JP2007244622A

JP2007244622A - Folding device of top plate or the like

Info

Publication number: JP2007244622A
Application number: JP2006071894A
Authority: JP
Inventors: Yusuke Hirose; 裕介広瀬
Original assignee: Ebisu Furniture Kk
Current assignee: Ebisu Furniture Kk
Priority date: 2006-03-16
Filing date: 2006-03-16
Publication date: 2007-09-27
Anticipated expiration: 2026-03-16
Also published as: JP4454593B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding device of a top plate or the like, for example, suited for a top plate folding table, facilitating and smoothing the close use and stacking operation of the top plate by moving one leg to inner/outer direction when using and folding the top plate, or a folded part, and providing a novel pivot structure of the top plate and a safety structure of a locking link. <P>SOLUTION: This folding device of the top plate is provided with the folded part 1 such as the top plate, a plurality of support frames 2 attached to the lower face of the folded part 1, pivots 9 of the folded part 1 disposed in the support frames 2, and front/rear legs 45 and 57 disposed in the both-side lower parts of the folded part 1. The pivot 9 is slidably mounted with a movable tube 10, the movable tube 10 is axially movably provided in association with the turning displacement of the folded part 1 and the movable tube 10 is movably mounted with either of the front/rear legs 45 or 57. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば天板の折り畳みテ−ブルに好適で、被折り畳み部である天板の使用時と折り畳み時に一方の脚を内外方向へ移動し、天板の密接使用やスタッキング操作の容易化と円滑性を図るとともに、天板の新規な枢支構造と、ロック機構の安全性を得られる、天板等の折り畳み装置に関する。 The present invention is suitable for, for example, a folding table of a top plate, and moves one leg inward and outward when using the top plate as a folded portion and when folded, facilitating close use of the top plate and stacking operation. The present invention relates to a folding device for a top plate and the like, which can achieve smoothness and can provide a new pivot structure for the top plate and the safety of the lock mechanism.

従来、天板の折り畳みテ−ブルは、左右の脚の前後脚を平面上同一直線上に配置しているため、天板を折り畳んでスタッキングする場合、後行のテ−ブルの前脚を先行のテ−ブルの後脚の側方にずらせて配置し、以降、後行のテ−ブルの前脚を側方に交互にずらせてスタッキングしていた（例えば、特許文献１参照）。 Conventionally, the folding table of the top plate has the front and rear legs of the left and right legs arranged on the same straight line on the plane, so when folding the top plate and stacking, the front legs of the following table are preceded by The rear legs of the table are shifted to the side, and thereafter the front legs of the following table are alternately shifted to the side and stacked (for example, see Patent Document 1).

しかし、この従来の折り畳みテ−ブルは、後行のテ−ブルの前脚を側方に交互にずらせて配置する必要があるため、スタッキング作業が煩雑であるとともに、スタッキング状況が猥雑で体裁が悪いという問題があった。 However, this conventional folding table needs to be arranged by alternately shifting the front legs of the following table to the side, so that the stacking operation is complicated, the stacking situation is complicated, and the appearance is bad. There was a problem.

このような問題を解決するものとして、前脚を平面上、後脚の内側に配置し、この前後脚を一体または別設し、天板を折り畳んでスタッキングする際、後行のテ−ブルの前脚を、先行のテ−ブルの後脚の間に差し入れて行なうようにしたものがある（例えば、特許文献２乃至４参照）。 In order to solve such problems, when the front leg is placed on the plane and inside the rear leg, the front and rear legs are integrated or separated, and the top plate is folded and stacked to stack the front leg of the following table Is inserted between the rear legs of the preceding table (see, for example, Patent Documents 2 to 4).

しかし、この従来の折り畳みテ−ブルは、スタッキング状況が改善される反面、前後脚を一体または別設に構成するため、特別の成形や部品点数の増加と組み立ての手数が増え、また通常使用時下での前後脚が猥雑になって体裁が悪い、という問題があった。 However, this conventional folding table improves the stacking situation, but on the other hand, the front and rear legs are integrated or separated, increasing the number of special moldings, the number of parts, and the number of assembly steps. There was a problem that the front and rear legs were messy and looked bad.

しかも、これらの折り畳みテ−ブルは、脚柱の上端にカム溝を形成したブラケットを突設し、前記カム溝にロックピンを係合して天板をロックしており、前記カム溝がスタッキング時に天板の直下に表出するため、天板を復帰回動して使用する際、カム溝に手指が挟まれて怪我をする惧れがあった。 In addition, these folding tables have a bracket with a cam groove formed at the upper end of the pedestal, and a locking pin is engaged with the cam groove to lock the top plate. The cam groove is stacked. Since it sometimes appears directly under the top plate, there was a risk of injury when fingers were caught in the cam groove when the top plate was returned and rotated.

実開平５−４１４２９号公報Japanese Utility Model Publication No. 5-41429 実開平３−６７１３７号公報Japanese Utility Model Publication No. 3-67137 実用新案登録第２５２５３０８号公報Utility Model Registration No. 2525308 実用新案登録第２５７２７５７号公報Utility Model Registration No. 2572757

本発明はこのような問題を解決し、例えば天板の折り畳みテ−ブルに好適で、被折り畳み部である天板の使用時と折り畳み時に一方の脚を内外方向へ移動し、天板の密接使用やスタッキング操作の容易化と円滑性を図るとともに、天板の新規な枢支構造と、ロック機構の安全性を得られる、天板等の折り畳み装置を提供することを目的とする。 The present invention solves such a problem, and is suitable for, for example, a folding table for a top plate. When the top plate as a folding portion is used and folded, one leg is moved inward and outward so that the top plate is closely attached. An object of the present invention is to provide a folding device such as a top plate that facilitates the use and stacking operation and facilitates the smoothness of the top plate and obtains the safety of the lock mechanism and the novel pivot structure of the top plate.

請求項１の発明は、天板等の被折り畳み部と、該被折り畳み部の下面に取り付けた複数の支持枠と、該支持枠に配置した被折り畳み部の枢軸と、前記被折り畳み部の両側部下方に配置した前後脚とを備えた天板等の折り畳み装置において、前記枢軸に可動筒を摺動可能に装着し、該可動筒を前記被折り畳み部の回動変位に連係して軸方向に移動可能に設け、かつ前記可動筒に前記前後脚の何れか一方を同動可能に装着し、天板等の被折り畳み部の通常使用時には、前後脚の姿勢や脚間隔を整然と形成し、その体裁を改善するとともに、被折り畳み部の折り畳み時には、その回動変位によって前後脚の何れか一方を側方へ突出させ、移動側脚の左右の間隔を広げて、一の脚に対し二様の脚間隔を容易かつ自動的に得られ、しかも前記折り畳み時に前後脚の左右の間隔を広狭に設定し、拡大した脚の間に後行のテ−ブル等の狭小な間隔の脚を円滑に差し入れるようにして、スタッキングを円滑かつ容易に行なえるようにしている。 The invention according to claim 1 is a folding part such as a top plate, a plurality of support frames attached to the lower surface of the folding part, a pivot of the folding part arranged on the support frame, and both sides of the folding part. In a folding device such as a top plate provided with front and rear legs arranged below the part, a movable cylinder is slidably mounted on the pivot, and the movable cylinder is axially linked to the rotational displacement of the folding part. It is movably provided, and either one of the front and rear legs is attached to the movable cylinder so as to be movable, and during normal use of a folded part such as a top plate, the posture of the front and rear legs and the leg interval are formed in an orderly manner, In addition to improving the appearance, when folding the folding part, either one of the front and rear legs protrudes to the side by the rotational displacement, widening the left and right spacing of the moving side legs, two ways to one leg Leg spacing can be obtained easily and automatically, and when folded Set the left and right gaps between the front and rear legs to be wide and narrow so that the legs with narrow gaps such as a trailing table can be inserted smoothly between the enlarged legs so that stacking can be performed smoothly and easily. ing.

請求項２の発明は、前記支持枠の間に連結杆を架設し、該連結杆の両端部外面に管状の枢軸を装着し、前記連結杆を相対的に回動可能にするとともに、前記枢軸の外周面に前記可動筒を摺動可能に装着し、枢軸を連結杆で補強し、これらの軸支構造を形成するとともに、枢軸と可動筒との軸支構造を形成し、これらの新たな軸支構造を形成している。
請求項３の発明は、前記被折り畳み部の下面にピンを突設するとともに、前記可動筒の周面にカム溝を装着または形成し、該カム溝に前記ピンを係入し、カム溝とピンを介して、被折り畳み部の回動変位を直線変位に変換し、可動筒を軸方向へ移動するようにしている。 The invention according to claim 2 is characterized in that a connecting rod is installed between the support frames, tubular pivots are mounted on the outer surfaces of both ends of the connecting rod, the connecting rod is relatively rotatable, and the pivot The movable cylinder is slidably mounted on the outer peripheral surface of the shaft, and the pivot is reinforced with a connecting rod to form the pivot support structure, and the pivot support structure of the pivot and the movable barrel is formed. A shaft support structure is formed.
According to a third aspect of the present invention, a pin protrudes from the lower surface of the folded portion, a cam groove is mounted or formed on the peripheral surface of the movable cylinder, the pin is engaged with the cam groove, Via the pin, the rotational displacement of the folded portion is converted into a linear displacement, and the movable cylinder is moved in the axial direction.

請求項４の発明は、前記可動筒に後脚を同動可能に装着し、被折り畳み部の折り畳み時に後脚を側方へ突出させて、左右の後脚の間隔を広げ、被折り畳み部の使用時と折り畳み時に後脚の二様の脚間隔を得られるとともに、通常のスタッキング操作に対応させている
請求項５の発明は、前記前後脚の何れか一方にガイド機構を連結し、該ガイド機構に沿って前記可動筒を摺動可能に装着し、例えば非移動側の脚にガイド機構を連結して、可動筒の確実かつ円滑な作動を実現させるようにしている。
請求項６の発明は、前記左右一対のガイド機構の基部を補強ロッドで連結し、左右一対のガイド機構の変位や捩れを防止し、それらを同軸上に配置させて、可動筒の確実かつ円滑な作動を実現させるようにしている。 According to a fourth aspect of the present invention, a rear leg is movably mounted on the movable cylinder, the rear leg is protruded laterally when the folded part is folded, the distance between the left and right rear legs is increased, and the folded part is The two leg spacings of the rear legs can be obtained during use and folding, and are adapted to normal stacking operations. The invention according to claim 5, wherein a guide mechanism is connected to one of the front and rear legs, and the guide The movable cylinder is slidably mounted along the mechanism, and a guide mechanism is connected to, for example, a non-moving leg so as to realize a reliable and smooth operation of the movable cylinder.
According to the sixth aspect of the present invention, the bases of the pair of left and right guide mechanisms are connected by a reinforcing rod to prevent the pair of left and right guide mechanisms from being displaced and twisted, and are arranged coaxially so that the movable cylinder can be reliably and smoothly moved. To achieve proper operation.

請求項７の発明は、前記ガイド機構の内部に回動軸を回動可能に設け、該回動軸の一端を前記枢軸側に配置し、ガイド機構を補強し、可動筒の支持強度を強化するとともに、枢軸の支持強度を補強するようにしている。
請求項８の発明は、前記ガイド機構を略半円形断面の筒状の二部材を連結し、それらの接合面に前記回動軸を収容可能な係合溝を形成し、ガイド機構を単一部材で構成する場合に比べ、ガイド機構の製作と組み立てを容易に行なうにしている。
請求項９の発明は、前記支持枠に係合部を有する係合孔を形成するとともに、前記可動筒の外周面に軸方向に沿って係合凸部を設け、該係合凸部を前記係合孔に係合可能に配置し、可動筒の安定した作動と、前記脚の安定した作動を実現するようにしている。 According to a seventh aspect of the present invention, a rotating shaft is rotatably provided inside the guide mechanism, one end of the rotating shaft is disposed on the pivot side, the guide mechanism is reinforced, and the support strength of the movable cylinder is enhanced. In addition, the support strength of the pivot is reinforced.
In the invention according to claim 8, the guide mechanism is formed by connecting two cylindrical members having a substantially semicircular cross section, forming an engaging groove capable of accommodating the rotating shaft on the joint surface thereof, and providing a single guide mechanism. Compared to the case of using a member, the guide mechanism is easily manufactured and assembled.
According to the ninth aspect of the present invention, an engagement hole having an engagement portion is formed in the support frame, an engagement protrusion is provided along the axial direction on the outer peripheral surface of the movable cylinder, and the engagement protrusion is It arrange | positions so that engagement to an engagement hole is possible, and it implement | achieves the stable operation | movement of a movable cylinder and the stable operation | movement of the said leg.

請求項１０の発明は、前記支持枠の内側にロックレバ−に連係するロックリンクを回動可能に設け、該ロックリンクの先端部を前記係合凸部に係脱可能に配置し、ロックリンクを支持枠の内側に収容して、ロックリンクの表出を可及的に抑制し、ロック機構における手指の挟み込み事故を未然に防止するようにしている。
請求項１１の発明は、前記前後脚の何れか一方に連結可能な連結ブロックを設け、該連結ブロックの係合部を前記係合凸部に係合し、これらを連結して、前後脚の何れか一方を可動筒に容易かつ確実に連結し得るようにしている。
請求項１２の発明は、前記被折り畳み部が折り畳みテ−ブルの天板または折り畳み椅子の座板で、折り畳みテ−ブルまたは折り畳み椅子のスタッキングに容易に応じられるようにしている。 According to a tenth aspect of the present invention, a lock link linked to a lock lever is rotatably provided inside the support frame, and a distal end portion of the lock link is detachably disposed on the engagement convex portion. It is accommodated inside the support frame to prevent the lock link from being exposed as much as possible, and to prevent a finger pinching accident in the lock mechanism.
The invention according to claim 11 is provided with a connecting block connectable to either one of the front and rear legs, engaging an engaging portion of the connecting block with the engaging convex part, connecting them, Either one can be easily and reliably connected to the movable cylinder.
According to a twelfth aspect of the present invention, the folded portion is a folding table top plate or a folding chair seat plate, and can be easily adapted to the folding table or the folding chair stacking.

請求項１の発明は、枢軸に可動筒を摺動可能に装着し、該可動筒を前記被折り畳み部の回動変位に連係して軸方向に移動可能に設け、かつ前記可動筒に前記前後脚の何れか一方を同動可能に装着したから、天板等の被折り畳み部の通常使用時には、前後脚の姿勢や脚間隔を整然と形成し、その体裁を改善するとともに、被折り畳み部の折り畳み時には、その回動変位によって前後脚の何れか一方を側方へ突出させ、移動側脚の左右の間隔を広げて、一の脚に対し二様の脚間隔を容易かつ自動的に得られ、しかも前記折り畳み時に前後脚の左右の間隔を広狭に設定して、拡大した脚の間に後行のテ−ブル等の狭小な間隔の脚を円滑に差し入れられるようにして、スタッキングを円滑かつ容易に行なうことができる According to a first aspect of the present invention, a movable cylinder is slidably mounted on a pivot, and the movable cylinder is provided so as to be movable in the axial direction in association with the rotational displacement of the folding portion, and the front and rear are mounted on the movable cylinder. Since either one of the legs is mounted so that it can move, during normal use of the folding part such as the top plate, the posture of the front and rear legs and leg spacing are formed in an orderly manner, improving the appearance and folding of the folded part In some cases, one of the front and rear legs protrudes to the side by the rotational displacement, and the distance between the left and right sides of the moving side leg is widened to easily and automatically obtain two leg intervals for one leg. In addition, the left and right legs of the front and rear legs are set wide and narrow so that the legs with a narrow gap such as a trailing table can be smoothly inserted between the enlarged legs, so that stacking is smooth and easy. Can be done

請求項２の発明は、前記支持枠の間に連結杆を架設し、該連結杆の両端部外面に管状の枢軸を装着し、前記連結杆を相対的に回動可能にするとともに、前記枢軸の外周面に前記可動筒を摺動可能に装着したから、枢軸を連結杆で補強し、これらの軸支構造を形成するとともに、枢軸と可動筒との軸支構造を形成し、これらの新たな軸支構造を実現することができる。
請求項３の発明は、前記被折り畳み部の下面にピンを突設するとともに、前記可動筒の周面にカム溝を装着または形成し、該カム溝に前記ピンを係入したから、カム溝とピンを介して、被折り畳み部の回動変位を直線変位に変換し、可動筒を軸方向へ移動することができる。 The invention according to claim 2 is characterized in that a connecting rod is installed between the support frames, tubular pivots are mounted on the outer surfaces of both ends of the connecting rod, the connecting rod is relatively rotatable, and the pivot Since the movable cylinder is slidably mounted on the outer peripheral surface of the shaft, the pivot shaft is reinforced with a connecting rod to form these pivot support structures, and the pivot support structure of the pivot shaft and the movable cylinder is formed. A simple shaft support structure can be realized.
According to a third aspect of the present invention, a pin is protruded from the lower surface of the folding portion, a cam groove is mounted or formed on the peripheral surface of the movable cylinder, and the pin is inserted into the cam groove. Through the pin, the rotational displacement of the folded portion can be converted into a linear displacement, and the movable cylinder can be moved in the axial direction.

請求項４の発明は、前記可動筒に後脚を同動可能に装着したから、被折り畳み部の折り畳み時に後脚を側方へ突出させて、左右の後脚の間隔を広げ、被折り畳み部の使用時と折り畳み時に後脚の二様の脚間隔を得られ、しかも通常のスタッキング操作に対応させることができる。
請求項５の発明は、前記前後脚の何れか一方にガイド機構を連結し、該ガイド機構に沿って前記可動筒を摺動可能に装着したから、例えば非移動側の脚にガイド機構を連結して、可動筒の確実かつ円滑な作動を実現させることができる。
請求項６の発明は、前記左右一対のガイド機構の基部を補強ロッドで連結したから、左右一対のガイド機構の変位や捩れを防止し、それらを同軸上に配置させて、可動筒の確実かつ円滑な作動を実現させることができる。 In the invention of claim 4, since the rear leg is mounted on the movable cylinder so as to be movable, the rear leg protrudes to the side when the folding part is folded, and the interval between the left and right rear legs is widened. When using and folding, it is possible to obtain two leg spacings for the rear legs, and to handle normal stacking operations.
In the fifth aspect of the present invention, a guide mechanism is connected to one of the front and rear legs, and the movable cylinder is slidably mounted along the guide mechanism. For example, the guide mechanism is connected to the non-moving leg. Thus, a reliable and smooth operation of the movable cylinder can be realized.
In the invention of claim 6, since the base portions of the pair of left and right guide mechanisms are connected by the reinforcing rods, the pair of left and right guide mechanisms are prevented from being displaced and twisted, and are arranged coaxially so Smooth operation can be realized.

請求項７の発明は、前記ガイド機構の内部に回動軸を回動可能に設け、該回動軸の一端を前記枢軸側に配置したから、ガイド機構を補強し、可動筒の支持強度を強化するとともに、枢軸の支持強度を補強することができる。
請求項８の発明は、前記ガイド機構を略半円形断面の筒状の二部材を連結し、それらの接合面に前記回動軸を収容可能な係合溝を形成したから、ガイド機構を単一部材で構成する場合に比べ、ガイド機構の製作と組み立てを容易に行なうことができる。
請求項９の発明は、前記支持枠に係合部を有する係合孔を形成するとともに、前記可動筒の外周面に軸方向に沿って係合凸部を設け、該係合凸部を前記係合孔に係合可能に配置したから、可動筒の安定した作動と、前記脚の安定した作動を実現することができる。 According to the seventh aspect of the present invention, since the rotation shaft is rotatably provided inside the guide mechanism, and one end of the rotation shaft is disposed on the pivot side, the guide mechanism is reinforced and the support strength of the movable cylinder is increased. While strengthening, the support strength of the pivot can be reinforced.
In the invention of claim 8, since the guide mechanism is formed by connecting two cylindrical members having a substantially semicircular cross section, and an engaging groove capable of accommodating the rotating shaft is formed on the joint surface thereof, the guide mechanism is simply provided. The guide mechanism can be easily manufactured and assembled as compared with the case of a single member.
According to the ninth aspect of the present invention, an engagement hole having an engagement portion is formed in the support frame, an engagement protrusion is provided along the axial direction on the outer peripheral surface of the movable cylinder, and the engagement protrusion is Since the engagement holes are arranged so as to be engageable with each other, stable operation of the movable cylinder and stable operation of the legs can be realized.

請求項１０の発明は、前記支持枠の内側にロックレバ−に連係するロックリンクを回動可能に設け、該ロックリンクの先端部を前記係合凸部に係脱可能に配置したから、ロックリンクを支持枠の内側に収容して、ロックリンクの表出を可及的に抑制し、ロック機構における手指の挟み込み事故を未然に防止することができる。
請求項１１の発明は、前記前後脚の何れか一方に連結可能な連結ブロックを設け、該連結ブロックの係合部を前記係合凸部に係合し、これらを連結したから、前後脚の何れか一方を可動筒に容易かつ確実に連結することができる。
請求項１２の発明は、前記被折り畳み部が折り畳みテ−ブルの天板または折り畳み椅子の座板であるから、折り畳みテ−ブルまたは折り畳み椅子のスタッキングに容易に応じられる効果がある。 According to a tenth aspect of the present invention, the lock link linked to the lock lever is rotatably provided inside the support frame, and the distal end portion of the lock link is detachably disposed on the engagement convex portion. Can be accommodated inside the support frame to prevent the lock link from being exposed as much as possible, and to prevent a finger pinching accident in the lock mechanism.
The invention according to claim 11 is provided with a connecting block connectable to either one of the front and rear legs, engages the engaging portion of the connecting block with the engaging convex part, and connects them. Either one can be easily and reliably connected to the movable cylinder.
According to the twelfth aspect of the present invention, since the folded portion is a folding table top plate or a folding chair seat plate, there is an effect that the folding table or the folding chair can be easily stacked.

以下、本発明を天板の折り畳みテ−ブルに適用した図示の実施形態について説明すると、図１乃至図１４において１は被折り畳み部である横長矩形の天板で、その両端部の下面に支持枠である略コ字形断面のブラケット２,２がビス止めされ、その一対の屈曲片２ａ,２ａに通孔３と、該通孔３よりも大径で異形の係合孔４とが対向して形成されている。
このうち、内側の通孔３,３間に管状の連結杆５が掛け渡され、その両端部を屈曲片２ａ,２ａ間に突出して配置され、その外周部を通孔３,３の開口縁部に溶接して連結されている。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention applied to a folding table for a top plate will be described below. In FIGS. 1 to 14, reference numeral 1 denotes a horizontally long rectangular top plate which is a folded portion, which is supported on the lower surfaces of both end portions. The brackets 2 and 2 having a substantially U-shaped cross section, which are frames, are screwed, and the pair of bent pieces 2a and 2a are opposed to a through hole 3 and an engagement hole 4 having a larger diameter than the through hole 3 and an odd shape. Is formed.
Among these, a tubular connecting rod 5 is spanned between the inner through holes 3 and 3, and both end portions thereof are arranged so as to protrude between the bent pieces 2 a and 2 a, and the outer edges of the through holes 3 and 3 are opened. It is connected by welding to the part.

前記連結杆５の料端部に筒状ガイド６が若干突出して溶接され、該ガイド６の貫通孔７に回動軸８が挿入され、その一端の頭部８ａが後述するガイド機構の内部に回動可能に掛け止められ、その他端をピン７１を介して連結杆５に固定している。 A cylindrical guide 6 is slightly projected and welded to the end portion of the connecting rod 5, a rotating shaft 8 is inserted into the through hole 7 of the guide 6, and a head portion 8 a at one end thereof is placed inside a guide mechanism described later. The other end is fixed to the connecting rod 5 via a pin 71.

前記連結杆５の両端部の外面に、管状の枢軸を構成する一対の合成樹脂製のスリ−ブ９,９が装着され、その内面を前記連結杆５の外面に密着して対向配置している。
前記スリ−ブ９,９は薄肉の略半円管状に形成され、該スリ−ブ９,９の内面を滑動する連結杆５と、その外面を滑動かつ摺接する可動筒１０を介して、天板１が回動可能に支持されている。 A pair of synthetic resin sleeves 9, 9 constituting a tubular pivot are attached to the outer surfaces of both ends of the connecting rod 5, and the inner surfaces thereof are in close contact with the outer surface of the connecting rod 5. Yes.
The sleeves 9 and 9 are formed in a thin semi-circular tube shape, and are connected to a ceiling via a connecting rod 5 that slides on the inner surface of the sleeves 9 and a movable cylinder 10 that slides and contacts the outer surface. A plate 1 is rotatably supported.

一方、大径かつ異形の前記係合孔４に、屈曲片２ａの外側から前記可動筒１０が摺動可能に嵌合している。
前記可動筒１０は、アルミニウムダイカストによって中空筒状に形成され、その外周面に略角形断面の係合凸部１１を突設し、該凸部１１を係合孔４の係合部４ａに摺動可能に嵌合している。 On the other hand, the movable cylinder 10 is slidably fitted into the large-diameter and irregularly shaped engagement hole 4 from the outside of the bent piece 2a.
The movable cylinder 10 is formed in a hollow cylinder shape by aluminum die casting, and an engaging convex portion 11 having a substantially square cross section is provided on the outer peripheral surface thereof, and the convex portion 11 is slid onto the engaging portion 4 a of the engaging hole 4. It is movably fitted.

前記可動筒１０の内側端部周面に複数のネジ孔１２が形成され、該ネジ孔１２にビス（図示略）を介して、カムシリンダ−１３が取り付けられている。
前記カムシリンダ−１３は、アルミニウムダイカストによって略半円管状に形成され、その周面に緩やかなヘリカル状のカム溝１４が形成され、該カム溝１４に合成樹脂製のスライドチュ−ブ１５を介して、ピンとしてカムピン１６が嵌合している。 A plurality of screw holes 12 are formed in the inner end peripheral surface of the movable cylinder 10, and a cam cylinder 13 is attached to the screw holes 12 via screws (not shown).
The cam cylinder 13 is formed in a substantially semicircular tube shape by aluminum die casting, and a gentle helical cam groove 14 is formed on the peripheral surface thereof, and a synthetic resin slide tube 15 is interposed in the cam groove 14. The cam pin 16 is fitted as a pin.

すなわち、前記カムピン１６は天板１と同動してカム溝１４を移動し、その回動変位をカム溝１４を介して直線変位に変換し、その直線変位をカムシリンダ−１３と一体の可動筒１０へ伝達し、該可動筒１０を軸方向の内外方向へ移動可能にしている。
前記カムピン１６は実施形態の場合、天板１の通常使用時はカム溝１４の内側端部に位置し、天板１の折り畳み時はカム溝１４の外側端部に移動し、カム溝１４の直線変位分、天板１の使用時よりも可動筒１０を外側へ移動し、可動筒１０に連結した後述する後脚を同動させて、スタッキング時に後続テ−ブルの前脚の挿入を容易にさせ、スタッキングの容易化を図るようにしている。 That is, the cam pin 16 moves together with the top plate 1 to move in the cam groove 14, converts its rotational displacement into a linear displacement through the cam groove 14, and the linear displacement is movable integrally with the cam cylinder 13. This is transmitted to the cylinder 10 so that the movable cylinder 10 is movable inward and outward in the axial direction.
In the embodiment, the cam pin 16 is positioned at the inner end portion of the cam groove 14 when the top plate 1 is normally used, and moves to the outer end portion of the cam groove 14 when the top plate 1 is folded. The movable cylinder 10 is moved outwardly by the amount of linear displacement than when the top plate 1 is used, and the rear legs connected to the movable cylinder 10 are moved to facilitate the insertion of the front legs of the subsequent table during stacking. To facilitate stacking.

この反対に天板１の通常使用時は、その折り畳み時よりもカム溝１４の直線変位分、可動筒１０を内側へ移動し、これに後脚を同動させて平面的に前脚と同位置に移動し、隣接するテ−ブルの脚同士の接触を回避し、テ−ブルの密着配置を実現可能にしている。
なお、カムシリンダ−１３にカム溝１４を形成する代わりに、可動筒１０にカム溝１４を直接形成してもよく、そのようにすればカムシリンダ−１３が不要になり、その分部品点数の低減を図れる。 On the other hand, when the top plate 1 is in normal use, the movable cylinder 10 is moved inward by the amount of linear displacement of the cam groove 14 compared to when the top plate 1 is folded, and the rear leg is moved to this position so that the same position as the front leg is obtained. The contact between the legs of the adjacent tables is avoided, and the close contact arrangement of the tables can be realized.
Instead of forming the cam groove 14 in the cam cylinder 13, the cam groove 14 may be formed directly in the movable cylinder 10, so that the cam cylinder 13 becomes unnecessary, and the number of parts is accordingly increased. Reduction can be achieved.

図中、１７はカムシリンダ−１３の四隅に形成したビス孔、１８はブラケット２の中間部に突設したボスで、その内面と天板１の下面との間にカムピン１６のピンデスク１９が収容され、前記ボス１８の中央にカムピン１６を突出可能な透孔２０が形成されている。
２１は連結杆５の両端部周面に形成した凹孔で、該孔２１にスリ−ブ９の内面に突設したストッパピン（図示略）が挿入されている。２２はブラケット２に形成したビス孔で、天板１の取付け用ビス（図示略）を挿入可能にしている。 In the figure, 17 is a screw hole formed at the four corners of the cam cylinder 13, and 18 is a boss projecting from the middle part of the bracket 2, and the pin desk 19 of the cam pin 16 is accommodated between the inner surface and the lower surface of the top plate 1. In addition, a through hole 20 through which the cam pin 16 can protrude is formed in the center of the boss 18.
21 is a concave hole formed in the peripheral surface of both ends of the connecting rod 5, and a stopper pin (not shown) protruding from the inner surface of the sleeve 9 is inserted into the hole 21. A screw hole 22 is formed in the bracket 2 so that a mounting screw (not shown) for attaching the top plate 1 can be inserted.

前記可動筒１０の内面の等角度位置に複数、実施形態では３つの球受溝２３が軸方向に沿って形成され、該球受溝２３の開口側周面に、ベアリング機構を構成する複数のボ−ルホルダ−２４〜２６が円周方向に配置されている。
前記ボ−ルホルダ−２４〜２６は、合成樹脂によって大小の曲面板状に形成され、このうち大形のボ−ルホルダ−２４は円周方向の両側に曲面板状の連結片２４ａ,２４ａを突設し、該連結片２４ａ,２４ａにピン孔２７を介して、小形のボ−ルホルダ−２５,２６をピン連結している。 A plurality of, in the embodiment, three ball receiving grooves 23 are formed along the axial direction at equiangular positions on the inner surface of the movable cylinder 10, and a plurality of bearing mechanisms are formed on the opening-side peripheral surface of the ball receiving groove 23. Ball holders 24 to 26 are arranged in the circumferential direction.
The ball holders 24 to 26 are formed in a large and small curved plate shape by a synthetic resin, and the large ball holder 24 projects the curved plate-like connecting pieces 24a and 24a on both sides in the circumferential direction. The small ball holders 25 and 26 are pin-connected to the connecting pieces 24a and 24a through the pin holes 27.

前記ボ−ルホルダ−２４の周面に複数の透孔２８が軸方向に形成され、また小形のボ−ルホルダ−２５,２６の端縁に略半円状の複数の切欠孔２９が軸方向に形成され、これらの透孔２８と切欠孔２９に、内側から鋼球等の複数の球３０が転動可能に係合している。
前記球３０の一端は、前記球受溝２３に転動可能に係合し、他端がガイド機構３１に転動可能に係合している。 A plurality of through holes 28 are formed in the axial direction on the peripheral surface of the ball holder 24, and a plurality of substantially semicircular notch holes 29 are formed in the axial direction at the edges of the small ball holders 25 and 26. A plurality of balls 30 such as steel balls are engaged with the through holes 28 and the cutout holes 29 so as to be able to roll.
One end of the ball 30 is engaged with the ball receiving groove 23 in a rollable manner, and the other end is engaged with the guide mechanism 31 in a rollable manner.

すなわち、前記ボ−ルホルダ−２４〜２６はガイド機構３１の周面に摺動可能に装着され、その移動位置を後述の凸部で規制されている。
前記ガイド機構３１は実施形態の場合、テ−ブルの前脚の上端部に適用され、これを第１および第２筒状ガイド３１ａ,３１ｂの二部材で構成し、それらを上下に配置して接合かつ連結している。 That is, the ball holders 24 to 26 are slidably mounted on the peripheral surface of the guide mechanism 31 and their movement positions are restricted by the convex portions described later.
In the case of the embodiment, the guide mechanism 31 is applied to the upper end portion of the front leg of the table. The guide mechanism 31 is composed of two members, the first and second cylindrical guides 31a and 31b. And they are connected.

前記第１および第２筒状ガイド３１ａ,３１ｂは、アルミニウムダイカストによって略半割り柱状に成形され、それらの断面は前記可動筒１０の内面を二つ割りした略半月状断面に形成され、それらの接合部に平坦な接合面３２,３３を形成している。
前記接合面３２,３３の略内側半部に、前記回動軸８とその頭部８ａを収容可能な略半円形断面の樋状の係合溝３４,３５と、該溝３４,３５の端部に形成した略半円形断面の嵌合溝３６,３７とが形成され、係合溝３４,３５の長さは回動軸８の長さの略１／３に形成されている。 The first and second cylindrical guides 31a and 31b are formed in a substantially half-columnar shape by aluminum die casting, and their cross-sections are formed in a substantially half-moon-like cross section obtained by dividing the inner surface of the movable cylinder 10 into two parts. Flat joint surfaces 32 and 33 are formed.
In substantially inner half portions of the joint surfaces 32 and 33, hook-like engagement grooves 34 and 35 having a substantially semicircular cross section capable of accommodating the rotating shaft 8 and the head portion 8a thereof, and ends of the grooves 34 and 35 are provided. Fitting grooves 36 and 37 having a substantially semicircular cross section formed in the portion are formed, and the length of the engaging grooves 34 and 35 is formed to be approximately 1/3 of the length of the rotating shaft 8.

前記接合面３２に複数のピン孔３８が形成され、該ピン孔３８に対応する接合面３３の所定位置に、複数のピン３９が嵌合可能に突設されている。
前記第１筒状ガイド３１ａの外周面の両側に、略半円形断面の樋状の係合溝４０が形成され、また前記第２筒状ガイド３１ｂの外周面は平滑に形成され、その上端部に略半円形断面の樋状の係合溝４１が形成され、該係合溝４０,４１に前記球３０が転動かつ係合可能に収容されている。 A plurality of pin holes 38 are formed in the joint surface 32, and a plurality of pins 39 project from the predetermined positions of the joint surface 33 corresponding to the pin holes 38 so as to be fitted.
A hook-like engagement groove 40 having a substantially semicircular cross section is formed on both sides of the outer peripheral surface of the first cylindrical guide 31a, and the outer peripheral surface of the second cylindrical guide 31b is formed smoothly, and an upper end portion thereof. A hook-like engagement groove 41 having a substantially semicircular cross section is formed in the engagement groove 40, 41, and the ball 30 is accommodated in a rollable and engageable manner.

図中、４２は前記第２筒状ガイド３１ｂの外周面の両端部に突設した凸部で、ボ−ルホルダ−２４と係合可能に配置され、該ホルダ−２４の移動を規制している。
前記可動筒１０の外端部に切欠溝４３が軸方向に形成され、該溝４３の長さ分、ガイド機構３１に対する可動筒１０の移動を許容している。
前記第１筒状ガイド３１ａの下部に軸部４４が一体に突出成形され、該軸部４４に管状の前脚４５が嵌合して固定され、該脚４５の下端部にキャスタ−４６が取り付けられている。 In the figure, 42 is a convex portion projecting from both ends of the outer peripheral surface of the second cylindrical guide 31b, and is disposed so as to be able to engage with the ball holder 24, thereby restricting the movement of the holder 24. .
A notch groove 43 is formed in the axial direction at the outer end of the movable cylinder 10 to allow the movable cylinder 10 to move relative to the guide mechanism 31 by the length of the groove 43.
A shaft portion 44 is integrally projected and formed at the lower portion of the first cylindrical guide 31a. A tubular front leg 45 is fitted and fixed to the shaft portion 44, and a caster 46 is attached to the lower end portion of the leg 45. ing.

図中、４７はアルミニウムダイカスト製の下側連結ブロックで、その一側に前記係合凸部１１の下部に係合可能な係合部４８を備え、該係合部４８の上面に一対のブラケット４９,４９を対向して突設している。
前記ブラケット４９,４９にネジ孔５０,５０が形成され、該ブラケット４９,４９の間に上側連結ブロック５１の張出片５２が挿入され、その通孔５３にボルト５４をねじ込んで、上下側連結ブロック４７,５１を連結している。 In the figure, reference numeral 47 denotes a lower connecting block made of aluminum die casting, which has an engaging portion 48 that can be engaged with the lower portion of the engaging convex portion 11 on one side, and a pair of brackets on the upper surface of the engaging portion 48. 49 and 49 are protruded facing each other.
Screw holes 50, 50 are formed in the brackets 49, 49, an overhanging piece 52 of the upper connection block 51 is inserted between the brackets 49, 49, and bolts 54 are screwed into the through holes 53 to connect the upper and lower sides. The blocks 47 and 51 are connected.

前記上側連結ブロック５１はアルミニウムダイカストで成形され、その一側に前記係合凸部１１の上部に係合可能な係合部５５を備え、該係合部５５の下面を前記係合部４８の上面にビス止めしている。
前記係合部４８の上面と係合部５５の下面は係合可能な平坦面を有し、それらの係合面に通孔６７とネジ孔６８が形成され、それらにボルト６９をねじ込んで連結している。 The upper connecting block 51 is formed by aluminum die casting, and has an engaging portion 55 that can be engaged with the upper portion of the engaging convex portion 11 on one side, and the lower surface of the engaging portion 55 is connected to the engaging portion 48. Screwed on top.
The upper surface of the engaging portion 48 and the lower surface of the engaging portion 55 have a flat surface that can be engaged. A through hole 67 and a screw hole 68 are formed in the engaging surface, and a bolt 69 is screwed into the connection surface. is doing.

前記下側連結ブロック４７の下部に軸部５６が一体に突出成形され、該軸部５６に管状の後脚５７が嵌合して固定され、該後脚５７の下端部にキャスタ−５８が取り付けられている。前記前脚４５と後脚５７は図３のように前後方向へ互いに斜状に配置され、その間隔を下方に向かって略漸増させている。 A shaft portion 56 is integrally formed at the lower portion of the lower connection block 47, and a tubular rear leg 57 is fitted and fixed to the shaft portion 56. A caster 58 is attached to the lower end portion of the rear leg 57. It has been. As shown in FIG. 3, the front leg 45 and the rear leg 57 are arranged obliquely in the front-rear direction, and the distance between them is gradually increased downward.

この他、図中、５９は可動筒１０とブラケット４９の外端部に装着したキャップ、６０は前脚４５の上部に取り付けた補強金具で、該金具６０,６０の間に補強ロッド６１が掛け渡され、第１および第２筒状ガイド３１ａ,３１ｂの捩りを防止し、これらと可動筒１０との円滑な摺動を実現するようにしている。
前記ブラケット２の屈曲片２ａ,２ａの後端部間に、ロックレバ−６２が回動可能に軸支され、常時は捩りバネ（図示略）を介して、原位置に復帰回動可能に付勢されている。 In addition, in the figure, 59 is a cap attached to the outer end portion of the movable cylinder 10 and the bracket 49, 60 is a reinforcing metal fitting attached to the upper part of the front leg 45, and a reinforcing rod 61 is spanned between the metal fittings 60, 60. Thus, the first and second cylindrical guides 31a and 31b are prevented from being twisted, and smooth sliding between them and the movable cylinder 10 is realized.
A lock lever 62 is pivotally supported between the rear ends of the bent pieces 2a, 2a of the bracket 2, and is normally urged to return to the original position via a torsion spring (not shown). Has been.

前記ロックレバ−６２にリンク６３の一端が連結され、この他端がロックリンク６４の先端部に連結されている。
前記ロックリンク６４は、前記係合凸部１１に係合可能に取り付けられ、その基部をブラケット２,２間に掛け渡したロックバ−６５に回動可能に支持され、常時は係合凸部１１に係合して、天板１の折り畳み作動を阻止している。図中、６６は屈曲片２ａ,２ａの間に取り付けた保護カバ−、７０は床面である。 One end of the link 63 is connected to the lock lever 62, and the other end is connected to the tip of the lock link 64.
The lock link 64 is attached to the engagement convex portion 11 so as to be engageable, and is rotatably supported by a lock bar 65 having a base portion spanned between the brackets 2 and 2. The folding operation of the top plate 1 is prevented. In the figure, 66 is a protective cover attached between the bent pieces 2a, 2a, and 70 is a floor surface.

なお、前述の実施形態ではガイド機構３１を第１および第２筒状ガイド３１ａ,３１ｂの二部材で構成しているが、これを単一部材で構成することも可能である。
例えば、第１および第２筒状ガイド３１ａ,３１ｂを単一の円筒状に形成し、その内部に回動軸８を軸周りに回動可能に埋設または組み付ければ良く、そのようにすることで部品点数を低減し、その組み立ての手間を軽減できる利点がある。
また、前述の実施形態ではガイド機構３１を前脚に適用しているが、後脚に適用することも可能である。 In the above-described embodiment, the guide mechanism 31 is composed of two members, the first and second cylindrical guides 31a and 31b. However, it is also possible to configure this as a single member.
For example, the first and second cylindrical guides 31a and 31b may be formed in a single cylindrical shape, and the rotation shaft 8 may be embedded or assembled so as to be rotatable about the axis. Thus, there is an advantage that the number of parts can be reduced and the labor of assembling can be reduced.
In the above-described embodiment, the guide mechanism 31 is applied to the front leg, but it can also be applied to the rear leg.

このように構成した本発明を適用した天板の折り畳みテ−ブルは、天板１と、その折り畳み機構およびそのロック機構と、前後脚４５,５７の基本的な構成は従来と同様であるが、前後脚４５,５７の一方、実施形態では後脚５７を天板１の使用時と折り畳み時とで内外方向へ移動させているため、その部分の構成と組み立てを要する。その概要は次のようである。 The folding table of the top plate to which the present invention configured as described above is applied is basically the same as the conventional configuration of the top plate 1, its folding mechanism and its locking mechanism, and the front and rear legs 45 and 57. One of the front and rear legs 45, 57, in the embodiment, the rear leg 57 is moved inward and outward when the top plate 1 is used and folded, so that the configuration and assembly of that part are required. The outline is as follows.

すなわち、ブラケット２にボス１８を形成し、該ボス１８と天板１の下面との間にカムピン１６を取り付け、該ピン１６にスライドチュ−ブ１５を装着する。
前記ブラケット２の屈曲片２ａ,２ａに、通孔３と通孔３よりも大径かつ異形の係合孔４を形成し、左右のブラケット２の通孔３,３に連結杆５を挿入し、該杆５を通孔３の開口縁部に溶接し、その両端部を屈曲片２ａ,２ａ間に位置付ける。この状況は図９のようである。 That is, the boss 18 is formed on the bracket 2, the cam pin 16 is attached between the boss 18 and the lower surface of the top plate 1, and the slide tube 15 is attached to the pin 16.
The bent pieces 2a, 2a of the bracket 2 are formed with through holes 3 and engaging holes 4 having a larger diameter and different shape than the through holes 3, and the connecting rods 5 are inserted into the through holes 3, 3 of the left and right brackets 2. The flange 5 is welded to the opening edge of the hole 3, and both ends thereof are positioned between the bent pieces 2a and 2a. This situation is as shown in FIG.

前記連結杆５の両端部に予め筒状ガイド６を若干突出して溶接し、その外周面に一対のスリ−ブ９,９を定位置に取り付け、該スリ−ブ９,９の外周に係合孔４の外側から可動筒１０を嵌合し、その係合凸部１１を係合部４ａに係合する。
そして、可動筒１０の係合凸部１１を係合部４ａに係合し、その内側端部周面にカムシリンダ−１３を取り付け、そのカム溝１４に前記スライドチュ−ブ１５を係入する。この状況は図１０のようである。 The cylindrical guide 6 is slightly protruded and welded to both ends of the connecting rod 5 in advance, and a pair of sleeves 9 and 9 are attached to fixed positions on the outer peripheral surface thereof, and engaged with the outer periphery of the sleeve 9 and 9. The movable cylinder 10 is fitted from the outside of the hole 4, and the engagement convex portion 11 is engaged with the engagement portion 4 a.
Then, the engaging convex portion 11 of the movable cylinder 10 is engaged with the engaging portion 4 a, the cam cylinder 13 is attached to the inner end peripheral surface, and the slide tube 15 is engaged with the cam groove 14. . This situation is as shown in FIG.

前記可動筒１０とカムシリンダ−１３をアルミダイカスト成形し、該可動筒１０の内部に第１および第２筒状ガイド３１ａ,３１ｂを挿入し、該筒状ガイド３１ａ,３１ｂの外周面にボ−ルホルダ−２４〜２６を装着し、それらの通孔２８と切欠孔２９に内側から球２９を係入し、該球２９の外端部を可動筒１０内の球受溝２３に係合し、該球２９の内端部を前記筒状ガイド３１ａ,３１ｂの係合溝４０,４１に係合する。この状況は図１１のようである。 The movable cylinder 10 and the cam cylinder 13 are formed by aluminum die casting, the first and second cylindrical guides 31a and 31b are inserted into the movable cylinder 10, and the outer peripheral surfaces of the cylindrical guides 31a and 31b are bored. Are attached to the through holes 28 and the cutout holes 29, and the outer ends of the balls 29 are engaged with the ball receiving grooves 23 in the movable cylinder 10, The inner end of the sphere 29 is engaged with the engaging grooves 40 and 41 of the cylindrical guides 31a and 31b. This situation is as shown in FIG.

前記第１および第２筒状ガイド３１ａ,３１ｂをアルミダイカスト成形し、それらを接合して連結するとともに、その接合面３２,３３に形成した係合溝３４〜３７に、回動軸８とその頭部８ａを収容する。
そして、回動軸８を筒状ガイド６の貫通孔７に挿入し、その先端部に連結杆５の外側からピン７１を差し込み、回動軸８を連結杆５に固定する。この状況は図５および図１１のようである。 The first and second cylindrical guides 31a and 31b are formed by die-casting aluminum, joined and joined, and the engaging shafts 34 to 37 formed on the joining surfaces 32 and 33 are provided with the rotating shaft 8 and the The head 8a is accommodated.
Then, the rotation shaft 8 is inserted into the through hole 7 of the cylindrical guide 6, and a pin 71 is inserted from the outside of the connecting rod 5 into the tip thereof, and the rotating shaft 8 is fixed to the connecting rod 5. This situation is as shown in FIGS.

前記可動筒１０の係合凸部１１の外周面に上下側連結ブロック４７,５１を上下に位置付け、それらの係合部４８,５５を係合して配置するとともに、これらをボルト５４,６９で連結し、その軸部４４,５６に前脚４５と後脚５７とを嵌合して連結する。
そして、前脚４５の上部に補強金具６０を取り付け、該金具６０,６０の間に補強ロッド６１を掛け渡す。こうして組み付けた折り畳みテ−ブルは図１乃至図３のようである。 The upper and lower connecting blocks 47 and 51 are positioned vertically on the outer peripheral surface of the engaging projection 11 of the movable cylinder 10 and are engaged with the engaging portions 48 and 55, and these are connected by bolts 54 and 69. The front legs 45 and the rear legs 57 are fitted and connected to the shaft portions 44 and 56.
Then, the reinforcing metal fitting 60 is attached to the upper part of the front leg 45, and the reinforcing rod 61 is spanned between the metal fittings 60, 60. The folding table assembled in this way is as shown in FIGS.

このような折り畳みテ−ブルにおいて、天板１の使用時は、カム溝１４の一端部にカムピン１６が係合し、また可動筒１０の係合凸部１１がブラケット２の係合孔４の係合部４ａに係合し、該係合凸部１１の外面にロックリンク６４の先端部が係合して、可動筒１０の回動を強力に阻止し、天板１を水平に保持している。この状況は図５および図６のようである。 In such a folding table, when the top plate 1 is used, the cam pin 16 is engaged with one end portion of the cam groove 14, and the engagement convex portion 11 of the movable cylinder 10 is the engagement hole 4 of the bracket 2. The engagement portion 4a is engaged, and the distal end portion of the lock link 64 is engaged with the outer surface of the engagement convex portion 11 to strongly prevent the movable cylinder 10 from rotating, and the top plate 1 is held horizontally. ing. This situation is as shown in FIGS.

このような天板１の使用時は、可動筒１０が移動変位の最も内側に位置し、該可動筒１０に連結したガイド機構３１と一体的な後脚５７も最も内側に位置し、前後脚４５，５７が平面的には前後方向の直線上に位置している。
この状況は図１乃至図３および図１２のようで体裁が良く、それらが整然としていて下端部のキャスタ−４６，５８が天板１の外側から突出することがないから、複数のテ−ブルを近接配置し、天板１同士を密接して使用することが可能になる。 When such a top plate 1 is used, the movable cylinder 10 is located on the innermost side of the movement displacement, and the rear leg 57 integrated with the guide mechanism 31 connected to the movable cylinder 10 is also located on the innermost side. 45 and 57 are located on a straight line in the front-rear direction in plan view.
1 to 3 and FIG. 12, this situation is good, and they are orderly and the casters -46 and 58 at the lower end portion do not protrude from the outside of the top plate 1. The bulls are arranged close to each other, and the top plates 1 can be used in close contact with each other.

このような状況から天板１の使用後、これを折り畳んでスタッキングする場合は、ロックレバ−６２を操作し、これをロックバ−６５を中心に回動して、ロックリンク６４と係合凸部１１との係合を解除し、この状況の下で天板１の後端部を連結杆５を支点に押し上げる。
このようにすると、天板１にブラケット２,２が同動し、該ブラケット２,２間に固定した連結杆５が、回動軸８を中心にスリ−ブ９の内面を滑動し、天板１が上向きに押し回わされて折り畳まれる。 In this situation, when the top plate 1 is used and folded for stacking, the lock lever 62 is operated and rotated around the lock bar 65 so that the lock link 64 and the engaging convex portion 11 are operated. In this state, the rear end of the top plate 1 is pushed up with the connecting rod 5 as a fulcrum.
In this way, the brackets 2 and 2 move on the top plate 1, and the connecting rod 5 fixed between the brackets 2 and 2 slides on the inner surface of the sleeve 9 about the rotating shaft 8. The plate 1 is pushed upward and folded.

こうして天板１が折り畳まれると、その回動支点の直上に位置するカムピン１６が天板１およびブラケット２と同動し、その回動変位を係入するカム溝１４に作用する。
すなわち、天板１の折り畳み角度分、カムピン１６がカム溝１４に沿って相対的に移動し、該ピン１６の回動変位がカムシリンダ−１３の直線変位に変換され、この直線変位がカムシリンダ−１３を連結した可動筒１０に伝えられる。 When the top plate 1 is folded in this way, the cam pins 16 positioned immediately above the pivot fulcrum move together with the top plate 1 and the bracket 2 and act on the cam groove 14 for engaging the rotational displacement.
That is, the cam pin 16 relatively moves along the cam groove 14 by the folding angle of the top plate 1, and the rotational displacement of the pin 16 is converted into the linear displacement of the cam cylinder 13, and this linear displacement is converted into the cam cylinder. -13 is transmitted to the movable cylinder 10 connected thereto.

このため、可動筒１０の内側半部がスリ−ブ９上を滑動し、また外側半部が係合溝４０,４１を転動する球３０を介して、第１および第２筒状ガイド３１ａ,３１ｂの外面に沿って天板１の側方へ移動し、その外端部が天板１の側方へ突出する。
この結果、可動筒１０の外面に連結した上下側連結ブロック４７,５１と、可動筒１０とが同動し、これに下側連結ブロック４７に連結した後脚５７が同動して、天板１の側方へ突出する。 For this reason, the first half and the second cylindrical guide 31a are provided via the ball 30 in which the inner half of the movable cylinder 10 slides on the sleeve 9 and the outer half rolls on the engaging grooves 40 and 41. , 31b moves to the side of the top plate 1 along its outer surface, and its outer end protrudes to the side of the top plate 1.
As a result, the upper and lower connection blocks 47 and 51 connected to the outer surface of the movable cylinder 10 and the movable cylinder 10 move together, and the rear leg 57 connected to the lower connection block 47 moves and the top plate 1 protrudes to the side.

こうして、カムピン１６がカム溝１４に他端に移動し、これにカムシリンダ−１３と可動筒１０が同動して図５上左方へ移動し、カムピン１６がカム溝１４の他端に当接したところで、天板１の折り畳み作動が停止する。この状況は図１４のようである。
なお、前脚４５,４５は補強ロッド６１で連結され、不動に構成されているから、後脚５７のように移動しない。 Thus, the cam pin 16 moves to the cam groove 14 to the other end, and the cam cylinder 13 and the movable cylinder 10 move together to move to the left in FIG. 5, and the cam pin 16 contacts the other end of the cam groove 14. At the point of contact, the folding operation of the top board 1 stops. This situation is as shown in FIG.
The front legs 45, 45 are connected by the reinforcing rod 61 and are configured so as not to move, so that they do not move like the rear legs 57.

この場合、左右の軸部４４,４４が前記補強ロッド６１を介して支持され、前記軸部４４,４４と一体の第１筒状ガイド３１ａ, ３１ａが同軸上に保持され、これに連結した第２筒状ガイド３１ｂも同軸上に保持され、したがって左右のガイド機構３１が同軸配置を堅持するから、前記可動筒１０の円滑かつ正確な作動を促す。 In this case, the left and right shaft portions 44, 44 are supported via the reinforcing rod 61, and the first cylindrical guides 31a, 31a integral with the shaft portions 44, 44 are held coaxially and connected to the first cylindrical guides 31a, 31a. The two cylindrical guides 31b are also held on the same axis, so that the left and right guide mechanisms 31 maintain the same coaxial arrangement, which facilitates the smooth and accurate operation of the movable cylinder 10.

このように天板１の折り畳み時は、図１３のように後脚５７が天板１の側方へ突出し、
前脚５７が天板１の使用時と同位置に位置し、後脚５７,５７の間隔が広がる。
したがって、後脚５７,５７の間に折り畳み後の後続のテ−ブルの前脚４５,４５を容易かつ円滑に差し入れられるから、スタッキングを容易かつ速やかに行なえ、簡便に行なえる。 Thus, when the top plate 1 is folded, the rear leg 57 protrudes to the side of the top plate 1 as shown in FIG.
The front leg 57 is located at the same position as when the top board 1 is used, and the distance between the rear legs 57 and 57 is widened.
Accordingly, since the front legs 45, 45 of the subsequent table after folding can be easily and smoothly inserted between the rear legs 57, 57, stacking can be easily and quickly performed.

一方、折り畳んだテ−ブルを使用する場合は、これを所望位置へ移動し、天板１の後端部、つまり上端部を保持して、連結杆５を支点に引き下げる。
このようにすると、天板１にブラケット２,２が同動し、該ブラケット２,２間に固定した連結杆５が、回動軸８を中心にスリ−ブ９の内面を滑動して、天板１が下向きに引き回わされる。 On the other hand, when the folded table is used, the table is moved to a desired position, the rear end portion of the top plate 1, that is, the upper end portion is held, and the connecting rod 5 is pulled down to the fulcrum.
In this way, the brackets 2 and 2 move on the top plate 1, and the connecting rod 5 fixed between the brackets 2 and 2 slides on the inner surface of the sleeve 9 around the rotation shaft 8. The top plate 1 is drawn downward.

そして、天板１の下方への復帰回動によって、カムピン１６がカム溝１４に沿って相対的に移動し、該ピン１６の回動変位がカムシリンダ−１３の直線変位に変換され、この直線変位がカムシリンダ−１３を連結した可動筒１０に伝えられる。 The cam pin 16 is relatively moved along the cam groove 14 by the downward rotation of the top plate 1, and the rotational displacement of the pin 16 is converted into the linear displacement of the cam cylinder 13. The displacement is transmitted to the movable cylinder 10 connected to the cam cylinder-13.

この結果、可動筒１０の内側半部がスリ−ブ９上を滑動し、また外側半部が係合溝４０,４１を転動する球３０を介して、第１および第２筒状ガイド３１ａ,３１ｂの外面に沿って天板１の内側へ移動する。
そして、上下側連結ブロック４７,５１が可動筒１０と同動し、これに下側連結ブロック４７に連結した後脚５７が同動して、天板１の内側へ移動する。この状況は図１乃至図３および図１２のようである。
この場合、前脚４５,４５は補強ロッド６１で連結され、不動に構成されているから、後脚５７のように移動しない。 As a result, the first and second cylindrical guides 31a are moved via the ball 30 in which the inner half of the movable cylinder 10 slides on the sleeve 9 and the outer half rolls on the engaging grooves 40 and 41. , 31b moves to the inside of the top board 1 along the outer surface.
Then, the upper and lower connection blocks 47 and 51 are moved together with the movable cylinder 10, and the rear legs 57 connected to the lower connection block 47 are moved together and moved to the inside of the top plate 1. This situation is as shown in FIGS. 1 to 3 and FIG.
In this case, the front legs 45, 45 are connected by the reinforcing rod 61 and are configured not to move, so that they do not move like the rear legs 57.

こうして、カムピン１６がカム溝１４に一端に移動し、これにカムシリンダ−１３と可動筒１０が同動して図１４上右方へ移動し、カムピン１６がカム溝１４の一端に当接し、係合凸部１１がロックリンク６４の先端に係合したところで、天板１の復帰作動が停止する。
この状況は図５および図６のようで、天板１が水平に支持され、その後の使用が可能になる。 Thus, the cam pin 16 moves to one end of the cam groove 14, and the cam cylinder 13 and the movable cylinder 10 move together to move to the right in FIG. 14. The cam pin 16 comes into contact with one end of the cam groove 14, When the engaging projection 11 is engaged with the tip of the lock link 64, the return operation of the top plate 1 is stopped.
This situation is as shown in FIG. 5 and FIG. 6, and the top plate 1 is supported horizontally and can be used thereafter.

このように天板１の復帰作動後は、可動筒１０が移動変位の最も内側に復帰し、該可動筒１０に連結したガイド機構３１と一体的な後脚５７も最も内側に復帰し、前後脚４５，５７が平面的に前後方向の直線上に位置する。
この状況は図１乃至図３および図１２のようで、それらが整然としていて下端部のキャスタ−４６，５８が天板１の外側から突出することがないから、複数のテ−ブルを近接配置し、天板１同士を密接して使用することが可能になる。 Thus, after the return operation of the top plate 1, the movable cylinder 10 returns to the innermost side of the movement displacement, and the rear leg 57 integrated with the guide mechanism 31 connected to the movable cylinder 10 also returns to the innermost side. Legs 45 and 57 are planarly positioned on a straight line in the front-rear direction.
This state is as shown in FIG. 1 to FIG. 3 and FIG. 12, and since they are orderly and the casters -46 and 58 at the lower end do not protrude from the outside of the top plate 1, a plurality of tables are brought close to each other. It becomes possible to arrange and use top plates 1 closely.

なお、前述の実施形態は本発明を折り畳みテ−ブルに適用し、折り畳み対象を天板１に設定しているが、折り畳みテ−ブルの代わりに、折り畳み椅子に適用し、被折り畳み部を天板１の代わりに座板に応用することも可能であり、その場合の基本的な構成は前述の折り畳みテ−ブルと実質的に同一である。 In the above-described embodiment, the present invention is applied to the folding table and the folding target is set to the top board 1. However, instead of the folding table, the folding table is applied to the folding chair and the folding portion is mounted on the ceiling table. It is also possible to apply to a seat plate instead of the plate 1, and the basic configuration in that case is substantially the same as the folding table described above.

このように本発明の天板等の折り畳み装置は、被折り畳み部である天板の使用時と折り畳み時に一方の脚を内外方向へ移動し、天板の密接使用やスタッキング操作の容易化と円滑性を図るとともに、天板の新規な枢支構造と、ロック機構の安全性を得られるから、例えば天板の折り畳みテ−ブルに好適である。 As described above, the folding device such as the top plate according to the present invention moves one leg inward and outward when using the top plate as the folding portion and when folded, thereby facilitating the close use and stacking operation of the top plate. In addition, the novel pivotal support structure of the top plate and the safety of the lock mechanism can be obtained, so that it is suitable for, for example, a folding table of the top plate.

本発明を適用した折り畳みテ−ブルの天板の使用状態を後方から見た斜視図である。It is the perspective view which looked at the use condition of the top plate of the folding table to which this invention is applied from back. 図１の正面図である。It is a front view of FIG. 図２の左側面図である。FIG. 3 is a left side view of FIG. 2. 本発明を適用した折り畳みテ−ブルの天板使用時の要部を前方下側から見た斜視図である。It is the perspective view which looked at the principal part at the time of use of the top plate of the folding table to which this invention is applied from the front lower side. 図４のＡ−Ａ線に沿う拡大断面図である。It is an expanded sectional view which follows the AA line of FIG.

図４のＢ−Ｂ線に沿う拡大断面図である。It is an expanded sectional view which follows the BB line of FIG. 図４のＣ−Ｃ線に沿う拡大断面図である。It is an expanded sectional view which follows the CC line of FIG. 本発明を適用した折り畳みテ−ブルの天板使用時の要部である、支持枠と筒状ガイド、可動筒、前脚等を分解し、これを前方下側から見た斜視図である。It is the perspective view which decomposed | disassembled the support frame, the cylindrical guide, a movable cylinder, a front leg, etc. which are the principal parts at the time of use of the top plate of the folding table to which this invention was applied, and looked at this from the front lower side. 本発明を適用した折り畳みテ−ブルの天板使用時の要部である、支持枠と可動筒、第２筒状ガイド、回動軸、前脚とスリ−ブ、連結杆等を分解して拡大し、これを前方下側から見た斜視図である。Disassemble and expand support frame and movable cylinder, second cylindrical guide, rotating shaft, front leg and sleeve, connecting rod, etc., which are the main parts when using the top plate of the folding table to which the present invention is applied It is the perspective view which looked at this from the front lower side. 本発明を適用した折り畳みテ−ブルの要部である、カムとカムピン、可動筒とスリ−ブ、連結杆等を分解し、拡大して示す斜視図である。It is a perspective view which disassembles and expands and shows a cam and a cam pin, a movable cylinder and a sleeve, a connecting rod and the like, which are the main parts of a folding table to which the present invention is applied.

本発明を適用した折り畳みテ−ブルの要部である、可動筒とガイド機構、上下側連結ブロックとボ−ルホルダ−等を分解して示す斜視図である。It is a perspective view which decomposes | disassembles and shows the movable cylinder, a guide mechanism, an up-and-down side connection block, a ball holder, etc. which are the principal parts of the folding table to which this invention is applied. 本発明を適用した折り畳みテ−ブルの天板使用時の要部を後方から見た斜視図である。It is the perspective view which looked at the principal part at the time of use of the top plate of the folding table to which this invention is applied from back. 本発明を適用した折り畳みテ−ブルの天板の折り畳み時の要部を後方から見た斜視図である。It is the perspective view which looked at the principal part at the time of folding of the top plate of the folding table to which this invention is applied from back. 本発明を適用した折り畳みテ−ブルの天板の折り畳み時の要部を拡大して示す断面図である。It is sectional drawing which expands and shows the principal part at the time of folding of the top plate of the folding table to which this invention is applied.

Explanation of symbols

１被折り畳み部（天板）
２支持枠（ブラケット）
４係合孔
４ａ係合部
５連結杆
８回動軸
９枢軸（スリ−ブ）
１０可動筒 1 Folding part (top plate)
2 Support frame (bracket)
4 engaging hole 4a engaging part 5 connecting rod 8 rotating shaft 9 pivot shaft (sleeve)
10 Movable cylinder

１１係合凸部
１４カム溝
１６ピン（カムピン）
３１ガイド機構
３１ａ第１筒状ガイド
３１ｂ第２筒状ガイド
３２，３３接合面 11 Engaging convex portion 14 Cam groove 16 Pin (cam pin)
31 Guide mechanism
31a 1st cylindrical guide 31b 2nd cylindrical guide 32,33 Joint surface

３４〜３７係合溝
４５前脚
５７後脚
６１補強ロッド
６２ロックレバ−
６４ロックリンク 34-37 engagement groove 45 front leg 57 rear leg 61 reinforcing rod 62 lock lever
64 Lock link

Claims

A folding part such as a top plate, a plurality of support frames attached to the lower surface of the folding part, a pivot of the folding part arranged on the support frame, and front and rear legs arranged below both side parts of the folding part A folding device such as a top plate provided with a movable cylinder slidably mounted on the pivot, and the movable cylinder is provided so as to be movable in the axial direction in conjunction with the rotational displacement of the folded portion; and A folding device for a top plate or the like, wherein either one of the front and rear legs is mounted on the movable cylinder so as to be movable.

A connecting rod is installed between the support frames, tubular pivots are attached to the outer surfaces of both ends of the connecting rod, the connecting rod is relatively rotatable, and the movable cylinder is disposed on the outer peripheral surface of the pivot. The folding device for a top plate or the like according to claim 1, which is slidably mounted.

2. A folding apparatus for a top plate or the like according to claim 1, wherein a pin is protruded from a lower surface of the folding portion, a cam groove is mounted or formed on a peripheral surface of the movable cylinder, and the pin is engaged with the cam groove. .

The folding device for a top plate or the like according to claim 1, wherein a rear leg is movably mounted on the movable cylinder.

The folding device for a top plate or the like according to claim 1, wherein a guide mechanism is connected to one of the front and rear legs, and the movable cylinder is slidably mounted along the guide mechanism.

The folding device for a top plate or the like according to claim 1, wherein the base portions of the pair of left and right guide mechanisms are connected by a reinforcing rod.

The folding device for a top plate or the like according to claim 1, wherein a rotation shaft is rotatably provided inside the guide mechanism, and one end of the rotation shaft is disposed on the pivot side.

The folding device for a top plate or the like according to claim 7, wherein the guide mechanism is formed by connecting two cylindrical members having a substantially semicircular cross section, and forming an engaging groove capable of accommodating the rotating shaft on a joint surface thereof.

An engaging hole having an engaging portion is formed in the support frame, and an engaging convex portion is provided on the outer peripheral surface of the movable cylinder along the axial direction so that the engaging convex portion can be engaged with the engaging hole. The folding apparatus of the top plate etc. of Claim 1 arrange | positioned.

10. A folding device for a top plate or the like according to claim 9, wherein a lock link linked to a lock lever is rotatably provided inside the support frame, and a distal end portion of the lock link is detachably disposed on the engagement convex portion. .

The folding device for a top plate or the like according to claim 9, wherein a connecting block connectable to either one of the front and rear legs is provided, an engaging portion of the connecting block is engaged with the engaging convex portion, and these are connected.

The folding device for a top plate or the like according to claim 1, wherein the folding portion is a top plate of a folding table or a seat plate of a folding chair.