JP5470134B2

JP5470134B2 - Furniture with a top plate

Info

Publication number: JP5470134B2
Application number: JP2010080730A
Authority: JP
Inventors: 秀峰関川; 健治中村; 春彦北嶋
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2010-03-31
Filing date: 2010-03-31
Publication date: 2014-04-16
Anticipated expiration: 2030-03-31
Also published as: JP2011212076A

Description

本発明は、天板を昇降させて高さ位置を変更できる天板付き家具に関する。 The present invention relates to furniture with a top plate that can change the height position by raising and lowering the top plate.

従来のオーバーベッドテーブル（天板付き家具）は、左右一対の支持体（固定脚柱）と、この支持体に沿って上下摺動可能な可動体（可動脚柱）と、により伸縮脚（脚体）を構成し、一方の伸縮脚にガススプリングを設けることで、天板の昇降の補助及び高さ位置の固定を行うようにし、かつ上側滑車（第２滑車部材）と下側滑車（第１滑車部材）とこれら滑車に掛け渡される線条体（同期用線部材）とにより同期手段を構成し、左右の可動体の昇降誤差を生じ難くして、天板の左右両側をバランスよく同期的に昇降させるようにしている（例えば、特許文献１参照）。 A conventional overbed table (furniture with a top plate) is composed of a pair of left and right supports (fixed pedestals) and a movable body (movable pedestals) that can slide up and down along the support. Body), and by providing a gas spring on one of the telescopic legs, the top plate is raised and lowered and the height position is fixed, and the upper pulley (second pulley member) and the lower pulley (first pulley) (1 pulley member) and a linear body (synchronous wire member) spanning these pulleys constitute a synchronizing means, which makes it difficult to raise and lower the left and right movable bodies and synchronizes the left and right sides of the top plate in a balanced manner. (E.g., see Patent Document 1).

特許第２７６１７０６号公報（第３頁、第１図）Japanese Patent No. 2761706 (page 3, FIG. 1)

特許文献１に記載のオーバーベッドテーブル（天板付き家具）において、天板の中央に配線ダクト等のオプション部材を取り付けたいという需要者の要望がある。しかしながら、同期手段の線条体（同期用線部材）が天板の前後中央を左右方向に掛け渡されるため、この線条体の配置状態が、オプション部材の取り付けの邪魔になってしまい、天板にオプション部材を取り付けられなくなるという問題があるばかりか、オプション部材の追加により天板の重量が増加してしまい、天板を昇降させる際に、線条体に加わる荷重が、上側滑車（第２滑車部材）と下側滑車（第１滑車部材）の２箇所に集中されるため、これら滑車と線条体が消耗し易くなってしまうという問題がある。 In the overbed table (furniture with a top plate) described in Patent Document 1, there is a demand from consumers to attach an optional member such as a wiring duct to the center of the top plate. However, since the linear member (synchronizing wire member) of the synchronizing means is laid across the front and rear center of the top plate in the left-right direction, the arrangement state of this linear member obstructs the attachment of the optional member, In addition to the problem that the optional member cannot be attached to the plate, the weight of the top plate increases due to the addition of the optional member. 2 pulley member) and the lower pulley (first pulley member) are concentrated at two locations, and there is a problem that these pulleys and the striate body are easily consumed.

本発明は、このような問題点に着目してなされたもので、天板の左右両側を同期的に昇降させる天板付き家具において、天板にオプション部材等を取り付けるスペースを確保でき、かつ滑車部材及び同期用線部材の耐久性を向上させることができる天板付き家具を提供することを目的とする。 The present invention has been made paying attention to such problems, and in furniture with a top plate that moves the left and right sides of the top plate up and down synchronously, a space for attaching an optional member to the top plate can be secured, and a pulley. It aims at providing the furniture with a top plate which can improve the durability of a member and a line member for a synchronization.

前記課題を解決するために、本発明の天板付き家具は、
天板の左右側部を支持する左右一対の脚体は、床面に設置される固定脚柱と、該固定脚柱に支持されて昇降可能となっている可動脚柱と、により上下方向に伸縮自在に構成され、該両脚体を伸縮させることにより前記天板を昇降させて高さ位置を変更でき、かつ可撓性を有する前後一対の同期用線部材の一端が一方の固定脚柱に固定されるとともに、該同期用線部材の他端が他方の固定脚柱に固定されており、該同期用線部材が、前記可動脚柱の下方位置に配置されて水平軸周りに回動する第１滑車部材と、前記可動脚柱の上方位置に配置されて水平軸周りに回動する前後一対の第２滑車部材と、に掛け渡されており、該同期用線部材により前記両脚体の伸縮動作を同期させる天板付き家具において、
前記第２滑車部材から前後方向に離間した位置に配置される前後一対の第３滑車部材が設けられ、該各第３滑車部材に、前記各同期用線部材が前後に分かれて掛け渡されることを特徴としている。
この特徴によれば、前後一対の第３滑車部材に掛け渡された各同期用線部材が、前後に離間されて配置され、天板の中央にオプション部材等を取り付けるスペースを確保することができ、かつ天板を昇降させる際に、同期用線部材に加わる荷重が、第１滑車部材、第２滑車部材、及び第３滑車部材の３箇所に分散されて加わり、各滑車部材に加わる荷重を低減させるとともに、同期用線部材も消耗し難くなり、各滑車部材及び同期用線部材の耐久性を向上させることができる。 In order to solve the above-mentioned problem, the furniture with a top plate of the present invention,
A pair of left and right legs that support the left and right sides of the top plate are vertically supported by a fixed pedestal installed on the floor and a movable pedestal supported by the fixed pedestal and movable up and down. One end of a pair of front and rear synchronization line members having flexibility is configured as one fixed leg column. In addition to being fixed, the other end of the synchronizing line member is fixed to the other fixed pedestal, and the synchronizing line member is disposed below the movable pedestal and rotates around a horizontal axis. The first pulley member and a pair of front and rear second pulley members that are arranged above the movable leg column and rotate around a horizontal axis are spanned, and the synchronization line members are used to In furniture with a top plate that synchronizes expansion and contraction movement,
A pair of front and rear third pulley members disposed at positions separated from the second pulley member in the front-rear direction are provided, and the respective synchronization line members are spanned across the third pulley member in the front-rear direction. It is characterized by.
According to this feature, each synchronization wire member spanned between the pair of front and rear third pulley members is arranged to be separated from the front and rear, and a space for attaching an optional member or the like to the center of the top plate can be secured. In addition, when the top plate is raised and lowered, the load applied to the synchronizing wire member is distributed and applied to three locations of the first pulley member, the second pulley member, and the third pulley member, and the load applied to each pulley member In addition to the reduction, the synchronizing line member is also less likely to be consumed, and the durability of each pulley member and the synchronizing line member can be improved.

本発明の天板付き家具は、
前記可動脚柱の上部位置には、前後方向に延びて前記天板を支持する天板支持部が設けられ、該天板支持部の前後方向の略中央部に、前記一対の第２滑車部材が収納される中央収納部が上方に開口されて設けられ、該中央収納部から前後方向にそれぞれ離間した位置に、前記第３滑車部材が収納される離間収納部が上方に開口されて設けられており、前記第３滑車部材は、前記離間収納部に設けられる略垂直方向を向く軸周りに回動されることを特徴としている。
この特徴によれば、第２及び第３滑車部材を天板支持部の各収納部に上方から収納して取り付け易くなるばかりか、第２及び第３滑車部材を天板支持部内に収納した状態で、天板の下面を天板支持部の上面に取り付けることができ、天板付き家具の組立作業を効率よく行うことができ、かつ天板を昇降させる際に、第２滑車部材の動作と第３滑車部材の動作とが互いに影響を与えずに済むばかりか、略垂直方向を向く軸周りに第３滑車部材が回動されることにより、第２滑車部材から第３滑車部材に向かって前後方向の延びる同期用線部材の動作を、他方の脚体に向かって左右方向に速やかに切り換えることができ、各滑車部材の動作がスムーズに行われるようになる。 The furniture with a top plate of the present invention,
A top plate support portion that extends in the front-rear direction and supports the top plate is provided at an upper position of the movable pedestal, and the pair of second pulley members is provided at a substantially central portion in the front-rear direction of the top plate support portion. A central storage portion for storing the third pulley member is provided to open upward, and a separate storage portion for storing the third pulley member is provided to open upward at positions spaced apart from the central storage portion in the front-rear direction. The third pulley member is rotated around an axis that is provided in the spaced-apart storage portion and faces a substantially vertical direction.
According to this feature, the second and third pulley members are housed in the respective storage portions of the top plate support portion from above to facilitate attachment, and the second and third pulley members are stored in the top plate support portion. Thus, the lower surface of the top plate can be attached to the upper surface of the top plate support part, the assembly work of the furniture with the top plate can be performed efficiently, and when the top plate is raised and lowered, The operation of the third pulley member does not have to affect each other, and the third pulley member is rotated about the axis that is substantially perpendicular to the second pulley member toward the third pulley member. The operation of the synchronizing line member extending in the front-rear direction can be quickly switched in the left-right direction toward the other leg, so that the operation of each pulley member is smoothly performed.

本発明の天板付き家具は、
前記左右一対の可動脚柱は、前後一対の連結杆により連結されており、該連結杆同士の対向面に近接して前記同期用線部材が配置されることを特徴としている。
この特徴によれば、天板付き家具を前方側または後方側から見たときに、同期用線部材が連結杆に隠蔽されるとともに、天板の下方においてオプション部材まで延設される配線等の部材が同期用線部材と干渉しなくなり、かつ天板の下方において配線作業等を行うときも、同期用線部材が作業者に触れないように連結杆によって保護される。 The furniture with a top plate of the present invention,
The pair of left and right movable pedestals are connected by a pair of front and rear connecting rods, and the synchronizing wire member is disposed in proximity to the facing surfaces of the connecting rods.
According to this feature, when the furniture with a top plate is viewed from the front side or the rear side, the line member for synchronization is concealed by the connecting rod, and the wiring extending to the optional member is provided below the top plate. Even when the member does not interfere with the synchronizing wire member and performs wiring work or the like below the top plate, the synchronizing wire member is protected by the connecting rod so as not to touch the operator.

本発明の天板付き家具は、
前記脚体は、上下方向に伸縮されることで前記可動脚柱の昇降の補助及び高さ位置の固定を行うガススプリングを有し、該ガススプリングの作動部を作動させる作動部材及び該作動部材を操作する操作用線部材が、前記前後一対の第２滑車部材の間に配置されることを特徴としている。
この特徴によれば、作動部材及操作用線部材の動作が、前後の第２滑車部材及びこの第２滑車部材から前後に離間された同期用線部材の動作に影響を与えずに済むようになるばかりか、各部材を可動脚柱の上方位置にコンパクトに配置することができる。 The furniture with a top plate of the present invention,
The leg has a gas spring that assists in raising and lowering the movable leg column and fixing the height position by being expanded and contracted in the vertical direction, and an operating member that operates an operating part of the gas spring, and the operating member An operation line member for operating is arranged between the pair of front and rear second pulley members.
According to this feature, the operation of the actuating member and the operation line member does not affect the operation of the front and rear second pulley members and the operation of the synchronizing line member spaced from the second pulley member back and forth. In addition, each member can be compactly arranged above the movable pedestal.

実施例におけるテーブルを示す斜視図である。It is a perspective view which shows the table in an Example. テーブルを示す正面図である。It is a front view which shows a table. 天板を省略した状態のテーブルを示す平面図である。It is a top view which shows the table of the state which abbreviate | omitted the top plate. アームを示す平面図である。It is a top view which shows an arm. アームを示す斜視図である。It is a perspective view which shows an arm. プーリ及び押圧部材を枢支部材に取り付けた状態を示す斜視図である。It is a perspective view which shows the state which attached the pulley and the press member to the pivot member. 図３における右側のアーム及び脚体の内部構造を示すＡ−Ａ断面図である。It is AA sectional drawing which shows the internal structure of the arm and leg body of the right side in FIG. 図７における脚体及びアームの内部構造を示すＢ−Ｂ断面図である。It is BB sectional drawing which shows the internal structure of the leg body and arm in FIG. アームの内部構造を示す図７の部分拡大図である。It is the elements on larger scale of FIG. 7 which shows the internal structure of an arm. （ａ）は図９における部分拡大図であり、（ｂ）は押圧部材がガススプリングを押圧する状態を示す縦断面図である。(A) is the elements on larger scale in FIG. 9, (b) is a longitudinal cross-sectional view which shows the state which a press member presses a gas spring. （ａ）は操作部を示す平面図であり、（ｂ）は操作レバーが前方側に引かれた状態を示す平面図である。(A) is a top view which shows an operation part, (b) is a top view which shows the state by which the operation lever was pulled ahead. 脚体の昇降動作を示す概念図である。It is a conceptual diagram which shows the raising / lowering operation | movement of a leg. アームと枢支部材の変形例を示す縦断正面図である。It is a vertical front view which shows the modification of an arm and a pivot member.

本発明に係る天板付き家具を実施するための形態を実施例に基づいて以下に説明する。 EMBODIMENT OF THE INVENTION The form for implementing the furniture with a top plate which concerns on this invention is demonstrated below based on an Example.

実施例に係る天板付き家具につき、図１から図１３を参照して説明する。以下、図３の紙面下側をテーブルの正面側（前方側）とし、図７及び図９の紙面左側をテーブルの正面側（前方側）とし、図１１の紙面右側をテーブルの正面側（前方側）として説明する。 The furniture with a top plate according to the embodiment will be described with reference to FIGS. 3 is the front side (front side) of the table, the left side of FIGS. 7 and 9 is the front side of the table (front side), and the right side of FIG. 11 is the front side of the table (front side). Side).

図１の符号１は、本発明の適用された天板付き家具としてのテーブルである。このテーブル１は、左右に長い１枚の天板２と、この天板２の左右側部を支持する左右一対の脚体３と、を有し、天板２を昇降させて、その高さ位置が変更できるようになっている。 The code | symbol 1 of FIG. 1 is the table as furniture with a top plate to which this invention was applied. The table 1 has a single top plate 2 that is long on the left and right sides, and a pair of left and right legs 3 that support the left and right sides of the top plate 2. The position can be changed.

図２に示すように、脚体３には、前後に延設されて床面に設置されるベース脚４と、ベース脚４の中央から立設された支持杆５と、支持杆５に内嵌された昇降杆６と、が設けられている。支持杆５の上部は開口しており、昇降杆６は、支持杆５に対して昇降自在に内嵌している。 As shown in FIG. 2, the leg 3 includes a base leg 4 that extends in the front-rear direction and is installed on the floor, a support rod 5 that is erected from the center of the base leg 4, and an internal support rod 5. A fitted elevating rod 6 is provided. The upper part of the support rod 5 is opened, and the elevating rod 6 is fitted in the support rod 5 so as to be movable up and down.

また、脚体３の上部には、前後に延設される本発明における天板支持部としてのアーム７が設けられており、このアーム７は昇降杆６の上部に取り付けられている。尚、ベース脚４と支持杆５とにより本発明の固定脚柱が構成されており、昇降杆６とアーム７とにより本発明の可動脚柱が構成されている。 Further, an arm 7 as a top plate support portion in the present invention extending in the front-rear direction is provided on the upper portion of the leg body 3, and this arm 7 is attached to the upper portion of the lifting / lowering rod 6. The base leg 4 and the support rod 5 constitute the fixed pedestal of the present invention, and the lifting rod 6 and the arm 7 constitute the movable pedestal of the present invention.

図３及び図７に示すように、左右の各アーム７には、後述する同期用ワイヤ部材１４（同期用線部材）が係合される２つの上部滑車部材４２（第２滑車部材）が前後に配置されている。尚、これらの上部滑車部材４２，４２は、アーム７とは別体に設けられた枢支部材２０に枢支されている。 As shown in FIGS. 3 and 7, the left and right arms 7 have two upper pulley members 42 (second pulley members) to which a later-described synchronization wire member 14 (synchronization wire member) is engaged. Is arranged. The upper pulley members 42 and 42 are pivotally supported by a pivot member 20 provided separately from the arm 7.

また、図４に示すように、アーム７は天板２の中央に向かって突出された前後一対の連結部７ａを有し、この連結部７ａに連結杆８が接続されている。これら前後に並設された２本の連結杆８により左右のアーム７は互いに連結されている。尚、この連結杆８は角柱をなし、左右の脚体３の間で略直線状に延設されている。更に、アーム７及び連結杆８の上部には、天板２が取り付けられており、後述するように、昇降杆６の昇降とともに天板２が昇降されるようになっている。 As shown in FIG. 4, the arm 7 has a pair of front and rear connecting portions 7a protruding toward the center of the top plate 2, and a connecting rod 8 is connected to the connecting portion 7a. The left and right arms 7 are connected to each other by two connecting rods 8 arranged side by side in the front-rear direction. The connecting rod 8 is a prism and extends substantially linearly between the left and right legs 3. Furthermore, the top plate 2 is attached to the upper part of the arm 7 and the connecting rod 8, and as will be described later, the top plate 2 is raised and lowered together with the raising and lowering of the lifting rod 6.

図２及び図３に示すように、天板２の下面における中央部には、操作者が天板２を昇降させる際に、操作される操作部９が取り付けられている。この操作部９は、天板２の前端部近傍に配置されている。後述するように、操作者は、操作部９に設けられた操作レバー１０を天板２から離れる方向に水平に移動させた状態を維持しつつ、天板２を持ち上げたり下げたりすることで、天板２の高さ位置を自在に変更できるようになっている。 As shown in FIGS. 2 and 3, an operation unit 9 that is operated when the operator raises and lowers the top plate 2 is attached to the central portion of the lower surface of the top plate 2. The operation unit 9 is disposed in the vicinity of the front end portion of the top plate 2. As will be described later, the operator lifts or lowers the top plate 2 while maintaining the state in which the operation lever 10 provided in the operation unit 9 is moved horizontally in the direction away from the top plate 2. The height position of the top plate 2 can be freely changed.

また、天板２の中央部には、オプション部材としての配線ダクト７０が設けられている。この配線ダクト７０には、電源タップ（図示略）やＬＡＮ用のＨＵＢ（図示略）を設置させることができ、天板２上でパソコン（図示略）を使用する際などに、この配線ダクト７０を開放して電源タップ（図示略）やＬＡＮ用のＨＵＢ（図示略）に接続して使用することができる。 Further, a wiring duct 70 as an optional member is provided at the center of the top plate 2. The wiring duct 70 can be provided with a power tap (not shown) or a LAN HUB (not shown). When the personal computer (not shown) is used on the top board 2, the wiring duct 70 is used. Can be used by connecting to a power tap (not shown) or a LAN HUB (not shown).

次に、左右のアーム７について、図４及び図５を参照して説明する。左右のアーム７は略同一構成となっているため、図３中の右側のアーム７を例として図４及び図５を参照して説明する。 Next, the left and right arms 7 will be described with reference to FIGS. Since the left and right arms 7 have substantially the same configuration, the right arm 7 in FIG. 3 will be described as an example with reference to FIGS. 4 and 5.

図４に示すように、アーム７は、左右の側壁部７１が湾曲して中央部の左右幅が大きく形成されている。アーム７の中央部には、上方向に開口する中央収納部７２（嵌合凹部）が形成されており、この中央収納部７２に枢支部材２０が嵌合するようになっている（図７参照）。また、中央収納部７２には、左右の側壁部７１同士を連結する複数のリブ７３が設けられており、このリブ７３により中央収納部７２の変形や歪み等を防止している。 As shown in FIG. 4, the arm 7 is formed such that the left and right side wall portions 71 are curved and the central portion has a large lateral width. A central housing portion 72 (fitting recess) that opens upward is formed at the center of the arm 7, and the pivot member 20 is fitted into the central housing portion 72 (FIG. 7). reference). Further, the central storage portion 72 is provided with a plurality of ribs 73 that connect the left and right side wall portions 71, and the ribs 73 prevent deformation, distortion, and the like of the central storage portion 72.

更に、リブ７３には、脚体３内部に設けられたガススプリング１２のピストンロッド１６が下方から挿通されるロッド挿通孔７３ａと、後述する同期用ワイヤ部材１４が挿通されるワイヤ挿通孔７３ｂと、枢支部材２０を取り付けるための取付孔７３ｃと、が形成されている。 Further, the rib 73 has a rod insertion hole 73a through which the piston rod 16 of the gas spring 12 provided in the leg 3 is inserted from below, and a wire insertion hole 73b through which a synchronization wire member 14 described later is inserted. A mounting hole 73c for mounting the pivot member 20 is formed.

また、中央収納部７２の前後には、後述する同期用ワイヤ部材１４が係合される案内滑車部材７４（第３滑車部材）が収納される離間収納部７５が形成されており、この離間収納部７５は、上方に開口しており、案内滑車部材７４の枢支軸７４ａが垂直方向を向くように配置される（図３参照）。 Further, before and after the central storage portion 72, a separation storage portion 75 is formed in which a guide pulley member 74 (third pulley member) to be engaged with a later-described synchronization wire member 14 is formed. The part 75 is opened upward, and is arranged so that the pivot shaft 74a of the guide pulley member 74 faces the vertical direction (see FIG. 3).

アーム７に離間収納部７５を形成し、離間収納部７５に案内滑車部材７４を設けることで、アーム７と案内滑車部材７４とを、案内滑車部材７４がセットされたユニットとして天板２と連結させることができるとともに、案内滑車部材７４がアーム７の上面から上方に突出しないようにすることができる。 The arm 7 and the guide pulley member 74 are provided in the space storage portion 75 by forming the space storage portion 75 and connecting the arm 7 and the guide pulley member 74 to the top plate 2 as a unit in which the guide pulley member 74 is set. In addition, the guide pulley member 74 can be prevented from protruding upward from the upper surface of the arm 7.

尚、アーム７には、操作用ワイヤ部材２２が配置される切欠部７２ａと、同期用ワイヤ部材１４が配置される切欠部７５ａと、が形成されており、この切欠部７２ａ，７５ａからアーム７の外部に導出された各ワイヤ部材１４，２２が天板２の下面側に配設される。 The arm 7 is formed with a notch 72a in which the operation wire member 22 is disposed and a notch 75a in which the synchronization wire member 14 is disposed, and the arm 7 is formed from the notches 72a and 75a. The wire members 14 and 22 led out to the outside of the top plate 2 are disposed on the lower surface side of the top plate 2.

次に、左右の脚体３の内部構造について説明する。各脚体３の構成は略同一構成となっているため、図３中の右側の脚体３を例として説明する。図７に示すように、昇降杆６の内部には、ベース脚４に固定された連結部材１１が上方向に延設されている。更に、昇降杆６の内部には、上下方向に伸縮可能なガススプリング１２が設けられている。尚、ガススプリング１２は、その下端部がベース脚４に固着されるとともに、その上端部がアーム７の下面に固着されている。 Next, the internal structure of the left and right legs 3 will be described. Since each leg 3 has substantially the same configuration, the right leg 3 in FIG. 3 will be described as an example. As shown in FIG. 7, a connecting member 11 fixed to the base leg 4 is extended upward in the lifting rod 6. Further, a gas spring 12 that can be expanded and contracted in the vertical direction is provided inside the lifting rod 6. The gas spring 12 has a lower end fixed to the base leg 4 and an upper end fixed to the lower surface of the arm 7.

また、連結部材１１とガススプリング１２の間には、下部滑車部材１３（第１滑車部材）及び同期用ワイヤ部材１４が設けられている。下部滑車部材１３は、水平方向を向く枢軸６１を中心に回動されるとともに、下部滑車部材１３は、昇降杆６とともに昇降可能になっている。 Further, a lower pulley member 13 (first pulley member) and a synchronization wire member 14 are provided between the connecting member 11 and the gas spring 12. The lower pulley member 13 is rotated about a pivot 61 that faces in the horizontal direction, and the lower pulley member 13 can be moved up and down together with the lifting rod 6.

次に、ガススプリング１２について、図７及び図９を参照して説明する。図７に示すように、ガススプリング１２は、ガスを封入させたシリンダ１５と、シリンダ１５内部に配置されてシリンダ１５から出し入れされるピストンロッド１６と、を有している。そして、ピストンロッド１６が出し入れされてガススプリング１２が上下方向に伸縮されることで、ガススプリング１２の上下長が任意の長さで変更可能となっている。 Next, the gas spring 12 will be described with reference to FIGS. As shown in FIG. 7, the gas spring 12 includes a cylinder 15 in which a gas is sealed, and a piston rod 16 that is disposed inside the cylinder 15 and is taken in and out of the cylinder 15. And the piston rod 16 is taken in and out, and the gas spring 12 is expanded and contracted in the vertical direction, so that the vertical length of the gas spring 12 can be changed to an arbitrary length.

図９に示すように、ピストンロッド１６は、ガススプリング１２の上端部に設けられたプッシュロッド１７（作動部）が押圧されることにより動作し、ガススプリング１２の上下長を任意に変更できるようになっている。また、ピストンロッド１６におけるアーム７よりも下方位置に取り付けられたナット１８がアーム７の下面に固着されている。 As shown in FIG. 9, the piston rod 16 operates when the push rod 17 (actuating portion) provided at the upper end of the gas spring 12 is pressed, so that the vertical length of the gas spring 12 can be arbitrarily changed. It has become. Further, a nut 18 attached to a position below the arm 7 in the piston rod 16 is fixed to the lower surface of the arm 7.

尚、ガススプリング１２の上下長の変化とともに、昇降杆６が上下に昇降され、ガススプリング１２の上下長の固定とともに、昇降杆６の高さ位置が固定されるようになっている。尚、プッシュロッド１７が押圧されてピストンロッド１６が伸縮可能な状態を伸縮状態とし、プッシュロッド１７の押圧が解除されてピストンロッド１６がロックされた状態を固定状態とする。 In addition, as the vertical length of the gas spring 12 changes, the elevating rod 6 is moved up and down, and the height position of the elevating rod 6 is fixed as the vertical length of the gas spring 12 is fixed. The state in which the push rod 17 is pressed and the piston rod 16 can be expanded and contracted is defined as the expanded state, and the state in which the push rod 17 is released and the piston rod 16 is locked is defined as the fixed state.

次に、アーム７の中央収納部７２に配置される枢支部材２０について、図６を参照して説明する。図６に示すように、枢支部材２０は上方が開口しており、テーブル１の内方に配置される側板部７６と、テーブル１の外方に配置される側板部７７と、が互いに対向して前後方向に延設されている。側板部７６と側板部７７の下面には底板部７８が設けられ、枢支部材２０は、断面視で略コ字状をなしている（図１０（ａ）参照）。 Next, the pivot member 20 disposed in the central storage portion 72 of the arm 7 will be described with reference to FIG. As shown in FIG. 6, the pivot member 20 is open at the top, and the side plate portion 76 disposed inside the table 1 and the side plate portion 77 disposed outside the table 1 face each other. And it is extended in the front-back direction. A bottom plate portion 78 is provided on the lower surfaces of the side plate portion 76 and the side plate portion 77, and the pivotal support member 20 is substantially U-shaped in a cross-sectional view (see FIG. 10A).

図６に示すように、側板部７６と側板部７７の間には、２つの上部滑車部材４２が設けられ、これらの上部滑車部材４２は、それぞれ水平方向を向く枢軸６３を中心に回動し、前方側の上部滑車部材４２と後方側の上部滑車部材４２は、それぞれ独立して回動されるようになっている。 As shown in FIG. 6, two upper pulley members 42 are provided between the side plate portion 76 and the side plate portion 77, and these upper pulley members 42 rotate around a pivot 63 that faces the horizontal direction. The front upper pulley member 42 and the rear upper pulley member 42 are independently rotated.

また、枢支部材２０の前部２０ａと後部２０ｂには、それぞれアーム７に取り付けるための取付孔７９が形成されている。そして、枢支部材２０の後部２０ｂの下面は、枢支部材２０の前部２０ａの下面よりも低く形成されており、所定寸法Ｄの高低差が形成されている（図９参照）。 Further, attachment holes 79 for attachment to the arm 7 are formed in the front portion 20a and the rear portion 20b of the pivot member 20, respectively. The lower surface of the rear portion 20b of the pivot member 20 is formed lower than the lower surface of the front portion 20a of the pivot member 20, and a height difference of a predetermined dimension D is formed (see FIG. 9).

更に、枢支部材２０の取付孔７９と、アーム７の中央収納部７２に設けられたリブ７３の取付孔７３ｃと、を合わせて螺着することにより、枢支部材２０とアーム７とが連結される（図９参照）。そして、枢支部材２０の下面をリブ７３の上端に接触させることにより、リブ７３の変形や歪み等を防止することができる。 Furthermore, the support member 20 and the arm 7 are connected by screwing together the attachment hole 79 of the pivot member 20 and the attachment hole 73c of the rib 73 provided in the central storage portion 72 of the arm 7. (See FIG. 9). And the deformation | transformation, distortion, etc. of the rib 73 can be prevented by making the lower surface of the pivot member 20 contact the upper end of the rib 73.

図６に示すように、枢支部材２０における側板部７６には、その上部が切り欠かれた切欠部７６ａが形成されている。更に、側板部７７の中央部は開口されている。尚、前後の上部滑車部材４２は、前後に離間して設けられており、前後の上部滑車部材４２の間には、本発明における作動部材としての押圧部材１９が配置できるようになっている。 As shown in FIG. 6, the side plate portion 76 of the pivotal support member 20 is formed with a notch portion 76 a in which the upper portion is notched. Further, the central portion of the side plate portion 77 is opened. The front and rear upper pulley members 42 are provided to be separated from each other in the front and rear, and the pressing member 19 as an operating member in the present invention can be disposed between the front and rear upper pulley members 42.

このように、上部滑車部材４２及び押圧部材１９が取り付けられる枢支部材２０を設けたことにより、アーム７に細かな設計を施す必要がなくなるので、設計コストを低減できる。また、枢支部材２０が補強部材となって、中央収納部７２の強度を高めることができる。 As described above, by providing the pivot member 20 to which the upper pulley member 42 and the pressing member 19 are attached, it is not necessary to make a fine design on the arm 7, so that the design cost can be reduced. Further, the pivotal support member 20 becomes a reinforcing member, and the strength of the central storage portion 72 can be increased.

次に、ガススプリング１２のプッシュロッド１７を押圧するための押圧部材１９について図９及び図１０を参照して説明する。アーム７の内部には、ガススプリング１２のプッシュロッド１７を押圧するための押圧部材１９が設けられている。この押圧部材１９は、側面視で略Ｌ字状をなし、押圧部材１９の上端部には、操作用ワイヤ部材２２が係合されるワイヤ係合部２３が形成されており、枢支部材２０の側板部７６と側板部７７との間に配置されている。 Next, the pressing member 19 for pressing the push rod 17 of the gas spring 12 will be described with reference to FIGS. A pressing member 19 for pressing the push rod 17 of the gas spring 12 is provided inside the arm 7. The pressing member 19 is substantially L-shaped in a side view, and a wire engaging portion 23 with which an operation wire member 22 is engaged is formed at the upper end portion of the pressing member 19. The side plate portion 76 and the side plate portion 77 are disposed.

また、押圧部材１９の下部で水平方向を向く枢支軸２１が設けられ、押圧部材１９は、この枢支軸２１を軸として揺動されるようになっている。更に、押圧部材１９の下端部には、ガススプリング１２のプッシュロッド１７を押圧する押圧部２４が形成されている。 Further, a pivot shaft 21 that faces in the horizontal direction is provided at the lower portion of the pressing member 19, and the pressing member 19 is swung around the pivot shaft 21. Further, a pressing portion 24 that presses the push rod 17 of the gas spring 12 is formed at the lower end portion of the pressing member 19.

尚、押圧部材１９の下端部は、側板部７７の中央部から外側に延出し、枢支軸２１は側板部７７の外側で枢支されている。枢支部材２０における後部２０ｂが低く形成されているため、枢支軸２１を後方側の上部滑車部材４２の下方に設けることができるようになっており、押圧部材１９の後端部に形成された押圧部２４がガススプリング１２の上方に位置し、押圧部材１９の揺動によってプッシュロッド１７を押圧できるようになっている。 The lower end portion of the pressing member 19 extends outward from the central portion of the side plate portion 77, and the pivot shaft 21 is pivotally supported outside the side plate portion 77. Since the rear portion 20 b of the pivot member 20 is formed low, the pivot shaft 21 can be provided below the upper pulley member 42 on the rear side, and is formed at the rear end portion of the pressing member 19. The pressing portion 24 is positioned above the gas spring 12 so that the push rod 17 can be pressed by swinging the pressing member 19.

尚、前述したとおり、ガススプリング１２のプッシュロッド１７は、アーム７の中央収納部７２に形成されたロッド挿通孔７３ａの下方から挿通され、中央収納部７２内に延出されている（図９参照）。そして、枢支軸２１の後端側に形成された押圧部２４は、プッシュロッド１７の上方に位置している。 As described above, the push rod 17 of the gas spring 12 is inserted from below the rod insertion hole 73a formed in the central storage portion 72 of the arm 7 and extends into the central storage portion 72 (FIG. 9). reference). The pressing portion 24 formed on the rear end side of the pivot shaft 21 is located above the push rod 17.

このように、上部滑車部材４２は、枢支部材２０における側板部７６と側板部７７の間、即ち枢支部材２０における底板部７８の上方に設けられるとともに、押圧部材１９における押圧部２４は、底板部７８の下方に配置されている。そのため、上部滑車部材４２と押圧部材１９における押圧部２４とが枢支部材２０の底板部７８を挟んで離間され、互いに干渉し合わないようになる。 Thus, the upper pulley member 42 is provided between the side plate portion 76 and the side plate portion 77 in the pivot member 20, that is, above the bottom plate portion 78 in the pivot member 20, and the pressing portion 24 in the pressing member 19 is It is disposed below the bottom plate part 78. Therefore, the upper pulley member 42 and the pressing portion 24 of the pressing member 19 are separated from each other with the bottom plate portion 78 of the pivotal support member 20 interposed therebetween, so that they do not interfere with each other.

図１０（ａ）に示すように、操作用ワイヤ部材２２は、操作用ワイヤ２５と樹脂製のチューブ部材２６とを有し、操作用ワイヤ２５は、チューブ部材２６に挿通され、チューブ部材２６内で延設方向に摺動可能になっている。そして、操作用ワイヤ部材２２は、チューブ部材２６の端部に形成された固定部２７によってアーム７に固定されている。尚、押圧部材１９は、左右のアーム７内にそれぞれ設けられており、操作用ワイヤ部材２２は、各押圧部材１９を互いに連結している（図３参照）。 As shown in FIG. 10 (a), the operation wire member 22 includes an operation wire 25 and a resin tube member 26, and the operation wire 25 is inserted into the tube member 26 and is inside the tube member 26. It is possible to slide in the extending direction. The operation wire member 22 is fixed to the arm 7 by a fixing portion 27 formed at the end of the tube member 26. The pressing members 19 are provided in the left and right arms 7, respectively, and the operation wire member 22 connects the pressing members 19 to each other (see FIG. 3).

また、天板２の下面には、左右のアーム７の近傍、かつ前方側の連結杆８が当接する箇所に２つの凹部２ａが形成されている（図３参照）。これらの凹部２ａによって天板２と連結杆８の間には隙間ができるため、操作部９に向かって延設される操作用ワイヤ部材２２が天板２と連結杆８の間の隙間を通れるようになっている。 In addition, two concave portions 2a are formed on the lower surface of the top plate 2 in the vicinity of the left and right arms 7 and at the location where the front connecting rod 8 abuts (see FIG. 3). Since these recesses 2 a create a gap between the top plate 2 and the connecting rod 8, the operation wire member 22 extending toward the operating portion 9 can pass through the gap between the top plate 2 and the connecting rod 8. It is like that.

また、天板２の下面における操作部９の後方側には、操作用ワイヤ部材２２が案内される案内部材８０が螺着されている。案内部材８０には、上方が開口して前後方向に延びる左右２つの案内溝８０ａが形成されており、右側の案内溝８０ａには、右側のアーム７から延びる操作用ワイヤ部材２２が通されるとともに、左側の案内溝８０ａには、左側のアーム７から延びる操作用ワイヤ部材２２が通されている。 A guide member 80 for guiding the operation wire member 22 is screwed to the rear side of the operation unit 9 on the lower surface of the top plate 2. The guide member 80 is formed with two left and right guide grooves 80a that open upward and extend in the front-rear direction. The operation wire member 22 extending from the right arm 7 is passed through the right guide groove 80a. In addition, an operation wire member 22 extending from the left arm 7 is passed through the left guide groove 80a.

このように、アーム７から延びる操作用ワイヤ部材２２は、天板２の下面に形成された凹部２ａと、天板２の下面に取り付けられた案内部材８０の案内溝８０ａと、を通されることにより、操作用ワイヤ部材２２を天板２の前端部に延伸させ、天板２の中央部から離間した状態で左右方向に通すことができる。そのため、天板２の中央部に配線ダクト７０を設けることができるようになっている。 As described above, the operation wire member 22 extending from the arm 7 is passed through the recess 2 a formed on the lower surface of the top plate 2 and the guide groove 80 a of the guide member 80 attached to the lower surface of the top plate 2. Thus, the operation wire member 22 can be extended to the front end portion of the top plate 2 and passed in the left-right direction while being separated from the central portion of the top plate 2. Therefore, the wiring duct 70 can be provided in the central part of the top plate 2.

また、図１０（ａ）に示すように、操作用ワイヤ２５は、チューブ部材２６の長さよりも長く設けられており、操作用ワイヤ部材２２の端部は操作用ワイヤ２５が露呈している。操作用ワイヤ２５の先端は係合金具２８で留められており、この係合金具２８が押圧部材１９のワイヤ係合部２３に係合している。 Further, as shown in FIG. 10A, the operation wire 25 is provided longer than the length of the tube member 26, and the operation wire 25 is exposed at the end of the operation wire member 22. The distal end of the operation wire 25 is fastened with an engagement fitting 28, and the engagement fitting 28 is engaged with the wire engagement portion 23 of the pressing member 19.

そして、図１０（ｂ）に示すように、操作用ワイヤ２５が内方向に引っ張られると、押圧部材１９が揺動して押圧部２４が下降する。そして、ガススプリング１２のプッシュロッド１７が押圧され、ピストンロッド１６が伸縮可能な伸縮状態となる。 Then, as shown in FIG. 10B, when the operation wire 25 is pulled inward, the pressing member 19 swings and the pressing portion 24 descends. Then, the push rod 17 of the gas spring 12 is pressed, and the piston rod 16 is expanded and contracted.

枢支部材２０の側板部７６には、切欠部７６ａが形成されているため、押圧部材１９が揺動した場合にワイヤ係合部２３が内方に移動して切欠部７６ａに入り込み、押圧部材１９が枢支部材２０とぶつからないようになっている。 Since the notch 76a is formed in the side plate part 76 of the pivotal support member 20, when the pressing member 19 swings, the wire engaging part 23 moves inward and enters the notch 76a. 19 does not collide with the pivot member 20.

尚、ガススプリング１２が伸縮状態になると、ガススプリング１２内部のガスの付勢力によってピストンロッド１６が上昇し、アーム７及び天板２が押し上げられるようになっており、重量のある天板２であっても操作者が天板２を容易に上昇できるようになっている。 When the gas spring 12 is expanded and contracted, the piston rod 16 is raised by the urging force of the gas inside the gas spring 12, and the arm 7 and the top plate 2 are pushed up. Even if it exists, the operator can raise the top plate 2 easily.

操作用ワイヤ２５の引っ張り状態が解除されると、押圧部２４がプッシュロッド１７に押し上げられて押圧部材１９が揺動して復帰される。そして、ピストンロッド１６がロックされた固定状態となる。このようにして伸縮状態と固定状態を切り替えられるようになっている。尚、押圧部材１９が復帰し易いように、枢支部材２０の枢支軸２１の部位にバネ等の付勢手段を設けてもよい。 When the pulling state of the operation wire 25 is released, the pressing portion 24 is pushed up by the push rod 17 and the pressing member 19 swings and returns. And it will be in the fixed state where the piston rod 16 was locked. In this way, the expansion / contraction state and the fixed state can be switched. In addition, you may provide urging means, such as a spring, in the site | part of the pivot shaft 21 of the pivot member 20 so that the press member 19 may return easily.

次に、天板２の前方側に設けられた操作部９について図１１を参照して説明する。図１１（ａ）に示すように、操作部９には、天板２に固定される固定部材２９と、水平方向に移動可能な移動部材３０と、が設けられている。また、移動部材３０の前方側に操作者が移動部材３０を移動させるための操作レバー１０が設けられている。 Next, the operation part 9 provided in the front side of the top plate 2 is demonstrated with reference to FIG. As shown in FIG. 11A, the operation unit 9 is provided with a fixing member 29 fixed to the top plate 2 and a moving member 30 movable in the horizontal direction. In addition, an operation lever 10 for the operator to move the moving member 30 is provided on the front side of the moving member 30.

固定部材２９は平面視で矩形状をなし、その四隅が天板２に螺着されている。固定部材２９の後端部には、操作用ワイヤ部材２２が保持される保持部３１が左右に２つ形成されている。また、固定部材２９の上方に組み合わされる移動部材３０は、前部（紙面右側）の左右幅が後部（紙面左側）よりも小さく形成されている。 The fixing member 29 has a rectangular shape in plan view, and its four corners are screwed to the top plate 2. At the rear end portion of the fixing member 29, two holding portions 31 for holding the operation wire member 22 are formed on the left and right. Further, the moving member 30 combined above the fixed member 29 is formed such that the left and right widths of the front portion (right side of the drawing) are smaller than the rear portion (left side of the drawing).

更に、移動部材３０の前部及び後部には、前後に延びる長孔３２が２つずつ形成されている。長孔３２の上方から挿通されたボルト３３が固定部材２９に固定されており、移動部材３０が図１１（ａ）に示す通常位置にある場合には、ボルト３３は長孔３２の前端部に位置している。 Further, two long holes 32 extending in the front-rear direction are formed in the front portion and the rear portion of the moving member 30. When the bolt 33 inserted from above the long hole 32 is fixed to the fixing member 29 and the moving member 30 is in the normal position shown in FIG. 11A, the bolt 33 is at the front end of the long hole 32. positioned.

また、移動部材３０の後部には、略半円状をなすプーリ配置部３４が形成されている。このプーリ配置部３４には、操作用ワイヤ部材２２の略中央部が係合するプーリ３５が取り付けられている。このプーリ３５は、移動部材３０に取り付けられたプーリ枢支部材２０とプーリ配置部３４との間で垂直方向を向く枢軸６２を中心に回動可能になっている。 In addition, a pulley arrangement portion 34 having a substantially semicircular shape is formed at the rear portion of the moving member 30. A pulley 35 that engages with a substantially central portion of the operation wire member 22 is attached to the pulley arrangement portion 34. The pulley 35 is rotatable around a pivot shaft 62 that faces the vertical direction between the pulley pivot member 20 attached to the moving member 30 and the pulley arrangement portion 34.

固定部材２９の保持部３１には、操作用ワイヤ部材２２のチューブ部材２６の端部に設けられた固定部４０が保持されており、固定部４０から露呈された操作用ワイヤ２５がプーリ３５に係合している。プーリ３５の前方側の円周面に操作用ワイヤ部材２２の略中央部の操作用ワイヤ２５が摺動されるようになっている。 The holding portion 31 of the fixing member 29 holds the fixing portion 40 provided at the end of the tube member 26 of the operation wire member 22, and the operation wire 25 exposed from the fixing portion 40 is attached to the pulley 35. Is engaged. The operation wire 25 at the approximate center of the operation wire member 22 is slid on the circumferential surface on the front side of the pulley 35.

また、操作用ワイヤ部材２２におけるプーリ３５に係合された部位の近傍が、保持部３１により保持されることで、操作用ワイヤ２５がプーリ３５に掛け渡された状態が維持され、操作用ワイヤ２５がプーリ３５から離脱してしまうことを防止している。 Further, the vicinity of the portion engaged with the pulley 35 in the operation wire member 22 is held by the holding portion 31, so that the state where the operation wire 25 is stretched over the pulley 35 is maintained, and the operation wire 25 is prevented from being detached from the pulley 35.

図１１（ｂ）に示すように、操作レバー１０が前方向に引かれて移動部材３０が前方位置に移動されると、操作用ワイヤ２５はチューブ部材２６内で摺動されて、プーリ３５に係合された操作用ワイヤ２５が前方向に牽引されるようになっている。 As shown in FIG. 11B, when the operation lever 10 is pulled in the forward direction and the moving member 30 is moved to the front position, the operation wire 25 is slid in the tube member 26 and is moved to the pulley 35. The engaged operation wire 25 is pulled forward.

また、図３に示すように、左右のアーム７内に設けられた押圧部材１９は、操作用ワイヤ部材２２によって連結されており、操作者が操作部９における操作レバー１０を前方向に引くと、操作用ワイヤ２５の左右端部が内方向に移動される。そして、左右の脚体３内部の押圧部材１９が同時に動作し、ガススプリング１２の伸縮状態と固定状態とが同時に切り換えられるようになっている（図１０参照）。 As shown in FIG. 3, the pressing members 19 provided in the left and right arms 7 are connected by an operation wire member 22, and when the operator pulls the operation lever 10 in the operation unit 9 in the forward direction. The left and right ends of the operation wire 25 are moved inward. Then, the pressing members 19 in the left and right legs 3 are simultaneously operated so that the gas spring 12 can be switched between the stretched state and the fixed state simultaneously (see FIG. 10).

次に、左右の脚体３で同期して行われる昇降杆６の昇降動作について、図７から図９及び図１２を参照して説明する。図７及び図８に示すように、昇降杆６の内部におけるガススプリング１２と連結杆８との間に設けられた滑車部材１３は、水平方向を向く枢軸６１を中心に回動され、同期用ワイヤ部材１４によって上下に移動可能になっている。 Next, the raising / lowering operation | movement of the raising / lowering rod 6 performed in synchronization with the left and right leg 3 is demonstrated with reference to FIGS. 7-9 and FIG. As shown in FIGS. 7 and 8, the pulley member 13 provided between the gas spring 12 and the connecting rod 8 in the lifting rod 6 is rotated around a pivot 61 that faces the horizontal direction, and is used for synchronization. The wire member 14 can move up and down.

アーム７の内部に取り付けられた枢支部材２０には、前後に２つの上部滑車部材４２が枢支されているとともに、前後の上部滑車部材４２，４２の間に押圧部材１９が配置されており、押圧部材１９が揺動されても、押圧部材１９が上部滑車部材４２にぶつからないようになっている（図９参照）。 Two upper pulley members 42 are pivotally supported on the front and rear of the pivot member 20 attached to the inside of the arm 7, and the pressing member 19 is disposed between the upper and lower upper pulley members 42 and 42. Even if the pressing member 19 is swung, the pressing member 19 does not hit the upper pulley member 42 (see FIG. 9).

図７及び図８に示すように、下部側の下部滑車部材１３に架けられた同期用ワイヤ部材１４は、アーム７の中央収納部７２におけるリブ７３に形成されたワイヤ挿通孔７３ｂに挿通されて上部側の上部滑車部材４２，４２に架け渡され、天板２の下方側を通り、他方の脚体３の下方側にも同様に架け渡されている。 As shown in FIGS. 7 and 8, the synchronization wire member 14 hung on the lower pulley member 13 on the lower side is inserted into a wire insertion hole 73 b formed in a rib 73 in the central storage portion 72 of the arm 7. It is bridged over the upper pulley members 42 on the upper side, passes through the lower side of the top plate 2, and is also bridged over the lower side of the other leg 3 in the same manner.

図９に示すように、同期用ワイヤ部材１４における連結部材１１の近傍の部位に連結金具４５が設けられており、同期用ワイヤ部材１４は、この連結金具４５を介して連結部材１１の上端部に連結されている。 As shown in FIG. 9, a connection fitting 45 is provided at a portion of the synchronization wire member 14 near the connection member 11, and the synchronization wire member 14 is connected to the upper end portion of the connection member 11 via the connection fitting 45. It is connected to.

また、図７に示すように、連結部材１１には、略中間部にストッパー４６が設けられている。昇降杆６の下面には、ストッパー当接部材４７が設けられており、このストッパー当接部材４７がストッパー４６に当接される位置で、昇降杆６の上昇が停止されるようになっている。 Further, as shown in FIG. 7, the connecting member 11 is provided with a stopper 46 at a substantially intermediate portion. A stopper contact member 47 is provided on the lower surface of the lift rod 6, and the lift of the lift rod 6 is stopped at a position where the stopper contact member 47 is in contact with the stopper 46. .

更に、同期用ワイヤ部材１４は、上部前方側の上部滑車部材４２から下部側の下部滑車部材１３を介して上部後方側の上部滑車部材４２に向かってＵ字状に架け渡されている。右側のアーム７に取り付けられた枢支部材２０に枢支された上部前方側の上部滑車部材４２から延出する同期用ワイヤ部材１４は、枢支部材２０の前方側に設けられた離間収納部７５に収納された案内滑車部材７４に架け渡されている。 Further, the synchronizing wire member 14 is bridged in a U shape from the upper pulley member 42 on the upper front side through the lower pulley member 13 on the lower side toward the upper pulley member 42 on the upper rear side. The synchronizing wire member 14 extending from the upper pulley member 42 on the upper front side that is pivotally supported by the pivoting member 20 attached to the right arm 7 is a separate storage portion provided on the front side of the pivoting member 20. It is bridged over a guide pulley member 74 housed in 75.

そして、同期用ワイヤ部材１４は、左側のアーム７に向かって延び、左側のアーム７における前方側の離間収納部７５に収納された案内滑車部材７４、左側のアーム７に取り付けられた枢支部材２０に枢支された上部前方側の上部滑車部材４２、の順に架け渡されている。右側のアーム７内の上部後方側の上部滑車部材４２から延出する同期用ワイヤ部材１４は前後逆の状態で同様に架け渡され、同期用ワイヤ部材１４は一体に形成されている。 The synchronization wire member 14 extends toward the left arm 7, and the guide pulley member 74 housed in the front side separation housing portion 75 of the left arm 7, and the pivot member attached to the left arm 7. The upper pulley member 42 on the upper front side that is pivotally supported by 20 is bridged in this order. The synchronizing wire member 14 extending from the upper pulley member 42 on the upper rear side in the right arm 7 is similarly bridged in a reverse state, and the synchronizing wire member 14 is integrally formed.

このように、下部滑車部材１３と上部滑車部材４２と案内滑車部材７４によって、天板２の下面側で２本の同期用ワイヤ部材１４が天板２の中央部から前後に離間した状態で左右方向に通されるため、天板２の中央部に配線ダクト７０を設けることができるようになっている（図３参照）。 As described above, the lower pulley member 13, the upper pulley member 42, and the guide pulley member 74 cause the two synchronization wire members 14 on the lower surface side of the top plate 2 to be left and right in a state where they are separated from the center portion of the top plate 2. Since it passes through in the direction, the wiring duct 70 can be provided in the center of the top plate 2 (see FIG. 3).

天板２が昇降される際の動きについて、図１２の概念図を参照して説明する。前述したように、上部側の上部滑車部材４２はアーム７に取り付けられた枢支部材２０に枢支されており、下部側の下部滑車部材１３は昇降杆６に枢支されており、アーム７と昇降杆６は連結されているため、下部滑車部材１３と上部滑車部材４２とは、いずれも昇降杆６とともに昇降されるようになっている。 The movement when the top plate 2 is raised and lowered will be described with reference to the conceptual diagram of FIG. As described above, the upper pulley member 42 on the upper side is pivotally supported by the pivot member 20 attached to the arm 7, and the lower pulley member 13 on the lower side is pivotally supported by the lifting / lowering rod 6. Since the elevating rod 6 and the elevating rod 6 are connected, both the lower pulley member 13 and the upper pulley member 42 are moved up and down together with the elevating rod 6.

図１２に示すように、上部側の上部滑車部材４２のうち、一方の上部滑車部材４２に架け渡されている同期用ワイヤ部材１４を同期用ワイヤ部材１４ａとし、他方の上部滑車部材４２に架け渡されている同期用ワイヤ部材１４を同期用ワイヤ部材１４ｂとして説明する。 As shown in FIG. 12, among the upper pulley members 42 on the upper side, the synchronizing wire member 14 spanned on one upper pulley member 42 is used as a synchronizing wire member 14a, and is spanned on the other upper pulley member 42. The passing synchronization wire member 14 will be described as a synchronization wire member 14b.

例えば、紙面右側の昇降杆６が上昇した場合には、右側の上部滑車部材４２が上昇するが、同期用ワイヤ部材１４ａを連結金具４５を介して連結金具１１に固定されているため、右側の上部滑車部材４２が引き上げられることにより、同期用ワイヤ部材１４ａによって、左側の下部滑車部材１３が連動して右側の上部滑車部材４２の移動距離と同じ距離だけ上昇する。 For example, when the lift 6 on the right side of the paper rises, the upper pulley member 42 on the right side rises. However, since the synchronization wire member 14a is fixed to the connection bracket 11 via the connection bracket 45, When the upper pulley member 42 is pulled up, the lower pulley member 13 on the left side is interlocked with the wire member 14a for synchronization and is raised by the same distance as the moving distance of the upper pulley member 42 on the right side.

同様に、紙面左側の昇降杆６が上昇した場合には、左側の上部滑車部材４２が上昇するが、同期用ワイヤ部材１４ｂは連結金具４５を介して連結金具１１に固定されているため、左側の上部滑車部材４２が引き上げられることにより、同期用ワイヤ部材１４ｂによって、右側の下部滑車部材１３が連動して左側の上部滑車部材４２の移動距離と同じ距離だけ上昇する。 Similarly, when the lifting rod 6 on the left side of the paper rises, the upper pulley member 42 on the left side rises, but the synchronization wire member 14b is fixed to the connection fitting 11 via the connection fitting 45, so the left side When the upper pulley member 42 is pulled up, the right lower pulley member 13 is interlocked and raised by the synchronization wire member 14b by the same distance as the moving distance of the left upper pulley member 42.

このように、同期用ワイヤ部材１４ａによる作用と同期用ワイヤ部材１４ｂによる作用が同時に働いて相互に及ぼしあうため、左右の昇降杆６，６のいずれか一方のみが先行して上昇することがない。即ち、左右の昇降杆６，６が確実に同期して上昇するようになっている。 In this way, the action of the synchronizing wire member 14a and the action of the synchronizing wire member 14b work simultaneously and affect each other, so that only one of the left and right elevating rods 6 and 6 does not advance in advance. . In other words, the right and left elevating rods 6 and 6 are reliably raised in synchronism.

更に、左右の昇降杆６，６が降下する場合においても、左側の昇降杆６と右側の昇降杆６が同時に同じ移動距離だけ連動して降下するように作用する。このようにして、左右の昇降杆６，６の伸縮を同期させるため、左右の昇降杆６，６及び天板２を一体的に昇降させることができる。 Further, even when the left and right elevating rods 6 and 6 are lowered, the left elevating rod 6 and the right elevating rod 6 act so as to be simultaneously lowered by the same movement distance. In this way, the left and right lifting rods 6 and 6 and the top plate 2 can be lifted and lowered integrally in order to synchronize the expansion and contraction of the left and right lifting rods 6 and 6.

即ち、両方の脚体３の伸縮動作が同期されるため、天板２の高さ位置を変更する際に、天板２の左右で高さがずれることなく、天板２の水平状態が維持されて昇降されるようになる。 That is, since the expansion and contraction operations of both legs 3 are synchronized, when the height position of the top plate 2 is changed, the horizontal state of the top plate 2 is maintained without shifting the height between the left and right sides of the top plate 2. Will be moved up and down.

尚、図７及び図８に示すように、昇降杆６の外面には、複数のガイドローラー５２が取り付けられており、このガイドローラー５２が支持杆５に摺接されている。昇降杆６が上下昇降される際に、これらのガイドローラー５２が支持杆５に摺接して回動することで、昇降杆の上下昇降動作がスムーズに行われるようになっている。 As shown in FIGS. 7 and 8, a plurality of guide rollers 52 are attached to the outer surface of the lifting rod 6, and the guide rollers 52 are in sliding contact with the support rod 5. When the elevating rod 6 is moved up and down, these guide rollers 52 are slidably contacted with the supporting rod 5 and rotated, so that the elevating operation of the elevating rod is smoothly performed.

次に、操作者が操作部９を操作して天板２を昇降させる動作全体について説明する。操作者が操作部９の操作レバー１０を前方に引いて移動部材３０が前方位置に移動されると、プーリ３５に係合する操作用ワイヤ２５の略中央部が前方に移動され（図１１（ｂ）参照）、操作用ワイヤ部材２２の両端が均等に移動される。 Next, the whole operation | movement which the operator operates the operation part 9 and raises / lowers the top plate 2 is demonstrated. When the operator pulls the operation lever 10 of the operation unit 9 forward and the moving member 30 is moved to the front position, the substantially central portion of the operation wire 25 engaged with the pulley 35 is moved forward (FIG. 11 ( b)), both ends of the operation wire member 22 are evenly moved.

操作用ワイヤ部材２２の端部の操作用ワイヤ２５が係合する左右の押圧部材１９，１９が揺動され、押圧部２４が下降してガススプリング１２のプッシュロッド１７が同時に押圧される（図１０（ｂ）参照）。そして、左右のガススプリング１２，１２が同時に伸縮状態となり、天板２が昇降可能になる。 The left and right pressing members 19, 19 with which the operating wire 25 at the end of the operating wire member 22 engages are swung, the pressing portion 24 is lowered, and the push rod 17 of the gas spring 12 is simultaneously pressed (see FIG. 10 (b)). Then, the left and right gas springs 12 and 12 are simultaneously expanded and contracted, and the top plate 2 can be moved up and down.

このように、左右のガススプリング１２，１２が同時に伸縮状態に切り換えられるため、いずれか一方のガススプリング１２の切り換えが先に生じて、ガススプリング１２，１２の付勢力の不均衡により天板２が傾いてしまうことを防止できるようになっている。 Thus, since the left and right gas springs 12 and 12 are simultaneously switched to the expanded and contracted state, the switching of one of the gas springs 12 occurs first, and the top plate 2 is caused by imbalance of the urging forces of the gas springs 12 and 12. Can be prevented from tilting.

操作者が天板２を上昇させる際には、ガススプリング１２が伸縮状態のまま、即ち操作レバー１０を引いたまま、天板２を上方に押し上げることで天板２が上昇される。このとき、ガススプリング１２の内部のガスによってピストンロッド１６には、上方に向かう力が働くため、重量を有する天板２であっても容易に昇降できる。 When the operator raises the top plate 2, the top plate 2 is raised by pushing the top plate 2 upward while the gas spring 12 is in an expanded / contracted state, that is, with the operation lever 10 being pulled. At this time, since the upward force acts on the piston rod 16 by the gas inside the gas spring 12, even the top plate 2 having a weight can be easily moved up and down.

また、下部滑車部材１３と、上部滑車部材４２、案内滑車部材７４及び同期用ワイヤ部材１４によって、天板２の高さ位置が左右でずれないようになっている。更に、操作部９が天板２の略中央部に設けられているため、操作者が天板２に加える力が左右脚体３，３に対して均等に加わるようになっている。 Further, the lower pulley member 13, the upper pulley member 42, the guide pulley member 74, and the synchronizing wire member 14 prevent the height position of the top plate 2 from being shifted from side to side. Furthermore, since the operation part 9 is provided in the substantially center part of the top plate 2, the force which an operator applies to the top plate 2 is applied equally with respect to the left-right leg bodies 3 and 3. FIG.

天板２が任意の位置に移動され、操作者が操作レバー１０から手を離して移動部材３０が通常位置に戻されると、プーリ３５に係合する操作用ワイヤ２５の略中央部が後方に移動され、操作用ワイヤ部材２２の端部が均等に外方向に移動される。 When the top plate 2 is moved to an arbitrary position and the operator releases the operating lever 10 to return the moving member 30 to the normal position, the substantially central portion of the operation wire 25 that engages with the pulley 35 is moved backward. The end of the operation wire member 22 is evenly moved outward.

更に、操作用ワイヤ部材２２の端部の操作用ワイヤ２５が係合する左右の押圧部材１９，１９が揺動し、押圧部２４が上昇してガススプリング１２のプッシュロッド１７の押圧が同時に解除される。そして、左右のガススプリング１２，１２が同時に固定状態となり、天板２の位置が固定される。 Further, the left and right pressing members 19, 19 with which the operating wire 25 at the end of the operating wire member 22 engages swings, the pressing portion 24 rises, and the pressing of the push rod 17 of the gas spring 12 is simultaneously released. Is done. Then, the left and right gas springs 12, 12 are simultaneously fixed, and the position of the top plate 2 is fixed.

操作者が天板２を降下させる際には、ガススプリング１２が伸縮状態のまま、即ち操作レバー１０を引いたまま、天板２を下方に押し下げることで天板２が降下される。天板２が任意の位置に移動され、操作者が操作レバー１０から手を離して移動部材３０が通常位置に戻されると、プーリ３５に係合する操作用ワイヤ２５が後方に移動され、操作用ワイヤ部材２２の端部が同時に外方向に移動される。 When the operator lowers the top plate 2, the top plate 2 is lowered by pushing the top plate 2 downward while the gas spring 12 is in an expanded / contracted state, that is, with the operation lever 10 being pulled. When the top plate 2 is moved to an arbitrary position, the operator releases the operation lever 10 and the moving member 30 is returned to the normal position, the operation wire 25 engaged with the pulley 35 is moved rearward, and the operation is performed. The end portion of the wire member 22 is simultaneously moved outward.

左右の押圧部材１９，１９が同時に揺動して押圧部２４が上昇し、ガススプリング１２のプッシュロッド１７の押圧が同時に解除される。そして、左右のガススプリング１２，１２が同時に固定状態となり、天板２の位置が固定される。 The left and right pressing members 19, 19 are simultaneously swung to raise the pressing portion 24, and the pressing of the push rod 17 of the gas spring 12 is simultaneously released. Then, the left and right gas springs 12, 12 are simultaneously fixed, and the position of the top plate 2 is fixed.

次に、アーム７及び枢支部材２０の変形例として、図１３を参照して説明する。図１３は、図９においてＣ−Ｃ断面に対応する縦断正面図である。図１３に示すように、アーム７’の中央収納部７２における左右の側壁部７１には、Ｌ字状をなす突起部８１，８１が形成されている。また、上部滑車部材４２が配置される枢支部材２０’は、断面視でコ字状をなし、左右の上端は外側に折り返されて溝部８２が形成されている。 Next, a modified example of the arm 7 and the pivot member 20 will be described with reference to FIG. FIG. 13 is a longitudinal front view corresponding to the CC cross section in FIG. 9. As shown in FIG. 13, left and right side wall portions 71 of the central storage portion 72 of the arm 7 ′ are formed with L-shaped projections 81, 81. Further, the pivot member 20 ′ on which the upper pulley member 42 is disposed has a U shape in a cross-sectional view, and left and right upper ends are folded outward to form a groove portion 82.

枢支部材２０’をアーム７’に取り付ける際には、枢支部材２０’の下面がアーム７’の下面に当接して螺着されるとともに、枢支部材２０’における左右の溝部８２，８２とアーム７’の突起部８１，８１とが係合する。そのため中央収納部７２を補強することができ、左右の側壁部７１同士が互いに離間される方向、すなわち中央収納部７２が左右方向に広がる方向に中央収納部７２が変形したり歪んだりすることを防止でき、枢支部材２０’が補強部材となってアーム７全体の変形や歪み等を防止できる。 When the pivot member 20 ′ is attached to the arm 7 ′, the lower surface of the pivot member 20 ′ is screwed in contact with the lower surface of the arm 7 ′, and the left and right groove portions 82, 82 of the pivot member 20 ′. And the protrusions 81, 81 of the arm 7 'engage. Therefore, the central storage portion 72 can be reinforced, and the central storage portion 72 is deformed or distorted in a direction in which the left and right side wall portions 71 are separated from each other, that is, in a direction in which the central storage portion 72 extends in the left-right direction. It is possible to prevent the pivoting member 20 ′ from being a reinforcing member and to prevent deformation or distortion of the arm 7 as a whole.

以上、本実施例におけるテーブル１では、天板２の左右側部を支持する左右一対の脚体３は、床面に設置される支持杆５と、この支持杆５に支持されて昇降可能となっている昇降杆６と、により上下方向に伸縮自在に構成され、両脚体３を伸縮させることにより天板２を昇降させて高さ位置を変更でき、かつ可撓性を有する前後一対の同期用ワイヤ部材１４の一端が一方の支持杆５に固定されるとともに、同期用ワイヤ部材１４の他端が他方の支持杆５に固定されており、同期用ワイヤ部材１４が、昇降杆６の下方位置に配置されて水平軸周りに回動する下部滑車部材１３と、昇降杆６の上方位置に配置されて水平軸周りに回動する前後一対の上部滑車部材４２と、に掛け渡されており、同期用ワイヤ部材１４により両脚体３の伸縮動作を同期させるテーブル１において、上部滑車部材４２から前後方向に離間した位置に配置される前後一対の案内滑車部材７４が設けられ、各案内滑車部材７４に、各同期用ワイヤ部材１４が前後に分かれて掛け渡されることで、前後一対の案内滑車部材７４に掛け渡された各同期用ワイヤ部材１４が、前後に離間されて配置され、天板２の中央に配線ダクト７０を取り付けるスペースを確保することができ、かつ天板２を昇降させる際に、同期用ワイヤ部材１４に加わる荷重が、下部滑車部材１３、上部滑車部材４２、及び案内滑車部材７４の３箇所に分散されて加わり、各滑車部材１３，４２，７４に加わる荷重を低減させるとともに、同期用ワイヤ部材１４も消耗し難くなり、各滑車部材１３，４２，７４及び同期用ワイヤ部材１４の耐久性を向上させることができる。 As described above, in the table 1 according to this embodiment, the pair of left and right legs 3 that support the left and right side portions of the top plate 2 can be lifted and lowered by being supported by the support rod 5 installed on the floor surface. A pair of front and rear synchronizations that are configured to be vertically extendable by the lifting rod 6 that is configured to be vertically movable, the height position can be changed by moving the legs 3 up and down, and the height position can be changed. One end of the wire member for synchronization 14 is fixed to the one support rod 5, and the other end of the wire member for synchronization 14 is fixed to the other support rod 5. A lower pulley member 13 which is arranged at a position and rotates around a horizontal axis, and a pair of front and rear upper pulley members 42 which are arranged at a position above the elevating rod 6 and rotate around a horizontal axis are stretched over. The expansion / contraction motion of both legs 3 is synchronized by the synchronizing wire member 14. The table 1 is provided with a pair of front and rear guide pulley members 74 disposed at positions spaced in the front-rear direction from the upper pulley member 42, and the respective synchronization wire members 14 are hung separately on the front and rear of the guide pulley members 74. By passing, each synchronization wire member 14 spanned between the pair of front and rear guide pulley members 74 is disposed so as to be separated from the front and rear, and a space for attaching the wiring duct 70 to the center of the top plate 2 can be secured. In addition, when the top plate 2 is raised and lowered, the load applied to the synchronizing wire member 14 is distributed and applied to three locations of the lower pulley member 13, the upper pulley member 42, and the guide pulley member 74. , 42, 74, and the synchronization wire member 14 is not easily consumed, and the durability of the pulley members 13, 42, 74 and the synchronization wire member 14 is reduced. It is possible to improve.

また、昇降杆６の上部位置には、前後方向に延びて天板２を支持するアーム７が設けられ、このアーム７の前後方向の略中央部に、前記一対の上部滑車部材４２が収納される中央収納部７２が上方に開口されて設けられ、この中央収納部７２から前後方向にそれぞれ離間した位置に、案内滑車部材７４が収納される離間収納部７５が上方に開口されて設けられており、案内滑車部材７４は、離間収納部７５に設けられる略垂直方向を向く軸周りに回動されることで、上部滑車部材４２及び案内滑車部材７２をアーム７の各収納部７２，７５に上方から収納して取り付け易くなるばかりか、上部滑車部材４２及び案内滑車部材７２をアーム７内に収納した状態で、天板２の下面をアーム７の上面に取り付けることができ、テーブル１の組立作業を効率よく行うことができ、かつ天板２を昇降させる際に、上部滑車部材４２の動作と案内滑車部材７２の動作とが互いに影響を与えずに済むばかりか、略垂直方向を向く軸周りに案内滑車部材７４が回動されることにより、上部滑車部材４２から案内滑車部材７４に向かって前後方向の延びる同期用ワイヤ部材１４の動作を、他方の脚体３に向かって左右方向に速やかに切り換えることができ、各滑車部材４２，７４の動作がスムーズに行われるようになる。 Further, an arm 7 that extends in the front-rear direction and supports the top plate 2 is provided at an upper position of the lifting / lowering rod 6, and the pair of upper pulley members 42 are accommodated in a substantially central portion of the arm 7 in the front-rear direction. A central storage portion 72 is provided to open upward, and a separate storage portion 75 in which the guide pulley member 74 is stored is provided to be opened upward at positions spaced apart from the central storage portion 72 in the front-rear direction. The guide pulley member 74 is rotated about a substantially vertical axis provided in the separated storage portion 75, so that the upper pulley member 42 and the guide pulley member 72 are moved to the storage portions 72 and 75 of the arm 7. The table 1 can be easily mounted by being stored from above, and the upper surface of the top plate 2 can be attached to the upper surface of the arm 7 with the upper pulley member 42 and the guide pulley member 72 stored in the arm 7. work When the top plate 2 can be moved up and down, the operation of the upper pulley member 42 and the operation of the guide pulley member 72 do not have to affect each other, and the axis is directed substantially in the vertical direction. By rotating the guide pulley member 74, the operation of the synchronization wire member 14 extending in the front-rear direction from the upper pulley member 42 toward the guide pulley member 74 is quickly performed in the left-right direction toward the other leg 3. The pulley members 42 and 74 can be smoothly operated.

また、左右一対の昇降杆６は、前後一対の連結杆８により連結されており、連結杆８同士の対向面に近接して同期用ワイヤ部材１４が配置されることで、テーブル１を前方側または後方側から見たときに、同期用ワイヤ部材１４が連結杆８に隠蔽されるとともに、天板２の下方において配線ダクト７０まで延設される配線等の部材が同期用ワイヤ部材１４と干渉しなくなり、かつ天板２の下方において配線作業等を行うときも、同期用ワイヤ部材１４が作業者に触れないように連結杆８によって保護される。 The pair of left and right lifting rods 6 are connected by a pair of front and rear connecting rods 8, and the synchronization wire member 14 is disposed in the vicinity of the opposing surfaces of the connecting rods 8, so that the table 1 is moved to the front side. Alternatively, when viewed from the rear side, the synchronization wire member 14 is concealed by the connecting rod 8, and a member such as a wiring extending to the wiring duct 70 below the top plate 2 interferes with the synchronization wire member 14. Even when wiring work or the like is performed below the top plate 2, the synchronization wire member 14 is protected by the connecting rod 8 so as not to touch the operator.

また、脚体３は、上下方向に伸縮されることで昇降杆６の昇降の補助及び高さ位置の固定を行うガススプリング１２を有し、このガススプリング１２のプッシュロッド１７（を作動させる押圧部材１９及びこの押圧部材１９を操作する操作用ワイヤ部材２２が、前後一対の上部滑車部材４２の間に配置されることで、押圧部材１９及操作用ワイヤ部材２２の動作が、前後の上部滑車部材４２及びこの上部滑車部材４２から前後に離間された同期用ワイヤ部材１４の動作に影響を与えずに済むようになるばかりか、各部材をアーム７にコンパクトに配置することができる。 Further, the leg 3 has a gas spring 12 that assists in raising and lowering the elevating rod 6 and fixing its height position by being expanded and contracted in the vertical direction, and a push rod 17 of this gas spring 12 is operated. Since the member 19 and the operation wire member 22 for operating the pressing member 19 are disposed between the pair of front and rear upper pulley members 42, the operation of the pressing member 19 and the operation wire member 22 is performed on the front and rear upper pulleys. Not only can the operation of the member 42 and the synchronizing wire member 14 separated from the upper pulley member 42 in the front-rear direction be affected, but each member can be arranged on the arm 7 in a compact manner.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。 Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

例えば、前記実施例では、操作部９をテーブル１の前方側に設けているが、後方側にも同様に設けてもよい。これにより、操作者は、テーブル１の前後どちら側からでも天板２の昇降動作ができるようになる。 For example, in the above embodiment, the operation unit 9 is provided on the front side of the table 1, but may be provided on the rear side in the same manner. As a result, the operator can move the table 2 up and down from either the front or back side of the table 1.

また、前記実施例では、案内滑車部材７４が垂直方向を向く枢支軸７４ａに枢支されているが、案内滑車部材７４の枢支軸７４ａは垂直方向を向く必要はなく、例えば、案内滑車部材７４を上部滑車部材４２よりも低い位置に設け、同期用ワイヤ部材１４を上部滑車部材４２から案内滑車部材７４に向かって斜めに傾けた状態で延設し、枢支軸７４ａを天板２の下面等の水平面に対して傾斜された状態、若しくは、枢支軸７４ａを天板２の下面等の水平面に対して略平行に配置した状態にして、この枢支軸７４ａに案内滑車部材７４が枢支されるようにしてもよい。このように案内滑車部材７４を上部滑車部材４２よりも低い位置に設けると、案内滑車部材７４と同期用ワイヤ部材１４との接触面積が増えるようになる。更に、枢支軸７４ａを天板２の下面等の水平面に対して略平行に配置した状態では、平面視において、枢支軸７４ａを同期用ワイヤ部材１４が張設される方向に傾斜、即ち枢支軸７４ａが天板２の対角線を向く方向に配置した状態としてもよい。 In the above-described embodiment, the guide pulley member 74 is pivotally supported by the pivot shaft 74a that faces the vertical direction. However, the pivot shaft 74a of the guide pulley member 74 does not need to face the vertical direction. The member 74 is provided at a position lower than the upper pulley member 42, the synchronizing wire member 14 is extended obliquely from the upper pulley member 42 toward the guide pulley member 74, and the pivot shaft 74 a is attached to the top plate 2. The guide pulley member 74 is placed on the pivot shaft 74a so as to be inclined with respect to the horizontal plane such as the lower surface of the top plate 2 or in a state where the pivot shaft 74a is disposed substantially parallel to the horizontal plane such as the lower surface of the top plate 2. May be pivotally supported. When the guide pulley member 74 is provided at a position lower than the upper pulley member 42 as described above, the contact area between the guide pulley member 74 and the synchronization wire member 14 increases. Further, in a state in which the pivot shaft 74a is disposed substantially parallel to the horizontal surface such as the lower surface of the top plate 2, the pivot shaft 74a is inclined in the direction in which the synchronization wire member 14 is stretched in a plan view. It is good also as a state arrange | positioned in the direction in which the pivot shaft 74a faces the diagonal of the top plate 2. FIG.

１テーブル（天板付き家具）
２天板
３脚体
４ベース脚（固定脚柱）
５支持杆（固定脚柱）
６昇降杆（可動脚柱）
７アーム（可動脚柱）
８連結杆
１２ガススプリング
１３下部滑車部材（第１滑車部材）
１４同期用ワイヤ部材（同期用線部材）
１７プッシュロッド（作動部）
１９押圧部材（作動部材）
２０枢支部材
４２上部滑車部材（第２滑車部材）
７０配線ダクト（オプション部材）
７１側壁部
７２中央収納部（嵌合凹部）
７３ｂワイヤ挿通孔
７４案内滑車部材（第３滑車部材）
７５離間収納部
７６側板部
７７側板部
７８底板部 1 Table (furniture with a top plate)
2 Top plate 3 Leg 4 Base leg (fixed pedestal)
5 Support rod (fixed pedestal)
6 Lifting rod (movable pedestal)
7 Arm (movable pedestal)
8 Connecting rod 12 Gas spring 13 Lower pulley member (first pulley member)
14 Wire member for synchronization (wire member for synchronization)
17 Push rod (actuating part)
19 Pressing member (actuating member)
20 Pivoting member 42 Upper pulley member (second pulley member)
70 Wiring duct (optional member)
71 Side wall 72 Central storage (fitting recess)
73b Wire insertion hole 74 Guide pulley member (third pulley member)
75 Spacing storage portion 76 Side plate portion 77 Side plate portion 78 Bottom plate portion

Claims

A pair of left and right legs that support the left and right sides of the top plate are vertically supported by a fixed pedestal installed on the floor and a movable pedestal supported by the fixed pedestal and movable up and down. One end of a pair of front and rear synchronization line members having flexibility is configured as one fixed leg column. In addition to being fixed, the other end of the synchronizing line member is fixed to the other fixed pedestal, and the synchronizing line member is disposed below the movable pedestal and rotates around a horizontal axis. The first pulley member and a pair of front and rear second pulley members that are arranged above the movable leg column and rotate around a horizontal axis are spanned, and the synchronization line members are used to In furniture with a top plate that synchronizes expansion and contraction movement,
A pair of front and rear third pulley members disposed at positions separated from the second pulley member in the front-rear direction are provided, and the respective synchronization line members are spanned across the third pulley member in the front-rear direction. Furniture with a top board characterized by

A top plate support portion that extends in the front-rear direction and supports the top plate is provided at an upper position of the movable pedestal, and the pair of second pulley members is provided at a substantially central portion in the front-rear direction of the top plate support portion. A central storage portion for storing the third pulley member is provided to open upward, and a separate storage portion for storing the third pulley member is provided to open upward at positions spaced apart from the central storage portion in the front-rear direction. The furniture with a top plate according to claim 1, wherein the third pulley member is rotated about a substantially vertical axis provided in the spaced-apart storage portion.

The pair of left and right movable pedestals are connected to each other by a pair of front and rear connecting rods, and the line member for synchronization is arranged close to the facing surfaces of the connecting rods. Furniture with a top plate as described in.

The leg has a gas spring that assists in raising and lowering the movable leg column and fixing the height position by being expanded and contracted in the vertical direction, and an operating member that operates an operating part of the gas spring, and the operating member The furniture with a top plate according to any one of claims 1 to 3, wherein a line member for operation for operating is arranged between the pair of front and rear second pulley members.