JP5274930B2

JP5274930B2 - Folding table

Info

Publication number: JP5274930B2
Application number: JP2008202426A
Authority: JP
Inventors: 尚幸前川
Original assignee: Itoki Corp
Current assignee: Itoki Corp
Priority date: 2007-12-28
Filing date: 2008-08-05
Publication date: 2013-08-28
Anticipated expiration: 2028-08-05
Also published as: JP2009172358A

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding table which can brake so that a top panel does not jump rapidly when putting the top panel into folding. <P>SOLUTION: In a folding table which gears a modesty panel arranged on the lower side of a top panel rear section to the top panel by linkage mechanism while connecting the top panel to right and left leg bodies to be rotatable up and down, adopts a use position where the top panel is level and the modesty panel approaches the lower side of a top panel rear section and is drooping, and a folding position where the anterior part of the top panel bounds, the top panel is nearly parallel to the leg bodies, and the modesty panel follows the posterior border of both leg bodies, at least one pivot point 22 of the linkage mechanism incorporates elastic shock-absorbing mechanism 25 which prepares a projection 41 welding to the free end section of a plate spring on the other member while holding the base end section of the plate spring 38 on one member, and functions and puts a brake on rotation when the top panel approaches the rotation end of the folding position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、天板が上下に回動する折畳み式テーブルに係わり、更に詳しくは天板の跳ね上げ時に回動終端に至る前に回動に対して制動が作用する折畳み式テーブルに関するものである。 The present invention relates to a folding table in which a top plate rotates up and down, and more particularly to a folding table in which braking is applied to rotation before reaching the end of rotation when the top plate is flipped up. .

従来から、左右の脚体の上端部に、天板の下面両側部を上下回動可能に主軸にて連結して該天板が水平な使用姿勢と脚体に略平行な折畳み姿勢をとるようにするとともに、前記天板の後部下方に配した幕板を、天板後部下方に接近して垂下した使用姿勢と両脚体の後縁に沿った折畳み姿勢との間を移動可能に前記天板と連動させてリンク連結した折畳み式テーブルは、各種提供されている。 Conventionally, the top plate is connected to the upper ends of the left and right legs by a main shaft so that the lower side of the top plate can be pivoted up and down so that the top plate takes a horizontal use posture and a folding posture substantially parallel to the leg. In addition, the top plate is movable between a use posture in which the curtain plate arranged below the rear portion of the top plate is suspended close to the lower rear portion of the top plate and a folding posture along the rear edges of both legs. Various foldable tables that are linked to each other are provided.

例えば、特許文献１には、前記天板の後部下方に配した幕板を、左右両側において一対の上下リンク杆にて脚体にリンク連結するとともに、該上リンク杆と天板後部とを連動杆にてリンク連結して天板と幕板とを連動させ、前記天板と幕板の一連の折畳み動作中に常に天板後端部と幕板上端部との間に所定間隔以上の空隙を形成すべく、前記上下リンク杆及び連動杆の長さと枢着位置を設定した折畳み式テーブルの幕板連動装置が開示されている。 For example, in Patent Document 1, a curtain plate arranged below the rear portion of the top plate is linked to a leg by a pair of upper and lower link rods on both the left and right sides, and the upper link rod and the rear portion of the top plate are linked. The top plate and the curtain plate are interlocked by linking them with a scissors, and a gap of a predetermined distance or more is always provided between the top plate rear end portion and the curtain plate upper end portion during a series of folding operations of the top plate and the curtain plate. In order to form the above, there is disclosed a curtain table interlocking device for a folding table in which the length and pivot position of the upper and lower link rods and interlocking rods are set.

また、特許文献２には、天板の下面の左右両側部を、脚杆の上部に枢着して、前記天板を、前記脚杆の上方の水平な使用位置と、前記脚杆の後側に起立する垂直な折り畳み位置に回動させるように支持するとともに、前記天板の後部下方を覆うべく左右両脚杆の内寸法より長い左右幅に設定した幕板を、前記天板の回動と連動して、使用位置では、前記脚杆の後方に離間させ、前記折り畳み位置では、前記脚杆に接近させるように、幕板の下部を、脚杆の内側面にリンク杆で連結するとともに、幕板の上部を天板の下面後部の支持部材に枢着した構造の幕板付き折り畳みテーブルが開示されている。 Further, in Patent Document 2, both the left and right sides of the lower surface of the top plate are pivotally attached to the upper part of the leg rod, and the top plate is placed in a horizontal use position above the leg rod and behind the leg rod. A curtain plate that is supported to be pivoted to a vertical folding position that stands on the side and that is set to have a left and right width longer than the inner dimensions of the left and right leg rods so as to cover the lower rear portion of the top plate. The lower part of the curtain plate is connected to the inner side surface of the leg rod with a link rod so that it is separated from the rear side of the leg rod in the use position and in close proximity to the leg rod in the folded position. A folding table with a curtain plate having a structure in which the upper portion of the curtain plate is pivotally attached to a support member on the rear surface of the lower surface of the top plate is disclosed.

また、特許文献３には、水平の使用姿勢とほぼ垂直の折畳み格納姿勢との間を回動可能として、回動軸をもって支柱に軸着された天板を有する折畳みテーブルにおいて、前記回動軸を中心とする天板の回動を緩衝するために、内部に油が封入されたダンパー本体を天板に取付けるとともに、このダンパー本体の油により回動抵抗が与えられる回動軸を、前記支柱に取付けた折畳みテーブルが開示されている。 Further, Patent Document 3 discloses a folding table having a top plate that is pivotally mounted between a horizontal use posture and a substantially vertical folding storage posture and that is pivotally attached to a support column. In order to buffer the rotation of the top plate around the top, a damper main body in which oil is sealed is attached to the top plate, and the rotation shaft to which the rotation resistance is given by the oil of the damper main body A folding table is disclosed.

しかし、特許文献１、２に記載のものは、天板と幕板が連動しているので、幕板の重量が天板を跳ね上げる方向に作用し、天板から手を離すと急激に天板が回動することになる。そして、天板を脚体と略平行になるように跳ね上げた際、幕板が脚体と干渉してしまい衝突音の発生や傷付きの問題があった。これは、設計通りであれば、幕板が脚体に接触することはないが、リンク機構の遊びと可動部分の慣性力に起因している。この問題を回避するために、幕板や脚体に軟質の緩衝材を取付けるなどの対策を施しているものもあるが、幕板の衝撃や振動による衝突音の発生を完全に抑えることはできない。尚、前記幕板の横幅を左右の脚体間より狭く設定したものも存在するが、この場合には直接脚体へ幕板が衝突することはないが、リンク部材が幕板や脚体に衝突することがあり、やはり衝突音の発生は避けられないばかりでなく、左右に複数の折畳み式テーブルを並べて設置した際に、隣接する幕板間に大きな隙間が生じて幕板本来の視線を遮る機能に劣る。また、特許文献３に記載のものは、天板の回動軸にオイルダンパーを設けたので、天板の一方向の回動に対して抵抗力が作用するので、天板の急激な跳ね上がりと幕板の脚体への衝突は防止できるものの、オイルダンパー自体が高価であるためコスト高となる。
特開２００４−１２１４４０号公報特許第３３７４２３９号公報特許第３４７９８９６号公報 However, in the ones described in Patent Documents 1 and 2, since the top plate and the curtain plate are interlocked with each other, the weight of the curtain plate acts in the direction of jumping up the top plate. The plate will rotate. When the top plate is flipped up so as to be substantially parallel to the leg body, the curtain plate interferes with the leg body, and there is a problem of generation of a collision sound or damage. This is due to the play of the link mechanism and the inertial force of the movable part, although the curtain does not contact the leg if designed. In order to avoid this problem, some measures have been taken, such as attaching a soft cushioning material to the curtains and legs, but it is not possible to completely suppress the occurrence of collision noise due to the impact and vibration of the curtains. . There are some screens that have a narrower horizontal width than the left and right legs, but in this case the curtains do not directly collide with the legs, but the link member does not collide with the curtains or legs. Not only is the collision sound unavoidable, but when a plurality of folding tables are installed side by side, a large gap is created between adjacent curtains, and the original line of sight is lost. Inferior to blocking function. Moreover, since the thing of patent document 3 provided the oil damper in the rotation axis | shaft of the top plate, since resistance force acts with respect to rotation of the top plate in one direction, Although collision of the curtain with the leg can be prevented, the cost is high because the oil damper itself is expensive.
JP 2004-121440 A Japanese Patent No. 3374239 Japanese Patent No. 3479896

そこで、本発明が前述の状況に鑑み、解決しようとするところは、左右の脚体に天板を上下回動可能に連結するとともに、天板後部下方に配した幕板を天板とリンク機構で連動させ、該天板が水平で幕板が天板後部下方に接近して垂下した使用姿勢と、天板の前部を跳ね上げて該天板が脚体に略平行で幕板が両脚体の後縁に沿った折畳み姿勢をとる折畳み式テーブルにおいて、天板を折畳み姿勢とする際に、急激に天板が跳ね上がらないように制動をかけることが可能な折畳み式テーブルを提供する点にある。 Therefore, in view of the above-mentioned situation, the present invention intends to solve the problem that the top plate is connected to the left and right legs so that the top plate can be turned up and down, and the curtain plate arranged below the rear of the top plate is connected to the top plate and the link mechanism. The operating position is such that the top plate is horizontal and the curtain plate hangs close to the lower part of the rear of the top plate, and the front plate is flipped up so that the top plate is substantially parallel to the leg and the curtain plate is on both legs. In the folding table that takes a folding posture along the rear edge of the body, when the top plate is in the folding posture, a folding table that can be braked so that the top plate does not jump up suddenly is provided. is there.

本発明は、前述の課題解決のために、左右の脚体に天板を上下回動可能に連結するとともに、天板後部下方に配した幕板を天板とリンク機構で連動させ、該天板が水平で幕板が天板後部下方に接近して垂下した使用姿勢と、天板の前部を跳ね上げて該天板が脚体に略平行で幕板が両脚体の後縁に沿った折畳み姿勢をとる折畳み式テーブルにおいて、前記リンク機構の少なくとも一つの枢着部に、前記天板が折畳み姿勢又は使用姿勢の回転終端に近づくと機能して回転に制動を与える弾性緩衝機構を内蔵し、前記弾性緩衝機構は、前記枢着部を構成する一方の部材に板バネの基端部を保持するとともに、前記枢着部を構成する他方の部材に回転終端に近づくと前記板バネの遊端部に圧接する突起を該枢着部の回転中心から偏心した位置に設けたものである請求項１記載の折畳み式テーブルを構成した（請求項１）。 In order to solve the above-mentioned problems, the present invention connects the top plate to the left and right legs so that the top plate can be pivoted up and down, and the curtain plate arranged below the rear of the top plate is interlocked with the top plate by a link mechanism. Usage posture in which the plate is horizontal and the curtain is hanging close to the lower part of the back of the top plate, and the top of the top plate is flipped up so that the top plate is substantially parallel to the legs and the curtain is along the rear edge of both legs In a folding table that takes a folded position, an elastic buffer mechanism is provided at at least one pivot part of the link mechanism that functions as the top plate approaches the end of rotation of the folded position or the used position to brake the rotation. The elastic buffer mechanism holds the base end portion of the leaf spring on one member constituting the pivot attachment portion, and approaches the rotation end of the other member constituting the pivot attachment portion . It provided with projections for pressing the free end portion at a position eccentric from the rotation center of該枢attaching portion And configure a folding table according to claim 1, wherein the (claim 1).

具体的には、前記リンク機構が、前記脚体と幕板とを下リンク杆と上リンク杆にてリンク連結するとともに、該上リンク杆の中間部と天板後部とを連動杆にてリンク連結し、天板と幕板とを連動させる構造であり、前記連動杆の上端と天板後部との枢着部に前記弾性緩衝機構を内蔵してなることが好ましい（請求項２）。 Specifically, the link mechanism links the leg and the curtain plate with a lower link rod and an upper link rod, and links an intermediate portion of the upper link rod and a rear portion of the top plate with an interlocking rod. Preferably, the top plate and the curtain plate are linked to each other, and the elastic cushioning mechanism is preferably built in the pivotally attached portion between the upper end of the interlocking rod and the rear portion of the top plate.

ここで、前記弾性緩衝機構は、前記天板の両側下面に固定したブラケットに、円筒状の支軸と該支軸の外周面に突起を突設した制動部材を回転不能に保持するとともに、前記連動杆の上端部に前記支軸と突起を受け入れる軸孔部と、該軸孔部に連続した板バネ保持部を凹設し、該板バネ保持部に単又は複数の板バネの基端部を嵌合するとともに、前記制動部材の支軸と突起を軸孔部に挿入し、前記連動杆の上端部を貫通した回動軸を前記制動部材の支軸に貫通して前記ブラケットに螺合し、折畳み姿勢又は使用姿勢の回転終端に近づくと前記突起が板バネの遊端部に圧接するように設定してなることがより好ましい（請求項３）。 Here, the elastic shock-absorbing mechanism holds a cylindrical support shaft and a braking member having protrusions on the outer peripheral surface of the support shaft in a bracket fixed to both lower surfaces of the top plate so as not to rotate. A shaft hole portion that receives the support shaft and the protrusion at the upper end portion of the interlocking rod and a leaf spring holding portion that is continuous with the shaft hole portion are recessed, and a base end portion of one or a plurality of leaf springs is provided in the leaf spring holding portion. Are inserted into the shaft hole, and the rotation shaft penetrating the upper end of the interlocking rod is passed through the support shaft of the brake member and screwed into the bracket. It is more preferable that the protrusion is set so as to come into pressure contact with the free end portion of the leaf spring when approaching the rotation end of the folded or used posture.

更に、前記制動部材は、基台の一側面に前記支軸を突設するとともに、基台の他側面に複数のダボを突設し、前記ブラケットの支持片に前記回動軸を螺合する螺孔とその周囲に係合孔を穿設し、前記ダボを係合孔に嵌合して回転不能に保持してなることも好ましい（請求項４）。 Further, the brake member projects the support shaft on one side surface of the base, projects a plurality of dowels on the other side surface of the base, and screws the rotation shaft onto the support piece of the bracket. It is also preferable that an engagement hole is formed around the screw hole and the periphery thereof, and the dowel is fitted into the engagement hole and held non-rotatable (Claim 4).

更に、前記制動部材は、基台の一側面に前記支軸を突設するとともに、該支軸の外周部に先端に該支軸を中心とした円弧面を形成した突起を突設し、前記板バネの遊端部を前記突起の円弧面に乗り上げ可能とすることも好ましい（請求項５）。 Further, the braking member projects the support shaft on one side surface of a base, and projects a protrusion having an arc surface centered on the support shaft on the outer periphery of the support shaft. It is also preferable that the free end portion of the leaf spring can be ridden on the arc surface of the protrusion.

以上にしてなる請求項１に係る発明の折畳み式テーブルは、前記リンク機構の少なくとも一つの枢着部に、前記天板が折畳み姿勢又は使用姿勢の回転終端に近づくと機能して回転に制動を与える弾性緩衝機構を内蔵し、前記弾性緩衝機構は、前記枢着部を構成する一方の部材に板バネの基端部を保持するとともに、前記枢着部を構成する他方の部材に回転終端に近づくと前記板バネの遊端部に圧接する突起を該枢着部の回転中心から偏心した位置に設けたものであるので、天板の急激な跳ね上がりを防止することができ、しかも弾性緩衝機構は天板を使用姿勢から持ち上げる際には作用しないので初期動作が軽く、そして折畳み姿勢になる前に作用するので、ゆっくりと折畳み姿勢に停止させることができ、幕板が脚体に強く衝突することも防止できる。逆に、前記天板を折畳み姿勢から使用姿勢に戻す際には、前記板バネの弾性復元力を利用できるので、初期動作が軽くなるのである。
The foldable table of the invention according to claim 1 as described above functions to brake at least one pivotally attached portion of the link mechanism when the top plate approaches the rotation end of the folded or used posture. An elastic buffer mechanism is provided, and the elastic buffer mechanism holds a base end portion of a leaf spring in one member constituting the pivotally attached portion, and at the rotation end of the other member constituting the pivotally attached portion. approach and since the protrusions pressed against the free end of the leaf spring but on the position eccentric from the rotation center of該枢attaching portion, it is possible to prevent the sudden jump of the top plate, yet resilient cushioning mechanism Since it does not work when lifting the top plate from the use posture, the initial operation is light, and it works before it reaches the folded posture, so it can be slowly stopped in the folded posture, and the curtain plate strongly collides with the legs Also It can be stopped. On the contrary, when the top plate is returned from the folded posture to the use posture, the elastic restoring force of the leaf spring can be used, so that the initial operation is lightened.

請求項２によれば、前記リンク機構が、前記脚体と幕板とを下リンク杆と上リンク杆にてリンク連結するとともに、該上リンク杆の中間部と天板後部とを連動杆にてリンク連結し、天板と幕板とを連動させる構造であり、前記連動杆の上端と天板後部との枢着部に前記弾性緩衝機構を内蔵してなるので、天板と幕板の連動がスムーズであり、また弾性緩衝機構も組み込みやすく、天板の回動により直接相対的に回動する枢着部に弾性緩衝機構を内蔵したので、天板に対して直接的に制動を与えることができる。 According to claim 2, the link mechanism links the leg and the curtain plate with the lower link rod and the upper link rod, and the intermediate portion of the upper link rod and the rear portion of the top plate are linked to each other. The top plate and the curtain plate are linked to each other, and the elastic cushioning mechanism is built in the pivotal connection portion between the upper end of the interlocking rod and the rear portion of the top plate. The interlocking is smooth, and the elastic buffering mechanism is easy to incorporate, and the elastic buffering mechanism is built in the pivoting part that directly rotates relative to the top plate. be able to.

請求項３によれば、前記弾性緩衝機構は、前記天板の両側下面に固定したブラケットに、円筒状の支軸と該支軸の外周面に突起を突設した制動部材を回転不能に保持するとともに、前記連動杆の上端部に前記支軸と突起を受け入れる軸孔部と、該軸孔部に連続した板バネ保持部を凹設し、該板バネ保持部に単又は複数の板バネの基端部を嵌合するとともに、前記制動部材の支軸と突起を軸孔部に挿入し、前記連動杆の上端部を貫通した回動軸を前記制動部材の支軸に貫通して前記ブラケットに螺合し、折畳み姿勢又は使用姿勢の回転終端に近づくと前記突起が板バネの遊端部に圧接するように設定してなるので、弾性緩衝機構が連動杆と枢着部にコンパクトに収まるので外観性においてスッキリとし、また構造が簡単であるので安価に構成できる。 According to a third aspect of the present invention, the elastic shock-absorbing mechanism holds a cylindrical support shaft and a braking member having protrusions on the outer peripheral surface of the support shaft in a non-rotatable manner on brackets fixed to the lower surfaces on both sides of the top plate. In addition, a shaft hole portion that receives the support shaft and the protrusion at the upper end portion of the interlocking rod, and a leaf spring holding portion that is continuous with the shaft hole portion are recessed, and one or a plurality of leaf springs are provided in the leaf spring holding portion. The base end portion of the brake member, the support shaft and the protrusion of the braking member are inserted into the shaft hole portion, and the rotation shaft penetrating the upper end portion of the interlocking rod passes through the support shaft of the brake member and passes through the support shaft. Since the projection is set so that the projection comes into pressure contact with the free end of the leaf spring when it is screwed into the bracket and approaches the end of rotation in the folded or used position, the elastic buffering mechanism is compact on the interlocking rod and the pivoting part. Since it fits in, the appearance is neat and the structure is simple, so the structure is inexpensive. That.

請求項４によれば、前記制動部材は、基台の一側面に前記支軸を突設するとともに、基台の他側面に複数のダボを突設し、前記ブラケットの支持片に前記回動軸を螺合する螺孔とその周囲に係合孔を穿設し、前記ダボを係合孔に嵌合して回転不能に保持してなるので、制動部材として合成樹脂成形品を用いることができ、基台は支持片と連動杆の間に介在して摺動部材を兼ねるので、動作がスムーズであり、組立も単にダボを係合孔に嵌合するだけで回動不能に保持することができるとともに、突起の位置決めが正確にできる。 According to a fourth aspect of the present invention, the brake member projects the support shaft on one side surface of the base, projects a plurality of dowels on the other side surface of the base, and rotates the support piece of the bracket. Since a screw hole for screwing the shaft and an engagement hole are formed around the screw hole, and the dowel is fitted into the engagement hole and held unrotatable, a synthetic resin molded product may be used as a braking member. Since the base is interposed between the support piece and the interlocking rod and serves as a sliding member, the operation is smooth, and the assembly can be held non-rotatable simply by fitting the dowel into the engagement hole. And the positioning of the protrusions can be made accurately.

請求項５によれば、前記制動部材は、基台の一側面に前記支軸を突設するとともに、該支軸の外周部に先端に該支軸を中心とした円弧面を形成した突起を突設し、前記板バネの遊端部を前記突起の円弧面に乗り上げ可能となしたので、天板の回動に伴い、前記突起が板バネの遊端に圧接して回転に制動を与えた後、最終的に突起の円弧面に板バネの遊端部が乗り上げるので、その時点で板バネの弾性復元力が天板の回動方向に作用しなくなり、別途回転機構に設ける折畳み姿勢を維持するロック装置に負荷がかからなくなって、ロック装置の解除操作がスムーズになる。 According to a fifth aspect of the present invention, the braking member has a protrusion in which the support shaft protrudes from one side surface of a base and a circular arc surface centered on the support shaft is formed at the outer periphery of the support shaft. Since the free end of the leaf spring can run on the arc surface of the protrusion, the protrusion is pressed against the free end of the leaf spring as the top plate rotates to brake the rotation. After that, since the free end of the leaf spring finally rides on the arc surface of the protrusion, the elastic restoring force of the leaf spring does not act in the rotating direction of the top plate at that time, and the folding posture provided in the rotation mechanism is separately provided. The lock device to be maintained is no longer loaded, and the unlocking operation of the lock device becomes smooth.

次に、添付図面に示した実施形態に基づき、本発明を更に詳細に説明する。図１及び図２は本発明に係る折畳み式テーブルの使用姿勢を示し、図３及び図４は折畳み姿勢を示し、図５〜図１５は各部の詳細を示し、図中符号１は脚体、２は天板、３は幕板、４はリンク機構をそれぞれ示している。 Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. 1 and 2 show the usage posture of the folding table according to the present invention, FIGS. 3 and 4 show the folding posture, FIGS. 5 to 15 show the details of each part, and in FIG. 2 is a top plate, 3 is a curtain plate, and 4 is a link mechanism.

本実施形態の折畳み式テーブルは、左右の脚体１，１の上端部に、天板２を上下回動可能に連結するとともに、天板２の後部下方に配した幕板３を天板２とリンク機構４で連動させ、該天板２が水平で幕板３が天板２の後部下方に接近して垂下した使用姿勢（図１参照）と、天板２の前部を跳ね上げて該天板２が脚体１に略平行で幕板３が両脚体１，１の後縁に沿った折畳み姿勢（図３参照）をとることができるものである。尚、前述の使用姿勢と折畳み姿勢を維持するために、前記天板２の回動部５の近傍にロック機構を設け、両姿勢になったときに回動部５の回動がロックされるようになっている。 The folding table of the present embodiment has a top plate 2 connected to upper ends of the left and right legs 1 and 1 so that the top plate 2 can be turned up and down, and a curtain plate 3 arranged below the rear portion of the top plate 2 is attached to the top plate 2. And the link mechanism 4, and the top plate 2 is horizontal and the curtain plate 3 hangs close to the lower rear of the top plate 2 (see FIG. 1), and the front part of the top plate 2 is flipped up. The top plate 2 is substantially parallel to the leg 1, and the curtain plate 3 can be folded (see FIG. 3) along the rear edges of both the legs 1, 1. In addition, in order to maintain the above-mentioned use posture and folding posture, a lock mechanism is provided in the vicinity of the rotation portion 5 of the top plate 2, and the rotation of the rotation portion 5 is locked when both postures are reached. It is like that.

先ず、前記脚体１は、前後方向に向いた接地杆６の後端部から脚柱７が斜め前方に立ち上がった側面視略Ｌ字形を有し、アルミダイキャストで作製している。そして、前記脚体１の接地杆６の前後端部にはキャスター８，８を設け、移動可能となっている。更に、両側の前記脚体１，１の接地杆６，６は前端が外側へ平面視ハ字状に広がった形状になっており、前記天板２と幕板３が前記脚柱７の後縁に沿った折畳み姿勢で、複数の折畳み式テーブルを前後方向にスタッキング可能としている。 First, the leg 1 has a substantially L-shape in a side view in which a pedestal 7 rises obliquely forward from a rear end portion of a grounding rod 6 facing in the front-rear direction, and is manufactured by aluminum die casting. And the casters 8 and 8 are provided in the front-and-rear end part of the grounding rod 6 of the said leg 1, and it can move. Further, the grounding rods 6 and 6 of the leg bodies 1 and 1 on both sides have a shape in which the front ends spread outward in a plan view, and the top plate 2 and the curtain plate 3 are located behind the pedestal column 7. A plurality of folding tables can be stacked in the front-rear direction in a folding posture along the edge.

また、前記脚柱７の上端部内側に高さを二段階に調節して取付けることが可能な脚アーム９を設け、該脚アーム９は前記脚柱７に連結する連結部１０と該連結部１０の上端から内方へ屈曲した支持部１１を有し、該支持部１１を天板２の下面両側部に前後方向に向けて取付けたブラケット１２に前記回動部５を介して連結している。 Also, a leg arm 9 is provided on the inner side of the upper end portion of the pedestal column 7 so that the height can be adjusted in two stages, and the leg arm 9 is connected to the pedestal column 7 and the linking portion 10 A support portion 11 bent inwardly from the upper end of 10, and the support portion 11 is connected to a bracket 12 attached to both sides of the lower surface of the top plate 2 in the front-rear direction via the rotating portion 5. Yes.

次に、前記リンク機構４を、図１〜図９に基づいて説明する。前記天板２の後部下方に配した幕板３を、左右両側において一対の下リンク杆１３と上リンク杆１４にて前記脚柱７の内側にリンク連結するとともに、該上リンク杆１４の中間部と天板２後部とを連動杆１５にてリンク連結して天板２と幕板３とを連動させている。また、前記下リンク杆１３と上リンク杆１４の両端部は枢着部にて脚体１と幕板３にリンク連結されるが、幕板３には該幕板３の両側部に取付ける取付杆１６の上下端部に枢着部にて連結する。全ての枢着部は垂直面内で上下に回動するようになっている。そして、前記幕板３を前記脚体１の脚柱７の後縁に沿って折畳んだ側面視状態において、前記上下リンク杆１３，１４が前記脚柱７の内側に略隠蔽されて、殆ど見えないようにしている。 Next, the link mechanism 4 will be described with reference to FIGS. The curtain plate 3 disposed below the rear portion of the top plate 2 is linked to the inside of the pillar 7 by a pair of lower link rods 13 and upper link rods 14 on both the left and right sides, and between the upper link rods 14. The top plate 2 and the rear plate 2 are linked by a linkage 15 to link the top plate 2 and the curtain plate 3 together. Further, both ends of the lower link rod 13 and the upper link rod 14 are linked and connected to the leg 1 and the curtain plate 3 at the pivotally attached portion. The curtain plate 3 is attached to both sides of the curtain plate 3. It connects with the upper-lower-end part of the ridge 16 by a pivot part. All the pivot parts are adapted to rotate up and down in a vertical plane. When the curtain plate 3 is folded along the rear edge of the leg column 7 of the leg 1, the upper and lower link rods 13 and 14 are substantially concealed inside the leg column 7, It is not visible.

ここで、前記リンク機構４を組み立てた後に、前記幕板３を取付杆１６に連結するようになっている。具体的には、図５に示すように、前記幕板３の前面側の両側部に上下方向に固定した補強部材３Ａの上部にネジを軽く締めて突出させ、下部に螺孔を形成しておき、前記取付杆１６の上部にダルマ形の上孔３Ｂを形成するとともに、下部の下孔３Ｃに緩くネジ３Ｄを螺合した状態で、補強部材３Ａの上部のネジを上孔３Ｂに挿入して係止した後締付け、それから下部のネジ３Ｄを補強部材３Ａの螺孔に螺合するのである。 Here, after the link mechanism 4 is assembled, the curtain plate 3 is connected to the mounting rod 16. Specifically, as shown in FIG. 5, a screw is lightly tightened and protruded at the upper part of the reinforcing member 3A fixed in the vertical direction on both sides on the front side of the curtain plate 3, and a screw hole is formed at the lower part. In addition, a Dalma-shaped upper hole 3B is formed in the upper part of the mounting rod 16, and the upper screw of the reinforcing member 3A is inserted into the upper hole 3B with the screw 3D loosely screwed into the lower hole 3C in the lower part. Then, after tightening, the lower screw 3D is screwed into the screw hole of the reinforcing member 3A.

更に詳しくは、図１、図５及び図６に示すように、前記下リンク杆１３の一端は前記脚柱７の内側に直接枢着部１７にて上下回動可能に連結するとともに、他端は前記取付杆１６の下端に枢着部１８にて上下回動可能に連結している。一方、前記上リンク杆１４の一端は前記脚柱７に取付けた脚アーム９の連結部１０に枢着部１９にて上下回動可能に連結するとともに、他端は前記取付杆１６の上端に枢着部２０にて上下回動可能に連結している。また、前記連動杆１５の下端は前記上リンク杆１４の中間部に枢着部２１にて上下回動可能に連結するとともに、上端は前記ブラケット１２の後部に枢着部２２にて上下回動可能に連結している。 More specifically, as shown in FIGS. 1, 5, and 6, one end of the lower link rod 13 is directly connected to the inside of the pedestal 7 so as to be pivotable up and down at a pivoting portion 17, and the other end. Is connected to the lower end of the mounting rod 16 by a pivot 18 so as to be vertically rotatable. On the other hand, one end of the upper link rod 14 is connected to a connecting portion 10 of a leg arm 9 attached to the pedestal column 7 so as to be pivotable up and down at a pivoting portion 19, and the other end is connected to an upper end of the attachment rod 16. It is connected to the pivoting portion 20 so as to be vertically rotatable. Further, the lower end of the interlocking rod 15 is connected to the middle portion of the upper link rod 14 so as to be pivotable up and down at a pivoting portion 21, and the upper end is pivoted up and down at the rear portion of the bracket 12 at a pivoting portion 22. It is connected as possible.

そして、前記下リンク杆１３の一端と前記脚体１との枢着部１７に下ストッパー２３を設け、前記幕板３が折畳み姿勢と使用姿勢の両回転終端で当止して回転を規制する。また、前記上リンク杆１４の一端と前記脚体１との枢着部１９に上ストッパー２４を設け、前記幕板３が折畳み姿勢の回転終端で当止して回転を規制する。更に、前記連動杆１５の上端とブラケット１２との枢着部２２に弾性緩衝機構２５を設け、前記天板２が折畳み姿勢の回転終端に近づくと機能して回転に制動を与えて、該天板２の急激な跳ね上がりを防止している。 And the lower stopper 23 is provided in the pivot 17 of the one end of the said lower link rod 13, and the said leg 1, and the said curtain 3 stops at both rotation termination | terminus of a folding attitude | position and a use attitude | position, and controls rotation. . Further, an upper stopper 24 is provided at a pivotal attachment portion 19 between one end of the upper link rod 14 and the leg 1, and the curtain 3 stops at the end of rotation in the folded position to restrict rotation. Further, an elastic buffer mechanism 25 is provided at the pivotal attachment portion 22 between the upper end of the interlocking rod 15 and the bracket 12, and functions when the top plate 2 approaches the end of rotation in the folded position to brake the rotation. The board 2 is prevented from suddenly jumping up.

先ず、前記下ストッパー２３は、図２、図４、図５及び図７に示すように、前記脚体１に設けた第１カム部２６と前記下リンク杆１３に設けた第２カム部２７が、折畳み姿勢と使用姿勢の両回転終端で回転方向に係合するようになっている。前記第１カム部２６は、前記脚柱７の内面に形成した円形凹部２６Ａの内周部の一部に略扇形の当止部２６Ｂを突設したものであり、前記第２カム部２７は、前記第１カム部２６の当止部２６Ｂ以外の凹部２６Ａに回転可能に嵌合する軸部２７Ａの外周部の一部に前記当止部２６Ｂに回転方向に当止する当止部２７Ｂを突設したものである。図１、図２及び図７（ａ）は使用姿勢、図３、図４及び図７（ｂ）は折畳み姿勢をそれぞれ示している。 First, as shown in FIGS. 2, 4, 5, and 7, the lower stopper 23 includes a first cam portion 26 provided on the leg 1 and a second cam portion 27 provided on the lower link rod 13. However, it engages in the rotational direction at both rotation ends of the folding posture and the use posture. The first cam portion 26 has a substantially sector-shaped stopper 26B protruding from a part of an inner peripheral portion of a circular recess 26A formed on the inner surface of the pedestal 7, and the second cam portion 27 is A stopper portion 27B that stops against the stopper portion 26B in the rotational direction is provided at a part of the outer peripheral portion of the shaft portion 27A that is rotatably fitted to the recess portion 26A other than the stopper portion 26B of the first cam portion 26. It is a projecting one. 1, FIG. 2 and FIG. 7 (a) show the use posture, and FIG. 3, FIG. 4 and FIG. 7 (b) show the folded posture, respectively.

尚、前記脚アーム９は上下二段に高さを調節できるようになっており、前記上リンク杆１４は該脚アーム９の連結部１０に枢着しているので、下リンク杆１３も上下二段に高さ変更可能に取付けることができるように、前記第１カム部２６は上下二箇所に同一形状のものを穿設している。そして、前記下リンク杆１３の第２カム部２７を前記脚柱７の第１カム部２６に嵌合した状態で、軸部２７Ａを貫通させた軸ボルト２８を第１カム部２６の凹部２６Ａ内に螺合して前記枢着部１７を構成している。 The height of the leg arm 9 can be adjusted in two steps up and down, and the upper link rod 14 is pivotally attached to the connecting portion 10 of the leg arm 9, so that the lower link rod 13 is also vertically movable. The first cam portion 26 has the same shape in two upper and lower positions so that the height can be changed in two stages. Then, in a state in which the second cam portion 27 of the lower link rod 13 is fitted to the first cam portion 26 of the pedestal 7, the shaft bolt 28 penetrating the shaft portion 27A is inserted into the recess 26A of the first cam portion 26. The pivot portion 17 is configured by being screwed therein.

次に、前記上ストッパー２４は、図２、図４、図５及び図８に示すように、前記脚体１に突設した突出部２９と前記上リンク杆１４に設けた第３カム部３０が、折畳み姿勢の回転終端で回転方向に係合するようになっている。具体的には、前記突出部２９は、前記脚アーム９の連結部１０であって、前記枢着部１９の近傍の上部に突設した円筒形のリブであり、その内部で前記連結部１０を脚柱７にネジ止めしている。また、前記第３カム部３０は、前記上リンク杆１４の一端に設けた円柱部３１の先端部に前記突出部２９を逃がす切欠部３２を形成し、該切欠部３２の一方の端部３３が、前記幕板３が折畳み姿勢の回動終端で前記突出部２９の側面に当止するようになっている（図４、図８（ｂ）参照）。尚、前記上リンク杆１４の円柱部３１を貫通させた軸ボルト３４を前記脚アーム９の連結部１０に螺合して前記枢着部１９を構成している。 Next, as shown in FIGS. 2, 4, 5, and 8, the upper stopper 24 includes a protruding portion 29 protruding from the leg 1 and a third cam portion 30 provided on the upper link rod 14. However, it engages in the direction of rotation at the end of rotation in the folded position. Specifically, the protruding portion 29 is a connecting portion 10 of the leg arm 9 and is a cylindrical rib projecting at an upper portion in the vicinity of the pivot attachment portion 19. Is screwed to the pedestal 7. Further, the third cam portion 30 is formed with a notch portion 32 for escaping the protruding portion 29 at a tip portion of a columnar portion 31 provided at one end of the upper link rod 14, and one end portion 33 of the notch portion 32. However, the curtain plate 3 comes into contact with the side surface of the protruding portion 29 at the end of rotation in the folded position (see FIGS. 4 and 8B). Note that the pivot bolt 19 is configured by screwing a shaft bolt 34 penetrating the cylindrical portion 31 of the upper link rod 14 into the connecting portion 10 of the leg arm 9.

また、前記取付杆１６の上下端の筒部３５，３５にそれぞれ軸ボルト３６，３６を貫通させて、前記下リンク杆１３と上リンク杆１４の他端に螺合して枢着部１８，２０を構成している。また、前記上リンク杆１４の中間部を貫通させた軸ボルト３７を前記連動杆１５の下端に螺合して前記枢着部２１を構成している。尚、図示しないが、各枢着部において、各杆部材に形成した通孔内に該通孔よりも若干長い円筒部材を回動可能に嵌挿し、該円筒部材に軸ボルトを挿通し、該軸ボルトを相手部材に螺合して円筒部材を締め付けて固定している。 Further, shaft bolts 36, 36 are respectively passed through the upper and lower cylindrical portions 35, 35 of the mounting rod 16, and are screwed into the other ends of the lower link rod 13 and the upper link rod 14, and the pivoting portions 18, 20 is constituted. Further, the pivot bolt 21 is configured by screwing a shaft bolt 37 penetrating the intermediate portion of the upper link rod 14 into the lower end of the interlock rod 15. Although not shown in the drawings, a cylindrical member that is slightly longer than the through hole is rotatably fitted in each through hole formed in each flange member, and a shaft bolt is inserted into the cylindrical member. The cylindrical bolt is fastened and fixed by screwing the shaft bolt into the mating member.

そして、本発明の第１実施形態に係る前記弾性緩衝機構２５は、図６及び図９に示すように、前記連動杆１５の上端部と天板２後部との枢着部２２に内蔵している。前記弾性緩衝機構２５は、前記連動杆１５の上端部に板バネ３８の基端部を保持するとともに、前記ブラケット１２の一部に形成した支持片３９に回動不能に設けた制動部材４０に、前記板バネ３８の遊端部に圧接する突起４１を設けたものである。つまり、前記天板２の前部が跳ね上がって折畳み姿勢の回転終端に近づくと、前記突起４１が板バネ３８の遊端部に圧接して回転に制動を与えるのである。 And the said elastic buffer mechanism 25 which concerns on 1st Embodiment of this invention is incorporated in the pivoting part 22 of the upper end part of the said interlocking | linkage collar 15, and the rear part of the top plate 2, as shown in FIG.6 and FIG.9. Yes. The elastic shock-absorbing mechanism 25 holds the base end portion of the leaf spring 38 at the upper end portion of the interlocking rod 15, and is attached to a braking member 40 provided in a non-rotatable manner on a support piece 39 formed on a part of the bracket 12. A protrusion 41 is provided in pressure contact with the free end of the leaf spring 38. That is, when the front part of the top plate 2 jumps up and approaches the end of rotation of the folded posture, the protrusion 41 presses against the free end part of the leaf spring 38 and applies braking to the rotation.

更に詳しくは、前記弾性緩衝機構２５は、前記天板２の両側下面に固定したブラケット１２の支持片３９に、円筒状の支軸４２と該支軸４２の外周面に突起４１を突設した制動部材４０を回転不能に保持するとともに、前記連動杆１５の上端部に前記支軸４２と突起４１を受け入れる軸孔部４３と、該軸孔部４３に連続し連動杆１５の長手方向に延びたスリット状の板バネ保持部４４を凹設し、該板バネ保持部４４に単又は複数の板バネ３８の基端部を嵌合するとともに、前記制動部材４０の支軸４２と突起４１を軸孔部４３に挿入し、前記連動杆１５の上端部に形成した軸孔４５を貫通した回動軸４６を、前記制動部材４０の支軸４２の中心孔４７に貫通して前記ブラケット１２の支持片３９に螺合して構成し、折畳み姿勢の回転終端に近づくと前記突起４１が板バネ３８の遊端部に圧接するように、前記突起４１の角度を設定している。ここで、前記板バネ保持部４４は、スリット状部分から前記軸孔部４３にかけて円弧状に拡開した形状、例えば銀杏の葉のような形状になっており、前記板バネ３８が切り返し屈曲されても折損することがないようにしている。 More specifically, the elastic buffer mechanism 25 has a cylindrical support shaft 42 and a protrusion 41 projecting from the outer peripheral surface of the support shaft 42 on the support piece 39 of the bracket 12 fixed to both lower surfaces of the top plate 2. The brake member 40 is held in a non-rotatable manner, and a shaft hole portion 43 that receives the support shaft 42 and the protrusion 41 at the upper end portion of the interlocking rod 15, and extends in the longitudinal direction of the interlocking rod 15 continuously to the shaft hole portion 43. A slit-shaped leaf spring holding portion 44 is recessed, and the base end portion of one or a plurality of leaf springs 38 is fitted into the leaf spring holding portion 44, and the support shaft 42 and the protrusion 41 of the braking member 40 are connected to each other. A rotation shaft 46 inserted into the shaft hole 43 and passing through the shaft hole 45 formed in the upper end portion of the interlocking rod 15 passes through the center hole 47 of the support shaft 42 of the braking member 40 and passes through the center hole 47 of the brake member 12. It is constructed by screwing on the support piece 39 and close to the end of rotation in the folded position. Ku and the projection 41 is to be press free end of the leaf spring 38, and sets the angle of the projection 41. Here, the leaf spring holding portion 44 has a shape that expands in an arc shape from the slit-like portion to the shaft hole portion 43, for example, a shape like a ginkgo leaf, and the leaf spring 38 is bent back and forth. Even so, it won't break.

また、前記板バネ３８の基端部を前記板バネ保持部４４に確実に保持するために、板バネ３８と板バネ保持部４４とを凹凸嵌合する構造、前記連動杆１５の前後面から板バネ保持部４４に突出するようにネジを螺合して、ネジの先端で板バネ３８の基端部を圧接する構造、前記連動杆１５の側面に粘着テープを貼って板バネ保持部４４を塞ぐ構造、板バネ保持部４４の開口側にキャップを装着する構造等を採用することができる。 Further, in order to securely hold the base end portion of the leaf spring 38 to the leaf spring holding portion 44, a structure in which the leaf spring 38 and the leaf spring holding portion 44 are concavo-convexly fitted, from the front and rear surfaces of the interlocking rod 15. A structure in which a screw is screwed so as to protrude into the leaf spring holding portion 44, and a proximal end portion of the leaf spring 38 is pressed into contact with the tip of the screw, and an adhesive tape is attached to the side surface of the interlocking rod 15 to place the leaf spring holding portion 44. For example, a structure in which a cap is attached to the opening side of the leaf spring holding portion 44 can be employed.

また、前記制動部材４０は、基台４８の一側面に前記支軸４２を突設するとともに、基台４８の他側面に複数のダボ４９，…を突設し、前記ブラケット１２の支持片３９に前記回動軸４６を螺合する螺孔５０とその周囲に係合孔５１，…を穿設し、前記ダボ４９，…を係合孔５１，…に嵌合して回転不能に保持する。ここで、前記回動軸４６は、先端部に前記螺孔５０に螺合する螺軸５２を形成している。 Further, the brake member 40 has the support shaft 42 projecting from one side surface of the base 48 and a plurality of dowels 49... Projecting from the other side surface of the base 48. Are engaged with the engagement holes 51, and the dowels 49 are fitted to the engagement holes 51 so as to be unrotatable. . Here, the rotating shaft 46 forms a screw shaft 52 that is screwed into the screw hole 50 at the tip.

図９（ａ）は天板２が水平な使用姿勢を示し、図９（ｂ）は天板２の前部を跳ね上げた折畳み姿勢を示している。前記天板２が使用姿勢から前部を跳ね上げると、前記突起４１は天板２の回転に伴って前記連動杆１５の軸孔部４３内で相対的に回転し、やがて折畳み姿勢になる途中に中央部にある板バネ３８の遊端部に当接し、回転しながら板バネ３８を弾性変形させる。この板バネ３８の弾性復元力が制動力となって天板２の跳ね上げ回転に制動を与え、折畳み姿勢になる際の衝撃を和らげるのである。ここで、前記板バネ保持部４４に装着する板バネ３８の枚数を増やすことにより、弾性復元力を増大させることができる。本発明に係る折畳み式テーブルの横幅は何種類かあり、前記天板２の横幅が長くなるとその重量が増すので、それに応じて板バネ３８の枚数を増やして調節するのである。 FIG. 9A shows a use posture in which the top plate 2 is horizontal, and FIG. 9B shows a folded posture in which the front portion of the top plate 2 is flipped up. When the top plate 2 jumps up from the use posture, the projection 41 relatively rotates in the shaft hole portion 43 of the interlocking rod 15 with the rotation of the top plate 2 and eventually becomes a folded posture. In contact with the free end of the leaf spring 38 at the center, the leaf spring 38 is elastically deformed while rotating. The elastic restoring force of the leaf spring 38 acts as a braking force to apply the braking to the flip-up rotation of the top plate 2 and relieve the impact when the folding posture is taken. Here, the elastic restoring force can be increased by increasing the number of leaf springs 38 attached to the leaf spring holding portion 44. There are several widths of the folding table according to the present invention, and the weight of the top plate 2 increases as the width of the top plate 2 increases. Therefore, the number of leaf springs 38 is increased and adjusted accordingly.

以上のように、下ストッパー２３と上ストッパー２４及び弾性緩衝機構２５により、天板２と幕板３を連動させて使用姿勢から折畳み姿勢にする際に、回転終端の前から弾性緩衝機構２５による制動力が作用し、また回転終端では下ストッパー２３と上ストッパー２４による回動規制が作用することにより、天板２と幕板３を設計通りの正確な位置で静止させることができ、天板２が幕板３の重量によって前部が急に跳ね上がることを防止するとともに、幕板３が脚体１，１に衝突することを防止するのである。逆に、前記天板２を折畳み姿勢から使用姿勢に戻す際には、前記板バネ３８の弾性復元力を利用できるので、初期動作が軽くなるのである。 As described above, when the top plate 2 and the curtain plate 3 are interlocked with each other by the lower stopper 23, the upper stopper 24, and the elastic buffer mechanism 25 to be folded from the use posture, the elastic buffer mechanism 25 is used from the front of the rotation end. A braking force is applied, and at the end of rotation, a rotation restriction by the lower stopper 23 and the upper stopper 24 is applied, so that the top plate 2 and the curtain plate 3 can be stopped at the exact positions as designed. 2 prevents the front part from abruptly jumping up due to the weight of the curtain plate 3, and prevents the curtain plate 3 from colliding with the legs 1, 1. On the contrary, when the top plate 2 is returned from the folded position to the used position, the elastic restoring force of the leaf spring 38 can be used, so that the initial operation is lightened.

次に、本発明の第２実施形態に係る前記弾性緩衝機構２５を図１０〜図１５に基づいて説明する。本実施形態も基本的には前記第１実施形態と同様であるので、同一構成には同一符号を付してその説明は省略する。本実施形態の制動部材４０は、基台４８の一側面に支軸４２を突設するとともに、該支軸４２の外周部に先端に該支軸４２を中心とした円弧面５３を形成した突起４１を突設し、前記板バネ３８の遊端部を前記突起４１の円弧面５３に乗り上げ可能となしている。そして、前記連動杆１５は、上端部に膨出部５４を形成し、該膨出部５４に前記支軸４２と突起４１を受け入れる軸孔部４３と、該軸孔部４３に連続し連動杆１５の長手方向に延びた板バネ保持部４４を凹設している。 Next, the elastic buffer mechanism 25 according to the second embodiment of the present invention will be described with reference to FIGS. Since this embodiment is also basically the same as the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted. The braking member 40 according to the present embodiment has a support shaft 42 protruding from one side surface of a base 48 and a protrusion having an arc surface 53 centered on the support shaft 42 at the outer periphery of the support shaft 42. 41 is provided so that the free end portion of the leaf spring 38 can run on the arc surface 53 of the projection 41. The interlocking rod 15 is formed with a bulging portion 54 at the upper end, a shaft hole portion 43 for receiving the support shaft 42 and the protrusion 41 in the bulging portion 54, and a continuous linking rod in the shaft hole portion 43. A leaf spring holding portion 44 extending in the longitudinal direction of 15 is recessed.

前記板バネ保持部４４は、図１３及び図１４に示すように、板バネ３８を所定枚数重ねた状態でその基端を係止する突片５５を備えるとともに、板バネ３８を屈曲状態に保持できるように、該板バネ３８の中間部を当止する単又は複数の当止部５６を突設し、更に前記膨出部５４の中心部に形成した軸孔４５の近傍で前記軸孔部４３に面する位置に、前記板バネ３８の遊端を当止する受部５７を一体形成している。また、前記板バネ３８が長手方向にずれないように、該板バネ３８の基部の一側に切欠部５８を形成し、該切欠部５８を前記板バネ保持部４４の底部に交差するように突設したリブ５９に係合させている。 As shown in FIGS. 13 and 14, the leaf spring holding portion 44 includes a protruding piece 55 that locks the base end in a state where a predetermined number of leaf springs 38 are stacked, and holds the leaf spring 38 in a bent state. In order to be able to do so, a single or a plurality of locking portions 56 for locking the intermediate portion of the leaf spring 38 are provided so as to protrude further, and the shaft hole portion is formed in the vicinity of the shaft hole 45 formed at the center of the bulging portion 54 A receiving portion 57 that integrally stops the free end of the leaf spring 38 is integrally formed at a position facing 43. Further, a cutout portion 58 is formed on one side of the base portion of the leaf spring 38 so that the leaf spring 38 is not displaced in the longitudinal direction, and the cutout portion 58 intersects the bottom portion of the leaf spring holding portion 44. It is engaged with the protruding rib 59.

本実施形態の弾性緩衝機構２５は、前記天板２の前部を跳ね上げて、折畳み姿勢の回転終端に近づくと、先ず前記突起４１の前進端が板バネ３８の遊端部を圧接し、板バネ３８を弾性力に抗して回転することにより制動力が作用し、更に折畳み姿勢になると前記突起４１の円弧面５３に板バネ３８の遊端部が乗り上げると、もはや板バネ３８の弾性力は回転方向に作用しなくなる。本実施形態の場合、前記天板２が折畳み姿勢では、該天板２の回動機構に板バネ３８の弾性力が作用しないので、折畳み姿勢を維持するロック装置に負荷がかからず、ロック装置の解除操作がスムーズになるのである。 When the elastic shock absorbing mechanism 25 of the present embodiment jumps up the front part of the top plate 2 and approaches the rotation end of the folded posture, the forward end of the protrusion 41 first presses the free end part of the leaf spring 38, When the leaf spring 38 is rotated against the elastic force, a braking force is applied. When the leaf spring 38 rides on the arcuate surface 53 of the projection 41 when the leaf spring 38 is folded, the elasticity of the leaf spring 38 is no longer required. The force no longer acts in the direction of rotation. In the case of the present embodiment, when the top plate 2 is in the folded position, the elastic force of the leaf spring 38 does not act on the rotation mechanism of the top plate 2, so that the lock device that maintains the folded position is not loaded, and the lock The release operation of the device becomes smooth.

また、前記ブラケット１２を覆うカバー６０には、図１５に示すように、制動部材４０を逃がすためのＵ字状の開口部６１を設けているが、本発明に係る折畳み式テーブルでは幕板３を設けない構成のものもある。前記幕板３の有無に係わらず、製造コスト削減のため、共通のカバー６０を用いる場合、前記開口部６１が開いたままだと、内部の支持片３９等が露出して外観性を損なう。そこで、前記制動部材４０の基台４８の形状を、前記開口部６１を埋めるＵ字形に成形し、幕板３を設けない場合でも、前記制動部材４０を支持片３９に取付けて開口部６１を閉鎖するようにすることも好ましい。尚、第２実施形態の場合、前記リンク機構４を組み立てた後、カバー６０を装着することは、連動杆１５の上端部の形状から困難になるが、制動部材４０をカバー６０の開口部６１の形状と一致させることにより、カバー６０を装着した後、制動部材４０やその他のリンク機構４を組み立てることが可能となる。 Further, as shown in FIG. 15, the cover 60 covering the bracket 12 is provided with a U-shaped opening 61 for allowing the braking member 40 to escape. However, in the folding table according to the present invention, the curtain plate 3 is provided. Some configurations do not provide the Regardless of the presence or absence of the curtain plate 3, in order to reduce the manufacturing cost, when the common cover 60 is used, if the opening 61 is left open, the internal support piece 39 and the like are exposed and the appearance is impaired. Therefore, even when the base plate 48 of the braking member 40 is formed in a U-shape that fills the opening 61 and the curtain plate 3 is not provided, the braking member 40 is attached to the support piece 39 so that the opening 61 is formed. It is also preferable to close it. In the case of the second embodiment, it is difficult to attach the cover 60 after assembling the link mechanism 4 due to the shape of the upper end portion of the interlocking rod 15, but the braking member 40 is connected to the opening 61 of the cover 60. Thus, after the cover 60 is mounted, the braking member 40 and other link mechanisms 4 can be assembled.

次に、本発明の第３実施形態に係る前記弾性緩衝機構２５を図１６〜図１８に基づいて説明する。本実施形態も基本的には前記第１例及び第２例と同様であるので、同一構成には同一符号を付してその説明は省略する。また、この第３実施形態に係る前記弾性緩衝機構２５の作用も前述のものと同様である。本実施形態の制動部材４０は、基台４８の一側面に支軸４２を突設するとともに、該支軸４２の外周部に先端に該支軸４２を中心とした円弧面５３を形成した突起４１を突設し、前記板バネ３８の遊端部を前記突起４１の円弧面５３に乗り上げ可能となしている。ここで、前記制動部材４０は、基台４８の背面に突設したダボ４９，…を、ブラケット１３の支持片３９に形成した係合孔５１，…に抜止め嵌合するために、直径方向に位置する一対のダボ４９，４９に係合爪６２をそれぞれ突設している。また、制動部材４０と支持片３９との接合面には大きな剪断力が加わるので、直径方向に位置する一対のダボ４９，４９の断面形状を、半径方向に延びた形状としている。 Next, the elastic buffer mechanism 25 according to a third embodiment of the present invention will be described with reference to FIGS. Since this embodiment is also basically the same as the first example and the second example, the same components are denoted by the same reference numerals and the description thereof is omitted. The operation of the elastic buffer mechanism 25 according to the third embodiment is the same as that described above. The braking member 40 according to the present embodiment has a support shaft 42 protruding from one side surface of a base 48 and a protrusion having an arc surface 53 centered on the support shaft 42 at the outer periphery of the support shaft 42. 41 is provided so that the free end portion of the leaf spring 38 can run on the arc surface 53 of the projection 41. Here, the braking member 40 has a diametrical direction so that dowels 49,... Projecting from the back surface of the base 48 are fitted in engagement holes 51,. The engaging claws 62 project from the pair of dowels 49 and 49 located at the positions. Further, since a large shearing force is applied to the joint surface between the braking member 40 and the support piece 39, the cross-sectional shape of the pair of dowels 49, 49 positioned in the diametrical direction is a shape extending in the radial direction.

そして、前記連動杆１５は、上端部に膨出部５４を形成するとともに、中央部の横幅を拡張して拡幅部６３を形成し、該膨出部５４に前記支軸４２と突起４１を受け入れる軸孔部４３と、前記拡幅部６３に該軸孔部４３に連続し連動杆１５の長手方向に延びた板バネ保持部４４を凹設し、該板バネ保持部４４に閉塞板６４を嵌着して板バネ３８，…が外れないように保持している。 The interlocking rod 15 forms a bulging portion 54 at the upper end portion and expands the lateral width of the central portion to form a widening portion 63, and receives the support shaft 42 and the protrusion 41 in the bulging portion 54. A plate spring holding portion 44 that is continuous with the shaft hole portion 43 and extends in the longitudinal direction of the interlocking rod 15 is recessed in the shaft hole portion 43 and the widened portion 63, and a closing plate 64 is fitted into the plate spring holding portion 44. The leaf springs 38 are held so that they do not come off.

前記板バネ保持部４４は、図１６及び図１７に示すように、前記拡幅部６３内に所定枚数重ねた状態の板バネ３８，…の中央部を当止する半円筒状の当止部６５を突設するとともに、それより基端側の反対面を当止するブロック状の当止部６６を突設し、更に該当止部６６と同じ側で前記当止部６５より先端側を当止するリブ状の当止部６７を突設している。前記当止部６５〜６７により板バネ３８，…を屈曲状態で保持する。更に、前記膨出部５４の中心部に形成した軸孔４５の近傍で前記軸孔部４３に面する位置に、前記板バネ３８の遊端を当止する受部５７を一体形成している。 As shown in FIGS. 16 and 17, the leaf spring holding portion 44 is a semi-cylindrical stopper portion 65 that stops the central portion of the leaf springs 38,. And a block-shaped stopper 66 that stops the opposite surface of the base end side, and further, the front end side of the stopper 65 is stopped on the same side as the corresponding stopper 66. A rib-shaped stopper 67 is provided to project. The leaf springs 38 are held in a bent state by the stoppers 65 to 67. Further, a receiving portion 57 for abutting the free end of the leaf spring 38 is integrally formed at a position facing the shaft hole portion 43 in the vicinity of the shaft hole 45 formed in the central portion of the bulging portion 54. .

また、前記板バネ保持部４４の内部に、複数の箱状の係合筒６８，…を突設し、該係合筒６８の対向壁面に切欠孔６９，６９を形成している。一方、前記閉塞板６４の裏面には、前記係合筒６８，…に嵌入する嵌合突起７０，…を突設するとともに、該嵌合突起７０の両側面に前記切欠孔６９，６９に抜止め係合する弾性爪７１，７１を形成し、更に裏面の適所に前記板バネ３８，…の側縁を当止するリブ７２を突設している。そして、前記板バネ保持部４４に板バネ３８，…を装着した後、前記閉塞板６４を板バネ保持部４４に抜止め状態で嵌着するのである。 Further, a plurality of box-shaped engagement cylinders 68 are provided inside the leaf spring holding portion 44, and cutout holes 69 are formed in opposing wall surfaces of the engagement cylinder 68. On the other hand, on the back surface of the closing plate 64, fitting projections 70,... That fit into the engagement cylinders 68, are projected, and the notch holes 69, 69 are removed on both side surfaces of the fitting projection 70. Elastic pawls 71 and 71 that engage and engage are formed, and ribs 72 that project against the side edges of the leaf springs 38 are provided at appropriate positions on the back surface. Then, after the leaf springs 38 are attached to the leaf spring holding portion 44, the closing plate 64 is fitted into the leaf spring holding portion 44 in a retaining state.

このように構成することにより、前記板バネ３８の組み込み作業が容易になるとともに、前記板バネ保持部４４は閉塞板６４で覆われるので、板バネ３８の保持が確実になり、また外観性にも優れたものになる。更に、前記連動杆１５は、中央部の横幅を拡張して拡幅部６３を形成したので、強度が向上し、板バネ３８に大きな力が加わっても破損することがないのである。 With this configuration, the plate spring 38 can be easily assembled, and the plate spring holding portion 44 is covered with the closing plate 64, so that the plate spring 38 can be reliably held and the appearance can be improved. Will also be excellent. Furthermore, the interlocking rod 15 is formed with the widened portion 63 by expanding the lateral width of the central portion, so that the strength is improved and it is not damaged even if a large force is applied to the leaf spring 38.

以上の実施形態では、天板２が折畳み姿勢になる直前に弾性緩衝機構２５によって姓動力が作用するように構成したが、天板２の回動部５の位置によっては、天板２等の回動部分の重心が前がかりになり、折畳み姿勢になる動作時よりも使用姿勢になる動作時に加速し、衝撃が大きくなることがあり、その場合には弾性緩衝機構２５が使用姿勢になる直前に作用するようにする。 In the embodiment described above, the last power is applied by the elastic buffer mechanism 25 immediately before the top plate 2 is in the folded posture. However, depending on the position of the rotating portion 5 of the top plate 2, The center of gravity of the rotating part is a forehead, accelerating during operation to use posture rather than operating to folding posture, and shock may be increased. In this case, immediately before the elastic buffer mechanism 25 is in use posture To act on.

本発明に係る折畳み式テーブルの使用姿勢の縦断面図である。It is a longitudinal cross-sectional view of the use attitude | position of the foldable table which concerns on this invention. 同じく使用姿勢の要部拡大縦断面図である。It is the principal part enlarged vertical sectional view of a use attitude | position similarly. 折畳み式テーブルの折畳み姿勢の縦断面図である。It is a longitudinal cross-sectional view of the folding posture of a foldable table. 同じく折畳み姿勢の要部拡大縦断面図である。It is a principal part expansion longitudinal cross-sectional view of a folding posture similarly. リンク機構を示す分解斜視図である。It is a disassembled perspective view which shows a link mechanism. 第１実施形態の弾性緩衝機構を示す要部の分解斜視図である。It is a disassembled perspective view of the principal part which shows the elastic buffer mechanism of 1st Embodiment. 下ストッパーの構造を示し、（ａ）は使用姿勢の部分断面図、（ｂ）は折畳み姿勢の部分断面図である。The structure of a lower stopper is shown, (a) is a fragmentary sectional view of a use attitude | position, (b) is a fragmentary sectional view of a folding attitude | position. 上ストッパーの構造を示し、（ａ）は使用姿勢の部分断面図、（ｂ）は折畳み姿勢の部分断面図である。The structure of an upper stopper is shown, (a) is a partial sectional view of a use posture, (b) is a partial sectional view of a folding posture. 第１実施形態の弾性緩衝機構を示し、（ａ）は使用姿勢の部分省略側面図、（ｂ）は折畳み姿勢の部分省略側面図である。The elastic buffer mechanism of 1st Embodiment is shown, (a) is the partial abbreviation side view of use posture, (b) is the partial abbreviation side view of folding posture. 第２実施形態の弾性緩衝機構を用いた折畳み式テーブルの使用姿勢の側面図である。It is a side view of the use attitude | position of the foldable table using the elastic buffer mechanism of 2nd Embodiment. 同じく折畳み式テーブルの折畳み姿勢の側面図である。It is a side view of the folding posture of a foldable table. リンク機構を示す分解斜視図である。It is a disassembled perspective view which shows a link mechanism. 連動杆の板バネ保持部に板バネを組み込んだ状態を示す斜視図である。It is a perspective view which shows the state which integrated the leaf | plate spring in the leaf | plate spring holding | maintenance part of an interlocking rod. 第２実施形態の弾性緩衝機構を示し、（ａ）は使用姿勢の部分省略側面図、（ｂ）は折畳み姿勢の部分省略側面図である。The elastic buffer mechanism of 2nd Embodiment is shown, (a) is the partial omission side view of a use attitude | position, (b) is the partial omission side view of a folding attitude | position. カバー機能を備えた制動部材の例を示す部分分解斜視図である。It is a partial exploded perspective view which shows the example of the braking member provided with the cover function. 第３実施形態の弾性緩衝機構を示し、板バネを組み込んだ連動杆の側面図である。It is a side view of the interlocking rod which showed the elastic buffer mechanism of 3rd Embodiment, and incorporated the leaf | plate spring. 同じく連動杆の分解斜視図である。It is an exploded perspective view of an interlocking rod similarly. カバー機能を備えた制動部材の例を示す部分分解斜視図である。It is a partial exploded perspective view which shows the example of the braking member provided with the cover function.

符号の説明Explanation of symbols

１脚体、２天板、
３幕板、４リンク機構、
５回動部、６接地杆、
７脚柱、８キャスター、
９脚アーム、１０連結部、
１１支持部、１２ブラケット、
１３下リンク杆、１４上リンク杆、
１５連動杆、１６取付杆、
１７枢着部、１８枢着部、
１９枢着部、２０枢着部、
２１枢着部、２２枢着部、
２３下ストッパー、２４上ストッパー、
２５弾性緩衝機構、２６第１カム部、
２６Ａ凹部、２６Ｂ当止部、
２７第２カム部、２７Ａ軸部、
２７Ｂ当止部、２８軸ボルト、
２９突出部、３０第３カム部、
３１円柱部、３２切欠部、
３３端部、３４軸ボルト、
３５筒部、３６軸ボルト、
３７軸ボルト、３８板バネ、
３９支持片、４０制動部材、
４１突起、４２支軸、
４３軸孔部、４４板バネ保持部、
４５軸孔、４６回動軸、
４７中心孔、４８基台、
４９ダボ、５０螺孔、
５１係合孔、５２螺軸、
５３円弧面、５４膨出部、
５５突片、５６当止部、
５７受部、５８切欠部、
５９リブ、６０カバー、
６１開口部、６２係合爪、
６３拡幅部６４閉塞板、
６５当止部６６当止部、
６７当止部６８係合筒、
６９切欠孔７０嵌合突起、
７１弾性爪、７２リブ。
1 leg, 2 top plate,
3 curtain, 4 link mechanism,
5 Rotating part, 6 Grounding rod,
7 pedestals, 8 casters,
9 leg arm, 10 connecting part,
11 support part, 12 bracket,
13 Lower link 杆, 14 Upper link 杆,
15 interlocking rod, 16 mounting rod,
17 pivot points, 18 pivot points,
19 pivots, 20 pivots,
21 pivot points, 22 pivot points,
23 Lower stopper, 24 Upper stopper,
25 elastic buffer mechanism, 26 first cam portion,
26A recess, 26B stop,
27 second cam portion, 27A shaft portion,
27B stop, 28 shaft bolt,
29 projecting portion, 30 third cam portion,
31 cylindrical part, 32 notch part,
33 end, 34 shaft bolt,
35 cylinder part, 36 shaft bolt,
37 shaft bolts, 38 leaf springs,
39 support pieces, 40 braking members,
41 protrusions, 42 spindles,
43 shaft hole portion, 44 leaf spring holding portion,
45 shaft hole, 46 rotation shaft,
47 center hole, 48 base,
49 dowels, 50 screw holes,
51 engaging hole, 52 screw shaft,
53 arc surface, 54 bulge,
55 projecting piece, 56 stop part,
57 receiving part, 58 notch part,
59 ribs, 60 covers,
61 opening, 62 engaging claw,
63 Widening portion 64 Blocking plate,
65 Stopping part 66 Stopping part,
67 Stopping part 68 Engaging cylinder,
69 Notch hole 70 Mating protrusion,
71 elastic nails, 72 ribs.

Claims

左右の脚体に天板を上下回動可能に連結するとともに、天板後部下方に配した幕板を天板とリンク機構で連動させ、該天板が水平で幕板が天板後部下方に接近して垂下した使用姿勢と、天板の前部を跳ね上げて該天板が脚体に略平行で幕板が両脚体の後縁に沿った折畳み姿勢をとる折畳み式テーブルにおいて、前記リンク機構の少なくとも一つの枢着部に、前記天板が折畳み姿勢又は使用姿勢の回転終端に近づくと機能して回転に制動を与える弾性緩衝機構を内蔵し、前記弾性緩衝機構は、前記枢着部を構成する一方の部材に板バネの基端部を保持するとともに、前記枢着部を構成する他方の部材に回転終端に近づくと前記板バネの遊端部に圧接する突起を該枢着部の回転中心から偏心した位置に設けたものである請求項１記載の折畳み式テーブル。 The top plate is connected to the left and right legs so that the top plate can be turned up and down. In the foldable table, the link is used in a folding position where the use position is lowered and the front part of the top board is flipped up so that the top board is substantially parallel to the legs and the curtains are folded along the rear edges of both legs. At least one pivot part of the mechanism incorporates an elastic buffer mechanism that functions when the top plate approaches the end of rotation of the folded or used posture, and applies braking to the rotation, and the elastic buffer mechanism includes the pivot part. It holds the base end portion of the leaf spring in one of the members constituting the, 該枢attachment part a projection which presses the free end portion of the approach to the rotating end to the other member constituting the pivot portion and the plate spring folding Te of claim 1, wherein the rotation center but on the position eccentric Bull.

前記リンク機構が、前記脚体と幕板とを下リンク杆と上リンク杆にてリンク連結するとともに、該上リンク杆の中間部と天板後部とを連動杆にてリンク連結し、天板と幕板とを連動させる構造であり、前記連動杆の上端と天板後部との枢着部に前記弾性緩衝機構を内蔵してなる請求項２記載の折畳み式テーブル。 The link mechanism links the leg and the curtain plate with a lower link rod and an upper link rod, and links and links the middle portion of the upper link rod and the rear portion of the top plate with an interlock rod. The folding table according to claim 2, wherein the elastic cushioning mechanism is built in a pivotally attached portion between an upper end of the interlocking rod and a rear portion of the top plate.

前記弾性緩衝機構は、前記天板の両側下面に固定したブラケットに、円筒状の支軸と該支軸の外周面に突起を突設した制動部材を回転不能に保持するとともに、前記連動杆の上端部に前記支軸と突起を受け入れる軸孔部と、該軸孔部に連続した板バネ保持部を凹設し、該板バネ保持部に単又は複数の板バネの基端部を嵌合するとともに、前記制動部材の支軸と突起を軸孔部に挿入し、前記連動杆の上端部を貫通した回動軸を前記制動部材の支軸に貫通して前記ブラケットに螺合し、折畳み姿勢又は使用姿勢の回転終端に近づくと前記突起が板バネの遊端部に圧接するように設定してなる請求項１又は２記載の折畳み式テーブル。 The elastic shock-absorbing mechanism holds a cylindrical support shaft and a braking member having protrusions projecting on the outer peripheral surface of the support shaft in a non-rotatable manner on brackets fixed to both lower surfaces of the top plate. A shaft hole portion that receives the support shaft and the protrusion at the upper end portion, and a leaf spring holding portion that is continuous with the shaft hole portion are recessed, and a base end portion of one or a plurality of leaf springs is fitted into the leaf spring holding portion. At the same time, the support shaft and protrusion of the braking member are inserted into the shaft hole portion, and the rotation shaft that penetrates the upper end portion of the interlocking rod passes through the support shaft of the braking member and is screwed into the bracket to be folded. The folding table according to claim 1 or 2, wherein the projection is set so that the projection comes into pressure contact with the free end of the leaf spring when approaching the rotation end of the posture or the use posture.

前記制動部材は、基台の一側面に前記支軸を突設するとともに、基台の他側面に複数のダボを突設し、前記ブラケットの支持片に前記回動軸を螺合する螺孔とその周囲に係合孔を穿設し、前記ダボを係合孔に嵌合して回転不能に保持してなる請求項３記載の折畳み式テーブル。 The braking member projects the support shaft on one side surface of the base, projects a plurality of dowels on the other side surface of the base, and screws the screw shaft into the support piece of the bracket. 4. A foldable table according to claim 3, wherein an engagement hole is formed in the periphery thereof, and the dowel is fitted into the engagement hole and held non-rotatably.

前記制動部材は、基台の一側面に前記支軸を突設するとともに、該支軸の外周部に先端に該支軸を中心とした円弧面を形成した突起を突設し、前記板バネの遊端部を前記突起の円弧面に乗り上げ可能となした請求項４記載の折畳み式テーブル。
The braking member projects the support shaft on one side surface of a base, and projects a protrusion having an arc surface centered on the support shaft on the outer periphery of the support shaft. The foldable table according to claim 4, wherein the free end portion of the projection can be ridden on the arc surface of the protrusion.