JP2575165Y2 - Connection structure of rotary actuator - Google Patents
Connection structure of rotary actuatorInfo
- Publication number
- JP2575165Y2 JP2575165Y2 JP1992039241U JP3924192U JP2575165Y2 JP 2575165 Y2 JP2575165 Y2 JP 2575165Y2 JP 1992039241 U JP1992039241 U JP 1992039241U JP 3924192 U JP3924192 U JP 3924192U JP 2575165 Y2 JP2575165 Y2 JP 2575165Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting member
- rotary actuator
- drive shaft
- insertion hole
- control rod
- 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.)
- Expired - Lifetime
Links
Landscapes
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は、減衰力可変型液圧緩
衝器のコントロールロッド等回転軸の先端部を回転アク
チュエータの駆動軸先端部に連結する回転アクチュエー
タの連結構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a rotary actuator for connecting a distal end of a rotary shaft such as a control rod of a variable damping force type hydraulic shock absorber to a distal end of a drive shaft of a rotary actuator.
【０００２】[0002]
【従来の技術】従来、自動車等において使用される減衰
力可変型液圧緩衝器には、例えば実開昭６０−６９７１
１号公報に記載されたものがある。この液圧緩衝器に適
用される連結構造では、図３に示すように、ピストンロ
ッド２０の中心穴２０ａ内に挿入されたコントロールロ
ッド２１（回転軸）の先端部に、中心部を通り径方向に
延在する平板状部２１ａを形成し、該平板状部２１ａに
嵌合する係合溝２２ａを回転アクチュエータ２３の駆動
軸２２の先端部に形成して、コントロールロッド２１と
駆動軸２２とを同心に連結していた。2. Description of the Related Art Conventionally, variable damping force type hydraulic shock absorbers used in automobiles and the like include, for example, Japanese Utility Model Laid-Open No. 60-6971.
There is one described in Japanese Patent Publication No. In the connection structure applied to this hydraulic shock absorber, as shown in FIG. 3, a distal end portion of a control rod 21 (rotary shaft) inserted into a center hole 20a of a piston rod 20 has a radial direction passing through the center portion. Is formed at the tip of the drive shaft 22 of the rotary actuator 23 so that the control rod 21 and the drive shaft 22 are connected to each other. It was concentrically connected.
【０００３】また、他の連結構造としては、図４に示す
ように、連結部材２４を使用してコントロールロッド２
１と駆動軸２２とを同心に連結するものがある。この液
圧緩衝器では、図５及び図６（１）、（２）に詳細を示
すように、駆動軸２２より大径の円柱状素材の一端部
に、駆動軸２２の先端部に形成された係合溝２２ａに嵌
合する平板状部２４ａ、他端側に円柱部２４ｂをそれぞ
れ形成する一方、平板状部２４ａに固定窓部２５、円柱
部２４ｂの中心部に、基端２４ｃ及び前記固定窓部２５
に開口する挿入穴部２６をそれぞれ形成して、前記連結
部材２４を構成し、該連結部材２４の固定は挿入穴部２
６を通して挿入されたコントロールロッド２１の先端部
２１ａを固定窓部２５に加締め嵌合させて行っていた。[0003] As another connection structure, as shown in FIG.
1 and the drive shaft 22 are connected concentrically. As shown in detail in FIGS. 5 and 6 (1) and (2), this hydraulic shock absorber is formed at one end of a cylindrical material having a diameter larger than that of the drive shaft 22 and at the tip of the drive shaft 22. A flat portion 24a fitted in the engaging groove 22a and a cylindrical portion 24b formed on the other end side, respectively, while a fixed window portion 25 is formed in the flat portion 24a, and a base end 24c and a central portion of the cylindrical portion 24b are formed. Fixed window 25
The connecting member 24 is formed by forming an insertion hole 26 which is opened to each other.
In this case, the distal end portion 21a of the control rod 21 inserted through 6 is crimped and fitted to the fixed window portion 25.
【０００４】[0004]
【考案が解決しようとする課題】しかしながら、前者の
連結構造では、コントロールロッド２１は駆動軸２２よ
り小径の断面円形棒状に形成されている。このため、コ
ントロールロッド２１の先端部に形成された平板状部２
１ａの両側端は駆動軸２２の先端部に形成された係合溝
２２ａの両側開口部より引込んだ状態となる。また、２
面幅加工によりコントロールロッド２１の先端部に平板
状部２１ａを精度良く形成することは容易でなく、平板
状部２１ａと係合溝２２ａとの隙間が大きくなる。従っ
て、前記間隙によるコントロールロッド２１と駆動軸２
２との回転方向でのバックラッシ量が大きくなってしま
い、駆動軸２２の回転方向を変更した時、コントロール
ロッド２１の回転角度に大きな誤差を生じ、その結果、
所望の減衰力値のばらつきが大きくなった。However, in the former connection structure, the control rod 21 is formed in a circular rod shape having a smaller diameter than the drive shaft 22. For this reason, the flat portion 2 formed at the distal end of the control rod 21
Both ends of 1a are retracted from openings on both sides of an engagement groove 22a formed at the tip of the drive shaft 22. Also, 2
It is not easy to accurately form the flat portion 21a at the distal end of the control rod 21 by the surface width processing, and the gap between the flat portion 21a and the engaging groove 22a increases. Therefore, the control rod 21 and the drive shaft 2 due to the gap
2, the backlash amount in the rotation direction with respect to 2 becomes large, and when the rotation direction of the drive shaft 22 is changed, a large error occurs in the rotation angle of the control rod 21. As a result,
The dispersion of the desired damping force value has increased.
【０００５】また、後者の連結構造では、円柱状素材の
先端部の両側面を大幅に切削加工して平板状部２４ａを
形成する必要があり、しかも精度良く形成しなければな
らないから、連結部材２４が高価なものとなる。また、
連結部材２４が駆動力を受ける強度材で構成されてお
り、ロッド挿入穴部２６が形成された円柱部２４ｂを有
するものであるから、連結部材２４の重量が重くなり、
軽量化が図れなかった。Further, in the latter connection structure, it is necessary to significantly cut both side surfaces of the front end portion of the columnar material to form the flat plate portion 24a, and the connection member must be formed with high precision. 24 becomes expensive. Also,
Since the connecting member 24 is formed of a strength material that receives a driving force and has the cylindrical portion 24b in which the rod insertion hole 26 is formed, the weight of the connecting member 24 increases,
The weight could not be reduced.
【０００６】この考案は上記後者の連結構造が有する課
題を解決するためになしたもので、連結部材の改良によ
り軽量化と製作コストの低減が図れる回転アクチュエー
タの連結構造を提供することを目的とする。The present invention has been made to solve the problem of the latter connecting structure, and has as its object to provide a connecting structure of a rotary actuator capable of reducing weight and manufacturing cost by improving connecting members. I do.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、この考案は、連結部材を、回転アクチュエータの駆
動軸先端部に形成された係合溝に嵌合する平板で構成
し、該連結部材に、同一直線上で互い違いに両表面側に
膨出した複数の円弧状湾曲片部を形成して、連結部材の
一端に開口する挿入穴部を構成する一方、前記連結部材
の他端部に固定窓部を形成し、該固定窓部に、前記挿入
穴部を通して挿入された回転軸先端部を固定したもので
ある。In order to achieve the above-mentioned object, according to the present invention, the connecting member is constituted by a flat plate which fits into an engaging groove formed at the tip of the drive shaft of the rotary actuator. On the member, a plurality of arc-shaped curved pieces bulging alternately on both surfaces on the same straight line are formed to form an insertion hole opening at one end of the connecting member, while the other end of the connecting member is formed. A fixed window portion is formed in the fixed window portion, and the tip of the rotating shaft inserted through the insertion hole is fixed to the fixed window portion.
【０００８】[0008]
【作用】上記の構成により、連結部材の係合溝との嵌合
部は厚み寸法精度が高い平板部分であるから、連結部材
と係合溝との隙間は少なくなる。また、平板に形成され
た複数の円弧状湾曲片部からなる挿入穴部を使用して、
回転軸に連結部材が従来と同様に連結される。According to the above construction, since the fitting portion of the connecting member to the engaging groove is a flat plate portion having high thickness dimensional accuracy, the gap between the connecting member and the engaging groove is reduced. Also, by using an insertion hole formed of a plurality of arc-shaped curved pieces formed in a flat plate,
The connecting member is connected to the rotating shaft in the same manner as in the related art.
【０００９】[0009]
【実施例】以下、この考案の一実施例を図面により説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１は回転アクチュエータの連結構造を示
す一部破断の斜視図、図２（１）は図１の要部正面図、
図２（２）は（１）のＡ−Ａ線に沿う側断面図である。
これらの図において１は連結部材、２はコントロールロ
ッド（回転軸）である。FIG. 1 is a partially cutaway perspective view showing a connecting structure of a rotary actuator, FIG. 2 (1) is a front view of a main part of FIG.
FIG. 2B is a side sectional view taken along line AA of FIG.
In these figures, 1 is a connecting member, and 2 is a control rod (rotary shaft).
【００１１】連結部材１は、図示しない回転アクチュエ
ータの駆動軸先端部に形成された係合溝に嵌合してその
両側開口部から突出する厚さ及び幅をもった平板で構成
されている。The connecting member 1 is formed of a flat plate having a thickness and a width which fits into an engaging groove formed at the tip of a drive shaft of a rotary actuator (not shown) and protrudes from openings on both sides thereof.
【００１２】この連結部材１には、その一端１ａに開口
する挿入穴部３を構成するように同一直線上で互い違い
に両表面側に膨出した複数の円弧状湾曲片部４、５が形
成されている。The connecting member 1 is formed with a plurality of arcuate curved pieces 4, 5 bulging alternately on both surfaces on the same straight line so as to form an insertion hole 3 opening at one end 1a. Have been.
【００１３】前記連結部材１の他端部１ｂには、前記駆
動軸先端部の係合溝に嵌合させ易くするテーパ面を先端
側に有する先端係合部６と、前記挿入穴部３に連続する
固定窓部７とが形成されている。The other end portion 1b of the connecting member 1 has a distal end engaging portion 6 having a tapered surface on a distal end side for facilitating engagement with the engaging groove of the driving shaft distal end portion. A continuous fixed window 7 is formed.
【００１４】固定窓部７には、挿入穴部３を通して挿入
されたコントロールロッド２の先端部２ａが加締め嵌合
されて固定されている。つまり、コントロールロッド２
の先端部には、連結部材１の両表面側からの加締めによ
って、固定窓部７に嵌合する拡大係合部２ａが形成さ
れ、該拡大係合部２ａの両側面が当接する前記固定窓部
７の両側面７ａは、拡大係合部２ａの回り止め及びロッ
ド挿入穴部３側への抜け止めに有効な形状、例えば凹円
弧面や、挿入穴部３とは反対側に拡大するテーパ面等に
形成されている。The distal end portion 2a of the control rod 2 inserted through the insertion hole 3 is fixed to the fixed window portion 7 by caulking and fitting. That is, control rod 2
An enlarged engaging portion 2a that fits into the fixed window portion 7 is formed at the front end of the connecting member 1 by caulking from both surface sides of the connecting member 1. The fixed engaging portion 2a is in contact with both side surfaces of the enlarged engaging portion 2a. Both side surfaces 7a of the window portion 7 have shapes effective for preventing the enlarged engaging portion 2a from rotating and preventing the rod from being inserted into the rod insertion hole 3 side, for example, a concave arcuate surface or expanding to the side opposite to the insertion hole portion 3. It is formed on a tapered surface or the like.
【００１５】以上の構成において、連結部材１の製作
時、駆動軸先端部の係合溝に嵌合してその両側開口部か
ら突出する厚さ及び幅をもった平板素材を準備し、この
平板素材に対して先端係合部６のテーパ面を切削加工等
により、固定窓部７を打抜き加工等により、円弧状湾曲
片部４、５を塑性加工によりそれぞれ形成する。In the above construction, when the connecting member 1 is manufactured, a flat plate material having a thickness and a width which is fitted into the engaging groove at the tip of the drive shaft and protrudes from the opening on both sides thereof is prepared. The tapered surface of the distal end engaging portion 6 is formed by cutting or the like, the fixed window portion 7 is formed by punching or the like, and the arc-shaped curved piece portions 4 and 5 are formed by plastic working.
【００１６】連結部材１の装着使用時、挿入穴部３を通
して固定窓部７にコントロールロッド２の先端部を挿入
した後、連結部材１の両表面側からの加締めによりコン
トロールロッド２の先端部に拡大係合部２ａを形成し
て、固定窓部７に嵌合固定する。次いで、連結部材１の
先端係合部６に駆動軸先端部の係合溝に嵌合させ、コン
トロールロッド２と前記駆動軸とを同心に連結した状態
で、回転アクチュエータをピストンロッド８と一体的に
固定する。When the connecting member 1 is mounted, the distal end of the control rod 2 is inserted into the fixed window 7 through the insertion hole 3 and then crimped from both surface sides of the connecting member 1. The enlarged engaging portion 2a is formed on the fixed window portion 7 and fixed. Next, the rotary actuator is integrated with the piston rod 8 in a state where the control rod 2 and the drive shaft are concentrically connected to the distal end engaging portion 6 of the connecting member 1 in the engaging groove at the distal end of the drive shaft. Fixed to.
【００１７】このように組み立てられた連結構造におい
て、連結部材１の先端係合部６は平板を使用するため従
来の２面幅加工による場合に比べて極めて厚さ寸法精度
が良いから、該先端係合部６と駆動軸先端部の係合溝と
の隙間は少ない。また、先端係合部６が係合溝の両側開
口部から突出しており、該係合溝を構成する駆動軸の外
周面側開口端が先端係合部６に当接する。従って、前記
隙間によるコントロールロッド２と駆動軸との回転方向
でのバックラッシ量は小さく、このため駆動軸の回転方
向を変更した時にコントロールロッド２の回転角度に生
じる誤差が小さくなると共に、係合溝の全長を一杯に使
ってコントロールロッド２に回転力が有効に伝達され
る。In the connection structure assembled as described above, since the front end engagement portion 6 of the connection member 1 uses a flat plate, the thickness and dimensional accuracy are extremely high as compared with the conventional two-plane width processing. The gap between the engagement portion 6 and the engagement groove at the tip of the drive shaft is small. Further, the distal end engaging portion 6 protrudes from both side openings of the engaging groove, and the outer peripheral surface side opening end of the drive shaft constituting the engaging groove comes into contact with the distal end engaging portion 6. Accordingly, the amount of backlash in the rotation direction between the control rod 2 and the drive shaft due to the clearance is small, and therefore, the error generated in the rotation angle of the control rod 2 when the rotation direction of the drive shaft is changed is reduced, and the engagement groove is reduced. The rotation force is effectively transmitted to the control rod 2 by fully using the entire length of the control rod 2.
【００１８】[0018]
【考案の効果】以上の通りこの考案は、連結部材を、回
転アクチュエータの駆動軸先端部に形成された係合溝に
嵌合する平板で構成し、該連結部材に、同一直線上で互
い違いに両表面側に膨出した複数の円弧状湾曲片部を形
成して、連結部材の一端に開口する挿入穴部を構成する
一方、前記連結部材の他端部に固定窓部を形成し、該固
定窓部に、前記挿入穴部を通して挿入された回転軸先端
部を固定しており、平板の高い厚さ寸法精度を利用して
連結部材を駆動軸先端部の係合溝内に少ない隙間で嵌合
させることができるから、連結部材と駆動軸との回転方
向でのバックラッシ量を低減させて駆動軸の回転方向を
変更した時の回転軸の回転角度の誤差を小さくすること
ができ、このため回転軸の位置決め精度の向上が図れる
と共に、係合溝の全長を一杯に使って回転軸に回転力を
有効に伝達できる。As described above, according to the present invention, the connecting member is constituted by a flat plate which fits into the engaging groove formed at the tip of the drive shaft of the rotary actuator, and the connecting member is alternately arranged on the same straight line. Forming a plurality of arcuate curved pieces protruding on both surface sides to form an insertion hole opening at one end of the connecting member, and forming a fixed window at the other end of the connecting member, In the fixed window, the tip of the rotating shaft inserted through the insertion hole is fixed, and the connecting member is inserted into the engaging groove of the tip of the driving shaft with a small gap by utilizing the high thickness dimensional accuracy of the flat plate. Since the fitting can be performed, the amount of backlash in the rotation direction between the connecting member and the drive shaft can be reduced, and the error in the rotation angle of the rotation shaft when the rotation direction of the drive shaft is changed can be reduced. Therefore, while improving the positioning accuracy of the rotating shaft, It can effectively transmit the rotational force to the rotating shaft with the aid of a long in full.
【００１９】また、連結部材を平板で構成して、従来の
ような切削加工による平板状部の形成を不要にすると共
に、挿入穴部を構成する円弧状湾曲片部を塑性加工によ
り容易に形成できるから、連結部材の製作が容易に低コ
ストで行えると共に、連結部材の軽量化が図れる。Further, the connecting member is formed of a flat plate, so that it is not necessary to form a flat plate portion by a conventional cutting process, and the arc-shaped curved piece portion forming the insertion hole portion is easily formed by plastic working. Therefore, the connecting member can be easily manufactured at low cost, and the weight of the connecting member can be reduced.
【図１】この考案の一実施例の回転アクチュエータの連
結構造を示す一部破断の斜視図である。FIG. 1 is a partially broken perspective view showing a connection structure of a rotary actuator according to an embodiment of the present invention.
【図２】（１） 図１の要部正面図である。 （２） （１）のＡ−Ａ線に沿う側断面図である。FIG. 2A is a front view of a main part of FIG. (2) It is a sectional side view which follows the AA line of (1).
【図３】従来例の回転アクチュエータの連結構造を示す
断面図である。FIG. 3 is a cross-sectional view showing a connection structure of a conventional rotary actuator.
【図４】他の従来例の回転アクチュエータの連結構造を
示す一部破断の正面図である。FIG. 4 is a partially broken front view showing a connection structure of another conventional rotary actuator.
【図５】図４の詳細を示す一部破断の斜視図である。FIG. 5 is a partially broken perspective view showing details of FIG. 4;
【図６】（１） 図５の正面図である。 （２） （１）のＢ−Ｂ線に沿う側断面図である。FIG. 6 (1) is a front view of FIG. (2) It is a sectional side view along the BB line of (1).
１ 連結部材 １ａ 一端 １ｂ 他端部 ２ コントロールロッド（回転軸） ２ａ 先端部（拡大係合部） ３ 挿入穴部 ４、５ 円弧状湾曲片部 ７ 固定窓部 DESCRIPTION OF SYMBOLS 1 Connecting member 1a One end 1b Other end 2 Control rod (rotating shaft) 2a Tip (enlarged engagement part) 3 Insertion hole 4, 5 Arc-shaped curved piece 7 Fixed window
Claims (1)
軸先端部に形成された係合溝に嵌合する平板で構成し、
該連結部材に、同一直線上で互い違いに両表面側に膨出
した複数の円弧状湾曲片部を形成して、連結部材の一端
に開口する挿入穴部を構成する一方、前記連結部材の他
端部に固定窓部を形成し、該固定窓部に、前記挿入穴部
を通して挿入された回転軸先端部を固定したことを特徴
とする回転アクチュエータの連結構造。The connecting member is formed of a flat plate that fits into an engaging groove formed at a tip end of a drive shaft of the rotary actuator,
The connecting member is formed with a plurality of arcuate curved pieces bulging alternately on both surfaces on the same straight line to form an insertion hole opening at one end of the connecting member. A connection structure for a rotary actuator, wherein a fixed window portion is formed at an end portion, and a tip portion of a rotary shaft inserted through the insertion hole portion is fixed to the fixed window portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992039241U JP2575165Y2 (en) | 1992-05-18 | 1992-05-18 | Connection structure of rotary actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992039241U JP2575165Y2 (en) | 1992-05-18 | 1992-05-18 | Connection structure of rotary actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0591919U JPH0591919U (en) | 1993-12-14 |
| JP2575165Y2 true JP2575165Y2 (en) | 1998-06-25 |
Family
ID=12547639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992039241U Expired - Lifetime JP2575165Y2 (en) | 1992-05-18 | 1992-05-18 | Connection structure of rotary actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2575165Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2583416Y2 (en) * | 1993-10-08 | 1998-10-22 | 日本ミクロコーティング株式会社 | Nail polishing tools |
-
1992
- 1992-05-18 JP JP1992039241U patent/JP2575165Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0591919U (en) | 1993-12-14 |
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