JP2017180532A5

JP2017180532A5 -

Info

Publication number: JP2017180532A5
Application number: JP2016064370A
Authority: JP
Filing date: 2016-03-28
Publication date: 2019-07-18
Anticipated expiration: 2036-03-28

Description

本発明によれば、
制振対象物への振動伝達を緩衝する緩衝装置であって、
他の部位よりも局所的に一方向に弾性変形しやすい複数の弾性変形部を有する筒形の撓みばね部材によって外側部材及び内側部材の間を連結し、前記外側部材及び前記内側部材の間で伝達される振動を減衰することを特徴とする緩衝装置が提供される。 According to the invention
A shock absorber for buffering vibration transmission to a vibration control target,
And connecting the outer member and the inner member by the deflection spring member cylindrical having a plurality of elastically deformable portion which tends to locally elastically deformed in one direction than the other portions, between the front Kisotogawa member and the inner member A shock absorber is provided which is characterized in that it damps vibrations transmitted at

また、本実施形態の撓みばね部材１３には、更に、貫通孔１３ｆとは別に、小径の貫通孔１３ｇを形成し、貫通孔１３ｆと、小径の貫通孔１３ｇとがスリット１３ｅによって結ぶように接続されており、このスリット１３ｅは直線形をなしている。このスリット１３ｅは、弾性ヒンジ１３ａを形成する貫通孔１３ｆ同士を連結するスリットではなく、貫通孔１３ｆからそれぞれ独立して設けられた直線状のスリットとなる。このように、弾性ヒンジ１３ａに加えてこのようなスリット１３ｅ、貫通孔１３ｇの形成により、撓みばね部材１３のＺ方向における弾性変形が更に促進されるだけでなく、撓みばね部材１３のＺ方向のバネ定数をより精密に調整することができる。なお、このようなスリット１３ｅ又は貫通孔１３ｇは、要求される固有振動数等によっては形成しなくてもよい。 Further, in the bending spring member 13 of the present embodiment, a through hole 13g of a small diameter is formed separately from the through hole 13f, and the through hole 13f and the through hole 13g of a small diameter are connected by a slit 13e. The slit 13e is straight. The slit 13e is not a slit connecting the through-hole 13f with each other to form a resilient hinge 13 a, a linear slit provided independently from the through hole 13f. Thus, in addition to the elastic hinge 13a, the formation of the slits 13e and the through holes 13g not only further promotes the elastic deformation of the bending spring member 13 in the Z direction, but also the bending spring member 13 in the Z direction. The spring constant can be adjusted more precisely. Note that such slits 13e or the through holes 13g may not be formed depending on the required natural frequency or the like.

また、本実施形態の緩衝装置１０の構成は、筒状の撓みばね部材１３の周壁に弾性ヒンジ１３ａ等を設けたことにより、撓みばね部材１３に関して、減衰を得たい軸（Ｚ方向）に対して柔軟性を持たせつつＺ方向と直交する軸（Ｘ／Ｙ）の剛性を高くできるという特徴を有する。ここで、撓みばね部材１３のＺ方向の柔軟性は、例えば、貫通孔１３ｆの径寸法が決まれば、弾性ヒンジ１３ａのＺ方向の厚みｔと、撓みばね部材１３の径方向の幅ｂとで実質的に決まり、撓みばね部材１３の径方向Ｘ、Ｙについて必要な剛性を確保するためには、例えば、撓みばね部材１３の径方向の幅ｂにより適宜調整が可能である。より詳細に説明すると、緩衝装置１０の構成上の特徴として、撓みばね部材１３への緩衝部材１７の装着の仕方と、弾性ヒンジ１３ａの幅ｂ、あるいは貫通孔１３ｆの径寸法、そして弾性ヒンジ１３ａの厚みｔで所望の固有振動数を設定でき、これらの構成を適宜調整することにより自由に振動減衰特性を調整できる。 Further, the configuration of the shock absorber 10 according to the present embodiment is such that the elastic hinge 13a etc. is provided on the peripheral wall of the cylindrical bending spring member 13 with respect to the axis (Z direction) to obtain damping for the bending spring member 13. It is characterized in that the rigidity of the axis (X / Y) orthogonal to the Z direction can be increased while providing flexibility. Here, the flexibility of the bending spring member 13 in the Z direction is determined, for example, by the thickness t of the elastic hinge 13a in the Z direction and the width b of the bending spring member 13 in the radial direction if the diameter of the through hole 13f is determined. In order to ensure the required rigidity in the radial directions X and Y of the bending spring member 13, for example, the width b of the bending spring member 13 can be appropriately adjusted, for example, in accordance with the radial width b of the bending spring member 13. More specifically, as a structural feature of the shock absorber 10, how to mount the shock absorbing member 17 on the bending spring member 13, the width b of the elastic hinge 13a, the diameter of the through hole 13f, and the elastic hinge 13a The desired natural frequency can be set by the thickness t of t, and the vibration damping characteristics can be freely adjusted by appropriately adjusting these configurations.

衛星搭載機器の緩衝装置としては、一般に、
イ個々の搭載品に対して寸法が嵩張らずFitするものであること。
ロ減衰が望まれる軸に関しては150Hz以下の固有値で減衰比が0.1以上であること。
ハ特に光学系では減衰が望まれる軸と直交方向に関しては剛であること。
ニヒステレシスがないこと、
が要求される。 In general, as a shock absorber for satellite equipment,
B. It should be fit without being bulky in size for each mounted product.
(B) Attenuation ratio of 0.1 or more at an eigenvalue of 150 Hz or less for an axis where attenuation is desired.
Ha particularly respect to axis Cartesian direction damping is desired an optical system is rigid.
Lack of hysteresis,
Is required.

Claims

A shock absorber for buffering vibration transmission to a vibration control target,
And connecting the outer member and the inner member by the deflection spring member cylindrical having a plurality of elastically deformable portion which tends to locally elastically deformed in one direction than the other portions, between the front Kisotogawa member and the inner member A shock absorber characterized in that it damps vibrations transmitted thereto.

The shock absorber according to claim 1, wherein the deflection spring member, the outer member, and the inner member have a cylindrical shape.

The bending spring member and the outer member are connected at one end of the bending spring member in the axial direction of the bending spring member, and the bending spring member and the inner member are the bending spring member in the axial direction. The shock absorber according to claim 2, characterized in that it is connected at the other end of the.

Shock absorber according to have arranged the buffer member in the gap from claim 1, wherein in any one of 3 between before and Kisotogawa member and the inner member.

The shock absorbing device according to claim 4, wherein a plurality of the shock absorbing members are disposed in the circumferential direction of the bending spring member.

The shock absorbing device according to claim 5, wherein the shock absorbing member has a band shape and is fixed to at least one of an outer peripheral surface and an inner peripheral surface of the bending spring member.

The shock absorbing device according to claim 5, wherein the shock absorbing member is disposed at least between the inner member and the bending spring member.

The shock absorber according to claim 4 , wherein the shock absorber is a visco-elastic body.

The elastic deformation portion is formed by a set of two circular through holes which are adjacent to each other in the axial direction of the bending spring member and formed through a peripheral wall of the bending spring member. The shock absorber as described in.

The shock absorber according to claim 9, wherein a slit extending along a circumferential direction of the peripheral wall is connected to the circular through hole.

The slit has a crank-shaped slit connecting adjacent circular through holes, and a linear slit independently provided from the circular through holes without connecting the adjacent circular through holes. The shock absorber according to claim 10.