JP2011043175A - Fixing mechanism - Google Patents
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- JP2011043175A JP2011043175A JP2009189829A JP2009189829A JP2011043175A JP 2011043175 A JP2011043175 A JP 2011043175A JP 2009189829 A JP2009189829 A JP 2009189829A JP 2009189829 A JP2009189829 A JP 2009189829A JP 2011043175 A JP2011043175 A JP 2011043175A
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本発明は、駆動用ネジの固定機構に関する。 The present invention relates to a driving screw fixing mechanism.
従来から、駆動用ネジの位置を固定する様々な方式の固定機構が知られ、物体を移動させる直動ステージ装置等の移動機構や、ミラーホルダーやレンズホルダー等の光学素子ホルダー等に広く使用されている（例えば、特許文献１）。 Conventionally, various types of fixing mechanisms for fixing the position of a driving screw are known, and they are widely used in moving mechanisms such as linear stage devices that move objects, optical element holders such as mirror holders and lens holders, etc. (For example, Patent Document 1).
図４に、ミラーホルダーの一例を示す。ミラーホルダーは、レーザ光を反射させるミラーを保持し、ミラーに照射されたレーザ光の反射角度を正確に調整するものである。図４に示すミラーホルダーは、ミラーを保持する保持部１０１と、本体１０２を介して保持部を押圧する駆動用ネジ１０３、１０４及びピボット１０５と、駆動用ネジ１０３、１０４を固定する固定機構１０６、１０７とを備える。このミラーホルダーにおいて、駆動用ネジ１０３を回転させて推し進めると保持部１０１は右傾し後退させると左傾する。また、駆動用ネジ１０４を回転させて推し進めると保持部１０１は前傾し後退させると後傾する。このように２つの駆動用ネジ１０３、１０４を前後に駆動することにより保持部１０１に保持されたミラーの傾きを調節することができる。このようなミラーホルダーでは、駆動用ネジの固定時に駆動用ネジが少しでも動いてしまうと反射光の進む方向がずれてしまうため、駆動用ネジの位置をずらすことなく正確に固定することが極めて重要である。 FIG. 4 shows an example of the mirror holder. The mirror holder holds a mirror that reflects the laser light, and accurately adjusts the reflection angle of the laser light applied to the mirror. The mirror holder shown in FIG. 4 includes a holding unit 101 that holds the mirror, driving screws 103 and 104 and a pivot 105 that press the holding unit via the main body 102, and a fixing mechanism 106 that fixes the driving screws 103 and 104. , 107. In this mirror holder, when the drive screw 103 is rotated and pushed forward, the holding portion 101 is tilted to the right, and is tilted to the left when it is retracted. Further, when the drive screw 104 is rotated and pushed forward, the holding portion 101 tilts forward and when it is retracted, it tilts backward. Thus, by driving the two drive screws 103 and 104 back and forth, the tilt of the mirror held by the holding unit 101 can be adjusted. In such a mirror holder, if the drive screw moves even a little when the drive screw is fixed, the traveling direction of the reflected light will be shifted, so it is extremely difficult to fix the drive screw accurately without shifting the position. is important.
図５に、駆動用ネジを固定する固定機構の従来例を示す。図５に示す固定機構は、本体２５０に取り付けられ駆動用ネジ２１０に螺合する雌ネジブッシュ２２０と、本体２５０と隙間を持たせた状態で駆動用ネジ２１０に螺合する雌ネジ２４０と、本体２５０に螺合し雌ネジ２４０を支えるクランプネジ２３０とを備える。図５に示す固定機構では、クランプネジ２３０を回転させて本体２５０に締め付けることにより、雌ネジ２４０を介して駆動用ネジ２１０を押さえつけ固定する手法を採用している。 FIG. 5 shows a conventional example of a fixing mechanism for fixing a driving screw. The fixing mechanism shown in FIG. 5 includes a female screw bush 220 that is attached to the main body 250 and is screwed to the driving screw 210, a female screw 240 that is screwed to the driving screw 210 in a state where there is a gap with the main body 250, A clamp screw 230 that is screwed into the main body 250 and supports the female screw 240 is provided. In the fixing mechanism shown in FIG. 5, a method of pressing and fixing the driving screw 210 via the female screw 240 by rotating the clamp screw 230 and tightening it to the main body 250 is adopted.
しかしながら、図５に示す固定機構の手法では、駆動用ネジ２１０をその進行方向に押さえつけているため、原理的に本体２５０と雌ネジ２４０との隙間分だけ駆動用ネジ２１０の固定位置がずれてしまう。また、この手法では、クランプネジ２３０の力が加わる位置（力点）と駆動用ネジ２１０に力が加わる位置（作用点）が同一軸上にないため、クランプネジ２３０を締め付けると駆動用ネジ２１０を斜めにする作用が働き、駆動用ネジ２１０の固定位置がずれてしまう。 However, in the method of the fixing mechanism shown in FIG. 5, since the driving screw 210 is pressed in the moving direction, the fixing position of the driving screw 210 is shifted by the gap between the main body 250 and the female screw 240 in principle. End up. In this method, the position where the force of the clamp screw 230 is applied (force point) and the position where the force is applied to the drive screw 210 (action point) are not on the same axis. The action which makes it diagonal acts and the fixing position of the drive screw 210 is shifted.
本発明は、以上のような課題に鑑みてなされたものであり、その目的とするところは、駆動用ネジを固定する際に生じる固定位置のずれを排除し、駆動用ネジを正確に固定することが可能な固定機構を提供することにある。 The present invention has been made in view of the above-described problems, and an object of the present invention is to eliminate a fixing position shift that occurs when a driving screw is fixed, and to accurately fix the driving screw. An object of the present invention is to provide a fixing mechanism that can be used.
（１）本発明は、駆動用ネジの固定機構において、
前記駆動用ネジに螺合する雌ネジブッシュと、
前記雌ネジブッシュと一部が繋がって形成され、内径部と外径部とにネジ部を有する締付け部と、
前記締付け部に螺合する雌ネジナットとを備え、
前記雌ネジナットを回転させることにより、前記締付け部が、前記駆動用ネジの進行方向と垂直な方向に変形して前記駆動用ネジを締め付けるように構成されたことを特徴とする。
(1) The present invention relates to a drive screw fixing mechanism,
A female screw bush threadedly engaged with the drive screw;
A tightening portion that is formed by being partly connected to the female screw bush, and has a screw portion at an inner diameter portion and an outer diameter portion,
A female screw nut screwed into the tightening portion,
By rotating the female screw nut, the tightening portion is configured to be deformed in a direction perpendicular to the advancing direction of the driving screw to tighten the driving screw.
本発明によれば、雌ネジナットを回転させて駆動用ネジを固定する際に、駆動用ネジの進行方向に力が加わらず、駆動用ネジの進行方向と垂直な力が加わるため、固定時のずれを排除して駆動用ネジを正確に固定することができる。 According to the present invention, when fixing the driving screw by rotating the female screw nut, no force is applied in the traveling direction of the driving screw, and a force perpendicular to the traveling direction of the driving screw is applied. The drive screw can be accurately fixed by eliminating the deviation.
（２）また本発明において、
前記締付け部の外径部に、少なくとも３つのネジ部を周方向に間隔を空けて設け、
前記締付け部の前記雌ネジブッシュと繋がっていない部分に、軸方向の全長に渡るスリットと、前記少なくとも３つのネジ部のうち他のネジ部よりも径の大きなネジ部とを設けるようにしてもよい。
(2) In the present invention,
On the outer diameter part of the tightening part, at least three screw parts are provided at intervals in the circumferential direction,
In the portion of the tightening portion that is not connected to the female screw bush, a slit that extends over the entire length in the axial direction and a screw portion having a diameter larger than that of the other screw portions among the at least three screw portions may be provided. Good.
本発明によれば、雌ネジナットを回転させたときに、締付け部の径の大きなネジ部が設けられた部分が駆動用ネジの進行方向と垂直な方向に変形し、駆動用ネジの進行方向と垂直な力を駆動用ネジに加えることができる。 According to the present invention, when the female screw nut is rotated, the portion where the screw portion having a large diameter of the tightening portion is deformed in a direction perpendicular to the traveling direction of the driving screw, and the traveling direction of the driving screw is A normal force can be applied to the drive screw.
（３）また本発明において、
前記締付け部の内径部に、軸方向の全長に渡る溝を設けるようにしてもよい。
(3) In the present invention,
You may make it provide the groove | channel over the full length of an axial direction in the internal diameter part of the said clamping part.
本発明によれば、雌ネジナットを回転させて駆動用ネジを締め付けたときに、駆動用ネジが回転してしまうことを防止することができる。 According to the present invention, it is possible to prevent the drive screw from rotating when the drive screw is tightened by rotating the female screw nut.
（４）また本発明において、
前記雌ネジナットの内径部の形状を、径の大きな部分と径の小さな部分とを有する形状とするようにしてもよい。
(4) In the present invention,
You may make it make the shape of the internal diameter part of the said internal thread nut into a shape which has a large diameter part and a small diameter part.
以下、本実施形態について説明する。なお、以下に説明する本実施形態は、特許請求の範囲に記載された本発明の内容を不当に限定するものではない。また本実施形態で説明される構成の全てが、本発明の必須構成要件であるとは限らない。 Hereinafter, this embodiment will be described. In addition, this embodiment demonstrated below does not unduly limit the content of this invention described in the claim. In addition, all the configurations described in the present embodiment are not necessarily essential configuration requirements of the present invention.
１．構成
図１は、本実施形態の固定機構の構成の一例を示す図である。
1. Configuration FIG. 1 is a diagram illustrating an example of a configuration of a fixing mechanism of the present embodiment.
本実施形態の固定機構は、駆動用ネジ１０に螺合する雌ネジブッシュ２０と、駆動用ネジ１０に螺合し、駆動用ネジ１０を固定する際に駆動用ネジ１０を締め付ける締付け部３０と、締付け部３０に螺合する雌ネジナット４０とを備える。締付け部３０は、雌ネジブッシュ２０とその一部が繋がって一体的に形成され、雌ネジブッシュ２０と同一軸上に形成されている。また、雌ネジブッシュ２０は、本体５０に取り付けられている。 The fixing mechanism of the present embodiment includes a female screw bush 20 that is screwed to the driving screw 10, and a tightening portion 30 that is screwed to the driving screw 10 and fastens the driving screw 10 when the driving screw 10 is fixed. And a female screw nut 40 that is screwed into the tightening portion 30. The tightening portion 30 is integrally formed by connecting the female screw bush 20 and a part thereof, and is formed on the same axis as the female screw bush 20. The female screw bush 20 is attached to the main body 50.
本体５０と可動部６０（例えば、図４に示すミラーホルダーの保持部１０１や、直動ステージ装置の可動部）の間隔を調節する際には、駆動用ネジ１０を回して駆動用ネジ１０を前後に進行させる。なお、駆動用ネジ１０の先端には磨耗防止用のヘッド１２（例えば、人工サファイアにより形成されたヘッド）が取り付けられている。 When adjusting the distance between the main body 50 and the movable part 60 (for example, the holding part 101 of the mirror holder shown in FIG. 4 or the movable part of the linear motion stage device), the drive screw 10 is turned by turning the drive screw 10. Advance back and forth. A wear prevention head 12 (for example, a head formed of artificial sapphire) is attached to the tip of the drive screw 10.
また、駆動用ネジ１０の位置を固定する際には、雌ネジナット４０を回転させる。雌ネジナット４０を回転させると、締付け部３０が、駆動用ネジ１０の進行方向と垂直な方向に変形して駆動用ネジ１０を締め付ける。 Further, when fixing the position of the driving screw 10, the female screw nut 40 is rotated. When the female screw nut 40 is rotated, the tightening portion 30 is deformed in a direction perpendicular to the traveling direction of the driving screw 10 and tightens the driving screw 10.
図２は、雌ネジブッシュ２０と締付け部３０の外観の一例を示す斜視図である。 FIG. 2 is a perspective view showing an example of the external appearance of the female screw bush 20 and the tightening portion 30.
図２に示すように、締付け部３０は、雌ネジブッシュ２０とその一部が繋がって形成されている。また、締付け部３０の雌ネジブッシュ２０と繋がっていない部分には、軸方向の全長に渡るスリット３２が設けられている。 As shown in FIG. 2, the tightening portion 30 is formed by connecting the female screw bush 20 and a part thereof. In addition, a slit 32 that extends over the entire length in the axial direction is provided in a portion of the tightening portion 30 that is not connected to the female screw bush 20.
また、締付け部３０の内径部と外径部にはそれぞれネジ部が設けられ、締付け部３０の内径部には駆動用ネジ１０が螺合し、締付け部３０の外径部には雌ネジナット４０が螺合する。なお、雌ネジブッシュ２０と締付け部３０の内径部は同一の径となっている。 In addition, a screw portion is provided on each of the inner diameter portion and the outer diameter portion of the tightening portion 30, the driving screw 10 is screwed into the inner diameter portion of the tightening portion 30, and the female screw nut 40 is disposed on the outer diameter portion of the tightening portion 30. Screwed together. Note that the inner diameter portions of the female screw bush 20 and the tightening portion 30 have the same diameter.
締付け部３０の外径部には、３つのネジ部３４ａ、３４ｂ、３４ｃが周方向に間隔を空けて設けられている。ネジ部３４ａ（ネジ部３４ｂ、３４ｃよりも径の大きなネジ部）は、雌ネジブッシュ２０と繋がっていない部分であって、スリット３２と隣接する位置に設けられ、ネジ部３４ｂ、３４ｃは、雌ネジブッシュ２０と繋がっている部分に設けられている。 Three screw portions 34 a, 34 b, 34 c are provided on the outer diameter portion of the tightening portion 30 at intervals in the circumferential direction. The screw portion 34a (the screw portion having a diameter larger than that of the screw portions 34b and 34c) is a portion not connected to the female screw bush 20, and is provided at a position adjacent to the slit 32. The screw portions 34b and 34c are female It is provided at a portion connected to the screw bush 20.
締付け部３０の３つのネジ部３４ａ、３４ｂ、３４ｃの間には、ネジが形成されず雌ネジナット４０と螺合しない領域が設けられている。また、締付け部３０の内径部には、逃がし部３６（軸方向の全長に渡る溝）が設けられている。 Between the three screw portions 34 a, 34 b, 34 c of the tightening portion 30, a region where no screw is formed and the female screw nut 40 is not screwed is provided. Further, a relief portion 36 (a groove extending over the entire length in the axial direction) is provided in the inner diameter portion of the tightening portion 30.
図３（Ａ）、図３（Ｂ）は、締付け部３０と雌ネジナット４０の構成の一例を示す図である。なお、図３（Ａ）は、駆動用ネジ１０を固定していない状態における上記構成を示し、図３（Ｂ）は、駆動用ネジ１０を固定した状態における上記構成を示す。 FIGS. 3A and 3B are diagrams showing an example of the configuration of the tightening portion 30 and the female screw nut 40. 3A shows the above configuration in a state in which the driving screw 10 is not fixed, and FIG. 3B shows the above configuration in a state in which the driving screw 10 is fixed.
図３（Ａ）に示すように、締付け部３０のスリット３２に隣接して設けられたネジ部３４ａの径Ｒａ（半径）は、ネジ部３４ｂ、３４ｃの径Ｒｂ、Ｒｃと比べて大きくなっている。そして、図３（Ａ）に示す状態において、締付け部３０に螺合する雌ネジナット４０の内径部の形状は、ネジ部３４ａと螺合する部分においては径が大きく、ネジ部３４ｂ、３４ｃと螺合する部分においては径が小さい形状となっている。 As shown in FIG. 3A, the diameter Ra (radius) of the screw portion 34a provided adjacent to the slit 32 of the tightening portion 30 is larger than the diameters Rb and Rc of the screw portions 34b and 34c. Yes. In the state shown in FIG. 3A, the shape of the inner diameter portion of the female screw nut 40 screwed into the tightening portion 30 is large at the portion screwed with the screw portion 34a, and the screw portions 34b and 34c are screwed. In the mating portion, the diameter is small.
上述したように、径の大きなネジ部３４ａは、締付け部３０の雌ネジブッシュ２０と繋がっていない部分に設けられており、且つネジ部３４ａと隣接する位置にはスリット３２が設けられている。従って、図３（Ｂ）に示すように、雌ネジナット４０を図中Ｖに示す方向に回転させると、径の大きなネジ部３４ａが雌ネジナット４０の内径部の径の小さな部分によって押され、締付け部３０のネジ部３４ａが設けられた部分が、軸中心に向かう方向（駆動用ネジ１０の進行方向と垂直な方向）に変形し、締付け部３０に螺合する駆動用ネジ１０を締め付ける。 As described above, the screw portion 34a having a large diameter is provided at a portion not connected to the female screw bush 20 of the tightening portion 30, and the slit 32 is provided at a position adjacent to the screw portion 34a. Therefore, as shown in FIG. 3B, when the female screw nut 40 is rotated in the direction indicated by V in the drawing, the screw portion 34a having a large diameter is pushed by the small diameter portion of the inner diameter portion of the female screw nut 40 and tightened. A portion of the portion 30 provided with the screw portion 34a is deformed in a direction toward the center of the axis (a direction perpendicular to the advancing direction of the driving screw 10), and the driving screw 10 screwed into the tightening portion 30 is tightened.
また、締付け部３０の内径部に設けられた逃がし部３６は、雌ネジナット４０を回転させて駆動用ネジ１０を締め付けたときに、駆動用ネジ１０が回転してしまうことを防止する。 Further, the relief portion 36 provided in the inner diameter portion of the tightening portion 30 prevents the driving screw 10 from rotating when the female screw nut 40 is rotated and the driving screw 10 is tightened.
なお、ネジ部３４ａ、３４ｂ、３４ｃの間には、雌ネジナット４０と螺合しない領域が設けられているため、締付け部３０に径の異なるネジ部が設けられていても、締付け部３０に螺合する雌ネジナット４０を回転させることができる。 In addition, since a region that is not screwed with the female screw nut 40 is provided between the screw portions 34a, 34b, and 34c, even if screw portions having different diameters are provided in the tightening portion 30, the tightening portion 30 is screwed. The mating female screw nut 40 can be rotated.
ここで、雌ネジナット４０の回転によって締付け部３０のネジ部３４ａが設けられた部分が変形すると、図３（Ｂ）に示すように、締付け部３０は、ネジ部３４ａが設けられた先端の位置ａと、逃がし部３６が設けられた両端の位置ｂ、ｃの３点で駆動用ネジ１０を押圧する。すなわち、固定のための力は、駆動用ネジ１０の進行方向と垂直に且つ均等に駆動用ネジ１０に加わることになる。 Here, when the portion of the tightening portion 30 provided with the screw portion 34a is deformed by the rotation of the female screw nut 40, as shown in FIG. 3B, the tightening portion 30 is positioned at the tip end where the screw portion 34a is provided. The drive screw 10 is pressed at three points a and b at both ends where the relief portion 36 is provided. That is, the fixing force is applied to the driving screw 10 perpendicularly and evenly in the traveling direction of the driving screw 10.
このように、本実施形態の固定機構によれば、雌ネジナット４０を回転させて駆動用ネジ１０を固定する際に、駆動用ネジ１０の進行方向に力を加えることなく、駆動用ネジ１０の進行方向と垂直に且つ均等に力を加えることができる。また、固定のための力の力点と作用点が同一軸上にあるために、駆動用ネジ１０を斜めにする力が発生することもない。すなわち、本実施形態の固定機構によれば、駆動用ネジ１０を固定する際に生ずる固定位置のずれを排除して駆動用ネジ１０を正確に固定することができる。 As described above, according to the fixing mechanism of the present embodiment, when the female screw nut 40 is rotated to fix the driving screw 10, the driving screw 10 can be moved without applying a force in the traveling direction of the driving screw 10. Force can be applied perpendicularly and evenly in the direction of travel. Further, since the force point and the action point of the force for fixing are on the same axis, the force that makes the drive screw 10 oblique is not generated. That is, according to the fixing mechanism of the present embodiment, it is possible to accurately fix the driving screw 10 by eliminating the displacement of the fixing position that occurs when the driving screw 10 is fixed.
２．変形例
なお、本発明の適用は上述した実施例に限定されず、種々の変形が可能である。
2. Modifications The application of the present invention is not limited to the above-described embodiments, and various modifications can be made.
例えば、本実施形態では、締付け部３０に設けた３つのネジ部３４ａ、３４ｂ、３４ｃの径Ｒａ、Ｒｂ、Ｒｃの関係をＲａ＞Ｒｂ＝Ｒｃとする場合について説明したが、各ネジ部の径の関係をＲａ＞Ｒｂ＞Ｒｃとしてもよい。 For example, in the present embodiment, the case where the relationship of the diameters Ra, Rb, and Rc of the three screw portions 34a, 34b, and 34c provided in the tightening portion 30 is set as Ra> Rb = Rc is described. The relationship may be Ra> Rb> Rc.
また、本実施形態では、締付け部３０の外径部に３つのネジ部を設ける場合について説明したが、締付け部３０の外径部に径の大きな１つのネジ部と径の小さな２つ以上のネジ部を設けるようにしてもよい。 Further, in the present embodiment, the case where three screw portions are provided on the outer diameter portion of the tightening portion 30 has been described. However, one screw portion having a large diameter and two or more small diameters are provided on the outer diameter portion of the tightening portion 30. A screw portion may be provided.
１０ 駆動用ネジ、１２ ヘッド、２０ 雌ネジブッシュ、３０ 締付け部、３２ スリット、３４ａ ネジ部、３４ｂ ネジ部、３４ｃ ネジ部、３６ 溝、４０ 雌ネジナット、５０ 本体、６０ 可動部材 DESCRIPTION OF SYMBOLS 10 Drive screw, 12 Head, 20 Female screw bush, 30 Tightening part, 32 Slit, 34a Screw part, 34b Screw part, 34c Screw part, 36 Groove, 40 Female screw nut, 50 Main body, 60 Movable member
Claims (4)
前記駆動用ネジに螺合する雌ネジブッシュと、
前記雌ネジブッシュと一部が繋がって形成され、内径部と外径部とにネジ部を有する締付け部と、
前記締付け部に螺合する雌ネジナットとを備え、
前記雌ネジナットを回転させることにより、前記締付け部が、前記駆動用ネジの進行方向と垂直な方向に変形して前記駆動用ネジを締め付けるように構成されたことを特徴とする固定機構。 In the drive screw fixing mechanism,
A female screw bush threadedly engaged with the drive screw;
A tightening portion that is formed by being partly connected to the female screw bush, and has a screw portion at an inner diameter portion and an outer diameter portion,
A female screw nut screwed into the tightening portion,
A fixing mechanism characterized in that, by rotating the female screw nut, the tightening portion is deformed in a direction perpendicular to the advancing direction of the driving screw to tighten the driving screw.
前記締付け部の外径部に、少なくとも３つのネジ部を周方向に間隔を空けて設け、
前記締付け部の前記雌ネジブッシュと繋がっていない部分に、軸方向の全長に渡るスリットと、前記少なくとも３つのネジ部のうち他のネジ部よりも径の大きなネジ部とを設けたことを特徴とする固定機構。 In claim 1,
On the outer diameter part of the tightening part, at least three screw parts are provided at intervals in the circumferential direction,
A portion of the tightening portion that is not connected to the female screw bush is provided with a slit extending over the entire length in the axial direction and a screw portion having a diameter larger than that of the other screw portions among the at least three screw portions. And fixing mechanism.
前記締付け部の内径部に、軸方向の全長に渡る溝を設けたことを特徴とする固定機構。 In claim 2,
A fixing mechanism characterized in that a groove extending over the entire axial length is provided in the inner diameter portion of the tightening portion.
前記雌ネジナットの内径部の形状は、径の大きな部分と径の小さな部分とを有する形状であることを特徴とする固定機構。 In claim 2 or 3,
The shape of the internal diameter part of the said internal thread nut is a shape which has a large diameter part and a small diameter part, The fixing mechanism characterized by the above-mentioned.
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| JP2009189829A JP5325045B2 (en) | 2009-08-19 | 2009-08-19 | Fixing mechanism |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5520776U (en) * | 1978-07-29 | 1980-02-09 | ||
| JP2002021835A (en) * | 2000-07-10 | 2002-01-23 | Sigma Koki Kk | Lock member, space adjusting mechanism, optical equipment and mirror holder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5520776U (en) * | 1978-07-29 | 1980-02-09 | ||
| JP2002021835A (en) * | 2000-07-10 | 2002-01-23 | Sigma Koki Kk | Lock member, space adjusting mechanism, optical equipment and mirror holder |
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