TWI781349B - Anti-vibration device - Google Patents

Abstract

To provide an anti-vibration material with excellent buckling performance and durability without compromising the required anti-vibration performance. shock device.

A laminated structure (10) in which a hard material (11) and a soft material (12) are arranged is provided. The structure (10) is partitioned by an end region (R1), a central region (R2) and a middle region (R3). The hard materials of each end region ( R1 ), central region ( R2 ) and middle region ( R3 ) are end hard material ( 111 ), central hard material ( 112 ) and middle hard material ( 113 ). Axial positional relationship of the width direction outer edge (111e) of the terminal material (111), the width direction outer edge (113e) of the intermediate material (113) and the width direction outer edge (112e) of the central material (112) width direction outer edge (111e)>width direction outer edge (113e)>width direction outer edge (112e), further, the width W2 between the width direction outer edges of the central material (112) is to the width W2 between the width direction outer edges of the end material (111) The width W1 ratio (W2/W1) is 0.6≦(W2/W1)≦0.97 or less.

Description

Anti-vibration device

The invention relates to a shockproof device.

The conventional anti-vibration device has a laminated structure which is formed by alternately arranging hard materials and soft materials in the up-down direction. The outer edge of the material in the width direction extends further outside in the width direction than the central hard material arranged in the central region of the laminated structure (for example, refer to Patent Document 1). According to the anti-vibration device of Patent Document 1, even when the laminated structure is elastically deformed in the horizontal direction, the hard material at the end supports the central hard material, thereby suppressing the buckling of the laminated structure from causing damage in the laminated structure. The local stress concentration generated in the compression side part (the end region).

[Prior Art Literature]

[Patent Document]

Patent Document 1: Japanese Patent Laid-Open No. 2014-47926

On the other hand, the anti-vibration device can improve the anti-vibration performance to protect the structure by prolonging the characteristic vibration period.

According to the anti-vibration device of Patent Document 1, the greater the width of the hard material at the end, the greater the buckling improvement effect. However, when the width of the hard material at the end is too large, the outer edge of the hard material at the end is easier to deform than the soft material due to stress concentration when the laminated structure is elastically deformed. Stripped, there is room for improvement on the durability side. further Furthermore, although the buckling improvement effect greatly depends on the width of the hard material at the upper and lower ends, in the anti-vibration device described in Patent Document 1, there is a possibility that the unique vibration period of the structure will be shortened.

An object of the present invention is to provide an anti-vibration device that does not impair the required anti-vibration performance and is excellent in buckling resistance and durability.

The anti-vibration device related to the present invention is an anti-vibration device equipped with a layered structure formed by alternately arranging hard materials and soft materials in the up and down direction; the layered structure system is divided into two end areas located on the upper side and the lower side respectively ; a central region between the two end regions; and two intermediate regions adjacent to the central region and the end region between the central region and the end region; the hard material disposed in the end region is at least 1 end hard material; the hard material arranged in the central area is at least 1 central hard material; the hard material arranged in the middle area is at least 1 intermediate hard material; the outer edge of the end hard material in the width direction will be located at The outer edge of the central hard material in the width direction is closer to the outer side in the width direction, and the outer edge of the middle hard material in the width direction is located on the outer side in the width direction than the outer edge of the central hard material in the width direction. The outer edge in the width direction of the hard material should be close to the inner side in the width direction; further, the ratio of the width W2 between the outer edges in the width direction of the central hard material to the width W1 between the outer edges in the width direction of the hard material at the end (W2/W1) The system is 0.6≦(W2/W1)≦0.97. According to the anti-vibration device of the present invention, it can be a shock-proof device that does not impair the required anti-vibration performance and is excellent in buckling resistance and durability.

The anti-vibration device related to the present invention is configured with a plurality of the intermediate hard materials in the middle area; the width of the plurality of intermediate hard materials preferably decreases from the side of the end area toward the side of the central area. In this case, the local stress concentration generated in the terminal region can be further suppressed, and the durability can be further improved.

The anti-vibration device related to the present invention is configured with a plurality of the central hard materials in the central area; the widths of the plurality of central hard materials are preferably the same. In this case, even if the central hard material is plural, the required anti-vibration performance can be exhibited more reliably.

The anti-vibration device related to the present invention is configured with a plurality of end hard materials in the end area; the widths of the plurality of end hard materials are preferably the same. In this case, the local stress concentration generated in the terminal region can be further suppressed, and the buckling resistance and durability can be further improved.

The anti-vibration device related to the present invention is configured with a plurality of end hard materials in the end area; the width of the plurality of end hard materials can become larger from the central area side to the end area side.

In the anti-vibration device related to the present invention, under the observation of the vertical section of the anti-vibration device, the widths of the end hard material adjacent to the middle hard material, the middle hard material, and the central hard material adjacent to the middle hard material The angle A of the acute angle side formed by the virtual ridge line formed by connecting the outer edges of the direction with respect to the up and down direction can be 45°~80°. In this case, it may be difficult to generate buckling.

In the anti-vibration device related to the present invention, the imaginary ridge line may be straight when observed in the vertical section of the anti-vibration device. In this case, it becomes more difficult to generate buckling.

In the anti-vibration device of the present invention, the ratio (H3/H0) of the vertical height H3 of the intermediate region to the vertical height H0 of the laminated structure may be 0.01˜0.1. In this case, the outer edge in the width direction of the hard material at the end is less likely to be peeled off from the soft material due to stress concentration, thereby improving durability.

In the anti-vibration device of the present invention, the outer surface shape of the laminated structure can be combined with a linear shape when viewed in cross-section in the vertical direction of the anti-vibration device. In this case, since the proportion of the soft material can be reduced compared with the curved shape on the outside, the shockproof performance can be improved.

According to the present invention, it is possible to provide an anti-vibration device having excellent buckling resistance and durability without impairing required anti-vibration performance.

1A: Anti-vibration device (first embodiment)

1B: Anti-vibration device (second embodiment)

10: Layered Constructs

11: Hard material

111: end hard material

112: central hard material

113: intermediate hard material

111e: The outer edge of the width direction of the hard material at the end

112e: The outer edge of the central hard material in the width direction

113e: The outer edge of the width direction of the middle hard material

12: Soft material

A: Angle

H0: the height of the laminated structure in the upper and lower directions

H3: The height of the upper and lower directions of the middle area

L: virtual ridge

△L1: The difference between the outer edge of the width direction of the end hard material and the outer edge of the width direction of the middle hard material

△L2: The difference between the outer edge of the width direction of the middle hard material and the outer edge of the width direction of the central hard material

R1: terminal region

R2: central area

R3: middle area

W1: The width between the outer edges in the width direction of the hard material at the end

W2: The width between the outer edges of the central hard material in the width direction

Fig. 1 is a cross-sectional view schematically showing a vibration-proof device according to a first embodiment of the present invention, including a cross-section in the vertical direction.

Fig. 2 is a cross-sectional view schematically showing a vibration-proof device according to a second embodiment of the present invention, including a cross-section in the vertical direction.

Hereinafter, the anti-vibration devices related to the various embodiments of the present invention will be described with reference to the drawings. In the following description, the same symbols are used for substantially the same items, and their descriptions are omitted.

In Fig. 1, reference numeral 1A is an anti-vibration device related to the first embodiment of the present invention. The antivibration device 1A includes a laminated structure 10 . The laminated structure 10 is formed by alternately arranging hard materials 11 and soft materials 12 in the vertical direction (vertical direction). The anti-vibration device 1A has a central axis O extending in the vertical direction, and the central axis O can be erected along a vertical axis.

The lower end of the laminated structure 10 is fixed with a lower plate 20 . The lower plate body 20 can be fixed to the base part (not shown) supporting buildings, bridges, houses and other structures (not shown). The upper end of the laminated structure 10 is fixed with an upper plate 30 . The upper plate body 30 can be fixed to, for example, the above-mentioned structure. In this embodiment, the lower plate body 20 and the upper plate body 30 are formed of circular steel plates.

The hard material 11 is a rigid layer. In the present embodiment, the hard material 11 is a circular metal plate, specifically, a circular steel plate. In this embodiment, the soft material 12 is a circular elastic plate, specifically, a circular rubber plate. In this embodiment, the hard material 11 and the soft material 12 have the same thickness. However, the thicknesses of the hard material 11 and the soft material 12 can be changed appropriately. Further, in this embodiment, the outer edge 11e in the width direction of the hard material 11 is covered with the outer layer 13 together with the soft material 12 . The outer layer 13 is a cylindrical rubber plate. However, the outer layer 13 may be omitted.

As shown in the dotted line area of FIG. 1 , the laminated structure 10 is divided into: two terminal regions R1 located on the upper side and the lower side respectively; a central region R2 located between the two terminal regions R1; and Two intermediate regions R3 adjacent to the central region R2 and the end region R1 are located between the central region R2 and the end region R1. Here, the end region R1 is at least any one of a so-called virtual region continuous downward from the upper end of the laminated structure 10 or a virtual region continuous upward from the lower end of the laminated structure 10 . In addition, the central region R2 is a so-called virtual region located in the center of the laminated structure 10 in the vertical direction. Further, the middle region R3 is a so-called virtual region continuous from the lower end of the upper end region R1 to the downward direction, or at least any one of the virtual regions continuous to the upper direction from the upper end of the lower end region R1. An imaginary area including the central area R2.

For example, the end region R1, the central region R2, and the middle region R3 are respectively based on the vertical height H1 of one side of the end region R1 and the vertical height H1' of the other side, the vertical height H2 of one side of the central region R2, and the vertical height H2 of one side of the middle region R3. The vertical height H3 of one side and the vertical height H3' of the other side are set. In this case, the vertical height H0 of the laminated structure 10 is set as H0=H1+H1'+H2+H3+H3'. Specific examples include H/H0=0.01-0.24, H1'/H0=0.01-0.24, H2/H0=0.5-0.96, H3/H0=0.01-0.24, and H3'/H0=0.01-0.24.

Furthermore, in the laminated structure 10 , the hard material arranged in the end region R1 is at least one end hard material 111 . In addition, in the laminated structure 10 , the hard material disposed in the central region R2 is at least one central hard material 112 . Furthermore, in the laminated structure 10 , the hard material arranged in the middle region R3 is at least one middle hard material 113 . The antivibration device 1A related to this embodiment has one terminal hard material as the terminal hard material 111 . In addition, the antivibration device 1A has a plurality of (ten in this embodiment) central hard materials as the central hard material 112 . In this embodiment, the central hard material 112 is the same central hard material. Furthermore, the shockproof device 1A has one intermediate hard material as the intermediate hard material 113 .

In addition, in the laminated structure 10, the positional relationship in the width direction of the widthwise outer edge 111e of the terminal hard material 111, the widthwise outer edge 113e of the intermediate hard material 113, and the widthwise outer edge 112e of the central hard material 112 satisfies the following relationship Formula 1).

The outer edge 111e in the width direction of the end hard material 111>the outer edge 113e in the width direction of the middle hard material 113>the outer edge 112e in the width direction of the central hard material 112...Formula (1)

In detail, the end hard material 111 has a widthwise outer edge 111e that is located on the widthwise outer side of the central hard material 112 than the widthwise outer edge 112e of the central hard material 112 in any case. For example, in the case where the end hard materials 111 are plural, the width direction outer edge 111e of the end hard material 111 located on the innermost width direction outer edge 111e of the width direction outer edge 111e is located in the width direction of the central hard material 112 The outer edge 112e is located on the outside in the width direction. Further, when the central hard material 112 is plural, the widthwise outer edge 111e of the end hard material 111 located on the innermost widthwise outer edge 111e of the widthwise outer edge 111e is located at the center hard material 111e of any one. The outer edge 112e in the width direction of the material 112 is located on the outside in the width direction. Also, the middle hard material 113 has a width that will be positioned outside the width direction outer edge 112e of the central hard material 112 in the width direction and wider than the end hard material 111 in any case. The outer edge 111e in the width direction is adjacent to the outer edge 113e in the width direction on the inner side in the width direction. For example, when the middle hard material 113 is plural, the width direction outer edge 113e of the middle hard material 113 located on the innermost width direction outer edge 113e of the width direction outer edge 113e is located in the width direction of the central hard material 112 The outer edge 112e is located on the outside in the width direction. Further, in the case where the central hard material 112 is plural, the width direction outer edge 113e of the middle hard material 113 located on the innermost width direction inner side of the width direction outer edge 113e is positioned at the central hard material 113e of the other one. The outer edge 112e in the width direction of the material 112 is located on the outside in the width direction. Also, when the middle hard material 113 is plural, the width direction outer edge 113e of the middle hard material 113 located on the outermost width direction outer edge 113e of the width direction outer edge 113e is located in the width direction of the end hard material 111 The outer edge 111e is located on the inner side in the width direction. Further, in the case where the end hard materials 111 are plural, the width direction outer edge 113e of the middle hard material 113 located on the outermost width direction outer edge 113e of the width direction outer edge 113e is located at the end hard material 113e of any one. The outer edge 111e in the width direction of the material 111 is located on the inner side in the width direction.

Further, the width between the widthwise outer edges 111e of the end hard material 111 is W1 (hereinafter also referred to as "the width W1 of the end hard material 111"), and the width of the widthwise outer edge 112e of the central hard material 112 is When the width between them is W2 (hereinafter also referred to as "the width W2 of the central hard material 112."), the ratio α (=W2/W1) of the width W2 of the central hard material 112 to the width W1 of the end hard material 111 will satisfy the following Relational formula (2).

0.6≦(W2/W1)≦0.97...Formula (2)

In this embodiment, the hard material 11 is a circular plate. Moreover, in this embodiment, the end hard material 111, the intermediate hard material 113, and the center hard material 112 are coaxially arrange|positioned on the central axis O. As shown in FIG. In this embodiment, the width W1 of the end hard material 111, the width W2 of the central hard material 112, and the width W3 between the widthwise outer edges 113e of the middle hard material 113 (hereinafter also referred to as "middle hard material") Width W3 of material 113". ) is the diameter of the hard material 11. That is, in the present embodiment, the ratio α of the width W2 of the central hard material 112 to the width W1 of the end hard material 111 can be replaced by the ratio of the diameter φ2 of the central hard material 112 to the diameter φ1 of the end hard material 111 (φ2/ φ1).

In addition, the hard material 11 is not limited to a circular plate, and a special-shaped plate such as a polygon may be used. In this case, the width W1 of the end hard material 111 , the width W2 of the central hard material 112 , and the width W3 of the middle hard material 113 can be the diameter of the circumscribed circle of the hard material 11 . Also, α(=W2/W1) is preferably 0.6 or more. More preferably, it is a value of α=0.7~0.92. In this case, shockproof performance can be sufficiently ensured. In the case of plural hard materials, W1 is the maximum width of the end hard material 111 , and W2 is the minimum width of the central hard material 112 .

In addition, specific examples of the width W1 of the end hard material 111, the width W2 of the central hard material 112, and the width W of the middle hard material 113 are W2/W1=0.6~0.97, W3/W1=0.61~0.96.

According to the anti-vibration device related to this embodiment, since the end hard material 111 has the width direction outer edge 111e located on the width direction outer side than the width direction outer edge 112e of the central hard material 112, even if the laminated structure 10 is moved rapidly Elastic deformation occurs because the end hard material 111 supports the central hard material 112, thereby suppressing localized stress concentration at the compressed side portion (end region R1) caused by buckling of the laminated structure 10.

On the other hand, the inventors of the present invention confirmed that the buckling characteristics can be improved by simply ensuring the width W1 of the hard end material 111 large. However, simply increasing W1 shortens the vibration period unique to a structure such as a building, so there is a problem that the original seismic performance cannot be exhibited. Then, as a result of the present inventor's hard work and research, he found that if the width W1 of the end hard material 111 is ensured to a large extent, if the width W2 of the central hard material 112 is reduced, the above-mentioned A phenomenon in which the unique vibration cycle of structures becomes shorter. Specifically, when the ratio α of the width W2 of the central hard material 112 to the width W1 of the end hard material 111 is 0.97 or less, it has been confirmed that the characteristic vibration cycle of the above-mentioned structure can be maintained for a long time, and the buckling characteristics can be improved. Therefore, according to the anti-vibration device 1A related to this embodiment, since the ratio α of the width W2 of the central hard material 112 to the width W1 of the end hard material 111 is 0.97 or less, the buckling performance can be improved without impairing the required anti-vibration performance. In addition, when the ratio α of the width W2 of the central hard material 112 to the width W1 of the end hard material 111 is less than 0.6, the width of the central hard material 112 becomes small, thereby reducing the buckling performance and load supporting capacity. On the other hand, if the ratio α of the width W2 of the central hard material 112 to the width W1 of the end hard material 111 is 0.6 or more, the effect of improving the buckling performance can be obtained without reducing the load supporting capacity.

In addition, according to the antivibration device 1A related to the present embodiment, since the central hard material 113 is arranged between the central region R2 and the end region R1 and adjacent to the two intermediate regions R3 located between the central region R2 and the end region R1, And the central hard material 113 has a widthwise outer edge 113e located on the widthwise outer side than the widthwise outer edge 112e of the central hard material 112 and closer to the widthwise inner side than the widthwise outer edge 111e of the end hard material 111, Therefore, when the laminated structure 10 undergoes large elastic deformation, localized peeling will not occur on the compressed side of the outer edge 111e in the width direction of the end hard material 111 adjacent to the middle hard material 113 .

That is, compared with the case of the anti-vibration device having the same horizontal rigidity and α exceeding 0.97, the anti-buckling performance of the anti-vibration device 1A according to this embodiment is further improved. In addition, compared with the case of the anti-vibration device in which the width W1 of the hard material 111 at the end is the same, and α exceeds 0.97, the anti-vibration device 1A related to this embodiment can extend the characteristic vibration period further. Furthermore, compared with the same width W2 of the central hard material 112, in the case of the anti-vibration device whose α exceeds 0.97, the anti-vibration device 1A related to this embodiment can suppress the compression side of the outer edge 111e in the width direction of the hard material 111 at the end. The resulting partial peeling.

Therefore, according to the anti-vibration device 1A according to the present embodiment, the anti-vibration device is excellent in buckling resistance and durability while maintaining the load supporting capability without impairing the required anti-vibration performance.

In addition, as mentioned above, in this embodiment, the terminal region R1 includes one terminal hard material 111 . The central region R2 includes a plurality of central hard materials 112 . In this embodiment, the width W2 of the central hard material 112 is the same as each other. The middle region R3 includes a middle hard material 113 .

Wherein, according to the present invention, the anti-vibration device 1 may have at least one end hard material in the end region R1 as the end hard material 111 . In this case, the outer edge 111e in the width direction of each end hard material 111 is positioned on the outer side in the width direction than the outer edge 112e in the width direction of the central hard material 112 . Further, each end hard material 111 is preferably such that the width W1 of the end hard material 111 becomes smaller as it approaches the middle region R3.

Moreover, the antivibration device 1 has at least one central hard material as the central hard material 112 in the central region R2. In this case, each central hard material 112 is preferably the same central hard material.

Furthermore, the anti-vibration device 1 has at least one intermediate hard material as the intermediate hard material 113 in the intermediate region R3. In this case, each middle hard material 113 is preferably located on the widthwise outer side than the widthwise outer edge 112e of the central hard material 112 and on the widthwise inner side than the widthwise outer edge 111e of the end hard material 111 . Further, each central hard material 113 is preferably such that the width W3 of the central hard material 113 becomes smaller from the end region R1 toward the central region R2 side.

In addition, specific examples of the number N1 of the terminal hard material 111, the number N2 of the central hard material 112, and the number N3 of the middle hard material 113 include 1 to 10 pieces for N1, and 1 to 3 pieces for N3.

Here, with reference to FIG. 1 , the end regions R1, R1, and R1 are described using imaginary division lines L1A~L3A and imaginary division lines L1B~L3B in the cross-sectional view in the up-and-down direction (observed on a cross-section including the central axis of the anti-vibration device). Central region R2 and middle region R3.

The division line L1A is a division line that passes through the lower plate body 20 and the fixing surface of the soft material 12 adjacent to the lower plate body 20 . The division line L3A passes through the soft material 12 between the lower end hard material 111 and the intermediate hard material 113 adjacent to the end hard material 111 , and divides the soft material 12 into upper and lower division lines. The division line L2A is a division line passing through the lower end surface of the lowermost central hard material 112 .

The division line L1B is a division line passing through the upper plate body 30 and the fixing surface of the soft material 12 that will be adjacent to the upper plate body 30 . The division line L3B passes through the soft material 12 between the upper end hard material 111 and the middle hard material 113 adjacent to the end hard material 111 , and divides the soft material 12 into upper and lower division lines. The division line L2B is a division line passing through the upper end surface of the uppermost central hard material 112 .

The two terminal regions R1 are partitioned as follows. The lower end region R1 is demarcated by the division line L1A and the division line L3A. The upper end region R1 is demarcated by the division line L1B and the division line L3B.

The central region R2 is divided by the division line L2A and the division line L2B.

The two middle regions R3 are divided as follows. The lower intermediate region R3 is demarcated by the division line L3A and the division line L2A. The middle region R3 on the upper side is divided by the division line L3B and the division line L2B.

The anti-vibration device 1A related to this embodiment is configured with a plurality of central hard materials 112 in the central region R2, and the width W2 of the plurality of central hard materials 112 is preferably the same. This embodiment Among them, as mentioned above, the width W2 of the plurality of central hard materials 112 is the same. In this case, even if the central hard materials 112 are plural, the required vibration-proof performance can be exhibited more reliably.

Also, in the antivibration device 1A according to this embodiment, the ratio β (=H3/H0) of the vertical height H3 to the vertical height H0 of the intermediate region R3 of the laminated structure 10 can be 0.01 to 0.1. When β is less than 0.01, or when β exceeds 0.1, the effect of suppressing buckling is small. In this embodiment, β is a numerical value in the range of 0.01 to 0.1. Therefore, according to the present embodiment, buckling becomes more difficult to occur.

In addition, the vertical height H2 of the central region R2 is preferably H2/H0=0.5-0.96. In this case, a sufficient anti-vibration function can be achieved. Also, in this case, the laminated structure 10 preferably uses the region where H2 is (0.5~0.96)×H0 as the central region R2, and the height H3 (H3') in the vertical direction of the middle region R3 is (0.01~0.1 )×H0 is the middle region R3, the outer regions are the end region R1, and the end hard material 111, the central hard material 112, and the middle hard material 113 are arranged in the regions R1-R3. More preferably, the region where H2 is 0.5~0.96×H0 is regarded as the central region R2, the region where H3(H3') is 0.01~0.1×H0 is regarded as the middle region R3, and the region where H1(H1') is 0.1~0.24× The region of H0 serves as the terminal region R1.

Next, in FIG. 2, reference numeral 1B is a vibration-proof device related to the second embodiment of the present invention. In this embodiment, the terminal region R1 includes a plurality (two in this embodiment) of terminal hard materials 111 . In this embodiment, the end hard materials 111 are the same end hard materials, and the width W1 of the end hard materials 111 is the same as each other. The central region R2 includes a plurality (ten in this embodiment) of central hard materials 112 . In this embodiment, the central hard material 112 is the same central hard material, and the width W2 of the central hard material 112 is the same as each other. The middle region R3 includes a plurality of (two in this embodiment) middle hard materials 113 . In this embodiment, the width W3 of the intermediate hard material 113 becomes smaller from the side of the end region R1 toward the side of the central region R2. In this embodiment, the width of each intermediate hard material 113 The outer edge 113e is located on the outer side in the width direction than the outer edge 112e in the width direction of the central hard material 112 and on the inner side in the width direction than the outer edge 111e in the width direction of the end hard material 111 .

The anti-vibration device 1B related to this embodiment is provided with a plurality of intermediate hard materials 113 in the middle region R3, and the width W3 of the plurality of intermediate hard materials 113 preferably decreases from the end region R1 side to the central region R2 side. In this embodiment, the width W3 of the plurality of intermediate hard materials 113 becomes smaller from the end region R1 side toward the center region R2 side. In this case, the localized stress concentration generated in the terminal region R1 can be further suppressed, and the durability can be further improved.

The anti-vibration device 1B related to this embodiment is equipped with a plurality of end hard materials 111 in the end region R1, and the width W1 of the plurality of end hard materials 111 is preferably the same. In this embodiment, the width W1 of the plurality of end hard materials 111 is the same. In this case, since the end hard materials 111 are plural, localized stress concentration generated in the end region R1 can be further suppressed, and buckling resistance and durability can be further improved.

In the anti-vibration device 1B related to this embodiment, the outer edges 111e and 113e in the width direction of the end hard material 111 adjacent to the middle hard material 113, the two middle hard materials 113, and the central hard material 112 adjacent to the middle hard material 111 The virtual ridge line L formed by the connection of , 112e is observed in the up-down direction section of the anti-vibration device 1B, and the angle A of the acute angle side formed with respect to the up-down direction may be 45°~80°. When the angle A is less than 45°, the effect of suppressing buckling is small. When the angle A exceeds 80°, the effect of suppressing buckling is small, and local peeling tends to occur on the compressed side of the widthwise outer edge 111e of the terminal hard material 111 . According to this embodiment, the angle A of the acute angle side formed by the imaginary ridge line L with respect to the vertical direction when viewed in the vertical direction of the anti-vibration device 1B is 45° to 80°. In this embodiment, the angle A is a numerical value in the range of 45°-80°. Therefore, according to the present embodiment, the buckling improvement effect is particularly high.

In particular, in the anti-vibration device 1B according to this embodiment, the imaginary ridge line L is linear when viewed in the vertical direction of the anti-vibration device 1B. In this case, it becomes more difficult to buckle.

As described above, according to the various embodiments of the present invention, it is possible to provide an anti-vibration device having excellent flexural performance and durability without impairing required anti-vibration performance.

In this embodiment, the outer shape (outline shape) of the laminated structure 10 is a combination of linear shapes when viewed in cross-section in the vertical direction of the anti-vibration device. In this case, the outline shape of the laminated structure 10 is a shape with a large difference between the widthwise outer edge 111e of the end hard material 111 and the widthwise outer edge 112e of the central hard material 112 when viewed in the vertical cross section, that is, , as shown in FIG. 1 , is a shape concaved toward the central axis O. Therefore, according to this embodiment, since the proportion of the soft material can be reduced compared with the case where the outer surface is curved, the shockproof performance can be improved. However, other anti-vibration devices related to the present invention have the outer edge 111e in the width direction of the end hard material 111 adjacent to the middle hard material 113 and the outer edge 113e in the width direction of the middle hard material 113 when viewed in the vertical direction of the anti-vibration device. The imaginary ridgeline formed by connecting the outer edges 112e in the width direction of the central hard material 112 adjacent to the intermediate hard material 113 is a curved line that is convex toward the central axis O. That is, according to the present invention, it is also included that the outer surface shape of the laminated structure 10 is a curved shape that is convex toward the central axis O, such as a cross-sectional arc shape or an arc-like shape when viewed in cross-section in the vertical direction of the anti-vibration device. By.

The more the proportion of the unique vibration period system soft material 12 is, the shorter it will be. Therefore, it is better to reduce the proportion of the soft material 12 . According to the anti-vibration device of the present invention, when viewed in the vertical direction of the anti-vibration device, compared with the anti-vibration device in which the outline shape of the laminated structure 10 is only convex toward the central axis O and becomes a curved shape, the soft material 12 occupies the ratio will decrease. Therefore, according to the anti-vibration device of the present invention, compared with the anti-vibration device whose outer surface is a curved shape, the anti-vibration performance is better.

As mentioned above, these are just a few embodiments of the present invention, and various changes can be made as long as they follow the scope of the claims. For example, according to the present invention, the antivibration device may include a plug (core material). Specifically, in each embodiment, a plug extending along the central axis O may be inserted through the central portion of the laminated structure 10 . The plug is preferably formed of metal such as lead or tin. The various configurations adopted in the above-mentioned embodiments can be appropriately replaced with each other. For example, in the shockproof device 1B related to the second embodiment, the width W1 of the plurality of end hard materials 111 is the same, but the width W1 of the plurality of end hard materials 111 can be the same as that of the middle hard material 113 related to the second embodiment It becomes smaller from the end region R1 side toward the center region R2 side. That is, according to the present invention, when the terminal region R1 is provided with a plurality of terminal hard materials 111, the width W1 of the plurality of terminal hard materials 111 can also increase from the central region R2 side to the terminal region R1 side.

(analysis)

In order to confirm the effect of the anti-vibration device related to the present invention, FEM (Finite Element Method) analysis based on W2/W1 (hereinafter also referred to as "FEM analysis based on width ratio") and FEM based on the angle A of the virtual ridge line L were performed. Two types of analysis (hereinafter also referred to as "angle-based FEM analysis"). In this FEM analysis, buckling deformation, rupture deformation and unique vibration period are verified. For the above-mentioned FEM analysis, Marc analysis software manufactured by MSC Software was used.

In the above-mentioned FEM analysis, an analysis model that reproduces the outline shape of the laminated structure 10 according to the first embodiment of the present invention is used. In the FEM analysis based on this width ratio, six analysis models were created. Also, in the FEM analysis based on this angle, five analysis models were created. The input load system used in these FEM analysis is 1300kN.

The mesh of the hard material is 54 meshes in a tetrahedron with a side of 50-120 mm per layer. The mesh of the soft material is 54 meshes in a tetrahedron with a side of 50-120 mm per layer. In addition, the following [Table 1] shows the parameters of the analysis model.

[Table 1]

[Table 2] below shows the buckling performance, durability performance (rupture performance) and shockproof performance evaluated based on the FEM analysis results based on the width ratio. Here, the "buckling deformation" refers to the deformation (%) when the analytical model buckles, and this deformation mainly occurs in the terminal region. Also, the so-called "improvement of buckling deformation" refers to the case where the buckling deformation of the conventional laminated structure (the laminated structure whose correlation performance is R=1 in this analysis) is set to 100 in the numerical range that does not include the shockproof device related to the present invention. , is the ratio of the buckling deformation (%) of the analytical model of the analytical object. Therefore, in this evaluation, the larger the value of improving the buckling deformation, the harder it is to generate buckling, and it is judged that the buckling performance is good. In addition, the so-called "cracking deformation" refers to the deformation (%) when the soft material is cracked, and the deformation mainly occurs in the end area. Therefore, in this evaluation, the larger the numerical value of the fracture deformation, the more difficult it is to cause fracture, and it is judged that the fracture performance is good. In addition, "NA" means that the numerical value cannot be used. Also, "100% equivalent period" T is obtained as follows. When drawing the displacement (x)-load (y) diagram of a laminated structure, it usually becomes circular. Here, when the position of the most + (positive) displacement x and the position of the most - (negative) displacement x on the cycle are connected by a straight line, the inclination of the straight line is k. Then, T=2π√(m/k) is used to obtain (the mass of the m-system laminated structure). Therefore, the larger the numerical value of the 100% equivalent period of this evaluation system, the better the shockproof performance is judged. [Table 2], at a buckling deformation of 400% The above cases are rated as ⊚ and are good evaluations. Also, when the structure is improved by 15% or more compared with the conventional structure, it becomes ◯, which is an almost good evaluation. Furthermore, x is an evaluation in which there is room for improvement other than that.

[Table 2]

Referring to Table 2, in the analytical model of W2/W1=0.55, the evaluation of durability and shockproof performance is considered to have room for improvement. On the other hand, in the analytical model of 0.6≦W2/W1, the evaluation of durability and shockproof performance is approved for good performance. In addition, in the analytical model of W2/W1=0.98 or more, it is considered that there is room for improvement in the evaluation of buckling performance. On the other hand, in the analytical model of W2/W1≦0.97, the buckling performance is recognized as good performance. Therefore, from these evaluation results, it can be seen that if the analytical model is in the range of 0.6≦W2/W1≦0.97, any one of buckling performance, durability performance (rupture performance), and shockproof performance is good. .

In addition, the following [Table 3] shows the buckling performance evaluated based on the FEM analysis results based on this angle. Here, "buckling deformation" and "improved buckling deformation" are the same as [Table 2]. In addition, the so-called "end tensile deformation" refers to the deformation related to the soft material at the end of the end hard material that is in contact with the outermost (opposite to the central part). The smaller this value is, the better it is. Furthermore, in [Table 3], the evaluation shown by ⊚, ◯ and × is also the same as [Table 2].

[table 3]

Referring to Table 3, in the analytical model in which the angle A of the virtual ridge line L is less than 40° and the analytical model in which the angle A is 85°, it is considered that there is room for improvement in the evaluation of buckling performance and warpage performance. On the other hand, in the virtual ridge line L In the analytical model where the angle A of L is 40°~85°, the buckling performance and warpage performance are recognized as good performance. Therefore, it is known that if the angle A of the virtual ridge line L is an analytical model in the range of 40° to 85°, the buckling performance will be good.

1A: Anti-vibration device (first embodiment)

10: Layered Constructs

11: Hard material

111: end hard material

112: central hard material

113: intermediate hard material

11e: The outer edge of the width direction of the hard material

111e: The outer edge of the width direction of the hard material at the end

112e: The outer edge of the central hard material in the width direction

113e: The outer edge of the width direction of the middle hard material

12: Soft material

13: outer layer

O: central axis

H0: the height of the laminated structure in the upper and lower directions

H1, H1': the height of the terminal area in the upper and lower direction

H2: The height of the central area in the upper and lower direction

H3, H3': Height in the upper and lower direction of the middle area

R1: terminal region

R2: central area

R3: middle area

W1: The width between the outer edges in the width direction of the hard material at the end

W2: The width between the outer edges of the central hard material in the width direction

W3: The width between the outer edges in the width direction of the middle hard material

L1A, L2A, L3A: imaginary division lines

Claims (10)

An anti-vibration device, which is an anti-vibration device provided with a layered structure formed by alternately arranging hard materials and soft materials in the up and down direction; a central region between the two end regions; and two intermediate regions adjacent to the central region and the end regions between the central region and the end regions; the hard material disposed in the end regions is at least one end Hard material; the hard material arranged in the central area is at least one central hard material; the hard material arranged in the middle area is at least one intermediate hard material; the outer edge of the end hard material in the width direction will be located The outer edge of the hard material in the width direction is closer to the outside in the width direction, and the outer edge of the middle hard material in the width direction will be located on the outer side of the width direction than the outer edge of the central hard material in the width direction, and will be closer to the outer edge of the hard material than the end hard material. The outer edge in the width direction should be close to the inner side in the width direction; further, the ratio (W2/W1) of the width W2 between the width direction outer edges of the central hard material to the width W1 between the width direction outer edges of the end hard material is 0.6≦ (W2/W1)≦0.97; under the vertical section observation of the anti-vibration device, the respective widths of the end hard material adjacent to the middle hard material, the middle hard material, and the central hard material adjacent to the middle hard material The angle A of the acute angle side formed by the virtual ridge line formed by connecting the outer edges of the direction with respect to the up and down direction is 45°~80°. An anti-vibration device, which is equipped with a laminated structure formed by alternately arranging hard materials and soft materials in the vertical direction; The laminated structural system is divided into: two end regions located on the upper side and the lower side respectively; a central region located between the two end regions; and an adjacent central region located between the central region and the end regions and the two intermediate regions of the end region; the hard material arranged in the end region is at least one end hard material; the hard material arranged in the central region is at least one central hard material; the hard material arranged in the middle region At least one intermediate hard material; the outer edge in the width direction of the end hard material will be located on the outer side in the width direction than the outer edge in the width direction of the central hard material, and the outer edge in the width direction of the intermediate hard material will be located on the outer side in the width direction The outer edge in the width direction of the central hard material will be closer to the outer side in the width direction, and will be closer to the inner side in the width direction than the outer edge in the width direction of the end hard material; further, the width W2 between the outer edges in the width direction of the central hard material is opposite to The ratio (W2/W1) of the width W1 between the outer edges of the hard material in the width direction is 0.6≦(W2/W1)≦0.8; under the section observation of the upper and lower direction of the anti-vibration device, the part adjacent to the middle hard material The angle A of the acute angle side formed by the virtual ridge line formed by connecting the end hard material with the middle hard material and the outer edges of the central hard material adjacent to the middle hard material in the width direction relative to the up-down direction is 45°~80° . Such as the anti-vibration device of claim 1 or 2 of the patent scope, wherein the middle area is configured with a plurality of the middle hard materials; the width of the plurality of middle hard materials will become smaller from the side of the end area to the side of the central area. As for the anti-vibration device in claim 1 or 2 of the patent scope, wherein the central region is provided with a plurality of the central hard materials; the widths of the plurality of central hard materials are the same. As for the anti-vibration device in claim 1 or 2 of the patent scope, wherein the end area is equipped with multiple end hard materials; the width of the plurality of end hard materials is the same. Such as the anti-vibration device of claim 1 or 2 of the patent scope, wherein the end area is configured with a plurality of end hard materials; the width of the plurality of end hard materials will increase from the central area side to the end area side. For example, the anti-vibration device of item 1 of the scope of the patent application, wherein the imaginary ridge line is straight when viewed in the vertical section of the anti-vibration device. Such as the anti-vibration device of claim 1 or 2 of the patent scope, wherein the ratio (H3/H0) of the vertical height H3 of the middle area to the vertical height H0 of the laminated structure is 0.01~0.1. As for the anti-vibration device in claim 1 or 2 of the scope of the patent application, wherein the outer shape of the laminated structure is combined with a linear shape when viewed in section from the top and bottom of the anti-vibration device. Such as the anti-vibration device of claim 1 or 2 of the patent scope, wherein the ratio (W3/W1) of the width W3 between the widthwise outer edges of the middle hard material to the width W1 between the widthwise outer edges of the end hard material is 0.61 ≦(W3/W1)≦0.96.

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