JP2017110679A - Vibration isolator - Google Patents

Vibration isolator Download PDF

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JP2017110679A
JP2017110679A JP2015243227A JP2015243227A JP2017110679A JP 2017110679 A JP2017110679 A JP 2017110679A JP 2015243227 A JP2015243227 A JP 2015243227A JP 2015243227 A JP2015243227 A JP 2015243227A JP 2017110679 A JP2017110679 A JP 2017110679A
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leg
bracket
vibration
leg portion
vibration isolator
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JP6513018B2 (en
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秀寿 伊藤
Hidehisa Ito
秀寿 伊藤
宏治 中村
Koji Nakamura
宏治 中村
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Bridgestone Corp
Toyota Motor Corp
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Bridgestone Corp
Toyota Motor Corp
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Abstract

PROBLEM TO BE SOLVED: To open up a lower space while maintaining vibration isolating performance.SOLUTION: A vibration isolator comprises: a bracket 11 coupled to one of a vibration generation part and a vibration reception part; a fitting member 12 fitted to the other of the two; and an elastic body 13 elastically coupling the bracket and the fitting member to each other. The elastic body includes a first leg part 14 and a second leg part 15 which project downward from the fitting member and are coupled to the bracket, and are elastically deformable and columnar. The bracket includes a lower fitting part 16 to which the first leg part is coupled and an upper fitting part 17 to which the second leg part is coupled and which is located above the lower fitting part and below the fitting member. A center axis O2 of the second leg part has a larger angle of inclination relative to a vertical direction than a center axis O1 of the first leg part.SELECTED DRAWING: Figure 2

Description

本発明は、防振装置に関するものである。   The present invention relates to a vibration isolator.

従来から、振動発生部および振動受部のうちのいずれか一方に連結されるブラケット、および他方に連結される取付け部材と、これらのブラケットと取付け部材とを弾性的に連結した弾性体と、を備え、弾性体は、取付け部材から下方に向けて突出し、ブラケットに連結した弾性変形可能な第１脚部および第２脚部を備える防振装置が知られている。   Conventionally, a bracket connected to one of the vibration generating portion and the vibration receiving portion, an attachment member connected to the other, and an elastic body elastically connecting the bracket and the attachment member, An anti-vibration device is provided that includes an elastic body that protrudes downward from an attachment member and includes elastically deformable first and second legs connected to a bracket.

特開２０１１−２１４６０８号公報JP 2011-214608 A

しかしながら、前記従来の防振装置では、下方のスペースを空けるために、上下方向の高さを低くすると、第１脚部および第２脚部の各長さが短くなり、防振性能を維持することが困難であるという問題がある。   However, in the conventional vibration isolator, if the height in the vertical direction is lowered in order to make a lower space, the lengths of the first leg portion and the second leg portion are shortened, and the vibration isolating performance is maintained. There is a problem that it is difficult.

この発明は、このような事情を考慮してなされたもので、防振性能を維持しつつ、下方のスペースを空けることができる防振装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vibration isolator capable of opening a lower space while maintaining the vibration isolating performance.

上記課題を解決して、このような目的を達成するために、本発明の防振装置は、振動発生部および振動受部のうちのいずれか一方に連結されるブラケット、および他方に連結される取付け部材と、これらのブラケットと取付け部材とを弾性的に連結した弾性体と、を備え、前記弾性体は、前記取付け部材から下方に向けて突出し、前記ブラケットに連結した弾性変形可能な柱状の第１脚部および第２脚部を備え、前記ブラケットは、前記第１脚部が連結される下方取付け部と、前記第２脚部が連結され、前記下方取付け部より上方で、かつ前記取付け部材より下方に位置する上方取付け部と、を備え、前記第２脚部の中心軸線は、前記第１脚部の中心軸線よりも上下方向に対する傾斜角度が大きいことを特徴とする。   In order to solve the above-described problems and achieve such an object, the vibration isolator of the present invention is connected to a bracket connected to either one of the vibration generator and the vibration receiver, and to the other. A mounting member; and an elastic body that elastically connects the bracket and the mounting member. The elastic body protrudes downward from the mounting member, and is an elastically deformable columnar member connected to the bracket. The bracket includes a first leg portion and a second leg portion, and the bracket includes a lower mounting portion to which the first leg portion is coupled, and a second mounting portion to which the second leg portion is coupled and above the lower mounting portion and the mounting. And an upper mounting portion positioned below the member, wherein the central axis of the second leg has a larger inclination angle with respect to the vertical direction than the central axis of the first leg.

この発明によれば、上方取付け部が、下方取付け部より上方に位置しているので、上方取付け部が、下方取付け部より上方に位置している分だけ、この防振装置の下方のスペースを空けることができる。
しかも、上方取付け部に連結される柱状の第２脚部の中心軸線が、下方取付け部に連結される柱状の第１脚部の中心軸線よりも上下方向に対する傾斜角度が大きくなっているので、上方取付け部が、下方取付け部より上方に位置した分だけ、第２脚部の上下方向の大きさが小さくなったとしても、第２脚部の、取付け部材からの突出長さを長く確保することが可能になり、防振性能を維持することができる。 According to this invention, since the upper mounting portion is located above the lower mounting portion, the space below the vibration isolator is increased by the amount that the upper mounting portion is located above the lower mounting portion. Can be vacant.
Moreover, since the central axis of the columnar second leg connected to the upper mounting portion has a larger inclination angle with respect to the vertical direction than the central axis of the columnar first leg connected to the lower mounting portion, Even if the size of the second leg portion in the vertical direction is reduced by the amount that the upper attachment portion is located above the lower attachment portion, the projection length of the second leg portion from the attachment member is ensured to be long. Therefore, the vibration isolation performance can be maintained.

ここで、前記ブラケットは、前記下方取付け部と前記上方取付け部とを連結する連結部を備え、前記第１脚部は、前記連結部に近接若しくは当接してもよい。
この場合、第１脚部が、連結部に近接若しくは当接しているので、第１脚部が、下方取付け部から外れるのを抑制することができるとともに、第１脚部を下方取付け部に装着するに際し、連結部に突き当てるなどすることが可能になり、第１脚部を下方取付け部に容易に装着することができる。 Here, the bracket may include a connecting portion that connects the lower mounting portion and the upper mounting portion, and the first leg portion may approach or contact the connecting portion.
In this case, since the first leg portion is close to or in contact with the connecting portion, the first leg portion can be prevented from being detached from the lower mounting portion, and the first leg portion is attached to the lower mounting portion. In doing so, it is possible to abut against the connecting portion, and the first leg portion can be easily attached to the lower mounting portion.

また、前記下方取付け部には、前記連結部と対向して配置され、前記第１脚部を挟み込む抜け止め部が形成されてもよい。
この場合、第１脚部が、連結部と抜け止め部とにより挟まれるので、第１脚部が、下方取付け部から、連結部と抜け止め部とが互いに対向する対向方向に外れるのを防ぐことができる。 The lower mounting portion may be formed with a retaining portion that is disposed to face the connecting portion and sandwiches the first leg portion.
In this case, since the first leg portion is sandwiched between the connecting portion and the retaining portion, the first leg portion is prevented from coming off from the lower mounting portion in the facing direction in which the connecting portion and the retaining portion face each other. be able to.

また、前記上方取付け部には、前記第２脚部における中心軸線方向の両端面のうち、前記取付け部材側と反対側の先端面が当接した突き当て部が形成されてもよい。
この場合、上方取付け部に、第２脚部の先端面が当接した突き当て部が形成されているので、この防振装置に、第２脚部の先端面が、上方取付け部の突き当て部を相対的に押圧する方向の負荷が加えられたときに、大きな反力が生ずることとなり、この方向のバネを高めることができる。 The upper mounting portion may be formed with an abutting portion in which a tip end surface opposite to the mounting member side of the second leg portion in the central axis direction is in contact.
In this case, since the abutting portion where the tip surface of the second leg abuts is formed on the upper mounting portion, the tip surface of the second leg is abutted against the upper mounting portion on this vibration isolator. When a load in the direction of relatively pressing the part is applied, a large reaction force is generated, and the spring in this direction can be increased.

また、前記上方取付け部には、前記第２脚部における中心軸線方向の両端面のうち、前記取付け部材側と反対側の先端面が当接した突き当て部が形成され、前記連結部、前記抜け止め部、および前記突き当て部は、表裏面が互いに平行な板状に形成されてもよい。
この場合、この防振装置に、第２脚部の先端面が、上方取付け部の突き当て部を相対的に押圧する方向の負荷が加えられたときに、第１脚部によって連結部を押圧させることも可能になり、このときに生ずる反力をより一層高めることが可能になり、この方向のバネを確実に高めることができる。
また、抜け止め部および突き当て部によって、弾性体が前記対向方向の全長にわたって挟まれることとなり、この対向方向の入力振動を安定して減衰、吸収することができる。 Further, the upper mounting portion is formed with an abutting portion in which the tip end surface on the opposite side to the mounting member side of the second leg portion in the central axis direction is in contact with the connecting portion, The retaining portion and the abutting portion may be formed in a plate shape whose front and back surfaces are parallel to each other.
In this case, when the load in the direction in which the distal end surface of the second leg portion relatively presses the abutting portion of the upper mounting portion is applied to the vibration isolator, the connecting portion is pressed by the first leg portion. The reaction force generated at this time can be further increased, and the spring in this direction can be reliably increased.
Further, the elastic body is sandwiched by the retaining portion and the abutting portion over the entire length in the facing direction, and the input vibration in the facing direction can be stably attenuated and absorbed.

この発明によれば、防振性能を維持しつつ、下方のスペースを空けることができる。   According to the present invention, it is possible to make a lower space while maintaining the vibration isolation performance.

本発明に係る一実施形態として示した防振装置の斜視図である。It is a perspective view of a vibration isolator shown as one embodiment concerning the present invention. 図１に示す防振装置のＩＩ−ＩＩ線矢視断面図である。FIG. 2 is a cross-sectional view taken along the line II-II of the vibration isolator shown in FIG. 1.

以下、本発明に係る防振装置の一実施形態を、図１および図２を参照しながら説明する。
この防振装置１は、振動発生部および振動受部のうちのいずれか一方に連結されるブラケット１１、および他方に連結される取付け部材１２と、これらのブラケット１１と取付け部材１２とを弾性的に連結した弾性体１３と、を備えている。
ブラケット１１は、水平方向に延びる本体筒部１９を備えている。取付け部材１２は、水平方向に延びる長方形状の板状に形成され、表裏面を上下方向に向けた状態で、本体筒部１９の内側に差し込まれている。取付け部材１２は、本体筒部１９の中心軸線より上方に配設されている。
以下、本体筒部１９および取付け部材１２が延びる方向を左右方向という。 Hereinafter, an embodiment of a vibration isolator according to the present invention will be described with reference to FIGS. 1 and 2.
The vibration isolator 1 elastically couples the bracket 11 connected to one of the vibration generating portion and the vibration receiving portion, the attachment member 12 connected to the other, and the bracket 11 and the attachment member 12. And an elastic body 13 connected to.
The bracket 11 includes a main body cylinder portion 19 extending in the horizontal direction. The attachment member 12 is formed in a rectangular plate shape extending in the horizontal direction, and is inserted into the inside of the main body cylinder portion 19 with the front and back surfaces directed in the vertical direction. The attachment member 12 is disposed above the central axis of the main body cylinder portion 19.
Hereinafter, the direction in which the main body cylinder portion 19 and the attachment member 12 extend is referred to as the left-right direction.

取付け部材１２における左右方向の一端部が、本体筒部１９の内側に位置している。取付け部材１２における左右方向の一端部に、下方に向けて突出する突部１２ａが配設されている。取付け部材１２および突部１２ａにおける左右方向の一端面は面一となっている。
ブラケット１１の本体筒部１９は、左右方向から見て下方に向けて開口した逆Ｕ字状に形成されている。本体筒部１９の下部のうち、左右方向の他端部１９ａより一端部側に位置する一端側部分１９ｂは、上方に向けて窪んでいる。 One end portion of the attachment member 12 in the left-right direction is located inside the main body cylinder portion 19. A protrusion 12 a that protrudes downward is disposed at one end of the mounting member 12 in the left-right direction. The left and right end surfaces of the mounting member 12 and the protrusion 12a are flush with each other.
The main body cylinder portion 19 of the bracket 11 is formed in an inverted U-shape that opens downward as viewed from the left-right direction. Of the lower part of the main body cylinder part 19, one end side part 19b located on the one end part side from the other end part 19a in the left-right direction is recessed upward.

弾性体１３は、取付け部材１２から下方に向けて突出し、ブラケット１１に連結した弾性変形可能な柱状の第１脚部１４および第２脚部１５を備えている。第１脚部１４および第２脚部１５はそれぞれ、図２に示されるような、上下方向および左右方向の双方向に沿う断面視において、中心軸線Ｏ１、Ｏ２が取付け部材１２から下方に向けて延びる柱状に形成されている。弾性体１３は例えばゴム材料等で形成されている。
第１脚部１４および第２脚部１５は、左右方向に並べられて配置されている。弾性体１３は、取付け部材１２に接着され、ブラケット１１に非接着状態で当接している。なお、弾性体１３はブラケット１１に接着してもよい。 The elastic body 13 includes a first leg portion 14 and a second leg portion 15 that protrude downward from the mounting member 12 and are elastically deformable and connected to the bracket 11. As shown in FIG. 2, the first leg portion 14 and the second leg portion 15 have the central axes O1 and O2 facing downward from the mounting member 12 in a cross-sectional view along both the vertical and horizontal directions. It is formed in an extending column shape. The elastic body 13 is made of, for example, a rubber material.
The first leg portion 14 and the second leg portion 15 are arranged in the left-right direction. The elastic body 13 is bonded to the mounting member 12 and is in contact with the bracket 11 in a non-bonded state. The elastic body 13 may be bonded to the bracket 11.

第１脚部１４は、上方から下方に向かうに従い漸次、左右方向のうち第２脚部１５から離れる方向に延びる上部１４ａと、上部１４ａの下端から下方に真っ直ぐ延びる下部１４ｂと、を備えている。第１脚部１４は、取付け部材１２の下面、および突部１２ａにおける左右方向の他端面にわたって一体に接着されている。
第２脚部１５は、上方から下方に向かうに従い漸次、左右方向のうち第１脚部１４から離れる方向に延びている。第２脚部１５は、取付け部材１２および突部１２ａにおける左右方向の一端面に接着されている。第２脚部１５における下方を向く下面のうち、取付け部材１２側と反対側の先端部１５ａは、水平方向に延びる平坦面となっている。 The first leg portion 14 includes an upper portion 14a that gradually extends in the left-right direction away from the second leg portion 15 and a lower portion 14b that extends straight downward from the lower end of the upper portion 14a. . The first leg portion 14 is integrally bonded across the lower surface of the attachment member 12 and the other end surface in the left-right direction of the protrusion 12a.
The second leg portion 15 gradually extends in a direction away from the first leg portion 14 in the left-right direction as it goes downward from above. The 2nd leg part 15 is adhere | attached on the one end surface of the left-right direction in the attachment member 12 and the protrusion 12a. Of the lower surface of the second leg portion 15 facing downward, the tip portion 15a opposite to the mounting member 12 side is a flat surface extending in the horizontal direction.

第２脚部１５の下面の先端部１５ａは、第１脚部１４の下端面１４ｃより上方に位置している。なお図示の例では、第２脚部１５の体積は、第１脚部１４の体積より大きくなっているが、第２脚部１５の体積を、第１脚部１４の体積以下としてもよい。
そして、第２脚部１５の中心軸線Ｏ２は、第１脚部１４の中心軸線Ｏ１よりも上下方向に対する傾斜角度が大きくなっている。 The front end portion 15 a on the lower surface of the second leg portion 15 is located above the lower end surface 14 c of the first leg portion 14. In the illustrated example, the volume of the second leg portion 15 is larger than the volume of the first leg portion 14, but the volume of the second leg portion 15 may be equal to or less than the volume of the first leg portion 14.
The inclination angle of the center axis O2 of the second leg 15 with respect to the vertical direction is larger than that of the center axis O1 of the first leg 14.

ブラケット１１は、本体筒部１９の下側開口部を閉塞した下板部２０を備えている。
下板部２０は、第１脚部１４が連結される下方取付け部１６と、第２脚部１５が連結され、下方取付け部１６より上方で、かつ取付け部材１２より下方に位置する上方取付け部１７と、下方取付け部１６と上方取付け部１７とを連結する連結部１８と、を備えている。下板部２０は、本体筒部１９よりも左右方向および上下方向の双方向に直交する前後方向の長さが長く、本体筒部１９から前後方向の両側に突出している。下方取付け部１６および上方取付け部１７は、表裏面が上下方向を向く前後方向に長い長方形状に形成されている。連結部１８は、表裏面が左右方向を向く前後方向に長い長方形状に形成されている。 The bracket 11 includes a lower plate portion 20 that closes the lower opening of the main body cylinder portion 19.
The lower plate portion 20 is connected to the lower mounting portion 16 to which the first leg portion 14 is connected and the second leg portion 15, and is located above the lower mounting portion 16 and below the mounting member 12. 17, and a connecting portion 18 that connects the lower mounting portion 16 and the upper mounting portion 17. The lower plate portion 20 is longer than the main body cylinder portion 19 in the front-rear direction perpendicular to the left and right directions and the upper and lower directions, and protrudes from the main body cylinder portion 19 to both sides in the front-rear direction. The lower mounting portion 16 and the upper mounting portion 17 are formed in a rectangular shape that is long in the front-rear direction with the front and back surfaces facing the vertical direction. The connecting portion 18 is formed in a rectangular shape that is long in the front-rear direction with the front and back surfaces facing the left-right direction.

第１脚部１４の下端面１４ｃが、下方取付け部１６に連結されている。第１脚部１４の下端面１４ｃが全域にわたって下方取付け部１６の上面に当接している。第２脚部１５の下面の先端部１５ａが、上方取付け部１７に連結されている。第２脚部１５の下面の先端部１５ａが全域にわたって上方取付け部１７の上面に当接している。上方取付け部１７の上面と、第２脚部１５の下面のうち、先端部１５ａを除く部分と、の間には、上下方向の隙間が設けられている。なお、ブラケット１１の本体筒部１９における前記一端側部分１９ｂの下端縁が、上方取付け部１７の上面に当接している。   A lower end surface 14 c of the first leg portion 14 is connected to the lower mounting portion 16. The lower end surface 14c of the first leg portion 14 is in contact with the upper surface of the lower mounting portion 16 over the entire area. A tip portion 15 a on the lower surface of the second leg portion 15 is connected to the upper mounting portion 17. The tip 15a on the lower surface of the second leg portion 15 is in contact with the upper surface of the upper mounting portion 17 over the entire area. A vertical gap is provided between the upper surface of the upper mounting portion 17 and the portion of the lower surface of the second leg portion 15 excluding the tip portion 15a. The lower end edge of the one end side portion 19 b of the main body cylinder portion 19 of the bracket 11 is in contact with the upper surface of the upper mounting portion 17.

連結部１８に第１脚部１４が近接若しくは当接している。図示の例では、第１脚部１４の下部１４ｂのうち、第２脚部１５側を向く内側面が連結部１８に当接している。第１脚部１４の下部１４ｂの内側面が全域にわたって連結部１８に当接している。
下方取付け部１６に、連結部１８と対向して配置され、第１脚部１４を挟み込む抜け止め部２１が形成されている。第１脚部１４は、連結部１８と抜け止め部２１とにより左右方向に挟まれている。なお、ブラケット１１の本体筒部１９の前記他端部１９ａが、連結部１８と抜け止め部２１との間に嵌合されている。本体筒部１９の前記他端部１９ａにおける下端縁が、下方取付け部１６の上面に当接している。
抜け止め部２１の上端は、連結部１８の上端より下方に位置している。抜け止め部２１は、第１脚部１４における前後方向の全長にわたって近接若しくは当接している。抜け止め部２１は、表裏面が左右方向を向く前後方向に長い長方形状に形成されている。 The first leg portion 14 is close to or in contact with the connecting portion 18. In the illustrated example, an inner side surface of the lower portion 14 b of the first leg portion 14 facing the second leg portion 15 is in contact with the connecting portion 18. The inner surface of the lower portion 14b of the first leg 14 is in contact with the connecting portion 18 over the entire area.
A retaining portion 21 that is disposed opposite to the connecting portion 18 and sandwiches the first leg portion 14 is formed on the lower mounting portion 16. The first leg portion 14 is sandwiched between the connecting portion 18 and the retaining portion 21 in the left-right direction. The other end portion 19 a of the main body cylinder portion 19 of the bracket 11 is fitted between the connecting portion 18 and the retaining portion 21. The lower end edge of the other end portion 19 a of the main body cylinder portion 19 is in contact with the upper surface of the lower mounting portion 16.
The upper end of the retaining portion 21 is located below the upper end of the connecting portion 18. The retaining portion 21 is close to or in contact with the entire length of the first leg portion 14 in the front-rear direction. The retaining portion 21 is formed in a rectangular shape that is long in the front-rear direction with the front and back surfaces facing the left-right direction.

上方取付け部１７に、第２脚部１５における中心軸線Ｏ２方向の両端面のうち、取付け部材１２側と反対側の先端面１５ｂが当接した突き当て部２２が形成されている。第２脚部１５の先端面１５ｂは、ブラケット１１の本体筒部１９から左右方向の外側に突出している。なお、第１脚部１４は、本体筒部１９の内側に位置している。
突き当て部２２は、上方取付け部１７のうち、連結部１８側と反対側の端部に形成されている。突き当て部２２の上端は、第２脚部１５の先端面１５ｂより上方に位置している。第２脚部１５の先端面１５ｂが全域にわたって、突き当て部２２に当接している。突き当て部２２は、表裏面が左右方向を向く前後方向に長い長方形状に形成されている。
連結部１８、抜け止め部２１、および突き当て部２２は、表裏面が互いに平行な板状に形成されている。 The upper mounting portion 17 is formed with an abutting portion 22 that is in contact with the end surface 15b opposite to the mounting member 12 side of both end surfaces of the second leg portion 15 in the central axis O2 direction. The distal end surface 15 b of the second leg portion 15 protrudes outward in the left-right direction from the main body cylinder portion 19 of the bracket 11. The first leg portion 14 is positioned inside the main body cylinder portion 19.
The abutting portion 22 is formed at the end of the upper mounting portion 17 on the side opposite to the connecting portion 18 side. The upper end of the abutting portion 22 is located above the distal end surface 15 b of the second leg portion 15. The distal end surface 15b of the second leg portion 15 is in contact with the abutting portion 22 over the entire area. The abutting portion 22 is formed in a rectangular shape that is long in the front-rear direction with the front and back surfaces facing the left-right direction.
The connecting portion 18, the retaining portion 21, and the abutting portion 22 are formed in a plate shape whose front and back surfaces are parallel to each other.

第２脚部１５の先端面１５ｂは、突き当て部２２に固定されている。
例えば、第２脚部１５の先端面１５ｂを、突き当て部２２に接着することで、第２脚部１５の先端面１５ｂを突き当て部２２に固定してもよいし、また、第２脚部１５の先端面１５ｂにボルトを加硫接着し、突き当て部２２にこのボルトの挿通孔を形成し、挿通孔に挿通したボルトにナットを螺着することで、第２脚部１５の先端面１５ｂを突き当て部２２に固定してもよいし、また、第２脚部１５の先端面１５ｂに板体を加硫接着し、この板体に突き当て部２２における前後方向の両端部を抱き込ませるように折曲加工を施すことで、第２脚部１５の先端面１５ｂを突き当て部２２に固定してもよい。また、第２脚部１５の先端面１５ｂは、突き当て部２２に直接当接させる構成に限らず、例えば板体等を介して突き当て部２２に当接させてもよい。
なお図示の例では、第１脚部１４、および第２脚部１５の中心軸線Ｏ１、Ｏ２方向の長さが、前後方向の長さより短くなっているが、第１脚部１４、および第２脚部１５の中心軸線Ｏ１、Ｏ２方向の長さを、前後方向の長さより長くしてもよい。 The distal end surface 15 b of the second leg portion 15 is fixed to the abutting portion 22.
For example, the distal end surface 15b of the second leg portion 15 may be bonded to the abutting portion 22 to fix the distal end surface 15b of the second leg portion 15 to the abutting portion 22, or the second leg A bolt is vulcanized and bonded to the distal end surface 15b of the portion 15, an insertion hole for the bolt is formed in the abutting portion 22, and a nut is screwed into the bolt inserted into the insertion hole, whereby the distal end of the second leg portion 15 The surface 15b may be fixed to the abutting portion 22, or a plate body is vulcanized and bonded to the distal end surface 15b of the second leg portion 15, and both end portions in the front-rear direction of the abutting portion 22 are attached to the plate body. You may fix the front end surface 15b of the 2nd leg part 15 to the abutting part 22 by performing a bending process so that it may be embraced. Moreover, the front end surface 15b of the second leg portion 15 is not limited to the configuration in which the front end surface 15b is in direct contact with the abutting portion 22, and may be in contact with the abutting portion 22 through a plate body or the like, for example.
In the illustrated example, the lengths of the first leg portion 14 and the second leg portion 15 in the central axis O1 and O2 directions are shorter than the lengths in the front-rear direction. The length of the leg 15 in the direction of the central axis O1, O2 may be longer than the length in the front-rear direction.

以上説明したように、本実施形態による防振装置１によれば、上方取付け部１７が、下方取付け部１６より上方に位置しているので、上方取付け部１７が、下方取付け部１６より上方に位置している分だけ、この防振装置１の下方のスペースを空けることができる。
しかも、上方取付け部１７に連結される柱状の第２脚部１５の中心軸線Ｏ２が、下方取付け部１６に連結される柱状の第１脚部１４の中心軸線Ｏ１よりも上下方向に対する傾斜角度が大きくなっているので、上方取付け部１７が、下方取付け部１６より上方に位置した分だけ、第２脚部１５の上下方向の大きさが小さくなったとしても、第２脚部１５の、取付け部材１２からの突出長さを長く確保することが可能になり、防振性能を維持することができる。 As described above, according to the vibration isolator 1 according to the present embodiment, since the upper mounting portion 17 is located above the lower mounting portion 16, the upper mounting portion 17 is located above the lower mounting portion 16. The space below the vibration isolator 1 can be made as much as it is located.
In addition, the central axis O2 of the columnar second leg portion 15 connected to the upper mounting portion 17 has an inclination angle with respect to the vertical direction higher than the central axis O1 of the columnar first leg portion 14 connected to the lower mounting portion 16. Since the upper mounting portion 17 is positioned higher than the lower mounting portion 16, the mounting height of the second leg portion 15 is reduced even if the vertical size of the second leg portion 15 is reduced. It becomes possible to ensure a long protruding length from the member 12 and maintain the vibration isolation performance.

また、第１脚部１４が、連結部１８に近接若しくは当接しているので、第１脚部１４が、下方取付け部１６から外れるのを抑制することができるとともに、第１脚部１４を下方取付け部１６に装着するに際し、連結部１８に突き当てるなどすることが可能になり、第１脚部１４を下方取付け部１６に容易に装着することができる。
また、第１脚部１４が、連結部１８と抜け止め部２１とにより挟まれるので、第１脚部１４が、下方取付け部１６から、連結部１８と抜け止め部２１とが互いに対向する左右方向に外れるのを防ぐことができる。 Moreover, since the 1st leg part 14 adjoins or contact | abuts to the connection part 18, while being able to suppress that the 1st leg part 14 remove | deviates from the downward attachment part 16, the 1st leg part 14 is made downward When attaching to the attachment portion 16, it is possible to abut against the connecting portion 18, and the first leg portion 14 can be easily attached to the lower attachment portion 16.
Further, since the first leg portion 14 is sandwiched between the connecting portion 18 and the retaining portion 21, the first leg portion 14 extends from the lower mounting portion 16 to the left and right sides where the connecting portion 18 and the retaining portion 21 face each other. It can be prevented from coming off in the direction.

また、上方取付け部１７に、第２脚部１５の先端面１５ｂが当接した突き当て部２２が形成されているので、この防振装置１に、第２脚部１５の先端面１５ｂが、上方取付け部１７の突き当て部２２を相対的に押圧する方向の負荷が加えられたときに、大きな反力が生ずることとなり、この方向のバネを高めることができる。
また、連結部１８、抜け止め部２１、および突き当て部２２が、表裏面が互いに平行な板状に形成されているので、この防振装置１に、第２脚部１５の先端面１５ｂが、上方取付け部１７の突き当て部２２を相対的に押圧する方向の負荷が加えられたときに、第１脚部１４によって連結部１８を押圧させることも可能になり、このときに生ずる反力をより一層高めることが可能になり、この方向のバネを確実に高めることができる。
また、抜け止め部２１および突き当て部２２によって、弾性体１３が左右方向の全長にわたって挟まれることとなり、左右方向の入力振動を安定して減衰、吸収することができる。 Further, since the abutting portion 22 with which the tip surface 15b of the second leg portion 15 abuts is formed on the upper mounting portion 17, the tip surface 15b of the second leg portion 15 is attached to the vibration isolator 1. When a load in the direction of relatively pressing the abutting portion 22 of the upper mounting portion 17 is applied, a large reaction force is generated, and the spring in this direction can be increased.
Further, since the connecting portion 18, the retaining portion 21, and the abutting portion 22 are formed in a plate shape whose front and back surfaces are parallel to each other, the tip surface 15 b of the second leg portion 15 is provided on the vibration isolator 1. When the load in the direction of relatively pressing the abutting portion 22 of the upper mounting portion 17 is applied, the connecting portion 18 can be pressed by the first leg portion 14, and the reaction force generated at this time Can be further increased, and the spring in this direction can be reliably increased.
Further, the elastic body 13 is sandwiched by the retaining portion 21 and the abutting portion 22 over the entire length in the left-right direction, and the input vibration in the left-right direction can be stably attenuated and absorbed.

なお、本発明の技術範囲は、前述した各実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。   The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

例えば、前記実施形態では、連結部１８を備えるブラケット１１を示したが、連結部１８は設けなくてもよく、また、抜け止め部２１を備える下方取付け部１６を示したが、抜け止め部２１は設けなくてもよく、また、突き当て部２２を備える上方取付け部１７を示したが、突き当て部２２は設けなくてもよい。   For example, although the bracket 11 including the connecting portion 18 is shown in the embodiment, the connecting portion 18 may not be provided, and the lower mounting portion 16 including the retaining portion 21 is illustrated. Although the upper mounting portion 17 including the abutting portion 22 is shown, the abutting portion 22 may not be provided.

その他、本発明の趣旨を逸脱しない範囲で、上記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、上記した変形例を適宜組み合わせてもよい。   In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

１ 防振装置
１１ ブラケット
１２ 取付け部材
１３ 弾性体
１４ 第１脚部
１５ 第２脚部
１５ｂ 先端面
１６ 下方取付け部
１７ 上方取付け部
１８ 連結部
２１ 抜け止め部
２２ 突き当て部
Ｏ１、Ｏ２ 中心軸線 DESCRIPTION OF SYMBOLS 1 Vibration isolator 11 Bracket 12 Mounting member 13 Elastic body 14 1st leg part 15 2nd leg part 15b Front end surface 16 Lower attachment part 17 Upper attachment part 18 Connection part 21 Retaining part 22 Butting part O1, O2 Center axis

Claims (5)

振動発生部および振動受部のうちのいずれか一方に連結されるブラケット、および他方に連結される取付け部材と、
これらのブラケットと取付け部材とを弾性的に連結した弾性体と、を備え、
前記弾性体は、前記取付け部材から下方に向けて突出し、前記ブラケットに連結した弾性変形可能な柱状の第１脚部および第２脚部を備え、
前記ブラケットは、前記第１脚部が連結される下方取付け部と、前記第２脚部が連結され、前記下方取付け部より上方で、かつ前記取付け部材より下方に位置する上方取付け部と、を備え、
前記第２脚部の中心軸線は、前記第１脚部の中心軸線よりも上下方向に対する傾斜角度が大きいことを特徴とする防振装置。 A bracket connected to one of the vibration generating part and the vibration receiving part, and an attachment member connected to the other;
An elastic body that elastically connects these brackets and the mounting member,
The elastic body includes a first leg part and a second leg part that protrude downward from the mounting member and are elastically deformable and connected to the bracket.
The bracket includes a lower attachment portion to which the first leg portion is connected, and an upper attachment portion to which the second leg portion is connected, and is located above the lower attachment portion and below the attachment member. Prepared,
The anti-vibration device according to claim 1, wherein the central axis of the second leg has a larger inclination angle with respect to the vertical direction than the central axis of the first leg. 前記ブラケットは、前記下方取付け部と前記上方取付け部とを連結する連結部を備え、
前記第１脚部は、前記連結部に近接若しくは当接していることを特徴とする請求項１に記載の防振装置。 The bracket includes a connecting portion that connects the lower mounting portion and the upper mounting portion;
The vibration isolator according to claim 1, wherein the first leg portion is in proximity to or in contact with the connecting portion. 前記下方取付け部には、前記連結部と対向して配置され、前記第１脚部を挟み込む抜け止め部が形成されていることを特徴とする請求項２に記載の防振装置。   The vibration isolator according to claim 2, wherein the lower mounting portion is formed with a retaining portion that is disposed to face the connecting portion and sandwiches the first leg portion. 前記上方取付け部には、前記第２脚部における中心軸線方向の両端面のうち、前記取付け部材側と反対側の先端面が当接した突き当て部が形成されていることを特徴とする請求項１から３のいずれか１項に記載の防振装置。   The upper mounting portion is formed with an abutting portion in which a front end surface opposite to the mounting member side among the both end surfaces in the central axis direction of the second leg portion is in contact. Item 4. The vibration isolator according to any one of Items 1 to 3. 前記上方取付け部には、前記第２脚部における中心軸線方向の両端面のうち、前記取付け部材側と反対側の先端面が当接した突き当て部が形成され、
前記連結部、前記抜け止め部、および前記突き当て部は、表裏面が互いに平行な板状に形成されていることを特徴とする請求項３に記載の防振装置。 The upper mounting portion is formed with an abutting portion with which the front end surface on the opposite side to the mounting member side of the second leg portion in the central axial direction is in contact,
The vibration isolator according to claim 3, wherein the connecting portion, the retaining portion, and the abutting portion are formed in a plate shape whose front and back surfaces are parallel to each other.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54108883U (en) * 1978-01-19 1979-07-31
JP2011214608A (en) * 2010-03-31 2011-10-27 Bridgestone Corp Vibration isolation device
JP2012202418A (en) * 2011-03-23 2012-10-22 Tokai Rubber Ind Ltd Engine mount

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54108883U (en) * 1978-01-19 1979-07-31
JP2011214608A (en) * 2010-03-31 2011-10-27 Bridgestone Corp Vibration isolation device
JP2012202418A (en) * 2011-03-23 2012-10-22 Tokai Rubber Ind Ltd Engine mount

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