JP4968724B2

JP4968724B2 - Unlocking device

Info

Publication number: JP4968724B2
Application number: JP2006305875A
Authority: JP
Inventors: 英一渡部
Original assignee: Kokuyo Co Ltd
Current assignee: Kokuyo Co Ltd
Priority date: 2006-11-10
Filing date: 2006-11-10
Publication date: 2012-07-04
Anticipated expiration: 2026-11-10
Also published as: JP2008123228A

Description

本発明は、昇降テーブル等の可動部材が意図せずにロック解除されて動き始めることを有効に防止したロック解除装置に関するものである。 The present invention relates to an unlocking device that effectively prevents a movable member such as a lifting table from being unintentionally unlocked and starting to move.

昇降テーブルなどは、例えば特許文献１等に示されるように、支柱内に組み込んだガススプリングによって天板が昇降駆動可能とされており、そのガススプリングのロック解除ボタンが非操作位置にあるときに天板がロック状態に保持される。そのロック解除ボタンには伝達機構を介して操作レバーが関連づけられており、操作レバーを操作すると、ロック解除ボタンが駆動されて、ガススプリングのガスをリリースし、その結果、天板のロック状態が解除されて、外力を加えずとも天板がガススプリングによって突出する方向に動き出すようになっている。
特開平１０−２１１０２９号公報 For example, as shown in Patent Document 1 or the like, the lifting table can be driven up and down by a gas spring incorporated in a column, and the lock release button of the gas spring is in a non-operation position. The top plate is held in a locked state. An operation lever is associated with the lock release button via a transmission mechanism, and when the operation lever is operated, the lock release button is driven to release the gas spring gas, so that the top plate is locked. After being released, the top plate starts to move in the direction of protruding by the gas spring without applying external force.
Japanese Patent Laid-Open No. 10-211029

しかしながら、かかる従来のものは、操作レバーの移動範囲の全てがロック解除に直接関わる作動範囲となっているため、操作レバーにわずかに触れただけでも昇降機能が作動する。このため、意図せずレバーに操作レバーに触れてしまった場合に、不慮に天板が迫り上って利用者に不快感を与え、天板上の物の転倒或いは落下という不都合も招き易い。同文献では、操作レバーが水平方向へのみ動き下方へ動くことがないようにして足等が接触することが回避できる旨記載されているが、足を組む動作時などには膝で操作レバーを誤って引っ掛けて水平移動させるおそれは否めず、即座にロック解除されて天板が作動する可能性は否定できない。また、操作レバーは天板下の指が触れ易い部位に位置しているため、指が偶然触れた際に意味なく引き寄せられるおそれもあり、誤操作対策の余地は依然として残っている。 However, in such a conventional device, since the entire movement range of the operation lever is an operation range that directly relates to unlocking, the lifting function operates even if the operation lever is slightly touched. For this reason, when the lever is unintentionally touched with the operation lever, the top plate inadvertently moves up and gives the user unpleasantness, and the inconvenience that the object on the top plate falls or falls easily tends to be caused. In this document, it is described that the operation lever can be moved only in the horizontal direction and not moved downward to avoid contact with a foot or the like. There is no denying that there is a risk of accidental hooking and horizontal movement, and there is an undeniable possibility that the top plate will operate immediately after being unlocked. In addition, since the operation lever is located at a position where the finger under the top is easy to touch, there is a possibility that the finger may be drawn meaninglessly when the finger is accidentally touched, and there is still room for countermeasures against erroneous operation.

このような動きを防止するためにレバー操作を規制する安全装置を設け、この安全装置を解除しない限り本来のレバー操作が行えないように構成することも考えられるが、これだと操作が複雑になり操作方法を理解するのに手間取るうえ、動作も煩雑となって使い難いものになる。 In order to prevent such movement, a safety device that restricts the lever operation may be provided so that the original lever operation cannot be performed unless the safety device is released. In addition, it takes time to understand the operation method, and the operation becomes complicated and difficult to use.

本発明は、簡単な構造を通じて上記のような誤操作に善処した新たな構造のロック解除装置を提供することを目的としている。 It is an object of the present invention to provide a lock release device having a new structure that can be remedied by the above-described erroneous operation through a simple structure.

本発明は、かかる目的を達成するために、次のような手段を講じたものである。 In order to achieve this object, the present invention takes the following measures.

すなわち、本発明のロック解除装置は、可動部材が昇降機構によって突出する方向に常時押し付けられており、その昇降機構のロック状態を操作レバーによって解除するためのものであって、操作レバーは、可動部材に設けられて、操作端が可動部材の縁部近傍の裏面に位置する作動終端位置と、当該操作端が前記可動部材の中央側に反転する待機位置との間を操作範囲とし、待機位置で可動部材が昇降機構によってロックされた状態にあるときに可動部材の裏面に向かって弾性的に押し付けられ、その弾性力に抗し反発力を蓄積しながら作動終端位置に向かって操作されるものであり、前記操作範囲が、ロック解除に直接関わる作動範囲と、待機位置から前記作動範囲に至る間に設けられて可動部材のロック状態に影響を及ぼすことなく遊動する遊動範囲とからなるものである。 In other words, the unlocking device of the present invention is such that the movable member is always pressed in the protruding direction by the elevating mechanism, and is used to release the locked state of the elevating mechanism by the operating lever. A standby position provided between the operating end position, which is provided on the member and whose operation end is located on the back surface near the edge of the movable member, and the standby position where the operation end is reversed to the center side of the movable member. When the movable member is locked by the elevating mechanism, it is elastically pressed toward the back surface of the movable member, and is operated toward the operating end position while accumulating repulsive force against the elastic force. , and the said operating range, the operating range directly involved in unlocking, Yu without affecting the locked state of the provided in the movable member while reaching the operating range from the standby position It is made of a floating range.

そして、少なくとも待機位置にある操作レバーの初動時の移動方向と作動範囲に入った後の操作レバーの移動方向とが逆向きとなるように構成して、作動終端位置にあって昇降機構のロック状態を解除している操作レバーの操作端を開放することにより、操作レバーの操作端が前記反発力によって可動部材の中央側の待機位置まで反転して昇降機構をロック状態に復帰させるようにしたことを特徴とする。この場合の逆向きとは、１８０°向きが反転することは必ずしも必要でない。 The moving direction of the operating lever at the initial position of the operating lever at the standby position is opposite to the moving direction of the operating lever after entering the operating range , so that the lifting mechanism is locked at the operating end position. By opening the operating end of the operating lever that has been released, the operating end of the operating lever is reversed to the standby position on the center side of the movable member by the repulsive force, and the lifting mechanism is returned to the locked state . It is characterized by that. In this case, it is not always necessary to reverse the 180 ° direction.

このようにすると、何らかの拍子で操作レバーを引っ掛けても、引っ掛ける方向がほぼ一定であれば操作レバーが逆向きに動くまで引きずられる事はないので、意図的に操作しない限り、誤操作を有効に防止することができ、操作が複雑になったりロック解除機構の構成が煩雑となることも回避することができる。 In this way, even if the operating lever is hooked in any way, if the hooking direction is almost constant, it will not be dragged until the lever moves in the opposite direction, so it is possible to effectively prevent erroneous operation unless it is intentionally operated. It is also possible to avoid complicated operations and complicated lock release mechanisms.

また、本発明の別異の構成からなるロック解除装置は、操作レバーの初動時の移動方向と作動範囲に入った後の移動方向とが逆向きとなるか否かとは別の観点として、遊動範囲を作動範囲と同等ないしそれ以上の広い範囲に亘って設定してなることを特徴とする。 In addition, the unlocking device having a different configuration according to the present invention has an idle movement as a viewpoint different from whether or not the moving direction at the initial movement of the operation lever and the moving direction after entering the operating range are opposite to each other. The range is set over a wide range equal to or more than the operating range.

このように構成すると、何らかの拍子で操作レバーを引っ掛けても、操作レバーの広い遊動範囲の間に引きずり状態が終わる場合があり、またその間に操作レバーを引っ掛けたことに利用者が気づくこともあるので、意図的に操作しない限り、誤操作を有効に防止することができ、操作が複雑になったりロック解除機構の構成が煩雑となることも回避することができる。 With this configuration, even if the operation lever is hooked at some time, the drag state may end during the wide range of movement of the operation lever, and the user may notice that the operation lever has been hooked during that time. Therefore, as long as the operation is not performed intentionally, an erroneous operation can be effectively prevented, and the operation can be prevented from becoming complicated and the structure of the lock release mechanism from being complicated.

勿論、誤操作に的確に対処するためには、これらの構成を同時に備えておくことが望ましい。 Of course, in order to deal with an erroneous operation accurately, it is desirable to have these configurations simultaneously.

本発明の好適な適用対象としては、可動部材はロック解除とともに所定方向に駆動されるように構成されて、その駆動方向と、作動範囲においてロック解除に向かう操作レバーの移動方向とがほぼ合致する構成を有するもの、すなわち遊動範囲が無いとした場合に不具合が顕著となるものが挙げられる。 Suitable application of the present invention, variable rotary members is configured to be driven with the unlocking in a predetermined direction, and a driving direction, the moving direction and almost matches the operating lever toward the unlock the operating range The thing which has the structure which carries out, ie, the thing where a malfunction becomes remarkable when there is no idle range is mentioned.

操作方向が変化する場合や遊動範囲を大きく設定した場合には、上記の利点の反面、意図的に操作しようとしても作動開始位置がわかりに等の課題が残るが、それに備えて、遊動範囲から作動範囲に入った際に操作レバーの操作感が変化するように構成しておくことが望ましい。 If the operation direction changes or the idle range is set large, the above advantage is disadvantageous. It is desirable that the operation feeling of the operation lever changes when the operation range is entered.

本発明の好ましい実施の態様としては、待機位置と作動終端位置とで支軸回りに操作レバーの姿勢が反転するように構成されていて、待機位置から可動部材の裏面に対して垂直となる中間位置を越える範囲に亘って遊動範囲が設定され、漸次可動部材の裏面に近づく範囲に作動範囲が設定されているものが挙げられる。 As a preferred embodiment of the present invention, in the standby position and the work Dotsui end position be configured to position the operating lever to pivot around it is inverted, perpendicular to the back surface of the movable member from the standby position In this case, the idle range is set over a range beyond the intermediate position, and the operating range is gradually set closer to the back surface of the movable member .

誤操作のおそれをより有効に低減するためには、移動範囲が略１８０°の領域に亘って設定され、少なくとも待機位置で操作レバーが可動部材の裏面に密着ないし極接近した状態に保たれるようにしておくことが望ましい。 In order to reduce the possibility of erroneous operation more effectively, the movement range is set over an area of approximately 180 °, and the operation lever is kept in close contact with or in close proximity to the back surface of the movable member at least at the standby position. It is desirable to keep it.

誤って操作レバーに利用者の体の一部が衝突したような場合にフェイルセイフとなる構成を担保するためには、操作レバーが待機位置から遊動範囲に入る方向と可動部材の駆動方向とが逆向きに設定されていることが好ましい。 In order to ensure a fail-safe configuration when a part of the user's body accidentally collides with the operation lever, the direction in which the operation lever enters the idle range from the standby position and the drive direction of the movable member are It is preferable that the direction is reversed.

本発明は、操作レバーが通常使用位置から見えない状態で前記可動部材の裏面に取り付けてある場合に特に有効となる。 The present invention is particularly effective if a state in which operation lever is not visible from the normal position of use is attached to the back surface of the movable member.

具体的には、可動部材が天板であり、天板の縁部近傍の下面に操作レバーが配置されているもの、さらには、天板が昇降機構によって突出する方向に常時押し付けられ、且つ操作レバーの待機位置で昇降機構によって天板がロックされており、操作レバーがその昇降機構のロック状態を解除するように関連づけられているものに適用した場合に顕著な効果を奏する。 Specifically, the movable member is a top plate, an operation lever is disposed on the lower surface near the edge of the top plate, and the top plate is always pressed in the direction in which the top plate protrudes by the lifting mechanism and operated. When the top plate is locked by the elevating mechanism at the standby position of the lever and the operation lever is associated so as to release the locked state of the elevating mechanism, there is a remarkable effect.

本発明のロック解除装置によると、操作レバーが誤って操作された場合に即座にロック装置のロック状態が解除されて可動部材が駆動し始める事態を、構造や操作手順の複雑化を招くことなく有効に解消することができ、これにより利用者が安心して家具の使用ができる環境を有効に整えることが可能となる。 According to the lock release device of the present invention, when the operation lever is operated by mistake, the locked state of the lock device is immediately released and the movable member starts to be driven without complicating the structure or the operation procedure. It is possible to effectively eliminate this, and it becomes possible to effectively prepare an environment in which the user can use the furniture with peace of mind.

以下、本発明の一実施形態を、図面を参照して説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

この実施形態のロック解除装置１は、図１に示す昇降テーブル２を構成する可動部材たる天板２１のロック状態を解除するために用いられるものである。 The lock release device 1 of this embodiment is used for releasing the locked state of the top plate 21 that is a movable member constituting the elevating table 2 shown in FIG.

この昇降テーブル２は、脚羽根２２に支柱２３を介して天板２１を取り付けたもので、天板２１は支柱２３内に組み込んだ昇降機構たるガススプリング２４によって昇降駆動可能とされ、通常の天板と同様である７００ｍｍの天板高さから、ハイカウンターチェアと併用可能な９００ｍｍの天板高さ、更に立ち位置で利用する１０５０ｍｍの天板高さまで、広いストロークに亘って昇降し得るものである。 This elevating table 2 is obtained by attaching a top plate 21 to a leg blade 22 via a column 23, and the top plate 21 can be driven up and down by a gas spring 24 as an elevating mechanism incorporated in the column 23, so It is possible to move up and down over a wide stroke from a top plate height of 700 mm, which is the same as the plate, to a top plate height of 900 mm that can be used with a high counter chair, and a top plate height of 1050 mm that is used in a standing position. is there.

そのガススプリング２４は、図２（ａ）に示すように、ガスをリリースしてロック解除を行うためのロック解除ボタン２４ａを有し、ロック解除ボタン２４ａが突出した非操作位置にあるときに天板２１をロック状態に保ち、同図（ｂ）に示すようにロック解除ボタン２４ａが押し込まれて操作位置に移動したときにガススプリング２４のガスをリリースしつつ、天板２１に突出方向への駆動力を付与し、負荷が無い場合ないし少ない場合に天板２１を上動させるものである。 As shown in FIG. 2 (a), the gas spring 24 has an unlock button 24a for releasing the lock by releasing the gas, and when the unlock button 24a is in the protruding non-operating position, The plate 21 is kept in a locked state, and when the lock release button 24a is pushed and moved to the operation position as shown in FIG. A driving force is applied, and the top plate 21 is moved up when there is no or little load.

このような昇降テーブル２において、この実施形態のロック解除装置１は、図２に示すロック解除ボタン２４ａを作動させる位置に操作部材１１を配置して、この操作部材１１に、図１及び図３に示すようにワイヤチューブ式の伝達機構１２を介して回転式の操作レバー１３を関連づけている。 In such a lifting table 2, the unlocking device 1 of this embodiment has the operating member 11 disposed at a position where the unlocking button 24a shown in FIG. As shown in FIG. 4, a rotary operation lever 13 is associated with the wire tube type transmission mechanism 12.

操作レバー１３は、天板２１の高さ調整のために用いられるもので、図３〜図５に示すように、天板２１の縁部２１ａ近傍の下面２１ｂに支軸１３ａを介して把手部１３ｘの基端を回転可能に取り付けている。そして、その支軸１３ａから変位した位置に伝達機構１２を構成するワイヤ１２ａの一端部１２ａ１を把手部１３ｘとともに一体回転し得るように保持させている。伝達機構１２のチューブ１２ｂは、天板下面２１ｂに設けたチューブ保持部１２ｃと、図２に示す操作部材１１の近傍に設けたチューブ保持部１２ｄとの間に引き回され、ワイヤ１２ａはこのチューブ１２ｂ内を通過して一端部１２ａ１が前述した操作レバー１３に接続され、他端部１２ａ２がロック解除ボタン２４ａの近傍に設けた操作部材１１に接続してある。この操作部材１１は、図示例では軸心ｍの回りに回転可能とされ、ワイヤ１２ａに操作力が加わらない状態ではロック解除ボタン２４ａを押し込まない位置に保持されている。そして、ワイヤ１２ａが牽引操作されると、軸心ｍの回りに回転して図２(ｂ)に示すようにロック解除ボタン２４ａを押し込むようになっている。勿論、図２は原理図であって、実際には種々の構造を採用することができる。 The operation lever 13 is used for adjusting the height of the top plate 21, and as shown in FIGS. 3 to 5, a grip portion is provided on a lower surface 21b in the vicinity of the edge portion 21a of the top plate 21 via a support shaft 13a. The base end of 13x is rotatably attached. And the one end part 12a1 of the wire 12a which comprises the transmission mechanism 12 is hold | maintained at the position displaced from the spindle 13a so that it can rotate integrally with the handle part 13x. The tube 12b of the transmission mechanism 12 is drawn between a tube holding portion 12c provided on the top plate lower surface 21b and a tube holding portion 12d provided in the vicinity of the operation member 11 shown in FIG. One end portion 12a1 passes through the inside of 12b and is connected to the operation lever 13 described above, and the other end portion 12a2 is connected to the operation member 11 provided in the vicinity of the lock release button 24a. In the illustrated example, the operation member 11 is rotatable around the axis m, and is held at a position where the lock release button 24a is not pushed in when no operation force is applied to the wire 12a. When the wire 12a is pulled, the wire 12a rotates about the axis m and pushes the lock release button 24a as shown in FIG. 2 (b). Of course, FIG. 2 is a principle diagram, and various structures can be adopted in practice.

そして、この場合の操作レバー１３の移動範囲と、前述した操作部材１１の動きとを、次のように関連づけている。 In this case, the movement range of the operation lever 13 and the movement of the operation member 11 described above are associated as follows.

すなわち、この実施形態の操作レバー１３は、図６に示すように、裏面である天板下面２１ｂに略１８０°の移動範囲に亘って回転可能に取り付けられおり、天板２１の縁部２１ａから遠い側に設定した待機位置１３（Ａ）では操作レバー１３の把手部１３ｘが天板下面に密着し、そこから天板下面２１ｂに対して把手部１３ｘが垂直となる中間位置１３（Ｂ）を経た後、反転して天板２１の縁部２１ａに近い側に倒れ込む作動終端位置１３（Ｄ）に向かうようになっている。そして、その移動範囲のうち、待機位置１３（Ａ）から上記中間姿勢１３（Ｂ）を越えてある程度回転した切替位置１３（Ｃ）までをワイヤ１２ａを牽引しない遊動範囲Ｚ１（待機位置１３（Ａ）から１３０°〜１５０°の範囲）に設定し、これ以降の回転領範囲（残り３０°〜５０°）を実質的にワイヤ１２ａを牽引してロック解除を行うための作動範囲Ｚ２に設定している。操作レバー１３には図５に示すように戻りバネ１３ｃが組み込まれて、待機位置１３（Ａ）に向かって常時弾性力が働くようにしてあり、操作時には操作レバー１３は戻りバネ１３ｃに反発力を蓄積しながら作動範囲１３（Ｃ）に向かって移動する。 That is, as shown in FIG. 6, the operation lever 13 of this embodiment is attached to the top plate lower surface 21 b which is the back surface so as to be rotatable over a movement range of about 180 °, and from the edge portion 21 a of the top plate 21. At the standby position 13 (A) set on the far side, the handle portion 13x of the operation lever 13 is in close contact with the lower surface of the top plate, and from there the intermediate position 13 (B) where the handle portion 13x is perpendicular to the top plate lower surface 21b. After passing, it turns to the operation | movement termination position 13 (D) which inverts and falls to the side near the edge 21a of the top plate 21. As shown in FIG. Of the movement range, the idle range Z1 (standby position 13 (A) where the wire 12a is not pulled from the standby position 13 (A) to the switching position 13 (C) rotated to some extent beyond the intermediate posture 13 (B). ) To 130 ° to 150 °), and the subsequent rotation range (remaining 30 ° to 50 °) is set to an operation range Z2 for substantially unlocking the wire 12a. ing. As shown in FIG. 5, a return spring 13c is incorporated in the operation lever 13 so that an elastic force always acts toward the standby position 13 (A). During operation, the operation lever 13 repels the return spring 13c. Move toward the operating range 13 (C).

上記の操作レバー１３と操作部材１１との具体的な関連づけとしては、待機位置１３（Ａ）を含み遊動範囲Ｚ１の間は図７（ａ）に示すようにワイヤ１２ａが弛み、作動範囲Ｚ２に入った段階で同図（ｂ）のようにワイヤ１２ａが緊張して操作部材１１に操作レバー１３の操作力が伝達されるように構成する態様が挙げられる。この場合、操作部材１１はワイヤ１２ａが緊張した直後にガススプリング２４のロック解除ボタン２４ａを押し込む位置にオフセットバネ等により待機させておく。ワイヤ１２ａの一端１２ａ１は操作レバー１３に対して、図４及び図５に示したように常に一体回転する態様で接続する以外に、図示しないが操作レバー１３が作動位置Ｚ２に入る手前でワイヤ１２ａの一端１２ａ１をすくい上げるように構成しても構わない。また、他の操作レバー１３と操作部材１１との具体的な関連づけとしては、例えば図８（ａ）のように常時ワイヤ１２ａが緊張状態で操作部材１１に操作レバー１３の操作力が伝わる構成にして、操作レバー１３が待機位置１３（Ａ）から遊動範囲Ｚ１に至る間は操作部材１１がロック解除ボタン２４ａから離反させて、操作レバー１３が作動範囲Ｚ２に入った時点で同図（ｂ）のようにガススプリング２４のロック解除ボタン２４ａを押し込み始めるように設定する態様も可能である。この場合、操作部材１１にロック解除ボタン２４ａから離れる方向に押し付け力を作用させるバネを組み込むようにし、操作レバー１３側の戻りバネは不要にすることもできる。 Specifically, the operation lever 13 and the operation member 11 are associated with each other as shown in FIG. 7 (a), including the standby position 13 (A), and the wire 12a is slackened in the operation range Z2. An example of the configuration is that the wire 12a is tensioned and the operation force of the operation lever 13 is transmitted to the operation member 11 as shown in FIG. In this case, the operation member 11 is made to wait by an offset spring or the like at a position where the lock release button 24a of the gas spring 24 is pushed immediately after the wire 12a is tensioned. One end 12a1 of the wire 12a is connected to the operating lever 13 in such a manner that it always rotates integrally as shown in FIGS. 4 and 5. Although not shown, the wire 12a is just before the operating lever 13 enters the operating position Z2. The one end 12a1 may be scooped up. Further, as a specific association between the other operation lever 13 and the operation member 11, for example, as shown in FIG. 8A, the operation force of the operation lever 13 is transmitted to the operation member 11 while the wire 12a is always in tension. When the operating lever 13 reaches the idle range Z1 from the standby position 13 (A), the operating member 11 moves away from the lock release button 24a, and when the operating lever 13 enters the operating range Z2 (b) in FIG. A mode in which the lock release button 24a of the gas spring 24 is started to be pushed is also possible. In this case, a spring that applies a pressing force to the operation member 11 in a direction away from the lock release button 24a may be incorporated, and a return spring on the operation lever 13 side may be unnecessary.

何れにせよ、このロック解除装置は、操作レバー１３の操作範囲が、ロック解除に直接関わる作動範囲Ｚ２と、待機位置１３（Ａ）から作動範囲Ｚ２に至る間に設けられて天板２１のロック状態に影響を及ぼすことなく遊動する遊動範囲Ｚ１とから構成されている。そして、利用者がロック解除操作を行う際は、天板２１の下に手を伸ばして操作レバー１３の把手１３ｘに指を掛け、支軸１３ａよりも奥方に位置するこの把手１３ｘを支軸１３ａよりも手前側にまで回転させて、最後の作動範囲Ｚ２で天板２１の縁部２１ａに近づいた把手１３ｘを、天板２１に親指を掛け他の指で更に引き上げる操作等を行うことにより、天板２１をロック解除してガススプリング２４による高位置への位置調整、或いは体重を掛けて押し込むことによる低位置への位置調整を行うことができる。 In any case, the unlocking device is provided between the operating range Z2 directly related to unlocking the operating range of the operating lever 13 and the operating range Z2 from the standby position 13 (A) to lock the top plate 21. It is comprised from the idle range Z1 which idles without affecting a state. When the user performs the unlocking operation, the user extends his hand under the top plate 21, puts his finger on the handle 13x of the operation lever 13, and moves the handle 13x located behind the support shaft 13a to the support shaft 13a. By rotating the handle 13x closer to the edge 21a of the top plate 21 in the final operating range Z2 by rotating the handle 13x to the near side, the thumb 21 is put on the top plate 21 and further pulled up with other fingers, etc. The top plate 21 can be unlocked and the gas spring 24 can be used to adjust the position to a high position, or the weight can be adjusted and the position can be adjusted to a low position by pushing the weight.

そして、このロック解除装置１は、少なくとも待機位置１３（Ａ）にある操作レバー１３の初動時の移動方向（図６における矢印ｘ１参照）と作動範囲Ｚ２に入った後の操作レバー１３の移動方向（矢印ｘ２参照）とが逆向きとなるので、待機位置１３（Ａ）にある操作レバー１３を一旦作動範囲Ｚ２まで意図的に持ち出さない限りロック解除されることがない。これは、待機位置１３（Ａ）で操作レバー１３には初動時の移動方向と逆向きにしか力が掛かっていないためであって、操作レバー１３は天板２１の下面に密着した状態にあって利用者が操作レバー１３を引っ掛けにくいのに加えて、何らかの拍子で仮に利用者が操作レバー１３を引っ掛けたとしても、引っ掛ける方向が例えば図中ｘ３のようにほぼ一定であれば操作レバー１３が逆向きに動くまで引きずられる事はないので、誤操作をかかる操作レバー１３の広い範囲に亘る回転動作を利用して有効に防止することができ、そのために操作が複雑になったりロック解除機構の構成が煩雑となることも回避することができる。 The unlocking device 1 includes at least a moving direction of the operating lever 13 at the standby position 13 (A) at the initial movement (see an arrow x1 in FIG. 6) and a moving direction of the operating lever 13 after entering the operating range Z2. Since the direction is opposite (see arrow x2), the operation lever 13 at the standby position 13 (A) is not unlocked unless it is intentionally taken to the operating range Z2. This is because a force is applied only to the operation lever 13 in the opposite direction to the moving direction at the initial movement at the standby position 13 (A), and the operation lever 13 is in close contact with the lower surface of the top plate 21. In addition to the fact that the user is difficult to hook the operating lever 13, even if the user hooks the operating lever 13 at any time, the operating lever 13 will not move if the hooking direction is substantially constant, for example, x3 in the figure. Since it is not dragged until it moves in the opposite direction, it is possible to effectively prevent an erroneous operation by using the rotation of the operation lever 13 over a wide range, which makes the operation complicated and the structure of the unlocking mechanism. Can be avoided.

加えて、遊動範囲Ｚ１が１３０°〜１５０°に設定され、作動範囲Ｚ２である３０°〜５０°に比して遙かに広範囲に亘るので、何らかの拍子で操作レバー１３を引っ掛けたとしても、操作レバー１３の広い遊動範囲Ｚ１の間に引きずり状態が終わる場合があり、またその間に利用者が操作レバー１３を引っ掛けたことに気づくこともあるので、意図的な操作以外で誤操作が生じて天板２１が作動する可能性をここでも操作レバー１３の広い範囲に亘る回転動作を利用してより有効に低減することができ、そのために操作が複雑になったりロック解除機構の構成が煩雑となることも回避することができる。 In addition, since the floating range Z1 is set to 130 ° to 150 ° and is far wider than the operating range Z2 of 30 ° to 50 °, even if the operation lever 13 is hooked with any beat, Since the drag state may end during the wide play range Z1 of the operation lever 13 and the user may notice that the operation lever 13 has been hooked during that time, an erroneous operation other than the intentional operation may occur. Here again, the possibility that the plate 21 is activated can be more effectively reduced by utilizing the rotation of the operation lever 13 over a wide range, which makes the operation complicated and the structure of the lock release mechanism complicated. This can also be avoided.

特に、操作レバー１３が可動部材である天板２１に設けられ、天板２１はロック解除とともに所定方向である上方へ駆動されるように構成されていて、その駆動方向（図６における矢印ｘ４参照）と、作動範囲Ｚ２においてロック解除に向かう操作レバー１３の移動方向（矢印ｘ２）とがほぼ合致するものであるので、仮に遊動範囲Ｚ１が無い場合だと操作レバー１３に加わる不慮の外力で瞬時にロック解除され、引き続きその外力が天板２１を押し上げる力として作用して好ましくないところ、本実施形態の遊動範囲Ｚ１を設けることによってこのようなロック解除→天板２１の上動という一連の連鎖が起こることを有効に防止することができる。 In particular, the operation lever 13 is provided on a top plate 21 that is a movable member, and the top plate 21 is configured to be driven upward in a predetermined direction along with unlocking, and the drive direction (see arrow x4 in FIG. 6). ) And the moving direction (arrow x2) of the operating lever 13 toward the unlocking in the operating range Z2 substantially coincide with each other, so if there is no idle range Z1, the unexpected external force applied to the operating lever 13 is instantaneous. However, it is not preferable because the external force continues to act as a force for pushing up the top plate 21. By providing the free range Z1 of the present embodiment, a series of chains such as unlocking → upward movement of the top plate 21 is performed. Can be effectively prevented from occurring.

また、遊動範囲Ｚ１から作動範囲Ｚ２に入ると、操作部材１１をバネ力に抗して移動させるための力や、ガススプリング２４のロック解除ボタン２４ａに対する押し込み反力が操作レバー１３に加わり、操作レバー１３の操作感が変化するので、操作レバー１３の操作方向や操作位置が刻々変化し、しかも遊動範囲が本実施形態のように大きくとってある場合にも、作動開始位置がわかりにくいという不具合を解消して、安心して確実に操作できる環境を整えることができる。 Further, when the operation range Z2 is entered from the free range Z1, a force for moving the operation member 11 against the spring force and a pushing reaction force against the lock release button 24a of the gas spring 24 are applied to the operation lever 13, and the operation lever 13 is operated. Since the operating feeling of the lever 13 changes, the operating start position and the operating position of the operating lever 13 change every moment, and even when the idle range is large as in this embodiment, the operation start position is difficult to understand. It is possible to eliminate the problem and to create an environment that can be operated with confidence and reliability.

さらに、この実施形態では操作レバー１３が天板下面２１ｂに回転可能に取り付けられ、待機位置１３（Ａ）と作動終端位置１３（Ｄ）とで支軸１３ａ回りに操作レバー１３の姿勢が反転するように構成されていて、待機位置１３（Ａ）から天板下面２１ｂに対して垂直となる中間位置１３（Ｂ）を越える範囲に亘って遊動範囲Ｚ１が設定され、漸次天板２１に近づく範囲に作動範囲Ｚ２が設定されているので、操作レバー１３の操作性が回転動作を通じて円滑なものになり、しかも初動時と作動開始時とで操作方向ｘ１，ｘ２が異なる構成および遊動範囲Ｚ１を作動範囲Ｚ２よりも大きく設定する構成を操作レバー１３の一連の回転動作の中で好適に両立させることができる。 Further, the operating lever 13 in this embodiment is rotatably attached to the top plate lower surface 21b, the posture of the standby position 13 (A) and work Dotsui end position 13 (D) and de shaft 13a around the operating lever 13 is The floating range Z1 is set over a range exceeding the intermediate position 13 (B) perpendicular to the top plate lower surface 21b from the standby position 13 (A). Since the operation range Z2 is set in the approaching range, the operability of the operation lever 13 becomes smooth through the rotation operation, and the operation directions x1 and x2 are different between the initial operation and the operation start, and the idle range Z1. Is configured to be larger than the operating range Z2 in the series of rotations of the operating lever 13 in a suitable manner.

また、移動範囲が略１８０°の領域に亘って設定され、少なくとも待機位置１３（Ａ）で操作レバー１３が天板下面２１ｂに密着ないし極接近した状態に保たれるようにしており、待機位置１３（Ａ）にある操作レバー１３を意図的に天板下面２１ｂから引き離す方向に操作しない限り始動しないので、誤操作のおそれがより有効に低減されるものとなる。 In addition, the movement range is set over a region of approximately 180 °, and the operation lever 13 is kept in close contact with or in close proximity to the top plate lower surface 21b at least at the standby position 13 (A). Since it does not start unless the operation lever 13 in 13 (A) is intentionally operated in the direction of separating from the top plate lower surface 21b, the risk of erroneous operation is more effectively reduced.

さらにまた、操作レバー１３が待機位置１３（Ａ）から遊動範囲Ｚ１に入る方向ｘ１と天板１１がガススプリング２４により駆動される方向ｘ４とが逆向きに設定されているため、誤って操作レバー１３が例えば利用者の膝等によって蹴り上げられたような場合にも、操作レバー１３のロック解除方向とは反対方向であるため、ロック解除とともに天板１１が勢い良く駆動される事態を確実に防止することができ、フェイルセーフとなる構成を有効に担保することができる。 Furthermore, since the direction x1 in which the operating lever 13 enters the idle range Z1 from the standby position 13 (A) and the direction x4 in which the top plate 11 is driven by the gas spring 24 are set in opposite directions, the operating lever is erroneously set. Even when 13 is kicked up by, for example, a user's knee, the operation lever 13 is in the opposite direction to the unlocking direction. This can be prevented, and a fail-safe configuration can be effectively secured.

加えて、操作レバー１３は待機位置１３（Ａ）で天板下面２１ａに向かって弾性的に押し付けられ、その弾性力に抗し反発力を蓄積しながら作動範囲ｘ２に向かって操作されるので、操作レバー１３の非操作時における待機状態を確実ならしめることができる。 In addition, the operating lever 13 is elastically pressed toward the top plate lower surface 21a at the standby position 13 (A), and is operated toward the operating range x2 while accumulating repulsive force against the elastic force. The standby state when the operation lever 13 is not operated can be ensured.

以上に加えて、昇降テーブル２の天板２の裏面である天板下面２１ｂに対し、操作レバー１３が通常使用位置から見えない状態で天板下面２１ｂに取り付けてあり、通常なら操作レバー１３が見えない位置にあることで誤操作につながり易い不具合を、本実施形態により有効に解消することが可能となる。 In addition to the above, against the top plate lower surface 21b is a rear surface of the top plate 2 for the temperature descending table 2, the operation lever 13 is attached to the top plate lower surface 21b in a state invisible from the normal use position, usually if the operating lever 13 This embodiment makes it possible to effectively solve a problem that is likely to lead to an erroneous operation due to being in a position where cannot be seen.

以上のように、このロック解除装置１によれば、利用者が足を組むなどの動作時に誤って膝で操作レバー１３を蹴り上げたり、指が偶然触れて意味なく引き寄せられたような場合にも、誤操作につながるおそれを効果的に低減することが可能となる。 As described above, according to the lock release device 1, when the user accidentally kicks up the operation lever 13 with his knee or moves his / her finger, or when the finger is accidentally touched and pulled in meaninglessly, In addition, it is possible to effectively reduce the possibility of erroneous operation.

特に、天板２１はガススプリング２４によって突出する方向に常時押し付けられ、且つ操作レバー１３の待機位置１３（Ａ）でガススプリング２４によって天板２１がロックされており、操作レバー１３がそのガススプリング２４のロック状態を解除するように関連づけられているので、誤操作により不慮に天板２１が迫り上って利用者に不快感を与え、天板２１上の物が転倒或いは落下するという不都合を確実に防止し得るものとなり得る。 In particular, the top plate 21 is always pressed in the protruding direction by the gas spring 24, and the top plate 21 is locked by the gas spring 24 at the standby position 13 (A) of the operation lever 13. 24 is related to release the locked state, so that it is possible to inconvenience the user by causing the top plate 21 to accidentally move up and cause discomfort to the user, and to prevent the object on the top plate 21 from falling or falling. Can be prevented.

なお、各部の具体的な構成は、上述した実施形態のみに限定されるものではなく、
本発明の趣旨を逸脱しない範囲で種々変形が可能である。 The specific configuration of each unit is not limited to the above-described embodiment,
Various modifications can be made without departing from the spirit of the present invention.

例えば、図９に示すように可動部材が大型天板１２１であり、２本の支柱１２３によって昇降可能に支持され、その昇降動作が支柱１２３に組み込んだ図示しないガススプリング及び両支柱１２３，１２３間に介在させた図示しない同期機構によって実現されるようにしている場合には、共通の操作レバー１１３を両支柱１２３から等距離にある天板下面に設け、この操作レバー１１３から並列的な伝達機構１００を介して操作力をガススプリングに付帯して設けた図示しないロック解除用の操作部材に伝達するように構成すればよい。そして、その際の操作レバー１１３の移動範囲が本発明の遊動範囲及び作動範囲からなるように上記実施形態に準じて操作レバー１１３と操作部材とを関連づければ、上記実施形態と同様の作用効果が奏される。 For example, as shown in FIG. 9, the movable member is a large top plate 121, supported by two columns 123 so as to be movable up and down, and the lifting operation is incorporated in the column 123 and a gas spring (not shown) between the columns 123 and 123. When a common operation lever 113 is provided on the lower surface of the top plate that is equidistant from both columns 123, a parallel transmission mechanism is provided from the operation lever 113. What is necessary is just to comprise so that operating force may be transmitted via 100 via the operation member for unlocking which is not shown provided attached to the gas spring. Then, if the operation lever 113 and the operation member are associated according to the above-described embodiment so that the movement range of the operation lever 113 at that time is the floating range and the operation range of the present invention, the same effects as the above-described embodiment. Is played.

また、図１０に示すように可動部材がフラップ天板２２１であり、ロック解除されればフラップ天板２２１が跳ね上がるようなものである場合にも、そのロック解除装置を構成する操作レバー２１３を上記実施形態に準じて遊動範囲が含まれるように関連づければ、操作レバー２１３に対する誤った操作によりフラップ天板２２１がいきおい跳ね上がって利用者に不快感を与えることを有効に防止することができる。 In addition, even when the movable member is the flap top plate 221 as shown in FIG. 10 and the flap top plate 221 jumps up when unlocked, the operation lever 213 constituting the lock release device is moved to the above. If it associates so that a floating range may be included according to embodiment, it can prevent effectively that the flap top plate 221 jumps up suddenly by the incorrect operation with respect to the operation lever 213, and gives a user discomfort.

さらに、図１１に示すように可動部材である椅子の座３２１を昇降するガススプリングに関しても、座３２１の下面を基準面として上記と同様に遊動範囲を設定した操作レバー３１３を設ければ、操作レバー３１３に対する誤った操作により座３２１が不慮に突出して利用者に不快感を与えることを効果的に防止することが可能となる。 Further, as shown in FIG. 11, the gas spring for moving up and down the chair seat 321 as a movable member can be operated by providing an operation lever 313 having a free range as described above with the lower surface of the seat 321 as a reference plane. It is possible to effectively prevent the seat 321 from inadvertently protruding due to an erroneous operation on the lever 313 and causing discomfort to the user.

本発明の一実施形態を適用した昇降テーブルの斜視図。The perspective view of the raising / lowering table to which one Embodiment of this invention is applied. 同昇降テーブルを構成するガススプリング部分の原理図。The principle figure of the gas spring part which comprises the raising / lowering table. 図１の昇降テーブルの天板下面を下方から見た斜視図。The perspective view which looked at the lower surface of the top plate of the lifting table of FIG. 1 from the lower side. 同実施形態の操作レバー付近を示す側面図。The side view which shows the operation lever vicinity of the embodiment. 図４に対応した底面図。The bottom view corresponding to FIG. 同実施形態の操作レバーの遊動範囲と作動範囲の関係を説明する図。The figure explaining the relationship between the idle range of the operation lever of this embodiment, and an operating range. 同実施形態の操作レバーとガススプリング近傍に配置した操作部材との関連づけを示す図。The figure which shows correlation with the operation member arrange | positioned in the vicinity of the operation lever and gas spring of the embodiment. 同実施形態の操作レバーとガススプリング近傍に配置した操作部材との関連づけを示す図。The figure which shows correlation with the operation member arrange | positioned in the vicinity of the operation lever and gas spring of the embodiment. 本発明の他の適用例を示す図。The figure which shows the other example of application of this invention. 本発明の他の適用例を示す図。The figure which shows the other example of application of this invention. 本発明の他の適用例を示す図。The figure which shows the other example of application of this invention.

１…ロック解除装置
２…家具（昇降テーブル）
１３…操作レバー
１３（Ａ）…待機位置
１３（Ｄ）…終端位置
１３（Ｂ）…中間位置
２１…可動部材（天板）
２１ｂ…裏面（天板下面）
２４…昇降機構（ガススプリング）
Ｚ１…遊動範囲
Ｚ２…作動範囲

1 ... Unlocking device 2 ... Furniture (lifting table)
DESCRIPTION OF SYMBOLS 13 ... Control lever 13 (A) ... Standby position 13 (D) ... End position 13 (B) ... Intermediate position 21 ... Movable member (top plate)
21b ... back surface (top plate lower surface)
24 ... Elevating mechanism (gas spring)
Z1 ... idle range Z2 ... operating range

Claims

The movable member is constantly pressed in the direction protruding by the lifting mechanism, and is for releasing the locked state of the lifting mechanism by the operation lever,
The operation lever is provided on the movable member and operates between an operation end position where the operation end is located on the back surface near the edge of the movable member and a standby position where the operation end is reversed to the center side of the movable member. When the movable member is locked by the elevating mechanism at the standby position, the movable member is elastically pressed toward the back surface of the movable member and moves toward the operation end position while accumulating repulsive force against the elastic force. Is operated,
The operation range includes an operation range that is directly related to unlocking, and an idle range that is provided between the standby position and the operation range so as to move without affecting the locked state of the movable member. It is configured so that the moving direction of the operating lever at the initial movement and the moving direction of the operating lever after entering the operating range are opposite to each other, and the locked state of the lifting mechanism is released at the operating end position. By opening the operation end of the operation lever, the operation end of the operation lever is reversed to the standby position on the center side of the movable member by the repulsive force and the lifting mechanism is returned to the locked state. Release device.

The movable member is constantly pressed in the direction protruding by the lifting mechanism, and is for releasing the locked state of the lifting mechanism by the operation lever,
The operation lever is provided on the movable member and operates between an operation end position where the operation end is located on the back surface near the edge of the movable member and a standby position where the operation end is reversed to the center side of the movable member. When the movable member is locked by the elevating mechanism at the standby position, the movable member is elastically pressed toward the back surface of the movable member and moves toward the operation end position while accumulating repulsive force against the elastic force. Is operated,
The operation range includes an operation range directly related to unlocking and an idle range provided between the standby position and the operation range so as to move without affecting the locked state of the movable member. By setting the operating range over a wide range equal to or greater than the operating range, and opening the operating end of the operating lever that is in the operating end position and unlocking the lifting mechanism, the operating end of the operating lever is An unlocking device characterized in that the lifting mechanism is returned to the locked state by reversing to the standby position on the center side of the movable member by the repulsive force .

The movable member is constantly pressed in the direction protruding by the lifting mechanism, and is for releasing the locked state of the lifting mechanism by the operation lever,
The operation lever is provided on the movable member and operates between an operation end position where the operation end is located on the back surface near the edge of the movable member and a standby position where the operation end is reversed to the center side of the movable member. When the movable member is locked by the elevating mechanism at the standby position, the movable member is elastically pressed toward the back surface of the movable member and moves toward the operation end position while accumulating repulsive force against the elastic force. Is operated,
The operation range includes an operation range that is directly related to unlocking, and an idle range that is provided between the standby position and the operation range so as to move without affecting the locked state of the movable member. It is constructed so that the moving direction at the initial movement of a certain operating lever is opposite to the moving direction of the operating lever after entering the operating range, and the free range is equal to or larger than the operating range. By setting and releasing the operation end of the operation lever that is in the operation end position and unlocking the lifting mechanism, the operation end of the operation lever is moved to the standby position on the center side of the movable member by the repulsive force. An unlocking device characterized in that it reverses and returns the lifting mechanism to the locked state .

Yes moving member is constructed to be driven in a predetermined direction together with the lock release, the claims and the driving direction, the moving direction of the operation lever toward the unlock the operating range is configured substantially to conform The lock release apparatus in any one of 1-3.

The lock release device according to any one of claims 1 to 4 , wherein the operation feeling of the operation lever changes when the operation range is entered from the idle range.

In the standby position and the work Dotsui end position be configured to position the operating lever to pivot around is reversed, over a range exceeding the intermediate position is perpendicular to the back surface of the movable member from the standby position The unlocking device according to any one of claims 1 to 5, wherein an idle range is set and an operation range is set in a range gradually approaching the back surface of the movable member .

7. The lock release device according to claim 6, wherein the movement range is set over a region of about 180 °, and the operation lever is kept in close contact with or in close proximity to the back surface of the movable member at least at the standby position.

The lock release device according to claim 6 or 7, wherein a direction in which the operation lever enters the idle range from the standby position and a drive direction of the movable member are set in opposite directions.

Unlocking device according to claim 6-8 in a state in which operation lever is not visible from the normal position of use is attached to the back surface of the movable member.

The lock release device according to claim 9 , wherein the movable member is a top plate, and an operation lever is disposed on a lower surface in the vicinity of the edge of the top plate.

The top plate is always pressed in the protruding direction by the elevating mechanism, and the top plate is locked by the elevating mechanism at the standby position of the operation lever, and the operation lever is related to release the locked state of the elevating mechanism. The unlocking device according to claim 10 .