上記目的を達成するために本発明では、次のような手段を用いて課題を解決した。
第一の課題解決手段は、基板の穴に差し込むことによって、この基板に被位置決め物の保持手段を位置決めして着座させる被位置決め物の保持手段の着脱機構であって、
前記着脱機構は、前記保持手段を基端として延設した基軸と、該基軸の延設端から前記保持手段側に向ってＶ字状に延設した一対の抜止片と、この一対の抜止片の延設端からさらに前記保持手段側に向ってそれぞれ延設した位置ずれ防止片と、これら各位置ずれ防止片を起点として前記基軸から離反する方向にそれぞれ延設した解除片とからなり、前記各抜止片には、前記解除片を介して前記基軸側方向に外力を付与した時前記各抜止片の延設基端付近を基点として該基軸側に縮径し、前記外力がない状態では反基軸側に拡径する弾性力を付与し、さらに前記各抜止片の前記基点付近の肉厚は、前記各抜止片を前記基板の穴に差し込みながら左右いずれかに水平回動させた時この穴から前記抜止片が外れるほど変形しない形状寸法にするとともに、前記解除片の延設基端近傍を前記抜止片の縮径力にほぼ影響しない小さな弾性力とすべく弱腰にし、加えて前記位置ずれ防止片を前記保持手段側にさらに延設しこの延設端付近を押圧可能な脱孔補助レバーを前記解除片から延設したことを特徴とする被位置決め物の保持手段の着脱機構を提供する。In order to achieve the above object, the present invention solves the problem by using the following means.
The first problem-solving means is an attachment / detachment mechanism for the positioning means holding means for positioning and positioning the positioning object holding means on the substrate by being inserted into the hole of the substrate,
The attachment / detachment mechanism includes a base shaft extending from the holding means as a base end, a pair of retaining pieces extending in a V shape from the extending end of the base shaft toward the holding means, and the pair of retaining pieces. A misalignment prevention piece extending from the extended end of the position toward the holding means, and a release piece extending in a direction away from the base shaft from each misalignment prevention piece as a starting point. When an external force is applied to each retaining piece via the release piece, the diameter of the retaining piece is reduced toward the proximal side from the vicinity of the extended base end of each retaining piece. An elastic force is provided to expand the diameter toward the base shaft, and the thickness of each retaining piece in the vicinity of the base point is set in this hole when the retaining piece is horizontally rotated to the left or right while being inserted into the hole in the substrate. If the shape does not deform so that the retaining piece is removed from Further, the vicinity of the extended base end of the release piece is weakened so as to be a small elastic force that does not substantially affect the diameter reducing force of the retaining piece, and in addition, the misalignment prevention piece is further extended to the holding means side. Provided is a mechanism for attaching and detaching an object to be positioned, characterized in that a deaeration assist lever capable of pressing the vicinity of the extended end is extended from the release piece.
第三の課題解決手段は第一、第二の課題解決手段に加え、基板の差し込み側の基軸に、この基板の穴よりも大きくこの基板の差し込み側の面に当接する段部を設けた被位置決め物の保持手段の着脱機構を提供する。Third means for solving problems First, in addition to the second means for solving problems, the cornerstone of the insertion side of the substrate, the stepped portion abuts provided plugged Write-side surface of the substrate larger than the hole of the substrate A mechanism for attaching and detaching the holding means for the positioned object is provided.
第一の課題解決手段による作用は次の通りである。
解除片の延設基端近傍を抜止片の縮径力にほぼ影響しない小さな弾性力とすべく弱腰にし、加えて位置ずれ防止片を保持手段側にさらに延設しこの延設端付近を押圧可能な脱孔補助レバーを解除片から延設したことにより、基板の板厚が厚くなった場合、解除片の延設基端近傍を回転支点として解除片は保持手段側に移動する。この際、解除片の延設基端近傍の回転支点は弱腰であること、及び抜止片の縮径力が解除片の位置移動により発生する弾性力よりも大きいため、位置ずれ防止片を介して抜止片へ伝達される力は小さなものになり抜止片はほとんど縮径せず解除片のみが位置移動する作用となる。従って基板の板厚が厚くなってもこの基板の穴から抜止片が抜けることはない。
加えて解除片と一緒に位置移動する脱孔補助レバーの延設端は位置ずれ防止片の延設端に接近するので、解除片を基軸側に縮めるべく外力を付与した際脱孔補助レバーが位置ずれ防止片に当接して、位置ずれ防止片を介して抜止片を縮径させることになり、解除片の延設基端近傍の回転支点は弱腰であっても脱孔補助レバーが効果的に働くことになる。よって簡単に基板の穴から抜止片を抜くことができる。The operation of the first problem solving means is as follows.
Make the area near the extended base end of the release piece weak enough to make it a small elastic force that has almost no effect on the diameter reducing force of the retaining piece, and further extend the position shift prevention piece to the holding means side and press near the extended end When the board thickness of the substrate is increased by extending the possible deaeration assist lever from the release piece, the release piece moves to the holding means side with the vicinity of the extended base end of the release piece as a rotation fulcrum. At this time, the rotation fulcrum in the vicinity of the extended base end of the release piece is weak and the diameter reducing force of the retaining piece is larger than the elastic force generated by the position movement of the release piece. The force transmitted to the retaining piece is small, so that the retaining piece is hardly reduced in diameter and only the release piece moves. Therefore, even if the thickness of the substrate increases, the retaining piece does not come out of the hole in the substrate.
In addition, since the extended end of the de-hole assist lever that moves with the release piece approaches the extended end of the misalignment prevention piece, when the external force is applied to shrink the release piece to the base side, the de-hole assist lever The stopper piece is brought into contact with the misalignment prevention piece and the diameter of the retaining piece is reduced through the misalignment prevention piece. Even if the rotation fulcrum in the vicinity of the extended base end of the release piece is weak, the deaeration assist lever is effective. Will work. Therefore, the retaining piece can be easily removed from the hole in the substrate.
本発明の保持手段の着脱機構の一実施例を示す一部省略した正面図The front view which abbreviate | omitted one part which shows one Example of the attachment / detachment mechanism of the holding means of this invention
図１のバンド状物部分の長手方向軸線での縦断面図で一部を省略しているA part of the band-like part in FIG. 1 is omitted in the longitudinal sectional view along the longitudinal axis.
図１の一部省略した背面図The rear view which abbreviate | omitted one part of FIG.
図２の左側面図Left side view of FIG. 2
本発明の要部の拡大作用説明図Explanatory drawing of the main part of the present invention
本発明の要部の拡大作用説明図Explanatory drawing of the main part of the present invention
本発明の要部の拡大作用説明図Explanatory drawing of the main part of the present invention
本発明の要部の拡大作用説明図Explanatory drawing of the main part of the present invention
本発明の要部の拡大作用説明図Explanatory drawing of the main part of the present invention
本発明の保持手段の着脱機構の他の実施例を示す正面図The front view which shows the other Example of the attachment / detachment mechanism of the holding means of this invention.
従来技術の一例を示す説明図Explanatory drawing showing an example of conventional technology
さらに、各抜止片１２の基点１２ａ付近の肉厚は、基板Ｐの穴Ｈに着脱機構１を差し込みながら左右いずれかに水平回動させた時、この穴Ｈから抜止片１２が外れるほど変形しない形状寸法にしているので、穴Ｈに着脱機構を嵌め込む際穴Ｈが多少きつくても抜止片１２が変形しないため基板からの外れを防止できる。
この基点１２ａ付近の補強は、機構が簡単なことから金型製作が容易で金型故障が少ないことや、成形がし易く品質を安定させることができるとともに歩留まりが良い従来技術の利点を活かすことと相俟って、基板Ｐの板厚が厚くなっても解除片の位置移動による各抜止片１２の縮径作用を防止する効果もある。Further, the thickness of the base 12a in the vicinity of the base 12a of each retaining piece 12 is not deformed so that the retaining piece 12 is removed from the hole H when it is horizontally rotated to the left or right while inserting the detachable mechanism 1 into the hole H of the substrate P. Since the shape and size are set, the retaining piece 12 is not deformed even when the hole H is tightened when the attachment / detachment mechanism is fitted into the hole H, so that the separation from the substrate can be prevented.
The reinforcement in the vicinity of the base point 12a makes use of the advantages of the prior art that the mechanism is simple and the mold is easy to manufacture and that there is little mold failure, that the mold is easy to mold, the quality is stable, and the yield is good. In combination with this, even if the thickness of the substrate P is increased, there is an effect of preventing the diameter reducing action of each retaining piece 12 due to the movement of the position of the release piece.