JPH06200969A - Shock absorber - Google Patents

Shock absorber

Info

Publication number
JPH06200969A
JPH06200969A JP35880792A JP35880792A JPH06200969A JP H06200969 A JPH06200969 A JP H06200969A JP 35880792 A JP35880792 A JP 35880792A JP 35880792 A JP35880792 A JP 35880792A JP H06200969 A JPH06200969 A JP H06200969A
Authority
JP
Japan
Prior art keywords
elastic member
shock absorber
moving body
closed space
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP35880792A
Other languages
Japanese (ja)
Inventor
Tadao Totsuka
忠男 戸塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP35880792A priority Critical patent/JPH06200969A/en
Publication of JPH06200969A publication Critical patent/JPH06200969A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a shock absorber of which a shock can be surely absorbed, the number of parts is small, the construction is extremely simple, and the cost is reduced. CONSTITUTION:An elastic member 22 is received in the receiving recessed part 23 of a holding member 21. The elastic member 22 is brought in close contact with the inner circumferential face of the receiving recessed part 23 so as to form a closed space 24, a part of the elastic member is projected outside the receiving recessed part 23, and when the projected part is brought in contact with a moving body 2 and compressed, the air in the closed space 24 is compressed. Hereby, kinetic energy of the moving body 2 is absorbed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は機械的衝撃を吸収緩和す
る緩衝装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorber for absorbing and absorbing mechanical shock.

【0002】[0002]

【従来の技術】一般にこの種の緩衝装置は、スプリン
グ、ゴム等の弾性部材、空気圧、油圧などを利用して機
械的衝撃を吸収し、装置自体、機構あるいは部品の破損
防止、作業の安全性等を図っている。
2. Description of the Related Art Generally, a shock absorber of this type utilizes a spring, an elastic member such as rubber, air pressure, hydraulic pressure or the like to absorb a mechanical shock, prevent damage to the device itself, a mechanism or parts, and ensure work safety. Etc.

【0003】図7は精密加工機に用いられている緩衝装
置の従来例を示すもので、1は駆動モータ、2はカップ
リング3を介して駆動モータ1の出力軸1aに連結され
た精密送りねじ、4は精密送りねじ2の回転によって移
動される被加工物または可動ベッドからなる移動体、5
は移動体4の図7右方への移動を規制し衝撃を吸収緩和
する緩衝装置である。衝撃装置5は、移動体4の当接に
伴いシリンダ6の一方に室内に封入されている油等の非
圧縮流体7およびスプリング8がピストン9の移動によ
って圧縮され、非圧縮流体7の一部が配管10および逆
止弁11を通ってシリンダ6の他方の室内に流入するこ
とで、移動体4の運動エネルギを吸収する。
FIG. 7 shows a conventional example of a shock absorber used in a precision processing machine. 1 is a drive motor, 2 is a precision feed which is connected to an output shaft 1a of the drive motor 1 through a coupling 3. Screws 4 are moving bodies composed of a work piece or a movable bed that is moved by rotation of the precision feed screw 2, 5
Is a shock absorber that regulates the movement of the moving body 4 to the right in FIG. In the impact device 5, the non-compressed fluid 7 such as oil enclosed in one of the cylinders 6 and the spring 8 are compressed by the movement of the piston 9 when the moving body 4 comes into contact, and part of the non-compressed fluid 7 is compressed. Flows into the other chamber of the cylinder 6 through the pipe 10 and the check valve 11 to absorb the kinetic energy of the moving body 4.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記し
た従来の緩衝装置5にあっては、シリンダ6、非圧縮流
体7、スプリング8、ピストン9、ロッド12等多くの
部品を必要とするため、構造が複雑で製造コストが高く
つくという問題があった。また、緩衝装置5を精密送り
ねじ2の軸線上に配置することができず、そのため、移
動体4がロッド12に当接した際、精密送りねじ2に曲
げ応力が生じるという問題もあった。
However, the above-described conventional shock absorber 5 requires many parts such as the cylinder 6, the non-compressed fluid 7, the spring 8, the piston 9 and the rod 12, and therefore has a structure. However, there is a problem that it is complicated and the manufacturing cost is high. Further, the shock absorber 5 cannot be arranged on the axis of the precision feed screw 2, and therefore, there is a problem that when the moving body 4 contacts the rod 12, bending stress is generated in the precision feed screw 2.

【0005】したがって、本発明は上記したような従来
の問題点に鑑みてなされたもので、その目的とするとこ
ろは、衝撃を確実に吸収することができ、また部品点数
が少なく構造がきわめて簡単でコスト低減を図ることが
できる緩衝装置を提供することにある。
Therefore, the present invention has been made in view of the above-mentioned conventional problems, and the purpose thereof is to be able to reliably absorb an impact and to have a very simple structure with a small number of parts. It is to provide a shock absorber capable of reducing the cost.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
本発明は、弾性部材の弾性変形により衝撃を吸収緩和す
る緩衝装置において、保持部材に収納凹部を設け、この
収納凹部内に前記弾性部材を、その一部を外部に突出さ
せた状態で、かつ周面の一部を凹部内面に密接させて収
納することにより収納凹部内に密閉空間を形成したもの
である。
In order to achieve the above object, the present invention is a shock absorbing device which absorbs and relaxes impact by elastic deformation of an elastic member, wherein a holding recess is provided in a holding member, and the elastic member is provided in the holding recess. And a part of the peripheral surface is housed in close contact with the inner surface of the recess to form a closed space in the housing recess.

【0007】[0007]

【作用】本発明において、弾性部材は移動体が当接する
と弾性変形し、密閉空間内の空気を圧縮する。これによ
り衝撃を吸収する。
In the present invention, the elastic member is elastically deformed when the moving body comes into contact therewith, and compresses the air in the closed space. This absorbs the shock.

【0008】[0008]

【実施例】以下、本発明を図面に示す実施例に基づいて
詳細に説明する。図1は本発明に係る緩衝装置の一実施
例を示す分解斜視図、図2は断面図、図3は移動体の当
接によって弾性部材が圧縮された状態を示す図である。
これらの図において、緩衝装置20は保持部材21と弾
性部材22とで構成されている。保持部材21は、合成
樹脂、金属等によって一端が開放する円筒状に形成され
ることにより、前記弾性部材22を収納する収納凹部2
3を有する。収納凹部23の深さは内径より小さい。弾
性部材22は、ゴム、合成樹脂等によって収納凹部23
の内径と略等しい大きさの球状体に形成され、収納凹部
23の内周面に密接している。このため、弾性部材22
と収納凹部23とで囲まれた空間は密閉空間24を形成
している。また、弾性部材22の一部周面は収納凹部2
3から外部に突出されており、この突出部22aに移動
体2が当接される。本実施例においては弾性部材22と
して中実球状体に形成したが、これに限らず中空球状体
であってもよい。また、弾性部材22の形状は球状体に
限らず、収納凹部23の形状に応じて種々の形状とする
ことが可能である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a shock absorber according to the present invention, FIG. 2 is a sectional view, and FIG. 3 is a view showing a state in which an elastic member is compressed by contact of a moving body.
In these figures, the shock absorber 20 is composed of a holding member 21 and an elastic member 22. The holding member 21 is formed of a synthetic resin, a metal, or the like into a cylindrical shape with one end open, so that the holding recess 2 for holding the elastic member 22 is formed.
Have three. The depth of the storage recess 23 is smaller than the inner diameter. The elastic member 22 is made of rubber, synthetic resin, etc.
It is formed into a spherical body having a size substantially equal to the inner diameter of, and is in close contact with the inner peripheral surface of the storage recess 23. Therefore, the elastic member 22
The space surrounded by the housing recess 23 forms a closed space 24. Further, a part of the peripheral surface of the elastic member 22 is provided with the storage recess 2
3 is projected to the outside, and the moving body 2 is brought into contact with the projecting portion 22a. In the present embodiment, the elastic member 22 is formed as a solid spherical body, but the elastic member 22 is not limited to this and may be a hollow spherical body. Further, the shape of the elastic member 22 is not limited to the spherical body, and can be various shapes according to the shape of the storage recess 23.

【0009】このような構成からなる緩衝装置20にお
いて、移動体2が弾性部材22の突出部周面に当接する
と、弾性部材22は図3に示すように圧縮されて収納凹
部23内に没入し、密閉空間24内の空気を圧縮する。
これによって移動体2の運動エネルギを吸収する。この
場合、弾性部材22と密閉空間24内の空気が共にダン
パーとして機能するため、単に弾性部材もしくは空気圧
のみを用いた緩衝装置に比べてより大きな運動エネルギ
を吸収することができる。移動体2が緩衝装置20から
離間すると、弾性部材22はそれ自身の材質的特性によ
り元の形状に弾性復帰し、密閉空間24内の空気は密閉
空間24が膨張することで元の圧力に戻る。
In the shock absorber 20 having such a structure, when the moving body 2 comes into contact with the peripheral surface of the projecting portion of the elastic member 22, the elastic member 22 is compressed as shown in FIG. Then, the air in the closed space 24 is compressed.
This absorbs the kinetic energy of the moving body 2. In this case, since both the elastic member 22 and the air in the closed space 24 function as a damper, it is possible to absorb a larger amount of kinetic energy as compared with a shock absorber using only the elastic member or air pressure. When the moving body 2 separates from the shock absorber 20, the elastic member 22 elastically returns to the original shape due to its material property, and the air in the closed space 24 returns to the original pressure as the closed space 24 expands. .

【0010】図4は本発明の他の実施例を示す分解斜視
図、図5は断面図である。この実施例は保持部材21の
一方の面に2つの環状壁26a、26bを同心状に突設
してこれら両溝間の空間を収納凹部27とし、この収納
凹部27に環状に形成した弾性部材28を嵌着して収納
凹部27内に密閉空間29を形成したものである。この
ような構成においては、図7に示した精密加工機に適用
した場合、緩衝装置20の中心線を精密送りねじ2の軸
線と一致させて配置することができるので、移動体2の
当接時に精密送りねじ2に曲げ応力が生じるのを防止す
ることができる。
FIG. 4 is an exploded perspective view showing another embodiment of the present invention, and FIG. 5 is a sectional view. In this embodiment, two annular walls 26a and 26b are concentrically provided on one surface of the holding member 21 to form a space between these grooves as a storage recess 27, and an elastic member formed in the storage recess 27 in an annular shape. 28 is fitted to form a closed space 29 in the storage recess 27. In such a configuration, when applied to the precision processing machine shown in FIG. 7, since the center line of the shock absorber 20 can be arranged so as to coincide with the axis of the precision feed screw 2, the contact of the moving body 2 is made. It is possible to prevent bending stress from occurring in the precision feed screw 2 at times.

【0011】図6は本発明の更に他の実施例を示す断面
図である。この実施例は保持部材21に1つの環状壁2
6を突設して円形の収納凹部30を形成し、環状壁26
の内周に環状の弾性部材28を収納し、環状壁26と弾
性部材28とで囲まれた空間を密閉空間31としたもの
である。このような構成においても図4および図5に示
した上記実施例と同様な効果が得られることは明かであ
る。
FIG. 6 is a sectional view showing still another embodiment of the present invention. In this embodiment, the holding member 21 has one annular wall 2
6 is provided to form a circular storage recess 30, and the annular wall 26
An annular elastic member 28 is housed in the inner periphery of the above, and the space surrounded by the annular wall 26 and the elastic member 28 is a closed space 31. It is apparent that the same effect as that of the above-described embodiment shown in FIGS. 4 and 5 can be obtained with such a configuration.

【0012】なお、本発明は上記実施例に限定されるこ
となく種々の変形、変更が可能であり、例えば移動体が
磁性材料の場合弾性部材22または28内に磁石を埋設
しておくと、移動体2が緩衝装置から離間した際移動体
と磁石との間の磁気的吸引力により弾性部材を迅速に弾
性復帰させることができる。また、収納凹部からの弾性
部材の脱落を防止するため収納凹部の内周面に内フラン
ジもしくは係止部を設けるとよい。
The present invention is not limited to the above embodiment, and various modifications and changes are possible. For example, when the moving body is a magnetic material, if a magnet is embedded in the elastic member 22 or 28, When the moving body 2 is separated from the shock absorber, the elastic member can be quickly elastically restored by the magnetic attraction force between the moving body and the magnet. Further, in order to prevent the elastic member from falling off from the storage recess, an inner flange or a locking portion may be provided on the inner peripheral surface of the storage recess.

【0013】[0013]

【発明の効果】以上説明したように本発明に係る緩衝装
置は保持部材の収納凹部内に弾性部材を収納して凹部内
に密閉空間を形成し、弾性部材の圧縮変形と、密閉空間
内の空気の圧縮によって衝撃を緩和吸収するように構成
したので、構造が簡易にして部品点数が少なく、安価に
提供することができる。また、特に弾性部材を環状に形
成し、精密加工機の緩衝装置として用いると、緩衝装置
を送りねじの軸心と一致させて設置することができるた
め、移動体の当接時に送りねじに曲げ応力が生じるのを
防止することができる。
As described above, in the shock absorber according to the present invention, the elastic member is accommodated in the accommodating concave portion of the holding member to form the closed space in the concave portion, and the elastic member is compressed and deformed, and the sealed space is closed. Since the structure is configured to absorb and absorb the impact by compressing air, the structure is simplified, the number of parts is small, and it can be provided at low cost. In addition, if the elastic member is formed in an annular shape and used as a shock absorber for a precision processing machine, the shock absorber can be installed so that it coincides with the axis of the feed screw. It is possible to prevent stress from occurring.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る緩衝装置の一実施例を示す分解斜
視図である。
FIG. 1 is an exploded perspective view showing an embodiment of a shock absorber according to the present invention.

【図2】断面図である。FIG. 2 is a sectional view.

【図3】移動体の当接によって弾性部材が圧縮された状
態を示す図である。
FIG. 3 is a diagram showing a state in which an elastic member is compressed by the contact of a moving body.

【図4】本発明の他の実施例を示す分解斜視図である。FIG. 4 is an exploded perspective view showing another embodiment of the present invention.

【図5】断面図である。FIG. 5 is a sectional view.

【図6】本発明の更に他の実施例を示す断面図である。FIG. 6 is a sectional view showing still another embodiment of the present invention.

【図7】緩衝装置の従来例を示す概略構成図である。FIG. 7 is a schematic configuration diagram showing a conventional example of a shock absorber.

【符号の説明】[Explanation of symbols]

2 精密送りねじ 4 移動体 5 緩衝装置 6 シリンダ 9 ピストン 20 緩衝装置 21 保持部材 22 弾性部材 23 収納凹部 24 密閉空間 27 収納凹部 28 弾性部材 29 密閉凹部 30 収納凹部 31 密閉空間 2 Precision feed screw 4 Moving body 5 Shock absorber 6 Cylinder 9 Piston 20 Shock absorber 21 Holding member 22 Elastic member 23 Storage recess 24 Sealed space 27 Storage recess 28 Elastic member 29 Sealing recess 30 Storage recess 31 Sealed space

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 弾性部材の弾性変形により衝撃を吸収緩
和する緩衝装置において、保持部材に収納凹部を設け、
この収納凹部内に前記弾性部材を、その一部を外部に突
出させた状態で、かつ周面の一部を凹部内面に密接させ
て収納することにより収納凹部内に密閉空間を形成した
ことを特徴とする緩衝装置。
1. A cushioning device for absorbing and relaxing impact by elastic deformation of an elastic member, wherein a holding recess is provided in a holding member,
A closed space is formed in the storage recess by storing the elastic member in the storage recess with a part of the elastic member protruding outward and a part of the peripheral surface closely contacting the inner surface of the recess. Characteristic shock absorber.
JP35880792A 1992-12-28 1992-12-28 Shock absorber Pending JPH06200969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35880792A JPH06200969A (en) 1992-12-28 1992-12-28 Shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35880792A JPH06200969A (en) 1992-12-28 1992-12-28 Shock absorber

Publications (1)

Publication Number Publication Date
JPH06200969A true JPH06200969A (en) 1994-07-19

Family

ID=18461218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35880792A Pending JPH06200969A (en) 1992-12-28 1992-12-28 Shock absorber

Country Status (1)

Country Link
JP (1) JPH06200969A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008080467A (en) * 2006-09-29 2008-04-10 Brother Ind Ltd Machine tool
JP2011153690A (en) * 2010-01-28 2011-08-11 Smc Corp Stopper with damper
JP2011256992A (en) * 2010-06-11 2011-12-22 Yakumo Kk Device for damping of vibration impact, and multistory parking lot including the same
JP2016145618A (en) * 2015-02-09 2016-08-12 Nok株式会社 Buffer stopper

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008080467A (en) * 2006-09-29 2008-04-10 Brother Ind Ltd Machine tool
JP2011153690A (en) * 2010-01-28 2011-08-11 Smc Corp Stopper with damper
JP2011256992A (en) * 2010-06-11 2011-12-22 Yakumo Kk Device for damping of vibration impact, and multistory parking lot including the same
JP2016145618A (en) * 2015-02-09 2016-08-12 Nok株式会社 Buffer stopper

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