JP4827474B2 - Lifting device, wagon with lifting table - Google Patents
Lifting device, wagon with lifting table Download PDFInfo
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- JP4827474B2 JP4827474B2 JP2005268886A JP2005268886A JP4827474B2 JP 4827474 B2 JP4827474 B2 JP 4827474B2 JP 2005268886 A JP2005268886 A JP 2005268886A JP 2005268886 A JP2005268886 A JP 2005268886A JP 4827474 B2 JP4827474 B2 JP 4827474B2
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Description
本発明は、筐体等の家具本体に対して昇降天板等の家具構成部材を昇降させ得る昇降装置、及び昇降装置を具備した昇降天板付ワゴンに関するものである。 The present invention relates to a lifting device that can lift and lower furniture components such as a lifting table with respect to a furniture body such as a housing, and a wagon with a lifting table that includes the lifting device.
従来より、筐体と、筐体の上面部側に設けられ且つ筐体に対して高さ位置を調整可能な昇降天板とを具備してなる天板付ワゴンに適用される昇降装置として、例えば下記特許文献1に示すように、筐体に設けた静止部材に、複数の歯部を外周に形成したラチェット(第1噛合部に相当)と、ラチェットに噛合する方向に付勢された駒片(第2噛合部に相当)とを設け、所定の操作力の付与又は停止に連動して昇降移動する連動部材の動作によって駒片を、ラチェットに係合可能な噛合可能位置と、係合状態を解除する係合解除位置との間で進退移動させてラチェットに選択的に係合させるようにしたものが知られている。
しかしながら、このような従来の昇降装置は、駒片を係合可能位置に位置付けた場合、駒片の先端部に設けた単一の爪(歯部)が、回動するラチェットに設けた複数の歯部のうち単一の歯部にのみ係合する態様、つまり、単一の歯部同士のみを係合させている態様であり、このような単一の歯部同士の係合であっても係合状態が容易に解除されないように、係合深さを在る程度深く設定している。そのため、ラチェットの歯部のピッチをある程度大きく(例えば数十mm単位)設定せざるを得ず、結果的に、昇降天板の高さ調整もラチェットの歯部の間隔に対応するピッチ(数十mm単位)でのみしか行うことができなくなり、併設する机の天板の高さ位置と略面一となるように、昇降天板の高さ位置を数mm単位で微調整することができないという不具合が生じるものである。 However, in such a conventional lifting device, when the piece piece is positioned at the engageable position, a single claw (tooth portion) provided at the tip portion of the piece piece has a plurality of pieces provided in the rotating ratchet. It is an aspect that engages only with a single tooth part among the tooth parts, that is, an aspect in which only single tooth parts are engaged with each other. Also, the engagement depth is set deep enough to prevent the engagement state from being easily released. For this reason, the pitch of the ratchet teeth must be set to be somewhat large (for example, several tens of mm), and as a result, the height adjustment of the elevating top plate also corresponds to the pitch of the ratchet teeth (several tens of mm). It can only be performed in units of mm), and the height position of the lifting table cannot be finely adjusted in units of several millimeters so that it is substantially flush with the height position of the table top. A problem occurs.
このような不具合は、昇降部材にその高さ方向に沿って複数の溝を有する第1噛合部を設け、静止部材に溝に選択的に係合する単一のピンを設けた態様であっても同様に生じる。 Such a problem is an aspect in which a first engagement portion having a plurality of grooves along the height direction is provided on the elevating member, and a single pin that selectively engages the grooves is provided on the stationary member. Also occurs in the same way.
本発明は、このような課題に着目してなされたものであって、主たる目的は、良好な噛合状態を確保しつつ昇降天板等の家具構成部材高さ位置を数mm単位で微調整可能な昇降装置を提供することにある。 The present invention has been made by paying attention to such problems, and the main purpose is to finely adjust the height position of furniture components such as a lifting table while ensuring a good meshing state. Is to provide a simple lifting device.
すなわち、本発明の昇降装置は、筐体等の家具本体に対して昇降天板等の家具構成部材を昇降させ得る昇降装置であって、前記家具本体に設けられた静止部材と、当該静止部材に対して昇降移動し且つ前記家具構成部材を支持する昇降部材と、前記静止部材と前記昇降部材との間に設けられ前記昇降部材の昇降移動を規制するロック状態又は前記昇降部材の昇降移動を許容するロック解除状態を取り得る噛合機構とを具備してなり、当該噛合機構が、前記静止部材にその高さ方向に沿って所定間隔で設けた複数の第1歯部を有する第1噛合部と、前記昇降部材にその高さ方向に沿って所定間隔で設けた複数の第2歯部を有する第2噛合部とを備え、前記ロック状態において複数の前記第1歯部と複数の前記第2歯部とを相互に噛合させるとともに、少なくとも前記噛合機構が前記ロック状態にある場合に、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制する相対変位規制手段を具備し、さらに、前記第2噛合部が、前記第1噛合部と噛合可能な噛合可能位置と、前記第1噛合部との噛合状態を解除し得る噛合解除位置との間で進退移動し得るものであり、前記相対変位規制手段が、少なくとも前記第2噛合部を前記昇降部材の内面部との間で挟持し得る挟持部材を用いてなり、前記第2噛合部を前記噛合可能位置に位置付けた場合に、前記第1噛合部及び前記第2噛合部を前記昇降部材の内面部と挟持部材との間に挟み込むことにより、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制するものであることを特徴とする。 That is, the lifting device of the present invention is a lifting device capable of lifting and lowering a furniture constituent member such as a lifting table with respect to a furniture body such as a housing, the stationary member provided on the furniture body, and the stationary member An elevating member that moves up and down with respect to the furniture and supports the furniture component, and a locked state that is provided between the stationary member and the elevating member and restricts the elevating movement of the elevating member A first meshing portion having a plurality of first tooth portions provided at predetermined intervals along the height direction of the stationary member. And a second meshing portion having a plurality of second tooth portions provided at predetermined intervals along the height direction of the elevating member, and the plurality of first tooth portions and the plurality of first teeth in the locked state. If another is meshed and two teeth DOO And a relative displacement restricting means for restricting relative displacement of the first meshing portion and the second meshing portion in the thickness direction at least when the meshing mechanism is in the locked state. The two meshing portions are capable of moving back and forth between a meshable position that can mesh with the first meshing portion and a mesh release position that can cancel the meshing state with the first meshing portion, and the relative displacement When the restricting means uses a clamping member that can clamp at least the second meshing part with the inner surface part of the elevating member, and the first meshing part is positioned at the meshing position, the first Restricting relative displacement of the first meshing portion and the second meshing portion in the thickness direction by sandwiching the meshing portion and the second meshing portion between the inner surface portion of the elevating member and the clamping member It is characterized by being.
ここで、家具本体としては、筐体(ワゴン)や椅子本体等が挙げられ、家具構成部材としては、筐体や椅子本体に対して昇降し得る昇降天板や肘掛けが挙げられる。 Here, examples of the furniture main body include a casing (wagon), a chair main body, and the like, and examples of the furniture constituent member include an elevating table and an armrest that can be moved up and down with respect to the casing and the chair main body.
このようなものであれば、噛合状態(噛合機構のロック状態)において、複数の第1歯部部と複数の第2歯部とが相互に噛合するため、従来のような単一の歯同士が噛合する態様と比較して、より良好な噛合状態を実現することができ、その上、第1歯部及び第2歯部のそれぞれのピッチを小さく設定した場合であっても十分な耐荷重性も確保することができる。その結果、第1歯部及び第2歯部のそれぞれのピッチを小さく設定し、昇降天板の高さ位置を、併設して使用する机等の天板の高さ位置と略面一となるように数ミリ単位で調節することができる。しかも、各歯部を、静止部材又は昇降部材の高さ方向に沿って複数設けているため、ラチェット方式の噛合機構と比較して複数の歯部同士を確実に噛合させることができる。 In such a case, since the plurality of first tooth portions and the plurality of second tooth portions mesh with each other in the meshing state (locking state of the meshing mechanism), the conventional single teeth Compared with the mode of meshing, it is possible to realize a better meshing state, and furthermore, sufficient load resistance even when the pitch of each of the first tooth part and the second tooth part is set small Sex can be secured. As a result, the respective pitches of the first tooth portion and the second tooth portion are set to be small, and the height position of the elevating top plate is substantially flush with the height position of the top plate of a desk or the like used in combination. Can be adjusted in units of several millimeters. In addition, since a plurality of tooth portions are provided along the height direction of the stationary member or the elevating member, the plurality of tooth portions can be reliably meshed with each other as compared with the ratchet type meshing mechanism.
また、少なくとも前記噛合機構が前記ロック状態にある場合に、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制する相対変位規制手段を具備しているので、これら第1噛合部及び2噛合部の厚み方向への相対変位(面ずれ)することによって生じ得る第1噛合部と第2噛合部との噛合状態の悪化を不具合を有効に解消することができる。 Also, at least when the engagement mechanism is in the locked state, the first engagement portion and the second engagement portion is not provided with a relative displacement regulating means for regulating that relative displacement in the thickness direction Runode, these Deterioration of the meshing state between the first meshing portion and the second meshing portion, which can be caused by relative displacement (surface displacement) in the thickness direction of the first meshing portion and the second meshing portion, can be effectively solved.
さらに、前記第2噛合部が、前記第1噛合部と噛合可能な噛合可能位置と、前記第1噛合部との噛合状態を解除し得る噛合解除位置との間で進退移動し得るものであり、前記相対変位規制手段が、少なくとも前記第2噛合部を前記昇降部材の内面部との間で挟持し得る挟持部材を用いてなり、前記第2噛合部を前記噛合可能位置に位置付けた場合に、前記第1噛合部及び前記第2噛合部を前記昇降部材の内面部と挟持部材との間に挟み込むことにより、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制するものであるので、簡単な構造を作用しつつ、第1噛合部及び第2噛合部が薄板状のものであっても、これら各噛合部を挟み込むことにより相対的な面ずれを防止し、良好な噛合状態を維持することができる。なお、第2噛合部を、昇降部材の内面部に直接設けた態様又は所定の部材を介して間接的に設けたもの何れであってもよい。 Further, the second meshing portion can move forward and backward between a meshable position where the second meshing portion can mesh with the first meshing portion and a mesh release position where the meshing state with the first meshing portion can be released. The relative displacement regulating means uses a clamping member that can clamp at least the second meshing portion with the inner surface of the elevating member, and the second meshing portion is positioned at the meshable position. The first meshing part and the second meshing part are relatively displaced in the thickness direction by sandwiching the first meshing part and the second meshing part between the inner surface part of the elevating member and the clamping member. Therefore, even if the first meshing portion and the second meshing portion are thin plate-like, the relative surface deviation is prevented by sandwiching each meshing portion while acting a simple structure. And a good meshing state can be maintained. In addition, the aspect which provided the 2nd meshing part directly in the inner surface part of the raising / lowering member, or what provided indirectly through the predetermined member may be sufficient.
特に、前記第2噛合部が、前記昇降部材にスライド移動可能に設けたスライダ部材に取り付けられ、前記第1噛合部と噛合可能な噛合可能位置と、前記第1噛合部との噛合状態を解除し得る噛合解除位置との間でスライダ部材と共にスライド移動し得るものであり、前記相対変位規制手段が、少なくとも前記第2噛合部を前記スライダ部材との間で挟持し得る挟持部材を用いてなり、前記第2噛合部を前記噛合可能位置に位置付けた場合に、前記第1噛合部及び前記第2噛合部を前記スライダ部材と挟持部材との間に挟み込むことにより、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制するものであれば、スライダ部材を利用して第2噛合部の移動をスムーズ且つ適切に行うことができる。 In particular, the second meshing portion is attached to a slider member that is slidably movable on the lifting member, and the meshing position between the meshing position that can mesh with the first meshing portion and the first meshing portion is released. The relative displacement regulating means uses a clamping member that can clamp at least the second meshing portion with the slider member. When the second meshing portion is positioned at the meshable position, the first meshing portion and the second meshing portion are sandwiched between the slider member and the sandwiching member, thereby der those second engagement portion restricts that relative displacement in the thickness direction lever, can be moved in the second engagement portion by using the slider member smoothly and properly.
相対変位規制手段が、前記第2噛合部を前記噛合解除位置に位置付けた場合に、前記第1噛合部の前記挟込状態を解除し得るようにしたものであれば、第2噛合部を噛合解除位置に位置付けたロック解除状態において、第1歯部がスライダ部材及び連動部材と干渉しないため、昇降部材のスムーズな昇降移動を実現することができる。 If the relative displacement restricting means can release the clamping state of the first meshing portion when the second meshing portion is positioned at the meshing release position, the second meshing portion meshes. In the unlocked state positioned at the release position, the first tooth portion does not interfere with the slider member and the interlocking member, so that the lifting member can be smoothly moved up and down.
また、前記第2噛合部が、前記昇降部材にスライド移動可能に設けたスライダ部材に取り付けられ、前記第1噛合部と噛合可能な噛合可能位置と、前記第1噛合部との噛合状態を解除し得る噛合解除位置との間でスライダ部材と共にスライド移動し得るものであり、所定の操作力の付与又は停止に連動して前記第2噛合部及び前記スライダ部材に対して昇降移動する連動部材の動作を、前記第2噛合部の前記噛合可能位置から前記噛合解除位置への移動又は前記噛合解除位置から前記噛合可能位置への進退移動に変換する動作変換手段を設けていれば、この動作変換手段を利用して第2噛合部の進退動作を的確に行うことができるとともに、スライダ部材により第2噛合部の移動を円滑に行うことができる。 In addition, the second meshing portion is attached to a slider member that is slidably movable on the lifting member, and the meshing position between the meshing position that can mesh with the first meshing portion and the first meshing portion is released. Of the interlocking member that can slide with the slider member between the meshing release positions that can be moved and that moves up and down relative to the second meshing part and the slider member in conjunction with the application or stoppage of a predetermined operating force. If there is provided a motion conversion means for converting the operation into the movement of the second meshing portion from the meshable position to the meshing release position or the forward / backward movement from the meshing release position to the meshable position, this motion conversion is provided. The second engagement portion can be accurately advanced and retracted using the means, and the second engagement portion can be smoothly moved by the slider member.
動作変換手段の具体的な実施態様としては、前記動作変換手段が、前記連動部材と、当該連動部材と前記スライダ部材とを連結する連結部材とを用いてなり、前記連動部材又は前記連結部材の何れか一方にガイド用溝を設けるとともに、他方に当該ガイド用溝に沿って移動し得るガイド用突起部を設け、前記連動部材の昇降移動に基づいて前記ガイド用突起部を前記ガイド用溝に案内させるさせることにより前記連結部材を介して前記第2噛合部を前記噛合可能位置から前記噛合解除位置へ又は前記噛合解除位置から前記噛合可能位置へ移動させるようにしたものが挙げられる。 As a specific embodiment of the motion converting means, the motion converting means comprises the interlocking member and a connecting member that connects the interlocking member and the slider member, and the interlocking member or the connecting member One of the guide grooves is provided, and the other is provided with a guide protrusion that can move along the guide groove. The guide protrusion is formed into the guide groove based on the up-and-down movement of the interlocking member. An example is one in which the second meshing portion is moved from the meshable position to the meshing release position or from the meshing release position to the meshable position through the connecting member by being guided.
この場合、前記ガイド用溝を前記連動部材又は前記連結部材の何れか一方に複数設けるとともに、前記ガイド用突起部を、前記ガイド用溝に対応させて他方に複数設ければ、動作変換の確実性向上に資する。 In this case, if a plurality of the guide grooves are provided in one of the interlocking member or the connecting member, and a plurality of the guide protrusions are provided in the other corresponding to the guide grooves, reliable operation conversion is achieved. Contributes to improvement of performance.
動作変換手段の他の具体的な実施態様としては、前記動作変換手段が、前記スライダ部材と、連動部材とを用いてなり、前記スライダ部材の一側縁部にその高さ方向に沿って所定角度で傾斜させた第1傾斜部を設けるとともに、前記連動部材の側縁部のうち前記スライダの一側縁部に対向し得る一側縁部にその高さ方向に沿って前記第1傾斜部に対応する第2傾斜部を設け、前記連動部材の昇降移動に基づいて第1傾斜部及び第2傾斜部を相互に摺動させることにより前記第2噛合部を前記噛合可能位置から前記噛合解除位置へ又は前記噛合解除位置から前記噛合可能位置へ移動させるようにしたものが挙げられる。このような態様であっても、簡単な構成でありながら、第2噛合部の噛合可能位置と前記噛合解除位置との間における移動を確実に行うことができる。 As another specific embodiment of the motion converting means, the motion converting means uses the slider member and an interlocking member, and a predetermined one of the side edges of the slider member is provided along the height direction thereof. A first inclined portion that is inclined at an angle is provided, and one of the side edge portions of the interlocking member that is opposed to one side edge portion of the slider is arranged along the height direction of the first inclined portion. A second inclined portion corresponding to the first and second inclined portions is slid relative to each other based on the up-and-down movement of the interlocking member, thereby releasing the second meshing portion from the meshable position. Examples include those that are moved to a position or from the mesh release position to the meshable position. Even in such a mode, the movement between the meshable position of the second meshing portion and the mesh release position can be reliably performed with a simple configuration.
なお、動作変換手段を、ガイド用溝とガイド用突起部との組み合わせ又は第1傾斜部と第2傾斜部との組み合わせの何れか一方のみから構成してもよく、或いは両方を用いて構成してもよい。 Note that the motion conversion means may be composed of only one of the combination of the guide groove and the guide protrusion, the combination of the first inclined portion and the second inclined portion, or both. May be.
また、前記スライダ部材及び前記連動部材が、合成樹脂素材から形成されたものであれば、スライダ部材及び連動部材を金属素材等から形成した場合と比較して、それぞれの部材の移動時又は移動停止時に生じ得る衝撃音や摩擦音を低減することができる。 Further, if the slider member and the interlocking member are made of a synthetic resin material, each member is moved or stopped as compared with the case where the slider member and the interlocking member are made of a metal material or the like. Impact noise and friction noise that can sometimes occur can be reduced.
第1噛合部と第2噛合部との噛合及び噛合解除をスムーズ且つ的確に行えるようにするには、前記第1噛合部及び前記第2噛合部の各歯部の突出方向を、前記静止部材又は前記昇降部材の高さ方向に直交する仮想直線に対して若干傾斜させた方向に設定すればよい。 In order to smoothly and accurately engage and disengage the first meshing portion and the second meshing portion, the protruding direction of each tooth portion of the first meshing portion and the second meshing portion is determined by the stationary member. Or what is necessary is just to set to the direction slightly inclined with respect to the virtual straight line orthogonal to the height direction of the said raising / lowering member.
さらに、本発明に係る昇降天板付ワゴンは、家具本体たる筐体と、当該筐体に取り付けられ高さ位置を調整可能な前記家具構成部材たる昇降天板と、前記筐体に対して前記昇降天板を昇降させ得る前記昇降装置とを具備していることを特徴とするものであり、上述した昇降装置に係る効果と同様の効果を得ることができ、実用性に優れたものとなる。 Furthermore, the wagon with a lifting / lowering top plate according to the present invention includes a housing that is a furniture body, a lifting / lowering top plate that is attached to the housing and whose height position can be adjusted, and the lifting / lowering table with respect to the housing. The above-described lifting device that can lift and lower the top plate is provided, and the same effect as that of the lifting device described above can be obtained, which is excellent in practicality.
以上説明したように本発明によれば、噛合状態(噛合機構のロック状態)において、複数の第1歯部部と複数の第2歯部とが相互に噛合するため、耐荷重性に優れた良好な噛合状態を実現することができ、第1歯部及び第2歯部のそれぞれのピッチを小さく設定した場合であっても良好な噛合状態が損なわれることがない。その結果、家具本体に対する家具構成部材の高さ位置を数ミリ単位で調節することが可能となり、ユーザの種々の使用態様に柔軟に対応することができ、実用性に優れたものとなる。 As described above, according to the present invention, in the meshing state (locking state of the meshing mechanism), the plurality of first tooth portions and the plurality of second tooth portions mesh with each other, so that the load resistance is excellent. A good meshing state can be realized, and even if the respective pitches of the first tooth portion and the second tooth portion are set small, the good meshing state is not impaired. As a result, the height position of the furniture constituent member with respect to the furniture body can be adjusted in units of several millimeters, so that it can flexibly cope with various usage modes of the user, and has excellent practicality.
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.
本実施形態に係る昇降装置Dは、図1(同図は昇降天板付ワゴンAを一部省略して示す全体概略図である)に示すような昇降天板付ワゴンAに適用されるものである。 The elevating device D according to the present embodiment is applied to a wagon A with an elevating top plate as shown in FIG. 1 (the drawing is an overall schematic diagram in which a part of the wagon A with an elevating top plate is omitted). .
昇降天板付ワゴンAは、筐体Bと、筐体Bの天面部B2側に設けられ且つ筐体Bに対して昇降移動し得る昇降天板Cと、筐体Bに対して昇降天板Cを昇降させ得る昇降装置Dとを具備している。 The wagon A with a lifting table is provided with a casing B, a lifting table C provided on the top surface B2 side of the casing B and capable of moving up and down with respect to the casing B, and a lifting table C with respect to the casing B. And a lifting device D capable of lifting and lowering.
筐体Bは、図1及び図2(図2は筐体Bの平面を一部簡略化して示す図である)に示すように、左右の側面部B1を、天面部B2、底面部及び背面部B3により連結してなり、一又は複数の抽斗BHを収容する収容空間を前方に開放させている。ない、図示しない底面部にキャスタを設け、床面上を水平移動可能に構成している。側面部B1には、前端部に内方に突出する前補強部B11を折曲加工等により一体に設けるとともに、後端部側に、平面視略凸状に折曲加工し且つ前補強部B11と略同程度内方に突出する後補強部B12を溶接等により一体的に設け、これら前補強部B11及び後補強部B12を跨ぐ位置にレールB13(サスペンションレールであってもよい)を抽斗BHの段数に対応させて設け、このレールB13によりに抽斗BHをスライド可能に支持している。そして、前補強部B11と後補強部B12との間に、後述する静止部材Eを筐体Bに固定するための固定部材B14を設けている。固定部材B14は、側面部B1に添接し得る添接部B14aと、添接部B14aの前縁部及び後縁部からそれぞれ平面視略凸状に折曲加工され前記各補強部B11、B12の突出寸法よりも若干小さい突出寸法を有する前縁突出部B14b及び後縁突出部B14cとを一体に備え、前縁突出部B14bと後縁突出部B14cとの間に、後述する昇降部材Fを収容し得る昇降部材収容空間B14sを形成したものであり、溶接等により側面部B1に一体的に設けている。また、筐体Bの天面部B2の両側縁部近傍には、前記昇降部材収容空間B14sに挿通し得る開口部B21を形成している。この開口部B21の内側縁部と固定部材B14との間に後述する静止部材Eの本体部H1が挿入可能なスペースが形成してある。なお、抽斗BHは、上方を開口させてなる収容体の前端部に鏡板を組み付けた周知のものである。 As shown in FIGS. 1 and 2 (FIG. 2 is a partially simplified view of the plane of the housing B), the housing B has a left and right side surface portion B1, a top surface portion B2, a bottom surface portion, and a back surface. It is connected by part B3, and the accommodation space for accommodating one or more drawers BH is opened forward. A caster is provided on a bottom portion (not shown) and is configured to be horizontally movable on the floor surface. A front reinforcing portion B11 protruding inwardly at the front end portion is integrally provided on the side surface portion B1 by bending or the like, and is bent into a substantially convex shape in plan view on the rear end portion side, and the front reinforcing portion B11 is provided. A rear reinforcing portion B12 that protrudes inward substantially to the same extent is integrally provided by welding or the like, and a rail B13 (which may be a suspension rail) is placed over the front reinforcing portion B11 and the rear reinforcing portion B12. The drawer BH is slidably supported by the rail B13. And between the front reinforcement part B11 and the rear reinforcement part B12, the fixing member B14 for fixing the stationary member E mentioned later to the housing | casing B is provided. The fixing member B14 is bent into a substantially convex shape in a plan view from an attachment part B14a that can be attached to the side face part B1, and a front edge part and a rear edge part of the attachment part B14a, and the reinforcing parts B11, B12 A front edge protrusion B14b and a rear edge protrusion B14c having a protrusion dimension slightly smaller than the protrusion dimension are integrally provided, and a lifting member F described later is accommodated between the front edge protrusion B14b and the rear edge protrusion B14c. The elevating member accommodating space B14s that can be formed is formed, and is integrally provided on the side surface B1 by welding or the like. Further, in the vicinity of both side edge portions of the top surface portion B2 of the housing B, an opening portion B21 that can be inserted into the elevating member accommodating space B14s is formed. Between the inner edge of the opening B21 and the fixing member B14, a space is formed in which a main body H1 of a stationary member E described later can be inserted. In addition, the drawer BH is a well-known thing which assembled | attached the end plate to the front-end part of the container formed by opening upwards.
昇降天板Cは、筐体Bの平面視形状に略対応する平面視形状を有するものである。 The lifting / lowering top plate C has a plan view shape substantially corresponding to the plan view shape of the housing B.
昇降装置Dは、図3〜図5(図3(a)、(b)、(c)はそれぞれ昇降装置Dの正面図、背面図、側面図であり、図4(a)、(b)は昇降装置Dをそれぞれ異なる角度から見た全体斜視図であり、図5は図3(c)におけるx−x線断面図である)等に示すように、筐体Bに固定される静止部材Eと、静止部材Eに対して昇降移動し且つ昇降天板Cを支持する昇降部材Fと、静止部材Eと昇降部材Fとの間に設けられ昇降部材Fの昇降移動を規制するロック状態又は昇降部材Fの昇降移動を許容するロック解除状態を取り得る噛合機構Gとを具備したものである。 FIGS. 3 to 5 (FIGS. 3A, 3B, and 3C) are a front view, a rear view, and a side view, respectively, of the lifting device D. FIGS. FIG. 5 is an overall perspective view of the lifting device D viewed from different angles, and FIG. 5 is a sectional view taken along the line xx in FIG. E, a lifting member F that moves up and down relative to the stationary member E and supports the lifting plate C, and a locked state that is provided between the stationary member E and the lifting member F and restricts the lifting and lowering movement of the lifting member F And a meshing mechanism G that can be unlocked to allow the lifting member F to move up and down.
静止部材Eは、例えば一枚の板金から形成され、前記筐体Bの側面部B1に取り付けられる静止部材本体Hと、静止部材本体Hの上端部に取り付けられ且つ筐体Bの天面部B2に形成した開口部B21に嵌め込み可能なキャップ部材Iとを備えたものである。 The stationary member E is formed of, for example, a single sheet metal, and is mounted on the stationary member main body H that is attached to the side surface portion B1 of the housing B, and the top surface portion B2 of the housing B that is attached to the upper end portion of the stationary member main body H. And a cap member I that can be fitted into the formed opening B21.
静止部材本体Hは、図6(同図は静止部材本体Hの全体斜視図である)等に示すように、主として、高さ方向に沿って延び正面視略矩形状をなす長尺の本体部H1と、本体部H1の巾方向略中央部に高さ方向に沿って延び且つ後述する昇降部材Fを組み付けた状態において昇降部材Fに設けた後述する連結部材Qの一部が表出し得るように正面視略矩形状に切り欠いてなる窓部H3と、窓部H3の一方の側縁部から内方に突出するように起立させた起立片の先端縁から窓部H3の他方の側縁部に向かって突出する複数の第1歯部H21を高さ方向に沿って所定間隔で設けてなる第1噛合部H2とを備えたものである。本実施形態では、第1歯部H21の突出方向を、静止部材本体Hの高さ方向に直交する仮想直線に対して若干上方に傾斜させた方向に設定し、隣接する第1歯部H21間の離間距離を略2mmに設定している。本体部H1の上端部には、内方に突出し且つキャップ部材Iを取り付けるためのキャップ部材取付用孔H11aを有する内方突出部H11を設けている。また、本体部H1の下端部近傍部位を内方に向かって平面視略L字状に切り起こしてなり、昇降部材Fを昇降移動可能に抱かかえ得る一対の抱込部H12を形成している。さらに、本体部H1の上端部に、他の部位より上方に突出してなる上方突出部H13と、後述する同期用ピニオンVのボス部V1が表出して引っ掛かり得るピニオン用丸孔H14を形成している。 As shown in FIG. 6 (the figure is an overall perspective view of the stationary member main body H) and the like, the stationary member main body H mainly extends along the height direction and is a long main body having a substantially rectangular shape in front view. H1 and a part of a connecting member Q described later provided on the elevating member F can be exposed in a state where the elevating member F described later is assembled to the substantially central portion in the width direction of the main body H1. Window portion H3 that is cut out in a generally rectangular shape when viewed from the front, and the other side edge of window portion H3 from the leading edge of the upright piece that protrudes inwardly from one side edge portion of window portion H3. And a first meshing part H2 formed by providing a plurality of first tooth parts H21 protruding toward the part at predetermined intervals along the height direction. In the present embodiment, the protruding direction of the first tooth portion H21 is set to a direction slightly inclined upward with respect to a virtual straight line perpendicular to the height direction of the stationary member body H, and between the adjacent first tooth portions H21. Is set to approximately 2 mm. An inward protruding portion H11 that protrudes inward and has a cap member attachment hole H11a for attaching the cap member I is provided at the upper end portion of the main body H1. Further, a portion near the lower end of the main body H1 is cut and raised inward in a substantially L shape in plan view, thereby forming a pair of holding portions H12 that can hold the elevating member F so as to be movable up and down. . Further, an upper protrusion H13 protruding upward from other parts and a pinion round hole H14 that can be caught by a boss V1 of a synchronization pinion V described later are formed at the upper end of the main body H1. Yes.
キャップ部材Iは、図3〜図5等に示すように、例えば合成樹脂素材から形成され、前記静止部材本体Hの内方突出部H11の上面側を被覆し得る上面被覆部I1と、上面被覆部I1の縁部から下方に垂下し静止部材本体Hの内方突出部H11の縁部を弾性保持し得る鍔部I2とを一体に有するものである。上面被覆部I1に、キャップ部材取付用孔H11aに対応し且つ昇降部材Fが挿通可能な昇降部材用挿通孔I1aを形成するとともに、昇降部材用挿通孔I1aの縁部から下方に垂下し且つキャップ部材取付用孔H11a及び筐体Bの天面部B2に形成した開口部B21に嵌入してそれぞれの開口縁部に弾性係合し得る垂下部I11と、静止部材本体Hの上方突出部H13を嵌合状態で被覆し得る上方突出部被覆部I12とを設けている。 As shown in FIGS. 3 to 5 and the like, the cap member I is formed of, for example, a synthetic resin material, and can cover the upper surface side of the inwardly projecting portion H11 of the stationary member body H. It has a flange I2 that hangs downward from the edge of the part I1 and can elastically hold the edge of the inward protrusion H11 of the stationary member main body H. The upper surface covering portion I1 is formed with an elevating member insertion hole I1a corresponding to the cap member attaching hole H11a and through which the elevating member F can be inserted, and is suspended downward from the edge of the elevating member insertion hole I1a. A hanging portion I11 that can be fitted into the opening B21 formed in the member mounting hole H11a and the top surface portion B2 of the housing B and can be elastically engaged with each opening edge portion, and the upper protruding portion H13 of the stationary member main body H are fitted. An upper protruding portion covering portion I12 that can be covered in the combined state is provided.
一方、昇降部材Fは、主として、例えば一枚の板金を平面視略コ字状に折曲加工してなり前記静止部材本体Hより大きい高さ寸法を有する昇降部材本体Jと、昇降部材本体Jの上端部に設けられ前記昇降天板Cを支持するステーKと、所定の操作力が付与される操作部Lと、昇降部材本体Jに設けられその巾方向に沿ってスライド移動し得るスライダ部材Mと、当該スライダ部材Mに設けられ前記第1噛合部H2に噛合可能な第2噛合部Nと、昇降部材本体Jに設けられ前記操作部Lに付与される操作力に連動して前記第2噛合部N及び前記スライダ部材Mに対して昇降移動し得る連動部材Pと、スライダ部材Mと連動部材Pとを連結する連結部材Qとを備えたものである。 On the other hand, the elevating member F mainly includes, for example, an elevating member main body J formed by bending a sheet metal into a substantially U shape in plan view and having a height dimension larger than the stationary member main body H, and the elevating member main body J. A stay K that is provided at the upper end portion of the elevating plate and supports the elevating plate C, an operating portion L to which a predetermined operating force is applied, and a slider member that is provided in the elevating member main body J and that can slide along the width direction thereof. M, a second engagement portion N provided on the slider member M and engageable with the first engagement portion H2, and an operation force provided on the lifting member body J and applied to the operation portion L. The interlocking member P which can be moved up and down with respect to the two meshing parts N and the slider member M, and the connecting member Q which connects the slider member M and the interlocking member P are provided.
昇降部材本体Jは、図7(同図(a)、(b)は昇降部材本体Jをそれぞれ異なる角度から見た全体斜視図である)等に示すように、静止部材Eに組み付けた状態で本体部H1に対面し得る平板部J1と、平板部J1の両側縁部から平板部J1の内方に向かって突出する一対の側板部J2と、高さ方向略中央部を側面視略L字状に切り起こし且つスライダ部材Mをスライド移動可能に保持し得るスライダ保持部J3とを備えたものである。本実施形態では、先端部を相互に近接する方向に延出させてなる一対のスライダ保持部J3を巾方向に所定間隔離間させて二組設けており、その離間距離を静止部材本体Hの第1噛合部H2に設けた各第1歯部H21の突出寸法よりも大きく設定している。 As shown in FIG. 7 (the same figure (a), (b) is the whole perspective view which looked at the raising / lowering member main body J from each different angle) etc., the raising / lowering member main body J is in the state assembled | attached to the stationary member E. A flat plate portion J1 that can face the main body portion H1, a pair of side plate portions J2 projecting inward of the flat plate portion J1 from both side edge portions of the flat plate portion J1, and a substantially central portion in the height direction are substantially L-shaped in a side view. And a slider holding portion J3 that can be slid up and hold the slider member M so as to be slidable. In the present embodiment, two pairs of slider holding portions J3 each having a distal end extending in a direction approaching each other are provided at a predetermined interval in the width direction. It is set to be larger than the projecting dimension of each first tooth portion H21 provided in one meshing portion H2.
ステーKは、昇降部材本体Jの上端部に設けられ昇降天板Cの奥行き寸法に略相当する奥行き寸法を有するものである(図1参照)。 The stay K is provided in the upper end part of the raising / lowering member main body J, and has a depth dimension substantially equivalent to the depth dimension of the raising / lowering top plate C (refer FIG. 1).
操作部Lは、図3〜図5等に示すように、主として、昇降部材本体Jに対して昇降移動可能な昇降レバーL1と、昇降レバーL1の両側縁にそれぞれ隣接し得る位置に設けられ昇降移動不能な静止レバーL2とから構成されている。この昇降レバーL1は、下端部を連動部材Pに係合させてなるロッドRの上端部に接続されている。また、これら昇降レバーL1及びロッドRは、バネSの付勢力により、連動部材Pと共に下降し得る方向に常時付勢されている。バネSは、その上端部を連動部材Pに引っ掛けるとともに下端部を平板部J1の下端部近傍に引っ掛けたものである。 As shown in FIGS. 3 to 5 and the like, the operating portion L is mainly provided at a position where the lifting lever L1 can be moved up and down relative to the lifting member main body J, and at positions that can be adjacent to both side edges of the lifting lever L1. The stationary lever L2 is immovable. The elevating lever L1 is connected to the upper end of a rod R having a lower end engaged with the interlocking member P. Further, the lifting lever L1 and the rod R are constantly urged in a direction that can be lowered together with the interlocking member P by the urging force of the spring S. The spring S has its upper end hooked to the interlocking member P and its lower end hooked to the vicinity of the lower end of the flat plate portion J1.
スライダ部材Mは、図3〜図5及び図8(図8は昇降装置Dの要部拡大断面図である)等に示すように、例えば合成樹脂素材から形成されたものであり、巾方向中央部に他の部位より薄肉に設定してなる薄肉部M1を有し、薄肉部M1を巾方向に挟み得る第1厚肉部M2及び第2厚肉部M3の上縁部及び下縁部に、前記スライダ保持部J3にスライド移動可能に保持され得る被保持部M4をそれぞれ設けている。また、スライダ部材Mの一方の側縁部(図示例では連動部材P側に位置する側縁部)にその高さ方向に沿って第1凹凸部M5を形成している。この第1凹凸部M5は、突出端部がフラット状をなす一対の第1凸部M51と、第1凸部M51の突出方向に対して所定角度で傾斜し且つ各第1凸部M51に連続する一対の第1傾斜部M52とを備えている。そして、本実施形態では、第1厚肉部M2及び第2厚肉部M3のうち、連動部材P側に位置する第1厚肉部M2に第2噛合部Nを取り付けている。 As shown in FIGS. 3 to 5 and FIG. 8 (FIG. 8 is an enlarged cross-sectional view of a main part of the lifting device D) and the like, the slider member M is formed of, for example, a synthetic resin material, In the upper part and the lower edge part of the first thick part M2 and the second thick part M3 that have a thin part M1 that is set thinner than other parts in the part, and can sandwich the thin part M1 in the width direction Further, a held portion M4 that can be slidably held by the slider holding portion J3 is provided. In addition, a first concavo-convex portion M5 is formed along the height direction on one side edge of the slider member M (side edge located on the interlocking member P side in the illustrated example). The first concavo-convex portion M5 is inclined at a predetermined angle with respect to the protruding direction of the first convex portion M51 and a pair of first convex portions M51 whose protruding end portions are flat, and is continuous with each first convex portion M51. And a pair of first inclined portions M52. And in this embodiment, the 2nd meshing part N is attached to the 1st thick part M2 located in the interlocking member P side among the 1st thick part M2 and the 2nd thick part M3.
第2噛合部Nは、例えば薄板の金属素材から形成され、第1厚肉部M2に重合し得る重合部N1と、静止部材本体Hに設けた第1噛合部H2の第1歯部H21に対応する複数の第2歯部N2とを一体に有するものである。第2歯部N2は、高さ方向に沿って複数設けられ、第1歯部H21と噛合し得るように、その方向を昇降部材本体Jの高さ方向に直交する仮想直線に対して若干下方に傾斜させた方向に設定し、隣接する第2歯部N2間の離間距離を略2mmに設定している。なお、本実施形態では、第2噛合部Nの重合部N1に、巾方向に延びる第1横長孔と、高さ方向に延びる第1縦長孔とを形成し、これら第1横長孔及び第1縦長孔を、それぞれスライダ部材Mの第1厚肉部M2に設けられた巾方向に延びる横状突出部M21及び高さ方向に延びる縦状突出部M22に嵌合させることにより、第2歯部N2の突出方向が下方に傾斜する方向となるようにしている。すなわち、第1横長孔、第1縦長孔、横状突出部M21及び縦状突出部M22により、スライダ部材Mに対する第2噛合部Nの取付方向を位置決めする位置決め手段を構成している。また、第1厚肉部M2に、他の部位より外方に突出し内部にその突出方向に沿って雌ねじ部を形成した雌ねじ突出部M23を設け、スライダ部材Mに第2噛合部Nを取り付けた状態において、雌ねじ突出部M23に、重合部N1に形成した雌ねじ用第1丸孔が挿入し得るようにしている。そして、第2噛合部Nをスライダ部材Mに取り付けた状態において、第2歯部N2は、スライダ部材Mの第1厚肉部M2に重合せず、第2厚肉部M3に向かって薄肉部M1に飛び出た状態となる。なお、本実施形態では、被保持部M4をスライダ保持部J3に保持させる作業を容易に行えるように、スライダ部材Mの他方の側縁部近傍領域(図示例では第2厚肉部M3)に相互に相寄る方向に弾性変形可能な一対の弾性変形部M31を設けている。 The second meshing portion N is formed of, for example, a thin metal material, and overlaps with the superposition portion N1 that can be superposed on the first thick portion M2 and the first tooth portion H21 of the first meshing portion H2 provided on the stationary member main body H. A plurality of corresponding second tooth portions N2 are integrally provided. A plurality of second tooth portions N2 are provided along the height direction, and the direction thereof is slightly below the virtual straight line perpendicular to the height direction of the elevating member body J so as to be able to mesh with the first tooth portion H21. The distance between adjacent second teeth N2 is set to approximately 2 mm. In the present embodiment, a first horizontally elongated hole extending in the width direction and a first vertically elongated hole extending in the height direction are formed in the overlapping portion N1 of the second meshing portion N, and the first horizontally elongated hole and the first By fitting the vertically long holes to the horizontal protrusions M21 extending in the width direction and the vertical protrusions M22 extending in the height direction provided in the first thick part M2 of the slider member M, the second tooth portion The projecting direction of N2 is inclined downward. That is, the first horizontally long hole, the first vertically long hole, the horizontal protrusion M21, and the vertical protrusion M22 constitute positioning means for positioning the mounting direction of the second engagement portion N with respect to the slider member M. Further, the first thick portion M2 is provided with a female screw protruding portion M23 that protrudes outward from other portions and has a female screw portion formed in the protruding direction inside, and the second meshing portion N is attached to the slider member M. In the state, the first round hole for female screw formed in the overlapping portion N1 can be inserted into the female screw protrusion M23. And in the state which attached the 2nd meshing part N to the slider member M, the 2nd tooth | gear part N2 does not superimpose on the 1st thick part M2 of the slider member M, but a thin part toward the 2nd thick part M3 The state jumps to M1. In the present embodiment, in order to facilitate the work of holding the held portion M4 on the slider holding portion J3, the other side edge portion vicinity region (the second thick portion M3 in the illustrated example) of the slider member M is provided. A pair of elastically deformable portions M31 are provided that can be elastically deformed in the direction of mutual approach.
連動部材Pは、図3〜図5及び図8等に示すように、例えば合成樹脂素材から形成され、スライダ部材Mよりも大きい高さ寸法を有するものであり、一方の側縁部(図示例ではスライダ部材M側の側縁部)にその高さ方向に沿って設けられ且つ前記第1凹凸部M5に対応する第2凹凸部P1と、前記ロッドRの下端部位を保持するロッド保持部P2と、前記バネSの上端部が引っ掛け可能なバネ引掛部P3とを備えている。第2凹凸部P1は、第1凹凸部M5と同様に、突出端部がフラット状をなす一対の第2凸部P11と、第2凸部P11の突出方向に対して所定角度で傾斜し且つ各第2凸部P11に連続する一対の第2傾斜部P12とを有している。第1傾斜部Q21と第2傾斜部P12とは、相互に平行をなすように設定してある。また、第2凹凸部P1を設けた一方の側縁部近傍領域を他の部位よりも薄肉に設定し、この薄肉の領域を、連動部材Pと後述する連結部材Qとが相互に干渉して連動部材Pの昇降移動及びスライダ部材Mのスライド移動が規制されることを回避する干渉回避部P4として機能させている。この干渉回避部P4に、外方に突出し後述する連結部材Qのガイド用溝Q21に案内されるガイド用突起部P41を一対設けている。 The interlocking member P is formed of, for example, a synthetic resin material and has a height dimension larger than that of the slider member M, as shown in FIGS. Then, the second concavo-convex portion P1 provided along the height direction of the slider member M side and corresponding to the first concavo-convex portion M5, and the rod holding portion P2 for holding the lower end portion of the rod R. And a spring hooking portion P3 on which the upper end of the spring S can be hooked. Similarly to the first uneven portion M5, the second uneven portion P1 is inclined at a predetermined angle with respect to the pair of second protruded portions P11 whose protruding end portions are flat, and the protruding direction of the second protruded portion P11, and It has a pair of 2nd inclination part P12 which follows each 2nd convex part P11. The first inclined part Q21 and the second inclined part P12 are set so as to be parallel to each other. In addition, one side edge portion vicinity region where the second uneven portion P1 is provided is set to be thinner than other portions, and the interlocking member P and a connecting member Q described later interfere with each other in the thin region. It is made to function as the interference avoidance part P4 which avoids that the raising / lowering movement of the interlocking member P and the sliding movement of the slider member M are controlled. The interference avoiding portion P4 is provided with a pair of guide protrusions P41 that protrude outward and are guided by guide grooves Q21 of the connecting member Q described later.
連結部材Qは、図3〜図5及び図8(図8において想像線に囲まれパターンを付した部位は連結部材Qの一部を示すものである)等に示すように、例えば合成樹脂素材から形成され、スライダ部材Mと略同じ高さ寸法を有する正面視略矩形状をなすものであり、第2噛合部Nに形成した第1横長孔、第1縦長孔及び雌ねじ用第1丸孔にそれぞれ対応する第2横長孔、第2縦長孔及び雌ねじ用第2丸孔を形成している。そして、この連結部材Qは他の部位より内方に膨出させてなる内方膨出部Q2を設け、この内方膨出部Q2に、前記連動部材Pのガイド用突起部P41を案内し得るガイド用溝Q21を一対形成している。各ガイド用溝Q21は、前記第1傾斜部M52及び第2傾斜部P12の傾斜角度に対応し且つ高さ方向に所定寸法離間させてなる第1傾斜片及び第2傾斜片と、各傾斜部(第1傾斜片及び第2傾斜片)の上端部同士を接続する上接続片と、各傾斜部(第1傾斜片及び第2傾斜片)の下端部同士を接続する下接続片とからなり、正面視視略菱形状をなすものである。本実施形態では、相対的に高さ位置が高い方を第1傾斜片とし、低い方を第2傾斜片としている。 The connecting member Q is, for example, a synthetic resin material as shown in FIGS. 3 to 5 and FIG. 8 (the part surrounded by an imaginary line and attached with a pattern in FIG. 8 indicates a part of the connecting member Q). The first laterally elongated hole, the first vertically elongated hole, and the first round hole for the female screw formed in the second meshing portion N are substantially rectangular in the front view and have substantially the same height as the slider member M. Are formed with a second horizontal hole, a second vertical hole, and a second round hole for a female screw. The connecting member Q is provided with an inwardly bulging portion Q2 that is bulged inward from other portions, and guides the guide protrusion P41 of the interlocking member P to the inwardly bulging portion Q2. A pair of guide grooves Q21 to be obtained is formed. Each guide groove Q21 corresponds to the inclination angle of the first inclined part M52 and the second inclined part P12 and is separated by a predetermined dimension in the height direction, and each inclined part. It consists of an upper connection piece that connects the upper ends of the first inclined piece and the second inclined piece, and a lower connection piece that connects the lower ends of the inclined parts (the first inclined piece and the second inclined piece). It has a substantially rhombus shape when viewed from the front. In the present embodiment, the relatively high height is the first inclined piece, and the lower is the second inclined piece.
このような構成をなす連結部材Qは、連動部材Pのガイド用突起部P41をガイド用溝Q21内に収容し、且つ第2噛合部Nを重合させたスライダ部材Mの横状突出部M21、縦状突出部M22及び雌ねじ突出部M23にそれぞれ第2横長孔、第2縦長孔及び雌ねじ用第2丸孔を嵌合し、雌ねじ用第2丸孔に挿入したねじを雌ねじ突出部M23の雌ネジ部を螺合することにより、連動部材Pとスライダ部材Mとを連結した状態でスライダ部材Mに取り付けられる。この取付状態において、第2噛合部Nはスライダ部材Mと連結部材Qとの間に挟持され、第2噛合部Nの各第2歯部N2は連結部材Qによって被覆されている。 The connecting member Q having such a configuration accommodates the guide protrusion P41 of the interlocking member P in the guide groove Q21, and the horizontal protrusion M21 of the slider member M in which the second meshing portion N is overlapped, The vertical protrusion M22 and the female screw protrusion M23 are fitted with the second horizontally long hole, the second vertical hole and the second round hole for female screw, respectively, and the screw inserted into the second round hole for female screw is the female of the female screw protruding part M23. By screwing the screw portions, the interlocking member P and the slider member M are connected to the slider member M in a connected state. In this attached state, the second meshing portion N is sandwiched between the slider member M and the connecting member Q, and each second tooth portion N2 of the second meshing portion N is covered with the connecting member Q.
昇降部材本体Jの上半部には、昇降部材本体Jの平板部J1と対向し得る位置に配される上半部カバー部材Tを適宜の手段で取り付けており、平板部J1と上半部カバー部材Tとの間に、高さ方向に沿って複数の係合爪を設けた同期用ラックUと、同期用ラックUに係合しながら回動し得る同期用ピニオンVとを収容している。同期用ピニオンVの中央部には他の部位より内方に膨出するボス部V1を設け、このボス部V1に後述する同期用シャフトが挿入可能な正面視四角形状をなすシャフト挿入部V2を形成している。上半部カバー部材Tの巾方向略中央部に、上端部近傍部位から下端部まで高さ方向に沿って切り欠いてなる切欠部T1を形成し、この切欠部T1を巾方向に跨ぐ位置に同期用ピニオンVを配するとともに、同期用ラックUの係合爪が切欠部T1に臨むようにしてある。なお、上半部カバー部材Tには、同期用ラックUを保持するためのラック保持用リブT3と、ロッドRを昇降移動可能に保持するロッド保持部T4と、先端部位を屈曲させてなるロッドRの屈曲部R1に添接し上半部カバー部材Tに対するロッドRの位置ずれを防止する位置ずれ防止部T5と、バネSによって下方へ付勢されるロッドRと当接し、このロッドRに取り付けられる昇降レバーL1の初期位置を規定するための当接部T6とを設けている(図5参照)。 An upper half cover member T disposed at a position that can face the flat plate portion J1 of the lift member main body J is attached to the upper half portion of the lift member main body J by appropriate means, and the flat plate portion J1 and the upper half portion A synchronizing rack U provided with a plurality of engaging claws along the height direction between the cover member T and a synchronizing pinion V that can rotate while being engaged with the synchronizing rack U are accommodated. Yes. A boss portion V1 that bulges inward from other parts is provided in the central portion of the synchronization pinion V, and a shaft insertion portion V2 having a quadrangular shape in front view into which a synchronization shaft described later can be inserted is inserted into the boss portion V1. Forming. A cutout portion T1 is formed in a substantially central portion in the width direction of the upper half cover member T so as to be cut out along the height direction from the vicinity of the upper end portion to the lower end portion, and the cutout portion T1 is located at a position across the width direction. The synchronizing pinion V is arranged, and the engaging claw of the synchronizing rack U faces the notch T1. The upper half cover member T has a rack holding rib T3 for holding the synchronization rack U, a rod holding portion T4 for holding the rod R so as to be movable up and down, and a rod formed by bending the tip portion. Attaching to the rod R is abutted against a position deviation prevention portion T5 that is in contact with the bent portion R1 of the R and prevents the position deviation of the rod R with respect to the upper half cover member T, and a rod R biased downward by the spring S. A contact portion T6 for defining an initial position of the lift lever L1 is provided (see FIG. 5).
このような昇降部材Fを、前記静止部材Eに組み付けるには、上半部カバー部材Tと静止部材本体Hの本体部H1とが添接し得るように静止部材Eに対する昇降部材Fの向きを決定した上で、昇降部材Fをキャップ部材Iの昇降部材用挿通孔I1aに上方から挿通し、静止部材本体Hの下端部に設けた一対の抱込部H12にスライド移動可能に保持させることにより行う。このようにして一体的に組み付けてなる静止部材E及び昇降部材Fを、筐体Bの天面部B2に形成した一対の開口部B21にそれぞれ挿入して筐体Bに組み込み、昇降部材Fを昇降部材収容空間B14sに収容するとともに、静止部材本体Hの本体部H1を、筐体Bの側面部B1に設けた固定部材B14の前縁突出部B14b及び後縁突出部B14cに添接させた状態でねじ等所定の取付部材を用いて取り付ける。なお、固定部材B14の前縁突出部B14b及び後縁突出部B14cの所定部位に切り起こし部を形成し、静止部材本体Hの本体部H1の所定部位をこれら切り起こし部に挿し込むように引っ掛けることにより、静止部材E及び昇降部材Fを筐体Bに取り付けるようにしても構わない。このような取付態様を採用することによって、ねじ止めする手間を省略又は軽減することが可能となる。そして、筐体Bの天面部B2の下面側において、各本体部H1のピニオン用丸孔H14から表出する同期用ピニオンVのシャフト挿入部V2に、断面視四角形状をなす棒状の同期用シャフトの端部をそれぞれ挿入する。その結果、昇降部材Fの昇降移動に伴って同期用ピニオンVが同期用シャフトを介して同期回転しながら同期用ラックUの係合爪に順次係合し、左右一対の昇降部材Fが同調して昇降移動し得る。なお、昇降部材本体Jの下端部に、例えば合成樹脂素材から形成された緩衝部材Wを設けるとともに、昇降部材本体Jの所定部位に、静止部材本体Hの一部に干渉することにより昇降部材Fのそれ以上の上昇移動又は下降移動を規制する移動規制部を設けている。本実施形態では、昇降部材本体Jの各側板部J2に高さ方向に沿って所定距離離間させて設けた一対のねじ孔に、それぞれねじ頭を側板部J2より側方に突出させた状態でねじを螺合し、このねじのねじ頭を静止部材Eの抱込部H12に干渉させることにより昇降部材Fのそれ以上の上昇移動又は下降移動を規制するようにしている(図示省略)。また、図10(同図(a)は昇降部材本体Jの要部拡大斜視図であり、同図(b)は静止部材本体Hの要部拡大斜視図であり、同図(c)は昇降部材本体Jと静止部材本体Hとの組付状態を示す要部拡大斜視図である)に示すように、昇降部材本体Jに、内方に向かって切り起こしてなる内方切起片J5を設け、この内方切起片J5を、静止部材本体Hの本体部H1に設けた外方に切り起こしてなる外方切起片H15に干渉させることにより、昇降部材Fのそれ以上の下降移動を規制するようにしても構わない。この場合、内方切起片J5又は外方切起片H15の何れか一方あるいは両方に、緩衝部材(例えば薄板状のゴム等)を設ければよい。 In order to assemble such an elevating member F to the stationary member E, the orientation of the elevating member F with respect to the stationary member E is determined so that the upper half cover member T and the main body H1 of the stationary member main body H can be brought into contact with each other. Then, the elevating member F is inserted into the elevating member insertion hole I1a of the cap member I from above, and is held by a pair of holding portions H12 provided at the lower end portion of the stationary member main body H so as to be slidable. . The stationary member E and the elevating member F, which are integrally assembled in this way, are respectively inserted into the pair of openings B21 formed in the top surface portion B2 of the housing B and incorporated in the housing B, and the elevating member F is moved up and down. The state in which the main body H1 of the stationary member main body H is accommodated in the member accommodating space B14s and is brought into contact with the front edge protruding portion B14b and the rear edge protruding portion B14c of the fixing member B14 provided on the side surface portion B1 of the housing B. Attach using a predetermined mounting member such as a screw. In addition, a cut-and-raised portion is formed at a predetermined portion of the front edge protruding portion B14b and the rear edge protruding portion B14c of the fixing member B14, and the predetermined portion of the main body portion H1 of the stationary member main body H is hooked so as to be inserted into these cut-and-raised portions. Accordingly, the stationary member E and the elevating member F may be attached to the housing B. By adopting such an attachment mode, it is possible to omit or reduce the trouble of screwing. Then, on the lower surface side of the top surface portion B2 of the casing B, a rod-shaped synchronization shaft having a quadrangular shape in cross section is formed in the shaft insertion portion V2 of the synchronization pinion V that is exposed from the pinion round hole H14 of each main body portion H1. Insert the end of each. As a result, as the elevating member F moves up and down, the synchronizing pinion V sequentially engages with the engaging claws of the synchronizing rack U while rotating synchronously via the synchronizing shaft, and the pair of left and right elevating members F are synchronized. Can move up and down. In addition, while providing the buffer member W formed, for example from a synthetic resin raw material in the lower end part of the raising / lowering member main body J, the raising / lowering member F is interfered with a part of the stationary member main body H in the predetermined site | part of the raising / lowering member main body J. There is provided a movement restricting portion for restricting further upward movement or downward movement. In the present embodiment, the screw heads are protruded laterally from the side plate portion J2 in a pair of screw holes provided in the side plate portions J2 of the elevating member body J so as to be separated from each other by a predetermined distance along the height direction. A screw is screwed and the screw head of this screw is caused to interfere with the holding portion H12 of the stationary member E, thereby restricting further upward movement or downward movement of the elevating member F (not shown). 10 (a) is an enlarged perspective view of the main part of the lifting member main body J, FIG. 10 (b) is an enlarged perspective view of the main part of the stationary member main body H, and FIG. As shown in the enlarged perspective view of the main part showing the assembled state of the member main body J and the stationary member main body H), the elevating member main body J is provided with an inwardly raised and raised piece J5 which is cut and raised inward. Further, the elevating member F is further moved downward by interfering with the outer cut and raised pieces H15 formed by cutting and raising the inner cut and raised pieces J5 on the main body H1 of the stationary member main body H. You may make it regulate. In this case, a buffer member (for example, a thin plate-like rubber) may be provided on one or both of the inner cut and raised pieces J5 and the outer cut and raised pieces H15.
しかして、昇降部材Fを静止部材Eに組み付けた状態において、静止部材Eの第1噛合部H2は、昇降部材Fのスライダ部材Mの第1厚肉部M2と第2厚肉部M3との間に位置し、スライダ部材Mと連結部材Qとによりスライド移動可能に保持されており、第1歯部H21が、スライダ部材Mの薄肉部M1に臨む位置に位置付けられた第2噛合部Nの各第2歯部N2にそれぞれ噛合し得る。第1噛合部H2と第2噛合部Nとが相互に噛合している場合、昇降部材Fの昇降移動は規制され、一方、第1噛合部H2と第2噛合部Nとの噛合状態が解除された場合、昇降部材Fの昇降移動は許容される。すなわち、第1噛合部H2と第2噛合部Nとを用いて、昇降部材Fの昇降移動を規制するロック状態又は昇降部材Fの昇降移動を許容するロック解除状態を取り得る噛合機構Gを構成している。 Thus, in a state where the elevating member F is assembled to the stationary member E, the first meshing portion H2 of the stationary member E is formed between the first thick portion M2 and the second thick portion M3 of the slider member M of the elevating member F. The second engagement portion N is located between the slider member M and the connecting member Q so as to be slidably movable, and the first tooth portion H21 is positioned at a position facing the thin portion M1 of the slider member M. It can mesh with each second tooth portion N2. When the first meshing part H2 and the second meshing part N are meshed with each other, the lifting movement of the elevating member F is restricted, while the meshing state between the first meshing part H2 and the second meshing part N is released. In this case, the lifting / lowering member F is allowed to move up and down. That is, the first meshing portion H2 and the second meshing portion N are used to form a meshing mechanism G that can take a locked state that restricts the lifting movement of the lifting member F or a unlocked state that allows the lifting movement of the lifting member F. is doing.
本実施形態では、第1噛合部H2及び第2噛合部Nを相互に噛合可能な状態でスライダ部材Mと連結部材Qとの間に挟み込むことにより、第1噛合部H2と第2噛合部Nとが厚み方向に相対変位することを規制している(図8参照)。すなわち、連結部材Qが、第1噛合部H2及び第2噛合部Nをスライダ部材Mとの間で挟持し得る本発明の「挟持部材」としても機能し、これら連結部材Q及びスライダ部材Mを用いて、本発明の「相対変位規制手段」を構成している。 In the present embodiment, the first meshing portion H2 and the second meshing portion N are sandwiched between the slider member M and the connecting member Q in a state where the first meshing portion H2 and the second meshing portion N can be meshed with each other. Restricts relative displacement in the thickness direction (see FIG. 8). That is, the connecting member Q also functions as a “holding member” of the present invention that can hold the first engaging portion H2 and the second engaging portion N with the slider member M, and the connecting member Q and the slider member M are The “relative displacement regulating means” of the present invention is used.
前記第2噛合部Nは、図9に示すように、第1噛合部H2と噛合可能な噛合可能位置(同図(a−1)参照)と、第1噛合部H2との噛合状態を解除し得る噛合解除位置(同図(b―1)参照)との間でスライダ部材Mと共に移動し、前記操作部Lの昇降レバーL1を上昇させる操作力が付与された場合に噛合解除位置を取り、前記操作力が停止された場合に噛合可能位置を取るように設定してある。 As shown in FIG. 9, the second meshing portion N releases the meshing state between the meshable position (see (a-1) in FIG. 9A) that can mesh with the first meshing portion H2 and the first meshing portion H2. When the operating force is applied to raise the lifting lever L1 of the operation portion L, the mesh releasing position is taken. When the operation force is stopped, the engagement position is set.
次に、図9を参照して、第2噛合部Nを噛合可能位置と噛合解除位置との間で移動させる方法及び作用について説明する。なお、図9における(a―2)、(b−2)は、それぞれ同図(a―1)、(b−1)を連結部材Qを省略して示す拡大図である。 Next, with reference to FIG. 9, a method and an action of moving the second meshing portion N between the meshable position and the mesh release position will be described. Note that (a-2) and (b-2) in FIG. 9 are enlarged views showing the same members (a-1) and (b-1) with the connecting member Q omitted.
先ず、第2噛合部Nを噛合可能位置(同図(a―1)参照)から噛合解除位置(同図(b−1)参照)へ移動させるには、前記昇降レバーL1を上方に押し上げる操作力を付与することにより行う。この操作力に連動してロッドR及び連動部材Pが前記バネSの付勢力に抗して上昇することによって、スライダ部材Mに対する連動部材Pの高さ位置が変位し、後述する第1凸部M51と第2凸部P11との当接状態が解除されるとともに、連動部材Pに設けたガイド用突起部P41を連結部材Qのガイド用溝Q21の下接続片及び第1傾斜片に沿って案内させることにより、連結部材Qが前記干渉回避部P4を利用して連動部材Pに近寄る方向に巾方向に沿って移動し、これに伴ってスライダ部材Mも連結部材Qと共に連動部材Pに近寄る方向に巾方向に沿ってスライド移動する。この際、スライダ部材Mが、第1凹凸部M5と第2凹凸部P1が相互に係合し得る方向に沿って、その第2凹凸部P1の第2傾斜部P12を連動部材Pの第1凹凸部M5の第1傾斜部M52に摺動させることにより、スライダ部材Mの移動を確実に行うことができる。その結果、スライダ部材Mに保持された第2噛合部Nが、連動部材Pに近寄る方向、換言すれば第1噛合部H2から離間する方向に移動して第1噛合部H2と噛合し得ない噛合解除位置に位置付けられる。第2噛合部Nが噛合解除位置に位置付けられた場合、連結部材Qは、第1噛合部H2を被覆し得ない位置に位置付けられており、この連結部材Qとスライダ部材Mとによる第1噛合部H2の挟込状態が解除される。また、第1凹凸部M5及び第2凹凸部P1は、相互に係合した状態をとる(同図(a―2)参照)。 First, in order to move the second meshing portion N from the meshable position (see (a-1) in the figure) to the mesh release position (see (b-1) in the same figure), an operation of pushing up the lifting lever L1 upward. This is done by applying power. When the rod R and the interlocking member P are raised against the biasing force of the spring S in conjunction with this operating force, the height position of the interlocking member P with respect to the slider member M is displaced, and a first convex portion to be described later. The contact state between M51 and the second protrusion P11 is released, and the guide protrusion P41 provided on the interlocking member P is moved along the lower connecting piece and the first inclined piece of the guide groove Q21 of the connecting member Q. By guiding, the connecting member Q moves along the width direction in the direction approaching the interlocking member P using the interference avoiding part P4, and accordingly, the slider member M approaches the interlocking member P together with the connecting member Q. Slide along the width direction in the direction. At this time, the slider member M moves the second inclined portion P12 of the second uneven portion P1 along the direction in which the first uneven portion M5 and the second uneven portion P1 can engage with each other. The slider member M can be reliably moved by sliding on the first inclined portion M52 of the uneven portion M5. As a result, the second meshing portion N held by the slider member M cannot move in the direction approaching the interlocking member P, in other words, away from the first meshing portion H2, and cannot mesh with the first meshing portion H2. It is positioned at the mesh release position. When the second meshing portion N is positioned at the meshing release position, the connecting member Q is positioned at a position where the first meshing portion H2 cannot be covered, and the first meshing by the connecting member Q and the slider member M is performed. The sandwiched state of the part H2 is released. Moreover, the 1st uneven | corrugated | grooved part M5 and the 2nd uneven | corrugated | grooved part P1 take the state mutually engaged (refer the figure (a-2)).
一方、第2噛合部Nの噛合解除位置から噛合可能位置への移動は、前記操作力の停止、つまり昇降レバーL1から手を離す(又は操作力を弱める)動作に伴って行われる。昇降レバーL1から手を離すと、前記バネSの弾性復帰力により連動部材P、ロッドR及び昇降レバーL1が元の位置(操作力付与前の位置)まで下降し、この連動部材Pの下降移動により、第1凹凸部M5の第1傾斜部M52と第2凹凸部P1の第2傾斜部P12とを相互に摺動させながらスライダ部材Mが連動部材Pから離間する方向に巾方向に沿って移動し、連動部材Pの一連の下降移動により、経時的に、第1凹凸部M5の第1傾斜部M52と第2凹凸部P1の第2傾斜部P12との摺動状態が解除され、続いて第2凹凸部P1の第2凸部P11と第1凹凸部M5の第1凸部M51とがそれぞれフラット状の突出端部同士を相互に面的に当接させた状態となり、且つ、連動部材Pの他側縁部(第2凹凸部P1を設けていない側の側縁部)が昇降部材本体Jの内面部(側板部J2の内面部)に当接することにより、第2噛合部Nの噛合可能位置から噛合解除位置への退避(後退)移動が禁止される(同図(b―2)参照)。この際、連結部材Qが、そのガイド用溝Q21の上接続片及び第2傾斜片に沿って連動部材Pのガイド用突起部P41を案内させることにより、スライダ部材Mの移動を確実に行うことができる。その結果、スライダ部材Mに保持された第2噛合部Nが、連動部材Pから離間する方向、換言すれば第1噛合部H2に近寄る方向に移動して第1噛合部H2と噛合可能な噛合可能位置に位置付けられる。このように、本実施形態では、第1凸部M51と、第2凸部P11とを用いて、これら第1凸部M51及び第2凸部P11を相互に当接させることにより第2噛合部Nの係合可能位置から係合解除位置への退避移動を禁止する「ストッパ手段」を構成している。また、ガイド用溝Q21とガイド用突起部P41との組み合わせ、及び、第1傾斜部M52と第2傾斜部P12との組み合わせにより、連動部材Pの昇降移動を、第2噛合部Nの噛合可能位置から噛合解除位置への移動又は噛合解除位置から噛合可能位置への移動に変換する本発明の「動作変換手段」を構成している。 On the other hand, the movement of the second meshing portion N from the mesh release position to the meshable position is performed with the stop of the operation force, that is, the operation of releasing the hand from the elevating lever L1 (or weakening the operation force). When the hand is released from the lifting lever L1, the interlocking member P, the rod R and the lifting lever L1 are lowered to the original position (position before the operation force is applied) by the elastic return force of the spring S, and the interlocking member P is moved downward. Accordingly, the slider member M moves along the width direction in a direction away from the interlocking member P while sliding the first inclined portion M52 of the first uneven portion M5 and the second inclined portion P12 of the second uneven portion P1. As a result of a series of downward movements of the interlocking member P, the sliding state between the first inclined portion M52 of the first uneven portion M5 and the second inclined portion P12 of the second uneven portion P1 is released over time, and subsequently The second convex portion P11 of the second concave and convex portion P1 and the first convex portion M51 of the first concave and convex portion M5 are in a state in which the flat projecting end portions are in surface contact with each other and interlocked with each other. The other side edge of the member P (the side edge on the side where the second uneven part P1 is not provided) ) Abuts the inner surface of the elevating member main body J (the inner surface of the side plate portion J2), and the retraction (retraction) movement of the second meshing portion N from the meshable position to the meshing release position is prohibited (see FIG. (Refer to (b-2)). At this time, the connecting member Q guides the guide protrusion P41 of the interlocking member P along the upper connecting piece and the second inclined piece of the guide groove Q21, thereby reliably moving the slider member M. Can do. As a result, the second meshing portion N held by the slider member M moves in a direction away from the interlocking member P, in other words, in a direction approaching the first meshing portion H2, and can mesh with the first meshing portion H2. Positioned at a possible position. As described above, in the present embodiment, the first projecting portion M51 and the second projecting portion P11 are used to bring the first projecting portion M51 and the second projecting portion P11 into contact with each other, thereby causing the second engaging portion. The “stopper means” is configured to prohibit the retreating movement from the N engageable position to the disengaged position. Further, the interlocking member P can be moved up and down by the combination of the guide groove Q21 and the guide protrusion P41 and the combination of the first inclined portion M52 and the second inclined portion P12, and the second engaging portion N can be engaged. It constitutes the “motion converting means” of the present invention that converts the movement from the position to the mesh release position or the movement from the mesh release position to the meshable position.
以上に説明した昇降装置Dを備えた昇降天板付ワゴンAの使用方法について説明する。 The usage method of the wagon A with a lifting / lowering top plate provided with the lifting / lowering apparatus D demonstrated above is demonstrated.
先ず、各静止レバーL2に人差し指と小指を掛けながら中指と薬指で昇降レバーL1を押し上げる操作力を付与すると、第1噛合部H2と第2噛合との噛合状態、及び連結部材Qとスライダ部材Mとによる第1噛合部H2の挟込状態が解除され、昇降部材Fの昇降移動を許容するロック解除状態となり、前記操作力を付与し続けたまま昇降天板Cを任意の高さ位置まで上昇移動又は下降移動させる操作に伴って、昇降部材Fが静止部材Eに対してスライドしながら上昇移動又は下降移動する。そして、昇降天板Cを任意の高さ位置に位置付けた状態で昇降レバーL1に対する前記操作力を停止すると、第1噛合部H2と第2噛合部Nとが噛合し、昇降部材Fの昇降移動が規制されるロック状態となり、昇降天板Cの高さ位置が固定される。なお、一対の昇降部材Fは、各昇降装置Dに高さ位置変更不能に設けられた前記同期用ピニオンVを、そのシャフト挿入部V2に挿入した同期用シャフトにより同期回転させながらそれぞれ同期用ラックUの係合爪に係合させることにより同期して昇降し得るように設定している。また、本実施形態では、第1噛合部H2及び第2噛合部Nにそれぞれ第1歯部H21又は第2歯部N2をそれぞれ2mm間隔で設けているため、昇降天板Cの高さ位置を2mm単位で微調整することができ、昇降天板Cを、この昇降天板付ワゴンAと組み合わせて使用される図示しない机の天板と略面一の高さ位置に設定することが可能となる。 First, when an operation force is applied to push up the lifting lever L1 with the middle finger and the ring finger while putting the index finger and little finger on each stationary lever L2, the meshing state of the first meshing portion H2 and the second meshing, and the connecting member Q and the slider member M The state where the first meshing portion H2 is pinched is released, and the unlocking state allowing the elevating movement of the elevating member F is released, and the elevating top plate C is raised to an arbitrary height position while the operation force is continuously applied. In accordance with the operation of moving or moving downward, the lifting member F moves up or down while sliding with respect to the stationary member E. And if the said operating force with respect to the raising / lowering lever L1 is stopped in the state which positioned the raising / lowering top plate C in arbitrary height positions, the 1st meshing part H2 and the 2nd meshing part N will mesh, and the raising / lowering movement of the raising / lowering member F will be carried out. Is locked, and the height position of the elevating table C is fixed. The pair of elevating members F are respectively synchronized racks while synchronously rotating the synchronizing pinion V provided in the elevating devices D so that the height position cannot be changed by the synchronizing shaft inserted into the shaft insertion portion V2. It is set so that it can be moved up and down synchronously by engaging with the engaging claws of U. Moreover, in this embodiment, since the 1st meshing part H2 and the 2nd meshing part N are each providing the 1st tooth part H21 or the 2nd tooth part N2 at 2 mm space | interval, respectively, the height position of the raising / lowering top plate C is set. Fine adjustment can be made in units of 2 mm, and the lift table C can be set at a height substantially flush with the top plate of a desk (not shown) used in combination with the wagon A with the lift table. .
このように、本実施形態に係る昇降装置Dは、昇降部材Fの昇降移動を規制するロック状態又は前記昇降部材Fの昇降移動を許容するロック解除状態を取り得る噛合機構Gを、静止部材Eにその高さ方向に沿って所定間隔で設けた複数の第1歯部H21を有する第1噛合部H2と、昇降部材Fにその高さ方向に沿って所定間隔で設けた複数の第2歯部N2を有する第2噛合部Nとを用いて構成し、ロック状態において複数の第1歯部H21と複数の第2歯部N2とを相互に噛合させるようにしたものであるため、従来のように第1歯部と第2歯部が1対1で噛合する態様と比較して、安定した噛合状態を実現することができのみならず、耐荷重性も向上し、第1歯部H21及び第2歯部N2のそれぞれのピッチを小さく設定することが可能となり、その結果、昇降天板Cの高さ位置を数ミリ単位で調節することが可能となり、利用者の種々の使用態様に柔軟に対応することができ、実用性に優れたものとなる。 As described above, the lifting device D according to the present embodiment includes the meshing mechanism G that can be in the locked state that restricts the lifting and lowering movement of the lifting member F or the unlocked state that allows the lifting and lowering member F to move up and down. A first meshing portion H2 having a plurality of first teeth H21 provided at predetermined intervals along the height direction, and a plurality of second teeth provided on the elevating member F at predetermined intervals along the height direction. Since the second meshing portion N having the portion N2 is configured so that the plurality of first tooth portions H21 and the plurality of second tooth portions N2 are meshed with each other in the locked state, Thus, as compared with a mode in which the first tooth portion and the second tooth portion mesh in a one-to-one relationship, not only a stable meshing state can be realized, but also the load resistance is improved, and the first tooth portion H21. And the pitch of each of the second tooth portions N2 can be set small. Ri, as a result, it becomes possible to adjust the height position of the elevator top board C in a few millimeters, can flexibly correspond to various usage mode of the user, and is excellent in practicality.
特に、第2噛合部Nを噛合可能位置に位置付けた場合に、第1噛合部H2及び第2噛合部Nをスライダ部材Mと連結部材Qとの間に挟み込むことにより、第1噛合部H2と第2噛合部Nとが厚み方向に相対変位することを規制する相対変位規制手段を備えているため、第1噛合部H2及び第2噛合部Nが薄板状のものであってもこれら第1噛合部H2及び第2噛合部Nを確実に噛合させることができ、第1噛合部H2と第2噛合部Nとが厚み方向に相対変位(面ずれ)することによって生じ得る噛合状態の悪化を防止し、より良好な噛合状態を確保することが可能となる。 In particular, when the second meshing portion N is positioned at the meshable position, the first meshing portion H2 and the second meshing portion N are sandwiched between the slider member M and the connecting member Q, thereby Since the relative displacement restricting means for restricting relative displacement of the second meshing portion N in the thickness direction is provided, the first meshing portion H2 and the second meshing portion N are thin plate-like ones. The meshing portion H2 and the second meshing portion N can be reliably meshed with each other, and the meshing state that can be caused by relative displacement (surface displacement) between the first meshing portion H2 and the second meshing portion N in the thickness direction is deteriorated. It is possible to prevent and secure a better meshing state.
しかも、相対変位規制手段が、第2噛合部Nを噛合解除位置に位置付けた場合に、第1噛合部H2の挟込状態を解除するようにしたものであるため、ロック解除状態において第1歯部H2がスライダ部材M及び連動部材Pと干渉しないため、静止部材Eに対する昇降部材Fのスムーズな昇降移動を実現することができる。 Moreover, since the relative displacement regulating means is configured to release the sandwiched state of the first meshing portion H2 when the second meshing portion N is positioned at the meshing release position, the first tooth in the unlocked state Since the portion H <b> 2 does not interfere with the slider member M and the interlocking member P, it is possible to realize a smooth up / down movement of the up / down member F relative to the stationary member E.
また、連動部材Pにガイド用溝Q21を設けるとともに、連結部材Qにガイド用溝Q21に沿ってスライド移動し得るガイド用突起部P41を設け、連動部材Pの昇降移動に基づいてガイド用突起部P41をガイド用溝Q21に沿ってスライド移動させることにより連結部材Qを介して連動部材Pの昇降移動を第2噛合部Nの噛合可能位置と噛合解除位置との間の進退移動に変換する動作変換手段を備えているため、第2噛合部Nの移動を安定したものとすることができる。 In addition, the interlocking member P is provided with a guide groove Q21, and the connecting member Q is provided with a guide protrusion P41 that can slide along the guide groove Q21. The operation of converting the ascending / descending movement of the interlocking member P to the forward / backward movement between the meshable position and the mesh release position of the second meshing portion N via the connecting member Q by sliding the P41 along the guide groove Q21. Since the conversion means is provided, the movement of the second meshing portion N can be stabilized.
加えて、ガイド用溝Q21及びガイド用突起部P41を、それぞれ相互に対応するように複数設けているため、連動部材Pの動作を第2噛合部Nの動作に効率良く変換させることができる。 In addition, since a plurality of guide grooves Q21 and guide protrusions P41 are provided so as to correspond to each other, the operation of the interlocking member P can be efficiently converted into the operation of the second meshing portion N.
さらに、本実施形態では、ガイド部として、スライダ部材Mに第1傾斜部M52を設けるとともに、連動部材Pに第1傾斜部M52に対応する第2傾斜部P12を設け、連動部材Pの昇降移動に基づいて第1傾斜部M52及び第2傾斜部P12を相互に摺動させることによって第2噛合部Nを噛合可能位置と前記噛合解除位置との間で進退移動させる態様をも採用しているため、前述のガイド用溝Q21とガイド用突起部P41の案内作用と相俟って、第1傾斜部M52及び第2傾斜部P12の摺動作用を利用して、第2噛合部Nの移動をよりスムーズ且つ的確に行うことが可能である。特に、第1傾斜部M52及び第2傾斜部P12を、それぞれ相互に対応するように複数設けているため、連動部材Pの動作を第2噛合部Nの動作に効率良く変換させることができる。 Furthermore, in this embodiment, while providing the 1st inclination part M52 in the slider member M as a guide part, the 2nd inclination part P12 corresponding to the 1st inclination part M52 is provided in the interlocking member P, and the raising / lowering movement of the interlocking member P is carried out. Further, a mode is adopted in which the first inclining portion M52 and the second inclining portion P12 are slid relative to each other to cause the second meshing portion N to move forward and backward between the meshable position and the meshing release position. Therefore, in conjunction with the guide action of the guide groove Q21 and the guide protrusion P41, the movement of the second meshing part N is performed using the sliding action of the first inclined part M52 and the second inclined part P12. Can be performed more smoothly and accurately. In particular, since a plurality of first inclined portions M52 and second inclined portions P12 are provided so as to correspond to each other, the operation of the interlocking member P can be efficiently converted into the operation of the second meshing portion N.
このような案内作用及び摺動作用を利用した動作変換手段であるため、バネ等の付勢力を利用した態様と比較して、移動停止時に生じ得る衝撃音を低減することができる。 Since it is a motion conversion means using such a guide action and a sliding action, it is possible to reduce an impact sound that can be generated when the movement is stopped, as compared with an aspect using an urging force such as a spring.
また、スライダ部材M及び連動部材Pが、合成樹脂素材から形成されたものであるため、これら部材M、Pの移動時の衝撃音、摩擦音をさらに抑えることができる。 Moreover, since the slider member M and the interlocking member P are formed from a synthetic resin material, it is possible to further suppress impact noise and friction noise when the members M and P are moved.
殊に、第1噛合部H2及び第2噛合部Nの各歯部H21、N2の突出方向を、静止部材E又は昇降部材Fの高さ方向に直交する仮想直線に対して若干傾斜させた方向に設定しているため、相互の噛合及び噛合解除をスムーズに行うことができる。 Particularly, the direction in which the teeth H21 and N2 of the first meshing part H2 and the second meshing part N are slightly inclined with respect to a virtual straight line perpendicular to the height direction of the stationary member E or the lifting member F is slightly inclined. Therefore, mutual engagement and disengagement can be performed smoothly.
なお、本発明は、以上に詳述した実施形態に限られるものではない。 The present invention is not limited to the embodiment described in detail above.
例えば、相対変位規制手段が、噛合機構がロック状態にある場合のみならず、ロック解除状態(すなわち第2噛合部が噛合解除位置に位置付けられた場合)にある場合にも、第1噛合部と第2噛合部とが厚み方向に相対変位することを規制するものであってもよい。具体的には、第2噛合部が噛合解除位置に位置付けられた場合にも、第1噛合部を、スライダ部材と連結部材(挟持部材)との間にスライド移動可能に挟み込むように設定すればよい。 For example, when the relative displacement regulating means is not only when the meshing mechanism is in the locked state, but also when it is in the unlocked state (that is, when the second meshing portion is positioned at the meshing release position), The second meshing portion may be restricted from relative displacement in the thickness direction. Specifically, even when the second engagement portion is positioned at the engagement release position, the first engagement portion is set so as to be slidably movable between the slider member and the connecting member (clamping member). Good.
また、相対規制手段が、第2噛合部を、昇降部材(昇降部材本体の平板部)の内面部と連結部材(挟持部材)との間に挟み込むことにより、第1噛合部と第2噛合部とが厚み方向に相対変位することを規制するようにしたものであっても構わない。この場合、前記スライダ部材は不要となり、部品点数の削減を図ることができる。なお、前記実施形態においてスライダ部材の一側縁部に設けた第1傾斜部及び第1凸部を、第2噛合部の一側縁部に設けてもよい。 Further, the relative regulating means sandwiches the second meshing portion between the inner surface portion of the elevating member (the flat plate portion of the elevating member main body) and the connecting member (clamping member), whereby the first meshing portion and the second meshing portion. May be configured to restrict relative displacement in the thickness direction. In this case, the slider member becomes unnecessary, and the number of parts can be reduced. In addition, you may provide the 1st inclination part and 1st convex part which were provided in the one side edge part of the slider member in the said embodiment in the one side edge part of a 2nd meshing part.
また、相対変位規制手段を構成する挟持部材として、連結部材とは異なる専用の部材を適用してもよい。 Moreover, you may apply the member for exclusive use different from a connection member as a clamping member which comprises a relative displacement control means.
前記実施形態におけるロッドそのものを本発明の連動部材として機能させ、このロッドの所定部位に、第2傾斜部及び第2凸部を設けた態様であってもよい。この場合、実施形態に示す連動部材Pが不要となり、部品点数の削減を図ることができる。 The mode in which the rod itself in the above embodiment functions as the interlocking member of the present invention, and the second inclined portion and the second convex portion are provided at a predetermined portion of the rod may be used. In this case, the interlocking member P shown in the embodiment is not necessary, and the number of parts can be reduced.
また、前記実施形態では、連動部材Pの上昇移動を第2噛合部Nの噛合可能位置から噛合解除位置への移動に変換する場合に、ガイド用溝Q21とガイド用突起部P41との案内作用を積極的に利用するとともに、連動部材Pの下降移動を第2噛合部Nの噛合解除位置から噛合可能位置への移動に変換する場合に、第1傾斜部M52と第2傾斜部P12との摺動作用を積極的に利用した態様を示したが、ガイド溝の形状や各傾斜部の傾斜角度を適宜変更することにより、連動部材Pの上昇移動を第2噛合部Nの噛合可能位置から噛合解除位置への移動に変換する場合に、第1傾斜部M52と第2傾斜部P12との摺動作用を積極的に利用するとともに、連動部材Pの下降移動を第2噛合部Nの噛合解除位置から噛合可能位置への移動に変換する場合に、ガイド用溝Q21とガイド用突起部P41との案内作用を積極的に利用するようにしても構わない。さらに、動作変換手段を、ガイド用溝とガイド用突起部との組み合わせ又は第1傾斜部と第2傾斜部との組み合わせの何れか一方のみにより構成し、第2係合要素の係合可能位置から係合解除位置への移動、及び係合解除位置から係合可能位置への移動を前記何れか一方の組み合わせにより実現するようにしてもよい。なお、ガイド用溝及びガイド用突起部はそれぞれ単一のものであってもよく、同様に、第1傾斜部及び第2傾斜部もそれぞれ単一のものでも構わない。 In the above-described embodiment, when the upward movement of the interlocking member P is converted into the movement of the second meshing portion N from the meshable position to the meshing release position, the guide action between the guide groove Q21 and the guide projection P41 is performed. When the downward movement of the interlocking member P is converted into the movement from the meshing release position of the second meshing part N to the meshable position, the first inclined part M52 and the second inclined part P12 Although the aspect which utilized the sliding action positively was shown, the upward movement of the interlocking member P is changed from the meshing possible position of the 2nd meshing part N by changing suitably the shape of a guide groove and the inclination angle of each inclination part. When converting to the movement to the mesh release position, the sliding action of the first inclined part M52 and the second inclined part P12 is positively used, and the downward movement of the interlocking member P is engaged with the second mesh part N. Convert to movement from the release position to the meshable position If the, it may also be actively utilized guiding action of the guide groove Q21 and the guide protrusion P41. Furthermore, the motion converting means is configured by only one of the combination of the guide groove and the guide protrusion or the combination of the first inclined portion and the second inclined portion, and the engageable position of the second engaging element. The movement from the engagement release position to the engagement release position and the movement from the engagement release position to the engageable position may be realized by any one of the combinations described above. Note that the guide groove and the guide protrusion may be single, and similarly, the first inclined portion and the second inclined portion may be single.
さらに、第2噛合部をスライダ部材に保持させる態様を採用する場合、第2噛合部をスライダ部材に対して面方向に回動不能に固定する固定手段を設けてもよい。具体的には、図11(同図(a)は一変形例に係るスライダ部材Mの全体斜視図であり、同図(b)は、図9(a―2)に対応させて示す図である)に示すように、スライダ部材Mの第1厚肉部M2に、他の部位より窪ませてなる凹陥部M24を形成し、当該凹陥部M24にこの凹陥部M24より僅かに小さい平面形状を有する第2噛合部Nの重合部N1を嵌入し、凹陥部M24を区成する段部M24aに第2噛合部Nの縁部を添接させることにより、第2噛合部Nをスライダ部材Mに対して面方向に回動不能に固定するようにしたものが挙げられる。なお、凹陥部M24には、内周に雌ねじ部を形成した一対の雌ねじ突出部M23を設け、この雌ねじ突出部M23を第2噛合部Nに形成した丸孔、及び図示しない連結部材の丸孔に挿入し、ねじを用いて螺合することにより、スライダ部材Mと連結部材とによって第2噛合部Nを挟持し得るようにしている。また、凹陥部M24及び第2噛合部Nの重合部N1を上下非対称形状とすることにより、第2歯部N2の突出方向が下方に傾斜する方向となるようにスライダ部材Mに対する第2噛合部Nの取付方向を位置決めする位置決め手段を構成している。 Furthermore, when adopting a mode in which the second meshing portion is held by the slider member, a fixing means for fixing the second meshing portion to the slider member so as not to rotate in the surface direction may be provided. Specifically, FIG. 11 (FIG. 11 (a) is an overall perspective view of a slider member M according to a modification, and FIG. 11 (b) is a view corresponding to FIG. 9 (a-2). As shown in the figure, a concave portion M24 is formed in the first thick portion M2 of the slider member M so as to be recessed from other portions, and the concave portion M24 has a planar shape slightly smaller than the concave portion M24. The overlapping portion N1 of the second meshing portion N is inserted, and the edge portion of the second meshing portion N is brought into contact with the stepped portion M24a that defines the recessed portion M24, whereby the second meshing portion N is attached to the slider member M. On the other hand, the thing fixed so that rotation was impossible in the surface direction is mentioned. The recessed portion M24 is provided with a pair of female screw protrusions M23 having an internal thread portion formed on the inner periphery, a circular hole formed in the second meshing portion N of the female screw protrusion portion M23, and a circular hole of a connecting member (not shown). The second meshing portion N can be held between the slider member M and the connecting member by being inserted into the screw and screwed using a screw. In addition, by forming the concave portion M24 and the overlapping portion N1 of the second meshing portion N in a vertically asymmetrical shape, the second meshing portion with respect to the slider member M so that the protruding direction of the second tooth portion N2 is inclined downward. Positioning means for positioning the mounting direction of N is configured.
また、隣接する第1歯部間の離間距離、及び隣接する第2歯部間をそれぞれ略2mmに設定したものを例示したが、これに限らず、任意の数値に設定してもよいことはいうまでもない。 In addition, the distance between the adjacent first tooth portions and the distance between the adjacent second tooth portions are exemplified as approximately 2 mm, but not limited to this, it may be set to an arbitrary numerical value. Needless to say.
また、上述した昇降装置を、静止部材を設けてなる椅子本体と、昇降部材に支持され椅子本体に対する高さ位置を調整可能な肘掛けとを備えた椅子に適用しても構わない。 Moreover, you may apply the raising / lowering apparatus mentioned above to the chair provided with the chair main body which provides a stationary member, and the armrest which is supported by the raising / lowering member and can adjust the height position with respect to a chair main body.
その他、各部の具体的構成についても上記実施形態に限られるものではなく、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。 In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
A…昇降天板付ワゴン
B…筐体
C…昇降天板
D…昇降装置
E…静止部材
F…昇降部材
G…噛合機構
H2…第1噛合部
H21…第1歯部
M…スライダ部材
M5…第1凹凸部
M51…第1凸部
M52…第1傾斜部
N…第2噛合部
N2…第2歯部
P…連動部材
P1…第2凹凸部
P11…第2凸部
P12…第2傾斜部
P41…ガイド用突起部
Q…連結部材
Q21…ガイド用溝
A ... Wagon B with lifting table ... Casing C ... Lifting table D ... Lifting device E ... Stationary member F ... Lifting member G ... Meshing mechanism H2 ... First meshing part H21 ... First tooth part M ... Slider member M5 ... First 1 uneven | corrugated | grooved part M51 ... 1st convex part M52 ... 1st inclination part N ... 2nd meshing part N2 ... 2nd tooth part P ... Interlocking member P1 ... 2nd uneven part P11 ... 2nd convex part P12 ... 2nd inclination part P41 ... Guide protrusion Q ... Connecting member Q21 ... Guide groove
Claims (9)
前記家具本体に設けられた静止部材と、当該静止部材に対して昇降移動し且つ前記家具構成部材を支持する昇降部材と、前記静止部材と前記昇降部材との間に設けられ前記昇降部材の昇降移動を規制するロック状態又は前記昇降部材の昇降移動を許容するロック解除状態を取り得る噛合機構とを具備してなり、
当該噛合機構が、前記静止部材にその高さ方向に沿って所定間隔で設けた複数の第1歯部を有する第1噛合部と、前記昇降部材にその高さ方向に沿って所定間隔で設けた複数の第2歯部を有する第2噛合部とを備え、前記ロック状態において複数の前記第1歯部と複数の前記第2歯部とを相互に噛合させるとともに、
少なくとも前記噛合機構が前記ロック状態にある場合に、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制する相対変位規制手段を具備し、
さらに、前記第2噛合部が、前記第1噛合部と噛合可能な噛合可能位置と、前記第1噛合部との噛合状態を解除し得る噛合解除位置との間で進退移動し得るものであり、前記相対変位規制手段が、少なくとも前記第2噛合部を前記昇降部材の内面部との間で挟持し得る挟持部材を用いてなり、前記第2噛合部を前記噛合可能位置に位置付けた場合に、前記第1噛合部及び前記第2噛合部を前記昇降部材の内面部と挟持部材との間に挟み込むことにより、前記第1噛合部と前記第2噛合部とが厚み方向に相対変位することを規制するものであることを特徴とする昇降装置。 A lifting device that can lift and lower furniture components such as a lifting table with respect to a furniture body such as a housing,
A stationary member provided in the furniture body, a lifting member that moves up and down relative to the stationary member and supports the furniture component, and a lifting member that is provided between the stationary member and the lifting member. An engagement mechanism capable of taking a locked state that restricts movement or an unlocked state that allows the lifting member to move up and down;
The meshing mechanism includes a first meshing portion having a plurality of first teeth provided at predetermined intervals along the height direction of the stationary member, and a predetermined interval along the height direction of the lifting member. A second meshing portion having a plurality of second tooth portions, and meshing the plurality of first tooth portions and the plurality of second tooth portions with each other in the locked state ,
A relative displacement restricting means for restricting relative displacement of the first meshing portion and the second meshing portion in the thickness direction when at least the meshing mechanism is in the locked state;
Further, the second meshing portion can move forward and backward between a meshable position where the second meshing portion can mesh with the first meshing portion and a mesh release position where the meshing state with the first meshing portion can be released. The relative displacement regulating means uses a clamping member that can clamp at least the second meshing portion with the inner surface of the elevating member, and the second meshing portion is positioned at the meshable position. The first meshing part and the second meshing part are relatively displaced in the thickness direction by sandwiching the first meshing part and the second meshing part between the inner surface part of the elevating member and the clamping member. Lifting device characterized by restricting .
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JP2889556B2 (en) * | 1997-07-17 | 1999-05-10 | 高橋金物株式会社 | Lifting bracket for wagon top plate |
JP3496139B2 (en) * | 2001-03-02 | 2004-02-09 | 第一工業株式会社 | Desk and chair leg height adjustment mechanism and its use |
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