6th hinge 20f when viewed from the up-down direction (Z direction).

[0229] Therefore, the 11th hinge 20k and the 12th hinge 20j are arranged at positions symmetrical to each other with respect to the second connection reference position 10a (position of the reference line CLa).

[0230] The vibration-damping driving member 14 is a plate-shaped member extending in the left-right direction (X direction), and is disposed at a center position between the first connection reference position 9 a and the second connection reference position 10 a (position of the reference line CLa).

[0231] A ninth hinge 20i is connected to the upper side of the right end portion of the vibration-damping drive member 14, and an eleventh hinge 20k is connected to the lower side of the right end portion.

[0232] The tenth hinge 20j is connected to the upper side of the left end portion of the vibration-damping drive member 14, and the twelfth hinge 201 is connected to the lower side of the left end portion.

[0233] The first and second vibration damping core units 12 and 13 are connected to each other via the ninth and tenth hinges 20i and 20j, the vibration damping driving member 14, and the eleventh and twelfth hinges 20k and 20l.

[0234] like Figure 3 As shown, an opening portion (hollow portion) 22a extending in the left-right direction (X direction) is formed between the third hinge 20c and the fourth hinge 20d of the first vibration damping core unit 12. In addition, in the first vibration damping core unit 12, an opening portion 22b extending in the up-down direction (Z direction) is formed between the first connection reference position 9a (connection member 21a) and the vibration damping drive member 14.

[0235] The openings 22a and 22b intersect at a right angle at the center CP1 of the first damping core unit 12. Therefore, a cross-shaped opening is formed in the inner region of the first damping core unit 12.

[0236] like Figure 3 As shown, an opening 23a extending in the left-right direction (X direction) is formed between the seventh hinge 20g and the eighth hinge 20h of the second vibration damping core unit 13. In addition, in the second vibration damping core unit 13, an opening 23b extending in the up-down direction (Z direction) is formed between the second connection reference position 10a (connection member 21b) and the vibration damping driving member 14.

[0237] The openings 23a and 23b intersect at a right angle at the center CP2 of the second damping core unit 13. Therefore, a cross-shaped opening is formed in the inner region of the second damping core unit 13.

[0238] In the present embodiment, the vibration reduction unit 4a is configured symmetrically with respect to a reference line CLa extending in the up-down direction (Z direction).

[0239] Furthermore, when viewed from the up-down direction (Z direction), the first hinge 20a, the fifth hinge 20e, the ninth hinge 20i, and the eleventh hinge 20k are arranged at the same position.

[0240] Furthermore, when viewed from the up-down direction (Z direction), the second hinge 20b, the sixth hinge 20f, the tenth hinge 20j, and the twelfth hinge 20l are arranged at the same position.

[0241] Furthermore, when viewed from the up-down direction (Z direction), the third hinge 20c and the seventh hinge 20g are arranged at the same position.

[0242] Furthermore, when viewed from the up-down direction (Z direction), the fourth hinge 20d and the eighth hinge 20h are arranged at the same position.

[0243] In this way, by configuring the vibration reduction unit 4a to be line-symmetrical with respect to the reference line CLa serving as the center, it is possible to simplify the structure and to easily manufacture the vibration reduction unit 4a.

[0244] [Reinforcement parts]

[0245] The reinforcing member 5 is connected between the first supporting member 2 and the second supporting member 3 so as to surround the three vibration-damping units 4a to 4c, thereby reinforcing the rigidity of the vibration-damping structure 1. Figure 1 and Figure 3 As shown, in this embodiment, the reinforcing member 5 is composed of a truss structure.

[0246] In this embodiment, the reinforcing member 5 includes a longitudinal frame member 25 extending in the up-down direction (Z direction), a transverse frame member 26 extending in the left-right direction (Z direction), and a triangular diagonal frame member (diagonal support member) 27 for forming a truss structure.

[0247] The vertical frame member 25 includes a left frame member 25 a connecting the left end 2 a of the first supporting member 2 and the left end 3 a of the second supporting member 3 , and a right frame member 25 b connecting the right end 2 b of the first supporting member 2 and the right end 3 b of the second supporting member 3 .

[0248] The longitudinal frame member 25 has intermediate frame members 25c and 25d disposed between the vibration-damping units 4 arranged in the left-right direction (X direction). The intermediate frame member 25c is disposed between the vibration-damping units 4a and 4b. The intermediate frame member 25d is disposed between the vibration-damping units 4b and 4c.

[0249] like Figure 1 As shown, in the up-down direction (Z direction), reference points RP1 of a triangle for constituting the truss structure are set at the center position of the four vertical frame members 25 and at a position approximately 1 / 4 of the length.

[0250] Furthermore, a reference point RP2 of a triangle constituting the truss structure is set at a position that is the center in the vertical direction (Z direction) (position of the imaginary center line CL), that is, at a position that is a predetermined distance to the left and right of the vibration reduction drive member 14 of each vibration reduction unit 4 .

[0251] Furthermore, a reference point RP3 is set at a position on the left and right of the first connection reference position 9 (the second connection reference position 10) on the first supporting member 2 and the second supporting member 3. When viewed from the up-down direction (Z direction), the reference point RP2 set on the left and right of the vibration reduction drive member 14 and the reference point RP3 set on the left and right of the first connection reference position 9 (the second connection reference position 10) are at the same position.

[0252] The lateral frame members 26 and the oblique frame members 27 are arranged so that the reference points RP1 to RP3 become vertices of a triangle of the truss structure, and are connected to the longitudinal frame members 25 .

[0253] like Figure 3 As shown, the reinforcing members 5 (truss structure) formed in the left and right regions of one vibration damping unit 4 are formed symmetrically with respect to a reference line CL passing through the center of the vibration damping unit 4 in the left-right direction (X direction).

[0254] By configuring the reinforcement member 5 to have a truss structure, it is possible to reduce the weight of the vibration damping structure 1 while maintaining its rigidity.

[0255] As materials for the first supporting member 2, the second supporting member 3, the vibration reduction unit 4, the hinge 20 and the reinforcing member 5, for example, resin materials such as epoxy resin (EP), acrylic resin (PMMA), polyurethane resin, polycarbonate (PC), nylon resin, polyetheretherketone (PEEK), ABS resin, polytetrafluoroethylene (PTFE), phenolic resin (PF), polypropylene (PP), polystyrene, glass fiber composite, carbon fiber composite, etc. can be used.

[0256] These resin materials may be used to form the first support member 2, the second support member 3, the vibration reduction unit 4, the hinge 20, and the reinforcing member 5 by resin molding such as injection molding or extrusion molding. These elements may be formed in another process using other materials. Alternatively, they may be formed integrally in one process using the same material.

[0257] Furthermore, the first supporting member 2 , the second supporting member 3 , the vibration-damping unit 4 , the hinge 20 , and the reinforcing member 5 may be manufactured using a 3D printer.

[0258] The present invention is not limited to these, and other materials or other manufacturing methods may be used.

[0259] As Figure 1 The upper skin member 6 and the lower skin member 7 shown are made of a material that can exert high rigidity. For example, carbon fiber reinforced plastic (CFPR) can be used. Of course, it is not limited to this, and any other material can also be used.

[0260] exist Figure 1 In the illustrated example, a configuration in which three vibration damping units 4a to 4c are arranged is illustrated. The number of vibration damping units 4 arranged in the vibration damping structure 1 is not limited, and a larger number of vibration damping units 4 may be arranged.

[0261] By forming a fine periodic structure with a plurality of vibration damping units 4 (the first vibration damping core unit 12 and the second vibration damping core unit 13), the vibration damping structure 1 according to the present technology can also be formed as a metamaterial structure. Figure 1 The vibration damping structure 1 including the three vibration damping units 4 a to 4 c as shown can also be included in the metamaterial structure.

[0262] [Vibration reduction mechanism]

[0263] The vibration damping mechanism of the vibration damping structure 1 will be described.

[0264] As described above, in the vibration damping structure 1 according to the present embodiment, the vibration damping units 4 a to 4 c can suppress the vibration in the up-down direction (Z direction) acting on the first supporting member 2 and the second supporting member 3 .

[0265] For example, suppose in Figure 1 At any position in the left-right direction (X direction) of the vibration damping structure 1 shown, the vibration in the up-down direction (Z direction) is input to the first support member 2 and the second support member 3. Regardless of the position in the left-right direction (X direction) of the vibration damping structure 1 to which the vibration in the up-down direction (Z direction) is input, the vibration damping structure can function.

[0266] Various forms can be considered as the form of inputting the vibration in the up-down direction (Z direction) to the first supporting member 2 and the second supporting member 3. For example, a vibration source is connected to the first supporting member 2, and the vibration in the up-down direction (Z direction) is input from the connecting portion. As a result, the first supporting member 2 and the second supporting member 3 vibrate in the up-down direction (Z direction).

[0267] Alternatively, a vibration source is connected to the second supporting member 3, and vertical vibration (Z direction) is input from the connecting portion. As a result, the first supporting member 2 and the second supporting member 3 vibrate in the vertical direction (Z direction).

[0268] Alternatively, a vibration source may be connected to both the first supporting member 2 and the second supporting member 3 to input vibration in the up-down direction (Z direction) to the first supporting member 2 and the second supporting member 3 .

[0269] In addition, there can also be Figure 1 The case where the vibration in the vertical direction (Z direction) is input to the left end of the vibration damping structure 1 shown in the figure. In this case, for example, a vibration source is connected to a certain position (including the left ends 2a and 3a) of the left frame member 25a, and the vibration in the vertical direction (Z direction) is input to the first support member 2 and the second support member 3. Of course, there may also be a case where the vibration source is connected to the entire left frame member 25a.

[0270] In addition, there can also be Figure 1 The case where vibration in the up-down direction (Z direction) is input to the right end of the vibration damping structure 1 shown in the figure. In this case, for example, a vibration source is connected to a certain position (including the right ends 2b and 3b) of the right frame member 25b, and vibration in the up-down direction (Z direction) is input to the first support member 2 and the second support member 3. Of course, there may also be a case where the vibration source is connected to the entire right frame member 25b.

[0271] In addition, there may be a case where vibration in the vertical direction (Z direction) is input to the first supporting member 2 and the second supporting member 3 via sound waves (vibration of air, etc.). In this case, the vibration reduction function can also be exerted on the vibration in the vertical direction (Z direction) of the first supporting member 2 and the second supporting member 3.

[0272] Hereinafter, the position where the vibration in the up-down direction (Z direction) is input to the first supporting member 2 and the second supporting member 3 is recorded as the vibration input point VI. For example, the position where the displacement (amplitude) of the vibration in the up-down direction (Z direction) acting on the first supporting member 2 and the second supporting member 3 is the largest is defined as the vibration input point VI. The vibration input point VI can also be said to be the position where the vibration energy of the vibration in the up-down direction (Z direction) is the largest.

[0273] The vibration input point VI is a parameter set at the same position in the vertical direction (Z direction) of the first supporting member 2 and the second supporting member 3. Hereinafter, the vibration input point VI is described as a position defined for the first supporting member 2.

[0274] Of course, the following description also holds true if the vibration input point VI is set to a position specified for the second supporting member 3. In addition, the following description also holds true when the vibration input point VI is specified to be the same position of both the first supporting member 2 and the second supporting member 3 in the up-down direction (Z direction).

[0275] Therefore, in the following description, setting the vibration input point VI at a predetermined position of the first supporting member 2 is synonymous with setting the vibration input point VI for the second supporting member 3 and setting the vibration input point VI for both the first supporting member 2 and the second supporting member 3. Of course, the vibration input point VI to be set is at the same position in the up-down direction (Z direction).

[0276] Figures 4 to 7 Schematic diagram showing the action of attenuating the vibration in the vertical direction (Z direction) by the vibration damping structure 1. Here, the position of the left end of the vibration damping structure 1, that is, the position of the left end 2a of the first support member 2 is set as the vibration input point VI to which the vibration in the vertical direction (Z direction) is input.

[0277] In addition, Figures 4 to 7 In the figure, the upper skin member 6 and the lower skin member 7 are omitted.

[0278] Figure 4 and Figure 6 This is a diagram showing a case where the first supporting member 2 and the second supporting member 3 are displaced toward the upper side in the vertical direction (Z direction) by the vibration action in the vertical direction (Z direction). The displacement of the first supporting member 2 and the second supporting member 3 toward the upper side in the vertical direction (Z direction) caused by the vibration action in the vertical direction (Z direction) is referred to as the first vibration displacement.

[0279] Figure 5 and Figure 7 This is a diagram showing a case where the first supporting member 2 and the second supporting member 3 are displaced toward the lower side in the vertical direction (Z direction) by the vibration action in the vertical direction (Z direction). The displacement toward the lower side in the vertical direction (Z direction) of the first supporting member 2 and the second supporting member 3 caused by the vibration action in the vertical direction (Z direction) is referred to as the second vibration displacement.

[0280] In addition, Figures 4 to 7In FIG. 1 , the depth from white to black indicates the displacement at each position (part) of the vibration damping structure 1. The closer from white to black, the greater the displacement of the part. That is, the greater the displacement, the darker the black of the part is illustrated.

[0281] When the first vibration damping core unit 12 (second vibration damping core unit 13) included in each vibration damping unit 4 contains a large number of darker black parts, the first vibration damping core unit 12 (second vibration damping core unit 13) is greatly deformed by vibration in the up-down direction (Z direction). Figures 4 to 7 The displacement amounts shown were calculated by computer simulation.

[0282] Focus on the vibration reduction unit 4a located closest to the vibration input point VI, that is, at the end on the left side. Figure 4 and Figure 6 As shown, when the first vibration displacement occurs due to the vibration in the up-down direction (Z direction), the first vibration damping core unit 12 of the vibration damping unit 4a is tensilely deformed in the up-down direction (Z direction) and compressively deformed in the left-right direction (X direction) in accordance with the first vibration displacement. The first vibration damping core unit 12 has such a deformation mode in accordance with the first vibration displacement.

[0283] like Figure 6 As shown, when viewed from the depth direction (Y direction), the first rotating member 15a of the first damping core unit 12 rotates clockwise based on the first hinge 20a and the third hinge 20c. The second rotating member 15b rotates counterclockwise based on the second hinge 20b and the fourth hinge 20d. The third rotating member 15c rotates counterclockwise based on the third hinge 20c and the ninth hinge 20i. The fourth rotating member 15d rotates clockwise based on the fourth hinge 20d and the tenth hinge 20j.

[0284] By comparing the rotation amounts (displacement amounts) of the first rotating member 15a and the second rotating member 15b with the rotation amounts of the third rotating member 15c and the fourth rotating member 15d, the rotation amounts of the third rotating member 15c and the fourth rotating member 15d closer to the vibration reduction driving member 14 become larger.

[0285] The opening 22a extending in the left-right direction (X direction) of the first damping core unit 12 is deformed so as to be enlarged in the up-down direction (Z direction). The opening 22b extending in the up-down direction (Z direction) of the first damping core unit 12 is deformed so as to be reduced in the left-right direction (X direction). That is, the opening 22a is deformed so as to be opened, and the opening 22b is deformed so as to be closed.

[0286] like Figure 4 and Figure 6As shown, when the first vibration displacement occurs due to the vibration in the up-down direction (Z direction), the second vibration damping core unit 13 of the vibration damping unit 4a is compressed and deformed in the up-down direction (Z direction) and stretched and deformed in the left-right direction (X direction) in response to the first vibration displacement. The second vibration damping core unit 13 has such a deformation mode in response to the first vibration displacement.

[0287] like Figure 6 As shown, when viewed from the depth direction (Y direction), the fifth rotating member 17a of the second vibration damping core unit 13 rotates clockwise based on the fifth hinge 20e and the seventh hinge 20g. The sixth rotating member 17b rotates counterclockwise based on the sixth hinge 20f and the eighth hinge 20h. The seventh rotating member 17c rotates counterclockwise based on the seventh hinge 20g and the eleventh hinge 20k. The eighth rotating member 17d rotates clockwise based on the eighth hinge 20h and the twelfth hinge 20l.

[0288] When the rotation amounts (displacement amounts) of the fifth rotating member 17a and the sixth rotating member 17b are compared with the rotation amounts of the seventh rotating member 17c and the eighth rotating member 17d, the seventh rotating member 17c and the eighth rotating member 17d on the side closer to the vibration reduction driving member 14 have larger rotation amounts.

[0289] The opening 23a extending in the left-right direction (X direction) of the second damping core unit 13 is deformed so as to be reduced in the up-down direction (Z direction). The opening 23b extending in the up-down direction (Z direction) of the second damping core unit 13 is deformed so as to be expanded in the left-right direction (X direction). That is, the opening 23a is deformed so as to be closed, and the opening 23b is deformed so as to be opened.

[0290] like Figure 4 and Figure 6 As shown, the vibration reduction driving member 14 is displaced toward the lower side in the up-down direction (Z direction) corresponding to the first vibration displacement. That is, when the first supporting member 2 and the second supporting member 3 are displaced toward the upper side, the vibration reduction driving member 14 is displaced toward the lower side to offset the upper side direction.

[0291] like Figure 5 and Figure 7 As shown, when the second vibration displacement occurs by the vibration in the up-down direction (Z direction), the first vibration damping core unit 12 of the vibration damping unit 4a is compressed and deformed in the up-down direction (Z direction) and stretched and deformed in the left-right direction (X direction) in response to the second vibration displacement. The first vibration damping core unit 12 has such a deformation mode in response to the second vibration displacement.

[0292] like Figure 7As shown, when viewed from the depth direction (Y direction), the first rotating member 15a of the first damping core unit 12 rotates counterclockwise based on the first hinge 20a and the third hinge 20c. The second rotating member 15b rotates clockwise based on the second hinge 20b and the fourth hinge 20d. The third rotating member 15c rotates clockwise based on the third hinge 20c and the ninth hinge 20i. The fourth rotating member 15d rotates counterclockwise based on the fourth hinge 20d and the tenth hinge 20j.

[0293] When the rotation amounts (displacement amounts) of the first rotating member 15a and the second rotating member 15b are compared with the rotation amounts of the third rotating member 15c and the fourth rotating member 15d, the rotation amounts of the third rotating member 15c and the fourth rotating member 15d closer to the vibration reduction driving member 14 are larger.

[0294] The opening 22a extending in the left-right direction (X direction) of the first damping core unit 12 is deformed so as to be reduced in the up-down direction (Z direction). The opening 22b extending in the up-down direction (Z direction) of the first damping core unit 12 is deformed so as to be expanded in the left-right direction (X direction). That is, the opening 22a is deformed so as to be closed, and the opening 22b is deformed so as to be opened.

[0295] like Figure 5 and Figure 7 As shown, when the second vibration displacement occurs due to the vibration in the up-down direction (Z direction), the second vibration damping core unit 13 of the vibration damping unit 4a is stretched and deformed in the up-down direction (Z direction) and compressed and deformed in the left-right direction (X direction) in accordance with the second vibration displacement. The second vibration damping core unit 13 has such a deformation mode in accordance with the second vibration displacement.

[0296] like Figure 7 As shown, when viewed from the depth direction (Y direction), the fifth rotating member 17a of the second vibration damping core unit 13 rotates counterclockwise based on the fifth hinge 20e and the seventh hinge 20g. The sixth rotating member 17b rotates clockwise based on the sixth hinge 20f and the eighth hinge 20h. The seventh rotating member 17c rotates clockwise based on the seventh hinge 20g and the eleventh hinge 20k. The eighth rotating member 17d rotates counterclockwise based on the eighth hinge 20h and the twelfth hinge 20l.

[0297] When the rotation amounts (displacement amounts) of the fifth rotating member 17a and the sixth rotating member 17b are compared with the rotation amounts of the seventh rotating member 17c and the eighth rotating member 17d, the seventh rotating member 17c and the eighth rotating member 17d on the side closer to the vibration reduction driving member 14 have larger rotation amounts.

[0298] The opening 23a extending in the left-right direction (X direction) of the second damping core unit 13 is deformed so as to be enlarged in the up-down direction (Z direction). The opening 23b extending in the up-down direction (Z direction) of the second damping core unit 13 is deformed so as to be reduced in the left-right direction (X direction). That is, the opening 23a is deformed so as to be opened, and the opening 23b is deformed so as to be closed.

[0299] like Figure 5 and Figure 7 As shown, the vibration reduction driving member 14 is displaced toward the upper side in the up-down direction (Z direction) corresponding to the second vibration displacement. That is, when the first supporting member 2 and the second supporting member 3 are displaced toward the lower side, the vibration reduction driving member 14 is displaced toward the upper side to offset the lower side direction.

[0300] As described above, in the vibration damping structure 1 according to the present embodiment, when the first support member 2 and the second support member 3 vibrate in the vertical direction (Z direction), the first vibration damping core unit 12 and the second vibration damping core unit 13 deform to complement each other.

[0301] Specifically, the first and second vibration damping core units 12 and 13 respectively repeat tensile deformation and compressive deformation in the vertical direction (Z direction) in response to the vertical vibration of the first and second supporting members 2 and 3 .

[0302] When the first damping core unit 12 is tensilely deformed in the vertical direction (Z direction), the second damping core unit 13 is compressively deformed in the vertical direction (Z direction). When the first damping core unit 12 is compressively deformed in the vertical direction (Z direction), the second damping core unit 13 is tensilely deformed in the vertical direction (Z direction).

[0303] The first damping core unit 12 is subjected to tensile deformation and compressive deformation by the rotation of the first to fourth rotating members 15a to 15d, and the second damping core unit 13 is subjected to tensile deformation and compressive deformation by the rotation of the fifth to eighth rotating members 17a to 17d.

[0304] Furthermore, the vibration-damping driving member 14 disposed between the first vibration-damping core unit 12 and the second vibration-damping core unit 13 is displaced in a direction that cancels out vibrations of the first supporting member 2 and the second supporting member 3 in the up-down direction (Z direction).

[0305] The complementary deformation of the first and second vibration damping core units 12 and 13, the rotation of the rotating members (rotation of the first to eighth rotating members 15a to 15 and 17a to 17d) and the vibration damping driving member 14 can effectively suppress the vibration acting on the first and second supporting members 2 and 3.

[0306] When vertical vibration (Z direction) is applied to the first support member 2 and the second support member 3, the vibration reduction unit 4 (the first vibration reduction core unit 12, the second vibration reduction core unit 13 and the vibration reduction driving member 14) resonates locally in a specific frequency band. From the energy point of view, the energy of the excitation is used for its resonance; from the force point of view, the core that locally resonates generates force to cancel the displacement of the adjacent core.

[0307] Hereinafter, deformation of the vibration damping unit 4 for damping the vertical vibration (Z direction) may be referred to as vibration damping operation. The vibration damping operation can be regarded as vibration of the vibration damping unit 4 corresponding to the vibration frequency (frequency) of the vertical vibration (Z direction).

[0308] like Figure 4 and Figure 5 As shown in FIG. 1 , the vibration reduction unit 4b located in the center and the vibration reduction unit 4d located at the end portion on the right side are also moved in accordance with the first vibration displacement and the second vibration displacement of the first support member 2 and the second support member 3. Figure 6 and Figure 7 The vibration damping action shown.

[0309] On the other hand, Figure 4 and Figure 5 As shown, the displacement of each part of the first and second damping core units 12 and 13 of the damping unit 4b located in the center is smaller than that of the damping unit 4a at the left end. In addition, the displacement of each part of the damping unit 4c at the right end is further reduced.

[0310] Thus, the vibration in the vertical direction (Z direction) input to the left end of the vibration damping structure 1 is damped from the left side to the right side by the vibration damping action of the three vibration damping units 4a to 4c. Furthermore, the vibration in the vertical direction (Z direction) is sufficiently suppressed in the right end of the vibration damping structure 1, that is, in the portion of the right frame member 25b.

[0311] like Figure 4 and Figure 5 As shown in FIG. 1 , the vibration-damping unit 4a closest to the vibration input point VI is deformed the most in accordance with the displacement of the first supporting member 2 and the second supporting member 3 in the vertical direction (Z direction) caused by the vibration in the vertical direction (Z direction). Furthermore, the farther away from the vibration input point VI in the left-right direction (X direction), the more the vibration in the vertical direction (Z direction) is attenuated. Therefore, the vibration-damping unit 4 disposed at a position away from the vibration input point VI in the left-right direction (X direction) has a smaller deformation amount.

[0312] For example, the vibration input point VI is set at an arbitrary position in the left-right direction (X direction). Figure 3As shown in the figure, the vibration input point VI may be set at the position of one end in the left-right direction (X direction) of the first supporting member 3. The present invention is not limited thereto, and the vibration input point VI may be set at the center of the first supporting member 3 in the left-right direction (X direction).

[0313] The vibration damping operation is performed so that the vibration damping unit 4 closest to the set vibration input point VI is deformed the most. The farther away from the vibration input point VI in the horizontal direction (X direction), the more the vibration in the vertical direction (Z direction) can be damped.

[0314] For example, the vibration input point VI is set at a predetermined position of the first supporting member 2. The vibration output point is set at a position of the first supporting member 2 away from the vibration input point VI. Figure 4 and Figure 5 In the example shown, the position of the right end portion 2b of the first supporting member 2 is set as the vibration output point VO. At the vibration output point VO, the vibration in the up-down direction (Z direction) is sufficiently attenuated.

[0315] In addition, setting the vibration output point VO on the first supporting member 2 is synonymous with setting the vibration output point VO on the second supporting member 3 and setting the vibration output point VO on both the first supporting member 2 and the second supporting member 3. Of course, the set vibration output point VO is at the same position in the up-down direction (Z direction).

[0316] [Adjustment of resonance frequency]

[0317] Figures 4 to 7 In the vibration damping action shown, when the vibration frequency (frequency) of the vibration in the up-down direction (Z direction) acting on the first supporting member 2 and the second supporting member 3 becomes a predetermined value, the deformation of the first damping core unit 12 and the second damping core unit 13 occurs to the maximum, and the vibration damping effect reaches a peak value.

[0318] The vibration frequency (frequency) of the vibration in the vertical direction (Z direction) generated by the maximum deformation amount of the vibration damping action is set as the resonance frequency of the vibration damping unit 4. By adjusting the resonance frequency of the vibration damping unit 4, the vibration in the vertical direction (Z direction) as the vibration damping object (target of vibration damping) can be appropriately changed.

[0319] For example, the resonance frequency of the vibration reduction unit is set based on the frequency of the vibration in the vertical direction (Z direction) to be reduced. This makes it possible to sufficiently suppress the vibration in the vertical direction (Z direction) to be reduced.

[0320] For example, Figure 1The resonance frequency of each of the plurality of vibration reduction units 4 shown in FIG. 1 matches the frequency of the vibration in the vertical direction (Z direction) to be reduced. Thus, the vibration in the vertical direction (Z direction) to be reduced can be sufficiently suppressed.

[0321] Alternatively, the resonance frequencies of the plurality of vibration reduction units 4 may be intentionally and subtly shifted. This can increase the amplitude of vibration in the vertical direction (Z direction) that can be reduced. In other words, the frequency band of vibration in the vertical direction (Z direction) that can be reduced can be expanded.

[0322] In addition, as a method of setting the resonance frequency of the vibration reduction unit 4, any method based on the frequency of the vibration in the up-down direction (Z direction) as the vibration reduction target can be adopted.

[0323] For example, by increasing the inertia moment of the vibration reduction unit 4 , the resonance frequency of the vibration reduction unit 4 can be set lower, and the vibration frequency of the vibration in the up-down direction (Z direction) as the vibration reduction target can be lowered.

[0324] For example, the vibration reduction unit 4 may be configured to reduce vibration in the vertical direction (Z direction) within a frequency range of 20 Hz to 1000 Hz. That is, by applying this technology, a sufficient vibration reduction effect can be exerted on low-frequency vibrations of 100 Hz or less.

[0325] As a method of adjusting the resonance frequency of the vibration reduction unit 4 , various methods can be adopted.

[0326] [Weight (mass) setting]

[0327] By arranging one or more weights on one or more vibration-damping units 4 arranged on the vibration-damping structure 1 , the resonance frequency of the vibration-damping units 4 can be adjusted.

[0328] Since weight is required to function as a weight, it is preferable to use a metal with a relatively heavy specific gravity, for example, a metal material with a relatively heavy specific gravity and easily available, such as iron, tungsten, etc., can be used. It is not limited to these metal materials, and a relatively light metal such as aluminum can also be used depending on the desired resonance frequency. In addition, a weight made of any material can also be used.

[0329] Figure 8 to Figure 10 1 is a schematic diagram showing an example of arrangement of the weight 29 with respect to the vibration reduction unit 4 .

[0330] exist Figure 8 to Figure 10 In the example shown, first to eighth weights 29 a to 29 h are arranged as one or more weights 29 .

[0331] The first to fourth weights 29a to 29d are arranged on the first damping core unit 12. Specifically, they are arranged as follows.

[0332] The first weight 29a is disposed on the first rotating member 15a.

[0333] The second weight 29b is disposed on the second rotating member 15b.

[0334] The third weight 29c is disposed on the third rotating member 15c.

[0335] The fourth weight 29d is disposed on the fourth rotating member 15d.

[0336] The fifth to eighth weights 29e to 29h are arranged on the second damping core unit 13. Specifically, they are arranged as follows.

[0337] The fifth weight 29e is disposed on the fifth rotating member 17a.

[0338] The sixth weight 29f is disposed on the sixth rotating member 17b.

[0339] The seventh weight 29g is disposed on the seventh rotating member 17c.

[0340] The eighth weight 29h is disposed on the eighth rotating member 17d.

[0341] exist Figure 8 to Figure 10 In the example shown, the first to eighth weights 29a to 29h are made of the same material and have the same shape. Specifically, when viewed from the depth direction (Y direction), the first to eighth weights 29a to 29h have a circular shape.

[0342] When the resonance frequency is to be set lower and the attenuation frequency is to be lowered, it is advantageous to increase the total weight of the weights 29 in the vibration reduction unit 4. Figure 8 to Figure 10 It is effective to arrange a plurality of weights 29 as shown.

[0343] exist Figure 8 to Figure 10 In the example shown, the first weight 29a, the second weight 29b, the third weight 29c, and the fourth weight 29d are arranged symmetrically with respect to the center CP1 of the first damping core unit 12. In addition, the fourth weight 29e, the fifth weight 29f, the sixth weight 29g, and the seventh weight 29h may be arranged symmetrically with respect to the center CP2 of the second damping core unit 13.

[0344] exist Figure 8In the example shown, the first to fourth weights 29a to 29d are arranged at positions close to the center CP1 of the first damping core unit 12. That is, the first to fourth weights 29a to 29d are arranged on the second side portions 16b (see FIG. 1 ) of the first to fourth rotating members 15a to 15d, respectively. Figure 3 ) and the third side 16c (refer to Figure 3 ) is located near the vertices between .

[0345] In addition, Figure 8 In the example shown, the fifth to eighth weights 29e to 29h are arranged at positions close to the center CP2 of the second damping core unit 13. That is, the fifth to eighth weights 29e to 29h are arranged at the second side portions 18b (see FIG. 14 ) of the fifth to eighth rotating members 17a to 17d, respectively. Figure 3 ) and the third side 18c (refer to Figure 3 ) is located near the vertices between .

[0346] exist Fig. 9 In the example shown, the first to fourth weights 29a to 29d are arranged on the left and right end sides of the first damping core unit 12. That is, the first to fourth weights 29a to 29d are arranged on the second side portions 16b (see FIG. 16A ) of the first to fourth rotating members 15a to 15d, respectively. Figure 3 ) and the fourth side 16d (refer to Figure 3 ) is located near the vertices between .

[0347] In addition, Fig. 9 In the example shown, the fifth to eighth weights 29e to 29h are arranged on the left and right end sides of the second damping core unit 13. That is, the fifth to eighth weights 29e to 29h are arranged on the second side portions 18b (see FIG. 14 ) of the fifth to eighth rotating members 17a to 17d, respectively. Figure 3 ) and the fourth side 18d (refer to Figure 3 ) is located near the vertices between .

[0348] exist Fig.10 In the example shown, the first to fourth weights 29a to 29d are arranged on the upper and lower end sides of the first damping core unit 12. That is, the first to fourth weights 29a to 29d are arranged on the first side portions 16a (see Figure 3 ) and the third side 16c (refer to Figure 3 ) is located near the vertices between .

[0349] In addition, Fig.10In the example shown, the fifth to eighth weights 29e to 29h are arranged on the upper and lower end sides of the second damping core unit 13. That is, the fifth to eighth weights 29e to 29h are arranged on the first side portions 18a (see FIG. 1 ) of the fifth to eighth rotating members 17a to 17d, respectively. Figure 3 ) and the third side 18c (refer to Figure 3 ) is located near the vertices between .

[0350] Fig.11 It means use Figure 8 to Figure 10 The graph of vibration attenuation with respect to the frequency of vibration in the up-down direction (Z direction) in the case of the vibration reduction unit 4 shown is shown.

[0351] The solid line marked as "center" in the figure is the Figure 8 The curve diagram for the case of the damping unit 4 is shown.

[0352] The solid lines marked "left and right" in the figure are Fig. 9 The graph for the case of a vibration damping unit is shown.

[0353] The solid lines marked as "up and down" in the figure are configured Fig.10 The graph for the case of a vibration damping unit is shown.

[0354] like Fig.11 As shown in FIG. 1 , the frequency at which the maximum attenuation can be achieved can be varied by the arrangement positions of the first to eighth weights 29 a to 29 h. That is, the resonance frequency of the vibration reduction unit 4 can be adjusted.

[0355] Figure 8 The "center-side" structure shown can set the resonance frequency to the lowest. Fig. 9 The structure "towards the left and right" shown can set the resonance frequency higher than the structure "towards the center". Fig.10 The "up and down" structure shown can set the resonance frequency higher.

[0356] Thus, by adjusting the position of the weight 29, the resonance frequency of the vibration reduction unit 4 can be easily adjusted. As described above, the resonance frequency and the moment of inertia can be considered to be correlated. For example, the moment of inertia, i.e., the resonance frequency, can be adjusted by focusing on the distance between each hinge 20 and the weight 29.

[0357] The further the weight 29 is from the hinge 20, which is the reference for the rotation of each rotating member 15 (17), the greater the moment of inertia of the rotating member 15 (17). Therefore, by arranging the weight 29 at a position away from the hinge 20, the resonance frequency of the vibration reduction unit 4 can be lowered. Of course, in the case of increasing the frequency of the vibration after vibration reduction, the weight 29 can also be designed to be close to the hinge 20.

[0358] In addition, if Fig.11 As shown, there is also a frequency where the damping effect decreases for the vibration in the vertical direction (Z direction). From this point of view, it is important to appropriately set the resonance frequency of the vibration damping unit 4 based on the frequency of the vibration in the vertical direction (Z direction) to be damped.

[0359] Figure 12 to Figure 15 1 is a schematic diagram showing another arrangement example of the weights 29 with respect to the vibration reduction unit 4 .

[0360] exist Fig.12 In the example shown, when viewed from the depth direction (Y direction), three circular weights 31 with a relatively small area are arranged as a group on each rotating member 15 (17). The group consisting of the three weights 31 is arranged on the left and right end sides of the first damping core unit 12 and the second damping core unit 13. The group of three weights 31 can also be regarded as the first to eighth weights.

[0361] exist Fig.13 In the example shown, when viewed from the depth direction (Y direction), the weight 29 having an elongated circular shape is arranged on each rotating member 15 (17). In a direction intersecting at an angle of 45 degrees with respect to the vertical direction (Z direction) from the vertex of each rotating member 15 (17) closest to the center CP1 (CP2), the weight 29 is directed toward the fourth side 16d (18d) (see Figure 3 ) draws an imaginary line L. Each weight 29 is arranged so that the major axis of the long side is located on the imaginary line L.

[0362] exist Fig.14 In the example shown, when viewed from the depth direction (Y direction), the weight 29 having a regular hexagonal shape is arranged at the center position of each rotating member 15 ( 17 ).

[0363] exist Fig.15 In the example shown, when viewed from the depth direction (Y direction), the weight 29 having a star shape is arranged at the center position of each rotating member 15 (17).

[0364] The number, weight, shape, and configuration position of the one or more weights 29 configured in the vibration reduction unit 4 are not limited and can be set arbitrarily. For example, the number, weight, shape, and configuration position of the one or more weights 29 can be set based on the frequency of the vibration in the up-down direction (Z direction) as the vibration reduction object. Only one of these parameters can also be set.

[0365] As the shape of the weight 29 when viewed from the depth direction (Y direction), various shapes can be adopted with a high degree of freedom. For example, a circle, rectangle, star, etc. suitable for mass production can be adopted. In addition, a rectangle with a long side, an ellipse with a long axis, an arc-shaped shape, a fan-shaped shape with various angles, etc. can be adopted.

[0366] The weight 29 may be disposed on any one of the first to fourth rotating members 15a to 15d of the first damping core unit 12. The weight 29 may be disposed on any one of the fifth to eighth rotating members 17a to 17d of the second damping core unit 12.

[0367] When viewed from the depth direction (Y direction), a plurality of weights 29 of different shapes or a plurality of weights 29 of different materials may be arranged. In addition, the weights 29 may be arranged at positions that are not symmetrical with respect to the center CP1 (CP2) of the first damping core unit 12 (second damping core unit 13).

[0368] In the depth direction (Y direction), a weight 29 having a size (thickness) larger than that of each rotating part 15 (17) may also be arranged. For example, a through hole may be formed in each rotating part 15 (17), and the weight 29 may be inserted into the through hole. In this case, the two ends of the weight 29 in the depth direction (Y direction) are designed to be larger than the through hole. Thus, a structure in which the weight 29 does not easily detach from the through hole can be achieved. In addition, since the total weight of the weight 29 can be increased, it is easy to reduce the frequency of the vibration to be damped.

[0369] The vibration damping unit 4 is typically designed so that the resonance frequencies of the rotating members 15 ( 17 ) coincide with each other. The vibration damping unit 4 is typically designed so that the resonance frequencies of the first vibration damping core unit 12 and the second vibration damping core unit 13 coincide with each other.

[0370] On the other hand, the present invention is not limited thereto, and the vibration damping unit 4 may be designed so that the resonance frequencies of the rotating members 15 (17) are different from each other. The vibration damping unit 4 may be designed so that the resonance frequencies of the first vibration damping core unit 12 and the second vibration damping core unit 13 are different from each other.

[0371] [Adjustment of the size of each hinge 20 (thin-wall member)]

[0372] The resonance frequency of the vibration reduction unit 4 can be adjusted by adjusting the thickness of the first to twelfth hinges 20 a to 20 l formed of thin-walled members.

[0373] For example, about Figure 3The first hinge 20a, the second hinge 20b, the third hinge 20c, the fourth hinge 20d, the fifth hinge 20e, the sixth hinge 20f, the seventh hinge 20g, the eighth hinge 20h, the ninth hinge 20i, the tenth hinge 20j, the eleventh hinge 20k and the twelfth hinge 20l shown can set the size of the cross section (the cross section when cut by the XY plane) orthogonal to the up and down direction (Z direction) based on the frequency of vibration in the up and down direction (Z direction) of the vibration reduction object.

[0374] Fig.16 It is a graph showing vibration attenuation with respect to the frequency of vibration in the vertical direction (Z direction) when the dimensions of the first to twelfth hinges 20a to 201 in the horizontal direction (X direction) are set to 1.1 mm, 1.3 mm, 1.4 mm, and 1.5 mm.

[0375] like Fig.16 As shown, the smaller the cross-sectional area of ​​the first to twelfth hinges 20a to 201 is, the lower the resonant frequency can be set, and the frequency of the vibration in the vertical direction (Z direction) that can be attenuated can be lowered. In this example, by changing the size in the left-right direction (X direction) from 1.1 mm to 1.5 mm, the frequency of the region where the vibration attenuation is less than -40 dB can be changed from about 44 Hz to about 64 Hz.

[0376] This is considered to be caused by the difference in spring force acting on the first and second vibration damping core units 12 and 13 from the hinges 20 in response to the vibration of the first and second supporting members 2 and 3 in the vertical direction (Z direction).

[0377] By adjusting the cross-sectional area of ​​the hinge 20 in this way, the resonance frequency of the vibration reduction unit 4 can be easily adjusted.

[0378] In addition, the structure of the hinge 20 is not limited, and a hinge using a torsion spring may be used. In this case, the resonance frequency of the vibration reduction unit 4 can be adjusted by adjusting the spring constant of the torsion spring.

[0379] In addition, the resonance frequency of the vibration reduction unit 4 can be adjusted by adjusting the material, shape, size, etc. of the vibration reduction unit 4. The resonance frequency of the vibration reduction unit 4 can also be adjusted by adjusting the material, shape, size, etc. of the reinforcement member constituting the periphery of the vibration reduction unit 4.

[0380] [Deformation of reinforcement components]

[0381] Fig.17 It is a schematic diagram showing another structural example of the reinforcing member 5 .

[0382] exist Fig.17In the example shown, the area around the three vibration-damping units 4a to 4c between the first supporting member 2 and the second supporting member 3 is formed by a plate-like member 33. The plate-like member 33 is used as a reinforcing member 5.

[0383] exist Fig.17 In the example shown, the first supporting member 2 and the second supporting member 3 are integrally formed with the plate-like member 33. Of course, the first supporting member 2 and the second supporting member 3 and the plate-like reinforcing member 5 (33) may be separately manufactured and connected.

[0384] As Fig.17 The manufacturing method of the vibration damping structure 1 shown in the figure prepares a rectangular plate member with the short side direction being the vertical direction (Z direction) and the long side direction being the left-right direction (X direction). The first connection reference positions 9a to 9c are set on the first long side 35a of the plate member, and the second connection reference positions 10a to 10c are set on the second long side 35b.

[0385] In addition, the first long side portion 35 a functions as the first supporting member 2 , and the second long side portion 35 b functions as the second supporting member 3 .

[0386] In the region between the first connection reference position 9 and the second connection reference position 10 which are opposed to each other in the vertical direction (Z direction), an opening portion 36 (36a to 36c) is formed for arranging the vibration reduction unit 4. The vibration reduction unit 4 is arranged inside the opening portion 36, and is connected to the first connection reference position 9 and the second connection reference position 10 via a hinge mechanism (a first hinge 20a, a second hinge 20b, a fifth hinge 20e, and a sixth hinge 20f).

[0387] exist Fig.17 In the vibration damping structure 1 shown, a left opening 37a is formed on the left side of each vibration damping unit 4 as a clearance (gap) between the vibration damping unit 4 and the reinforcing member 5. In addition, a right opening 37b is formed on the right side of each vibration damping unit 4 as a clearance between the vibration damping unit 4 and the reinforcing member 5. The left opening 37a and the right opening 37b are formed symmetrically with respect to the reference line CL.

[0388] For example, the left opening 37a, the right opening 37b, the openings 22a and 22b of the first damping core unit 12, and the openings 23a and 23b of the second damping core unit 13 are cut through a rectangular plate member. Thus, the vibration damping structure 1 can be integrally manufactured from a plate-like member.

[0389] Fig.18 Schematic diagram showing another structural example of the reinforcing member 5. Fig.18 In the figure, the vibration reduction unit 4 is omitted.

[0390] exist Fig.18 In the example shown, the shape of the reinforcement element 5 is calculated by topology optimization.

[0391] The goal is to improve the rigidity by appropriately reinforcing the empty area between adjacent vibration damping units 4 while suppressing the increase in mass of the vibration damping structure 1. In addition, in response to the requirement of maximizing the rigidity with a limited volume of material, the topological structure that can be applied to the vibration damping structure 1 is optimized. In addition, optimization is performed to meet two conditions: the opening portion where the vibration damping unit 4 needs to be arranged, and the optimal solution of the structure of the reinforcement member 5 from the viewpoint of vibration damping performance is a periodic structure.

[0392] By optimizing the topological structure, it is possible to realize a reinforcing member 5 that is advantageous in terms of weight reduction and rigidity. In addition, the optimization algorithm is not limited, and any optimization algorithm may be used.

[0393] In order to appropriately perform vibration attenuation by one or more vibration-damping units 4 in response to the vibration in the vertical direction of the first supporting member 2 and the second supporting member 3, a gap (clearance) is provided between each of the one or more vibration-damping units 4 and the reinforcing member 5. In the present embodiment, a gap of at least 1 mm is provided between each of the one or more vibration-damping units 4 and the reinforcing member 5.

[0394] That is, the size of the gap between each of the one or more vibration damping units 4 and the closest position to the reinforcing member 5 is designed to be at least 1 mm. Figure 1 to Figure 3 In the example shown, the gap between the fourth side portion 16d (18d) of the rotating member 15 (17) and the oblique frame member 27 is designed to be at least 1 mm.

[0395] exist Fig.17 In the example shown, the fourth side 16d (18d) of the rotating member 15 (17) (see Figure 3 ) and the end surface of the plate-shaped component 33 facing it is designed to be at least 1 mm. Thus, one or more vibration reduction units 4 can appropriately perform vibration attenuation operations and appropriately suppress vibration in the up-down direction (Z direction).

[0396] A gap of 2 mm or more is provided between each of the one or more vibration-damping units 4 and the reinforcing member 5. This can further prevent the one or more vibration-damping units 4 from contacting the reinforcing member 5. As a result, the vibration-damping function achieved by the vibration-damping action of the one or more vibration-damping units 4 can be fully exerted.

[0397] As by Figure 1 The reinforcement member 5 composed of the truss structure shown in the figure and the Fig.18The features of the reinforcement member 5 having the optimized topological structure shown above include the following points.

[0398] Right now, Figure 1 and Fig.18 The reinforcement member 5 shown includes a pair of two oblique frame members connected to one of the first supporting member 2 and the second supporting member 3 and extending in an oblique direction with respect to the up-down direction (Z direction) so as to be symmetrical with respect to the reference line RL.

[0399] In by Figure 1 The reinforcement member 5 of the truss structure shown in the figure is constituted by a pair of two oblique frame members 27 extending obliquely downward from the left and right positions of the first connection reference position 9a in a manner symmetrical to each other with respect to the reference line RLa. Similarly, the first connection reference positions 9b and 9c are each constituted by a pair of two oblique frame members 27 extending obliquely downward in a manner symmetrical to each other with respect to the reference lines RLb and RLcc.

[0400] In addition, Figure 1 The reinforcement member 5 shown in the figure is constituted by a pair of two oblique frame members 27 extending obliquely upward from the left and right positions of the second connection reference position 10a in a mutually symmetrical manner with respect to the reference line RLa. Similarly, the second connection reference positions 10b and 10c are each constituted by a pair of two oblique frame members 27 extending obliquely upward in a mutually symmetrical manner with respect to the reference lines RLb and RLc.

[0401] In passing Fig.18 The reinforcement member 5 having the optimized topological structure shown includes a left frame member 25a, a right frame member 25b, and three intermediate frame members 25c to 25e.

[0402] In the area between the left side frame part 25a and the left middle frame part 25c, the area between the left middle frame part 25c and the center middle frame part 25d, the area between the center middle frame part 25d and the right middle frame part 25e, and the area between the right middle frame part 25e and the right side frame part 25b, the reinforcing part 5 is constructed in a manner symmetrical with respect to the reference lines RLa~RLd.

[0403] If we focus on the portion connected to the first supporting member 2 and the third supporting member 3 in the reinforcing member 5 formed by these regions, we can see that there is a pair of two oblique frame members extending obliquely with respect to the up-down direction (Z direction) in a manner symmetrical to each other with respect to the reference line RL.

[0404] For example, focusing on Fig.18The regions 44a and 44b surrounded by 0 in the figure are shown in FIG. The portion in the region 44a and the portion in the region 44b of the reinforcing member 5 are configured in a manner symmetrical to each other with respect to the reference line RLa. Therefore, for the frame members included in the region 44a, there are frame members in the region 44b that are symmetrical to each other with respect to the reference line RLa. The pair of these frame members is equivalent to a pair of two oblique frame members that are connected to one of the first supporting member 2 and the second supporting member 3 and extend in an oblique direction with respect to the up-down direction (Z direction) in a manner symmetrical to each other with respect to the reference line RL.

[0405] There may also be Figure 1 The structure shown in the figure is different from the structure to achieve the truss structure. In addition, the topology optimization calculation can also be carried out with Fig.18 In any case, when there is at least one pair of two oblique frame members connected to one of the first supporting member 2 and the second supporting member 3 and extending in an oblique direction relative to the vertical direction (Z direction) in a manner symmetrical to each other with respect to the reference line RL, it can be said that it is a reinforcing member 5 having one feature related to the present invention. Of course, this feature is only one feature and is not an essential component other than the reinforcing member 5 related to the present invention.

[0406] [Internal reinforcement parts]

[0407] Fig.19 1 is a schematic diagram showing another configuration example of the vibration reduction unit 4 .

[0408] exist Fig.19 In the vibration damping unit 4 shown, an internal reinforcement member 39 is disposed for each of the first vibration damping core unit 12 and the second vibration damping core unit 13. The internal reinforcement member 39 is a member that connects adjacent rotating members 15 (17) to each other.

[0409] exist Fig.19 In the illustrated example, the first damping core unit 12 includes a first inner reinforcing member 39a that connects the first rotating member 15a and the second rotating member 15b, and a second inner reinforcing member 39b that connects the third rotating member 15c and the fourth rotating member 15d.

[0410] In addition, Fig.19 In the illustrated example, the second damping core unit 13 includes a third inner reinforcing member 39c that connects the fifth rotation member 17 and the sixth rotation member 17b, and a fourth inner reinforcing member 39d that connects the seventh rotation member 17c and the eighth rotation member 17d.

[0411] When viewed from the depth direction (Y direction), the first to fourth internal reinforcement members 39a to 39d each have a crank shape.

[0412] The first internal reinforcement member 39a includes a first base portion 40a extending from the position of the lower end portion of the third side portion 16c-1 of the first rotating member 15a along the left-right direction (X direction), a second base portion 40b extending from the position of the upper end portion of the third side portion 16c-2 of the second rotating member 15b along the left-right direction (X direction), and a connecting portion 40c extending along the up-down direction (Z direction) and connecting the first base portion 40a and the second base portion 40b.

[0413] The fourth inner reinforcing member 39d disposed between the seventh rotating member 17c and the eighth rotating member 17d of the second damping core unit 13 has the same structure as the first inner reinforcing member 39a, and includes a first base portion 40a, a second base portion 40b, and a connecting portion 40c.

[0414] The second internal reinforcement member 39b has a third base portion 40d extending along the left-right direction (X direction) from the position of the upper end portion of the third side portion 16c-3 of the third rotating member 15c, a fourth base portion 40e extending along the left-right direction (X direction) from the position of the lower end portion of the third side portion 16c-4 of the fourth rotating member 15d, and a connecting portion 40f extending along the up-down direction (Z direction) and connecting the third base portion 40d and the fourth base portion 40e.

[0415] The third inner reinforcing member 39c disposed between the fifth rotating member 17a and the sixth rotating member 17b of the second damping core unit 13 has the same structure as the second inner reinforcing member 39b, and includes a third base portion 40d, a fourth base portion 40e, and a connecting portion f.

[0416] By disposing the crank-shaped internal reinforcement member 39 in this manner, the rigidity of the vibration damping structure 1 can be improved. In particular, the rigidity of the first vibration damping core unit 12 and the third vibration damping core unit 13 can be improved.

[0417] Fig.19 The structure shown can also be said to be a structure in which the reinforcing members are arranged in the openings 22 b extending in the vertical direction (Z direction) of the first damping core unit 12 and the openings 23 b extending in the vertical direction (Z direction) of the second damping core unit 13 .

[0418] As a result, the rigidity of the vibration-damping structure 1 in the vertical direction (Z direction) is improved. For example, the vibration-damping structure 1 may be used in a situation where a load acts on the lower side in the vertical direction (Z direction). For example, the vibration-damping structure 1 may be used as a beam under a floor or a ceiling, etc., and arranged so as to support a load in the vertical direction (Z direction).

[0419] In this case, the openings 22b and 23b are formed Fig.19 The crank-shaped internal reinforcement member 39 as illustrated can sufficiently suppress the vibration damping structure 1 from being bent or curved due to the load from above. As a result, the function as a beam can be fully exerted.

[0420] The crank-shaped internal reinforcement member 39 is a structure that is useful for improving the rigidity of the vibration reduction unit 4 without affecting the vibration mechanism of the vibration damping operation of the vibration reduction unit 4. Of course, the shape of the internal reinforcement member 39 may be other than the crank shape.

[0421] Of course, internal reinforcement members may be formed in the openings 22a extending in the left-right direction (X direction) of the first damping core unit 12 and the openings 23a extending in the left-right direction (X direction) of the second damping core unit 13. In this way, the rigidity in the left-right direction (X direction) can be improved.

[0422] [R-shaped chamfering (corner rounding)]

[0423] Fig. 20 and Fig.21 It is a schematic diagram showing another structural example of the reinforcing member 5 .

[0424] exist Fig. 20 and Fig.21 In the vibration damping unit 4 shown, an R-shaped chamfer (rounded corner) 46 is formed at the connection portion between the first support member 2 and the second support member 3 and the reinforcing member 5 and in the reinforcing member 5. The R-shaped chamfer 46 is formed by performing an R-shaped chamfering process (rounded corner process).

[0425] exist Fig. 20 In the example shown, the reinforcing member 5 is composed of a truss structure. That is, the reinforcing member 5 has a plurality of frame members including an oblique frame member 27 (oblique support member) extending in an oblique direction relative to the up-down direction (Z direction). Specifically, as the plurality of frame members, a longitudinal frame member 25 (left frame member 25a, middle frame member 25c) extending in the up-down direction (Z direction), a transverse frame member 26 (26a, 26b) extending in the left-right direction (X direction), and an oblique frame member 27 (27a to 27h) are arranged.

[0426] The R-shaped chamfered portion 46 is formed at the connection portion between the first supporting member 2 and the plurality of frame members, the connection portion between the second supporting member 3 and the plurality of frame members, and the connection portion between the frame members included in the plurality of frame members.

[0427] exist Fig. 20 In the example shown, four R-shaped chamfered portions 46a are formed at the connection portions between the first support member 2 and the oblique frame members 27 (27a and 27b). In addition, two R-shaped chamfered portions 46b are formed at the connection portions between the first support member 2 and the longitudinal frame members 25 (the left frame member 25a and the middle frame member 25c).

[0428] Four R-shaped chamfers 46c are formed at the connection between the second support member 3 and the oblique frame member 27 (27g and 27h). In addition, two R-shaped chamfers 46d are formed at the connection between the second support member 3 and the longitudinal frame member 25 (the left frame member 25a and the middle frame member 25c).

[0429] Four R-shaped chamfers 46e are formed at the connection between the left frame member 25a and the oblique frame members 27 (27a, 27c, 27e, 27g). In addition, four R-shaped chamfers 46f are formed at the connection between the middle frame member 25c and the oblique frame members 27 (27b, 27d, 27f, 27h).

[0430] Four R-shaped chamfered portions 46g are formed at the connection portions between the transverse frame member 26 (26a and 26b) and the longitudinal frame member 25 (the left frame member 25a and the middle frame member 25c). In addition, four R-shaped chamfered portions 46h are formed at the connection portions between the transverse frame member 26 (26a and 26b) and the oblique frame members 27 (27c to 27f).

[0431] Four R-shaped chamfered portions 46i are formed at the connecting portions between the oblique frame members 27 (the connecting portion between 27a and 27c, the connecting portion between 27b and 27d, the connecting portion between 27e and 27g, and the connecting portion between 27f and 27h).

[0432] exist Fig.21 In the example shown, the reinforcing member 5 is formed by a plate-shaped member 33 .

[0433] The R-shaped chamfered portion 46 is formed at least at one of the connection portion between the first supporting member 2 and the plate-like member 33 , the connection portion between the second supporting member 3 and the plate-like member 33 , and a corner formed on the end surface (side surface) of the plate-like member 33 .

[0434] exist Fig.21In the example shown, two R-shaped chamfered portions 46j are formed at the connection portion between the first supporting member 2 and the plate-like member 33. In addition, two R-shaped chamfered portions 46k are formed at the connection portion between the second supporting member 3 and the plate-like member 33.

[0435] Four R-shaped chamfered portions 461 are formed at corner portions of opposing surfaces 47 a and 47 b formed on the end surface of the plate-shaped member 33 and facing the vibration damping unit 4 .

[0436] like Fig. 20 and Fig.21 As shown in the example, by forming R-shaped chamfered portions 46 at the connecting portions of the components and at the corners of the end faces of the plate-like components, stress concentration can be suppressed and component damage can be prevented. Therefore, the rigidity of the vibration damping structure 1 can be improved.

[0437] It can constitute Fig. 20 and Fig.21 The entire R-shaped chamfered portion 46 shown may be formed as the chamfered portion 46 at a part of the portion. For example, the R-shaped chamfered portion 46 may be formed at only one location.

[0438] exist Figure 1 , Fig.17 , Fig. 20 and Fig.21 In the above, the area around one or more vibration damping units 4 between the first supporting member 2 and the second supporting member 3, that is, the area to be formed as the reinforcement member 5 is set as the reinforcement target area. Along the up-down direction (Z direction), a greater stress occurs in a portion where the size of the cross section (cross section when cut by the XY plane) of the reinforcement target area orthogonal to the up-down direction (Z direction) changes greatly.

[0439] exist Fig. 20 and Fig.21 In the example shown, the portion at the same position as the center CP1 (CP2) of the first damping core unit 12 (second damping core unit 13) in the vertical direction (Z direction) of the reinforcing member 5 is a portion where the size of the cross section perpendicular to the vertical direction (Z direction) changes greatly, and a large stress is generated. Fig. 20 The R-shaped chamfered portion 46i shown, Fig.21 The R-shaped chamfered portion 461 shown is advantageous in preventing damage due to stress concentration.

[0440] In this embodiment, the radius of the R-shaped chamfered portion 46 is designed to be 2 mm or more. This can sufficiently suppress stress concentration. In addition, it is not limited to this value, and the R-shaped chamfered portion 46 can also be configured in a manner with a radius smaller than 2 mm.

[0441] As described above, in the vibration damping structure 1 according to the present embodiment, one or more vibration damping units 4 are connected between the first support member 2 and the second support member 3 . The one or more vibration damping units 4 each include the first vibration damping core unit 12 and the second vibration damping core unit 13 .

[0442] The first damping core unit 12 is connected to the first support member 2 via the first and second hinges 20a and 20b, and the second damping core unit 13 is connected to the second support member 3 via the fifth and sixth hinges 20e and 20f. The first damping core unit 12 and the second damping core unit 13 are connected to each other via the ninth to twelfth hinges 20i to 20l.

[0443] The first damping core unit 12 includes first to fourth rotating members 15a to 15d. The first rotating member 15a and the third rotating member 15c are connected to each other via a third hinge 20c. The second rotating member 15b and the fourth rotating member 15d are connected to each other via a fourth hinge 20d.

[0444] The second damping core unit 13 includes fifth to eighth rotation members 17a to 17d. The fifth rotation member 17a and the seventh rotation member 17c are connected to each other via a seventh hinge 20g. The sixth rotation member 17b and the eighth rotation member 17d are connected to each other via an eighth hinge 20h.

[0445] As described above, the positions of the first to twelfth hinges 20a to 201 when viewed from the up-down direction (Z direction) are appropriately set.

[0446] If the vibration in the vertical direction (Z direction) acts on the first supporting member 2 and the second supporting member 3, each rotating member 15 (17) rotates with the hinge 20 as the base point. The connection portion between the first damping core unit 12 and the second damping core unit 13 is displaced in a direction that cancels out the vibration in the vertical direction (Z direction) acting on the first supporting member 2 and the second supporting member 3. Thus, the vibration acting on the first supporting member 2 and the second supporting member 3 can be suppressed. As a result, a higher vibration damping function can be exerted.

[0447] Consider the case of using damping mechanisms such as dampers or using damping materials such as sponges as vibration reduction methods to attenuate vibrations. For example, if an additional damping mechanism is added, the mass will increase, and the object to be de-vibrated will often become heavier. In addition, since the damping material is porous or the molecules of the constituent material are not fully bonded to each other but only the molecular chains are entangled, the part using the damping material also has the problem of reduced strength. That is, it can be said that it is a difficult problem to achieve both lightweight and high strength while having the function of attenuating vibrations.

[0448] For example, in the technology described in Patent Document 1, since it is based on a cantilever beam structure, only one side of the beam supports the vibration, not only the motion absorber itself, but also the beam is suspended in a hollow structure, so it does not contribute to the rigidity of the component.

[0449] The technology described in Patent Document 2 has a structure in which the resonant part with a weight is suspended in the hollow of the component, so it does not contribute to the rigidity of the component. In addition, since the resonant part that does not contribute to the rigidity occupies more than half of the volume of the component, the rigidity of the soundproofing member becomes low.

[0450] In the vibration damping structure 1 according to the present technology, the vibration damping unit 4 that performs a vibration suspension operation is arranged between the first support member 2 and the second support member 3. Therefore, it is not a so-called one-handed holding structure, but the vibration damping unit 4 is supported on both sides, so the rigidity of the vibration damping structure 1 becomes high.

[0451] By configuring the reinforcement member 5 to have a truss structure or to optimize the topological structure, it is possible to realize the reinforcement member 5 which is advantageous in reducing the weight and increasing the rigidity of the vibration damping structure 1 .

[0452] In addition, in the present vibration damping structure 1, since the resonance frequency of the vibration damping unit 4 can be easily adjusted, the frequency that can be damped can be easily controlled. For example, the vibration damping structure 1 that can damp low-frequency vibrations of 100 Hz or less can be easily realized.

[0453] [Vibration damping device]

[0454] A vibration damping device including the vibration damping structure 1 according to the present invention will be described. The vibration damping device corresponds to one embodiment of the device incorporating the vibration damping structure according to the present invention.

[0455] Fig. 22 Schematic diagram showing a schematic configuration example of a vibration damping device 50 according to an embodiment of the present invention. Fig. 22 In FIG. 1 , regarding the internal structure of the vibration damping structure 1 , the vibration damping unit 4 (the first vibration damping core unit 12 , the second vibration damping core unit 13 , and the hinge 20 ) is simplified and illustrated.

[0456] The vibration damping device 50 includes one or more vibration damping structures 1, and is connected between a first member 51 and a second member 52. The first member 51 and the second member 52 are connected to the one or more vibration damping structures 1 directly or indirectly via other members.

[0457] One or more vibration-damping structures 1 are connected to the first component 51 in such a way that a predetermined position of the first supporting component 2 is a first vibration action point VA1, and are connected to the second component 52 in such a way that a position of the first supporting component 2 away from the first vibration action point VA1 is a second vibration action point VA2.

[0458] The first vibration action point VA1 is a position where the vibration in the up-down direction (Z direction) is input when the vibration in the up-down direction (Z direction) is generated from the first component 51. That is, when the first component 51 vibrates in the up-down direction (Z direction), it becomes the vibration input point VI (refer to Figure 4 The position of (etc.) is the first vibration action point VA1.

[0459] The first member 51 is connected to the vibration damping structure 1 so that a predetermined position of the first supporting member 2 is a first vibration action point VA1, that is, when vertical vibration (Z direction) occurs from the first member 51, this position is a vibration input point VI.

[0460] The second vibration action point VA2 is a position where the vibration in the vertical direction (Z direction) is input when the vibration in the vertical direction (Z direction) is generated from the second component 52. That is, when the second component 52 vibrates in the vertical direction (Z direction), it becomes the vibration input point VI (refer to Figure 4 The position of (etc.) is the second vibration action point VA2.

[0461] The second component 52 is connected to the vibration damping structure 1 in such a manner that the position of the first supporting component 2 that is separated from the first vibration action point VA1 is the second vibration action point VA2, that is, when vibration in the up and down directions (Z direction) occurs from the second component 52, the position that is separated from the first vibration action point VA1 is the vibration input point VI.

[0462] exist Fig. 22 In the illustrated example, the vibration damping device 50 is further provided with a first connecting mechanism 53 and a second connecting mechanism 54 .

[0463] The first connection mechanism 53 connects the first member 51 to one or more vibration damping structures 1 so that when vibration in the up-down direction (Z direction) occurs from the first member 51 , the vibration generated from the first member 51 is input to the first vibration application point VA1 .

[0464] The second connection mechanism 54 connects the second member 52 to one or more vibration damping structures 1 so that when vibration in the up-down direction (Z direction) occurs from the second member 52 , the vibration generated from the second member 52 is input to the second vibration action point VA2 .

[0465] The specific structures of the first connecting mechanism 53 and the second connecting mechanism 54 are not limited, and any structures may be adopted.

[0466] exist Fig. 22 In the example shown, the vibration damping structure 1 is connected to the first member 51 so that the left end 2a of the first supporting member 2 is the first vibration application point VA1. In addition, the vibration damping structure 1 is connected to the second member 52 so that the right end 2b of the first supporting member 2 is the second vibration application point VA2.

[0467] In addition, setting the first vibration point VA1 and the second vibration point VA2 for the first supporting member 2 is synonymous with setting the first vibration point VA1 and the second vibration point VA2 for the second supporting member 3 and setting the first vibration point VA1 and the second vibration point VA2 for both the first supporting member 2 and the second supporting member 3.

[0468] like Fig. 22 As shown, when the first component 51 is a vibration source and vibrates in the up-down direction (Z direction), the vibration in the up-down direction (Z direction) is input to the first vibration action point VA1. Corresponding to the input vibration acting on the first supporting component 2 and the second supporting component 3, the four vibration reduction units 4 perform vibration attenuation action. As a result, the vibration in the up-down direction (Z direction) is attenuated, and at the second vibration action point VA2, the vibration in the up-down direction (Z direction) is fully suppressed. As a result, it is possible to fully suppress the vibration in the up-down direction (Z direction) occurring in the first component 51 from being transmitted to the second component 52. In addition, in this case, the second vibration action point VA2 can also be regarded as the vibration output point VO (refer to Figure 4 wait).

[0469] When the second component 52 is a vibration source and vibrates in the up-down direction (Z direction), the vibration in the up-down direction (Z direction) is input to the second vibration action point VA2. Corresponding to the input vibration acting on the first supporting component 2 and the second supporting component 3, the four vibration reduction units 4 perform vibration attenuation action. As a result, the vibration in the up-down direction (Z direction) is attenuated, and the vibration in the up-down direction (Z direction) is fully suppressed at the first vibration action point VA1. As a result, it is possible to fully suppress the vibration in the up-down direction (Z direction) occurring in the second component 52 from being transmitted to the first component 51. In addition, in this case, the first vibration action point VA1 can also be regarded as the vibration output point VO (refer to Figure 4 wait).

[0470] By configuring the vibration damping device 50 in this way, it is possible to fully suppress the vibration in the up-down direction (Z direction) from being transmitted between the first component 51 and the second component 52, and to exert a high vibration damping function. As a method of using the vibration damping device 50, for example, a method of configuring the vibration damping device 50 between a component that becomes a vibration source and a component to which the vibration generated by the vibration source is not desired to be transmitted can be cited. Without being limited to this, a method of configuring the vibration damping device 50 between two components that may respectively become vibration sources so that the vibration generated on each of them is not transmitted can also be cited.

[0471] In addition, the vibration damping device 50 is not limited to the case where it is arranged between two components, and the vibration damping device 50 may be arranged for three or more components. In this case, it is sufficient to connect the vibration damping structures 1 in such a manner that the mutually separated positions of the first supporting member 2 are the first vibration action point VA1 and the second vibration action point VA2 for at least two of the three or more components. Such a method of connecting the vibration damping structures 1 for the first component 51 and the second component 52 can also be said to be a method of connecting related to the present technology. Of course, the method of connecting related to the present technology can also be implemented for any two of the three or more components.

[0472] Figure 23 to Figure 25 1 is a schematic diagram showing another configuration example of the vibration damping device 50 .

[0473] Fig.23 It is a perspective view of the vibration damping device 50 when viewed diagonally from the upper right side of the front side.

[0474] Fig.24 This is a diagram showing the vibration damping device 50 as viewed from the depth direction (Y direction).

[0475] Fig.25 It is a side view when the vibration damping device 50 is viewed from the left side (the negative side of the X-axis).

[0476] The vibration damping device 50 includes four vibration damping structures 1 , an upper surface member 55 , a lower surface member 56 , upper side column members 57 ( 57 a to 57 d ), lower side column members 58 ( 58 a to 58 d ), and a support leg member 59 .

[0477] The upper surface member 55 is a plate-shaped member having a rectangular shape when viewed from the up-down direction (Z direction), and is arranged perpendicular to the up-down direction (Z direction).

[0478] The lower surface component 56 is a plate-shaped component having a shape substantially equal to that of the upper surface component 55, and is arranged at a position opposite to the upper surface component 55 along the up-down direction (Z direction). When viewed from the up-down direction (Z direction), the upper surface component 55 and the upper surface component 55 are arranged in a mutually overlapping positional relationship.

[0479] The support leg members 59 are disposed at four corners on the lower side of the lower surface member 56 , and are in contact with the installation surface to support the vibration damping device 50 .

[0480] In this embodiment, the first object is connected to the upper surface member 55. Therefore, the upper surface member 55 functions as a part of the first connection mechanism 53. In other words, the first connection mechanism 53 is composed of the upper surface member 55, the upper side column member 57, and the connection member 60 connected to the upper side column member 57.

[0481] In addition, in the present embodiment, the installation surface that contacts the support leg member 59 is equivalent to the second object. Therefore, the lower surface member 56 and the support leg member 59 function as a part of the second connection mechanism 54. Further, the lower surface member 56, the lower side column member 58, and the connection member 60 connected to the lower side column member 58 constitute the second connection mechanism 54. In addition, other objects different from the installation surface can also be connected to the lower surface member 56 as the second object.

[0482] According to the vibration damping device 50 according to the present embodiment, it is possible to sufficiently suppress the transmission of vibration in the up-down direction (Z direction) between the object placed on the upper surface member 55 and the installation surface.

[0483] The four vibration damping structures 1 are arranged in a positional relationship of overlapping each other in the depth direction (Y direction) and are disposed in the space between the upper surface member 55 and the lower surface member 56 .

[0484] like Fig.24 As shown, when viewed from the depth direction (Y direction), the left frame members 25a of each vibration damping structure 1 are arranged at the left side of the space between the upper surface member 55 and the lower surface member 56 in a mutually overlapping manner. The right frame members 25b of each vibration damping structure 1 are arranged at the right side of the space between the upper surface member 55 and the lower surface member 56 in a mutually overlapping manner.

[0485] Of course, the first support members 2 , the second support members 3 , and the vibration damping units 4 of each vibration damping structure 1 are also arranged to overlap with each other when viewed from the depth direction (Y direction).

[0486] The upper side column member 57 is a plate-shaped member whose longitudinal direction is the vertical direction (Z direction), and the upper end portion is connected to the upper surface member 55. Fig.25 As shown, the lower end of the upper side column member 57 is not connected to the lower surface member 56 , and a gap is formed between the upper side column member 57 and the lower surface member 56 .

[0487] The lower side column member 58 is a plate-shaped member having a shape substantially equal to that of the upper side column member 57, and the lower end portion is connected to the lower surface member 56. Fig.25 As shown, the upper end of the lower side column member 58 is not connected to the upper surface member 55 , and a gap is formed between the lower side column member 58 and the upper surface member 55 .

[0488] like Figure 23 to Figure 25 As shown, the four vibration damping structures 1 are connected to one of the upper side column member 57 and the lower side column member 58 on the left frame member 25a. And, the other of the upper side column member 57 and the lower side column member 58 is connected to the right frame member 25b. That is, the four vibration damping structures 1 are connected in a manner of sandwiching the pair (the upper side column member 57 and the lower side column member 58) from the left and right.

[0489] Furthermore, in the present embodiment, the upper side column member 57 and the lower side column member 58 are connected to the vibration damping structure 1 via the connecting member 60 .

[0490] The four vibration damping structures 1 are sequentially referred to as vibration damping structures 1a to 1d from the front side. In the present embodiment, the upper side column component 57a is connected to the left frame component 25a of the vibration damping structure 1a disposed at the front side (negative side of the Y axis) in the depth direction (Y direction). The lower side column component 58a is connected to the right frame component 25b.

[0491] Therefore, if Fig.24 As shown, the vibration-damping structure 1a is connected to the upper surface member 55 via the upper side column member 57a in such a manner that the position of the left end 2a of the first supporting member 2 is the first vibration action point VA1. In addition, the vibration-damping structure 1a is connected to the lower surface member 56 via the lower side column member 58a in such a manner that the position of the right end 2b of the first supporting member 2 is the second vibration action point VA2.

[0492] A lower side column member 58b is connected to the left side frame member 25a disposed at the second vibration damping structure 1b from the front side in the depth direction (Y direction). An upper side column member 57b is connected to the right side frame member 25b.

[0493] Therefore, the vibration-damping structure 1b is connected to the lower surface member 56 via the lower side column member 58b in such a manner that the position of the left end portion 2a of the first supporting member 2 is the second vibration action point VA2. In addition, the vibration-damping structure 1b is connected to the upper surface member 55 via the upper side column member 57b in such a manner that the position of the right end portion 2b of the first supporting member 2 is the first vibration action point VA1.

[0494] An upper side column member 57c is connected to the left side frame member 25a disposed at the third vibration damping structure 1c from the front side in the depth direction (Y direction), and a lower side column member 58c is connected to the right side frame member 25b.

[0495] Therefore, the vibration-damping structure 1c is connected to the upper surface member 55 via the upper side column member 57c in such a manner that the position of the left end portion 2a of the first supporting member 2 is the first vibration action point VA1. In addition, the vibration-damping structure 1c is connected to the lower surface member 56 via the lower side column member 58c in such a manner that the position of the right end portion 2b of the first supporting member 2 is the second vibration action point VA2.

[0496] The lower side column member 58d is connected to the left side frame member 25a of the vibration damping structure 1d disposed at the innermost side in the depth direction (Y direction), and the upper side column member 57d is connected to the right side frame member 25b.

[0497] Therefore, the vibration-damping structure 1d is connected to the lower surface member 56 via the lower side column member 58d in such a manner that the position of the left end portion 2a of the first supporting member 2 is the second vibration action point VA1. In addition, the vibration-damping structure 1d is connected to the upper surface member 55 via the upper side column member 57d in such a manner that the position of the right end portion 2b of the first supporting member 2 is the first vibration action point VA1.

[0498] Therefore, in the present vibration attenuation device 50, when observed from the depth direction (Y direction), there are alternately arranged along the depth direction (Y direction): a vibration-damping structure 1 (1a and 1c), which is connected to the upper surface component 55 in a manner such that the position of the left end portion 2a of the first supporting component 2 is the first vibration action point VA1, and is connected to the lower surface component 56 in a manner such that the position of the right end portion 2b on the opposite side of the left end portion 2a is the second vibration action point VA2; and a vibration-damping structure 1 (1b and 1d), which is connected to the upper surface component 55 in a manner such that the position of the right end portion 2b of the first supporting component 2 is the first vibration action point VA1, and is connected to the lower surface component 56 in a manner such that the position of the left end portion 2a is the second vibration action point VA2.

[0499] like Fig.25As shown, on the left side surface of the vibration damping device 50, starting from the front side, the upper side column member 57a is first, and the upper side column member 57 and the lower side column member 58 are arranged in an alternating manner. Fig.23 As shown, on the right side surface of the vibration damping device 50, the lower side column members 58 and the upper side column members 57 are arranged alternately starting from the front side with the lower side column member 58a.

[0500] If the vibration in the up-and-down direction (Z direction) generated from the first component acts on the upper surface component 55, the vibration in the up-and-down direction (Z direction) is input to the left frame component 25a of the vibration damping structure 1a closest to the front, the right frame component 25b of the second vibration damping structure 1b, the left frame component 25a of the third vibration damping structure 1c, and the right frame component 25b of the vibration damping structure 1d closest to the inner side via the upper side column component 57a.

[0501] The vibration in the up-down direction (Z direction) is damped by the vibration damping action of the three vibration damping units 4 of each vibration damping structure 1. Therefore, the vibration in the up-down direction (Z direction) is sufficiently suppressed in the right frame member 25b of the vibration damping structure 1a on the most front side, the left frame member 25a of the second vibration damping structure 1b, the right frame member 25b of the third vibration damping structure 1c, and the left frame member 25a of the vibration damping structure 1d on the most inner side.

[0502] Therefore, the vibration in the vertical direction (Z direction) acting on the lower surface member 56 connected to the right frame member 25b of the vibration damping structure 1a on the most front side, the left frame member 25a of the second vibration damping structure 1b, the right frame member 25b of the third vibration damping structure 1c, and the left frame member 25a of the vibration damping structure 1d on the most inner side through the lower side column member 58 is sufficiently suppressed. As a result, the vibration in the vertical direction (Z direction) acting on the installation surface of the four support leg members 59 connected to the lower side of the lower surface member 56 is sufficiently suppressed.

[0503] The vibration damping device 50 can fully suppress the vibration in the up-down direction (Z direction) acting on the upper surface part 55 from being transmitted to the lower surface part 56, thereby exerting a high vibration damping function. As a result, it is possible to fully suppress the vibration in the up-down direction (Z direction) generated from the vibration source connected to the upper surface part 55 from being transmitted to the setting surface abutting against the support leg part 59 on which the lower surface part 56 is set.

[0504] In addition, when the vibration in the up-down direction (Z direction) generated from the setting surface acts on the lower surface component 56 via the support leg component 59, a higher vibration reduction function can be exerted, and the transmission of the vibration in the up-down direction (Z direction) to the object connected to the upper surface component 55 can be fully suppressed.

[0505] Since the upper surface components 55 or the lower surface components 56 are arranged alternately along the depth direction (Y direction), when the vibration is vibrated in the vertical direction (Z direction), the vibration is input from the left side of the vibration damping structure 1 and the vibration is input from the right side of the vibration damping structure 1, so that the vibration can be stably attenuated in a well-balanced manner.

[0506] exist Figure 23 to Figure 25 In the vibration damping device 50 shown, the three vibration damping units 4 included in each of the four vibration damping structures 1 correspond to one embodiment of a plurality of vibration damping units arranged in a row along the left-right direction (X direction) orthogonal to the up-down direction (Z direction).

[0507] The four vibration-damping structures 1 correspond to an embodiment of a plurality of vibration-damping structures arranged in a manner such that they are arranged along a depth direction (Y direction) that is orthogonal to the up-down direction (Z direction) and the left-right direction (X direction), and that the positions of the two end portions (the left end portion 2a and the right end portion 2b) in the left-right direction (X direction) are aligned when viewed from the depth direction (Y direction).

[0508] The vibration-damping structures 1a and 1c are vibration-damping structures connected to the upper surface member 55 in a manner that the position of one end (left end 2a) of the first supporting member 2 in the left-right direction (X direction) is the first vibration action point VA1, and connected to the lower surface member 56 in a manner that the position of the other end (right end 2b) of the first supporting member 2 in the left-right direction (X direction) is the second vibration action point VA2, and are equivalent to an embodiment of the "first vibration-damping structure". In addition, the left end 2a is equivalent to an embodiment of the "end on the first side", and the right end 2b is equivalent to an embodiment of the "second end on the side opposite to the first side".

[0509] The vibration-damping structures 1b and 1d are vibration-damping structures connected to the upper surface member 55 in a manner that the position of one end (right end 2b) of the first supporting member 2 in the left-right direction (X direction) is the first vibration action point VA1, and connected to the lower surface member 56 in a manner that the position of the other end (left end 2a) of the first supporting member 2 in the left-right direction (X direction) is the second vibration action point VA2, and are equivalent to an embodiment of the "second vibration-damping structure". In addition, the left end 2a is equivalent to an embodiment of the "end on the first side", and the right end 2b is equivalent to an embodiment of the "second end on the side opposite to the first side".

[0510] Fig.26 and Fig. 27 1 is a schematic diagram showing another configuration example of the vibration damping device 50 .

[0511] Fig.26 This is a diagram showing the vibration damping device 50 as viewed from the depth direction (Y direction).

[0512] Fig. 27 It is a schematic diagram showing an example of installation of a plurality of vibration damping devices 50 .

[0513] like Fig.26 As shown, the vibration damping device 50 according to the present embodiment includes the vibration damping structure 1 , an upper support member 62 , a connecting member 63 , and a support leg member 64 .

[0514] like Fig. 27 As shown, the vibration damping structure 1 is formed of a block shape having a large size in the depth direction (Y direction). Therefore, when viewed from the top and bottom direction (Z direction), the first support member 2 and the second support member 3 are plate-shaped members formed of a rectangular shape. In addition, on the vibration damping structure 1, eight vibration damping units 4 are arranged between the first support member 2 and the second support member 3 along the left-right direction (X direction).

[0515] like Fig. 27 As shown in the figure, the connecting member 63 is composed of an elongated plate-like member extending in the depth direction (Y direction), and is arranged at the center position in the left-right direction (X direction) of the upper surface side of the first supporting member 2. The upper side supporting member 62 is composed of a plate-like member formed in a rectangular shape when viewed from the top and bottom direction (Z direction), and is connected to the top of the connecting member 63. When viewed from the top and bottom direction (Z direction), the positions of the centers of the first supporting member 2, the connecting member 63, and the upper side supporting member 62 in the left-right direction (X direction) coincide with each other.

[0516] like Fig. 27 As shown, the vibration damping devices 50 are arranged at certain intervals along the left-right direction (X direction) and the depth direction (Y direction). In this embodiment, 6 vibration damping devices 50 are arranged along the left-right direction (X direction), 6 vibration damping devices 50 are arranged along the depth direction (Y direction), and a total of 36 vibration damping devices 50 are arranged. Of course, the number of vibration damping devices 50 arranged is not limited.

[0517] Thirty-six vibration damping devices 50 are arranged inside the double floor structure, and a floor member 66 is arranged on the upper side support member 62. The floor member 66 corresponds to the first member in each vibration damping device 50. Therefore, the connecting member 63 and the upper side support member 62 function as the first connecting mechanism 54.

[0518] The support leg members 64 are arranged at the four corners on the lower side of the second support member 3, and abut against the base member of the double floor structure to support the vibration damping device 50. In this embodiment, the base member abutting against the support leg members 64 is equivalent to the second object. Therefore, the support leg members 64 function as a part of the second connection mechanism 54.

[0519] like Fig.26 As shown, the vibration damping structure 1 is connected to the floor member 66 via the first connection mechanism 53 in such a manner that the center position of the first supporting member 2 in the left-right direction (X direction) is the first vibration action point VA1. In addition, the vibration damping structure 1 is connected to the base member via the second connection mechanism 54 in such a manner that the positions of both ends (the left end 2a and the right end 2b) of the first supporting member 2 in the left-right direction (X direction) are the second vibration action point VA2.

[0520] Alternatively, the vibration damping structure 1 may be connected to the base member so that at least one of the left end portion 2a and the right end portion 2b serves as the second vibration action point VA2.

[0521] If the floor member 66 vibrates in the up-down direction (Z direction), the vibration in the up-down direction (Z direction) is input to the first vibration action point VA1 of the vibration damping structure 1. The vibration damping action performed by the four vibration damping units 4 on the left side of the vibration damping structure 1 sufficiently suppresses the vibration in the up-down direction (Z direction) acting on the position of the second vibration action point VA2 at the left end of the vibration damping structure 1. Furthermore, the vibration damping action performed by the four vibration damping units 4 on the right side of the vibration damping structure 1 sufficiently suppresses the vibration in the up-down direction (Z direction) acting on the position of the second vibration action point VA2 at the right end of the vibration damping structure 1.

[0522] Therefore, the vertical vibration (Z direction) acting on the base member abutting against the four support leg members 64 connected to the left and right end portions of the second support member 3 of the vibration damping structure 1 is sufficiently suppressed.

[0523] By means of the vibration damping device 50, in the double floor structure, it is possible to fully suppress the transmission of the vibration in the vertical direction (Z direction) generated from the floor member 66 on the upper side to the base member on the lower side, and to exert a high vibration damping function. In addition, even when the vibration in the vertical direction (Z direction) generated from the base member on the lower side occurs, it is possible to exert a high vibration damping function, and it is possible to fully suppress the transmission of the vibration in the vertical direction (Z direction) to the floor member 66 on the upper side.

[0524] For example, in residential complexes such as apartments, low-frequency vibrations such as 60 Hz are often problematic regarding vibrations (sounds) generated from upper floors. Application of the vibration damping device 50 is extremely advantageous in suppressing low-frequency vibrations.

[0525] <Other Implementation Methods>

[0526] The present invention is not limited to the above-described embodiment, and other various embodiments can be implemented.

[0527] Figure 28 to Figure 30 It is a schematic diagram showing another structural example of the vibration damping structure 1 .

[0528] exist Figure 28 to Figure 30 , the first support member 2 is shown when viewed from the upper side in the vertical direction (Z direction). In the area FA demarcated by the wavy lines in the figure, the vibration reduction unit 4 is formed toward the back side of the paper. In addition, the second support member 3 is designed in the same shape as the first support member 2.

[0529] exist Fig.28 In the example shown, the first supporting member 2 is composed of six linear members 70 (70a to 70f) extending radially from the center CP3 with the same length when viewed from the up-down direction (Z direction). The six linear members 70 are connected to each other at the center CP3.

[0530] The straight line components 70a and 70d extend from the center CP3 in opposite directions along the depth direction (Y direction). The straight line components 70b and 70e extend from the center CP3 in opposite directions along the directions intersecting at an angle of 60 degrees in a left-handed manner relative to the depth direction (Y direction). The straight line components 70c and 70f extend from the center CP3 in opposite directions along the directions intersecting at an angle of 60 degrees in a right-handed manner relative to the depth direction (Y direction). Therefore, the six straight line components 70 are arranged at equal intervals at an angle of 60 degrees with the center CP3 as the center. This shape can also be called an asterisk shape.

[0531] Three vibration-damping units 4 are arranged along the vertical direction (Z direction) for each linear member 70. Fig.28 In the vibration damping structure 1 shown, a total of 18 vibration damping units 4 are arranged.

[0532] exist Fig.29 In the example shown, the first supporting member 3 is composed of a circular member 71 having a substantially circular shape when viewed from the up-down direction (Z direction). Fig.29 In the vibration damping structure 1 shown, twelve vibration damping units 4 are arranged along the up-down direction (Z direction).

[0533] exist Fig.30In the example shown, the first supporting member 3 has a shape in which, when viewed from the up-down direction (Z direction), linear members 72a extending in a direction intersecting at an angle of 45 degrees with respect to the up-down direction (X direction) and linear members 72b extending in a direction intersecting at an angle of 45 degrees with respect to the up-down direction (X direction) are alternately connected along the left-right direction (X direction). The shape of the first supporting member 2 viewed from the up-down direction (Z direction) can also be referred to as a concave-convex shape composed of a V-shape.

[0534] For each of the linear members 72a and 72b, one vibration reduction unit 4 is arranged along the vertical direction (Z direction). Fig.30 In the vibration damping structure 1 shown, a total of eight vibration damping units 4 are arranged.

[0535] for Figure 28 to Figure 30 The vibration damping structure 1 shown in the figure connects the first member 51 and the second member 52 so that the first vibration action point VA1 and the second vibration action point VA2 are located away from each other. Thus, the transmission of vertical (Z-direction) vibration between the first member 51 and the second member 52 can be sufficiently suppressed.

[0536] For example, in Fig.28 In the structure shown, the first component 51 is connected from the upper side in such a manner that the position of the center CP3 is the first vibration point V1. And, the second object is connected from the lower side in such a manner that the position of the front end of the six straight components is the second vibration point VA2. Such a structure can be adopted. In addition, the six second objects can also be connected in such a manner that the position of the front end of the six straight components is the second vibration point VA2.

[0537] In addition, it may be advantageous to increase the number of vibration reduction units 4 or to increase the size of each vibration reduction unit 4 after adjusting the resonance frequency of the vibration reduction unit 4 based on the frequency of the vibration in the vertical direction (Z direction) to be reduced. In addition, it may be advantageous to increase the length (total length) of the first support member 3 when viewed in the vertical direction (Z direction).

[0538] On the other hand, when the size of the space for arranging the vibration damping structure 1 is limited, the design of the vibration damping structure 1 may be restricted. Figure 28-29 As shown in the example, various shapes can be adopted. Therefore, design constraints can also be flexibly dealt with.

[0539] Furthermore, in the vibration damping structure 1 according to the present technique, various shapes can be adopted, and therefore various arrangement relationships between the first member (or multiple members) and the second member (or multiple members) can be flexibly handled.

[0540] Fig.31 This is an enlarged view showing a portion of the third hinge 20c in an enlarged manner.

[0541] exist Fig.31 In the example shown, the third hinge 20c has an R-shaped chamfered portion 74 at the connection portion with other members. Specifically, the R-shaped chamfered portion 74 is formed at the connection portion between the third hinge 20c and the first rotating member 15a and the connection portion between the third hinge 20c and the third rotating member 15c.

[0542] This can suppress stress concentration in the connection portion between the third hinge 20c and other members (the first rotating member 15a and the third rotating member 15c), thereby preventing damage, etc. Therefore, the rigidity of the vibration damping structure 1 can be improved.

[0543] For example, about Figure 3 The first hinge 20a, the second hinge 20b, the third hinge 20c, the fourth hinge 20d, the fifth hinge 20e, the sixth hinge 20f, the seventh hinge 20g, the eighth hinge 20h, the ninth hinge 20i, the tenth hinge 20j, the eleventh hinge 20k, and the twelfth hinge 20l shown in the drawings may each have an R-shaped chamfered portion 74 at the connection portion with other components. That is, all hinges may have an R-shaped chamfered portion 74 at the connection portion with other components.

[0544] The R-shaped chamfered portion 74 may be formed only on a hinge selected arbitrarily from the first to twelfth hinges 20a to 20l. Of course, the R-shaped chamfered portion 74 may be formed only on one hinge. That is, the R-shaped chamfered portion 74 may be formed on at least one of the first to twelfth hinges 20a to 20l.

[0545] In addition, in each hinge, the R-shaped chamfered portion 74 may be formed on the entire connection portion with other components (for example, both ends in the up-down direction (Z direction), etc.). Not limited to this, the R-shaped chamfered portion 74 may be formed on a portion (only one location, etc.) of the connection portion with other components.

[0546] For example, the R-shaped chamfered portion 74 may be formed on the hinge that connects the rotating member 15 ( 17 ) at both ends.

[0547] Specifically, an R-shaped chamfered portion 74 may be formed on the connecting portion of the 3rd hinge 20c and the 1st rotating part 15a, the connecting portion of the 3rd hinge 20c and the 3rd rotating part 15c, the connecting portion of the 4th hinge 20d and the 2nd rotating part 15b, the connecting portion of the 4th hinge 20d and the 4th rotating part 15d, the connecting portion of the 7th hinge 20g and the 5th rotating part 17a, the connecting portion of the 7th hinge 20g and the 7th rotating part 17c, the connecting portion of the 8th hinge 20h and the 6th rotating part 17b, and the connecting portion of the 8th hinge 20h and the 8th rotating part 17d.

[0548] Of course, the R-shaped chamfered portion 74 is formed for the first hinge 20 a and the second hinge 20 b connected to the first supporting member 2 .

[0549] That is, an R-shaped chamfered portion 74 may be formed on the connecting portion of the first hinge 20a and the first supporting member 2 (connecting member 21a), the connecting portion of the first hinge 20a and the first rotating member 15a, the connecting portion of the second hinge 20b and the first supporting member 2 (connecting member 21a), and the connecting portion of the second hinge 20b and the second rotating member 15b.

[0550] Furthermore, the fifth hinge 20 e and the sixth hinge 20 f connected to the second supporting member 2 may be provided with an R-shaped chamfered portion 74 .

[0551] That is, an R-shaped chamfered portion 74 may be formed on the connecting portion of the 5th hinge 20e and the 2nd supporting member 3 (connecting member 21b), the connecting portion of the 5th hinge 20e and the 5th rotating member 17a, the connecting portion of the 6th hinge 20f and the 2nd supporting member 3 (connecting member 21b), and the connecting portion of the 6th hinge 20f and the 6th rotating member 17b.

[0552] By forming the R-shaped chamfered portion 74 at the connection portion between each hinge and other members, stress concentration can be suppressed and damage of the hinge can be prevented. Therefore, the rigidity of the vibration damping structure 1 can be improved.

[0553] In this embodiment, the radius of the R-shaped chamfered portion 74 is designed to be greater than 1 mm. This can sufficiently suppress stress concentration. In addition, the value is not limited thereto, and the R-shaped chamfered portion 74 may be configured to have a radius smaller than 1 mm.

[0554] In the above, if Figure 3As shown in FIG. 1 and FIG. 2 , a structure in which a vibration reduction driving member 14 is arranged as the vibration reduction unit 4 is described. On the other hand, the vibration reduction driving member 14 may not be arranged, and the 9th hinge 20i and the 11th hinge 20k may be directly connected, and the 10th hinge 20j and the 12th hinge 20l may be directly connected. In this case, the vibration reduction function by the vibration attenuation action can be exerted in response to the vibration of the first supporting member 2 and the second supporting member 3 in the up-down direction (Z direction).

[0555] The structure of the vibration reduction unit 4 can be designed arbitrarily as long as it can perform vibration attenuation in response to the vibration in the vertical direction (Z direction) of the first supporting member 2 and the second supporting member 3. In other words, as long as each rotating member 15 (17) can perform a rotational action and exert a vibration reduction function in response to the vibration in the vertical direction (Z direction) of the first supporting member 2 and the second supporting member 3, the shape of each rotating member 15 (18) can be designed arbitrarily. For example, the shapes of each rotating member 15 (17) can be completely different.

[0556] Furthermore, the position of each hinge 20 when viewed from the up and down direction (Z direction) can also be arbitrarily designed. Figure 3 In the example shown, as a form in which the hinges 20 are arranged at different positions when viewed from the top and bottom direction (Z direction), the structure in which the hinges 20 are arranged at different positions in the left and right direction (X direction) is described. This is not limited to this, and a structure in which the hinges 20 are arranged at different positions in the depth direction (Y direction) may also be adopted. That is, any structure in which the two hinges connected to each rotating member 15 (17) are at different positions when viewed from the top and bottom direction (Z direction) may be adopted.

[0557] exist Figure 2 Even in the structure shown in the figure without the reinforcement member 5, the vibration damping function can be exhibited.

[0558] For example, the upper semicircular portion of the circular frame may function as the first supporting member 2 and the lower semicircular portion may function as the second supporting member 3 .

[0559] Three or more vibration damping core units may be arranged in one vibration damping unit 4. That is, in addition to the first vibration damping core unit 12 and the second vibration damping core unit 13, a third vibration damping core unit, a fourth vibration damping core unit, etc. may be arranged in one vibration damping unit 4. In this case, the first vibration damping core unit 12 may be connected to the first support member 2 via other vibration damping core units, or the second vibration damping core unit 13 may be connected to the second support member 3 via other vibration damping core units.

[0560] exist Figure 22 to Figure 27 In the vibration damping device 50 shown, the vibration damping structure 1 is configured such that the up-down direction corresponding to the "first direction" is along the vertical direction, and the first support member 2 is located above the second support member 3. This is not limiting, and the vibration damping structure 1 may be configured such that the up-down direction corresponding to the "first direction" is along an arbitrary direction.

[0561] For example, the vibration-damping structure 1 may be arranged horizontally in such a manner that the vertical direction is along the horizontal direction. For example, four vibration-damping structures 1 arranged horizontally may be connected to the pillars of the vibration-damping table arranged along the vertical direction from four directions orthogonal to each other along the horizontal direction. In this way, it is possible to suppress the transmission of vibration along the horizontal direction to the vibration-damping table, and to perform fine work or observation using a microscope without deviation and with very high precision.

[0562] The structures such as the vibration mechanism, the first supporting member, the second supporting member, the vibration reduction unit, the first and second vibration reduction core units, the rotating member, the hinge, the reinforcing member, and the vibration attenuation device described with reference to each figure are only one embodiment and can be arbitrarily deformed within the scope of the main purpose of the present technology. That is, any other arbitrary structure for implementing the present technology can be adopted.

[0563] In the present disclosure, in order to facilitate understanding of the description, the words "substantially", "generally", "approximately" and the like are used appropriately. On the other hand, there is no clear distinction between the case where the words "substantially", "generally", "approximately" and the case where they are not used.

[0564] That is, in the present disclosure, concepts such as "center", "central", "uniform", "equal", "same", "orthogonal", "parallel", "symmetrical", "extended", "axial direction", "cylindrical", "cylindrical", "annular", "annular", etc. that specify shapes, sizes, positional relationships, and states include concepts such as "substantially centered", "substantially central", "substantially uniform", "substantially equal", "substantially the same", "substantially orthogonal", "substantially parallel", "substantially symmetrical", "substantially extending", "substantially axial", "substantially cylindrical", "substantially cylindrical", "substantially annular", and "substantially annular".

[0565] For example, it also includes states included in a specified range (for example, a range of ±10%) based on "completely centered", "completely central", "completely uniform", "completely equal", "completely identical", "completely orthogonal", "completely parallel", "completely symmetrical", "completely extended", "completely axial", "completely cylindrical", "completely cylindrical", "completely annular", "completely annular", etc.

[0566] Therefore, even when the words "generally", "substantially", "approximately" and the like are not added, the concept that the words "generally", "substantially", "approximately" and the like can be added may be included. On the contrary, the state to which the words "generally", "substantially", "approximately" and the like are added does not necessarily exclude the complete state.

[0567] In the present disclosure, expressions using the word “ratio” such as “larger than A” and “smaller than A” are expressions that include both concepts that include the same as A and concepts that do not include the same as A. For example, “larger than A” is not limited to not including the same as A, but also includes “greater than A”. In addition, “smaller than A” is not limited to “less than A”, but also includes “less than A”.

[0568] When implementing the present technology, specific settings and the like may be appropriately adopted from the concepts included in “larger than A” and “smaller than A” so as to exert the effects described above.

[0569] In the feature parts of the present technology described above, at least two feature parts can also be combined. That is, the various feature parts described in each embodiment can also be arbitrarily combined without the difference between the various embodiments. In addition, the various effects recorded in the above are only illustrative and not limited, and other effects can also be exerted.

[0570] Description of symbols

[0571] CL1…Center of the first vibration damping core unit

[0572] CL2…Center of the second vibration damping core unit

[0573] RL…Baseline

[0574] VA1…1st vibration point

[0575] VA2…1st vibration point

[0576] VI…Vibration Input Point

[0577] VO...Vibration output point

[0578] 2…1st supporting member

[0579] 3…Second supporting member

[0580] 4…Vibration reduction unit

[0581] 5…Reinforcement components

[0582] 9…1st connection reference position

[0583] 10…Second connection reference position

[0584] 12…1st vibration damping core unit

[0585] 13…Second vibration damping core unit

[0586] 14…Vibration-damping drive components

[0587] 15a to 15d ... first to fourth rotating members

[0588] 17a to 17d ... fifth to eighth rotating members

[0589] 20a~20l…1st to 12th hinges

[0590] 27… Oblique frame member (oblique support member)

[0591] 29…weight (mass)

[0592] 33… Plate-shaped parts

[0593] 39…Internal reinforcement parts

[0594] 46, 74…R-type chamfered part

[0595] 47a, 47b ... Opposing surfaces of plate-like members

[0596] 50…Vibration damping device

[0597] 51…Part 1

[0598] 52…Part 2

[0599] 53…1st connecting mechanism

[0600] 54…Second connection mechanism

Claims

1. A vibration-damping structure, characterized in that: have: A first supporting member; a second supporting member arranged to face the first supporting member along the first direction; and One or more vibration reduction units are connected between the first support member and the second support member to reduce the vibration in the first direction acting on the first support member and the second support member. The one or more vibration damping units each include a first vibration damping core unit and a second vibration damping core unit. The first vibration damping core unit comprises: A first rotating member connected to the first supporting member via a first hinge; A second rotating member connected to the first supporting member via a second hinge; a third rotating member connected to the first rotating member via a third hinge disposed at a position different from the first hinge when viewed from the first direction; as well as The fourth rotating member is connected to the second rotating member via a fourth hinge arranged at a position different from the second hinge when viewed from the first direction. The second vibration damping core unit comprises: a fifth rotating member connected to the second supporting member via a fifth hinge; a sixth rotating member connected to the second supporting member via a sixth hinge; a seventh rotating member connected to the fifth rotating member via a seventh hinge disposed at a position different from the fifth hinge when viewed from the first direction; and The eighth rotating member is connected to the sixth rotating member via an eighth hinge arranged at a position different from the sixth hinge when viewed from the first direction. The first vibration damping core unit and the second vibration damping core unit are connected to each other via the following hinges: a ninth hinge, which is arranged at a position different from that of the third hinge when viewed from the first direction, and is connected to the third rotating member; a tenth hinge, which is arranged at a position different from that of the fourth hinge when viewed from the first direction, and is connected to the fourth rotating member; an eleventh hinge, which is arranged at a position different from that of the seventh hinge when viewed from the first direction, and is connected to the seventh rotating member; and The twelfth hinge is arranged at a position different from that of the eighth hinge when viewed from the first direction, and is connected to the eighth rotating member.

2. The vibration damping structure according to claim 1, wherein: The above-mentioned one or more vibration reduction units respectively include vibration reduction driving components, which are connected to the above-mentioned third rotating component via the above-mentioned ninth hinge, connected to the above-mentioned fourth rotating component via the above-mentioned tenth hinge, connected to the above-mentioned seventh rotating component via the above-mentioned eleventh hinge, and connected to the above-mentioned eighth rotating component via the above-mentioned twelfth hinge.

3. The vibration damping structure according to claim 2, wherein: If the displacement of the first supporting member and the second supporting member in the first direction caused by the vibration in the first direction is defined as the first vibration displacement, and the displacement of the first supporting member and the second supporting member in the second direction opposite to the first direction in the first direction is defined as the second vibration displacement, then The first vibration damping core unit is configured to be tensilely deformed in the first direction in response to the first vibration displacement, and compressively deformed along the first direction in response to the second vibration displacement. The second vibration damping core unit is configured to be compressively deformed in the first direction in response to the first vibration displacement, and to be tensilely deformed along the first direction in response to the second vibration displacement.

4. The vibration-damping structure according to claim 3, wherein: The vibration reduction driving member is configured to be displaced in the second direction in response to the first vibration displacement, and to be displaced in the first direction in response to the second vibration displacement.

5. The vibration-damping structure according to claim 1, wherein: The resonance frequency of each of the one or more vibration reduction units is set based on the frequency of the vibration in the first direction to be reduced.

6. The vibration-damping structure according to claim 5, wherein: The frequency of the vibration in the first direction to be damped is within a range of 20 Hz to 1000 Hz.

7. The vibration-damping structure according to claim 1, wherein: The one or more vibration-damping units are connected between the first supporting member and the second supporting member based on a first connection reference position set on the first supporting member and a second connection reference position set on the second supporting member and which is the same position as the first connection reference position when viewed from the first direction.

8. The vibration damping structure according to claim 7, wherein: The one or more vibration damping units are respectively configured symmetrically with respect to a reference line extending in the first direction and connecting the first connection reference position and the second connection reference position.

9. The vibration-damping structure according to claim 1, wherein: In each of the one or more vibration reduction units, The first rotating member, the second rotating member, the third rotating member, and the fourth rotating member are arranged symmetrically with respect to the center of the first vibration damping core unit; The fifth rotating member, the sixth rotating member, the seventh rotating member, and the eighth rotating member are arranged symmetrically with respect to the center of the second damping core unit.

10. The vibration damping structure according to claim 1, wherein: When viewed from the first direction, the first hinge, the fifth hinge, the ninth hinge, and the eleventh hinge are arranged at the same position. When viewed from the first direction, the second hinge, the sixth hinge, the tenth hinge, and the twelfth hinge are arranged at the same position. When viewed from the first direction, the third hinge and the seventh hinge are arranged at the same position. When viewed from the first direction, the fourth hinge and the eighth hinge are arranged at the same position.

11. The vibration-damping structure according to claim 1, wherein: The first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the sixth hinge, the seventh hinge, the eighth hinge, the ninth hinge, the tenth hinge, the eleventh hinge and the twelfth hinge are respectively composed of thin-walled parts extending in the first direction and having a relatively small size of a cross section orthogonal to the first direction.

12. The vibration damping structure according to claim 11, wherein: The first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the sixth hinge, the seventh hinge, the eighth hinge, the ninth hinge, the tenth hinge, the eleventh hinge and the twelfth hinge respectively set the size of the cross section orthogonal to the first direction based on the frequency of vibration in the first direction as the vibration reduction object.

13. The vibration damping structure according to claim 11, wherein: At least one of the first hinge, the second hinge, the third hinge, the fourth hinge, the fifth hinge, the sixth hinge, the seventh hinge, the eighth hinge, the ninth hinge, the tenth hinge, the eleventh hinge and the twelfth hinge has an R-shaped chamfered portion at the connection portion with other components.

14. The vibration damping structure according to claim 13, wherein: The radius of the R-shaped chamfered portion is 1 mm or more.

15. The vibration damping structure according to claim 1, wherein: One or more weights are disposed on each of the one or more vibration-damping units.

16. The vibration damping structure according to claim 15, wherein: The above one or more weights include: a first weight disposed on the first rotating member of the first damping core unit, a second weight disposed on the second rotating member, a third weight disposed on the third rotating member, and a fourth weight disposed on the fourth rotating member; and a fifth weight disposed on the fifth rotating member of the second damping core unit, a sixth weight disposed on the sixth rotating member, a seventh weight disposed on the seventh rotating member, and an eighth weight disposed on the eighth rotating member.

17. The vibration-damping structure according to claim 16, wherein: The first weight, the second weight, the third weight, and the fourth weight are arranged symmetrically with respect to the center of the first vibration-damping core unit. The fourth weight, the fifth weight, the sixth weight, and the seventh weight are arranged symmetrically with respect to the center of the second vibration-damping core unit.

18. The vibration damping structure according to claim 15, wherein: With respect to the one or more weights, at least one of the number, weight, shape, and arrangement position is set based on the frequency of the vibration in the first direction to be damped.

19. The vibration-damping structure according to claim 1, wherein: There is further provided a reinforcing member connected between the first supporting member and the second supporting member so as to surround the one or more vibration damping units, thereby reinforcing the rigidity of the vibration damping structure.

20. The vibration damping structure according to claim 19, wherein: A gap of at least 1 mm is provided between each of the one or more vibration damping units and the reinforcing member.

21. The vibration damping structure according to claim 19, wherein: The reinforcing member includes a pair of two oblique frame members connected to one of the first supporting member and the second supporting member and extending in an oblique direction with respect to the first direction in a manner symmetrical to each other with respect to the reference line.

22. The vibration damping structure according to claim 19, wherein: The reinforcement member is composed of a truss structure.

23. The vibration damping structure according to claim 19, wherein: The above-mentioned reinforcement components are formed by optimizing the topological structure.

24. The vibration damping structure according to claim 19, wherein: The reinforcing member is formed of a plate-shaped member disposed in a region around the one or more vibration damping units between the first supporting member and the second supporting member.

25. The vibration damping structure according to claim 22, wherein: The reinforcing member comprises a plurality of frame members including oblique support members extending in an oblique direction relative to the first direction, and an R-shaped chamfer is formed on at least one of the connection portions between the first supporting member and the plurality of frame members, the connection portions between the second supporting member and the plurality of frame members, and the connection portions between the frame members included in the plurality of frame members.

26. The vibration damping structure according to claim 25, wherein: The reinforcement member forms the R-shaped chamfered portion at a connection portion between the oblique support members.

27. The vibration damping structure according to claim 24, wherein: The reinforcing member has an R-shaped chamfered portion at at least one of a connection portion between the first supporting member and the plate-like member, a connection portion between the second supporting member and the plate-like member, and a corner portion formed on an end surface of the plate-like member.

28. The vibration damping structure according to claim 27, wherein: The reinforcing member may have the R-shaped chamfered portion at a corner portion formed on a surface facing each of the one or more vibration damping units.

29. The vibration damping structure according to claim 25, wherein: The radius of the R-shaped chamfered portion is 2 mm or more.

30. The vibration-damping structure according to claim 1, wherein: The first damping core unit includes at least one of a first internal reinforcement member connecting the first rotating member and the second rotating member to each other and a second internal reinforcement member connecting the third rotating member and the fourth rotating member to each other. The second damping core unit includes at least one of a third internal reinforcing member connecting the fifth rotation member and the sixth rotation member to each other and a fourth internal reinforcing member connecting the seventh rotation member and the eighth rotation member to each other.

31. The vibration-damping structure according to claim 1, wherein: A vibration input point is set at a predetermined position of the first supporting member.

32. The vibration-damping structure according to claim 31, wherein: A vibration output point is set at a position of the first supporting member that is away from the vibration input point.

33. The vibration-damping structure according to claim 1, wherein: The one or more vibration damping units are a plurality of vibration damping units arranged side by side along a second direction orthogonal to the first direction.

34. The vibration damping structure according to claim 32, wherein: The vibration input point is set at a position of one end portion of the first supporting member in the second direction.

35. The vibration damping structure according to claim 32, wherein: The vibration input point is set at a center position of the first supporting member in the second direction.

36. The vibration-damping structure according to claim 1, wherein: The first direction is along the vertical direction, and the first supporting member is configured so as to be located above the second supporting member.

37. The vibration-damping structure according to claim 1, wherein: Constructed as a metamaterial structure.

38. A device incorporating a vibration-damping structure, comprising one or more vibration-damping structures connected between a first component and a second component, characterized in that: The above-mentioned one or more vibration-damping structures are respectively the vibration-damping structures described in claim 1, which are connected to the above-mentioned first component in a manner that a specified position of the above-mentioned first supporting component is a first vibration action point, and are connected to the above-mentioned second component in a manner that a position of the above-mentioned first supporting component away from the above-mentioned first vibration action point is a second vibration action point.

39. A device incorporating a vibration-damping structure, the device incorporating the vibration-damping structure according to claim 36, characterized in that: Also available: a first connection mechanism for connecting the first component to the one or more vibration-damping structures, respectively, so that when vibration in the first direction occurs from the first component, the vibration generated from the first component is input to the first vibration application point; and The second connection mechanism connects the second component to the one or more vibration-damping structures, respectively, so that when vibration in the first direction occurs from the second component, the vibration generated from the second component is input to the second vibration application point.

40. A device incorporating a vibration-damping structure, the device incorporating the vibration-damping structure according to claim 36, characterized in that: The one or more vibration-damping structures are respectively As the one or more vibration reduction units, there are a plurality of vibration reduction units arranged along a second direction orthogonal to the first direction; The first support member is connected to the first member in such a manner that the position of one end portion of the first support member in the second direction becomes the first vibration action point; The first supporting member is connected to the second member so that the position of the other end portion in the second direction becomes the second vibration action point.

41. A device incorporating a vibration-damping structure, the device incorporating the vibration-damping structure according to claim 38, characterized in that: The one or more vibration damping structures are arranged in a third direction orthogonal to the first direction and the second direction, and are arranged such that the positions of the two ends in the second direction coincide with each other when viewed from the third direction; The plurality of vibration damping structures are alternately arranged along the third direction, with a first vibration damping structure and a second vibration damping structure being arranged alternately along the third direction when viewed from the third direction, the first vibration damping structure being connected to the first component in a manner that the position of the end portion on the first side is the first vibration application point, and being connected to the second component in a manner that the position of the end portion on the second side opposite to the first side is the second vibration application point, and the second vibration damping structure being connected to the first component in a manner that the position of the end portion on the second side is the first vibration application point, and being connected to the second component in a manner that the position of the end portion on the first side is the second vibration application point.

42. A device incorporating a vibration-damping structure, the device incorporating the vibration-damping structure according to claim 36, characterized in that: The one or more vibration-damping structures are respectively As the one or more vibration reduction units, there are a plurality of vibration reduction units arranged along a second direction orthogonal to the first direction; connected to the first member in such a manner that the center position of the first supporting member in the second direction serves as the first vibration action point; The first member is connected to the second supporting member so that the position of at least one end portion in the second direction of the first member becomes the second vibration action point.

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