JP7442205B2 - shock absorption damper - Google Patents

shock absorption damper Download PDF

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JP7442205B2
JP7442205B2 JP2021208373A JP2021208373A JP7442205B2 JP 7442205 B2 JP7442205 B2 JP 7442205B2 JP 2021208373 A JP2021208373 A JP 2021208373A JP 2021208373 A JP2021208373 A JP 2021208373A JP 7442205 B2 JP7442205 B2 JP 7442205B2
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piston
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JP2023093006A (en
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和夫 南
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株式会社サムエンジニアリング
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Description

本発明は、衝撃吸収ダンパに関するものである。 The present invention relates to a shock absorbing damper.

従来、運動している対象物を衝突させて、その衝撃力を吸収して静止させるものとして様々なものが知られている。
例えば、対象物が自動車の場合には、タンクに水を充填した車両用バリケードがある。また鉄道の場合には、枕木やバラストを線路上に積む、鋼材を櫓型に組む、レールを上方にU字状に曲げる等の構造がある。
Conventionally, various types of devices have been known that cause a moving object to collide with each other and absorb the impact force to make it stand still.
For example, if the object is a car, there is a barricade for the vehicle whose tank is filled with water. In the case of railways, there are structures such as stacking sleepers and ballast on the tracks, assembling steel materials into a tower shape, and bending the rails upward into a U-shape.

対象物がこれらの衝撃吸収構造に衝突した際、瞬間的に大きな衝撃力が作用する。上述した衝撃吸収構造はいずれも静止しているため、対象物に大きな反力が作用し、対象物が破損してしまうおそれがある。
また、流体や変形材等の衝撃吸収体を組み合わせて用いることも考えられるが、これらの場合も衝突時に対象物に作用する反力が大きく、一定以上の変形距離を取る必要もある。そして、弾性変形材の場合には、吸収した衝撃力に応じた反発力が生じてしまう。一方、塑性変形材の場合には、一度のみしか使用することができないという問題もある。
When an object collides with these shock absorbing structures, a large impact force is instantaneously applied. Since all of the above-mentioned shock absorbing structures are stationary, a large reaction force acts on the object, which may cause damage to the object.
It is also possible to use a shock absorber such as a fluid or a deformable material in combination, but in these cases as well, the reaction force acting on the object at the time of collision is large, and it is necessary to provide a deformation distance of a certain value or more. In the case of an elastically deformable material, a repulsive force is generated in accordance with the absorbed impact force. On the other hand, in the case of plastically deformable materials, there is a problem in that they can only be used once.

この他、油圧式ダンパが衝撃吸収用途で使用されているが、油圧式ダンパも衝突時の反力が大きく、また、メンテナンスが必要であり、内部のオイルが漏れ出した場合には環境が汚染されるおそれがある。 In addition, hydraulic dampers are used for shock absorption purposes, but hydraulic dampers also generate a large reaction force during a collision, require maintenance, and pollute the environment if the internal oil leaks out. There is a risk that

本発明は、大きな衝撃力を吸収することができ、環境が汚染されるおそれがない衝撃吸収ダンパを提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a shock absorbing damper that can absorb large impact forces and does not pose a risk of contaminating the environment.

上記目的を達成するためになされた本願の第1発明は、一端の底面を無孔に封止するとともに他端を開放し、内部に液体を収容可能であり、外周に複数の貫通孔を有する円筒状のシリンダと、前記シリンダに内挿可能な円柱状の頭部と、前記頭部より小径のプランジャと、からなるピストンと、を有し、前記プランジャの端部に衝突物が衝突してピストンがシリンダの開口端から封止端へ向けて摺動する際にシリンダ内の液体をシリンダ外へ押し出す液体の抵抗により衝突物の衝撃力を吸収する衝撃吸収ダンパであって、衝突物の衝突時にピストンが押し込まれてシリンダ外へ押し出される水の量が徐々に減るように、ピストンの押し込み方向に沿って貫通孔の面積が漸減し、前記貫通孔は雌ネジ状であり、
前記貫通孔に螺合して閉塞する雄ネジ状の栓ボルトを有することを特徴とする、衝撃吸収ダンパを提供する。
本願の第2発明は、一端の底面を無孔に封止するとともに他端を開放し、内部に液体を収容可能であり、外周に複数の貫通孔を有する円筒状のシリンダと、前記シリンダに内挿可能な円柱状の頭部と、前記頭部より小径のプランジャと、からなるピストンと、を有し、前記プランジャの端部に衝突物が衝突してピストンがシリンダの開口端から封止端へ向けて摺動する際にシリンダ内の液体をシリンダ外へ押し出す液体の抵抗により衝突物の衝撃力を吸収する衝撃吸収ダンパであって、衝突物の衝突時にピストンが押し込まれてシリンダ外へ押し出される液体の量が徐々に減るように、ピストンの押し込み方向に沿って貫通孔の面積が漸減し、前記貫通孔は前記シリンダの所定の長さ中に均等に設けることを特徴とする、衝撃吸収ダンパを提供する。
本願の第3発明は、一端の底面を無孔に封止するとともに他端を開放し、内部に液体を収容可能であり、外周に複数の貫通孔を有する円筒状のシリンダと、前記シリンダに内挿可能な円柱状の頭部と、前記頭部より小径のプランジャと、からなるピストンと、を有し、前記プランジャの端部に衝突物が衝突してピストンがシリンダの開口端から封止端へ向けて摺動する際にシリンダ内の液体をシリンダ外へ押し出す液体の抵抗により衝突物の衝撃力を吸収する衝撃吸収ダンパであって、衝突物の衝突時にピストンが押し込まれてシリンダ外へ押し出される液体の量が徐々に減るように、ピストンの押し込み方向に沿って貫通孔の面積が漸減し、前記貫通孔は前記シリンダの所定の長さ中に、前記シリンダの開放端側から封止端側にかけて個数を漸減して設けることを特徴とする、衝撃吸収ダンパを提供する。
本願の第発明は、第1発明乃至第3発明において、前記流体は水であることを特徴とする
願の第発明は、第1発明乃至第発明において、前記ピストンの頭部の外径は、前記頭部の外周面と前記シリンダの内周面との間に一定の間隔を有する径であることを特徴とする
願の第発明は、第1発明乃至第発明のいずれかにおいて、前記貫通孔は前記シリンダの所定の長さ中に、前記シリンダの開放端側から封止端側にかけて径を漸減して設けることを特徴とする。
本願の第発明は、第1発明乃至第発明のいずれかにおいて、前記プランジャは中空の円筒状であることを特徴とする。
本願の第発明は、第1発明乃至第発明のいずれかにおいて、前記流体を貯留可能な貯液槽を有し、前記シリンダの、少なくとも前記貫通孔を形成した部分は、前記貯液槽に内包することを特徴とする

The first invention of the present application, which was made to achieve the above object, has one end of the bottom surface sealed without holes, the other end open, capable of containing liquid, and having a plurality of through holes on the outer periphery. A piston includes a cylindrical cylinder, a cylindrical head that can be inserted into the cylinder, and a plunger having a smaller diameter than the head, and when an object collides with an end of the plunger, A shock absorbing damper that absorbs the impact force of a collision object by the resistance of the liquid that pushes the liquid inside the cylinder out of the cylinder when the piston slides from the open end of the cylinder toward the sealed end. The area of the through hole gradually decreases along the direction in which the piston is pushed so that the amount of water pushed out of the cylinder when the piston is pushed in is gradually reduced, and the through hole has a female thread shape;
A shock absorbing damper is provided, characterized in that it has a male threaded plug bolt that is screwed into and closes the through hole .
A second invention of the present application provides a cylindrical cylinder whose bottom surface at one end is sealed without holes and whose other end is open so that a liquid can be accommodated therein, and which has a plurality of through holes on the outer periphery; A piston includes an insertable cylindrical head and a plunger having a smaller diameter than the head, and when an object collides with the end of the plunger, the piston is sealed from the open end of the cylinder. This is a shock absorbing damper that absorbs the impact force of a colliding object through the resistance of the liquid that pushes the liquid inside the cylinder out of the cylinder when sliding toward the end. An impact impactor characterized in that the area of the through holes gradually decreases along the pushing direction of the piston so that the amount of liquid pushed out gradually decreases, and the through holes are provided evenly over a predetermined length of the cylinder. Provide an absorption damper.
A third invention of the present application provides a cylindrical cylinder whose bottom surface at one end is sealed without holes and whose other end is open so that a liquid can be accommodated therein, and which has a plurality of through holes on the outer periphery; A piston includes an insertable cylindrical head and a plunger having a smaller diameter than the head, and when an object collides with the end of the plunger, the piston is sealed from the open end of the cylinder. This is a shock absorbing damper that absorbs the impact force of a colliding object through the resistance of the liquid that pushes the liquid inside the cylinder out of the cylinder when sliding toward the end. The area of the through hole gradually decreases along the pushing direction of the piston so that the amount of liquid pushed out gradually decreases, and the through hole is sealed from the open end side of the cylinder during a predetermined length of the cylinder. To provide a shock absorbing damper characterized in that the number of shock absorbing dampers is gradually reduced toward the end side.
A fourth invention of the present application is characterized in that in the first to third inventions , the fluid is water .
A fifth invention of the present application is that in the first to fourth inventions, the outer diameter of the head of the piston is a diameter having a constant interval between the outer circumferential surface of the head and the inner circumferential surface of the cylinder. It is characterized by
A sixth invention of the present application is that in any one of the first to fifth inventions, the diameter of the through hole gradually decreases from the open end side to the sealed end side of the cylinder during a predetermined length of the cylinder. It is characterized by being provided with
A seventh invention of the present application is characterized in that, in any one of the first to sixth inventions, the plunger has a hollow cylindrical shape.
An eighth invention of the present application is any one of the first to seventh inventions, which has a liquid storage tank capable of storing the fluid, and at least a portion of the cylinder in which the through hole is formed is connected to the liquid storage tank. It is characterized by being included in .

本発明は、上記した課題を解決するための手段により、次のような効果の少なくとも一つを得ることができる。
(1)シリンダ内部の体が貫通孔から押し出されることにより、衝撃力を吸収する。
(2)ピストンが押し込まれる方向に沿って、開いた貫通孔の面積が漸減するため、衝突初期は体が多く押し出されることで大きく衝撃力を吸収し、ピストンが押し込まれるにつれて押し出される体が少なくしながら反発力を大きくして吸収することで、全工程を通して短いストロークで効率よく大きな衝撃力を吸収することができる。
(3)貫通孔は栓ボルトにより閉塞することで、貫通孔の数を増減することができ、衝撃吸収力を調整することができる。
(4)体として水を使用すれば、安全性が高く、漏れ出しても環境を汚染することがない。
(5)貫通孔を設けたシリンダに流体を収容し、ピストンを摺動させるのみの簡易な構成のため、使用場所や対象を問わず、メンテナンスフリーで使用することができる。
(6)密閉栓を用いることで貯液槽が不要となり、より様々な場所で使用することができる。
The present invention can obtain at least one of the following effects by means for solving the above problems.
(1) The liquid inside the cylinder is pushed out through the through hole, thereby absorbing the impact force.
(2) The area of the open through hole gradually decreases along the direction in which the piston is pushed in, so at the beginning of the collision, a large amount of liquid is pushed out and absorbs the impact force, and as the piston is pushed in, the liquid is pushed out. By increasing and absorbing the repulsive force while reducing the amount of impact, it is possible to efficiently absorb large impact forces with short strokes throughout the entire process.
(3) By closing the through holes with plug bolts, the number of through holes can be increased or decreased, and the shock absorption power can be adjusted.
(4) If water is used as the liquid , it is highly safe and will not pollute the environment even if it leaks.
(5) Since the structure is simple, just storing fluid in a cylinder provided with a through hole and sliding a piston, it can be used without maintenance regardless of the place or object of use.
(6) Using a sealing stopper eliminates the need for a liquid storage tank, allowing it to be used in more diverse locations.

本発明の衝撃吸収ダンパの斜視図A perspective view of a shock absorbing damper of the present invention 本発明の衝撃吸収ダンパの側面図Side view of the shock absorbing damper of the present invention 本発明の衝撃吸収ダンパの断面図Cross-sectional view of the shock absorbing damper of the present invention 本発明の衝撃吸収ダンパの使用状態の説明図(1)Explanatory diagram (1) of the usage state of the shock absorbing damper of the present invention 本発明の衝撃吸収ダンパの使用状態の説明図(2)Explanatory diagram (2) of the usage state of the shock absorbing damper of the present invention 本発明の衝撃吸収ダンパの使用状態の説明図(3)Explanatory diagram (3) of the usage state of the shock absorbing damper of the present invention その他の実施例に係る本発明の衝撃吸収ダンパにおけるシリンダの側面図(1)Side view (1) of a cylinder in a shock absorbing damper of the present invention according to another embodiment その他の実施例に係る本発明の衝撃吸収ダンパにおけるシリンダの側面図(2)Side view (2) of a cylinder in a shock absorbing damper of the present invention according to another embodiment その他の実施例に係る本発明の衝撃吸収ダンパの斜視図A perspective view of a shock absorbing damper according to another embodiment of the present invention

以下、図面を参照しながら本発明の実施の形態について説明する。 Embodiments of the present invention will be described below with reference to the drawings.

[実施例1]
<1>全体構成
本発明の衝撃吸収ダンパ1は、シリンダ2と、シリンダ2に挿入するピストン3を有する(図1、2)。
[Example 1]
<1> Overall configuration The shock absorbing damper 1 of the present invention includes a cylinder 2 and a piston 3 inserted into the cylinder 2 (FIGS. 1 and 2).

<1>シリンダ
シリンダ2は一端を封止するとともに他端を開放した円筒状の部材であり、シリンダ2の外周には複数の貫通孔21を設ける。本実施例においては、貫通孔21は均一の径であり、シリンダ2の所定の長さ中に均等に設ける。
貫通孔21は栓ボルト22により閉塞可能とする。本実施例においては貫通孔21を雌ネジ状とし、栓ボルト22を貫通孔21に螺合することにより貫通孔21を閉塞するが、栓ボルト22による閉塞の形態はこれに限定されない。
シリンダ2の閉塞端の内面には、ピストン3の頭部31が衝突して破損しないように内部緩衝ゴム23を設ける(図3)。
<1> Cylinder The cylinder 2 is a cylindrical member with one end sealed and the other end open, and a plurality of through holes 21 are provided on the outer periphery of the cylinder 2. In this embodiment, the through holes 21 have a uniform diameter and are provided evenly over a predetermined length of the cylinder 2.
The through hole 21 can be closed with a plug bolt 22. In this embodiment, the through hole 21 is made into a female screw shape, and the through hole 21 is closed by screwing the plug bolt 22 into the through hole 21, but the form of closing by the plug bolt 22 is not limited to this.
An internal cushioning rubber 23 is provided on the inner surface of the closed end of the cylinder 2 to prevent the head 31 of the piston 3 from colliding and being damaged (FIG. 3).

<1.1>栓ボルトの本数
栓ボルト22は、長さ方向に均等に設けた貫通孔21に対して、シリンダ2の開放端側から封止端側にかけて本数が多くなるように設ける。
<1.1> Number of plug bolts The plug bolts 22 are provided so that the number of plug bolts 22 increases from the open end side to the sealed end side of the cylinder 2 with respect to the through holes 21 provided evenly in the length direction.

<2>ピストン
ピストン3はシリンダ2の開放端側から挿入し、シリンダ2の軸方向に摺動可能な部材であり、シリンダ2の内径よりも小径の略円柱状の頭部31と、頭部31より小径の円筒状のプランジャ32と、からなる。
頭部31の外周面とシリンダ2の内周面との間には、シリンダ2内部の流体に異物が混入してもピストン3の摺動に影響がないように、シール材等を設けず一定の間隔を確保する。
ピストン3のシリンダ2と逆側の端部は、衝突時に対象物が破損しないように外部緩衝ゴム33を設ける。
プランジャ32はより軽量となるように、内部を中空とする。
また、ピストン3の摺動方向の両側面にローラ34を設け、同じくピストン3の摺動方向の両側に平行に設けたレール35上に載置する。ローラ34がレール35上を移動することで、ピストン3をシリンダ2の軸方向に摺動することができる。
<2> Piston The piston 3 is a member that is inserted from the open end side of the cylinder 2 and is slidable in the axial direction of the cylinder 2. 31, and a cylindrical plunger 32 having a diameter smaller than that of the plunger 31.
There is no sealing material between the outer circumferential surface of the head 31 and the inner circumferential surface of the cylinder 2 so that the sliding movement of the piston 3 will not be affected even if foreign matter gets mixed into the fluid inside the cylinder 2. Ensure the following distance.
An external cushioning rubber 33 is provided at the end of the piston 3 on the opposite side from the cylinder 2 so that the object is not damaged in the event of a collision.
The plunger 32 is hollow inside so that it is more lightweight.
Further, rollers 34 are provided on both sides of the piston 3 in the sliding direction, and the rollers 34 are placed on rails 35 that are also provided parallel to both sides of the piston 3 in the sliding direction. By moving the rollers 34 on the rails 35, the piston 3 can be slid in the axial direction of the cylinder 2.

<3>貯液槽およびシリンダとピストンの配置
シリンダ2内には流体Fを満たす必要がある。
このため、流体Fを貯留する貯液槽4を使用し、シリンダ2を貯液槽4に貯留した流体F中に沈めることにより、シリンダ2の内部に流体Fが満たされる(図3)。貯液槽は、シリンダ2の、少なくとも貫通孔21を設けた部分を内包する大きさとする。
ピストン3は外部緩衝ゴム33を設けた端部側が貯液槽4から突設するように配置する。ピストン3と貯液槽4との隙間はゴム等のシール材(図示しない)を設けて、水が漏れ出さないようにする。
流体Fとしては、水の他、粘性流体を用いることができる。水であれば安全性が高く、漏れ出しても環境を汚染することがない。
<3> Arrangement of liquid storage tank, cylinder, and piston The cylinder 2 must be filled with fluid F.
Therefore, by using the liquid storage tank 4 that stores the fluid F and submerging the cylinder 2 into the fluid F stored in the liquid storage tank 4, the inside of the cylinder 2 is filled with the fluid F (FIG. 3). The liquid storage tank is sized to enclose at least the portion of the cylinder 2 in which the through hole 21 is provided.
The piston 3 is arranged so that the end side provided with the external buffer rubber 33 protrudes from the liquid storage tank 4. A sealing material (not shown) such as rubber is provided in the gap between the piston 3 and the liquid storage tank 4 to prevent water from leaking out.
As the fluid F, other than water, a viscous fluid can be used. Water is highly safe and will not pollute the environment even if it leaks.

<4>衝撃の吸収
対象物がピストン3に衝突し、衝撃力がピストン3に作用すると、ピストン3が押され、貯液槽4内のシリンダ2に挿入される(図4)。
シリンダ2内をピストン3が動く際には、流体Fによる抵抗が生じる。これにより衝撃力が吸収される。また、ピストン3のプランジャ32を中空として軽量にすることで、対象物がピストン3に衝突した際に、対象物へ作用する反発力が小さくなる。
衝撃力は、ピストン3の動きに合わせてシリンダ2内部の流体Fに伝達される。
シリンダ2は外周に貫通孔21を有し、シリンダ2内部の流体Fは貫通孔21からシリンダ2の外に押し出されることとなる。このときのシリンダ2の外側の貯液槽4内の水の抵抗や、貫通孔21通過時の圧力損失等により、衝撃力が吸収される。
ピストン3の頭部31の外周面とシリンダ2の内周面との間に一定の間隔を設けることで、シリンダ2内部の流体Fに砂や石等の異物が混入してもピストン3の摺動に影響がない。
<4> Absorption of Impact When an object collides with the piston 3 and an impact force acts on the piston 3, the piston 3 is pushed and inserted into the cylinder 2 in the liquid storage tank 4 (FIG. 4).
When the piston 3 moves within the cylinder 2, resistance is generated by the fluid F. This absorbs impact forces. Further, by making the plunger 32 of the piston 3 hollow and lightweight, the repulsive force acting on the object when the object collides with the piston 3 is reduced.
The impact force is transmitted to the fluid F inside the cylinder 2 in accordance with the movement of the piston 3.
The cylinder 2 has a through hole 21 on its outer periphery, and the fluid F inside the cylinder 2 is forced out of the cylinder 2 through the through hole 21. At this time, the impact force is absorbed by the resistance of the water in the liquid storage tank 4 outside the cylinder 2, the pressure loss when passing through the through hole 21, and the like.
By providing a certain distance between the outer circumferential surface of the head 31 of the piston 3 and the inner circumferential surface of the cylinder 2, even if foreign matter such as sand or stones gets mixed into the fluid F inside the cylinder 2, the sliding of the piston 3 is prevented. No effect on movement.

シリンダ2の貫通孔21は栓ボルト22により閉塞することができる。
栓ボルト22は、長さ方向に均等に設けた貫通孔21に対して、シリンダ2の開放端側から封止端側にかけて本数が多くなるように設けることで、ピストン3が押し込まれる方向に沿って、開いた貫通孔21の面積が漸減する。
衝突初期はピストン3の位置に対して多くの貫通孔21が開いており、衝撃力によりシリンダ2の内部から外部に流体Fが多く押し出され、対象物へ作用する反発力を小さくおさえつつ、大きく衝撃力を吸収する。
その後、ピストン3が押し込まれるにつれて(図5)、栓ボルト22が多くなり、開いた貫通孔21が少なくなるため、シリンダ2の内部から外部に押し出される流体Fが徐々に少なくなり、流体Fの抵抗で衝撃力を受けるため、反発力の割合が大きくなる。
このように、初期は反発力をおさえて大きく衝撃力を吸収し、徐々に反発力を大きくして小さく衝撃力を吸収することで、全工程を通して短いストロークで効率よく大きな衝撃力を吸収することができる。
The through hole 21 of the cylinder 2 can be closed with a plug bolt 22.
The plug bolts 22 are provided so that the number of plug bolts 22 increases from the open end side to the sealed end side of the cylinder 2 with respect to the through holes 21 provided evenly in the length direction. As a result, the area of the open through hole 21 gradually decreases.
At the initial stage of the collision, many through holes 21 are open relative to the position of the piston 3, and a large amount of fluid F is pushed out from the inside of the cylinder 2 to the outside due to the impact force. Absorb impact force.
After that, as the piston 3 is pushed in (Fig. 5), the number of plug bolts 22 increases and the number of open through holes 21 decreases, so the fluid F pushed out from the inside of the cylinder 2 to the outside gradually decreases, and the amount of fluid F Since the impact force is received by resistance, the proportion of repulsive force increases.
In this way, by suppressing the repulsion force at the beginning and absorbing a large impact force, and gradually increasing the repulsion force and absorbing a small impact force, it is possible to efficiently absorb a large impact force with a short stroke throughout the entire process. I can do it.

<5>衝撃吸収力の調整
一部の貫通孔21を栓ボルト22で閉塞することにより、衝撃力が加わったときにシリンダ2の内部から貫通孔21を通じて外部に押し出される流体Fの量を調整できる。例えば、閉塞する貫通孔21を増やすことにより、外部に押し出される流体Fの量が減り、対象物に作用する反発力は大きくなる。貫通孔21は衝撃吸収ダンパ1の衝撃吸収能力は小さくなる。
貫通孔21は、シリンダ2の長さ方向に均等に設けるため、栓ボルト22を用いて選択的に貫通孔21を閉塞することで衝撃吸収力を任意に調整できる。
<5> Adjustment of shock absorption power By closing some of the through holes 21 with plug bolts 22, the amount of fluid F pushed out from the inside of the cylinder 2 through the through holes 21 when an impact force is applied is adjusted. can. For example, by increasing the number of through holes 21 to be closed, the amount of fluid F pushed out to the outside is reduced, and the repulsive force acting on the object is increased. The through hole 21 reduces the impact absorption capacity of the impact absorbing damper 1.
Since the through holes 21 are provided evenly in the length direction of the cylinder 2, the impact absorption force can be adjusted as desired by selectively closing the through holes 21 using the plug bolts 22.

本発明の衝撃吸収ダンパ1は、外周に複数の貫通孔21を設けたシリンダ2に流体Fを収容し、ピストン3を摺動させるのみであり、簡易な構成である。また、ピストン3の頭部31の外周面とシリンダ2の内周面との間に一定の間隔を設けることで、シリンダ2内部の流体Fに砂や石等の異物が混入してもピストン3の摺動に影響がない。
このため、使用場所や対象を問わず、衝撃吸収が必要な様々な場所で、メンテナンスフリーで使用することができる。また、ピストン3を摺動して元の配置に戻すのみで、何度でも使用可能である。
そして、衝撃吸収ダンパ1を並列に配置し、ピストン3の後端に設けた受撃体36を介して連結することもできる(図6)。対象物や作用する衝撃力に合わせて、衝撃吸収ダンパ1の本数を増減できる。
The shock absorbing damper 1 of the present invention has a simple structure, in that the cylinder 2 having a plurality of through holes 21 on its outer periphery accommodates the fluid F and only slides the piston 3 thereon. Furthermore, by providing a certain distance between the outer circumferential surface of the head 31 of the piston 3 and the inner circumferential surface of the cylinder 2, even if foreign matter such as sand or stones gets mixed into the fluid F inside the cylinder 2, the piston 3 There is no effect on the sliding movement.
Therefore, it can be used maintenance-free in various places where shock absorption is required, regardless of where it is used or what it is used for. Further, it can be used any number of times by simply sliding the piston 3 back to its original position.
It is also possible to arrange the shock absorbing dampers 1 in parallel and to connect them via a receiver 36 provided at the rear end of the piston 3 (FIG. 6). The number of shock absorbing dampers 1 can be increased or decreased depending on the object and the impact force acting on it.

[その他の実施例]
<1>貫通孔の寸法や配置
上述の実施例1においては、貫通孔21をシリンダ2の長さ方向に均等に設け、栓ボルト22をシリンダ2の開放端側から封止端側にかけて本数が多くなるように設けることで、ピストン3が押し込まれる方向に沿って、開いた貫通孔21の面積を漸減したが、この形態に限定されず、例えば貫通孔21の個数をシリンダ2の開放端側から封止端側にかけて漸減したり(図7)、貫通孔21の径をシリンダ2の開放端側から封止端側にかけて小さくしたりすることにより(図8)、栓ボルト22の有無に関わらず、開いた貫通孔21の面積を漸減してもよい。
[Other Examples]
<1> Dimensions and arrangement of through holes In the first embodiment described above, the through holes 21 are provided evenly in the length direction of the cylinder 2, and the number of plug bolts 22 is increased from the open end side to the sealed end side of the cylinder 2. By providing a larger number of through holes 21, the area of the open through holes 21 is gradually reduced along the direction in which the piston 3 is pushed. However, the present invention is not limited to this form. By gradually decreasing the diameter of the through hole 21 from the open end of the cylinder 2 to the sealed end (Fig. 8), the diameter of the through hole 21 can be reduced regardless of the presence or absence of the plug bolt 22. First, the area of the open through hole 21 may be gradually reduced.

<2>密閉栓の使用
また、上述の実施例1においては、貯液槽4内の流体F中にシリンダ2を沈めたが、貫通孔21を密閉栓5で封止しシリンダ2内部に流体Fを充填して構成してもよい。密閉栓5はゴム等からなり、内部の流体Fに衝撃力が作用した時に圧力により貫通孔21から押し出されるため、内部の流体Fが貫通孔21から外部に押し出され、衝撃吸収ダンパ1としての衝撃吸収能力が発揮される。
貯液槽4が不要となるため、より様々な場所で使用することができる(図9)。
<2> Use of sealing plug In the above-mentioned Example 1, the cylinder 2 was submerged in the fluid F in the liquid storage tank 4, but the through hole 21 was sealed with the sealing plug 5 and the fluid It may be configured by filling with F. The sealing plug 5 is made of rubber or the like, and is pushed out of the through hole 21 by pressure when an impact force is applied to the fluid F inside. Demonstrates shock absorption ability.
Since the liquid storage tank 4 is not required, it can be used in more various places (FIG. 9).

1…衝撃吸収ダンパ
2…シリンダ、21…貫通孔、22…栓ボルト、23…内部緩衝ゴム
3…ピストン、31…頭部、32…プランジャ、33…外部緩衝ゴム、34…ローラ、35…レール、36…受撃体
4…貯液槽
5…密閉栓
1... Shock absorption damper 2... Cylinder, 21... Through hole, 22... Plug bolt, 23... Internal buffer rubber 3... Piston, 31... Head, 32... Plunger, 33... External buffer rubber, 34... Roller, 35... Rail , 36...Receiver 4...Liquid storage tank 5...Sealing plug

Claims (8)

一端の底面を無孔に封止するとともに他端を開放し、内部に液体を収容可能であり、外周に複数の貫通孔を有する円筒状のシリンダと、
前記シリンダに内挿可能な円柱状の頭部と、前記頭部より小径のプランジャと、からなるピストンと、を有し、
前記プランジャの端部に衝突物が衝突してピストンがシリンダの開口端から封止端へ向けて摺動する際にシリンダ内の液体をシリンダ外へ押し出す液体の抵抗により衝突物の衝撃力を吸収する衝撃吸収ダンパであって、
衝突物の衝突時にピストンが押し込まれてシリンダ外へ押し出される液体の量が徐々に減るように、ピストンの押し込み方向に沿って貫通孔の面積が漸減し、
前記貫通孔は雌ネジ状であり、
前記貫通孔に螺合して閉塞する雄ネジ状の栓ボルトを有することを特徴とする、
衝撃吸収ダンパ。
A cylindrical cylinder whose bottom surface at one end is sealed to be imperforate and the other end is open so that a liquid can be accommodated therein, and which has a plurality of through holes on the outer periphery;
a piston comprising a cylindrical head that can be inserted into the cylinder and a plunger having a smaller diameter than the head;
When a colliding object collides with the end of the plunger and the piston slides from the open end of the cylinder toward the sealed end, the liquid in the cylinder is pushed out of the cylinder.The impact force of the colliding object is absorbed by the resistance of the liquid. A shock absorbing damper,
The area of the through hole gradually decreases along the direction in which the piston is pushed so that the amount of liquid pushed out of the cylinder when the piston is pushed in when an object collides with it is gradually reduced.
The through hole has a female thread shape,
characterized by having an externally threaded plug bolt that screws into and closes the through hole ;
Shock absorption damper.
一端の底面を無孔に封止するとともに他端を開放し、内部に液体を収容可能であり、外周に複数の貫通孔を有する円筒状のシリンダと、 A cylindrical cylinder whose bottom surface at one end is sealed to be imperforate and the other end is open so that a liquid can be stored therein, and which has a plurality of through holes on its outer periphery;
前記シリンダに内挿可能な円柱状の頭部と、前記頭部より小径のプランジャと、からなるピストンと、を有し、 a piston comprising a cylindrical head that can be inserted into the cylinder and a plunger having a smaller diameter than the head;
前記プランジャの端部に衝突物が衝突してピストンがシリンダの開口端から封止端へ向けて摺動する際にシリンダ内の液体をシリンダ外へ押し出す液体の抵抗により衝突物の衝撃力を吸収する衝撃吸収ダンパであって、 When a colliding object collides with the end of the plunger and the piston slides from the open end of the cylinder toward the sealed end, the liquid in the cylinder is pushed out of the cylinder.The impact force of the colliding object is absorbed by the resistance of the liquid. A shock absorbing damper,
衝突物の衝突時にピストンが押し込まれてシリンダ外へ押し出される液体の量が徐々に減るように、ピストンの押し込み方向に沿って貫通孔の面積が漸減し、 The area of the through hole gradually decreases along the direction in which the piston is pushed so that the amount of liquid pushed out of the cylinder when the piston is pushed in when an object collides with it is gradually reduced.
前記貫通孔は前記シリンダの所定の長さ中に均等に設けることを特徴とする、 The through holes are provided evenly throughout a predetermined length of the cylinder,
衝撃吸収ダンパ。 Shock absorption damper.
一端の底面を無孔に封止するとともに他端を開放し、内部に液体を収容可能であり、外周に複数の貫通孔を有する円筒状のシリンダと、A cylindrical cylinder whose bottom surface at one end is sealed to be imperforate and the other end is open so that a liquid can be stored therein, and which has a plurality of through holes on its outer periphery;
前記シリンダに内挿可能な円柱状の頭部と、前記頭部より小径のプランジャと、からなるピストンと、を有し、 a piston comprising a cylindrical head that can be inserted into the cylinder and a plunger having a smaller diameter than the head;
前記プランジャの端部に衝突物が衝突してピストンがシリンダの開口端から封止端へ向けて摺動する際にシリンダ内の液体をシリンダ外へ押し出す液体の抵抗により衝突物の衝撃力を吸収する衝撃吸収ダンパであって、 When a colliding object collides with the end of the plunger and the piston slides from the open end of the cylinder toward the sealed end, the liquid in the cylinder is pushed out of the cylinder.The impact force of the colliding object is absorbed by the resistance of the liquid. A shock absorbing damper,
衝突物の衝突時にピストンが押し込まれてシリンダ外へ押し出される液体の量が徐々に減るように、ピストンの押し込み方向に沿って貫通孔の面積が漸減し、 The area of the through hole gradually decreases along the direction in which the piston is pushed so that the amount of liquid pushed out of the cylinder when the piston is pushed in when an object collides with it is gradually reduced.
前記貫通孔は前記シリンダの所定の長さ中に、前記シリンダの開放端側から封止端側にかけて個数を漸減して設けることを特徴とする、 The through holes are provided in a predetermined length of the cylinder, the number of which gradually decreases from the open end side to the sealed end side of the cylinder,
衝撃吸収ダンパ。 Shock absorption damper.
前記液体は水であることを特徴とする、
請求項1乃至3に記載の衝撃吸収ダンパ。
The liquid is water,
A shock absorbing damper according to any one of claims 1 to 3 .
前記ピストンの頭部の外径は、前記頭部の外周面と前記シリンダの内周面との間に一定の間隔を有する径であることを特徴とする、
請求項1乃至のいずれか一項に記載の衝撃吸収ダンパ。
The outer diameter of the head of the piston is characterized in that there is a constant distance between the outer circumferential surface of the head and the inner circumferential surface of the cylinder.
The shock absorbing damper according to any one of claims 1 to 4 .
前記貫通孔は前記シリンダの所定の長さ中に、前記シリンダの開放端側から封止端側にかけて径を漸減して設けることを特徴とする、
請求項1乃至のいずれか一項に記載の衝撃吸収ダンパ。
The through hole is provided in a predetermined length of the cylinder with a diameter gradually decreasing from the open end side to the sealed end side of the cylinder,
The shock absorbing damper according to any one of claims 1 to 5 .
前記プランジャは中空の円筒状であることを特徴とする、
請求項1乃至のいずれか一項に記載の衝撃吸収ダンパ。
The plunger is characterized in that it has a hollow cylindrical shape.
The shock absorbing damper according to any one of claims 1 to 6 .
前記流体を貯留可能な貯液槽を有し、
前記シリンダの、少なくとも前記貫通孔を形成した部分は、前記貯液槽に内包することを特徴とする、
請求項1乃至のいずれか一項に記載の衝撃吸収ダンパ。
having a liquid storage tank capable of storing the fluid;
At least a portion of the cylinder in which the through hole is formed is enclosed in the liquid storage tank,
The shock absorbing damper according to any one of claims 1 to 7 .
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010025150A (en) 2008-07-15 2010-02-04 Honda Motor Co Ltd Damper device
JP2012141056A (en) 2010-12-15 2012-07-26 Ryuji Tsutsumi Shock absorber
CN213655288U (en) 2020-08-31 2021-07-09 天水天力特种管有限公司 Hydraulic buffer mechanism for baffle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010025150A (en) 2008-07-15 2010-02-04 Honda Motor Co Ltd Damper device
JP2012141056A (en) 2010-12-15 2012-07-26 Ryuji Tsutsumi Shock absorber
CN213655288U (en) 2020-08-31 2021-07-09 天水天力特种管有限公司 Hydraulic buffer mechanism for baffle

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