JP2015202170A

JP2015202170A - frame rotation structure of bedside

Info

Publication number: JP2015202170A
Application number: JP2014082332A
Authority: JP
Inventors: 剛宏横堀; Takehiro Yokobori; 裕昭三浦; Hiroaki Miura; 雅裕高田; Masahiro Takada
Original assignee: NANSHIN CO Ltd
Current assignee: NANSHIN CO Ltd
Priority date: 2014-04-11
Filing date: 2014-04-11
Publication date: 2015-11-16
Anticipated expiration: 2034-04-11
Also published as: JP6109112B2

Abstract

PROBLEM TO BE SOLVED: To improve a rotation structure provided between a fixed frame and a movable frame of a bedside.SOLUTION: A frame rotation structure of a bedside comprises: a fixed member provided with a lower cylindrical part; a movable member having an upper cylindrical part provided above the lower cylindrical part; a pressing operation part for unlocking which is stored in the upper cylindrical part of the movable member while being biased upward, and can be pushed down; a rotary shaft part fixed to the movable member and supported pivotally inside the lower cylindrical part; and a lock member which is provided with one engaging component of engaging means formed along an inner peripheral wall at the upper part of the lower cylindrical part and engaged in a convexoconcave manner and the other engaging component of the engaging means disposed below the rotary shaft part and formed on an outer peripheral wall, slides the pair of engaging components in a freely engageable and disengageable way in conjunction with the lifting of the pressing operation part, and rotates in conjunction with the rotary shaft part.

Description

本発明は、ベッドサイドの固定フレームと可動フレームとの間に設けられる回転構造の改良に関する。 The present invention relates to an improvement in a rotation structure provided between a bedside fixed frame and a movable frame.

従来、この種の回動構造として、特開２０１２−７１１０１号公報のベッド用グリップでは、ベッドに取り付ける固定柵部の一側部に回動機構を介して水平回動自在となるようにグリップ部を連設してなるベッド用グリップにおいて、前記固定柵部の一側部下方には上面に内歯プレートを固着したシテンパイプを固着する一方、上方には取付支持プレートとロック部支持プレートを固着するに該取付支持プレートに穿設した空孔部と該ロック部支持プレートの回動軸部の軸心が前記内歯プレートの外径の軸心と同一線上に位置するよう配置し、上記グリップ部のグリップフレームを構成する支持パイプの下端部には前記内歯プレートに噛合する外歯プレートを固着するとともに、これら内歯プレートと外歯プレートを覆うカバーパイプを該支持パイプに固着し、前記支持パイプの上端を前記空孔部に挿通し、また、前記ロック部支持プレートでロックプレートに設けた回動軸部を回動自在に支持するとともにスプリングを介在させ該ロックプレートが上方回動するよう付勢させ、前記空孔部に挿通するガイドパイプ内にロック解除ボタンを挿通して、該ロック解除ボタンで前記ロックプレートの作動片を前記スプリングに抗して下方回動自在とすることにより、該ロックプレートに設けたストッパー片が前記スプリングの付勢力によってグリップ部の支持パイプの上端に接触する状態から該ストッパー片が前記支持パイプの上方摺動域から退避してグリップ部が上方に摺動自在な状態となり、前記内歯プレートと外歯プレートとの噛合が解除され、水平回動自在な状態となるよう構成してなる回動機構を具備した構成が開示されている。 Conventionally, as a rotating structure of this type, in the grip for a bed disclosed in Japanese Patent Application Laid-Open No. 2012-71101, a grip portion is provided so that it can be horizontally rotated via a rotating mechanism on one side of a fixed fence portion attached to the bed. In the bed grip, which is provided in a row, a stainless steel pipe with an internal tooth plate fixed to the upper surface is fixed below one side of the fixed fence portion, and an attachment support plate and a lock portion support plate are fixed above. The grip portion is arranged so that the hole portion formed in the mounting support plate and the shaft center of the rotation shaft portion of the lock portion support plate are located on the same line as the shaft center of the outer diameter of the internal tooth plate. An outer tooth plate that meshes with the inner tooth plate is fixed to a lower end portion of the support pipe constituting the grip frame, and a cover pipe that covers the inner tooth plate and the outer tooth plate is supported by the support pipe. Adhering to the pipe, the upper end of the support pipe is inserted into the hole portion, and the rotation shaft portion provided on the lock plate is rotatably supported by the lock portion support plate and the lock is interposed by a spring. The plate is biased to rotate upward, and a lock release button is inserted into the guide pipe that is inserted into the hole, and the lock release button rotates the operating piece of the lock plate against the spring. By making it movable, the stopper piece is retracted from the upper sliding area of the support pipe from the state in which the stopper piece provided on the lock plate contacts the upper end of the support pipe of the grip portion by the biasing force of the spring. The grip portion is slidable upward, the meshing between the inner tooth plate and the outer tooth plate is released, and the gripper is in a state of being horizontally rotatable. Configuration is disclosed provided with the rotating mechanism and comprising.

また、特開２０１１−８７８０３号公報の介助装置では、ベッドのサイドフレームに固定されて被介助者がベッドから転落するのを防止するとともに手すりとなる介助レールと、前記介助レールに水平方向回動可能に取付けられて被介助者がベッドから転落するのを防止するとともに手すりとなる介助アームと、
前記介助レールに対する前記介助アームの回動を禁止するロック機構とを備えた介助装置において、前記ロック機構は、前記介助レールに設けられるアッパ部材と、前記介助アームに設けられるとともに、前記アッパ部材の下方に前記アッパ部材に水平方向回動可能に取付けられるロア部材と、前記ロア部材と一体的に垂直方向に移動可能であるとともに前記アッパ部材を貫通するシャフト部材と、前記シャフト部材に垂直方向回動可能に取付けられるロックレバーとを備え、前記ロックレバーが回動されて前記ロア部材および前記シャフト部材が前記アッパ部材に対して垂直上方に引上げられるとともに前記アッパ部材と前記ロア部材との間に配設されたクラッチが係合されて第１ロック状態となり、前記第１ロック状態から前記ロックレバーがさらに水平方向に前記シャフト部材側に押込まれ、第２ロック状態となるロック機構を備えた構成が開示されている。 Moreover, in the assistance apparatus of Unexamined-Japanese-Patent No. 2011-87803, the assistance rail which is fixed to the side frame of a bed and prevents a person being fallen from a bed and becomes a handrail, and the assistance rail is horizontally rotated. An assisting arm which is attached in a possible manner to prevent the person being assisted from falling from the bed and which serves as a handrail;
An assistance device comprising a lock mechanism that prohibits rotation of the assistance arm with respect to the assistance rail, wherein the locking mechanism is provided on the assistance rail, on the assistance arm, and on the upper member. A lower member attached to the upper member so as to be pivotable in the horizontal direction, a shaft member that is movable integrally with the lower member in the vertical direction, and that penetrates the upper member, and a vertical rotation on the shaft member. A lock lever that is movably attached, and the lock lever is rotated so that the lower member and the shaft member are pulled vertically upward with respect to the upper member, and between the upper member and the lower member. The disposed clutch is engaged to be in the first locked state, and the lock lever is released from the first locked state. Over further horizontal to the shaft member side pushed, arrangement is disclosed having a locking mechanism comprising a second locking state.

前者では、ロック解除ボタンを押し下げロックプレートのストッパー片が支持パイプの上端から離間して作動片と支持パイプとの間に空間が形成され、この状態になると、次にグリップ部を上方に持ち上げることでロックを解除して回転させることができる。
従って、ロック解除ボタンを押しながら外部に露出している支持パイプを介してグリップ部材を持ち上げることでロックを解除し、前記支持パイプを回転させる必要があり、回転させるのに手間がかかるという問題点があった。
また、後者では、シャフト部材に枢着されたロックレバーの先端のカムの変位でアッパ部材をロア部材に接近乃至離間させてクラッチを係合乃至離脱させる構成となっており、ロックレバーのロック位置を維持した状態でロア部材に連結された介助アームを前記シャフト部材を中心に回転させるため、ロックレバーに意図しない力が加わった場合には、係合状態に戻ってしまうという問題点があった。 In the former, the lock release button is pushed down and the stopper piece of the lock plate is separated from the upper end of the support pipe to form a space between the operating piece and the support pipe. Can be unlocked and rotated.
Therefore, it is necessary to release the lock by lifting the grip member through the support pipe exposed to the outside while pressing the lock release button, and the support pipe needs to be rotated. was there.
In the latter case, the clutch is engaged or disengaged by moving the upper member closer to or away from the lower member by the displacement of the cam at the tip of the lock lever pivotally attached to the shaft member. Since the support arm connected to the lower member is rotated around the shaft member in a state in which the lock lever is maintained, when an unintended force is applied to the lock lever, the engagement state returns to the engaged state. .

特開２０１２−７１１０１号公報JP 2012-71101 A 特開２０１１−８７８０３号公報JP 2011-87803 A

この発明は上記事情に鑑みて創案されたものであって、その主たる課題は、ロック解除用の押圧操作部を押し下げると可動側のフレームの旋回規制ロックを解除して、固定側のフレーム側に回転側のフレームを一定角度回転させ、または押し続けることで任意の角度に回転させて、回転側フレームを開閉することができるベッドサイドのフレーム回動構造を提供することにある。 The present invention has been devised in view of the above circumstances, and its main problem is that when the pressing operation portion for unlocking is depressed, the turning restriction lock of the movable side frame is released and the fixed side frame side is released. An object of the present invention is to provide a bedside frame rotating structure capable of opening and closing the rotating side frame by rotating the rotating side frame by a certain angle or rotating the rotating side frame to an arbitrary angle.

本発明は、上記課題を解決するために、請求項１の発明では、
ベッドサイドの固定側フレームと回転側フレームとの間に設けられる回転構造において、
固定側フレームに設けられる筒状の固定部材と、
回転側フレームに形成されると共に、前記固定部材の上方に回転可能に設けられた筒状の可動部材と、
上端が可動部材より上方に突出すると共に、上向きに付勢されて前記可動部材の中空内に挿入されるロック解除用の押圧操作部と、
前記可動部材に固定されると共に固定部材の中空内に挿入されて、固定部材に旋回可能に軸受された回転軸部と、
該回転軸部の回転に連動して回転すると共に、前記押圧操作部の昇降に連動して昇降するロック部材とを有し、
該ロック部材の外周壁の上部と、前記固定部材の内周壁の上部でロック部材が上昇した際に凹凸係合して可動部材の旋回を規制する一対の第１係合構成部が設けられ、
該ロック部材の外周壁の下部と、前記固定部材の内周壁の下部でロック部材が下降した際に凹凸係合してロック部材の旋回規制解除位置を保持する一対の第２係合構成部が設けられていることを特徴とする。
請求項２の発明では、
前記押圧操作部とロック部材の間に押圧部材の昇降をロック部材に連動させる作動部材を設けており、該作動部材は回転軸部内を貫通し上下に摺動しうることを特徴とする。
請求項３の発明では、
前記ロック部材が回転軸部に外嵌しており、ロック部材の内周面と回転軸部の外周面に、上下に延びる突条と凹溝とにより凹凸係合して、回転方向に連動する一対の凹凸構成部をそれぞれに設けてなることを特徴とする。
請求項４の発明では、
前記ロック部材に形成される第１係合構成部の一方が、ロック部材の外周壁に形成された内歯状の凹凸部からなっており、
固定部材に形成される第１係合構成部の他方が、前記内歯状の凹凸部に係合させる外歯状の凹凸部からなっていることを特徴とする。
請求項５の発明では、
前記ロック部材に形成される第１係合構成部の一方が、ロック部材の外周壁で開口する横穴に嵌合して外向きに付勢された係合突部からなり、
固定部材に形成される第１係合構成部の他方が、前記係合突部を係合させる係合受部からなっており、
該係合受部は、固定部材の軸線を中心にした周方向で可動部材の所定の回転角度に対応する位置に配置されていることを特徴とする。
請求項６の発明では、
前記ロック部材に形成される第２係合構成部の一方が、ロック部材の外周壁で開口する横穴に嵌合して外向きに付勢された係合突部からなり、
固定部材に形成される第２係合構成部の他方が、前記係合突部を係合させる係合受部からなっており、
該係合受部は、固定部材の軸線を中心にした周方向で可動部材の所定の回転角度に対応する位置に配置されていることを特徴とする。
請求項７の発明では、
前記第２係合構成部の係合受部が、固定部材の内周面に固着された筒状体のロックガイドに形成されて係合突部を掛止める孔部または長孔部からなっていることを特徴とする。 In order to solve the above-mentioned problems, the present invention provides
In the rotating structure provided between the bedside fixed side frame and the rotating side frame,
A cylindrical fixing member provided on the fixed side frame;
A cylindrical movable member formed on the rotation side frame and rotatably provided above the fixed member;
A pressing operation portion for unlocking the upper end protruding upward from the movable member and biased upward and inserted into the hollow of the movable member;
A rotating shaft portion fixed to the movable member and inserted into a hollow of the fixed member, and rotatably supported by the fixed member;
A lock member that rotates in conjunction with the rotation of the rotary shaft portion and that moves up and down in conjunction with the elevation of the pressing operation portion;
A pair of first engagement components for engaging the concave and convex portions when the lock member is raised at the upper part of the outer peripheral wall of the lock member and the upper part of the inner peripheral wall of the fixed member to restrict the turning of the movable member;
A pair of second engagement components that engage with the concave and convex portions when the lock member descends at the lower portion of the outer peripheral wall of the lock member and the lower portion of the inner peripheral wall of the fixing member to hold the rotation restriction release position of the lock member. It is provided.
In the invention of claim 2,
An actuating member is provided between the pressing operation portion and the lock member to interlock the raising and lowering of the press member with the lock member, and the actuating member can pass through the rotary shaft portion and slide up and down.
In the invention of claim 3,
The lock member is externally fitted to the rotating shaft portion, and is engaged with the inner peripheral surface of the lock member and the outer peripheral surface of the rotating shaft portion by protrusions and recesses extending vertically to interlock with the rotation direction. It is characterized by providing a pair of uneven | corrugated structure part to each.
In the invention of claim 4,
One of the first engagement components formed on the lock member is composed of an internal tooth-shaped uneven portion formed on the outer peripheral wall of the lock member,
The other of the first engaging components formed on the fixing member is formed by an external tooth-shaped uneven portion that engages with the internal tooth-shaped uneven portion.
In the invention of claim 5,
One of the first engagement components formed on the lock member is an engagement protrusion that is fitted in a lateral hole that opens at the outer peripheral wall of the lock member and is biased outward.
The other of the first engagement components formed on the fixing member is an engagement receiving portion that engages the engagement protrusion,
The engagement receiving portion is arranged at a position corresponding to a predetermined rotation angle of the movable member in a circumferential direction around the axis of the fixed member.
In the invention of claim 6,
One of the second engagement components formed on the lock member is composed of an engagement protrusion that is fitted in a lateral hole that opens at the outer peripheral wall of the lock member and is biased outward.
The other of the second engagement components formed on the fixing member is an engagement receiving portion that engages the engagement protrusion,
The engagement receiving portion is arranged at a position corresponding to a predetermined rotation angle of the movable member in a circumferential direction around the axis of the fixed member.
In the invention of claim 7,
The engagement receiving portion of the second engagement component portion is formed of a hole portion or a long hole portion that is formed on a lock guide of a cylindrical body fixed to the inner peripheral surface of the fixing member and latches the engagement protrusion. It is characterized by being.

本発明のベッドサイドのフレーム回転構造では、ロック解除用の押圧操作部を押し下げると、作動部材を介してロック部材を押し下げて一対の第１係合構成部の係合を解除し、該第１係合構成部の係合を解除した位置で第２係合構成部が係合して、第１係合構成部の解除姿勢を維持するので、可動部材を回転可能とする。
可動部材の回転で、一対の第２係合構成部の係合が解除されると共に、可押圧操作部を押し下げる力がかからなくなると押圧操作部が付勢力で上昇し、一対の第１係合構成部が係合し、該係合位置で可動部材を固定部材に拘束する。
これにより、押圧操作部を押し下げて可動部材の固定部材に対する旋回規制ロックを解除し、回転側フレームを回転させることができ、また押圧操作部を押し続けることで回転側フレームを任意の角度に回転させて、回転側フレームを開閉することができる。 In the bedside frame rotation structure of the present invention, when the pressing operation portion for unlocking is pushed down, the locking member is pushed down via the actuating member to release the engagement of the pair of first engaging components. Since the second engagement component is engaged at the position where the engagement component is disengaged and the released posture of the first engagement component is maintained, the movable member can be rotated.
When the engagement of the pair of second engagement components is released by the rotation of the movable member, and the force to push down the pressable operation portion is no longer applied, the press operation portion is raised by the biasing force, and the pair of first engagement members The combined component is engaged, and the movable member is restrained to the fixed member at the engagement position.
As a result, it is possible to release the turning restriction lock for the fixed member of the movable member by depressing the pressing operation unit, and to rotate the rotation side frame, and to rotate the rotation side frame to an arbitrary angle by continuing to press the pressing operation unit. Thus, the rotation side frame can be opened and closed.

ベッドサイドのフレーム回動構造の側面図である。It is a side view of a bed side frame rotation structure. 回転側フレームを固定側フレームと直線に並ぶ閉位置から内側または外側に段階的に回転させる場合を示す平面図である。It is a top view which shows the case where a rotation side frame is rotated in steps from the closed position lined up with a fixed side frame inward or outward. 図１の断面図である。It is sectional drawing of FIG. （ａ）は回転構造の上部のロック時の要部断面図、（ｂ）は同回転構造の下部の要部断面図である。(A) is principal part sectional drawing at the time of locking of the upper part of a rotation structure, (b) is principal part sectional drawing of the lower part of the rotation structure. （ａ）は回転構造の上部のロック解除時の要部断面図、（ｂ）は同回転構造の下部の要部断面図である。(A) is principal part sectional drawing at the time of lock release of the upper part of a rotation structure, (b) is principal part sectional drawing of the lower part of the rotation structure. 作動部材を有する押圧操作部の斜視図である。It is a perspective view of the press operation part which has an operation member. 可動部材の斜視図である。It is a perspective view of a movable member. 固定部材の斜視図である。It is a perspective view of a fixing member. 固定部材の断面図である。It is sectional drawing of a fixing member. 固定部材の平面図である。It is a top view of a fixing member. 回転軸部の斜視図である。It is a perspective view of a rotating shaft part. ロック部材の斜視図である。It is a perspective view of a locking member. ロック部材の断面図である。It is sectional drawing of a locking member. （ａ）は筒状体の正面側から見た斜視図、（ｂ）は背面側から見た斜視図である。(A) is the perspective view seen from the front side of the cylindrical body, (b) is the perspective view seen from the back side. （ａ）は筒状体の正面図、（ｂ）は側面図である。(A) is a front view of a cylindrical body, (b) is a side view. （ａ）は図１５（ａ）のａ−ａ線断面図、（ｂ）は同ｂ−ｂ線断面図である。(A) is the sectional view on the aa line of Fig.15 (a), (b) is the sectional view on the bb line. 一対の第１係合構成部の異なる形状を示す断面図である。It is sectional drawing which shows the shape from which a pair of 1st engagement structure part differs.

以下に、この発明のベッドサイドのフレーム回動構造の好適実施例について図面を参照しながら説明する。 A preferred embodiment of the bedside frame turning structure of the present invention will be described below with reference to the drawings.

図１〜３に示すフレーム回転構造１０は、図１から３に示すように、ベッドのサイドの柵となるサイドフレームに形成される回転側フレーム１１を閉位置で同一線状に並ぶ固定側フレーム１に対して回転させて開位置に変位させるための回転構造からなっている。
固定側フレーム１は、その先端に略筒状の固定部材２が連結されており、回転側フレーム１１は、その先端に略筒状の可動部材１２が連結されている。 1 to 3, the frame rotating structure 10 shown in FIGS. 1 to 3 is a fixed side frame in which rotating side frames 11 formed on a side frame serving as a fence on the side of a bed are arranged in the same line at a closed position. It consists of a rotating structure for rotating with respect to 1 and displacing it to the open position.
The fixed side frame 1 has a substantially cylindrical fixing member 2 connected to the tip thereof, and the rotation side frame 11 has a substantially cylindrical movable member 12 connected to the tip thereof.

［可動部材］
可動部材１２は、図２〜４、及び図７に示すように、中央に上下に貫通する中空部を有する上方筒部１３を有しており、上記可動部材１２は連結軸部１２ａを介して回転側フレーム１１と固着されている。
また、可動部材１２は、図４に明瞭なように、上方筒部１３の中途箇所に中央に貫通する孔１７ａを有する仕切壁１３ｂを有しており、該仕切壁１３ｂを介して上面が開口する上方空間部１３ａと下面が開口する下方空間部１３ｃとに分けられ、前記仕切壁１３ｂの貫通する孔１７ａによって上下に貫通するように形成されている。 [Movable member]
As shown in FIGS. 2 to 4 and 7, the movable member 12 has an upper cylindrical portion 13 having a hollow portion penetrating vertically in the center, and the movable member 12 is connected via a connecting shaft portion 12 a. The rotation side frame 11 is fixed.
Moreover, the movable member 12 has the partition wall 13b which has the hole 17a penetrated in the center in the middle part of the upper cylinder part 13 so that FIG. 4 may become clear, and an upper surface is opened through this partition wall 13b. The upper space portion 13a is divided into a lower space portion 13c whose lower surface is open, and is formed so as to penetrate vertically by a hole 17a that penetrates the partition wall 13b.

前記孔１7ａは、後述の作動部材１７を貫挿しうる大きさに設定されている。
前記上方空間部１３ａには、ロック解除用の押圧操作部１５の下部が昇降自在に嵌合されている。
なお、図７に示す符号Ｇは、押圧操作部１５の突条部１５ｃを垂直に昇降させるためのガイド溝である。 The hole 17a is set to a size that allows an operating member 17 described later to be inserted therethrough.
A lower part of the unlocking pressing operation part 15 is fitted to the upper space part 13a so as to be movable up and down.
In addition, the code | symbol G shown in FIG. 7 is a guide groove for raising / lowering the protrusion part 15c of the press operation part 15 perpendicularly | vertically.

［押圧操作部］
押圧操作部１５は、図４、図６に示すように、上端を押圧操作部１５に固着して下方に延びる杆状の作動部材１７を軸線に沿って突出させている。
この押圧操作部１５は、その上面を手のひらなどで押しやすい形状にしたり、滑りにくい形状とすることが好ましい。 [Pressing operation section]
As shown in FIGS. 4 and 6, the pressing operation unit 15 has a hook-shaped operation member 17 that protrudes along the axis extending in a downward direction with its upper end fixed to the pressing operation unit 15.
It is preferable that the pressing operation portion 15 has an upper surface that is easily pressed with a palm or the like, or has a shape that is difficult to slip.

上記押圧操作部１５は、前記上方空間部１３ａ内で昇降しうるように仕切壁１３ｂより上方に離間させて配置されている。
また前記作動部材１７は前記仕切壁１３ｂの孔１７ａを嵌挿して固定部材２の中空側に延出している。
押圧操作部１５は、その底面側で開口する環状溝１５ｂを有している。
該環状溝１５ｂには、前記仕切壁１３ｂに下端を掛止め、作動部材１７に外嵌したコイルスプリング５の上部が嵌め込まれており、押圧操作部１５が上向きに付勢されている。 The pressing operation part 15 is arranged so as to be spaced above the partition wall 13b so that it can be moved up and down in the upper space part 13a.
The actuating member 17 is inserted into the hole 17a of the partition wall 13b and extends to the hollow side of the fixing member 2.
The pressing operation unit 15 has an annular groove 15b that opens on the bottom surface side.
In the annular groove 15b, the lower end of the partition wall 13b is hooked and the upper part of the coil spring 5 fitted on the operating member 17 is fitted, and the pressing operation portion 15 is urged upward.

[回転軸部]
次に、回転軸部１６は、図１１に示すように、大径に形成された上方軸部１６ａと、段差を介してやや小径に設定された中間軸部１６ｂと、該中間軸部１６ｂと同一ないしやや小径に形成された下方軸部１６ｃとからなっており、中央の軸線に沿って貫通孔１６ｄを穿設している。
そして、回転軸部１６の上方軸部１６ａが、前記下方空間部１３ｃに収納されて可動部材１２と一体に回転するように固定または拘束される。
例えば、前記下方空間部１３ｃと上方軸部１６ａとは、横断面多角形状（図示せず）に形成して嵌合することで回転方向に拘束しうる。 [Rotating shaft]
Next, as shown in FIG. 11, the rotating shaft portion 16 includes an upper shaft portion 16 a formed to have a large diameter, an intermediate shaft portion 16 b set to a slightly small diameter through a step, and the intermediate shaft portion 16 b It consists of a lower shaft portion 16c having the same or slightly smaller diameter, and a through hole 16d is formed along the central axis.
The upper shaft portion 16a of the rotating shaft portion 16 is fixed or restrained so as to be housed in the lower space portion 13c and rotate integrally with the movable member 12.
For example, the lower space portion 13c and the upper shaft portion 16a can be constrained in the rotational direction by forming and fitting in a polygonal cross section (not shown).

また、下方軸部１６ｃには、後述のロック部材１８の貫通孔２０と係合する一方の連動構成部６が形成されており、前記貫通孔２０の内周面には他方の連動構成部７が形成されており、貫通孔２０に下方軸部１６Ｃが挿入されることで上記一対の連動構成部６、７が係合して、ロック部材１８が回転軸部１６の回転と連動する。
本実施例で一対の連動構成部６、７は、上下に延びる突条と凹溝の組み合わせた断面略星形の凹部と突部からなっているが、上下に昇降可能で回転方向に連動しうる形状であれば公知の連動構成を用いることができる。 In addition, one interlocking component 6 that engages with a through hole 20 of a lock member 18 described later is formed in the lower shaft portion 16 c, and the other interlocking component 7 is formed on the inner peripheral surface of the through hole 20. When the lower shaft portion 16 </ b> C is inserted into the through hole 20, the pair of interlocking components 6 and 7 are engaged, and the lock member 18 is interlocked with the rotation of the rotating shaft portion 16.
In the present embodiment, the pair of interlocking components 6 and 7 are composed of a concave portion and a protruding portion having a substantially star-shaped cross section in which a vertically extending protrusion and a concave groove are combined, but can be moved up and down and interlocked with the rotation direction. Any known interlocking configuration can be used as long as the shape is satisfactory.

［固定部材］
固定部材２は、図３および図８〜１０に明瞭なように、下方筒部３から一方に延びて固定側フレーム１に固着される連結軸部２ａを有している。
下方筒部３は、図４および図９に示すように、上下が貫通する筒状からなっており、上部に上方筒部１３の底部に形成された環状突部１３ｄを旋回可能に嵌合する段付き受部３ａと、前記回転軸部１６とこれを旋回可能に軸受けする軸受部Ｂ１，Ｂ２とを収納する第１収納部３ｂと、該第１収納部３ｂの下方で小径となる中継部３ｃと、ロック部材１８を収納する大径の第２収納室３ｄとを連接している（図９参照）。 [Fixing member]
As clearly shown in FIGS. 3 and 8 to 10, the fixing member 2 has a connecting shaft portion 2 a that extends from the lower cylinder portion 3 to one side and is fixed to the fixed-side frame 1.
As shown in FIG. 4 and FIG. 9, the lower cylindrical portion 3 has a cylindrical shape penetrating vertically, and an annular protrusion 13 d formed at the bottom of the upper cylindrical portion 13 is fitted to the upper portion so as to be able to turn. A step receiving portion 3a, a first storage portion 3b that stores the rotating shaft portion 16 and bearing portions B1 and B2 that rotatably support the rotation shaft portion 16, and a relay portion that has a small diameter below the first storage portion 3b. 3c is connected to a large-diameter second storage chamber 3d that stores the lock member 18 (see FIG. 9).

中継部３ｃと第２収納室３ｄとの間には段部が形成されているので、第２収納室３ｄに収納されるロック部材１８が上記段部に衝合することでそれより上方へは移動しないようになっている。 Since a step portion is formed between the relay portion 3c and the second storage chamber 3d, the lock member 18 stored in the second storage chamber 3d abuts on the step portion so that the upper portion thereof is moved upward. It does not move.

この第２収納室３ｄの内周壁の上部とロック部材１８の外周壁の上部には、ロック部材１８が上昇した際に凹凸係合して可動部材の旋回を規制する一対の第１係合構成部４、１４がそれぞれ環状に設けられている。
この一対の第１係合構成部４、１４は、本実施例では、上下に延びる歯車状の突部と該突部を係合する溝状の受部の組み合わせからなっており、図示例では第２収納室３ｄの内周壁の上部に溝状の受部を環状に設けて内歯状に形成した一方の第１係合構成部４（図９〜１０参照）と、後述のロック部材１８の外周壁の上部で前記一方の第１係合構成部４と対応するように前記受部に係合する突部を環状に設けて外歯状に形成した他方の第１係合構成部１４（図１２参照）とからなっている。
そして、前記一対の第１係合構成部４、１４が係合すると可動部材１２の回転規制がロックされ、ロック部材１８が下降して一対の第１係合構成部４、１４の係合が離脱してロックが解除されると、ロック部材１８を介して可動部材１２が回転しうる。 A pair of first engagement structures for engaging the concave and convex portions when the lock member 18 is raised to restrict the turning of the movable member on the upper part of the inner peripheral wall of the second storage chamber 3d and the upper part of the outer peripheral wall of the lock member 18 The parts 4 and 14 are each provided in a ring shape.
In the present embodiment, the pair of first engaging components 4 and 14 is composed of a combination of a gear-like protrusion that extends vertically and a groove-shaped receiving part that engages the protrusion. One first engaging component 4 (see FIGS. 9 to 10) formed in an inner tooth shape by providing a groove-like receiving portion in the upper part of the inner peripheral wall of the second storage chamber 3d, and a lock member 18 described later. The other first engaging component 14 is formed in an outer tooth shape by providing a projecting portion that engages with the receiving portion so as to correspond to the one first engaging component 4 at the upper part of the outer peripheral wall of the first outer engaging wall 14. (See FIG. 12).
When the pair of first engagement components 4 and 14 are engaged, the rotation restriction of the movable member 12 is locked, and the lock member 18 is lowered to engage the pair of first engagement components 4 and 14. When the lock is released by releasing, the movable member 12 can rotate via the lock member 18.

固定部材２の受部３ａと第１収納部３ｂとの間には段差が生じているので、前記環状突部１３ｄの下端が掛け止められて位置決めされる。
そして、第１収納部３ｂには、回転軸部１６の中間軸部１６ｂが収納され、第１収納部３ｂの内周壁と中間軸部１６ｂの外周壁との間にスラストベアリングからなる軸受部Ｂ１、Ｂ２が、図示例では上下２段に離間して配置されている。
これにより、固定された下部筒部３に対して前記回転軸部１６を回転させることができる。 Since there is a step between the receiving portion 3a of the fixing member 2 and the first storage portion 3b, the lower end of the annular protrusion 13d is latched and positioned.
The first storage portion 3b stores the intermediate shaft portion 16b of the rotary shaft portion 16, and a bearing portion B1 formed of a thrust bearing between the inner peripheral wall of the first storage portion 3b and the outer peripheral wall of the intermediate shaft portion 16b. , B2 are spaced apart in two upper and lower stages in the illustrated example.
Thereby, the said rotating shaft part 16 can be rotated with respect to the fixed lower cylinder part 3. As shown in FIG.

［ロック部材］
次に、中継部３ｃを介して下方に配置された第２収納室３ｄには、回転軸部１６の下部と回転方向に連動可能に係合するように外嵌された略円筒状のロック部材１８が収納されている。
即ち、ロック部材１８は、図１２〜１３に示すように、旋回ロック用の第１係合構成部の一例として上下に延びる凹溝を等間隔に環状に形成した外歯状の一方の第１係合構成部１４が外周壁の上部に沿って形成されている。
上記一方の第１係合構成部１４は前記他方の第１係合構成部４に対して、回転軸部１６およびロック部材１８の軸線を中心にして旋回方向にロックし、上下方向（本実施例では下方向）には摺動して係合を離脱しうる。 [Lock member]
Next, a substantially cylindrical lock member that is externally fitted to the second storage chamber 3d disposed below via the relay portion 3c so as to be able to engage with the lower portion of the rotary shaft portion 16 in a rotational direction. 18 is stored.
That is, as shown in FIGS. 12 to 13, the locking member 18 is one of the first external teeth having an annular groove formed at equal intervals in the vertical direction as an example of the first engaging component for the rotation lock. An engagement component 14 is formed along the top of the outer peripheral wall.
The one first engaging component 14 is locked in the turning direction around the axis of the rotary shaft 16 and the lock member 18 with respect to the other first engaging component 4, and the vertical direction (this embodiment) In the example, it can slide in the downward direction) to disengage the engagement.

次に、ロック部材１８の中央に軸線に沿って貫通孔２０が形成されており、該貫通孔２０の上方中空部２０ａには前記下方軸部１６ｃの一方の構成部、図示例では歯車状の突部６に対応して、回転軸部１６の軸線を中心とした周方向に噛合する凹溝（内歯状の溝）からなる他方の構成部７が設けられている（図１３参照）。
該上方中空部２０ａの下方には、同一軸線上に小径の中間中空部２０ｂが形成されており、上方中空部２０ａの底面段部に回転軸部１６の下端を載置し、中間中空部２０ｂに前記作動部材１７の下部を挿入することができるようになっている。
前記中間中空部２０ｂの下方にはロック部材１８の底面の開口と連通する固定部材Ｋ用の挿入穴部２０ｃが連設されている。 Next, a through-hole 20 is formed in the center of the lock member 18 along the axis. The upper hollow portion 20a of the through-hole 20 has one component of the lower shaft portion 16c, which is a gear-like shape in the illustrated example. Corresponding to the protrusion 6, the other component 7 is provided which is formed of a concave groove (inner tooth groove) that meshes in the circumferential direction around the axis of the rotary shaft portion 16 (see FIG. 13).
A small-diameter intermediate hollow portion 20b is formed on the same axis below the upper hollow portion 20a, and the lower end of the rotary shaft portion 16 is placed on the bottom step portion of the upper hollow portion 20a. The lower part of the actuating member 17 can be inserted.
An insertion hole 20c for the fixing member K communicating with the opening on the bottom surface of the lock member 18 is provided below the intermediate hollow portion 20b.

該挿入穴部２０ｃは、前記中間中空部２０ｂに嵌合した作動部材１７の下端側をロック部材１８にネジ止めして固定するためのもので、図５に示すように、ロック部材１８の底面から挿入穴部２０ｃに挿入された固定部材Ｋの一例としてのネジを作動部材１７の底面側からねじ止めして固着している。
これによりロック部材１８は、作動部材１７を介して押圧操作部１５の昇降と連動して昇降するようになっている。 The insertion hole 20c is for fixing the lower end side of the actuating member 17 fitted in the intermediate hollow portion 20b to the lock member 18 by screwing, as shown in FIG. A screw as an example of the fixing member K inserted into the insertion hole 20c from the bottom is fixed by screwing from the bottom surface side of the operating member 17.
Accordingly, the lock member 18 is moved up and down in conjunction with the lifting and lowering of the pressing operation unit 15 via the operating member 17.

また、ロック部材１８の他方の連動構成部７は、回転軸部１６の下部に形成された一方の連動構成部６と凹凸係合して、回転軸部１６の軸線を中心にした回転方向にロック部材１８と連動して回転することができる。
上記一対の連動構成部６、７は、上下に伸びる突条と凹溝の組み合わせからなっているので、ロック部材１８が前記作動部材１７により回転軸部１６に対して上下に変位しても前記係合は解除されずに、連動して回転することができる。 In addition, the other interlocking component 7 of the lock member 18 engages with one interlocking component 6 formed at the lower portion of the rotating shaft portion 16 so as to rotate in the rotational direction around the axis of the rotating shaft portion 16. It can rotate in conjunction with the lock member 18.
Since the pair of interlocking components 6 and 7 are composed of a combination of a vertically extending protrusion and a concave groove, even if the lock member 18 is displaced up and down with respect to the rotary shaft portion 16 by the operating member 17, The engagement can be rotated in conjunction without being released.

また、ロック部材１８の上方中空部２０ａより下方の外周壁には、貫通孔２０に向かって延びる盲孔からなる収納孔１９が複数（図示例では直径方向に一対）形成されている（図１３参照）。
該収納孔１９には、横向きのスプリング２６が収納され、該スプリング２６の先端（外端）に球体状の係合突部２５が設けられたプランジャ型からなっており、該係合突部２５はスプリング２６により径方向で外向きに付勢された状態で収納孔１９から出没自在に収納されており、第２係合構成部の一方となっている（図５参照）。 Further, a plurality of storage holes 19 (a pair in the diametrical direction in the illustrated example) are formed in the outer peripheral wall below the upper hollow portion 20a of the lock member 18 (see FIG. 13). reference).
The storage hole 19 is a plunger type in which a lateral spring 26 is stored, and a spherical engagement projection 25 is provided at the tip (outer end) of the spring 26. Is housed in a retractable manner through the housing hole 19 in a state of being urged outward in the radial direction by the spring 26, and is one of the second engaging components (see FIG. 5).

［ロックガイド］
また、下方筒部３の第２収納室３ｄの内周壁の下部には、下端が固定リング２８で固定されて内周面に沿って配置された筒状からなるロックガイド３０が設けられており、該ロックガイド３０には前記第２係合構成部の他方となる係合受部３１が形成されている（図５参照）。
即ち、上記ロックガイド３０には、前記係合突部２５が離脱可能に係合する穴からなる複数の係合受部３１が形成されている。 [Lock guide]
Further, a lower part of the inner peripheral wall of the second storage chamber 3d of the lower cylindrical portion 3 is provided with a cylindrical lock guide 30 having a lower end fixed by a fixing ring 28 and disposed along the inner peripheral surface. The lock guide 30 is formed with an engagement receiving portion 31 which is the other of the second engagement components (see FIG. 5).
In other words, the lock guide 30 is formed with a plurality of engagement receiving portions 31 formed of holes through which the engagement protrusions 25 are detachably engaged.

該係合受部３１は、回転軸部１６の軸線を中心にしたロックガイド３０の周方向で所定の回転角度（本実施例では０度から１３５度まで２２．５度間隔）に対応するように複数配置している。
上記係合受部３１が配置される回転角度は、同じピッチでも異なるピッチでもよく、また複数設けて段階的に可動部材を開閉するものでも、開位置から１回の回転で閉位置となるように設定してもよい。
また、上記係合受部３１は、一定間隔に配置した円形状の孔部だけでもよいが、図示例の場合は、図１５、１６に示すように、単なる円形状の孔部３１ｄ〜ｆと、長孔部３４（３４’）との組み合わせた構成からなっている。
長孔部３４（３４’）は、下段の長孔３２の左右で上下に連通する一対の上段の長孔３３Ａ、３３Ｂを設けている。 The engagement receiving portion 31 corresponds to a predetermined rotation angle in the circumferential direction of the lock guide 30 around the axis of the rotation shaft portion 16 (in this embodiment, an interval of 22.5 degrees from 0 degrees to 135 degrees). There are several.
The rotation angle at which the engagement receiving portion 31 is arranged may be the same pitch or different pitches, and even if a plurality of rotation angles are provided to open and close the movable member stepwise, the rotation position is changed to the closed position by one rotation from the open position. May be set.
Further, the engagement receiving portion 31 may be only circular hole portions arranged at regular intervals, but in the illustrated example, as shown in FIGS. 15 and 16, simple circular hole portions 31d to 31f are used. , And a combination with a long hole portion 34 (34 ').
The long hole portion 34 (34 ′) is provided with a pair of upper long holes 33 </ b> A and 33 </ b> B that communicate vertically with the left and right of the lower long hole 32.

長孔部３４は、下段の長孔３２が下辺を略水平な縁部とし、上段の長孔３３Ａ、３３Ｂが上辺を略水平な縁部としており、上段の長孔３３Ａ、３３Ｂと連通していない下段の長孔３２の左右両端が円弧状の縁部となり、その下段の長孔３２の中央の上縁が円弧状となって基準点となり、該上縁はいったん下方へ窪んでから上段の長孔３３Ａ、３３Ｂに連設されている。
図示例では、上記係合受部３１（３１ｄ〜ｆと３４）は、ロックガイド３０の周壁に沿って、１８０度ずらして左右が対称となるように一対に配置されている（図１５（ａ）（ｂ）参照）。 In the long hole portion 34, the lower long hole 32 has a lower side as a substantially horizontal edge, and the upper long holes 33A and 33B have a substantially horizontal edge as an upper side, and communicate with the upper long holes 33A and 33B. The left and right ends of the lower long hole 32 are arc-shaped edges, and the upper edge of the center of the lower long hole 32 is arc-shaped to serve as a reference point. It is connected to the long holes 33A and 33B.
In the illustrated example, the engagement receiving portions 31 (31d to f and 34) are arranged in a pair along the peripheral wall of the lock guide 30 so as to be shifted 180 degrees and symmetrical to each other (FIG. 15A). ) (B)).

図１６は、説明の便宜上、ロックガイド３０におけるロック角度を一定のピッチ（本実施例では２２．５度）毎に放射線で示したもので、同図（ａ）は下段の長孔３２に沿ったロックガイド３０のａ−ａ線断面図、同図（ｂ）は上段の長孔３３Ａ、３３Ｂに沿ったロックガイド３０のｂ−ｂ線断面図である（図１５（ａ）参照）。
そして、下段の長孔３２は、ロック部材１８が下端まで押し下げられた際の係合突部２５の位置と整合する位置に設定されている。 FIG. 16 shows the lock angle in the lock guide 30 by radiation at a constant pitch (22.5 degrees in the present embodiment) for convenience of explanation, and FIG. 16A is along the lower slot 32. FIG. 15B is a cross-sectional view of the lock guide 30 taken along the line aa, and FIG. 15B is a cross-sectional view of the lock guide 30 taken along the line bb along the upper slots 33A and 33B (see FIG. 15A).
The lower elongated hole 32 is set to a position that matches the position of the engaging protrusion 25 when the lock member 18 is pushed down to the lower end.

本実施例では、可動部材１２は、固定部材２と同一線上に配置される０度を中心にして、＋方向（外向き）に２２．５度間隔で６段階（０〜＋１３５度）回転し、−方向に６段階（０〜−１３５度）回転するようになっている（図２参照）。
図２で実線で示す可動部材１２の位置を０度（閉じた位置）とする閉位置ロックの場合、押圧操作部１５はスプリング５で押し下げられており、作動部材１７を介してロック部材１８も上昇しており、一方の旋回ロック構成部４と他方の旋回ロック構成部１４とが係合して、可動部材１２の回転がロックされる。 In this embodiment, the movable member 12 rotates in six steps (0 to +135 degrees) at intervals of 22.5 degrees in the + direction (outward) around 0 degrees arranged on the same line as the fixed member 2. , And 6 directions (0 to -135 degrees) in the-direction (see FIG. 2).
In the case of the closed position lock in which the position of the movable member 12 indicated by the solid line in FIG. 2 is 0 degree (closed position), the pressing operation unit 15 is pushed down by the spring 5, and the lock member 18 is also connected via the operating member 17. Ascending, the one turning lock component 4 and the other turning lock component 14 are engaged, and the rotation of the movable member 12 is locked.

上記ロック時に、係合突部２５はロックガイド３０の上部の内側にあり、ロックガイド３０の長孔部３４の下段の長孔３２の中央位置３１ａの真上となっている（図５（ａ）参照）。
そして、押圧操作部１５を押し下げるとロック部材１８が下降し、係合突部２５が前記下段の長孔３２の中央位置３１ａに嵌合する。
これにより係合突部２５は下段の長孔３２の上縁に掛け止められてロック部材１８の上昇を規制し、前記他方の旋回ロック構成部１４を一方の旋回ロック構成部４から離間した下方位置に保持して前記係合を解除する。
この状態で可動部材１２は、ベッドの内側（−方向）またはベッドの外側（＋方向）に回転することができる。 At the time of the locking, the engaging protrusion 25 is inside the upper portion of the lock guide 30 and is directly above the center position 31a of the lower hole 32 of the lower hole 34 of the lock guide 30 (FIG. 5A). )reference).
When the pressing operation portion 15 is pushed down, the lock member 18 is lowered, and the engaging projection 25 is fitted into the central position 31a of the lower elongated hole 32.
As a result, the engagement protrusion 25 is hooked on the upper edge of the lower elongated hole 32 to prevent the lock member 18 from rising, and the other turning lock component 14 is separated from the one turning lock component 4. Hold in position to release the engagement.
In this state, the movable member 12 can rotate inside the bed (− direction) or outside the bed (+ direction).

そこで、可動部材１２を回転させる場合、本実施例では２２．５度間隔に回転するが、一番最初の２２．５度の回転では＋方向でも−方向でも開度が狭すぎるので、第１係合構成部４、１４が係合しないようになっている。
即ち、可動部材１２を回転させていくと、係合突部２５は下段の長孔３２の上縁に沿って移動し押し下げられながらこれを乗り越えて、下段の長孔３２と連接する上段の長孔３３Ａ（３３Ｂ）の縁部３１ｂに掛止められる。
上段の長孔３３Ａ（３３Ｂ）の縁部３１ｂに係合突部２５が掛け止められても、この上昇の長さは僅かであるので、前記他方の旋回ロック構成部１４は未だ一方の旋回ロック構成部４から離間した下方位置にあり、前記係合は解除されたままである。
この時の角度が２２．５度であり、クリック感を与えながらロックがかからないようになっている。 Therefore, when the movable member 12 is rotated, it is rotated at an interval of 22.5 degrees in the present embodiment, but the opening degree is too narrow in both the + direction and the − direction in the first rotation of 22.5 degrees. The engagement components 4 and 14 are not engaged.
That is, when the movable member 12 is rotated, the engagement protrusion 25 moves along the upper edge of the lower long hole 32 and is pushed down to get over the upper protrusion 32 connected to the lower long hole 32. It is hooked on the edge 31b of the hole 33A (33B).
Even if the engagement protrusion 25 is hooked on the edge 31b of the upper long hole 33A (33B), the length of the rise is slight, so that the other turning lock component 14 is still one turning lock. In the lower position away from the component 4, the engagement remains disengaged.
The angle at this time is 22.5 degrees, and the lock is not applied while giving a click feeling.

そこから、可動部材１２を更に回転させると、係合突部２５は上段の長孔３３Ａ（３３Ｂ）の上縁に沿って移動し、その端部に衝合する。
この上段の長孔３３Ａ（３３Ｂ）の端部３１ｃは乗り越えることができないため、係合突部２５は内側に引っ込んで長孔部から外れロックガイド３０の内壁面に接する。
これにより、前記スプリング５の付勢力でロック部材１８が上昇し、他方の第１係合構成部１４が一方の第１係合構成部４と整合して係合され、可動部材１２の回転がロックされる。この位置が４５度の位置となるように設定される。 Then, when the movable member 12 is further rotated, the engaging protrusion 25 moves along the upper edge of the upper elongated hole 33A (33B) and abuts on the end thereof.
Since the end 31c of the upper long hole 33A (33B) cannot get over, the engagement protrusion 25 is retracted inward and comes out of the long hole and comes into contact with the inner wall surface of the lock guide 30.
As a result, the lock member 18 is raised by the biasing force of the spring 5, the other first engagement component 14 is engaged with the first engagement component 4, and the movable member 12 is rotated. Locked. This position is set to be a 45 degree position.

可動部材１２を更に回転させる場合は、同様に押圧操作部１５を押し下げて前記他方の旋回ロック構成部１４を一方の旋回ロック構成部４と切り離して回転すると、前記下段の長孔３２と同一レベルに等間隔に設定された３つの孔３１ｄ〜３１ｆに順次、係合することができ、孔３１ｄは６７．５度、孔３１ｅは９０度、孔３１ｆは１１２．５度の位置にそれぞれ設定されているので、それらの位置で係合突部２５を嵌め込んで、他方の旋回ロック構成部１４を一方の旋回ロック構成部４と切り離した状態で保持することができる。 When the movable member 12 is further rotated, the same level as that of the lower long hole 32 is obtained by pressing down the pressing operation portion 15 and rotating the other turning lock constituent portion 14 separately from the one turning lock constituent portion 4. Can be sequentially engaged with the three holes 31d to 31f set at equal intervals, the hole 31d is set at 67.5 degrees, the hole 31e is set at 90 degrees, and the hole 31f is set at 112.5 degrees. Therefore, the engagement protrusion 25 can be fitted at these positions, and the other turning lock component 14 can be held in a state separated from the one turning lock component 4.

なお、１３５度は、対称に配置された長孔部（便宜上符号に’を付す、以下同じ）３４’の下段の長孔３２’の端部３１ｇが相当する。
このように基準点となる下段の長孔３２の中央位置３１ａから時計回り又は反時計回りに可動部材１２を回転することで、ベッドの内側、または外側に回転側フレーム１１を回転させることができる。
なお、第２係合構成部である係合突部２５を係止する受部のピッチは、第１係合構成部４、１４である凹凸のピッチと揃えれば、第２係合構成部の係合を解除して僅かに旋回するだけで第１係合構成部の次のピッチの凹凸と係合することができる。 Note that 135 degrees corresponds to the end portion 31 g of the lower slot 32 ′ of the lower stage 34 ′ arranged symmetrically (for convenience, the symbol is attached to the same, hereinafter the same) 34 ′.
Thus, by rotating the movable member 12 clockwise or counterclockwise from the center position 31a of the lower elongated hole 32 serving as the reference point, the rotation-side frame 11 can be rotated inside or outside the bed. .
In addition, if the pitch of the receiving part which latches the engagement protrusion 25 which is a 2nd engagement structure part is arrange | equalized with the pitch of the unevenness | corrugation which is the 1st engagement structure parts 4 and 14, it will be 2nd engagement structure part. It is possible to engage with the unevenness of the next pitch of the first engaging component only by releasing the engagement and slightly turning.

上記構成からなっているので、ベッド使用者は、第１係合構成部４、１４が係合して可動部材１２の回転が拘束された状態から、押圧操作部１５を付勢力に抗して押し下げ、作動部材１７を介して、ロック部材１８を押し下げると、第１係合構成部４、１４の係合を解除してロック部材１８を下降させて、第２係合構成部２５、３１を係合することで可動部材１２を回転フリーの状態でロックする。
そして、押圧操作部１５から手を離し、回転側フレーム１１に回転方向へ力を加えることで、前記第２係合構成部２５、３１の係合が外れて回転し、同時に押圧操作部１５が付勢力で上昇し、次のピッチに設定された位置で第１係合構成部４、１４が係合して可動部材１２の回転を規制しロックする。 Since it consists of the said structure, the bed user resists the urging | biasing force against the press operation part 15 from the state which the 1st engagement structure parts 4 and 14 engaged and the rotation of the movable member 12 was restrained. When the lock member 18 is pushed down and pushed down via the actuating member 17, the engagement of the first engagement components 4 and 14 is released and the lock member 18 is lowered to move the second engagement components 25 and 31. By engaging, the movable member 12 is locked in a rotation free state.
Then, by releasing the hand from the pressing operation unit 15 and applying a force in the rotation direction to the rotation side frame 11, the engagement of the second engagement components 25 and 31 is disengaged, and the pressing operation unit 15 is simultaneously rotated. It rises by the urging force, and the first engaging components 4 and 14 are engaged at the position set at the next pitch to restrict and lock the rotation of the movable member 12.

そして、前記手順に戻って、一定間隔ごとに可動部材１２を回転させることができる。
また、前記押圧操作部１５を押し下げた状態を維持したままであれば、可動部材１２を任意の角度まで回転させることができ、前記第２係合構成部２５、３１の係合位置を通過する際にクリック感を与えることができる。
なお、第２係合構成部２５、３１の係合を容易にするために、固定部材２に固定されるロックガイド３０の係合受部３１の位置が、押圧操作部１５を押し下げた際の係合突部２５の位置と整合するように位置決めされている。 Then, returning to the procedure, the movable member 12 can be rotated at regular intervals.
Moreover, if the state which pressed down the said press operation part 15 is maintained, the movable member 12 can be rotated to arbitrary angles, and it passes the engagement position of the said 2nd engagement structure part 25 and 31. FIG. A feeling of clicking can be given.
Note that, in order to facilitate the engagement of the second engagement components 25 and 31, the position of the engagement receiving portion 31 of the lock guide 30 fixed to the fixing member 2 is when the pressing operation portion 15 is pushed down. It is positioned so as to be aligned with the position of the engaging protrusion 25.

本実施例では、係合受部は筒状のロックガイド３０に穿設された孔からなっているが、第２収納室３ｄの内壁面の下部に凹設した孔であってもよい。
また、一対の第１係合構成部４、１４は縦向きとしたが、回転軸部１６に対して垂直な歯を設けた冠歯車（フェイスギア）状としてもよい。
図１７に例示すると、他方の第１係合構成部４は、第２収納室３ｄの環状の上壁面に放射状に延びる凹凸状の歯を下向きにした冠歯車状に形成されており、一方の第１係合構成部１４は、ロック部材１３の環状の上壁面に放射状に延びる凹凸状の歯を上向きにした冠歯車状に形成されている。
この場合も、ロック部材１３の上昇時に前記一対の第１係合構成部４、１４が凹凸係合し、ロック部材１３を介して可動部材１２の旋回が規制される。
また、一対の第１係合構成部は凹部と突部の歯車状とした場合を例示したが、第２係合構成部と同様に、ボールプランジャ型で外向きに付勢されて横穴に出没自在な係合突部をロック部材１８の上部に設け、固定部材２の第２収納室３ｄの内壁面の上部に凹設した孔であってもよい。
その場合、上記孔は一定の回転角度のピッチで同一レベルに複数形成しておけばよい。 In the present embodiment, the engagement receiving portion is a hole formed in the cylindrical lock guide 30, but may be a hole recessed in the lower portion of the inner wall surface of the second storage chamber 3d.
Further, although the pair of first engagement components 4 and 14 are vertically oriented, they may be crown gears (face gears) provided with teeth perpendicular to the rotating shaft 16.
In the example shown in FIG. 17, the other first engaging component 4 is formed in a crown gear shape with concave and convex teeth extending downward on the annular upper wall surface of the second storage chamber 3d. The first engaging component 14 is formed on the annular upper wall surface of the lock member 13 in the shape of a crown gear with convex and concave teeth extending radially upward.
Also in this case, when the lock member 13 is raised, the pair of first engagement components 4 and 14 are engaged with each other, and the turning of the movable member 12 is restricted via the lock member 13.
In addition, the pair of first engagement components is illustrated as having a gear shape with a recess and a protrusion. However, as with the second engagement component, the ball plunger type is urged outward and appears in the horizontal hole. The hole which provided the free engagement protrusion in the upper part of the locking member 18, and was recessedly provided in the upper part of the inner wall face of the 2nd storage chamber 3d of the fixing member 2 may be sufficient.
In that case, a plurality of holes may be formed at the same level at a pitch of a fixed rotation angle.

また、本実施例では、可動部材１２の回転角度を一定範囲（内向きまたは外向きに１３５度）に設定しており、上限の角度で回転が規制されるようにストッパを設けることが好ましい。
例えば、図１に示すように、下側筒部３の上部の縁部に沿って１３５度を超える範囲に形成されたストッパ壁Ｓ１を突設しておき、可動部材１２の外周壁の下部には、上記ストッパ壁Ｓ１と衝合する衝合片Ｓ２を下向きに突設しておくことで、可動部材１２が上限を超えて回転することを防止しうる。 Further, in this embodiment, it is preferable that the rotation angle of the movable member 12 is set within a certain range (135 degrees inward or outward), and a stopper is provided so that the rotation is restricted at the upper limit angle.
For example, as shown in FIG. 1, a stopper wall S <b> 1 formed in a range exceeding 135 degrees along the upper edge portion of the lower cylindrical portion 3 is provided so as to protrude below the outer peripheral wall of the movable member 12. Can prevent the movable member 12 from rotating beyond the upper limit by projecting the abutting piece S2 that abuts against the stopper wall S1 downward.

このように、この発明では、押圧操作部１５を押し下げて可動部材の固定部材に対する旋回規制ロックを解除し、押圧操作部１５から手を離して回転側フレーム１１を所定ピッチで回転させることができる。
また押圧操作部１５を押し続けることで、回転側フレーム１１を任意の角度に回転させることができる。
これによって、回転側フレーム１１を開閉することができ、操作性に優れる。
この発明は、上記実施例に限定されるものではなく、要するにこの発明の要旨を変更しない範囲で種々設計変更することができる。 As described above, in the present invention, the pressing operation portion 15 is pushed down to release the turning restriction lock on the fixed member of the movable member, and the rotary frame 11 can be rotated at a predetermined pitch by releasing the hand from the pressing operation portion 15. .
Moreover, the rotation side frame 11 can be rotated to an arbitrary angle by continuing to press the pressing operation unit 15.
Thereby, the rotation side frame 11 can be opened and closed, and the operability is excellent.
The present invention is not limited to the above embodiments, and various design changes can be made without changing the gist of the present invention.

１固定側フレーム
２固定部材
３下方筒部
４一方の第１係合構成部
５スプリング
６一方の連動構成部
７他方の連動構成部
１０回転構造
１１回転側フレーム
１２可動部材
１３上方筒部
１４他方の第１係合構成部
１５押圧操作部
１６回転軸部
１７作動部材
１８ロック部材
１９収納孔
２０貫通孔
２０ａ上方中空部
２０ｂ中間中空部
２５係合突部
２６スプリング
２８固定リング
３０ロックガイド
３１係合受部 DESCRIPTION OF SYMBOLS 1 Fixed side frame 2 Fixed member 3 Lower cylinder part 4 One 1st engaging structure part 5 Spring 6 One interlocking structure part 7 The other interlocking structure part 10 Rotating structure 11 Rotating side frame 12 Movable member 13 Upper cylinder part 14 Other 1st engagement component 15 Press operation part 16 Rotating shaft part 17 Actuating member 18 Lock member 19 Storage hole 20 Through hole 20a Upper hollow part 20b Middle hollow part 25 Engagement protrusion 26 Spring 28 Fixing ring 30 Lock guide 31 Engagement Reception department

本発明は、上記課題を解決するために、請求項１の発明では、
ベッドサイドの固定側フレームと回転側フレームとの間に設けられる回転構造において、
固定側フレームに設けられる筒状の固定部材と、
回転側フレームに形成されると共に、前記固定部材の上方に回転可能に設けられた筒状の可動部材と、
上端が可動部材より上方に突出すると共に、上向きに付勢されて前記可動部材の中空内に挿入されるロック解除用の押圧操作部と、
前記可動部材に固定されると共に固定部材の中空内に挿入されて、固定部材に旋回可能に軸受された回転軸部と、
該回転軸部の回転に連動して回転すると共に、前記押圧操作部の昇降に連動して昇降するロック部材とを有し、
該ロック部材の外周壁の上部と、前記固定部材の内周壁の上部でロック部材が上昇した際に凹凸係合して可動部材の旋回を規制する一対の第１係合構成部が設けられ、
該ロック部材の外周壁の下部と、前記固定部材の内周壁の下部でロック部材が下降した際に凹凸係合してロック部材の旋回規制解除位置を保持する一対の第２係合構成部が設けられていることを特徴とする。
請求項２の発明では、
前記押圧操作部とロック部材の間に押圧部材の昇降をロック部材に連動させる作動部材を設けており、該作動部材は回転軸部内を貫通し上下に摺動しうることを特徴とする。
請求項３の発明では、
前記ロック部材が回転軸部に外嵌しており、ロック部材の内周面と回転軸部の外周面に、上下に延びる突条と凹溝とにより凹凸係合して、回転方向に連動する一対の凹凸構成部をそれぞれに設けてなることを特徴とする。
請求項４の発明では、
前記ロック部材に形成される第１係合構成部の一方が、ロック部材の外周壁に形成された内歯状の凹凸部からなっており、
固定部材に形成される第１係合構成部の他方が、前記内歯状の凹凸部に係合させる外歯状の凹凸部からなっていることを特徴とする。
請求項５の発明では、
前記ロック部材に形成される第１係合構成部の一方が、ロック部材の外周壁で開口する横穴に嵌合して外向きに付勢された係合突部からなり、
固定部材に形成される第１係合構成部の他方が、前記係合突部を係合させる係合受部からなっており、
該係合受部は、固定部材の軸線を中心にした周方向で可動部材の所定の回転角度に対応する位置に配置されていることを特徴とする。
請求項６の発明では、
前記ロック部材に形成される第２係合構成部の一方が、ロック部材の外周壁で開口する横穴に嵌合して外向きに付勢された係合突部からなり、
固定部材に形成される第２係合構成部の他方が、前記係合突部を係合させる係合受部からなっており、
該係合受部は、固定部材の軸線を中心にした周方向で可動部材の所定の回転角度に対応する位置に配置されていることを特徴とする。
請求項７の発明では、
前記第２係合構成部の係合受部が、固定部材の内周面に固着された筒状体のロックガイドに形成されて係合突部を掛止める孔部または長孔部からなっていることを特徴とする。
請求項８の発明では、
ロックガイドに形成された係合受部が、回転軸部の軸線を中心にしたロックガイドの周方向で一定の回転角度に対応するように複数配置された円形状の孔部と長孔部との組み合わせており、該長孔部が下段の長孔の左右で上下に連通する一対の上段の長孔を有すると共に、下段の長孔の中央の上縁が円弧状となって可動フレームが閉位置のときに係合突部が掛止められる基準点となっており、可動フレームが一定の角度まで回転した際に下段の長孔から上段の長孔に移動して、ロック部材の上昇を抑えて一対の第１係合構成部が係合しないように設定されていることを特徴とする。 In order to solve the above-mentioned problems, the present invention provides
In the rotating structure provided between the bedside fixed side frame and the rotating side frame,
A cylindrical fixing member provided on the fixed side frame;
A cylindrical movable member formed on the rotation side frame and rotatably provided above the fixed member;
A pressing operation portion for unlocking the upper end protruding upward from the movable member and biased upward and inserted into the hollow of the movable member;
A rotating shaft portion fixed to the movable member and inserted into a hollow of the fixed member, and rotatably supported by the fixed member;
A lock member that rotates in conjunction with the rotation of the rotary shaft portion and that moves up and down in conjunction with the elevation of the pressing operation portion;
A pair of first engagement components for engaging the concave and convex portions when the lock member is raised at the upper part of the outer peripheral wall of the lock member and the upper part of the inner peripheral wall of the fixed member to restrict the turning of the movable member;
A pair of second engagement components that engage with the concave and convex portions when the lock member descends at the lower portion of the outer peripheral wall of the lock member and the lower portion of the inner peripheral wall of the fixing member to hold the rotation restriction release position of the lock member. It is provided.
In the invention of claim 2,
An actuating member is provided between the pressing operation portion and the lock member to interlock the raising and lowering of the press member with the lock member, and the actuating member can pass through the rotary shaft portion and slide up and down.
In the invention of claim 3,
The lock member is externally fitted to the rotating shaft portion, and is engaged with the inner peripheral surface of the lock member and the outer peripheral surface of the rotating shaft portion by protrusions and recesses extending vertically to interlock with the rotation direction. It is characterized by providing a pair of uneven | corrugated structure part to each.
In the invention of claim 4,
One of the first engagement components formed on the lock member is composed of an internal tooth-shaped uneven portion formed on the outer peripheral wall of the lock member,
The other of the first engaging components formed on the fixing member is formed by an external tooth-shaped uneven portion that engages with the internal tooth-shaped uneven portion.
In the invention of claim 5,
One of the first engagement components formed on the lock member is an engagement protrusion that is fitted in a lateral hole that opens at the outer peripheral wall of the lock member and is biased outward.
The other of the first engagement components formed on the fixing member is an engagement receiving portion that engages the engagement protrusion,
The engagement receiving portion is arranged at a position corresponding to a predetermined rotation angle of the movable member in a circumferential direction around the axis of the fixed member.
In the invention of claim 6,
One of the second engagement components formed on the lock member is composed of an engagement protrusion that is fitted in a lateral hole that opens at the outer peripheral wall of the lock member and is biased outward.
The other of the second engagement components formed on the fixing member is an engagement receiving portion that engages the engagement protrusion,
The engagement receiving portion is arranged at a position corresponding to a predetermined rotation angle of the movable member in a circumferential direction around the axis of the fixed member.
In the invention of claim 7,
The engagement receiving portion of the second engagement component portion is formed of a hole portion or a long hole portion that is formed on a lock guide of a cylindrical body fixed to the inner peripheral surface of the fixing member and latches the engagement protrusion. It is characterized by being.
In the invention of claim 8,
A plurality of circular holes and elongated holes arranged so that the engagement receiving portion formed on the lock guide corresponds to a certain rotation angle in the circumferential direction of the lock guide around the axis of the rotation shaft portion, The long hole portion has a pair of upper long holes communicating vertically with the left and right of the lower long hole, and the upper edge of the center of the lower long hole is arcuate to close the movable frame. This is the reference point where the engaging protrusion is hooked when in position, and when the movable frame rotates to a certain angle, it moves from the lower slot to the upper slot to prevent the lock member from rising. The pair of first engaging components are set so as not to engage with each other.

本発明のベッドサイドのフレーム回転構造では、ロック解除用の押圧操作部を押し下げると、作動部材を介してロック部材を押し下げて一対の第１係合構成部の係合を解除し、該第１係合構成部の係合を解除した位置で第２係合構成部が係合して、第１係合構成部の解除姿勢を維持するので、可動部材を回転可能とする。
可動部材の回転で、一対の第２係合構成部の係合が解除されると共に、可押圧操作部を押し下げる力がかからなくなると押圧操作部が付勢力で上昇し、一対の第１係合構成部が係合し、該係合位置で可動部材を固定部材に拘束する。
これにより、押圧操作部を押し下げて可動部材の固定部材に対する旋回規制ロックを解除し、回転側フレームを回転させることができ、また押圧操作部を押し続けることで回転側フレームを任意の角度に回転させて、回転側フレームを開閉することができる。
また、ロックガイドに形成された係合受部が、下段の長孔の左右で上下に連通する一対の上段の長孔を設け、下段の長孔の中央を可動フレームが閉位置のときに係合突部が掛止められる基準点とし、可動フレームが回転規制を必要としない一定の角度まで回転した際に下段の長孔から上段の長孔に移動させることで、ロック部材の上昇を抑えて一対の第１係合構成部の係合を阻止することができる。 In the bedside frame rotation structure of the present invention, when the pressing operation portion for unlocking is pushed down, the locking member is pushed down via the actuating member to release the engagement of the pair of first engaging components. Since the second engagement component is engaged at the position where the engagement component is disengaged and the released posture of the first engagement component is maintained, the movable member can be rotated.
When the engagement of the pair of second engagement components is released by the rotation of the movable member, and the force to push down the pressable operation portion is no longer applied, the press operation portion is raised by the biasing force, and the pair of first engagement members The combined component is engaged, and the movable member is restrained to the fixed member at the engagement position.
As a result, it is possible to release the turning restriction lock for the fixed member of the movable member by depressing the pressing operation unit, and to rotate the rotation side frame, and to rotate the rotation side frame to an arbitrary angle by continuing to press the pressing operation unit. Thus, the rotation side frame can be opened and closed.
Further, the engagement receiving portion formed on the lock guide has a pair of upper long holes communicating vertically with the left and right of the lower long hole, and the center of the lower long hole is engaged when the movable frame is in the closed position. As a reference point where the mating protrusion is hooked, when the movable frame rotates to a certain angle that does not require rotation regulation, it moves from the lower long hole to the upper long hole to suppress the rise of the lock member Engagement of the pair of first engagement components can be prevented.

［ロック部材］
次に、中継部３ｃを介して下方に配置された第２収納室３ｄには、回転軸部１６の下部と回転方向に連動可能に係合するように外嵌された略円筒状のロック部材１８が収納されている。
即ち、ロック部材１８は、図１２〜１３に示すように、旋回ロック用の第１係合構成部の一例として上下に延びる凹溝を等間隔に環状に形成した外歯状の他方の第１係合構成部１４が外周壁の上部に沿って形成されている。
上記他方の第１係合構成部１４は前記一方の第１係合構成部４に対して、回転軸部１６およびロック部材１８の軸線を中心にして旋回方向にロックし、上下方向（本実施例では下方向）には摺動して係合を離脱しうる。 [Lock member]
Next, a substantially cylindrical lock member that is externally fitted to the second storage chamber 3d disposed below via the relay portion 3c so as to be able to engage with the lower portion of the rotary shaft portion 16 in a rotational direction. 18 is stored.
That is, the locking member 18, as shown in FIG. 12-13, the outer toothed other hand formed annularly at equal intervals groove extending vertically as an example of a first engaging component for rotation lock One engagement component 14 is formed along the top of the outer peripheral wall.
The first engaging component 14 of the other side is locked to the first engagement structure portion 4 of the hand, about the axis of the rotating shaft portion 16 and the locking member 18 in the turning direction, the vertical direction ( In this embodiment, it is possible to disengage by sliding in the downward direction).

Claims

In the rotating structure provided between the bedside fixed side frame and the rotating side frame,
A cylindrical fixing member provided on the fixed side frame;
A cylindrical movable member formed on the rotation side frame and rotatably provided above the fixed member;
A pressing operation portion for unlocking the upper end protruding upward from the movable member and biased upward and inserted into the hollow of the movable member;
A rotating shaft portion fixed to the movable member and inserted into a hollow of the fixed member, and rotatably supported by the fixed member;
A lock member that rotates in conjunction with the rotation of the rotary shaft portion and that moves up and down in conjunction with the elevation of the pressing operation portion;
A pair of first engagement components for engaging the concave and convex portions when the lock member is raised at the upper part of the outer peripheral wall of the lock member and the upper part of the inner peripheral wall of the fixed member to restrict the turning of the movable member;
A pair of second engagement components that engage with the concave and convex portions when the lock member descends at the lower portion of the outer peripheral wall of the lock member and the lower portion of the inner peripheral wall of the fixing member to hold the rotation restriction release position of the lock member. A bedside frame rotation structure characterized by being provided.

An actuating member is provided between the pressing operation portion and the lock member, the actuating member interlocking with the lock member, and the actuating member can pass through the rotary shaft portion and slide up and down. The bedside frame turning structure described in 1.

A lock member is externally fitted to the rotation shaft portion, and a pair of projections and recesses extending vertically to engage with the inner peripheral surface of the lock member and the outer peripheral surface of the rotation shaft portion, and interlocked with the rotation direction. 3. The bedside frame rotating structure according to claim 1, wherein each of the concave-convex constituent portions is provided.

One of the first engagement constituent parts formed on the lock member is composed of an internal tooth-like uneven part formed on the outer peripheral wall of the lock member,
The other of the 1st engagement structure parts formed in a fixing member consists of an external-tooth-shaped uneven part engaged with the said internal-tooth-shaped uneven part, The any one of Claim 1 to 3 characterized by the above-mentioned. The bedside frame turning structure described in 1.

One of the first engagement components formed on the lock member is an engagement protrusion that is fitted in a lateral hole that opens at the outer peripheral wall of the lock member and is biased outward.
The other of the first engagement components formed on the fixing member is an engagement receiving portion that engages the engagement protrusion,
The engagement receiving portion is disposed at a position corresponding to a predetermined rotation angle of the movable member in a circumferential direction around the axis of the fixed member. Bedside frame rotation structure.

One of the second engagement components formed on the lock member is an engagement protrusion that is fitted in a lateral hole that opens at the outer peripheral wall of the lock member and is biased outward.
The other of the second engagement components formed on the fixing member is an engagement receiving portion that engages the engagement protrusion,
6. The engagement receiving portion according to claim 1, wherein the engagement receiving portion is disposed at a position corresponding to a predetermined rotation angle of the movable member in a circumferential direction around the axis of the fixed member. Bedside frame rotation structure.

The engagement receiving portion of the second engagement component portion is formed of a hole portion or a long hole portion that is formed on the lock guide of the cylindrical body fixed to the inner peripheral surface of the fixing member and latches the engagement protrusion. The bedside frame rotating structure according to any one of claims 1 to 6, wherein the bedside frame is rotated.