JP4556056B2 - bed - Google Patents

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JP4556056B2
JP4556056B2 JP2003355773A JP2003355773A JP4556056B2 JP 4556056 B2 JP4556056 B2 JP 4556056B2 JP 2003355773 A JP2003355773 A JP 2003355773A JP 2003355773 A JP2003355773 A JP 2003355773A JP 4556056 B2 JP4556056 B2 JP 4556056B2
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body bottom
upper body
housing
fulcrum
raising
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JP2005118240A5 (en
JP2005118240A (en
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忠 井浦
憲三 和田
良行 束村
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株式会社いうら
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本願発明は、ベッドと、その背上げリンク及び背上げ制御に関するものである。   The present invention relates to a bed, its back-up link and back-up control.

従来の技術には、作動部のアクチュエーターにより作動する背上げリンクによって下枠部材を介し背ボトムが傾斜する際、下枠部材先端のローラーに、可動フレーム上のローラー受けを移動させ、フットボードに対向する背ボトムにおける先端側の上昇方向への動きを増大させて背ボトムの傾斜動作を促進させ、背ボトムを傾斜角度(35〜40°)まで、背ボトムの端部とヘッドボードとの間隔を、背ボトムの平坦時と変わらない状態とする構成のものがある。 In the conventional technology, when the back bottom is tilted via the lower frame member by the back raising link operated by the actuator of the operation unit, the roller receiver on the movable frame is moved to the roller at the tip of the lower frame member, The movement of the tip back side in the upward direction at the opposite back bottom is increased to promote the inclination movement of the back bottom, and the distance between the back bottom end and the headboard up to the inclination angle (35 to 40 °). Is configured to be in the same state as when the back bottom is flat.

この技術によると、アクチュエーターを背上げリンクの回動に伴い揺動させるようにした該背上げリンクによって、背ボトムが背上げされる際に、背ボトムの上昇方向への動きを増大させ、かつ背ボトムを水平状態に戻す際には、相対的に下降方向への動きを減少させている。しかし、これによると、作動部のアクチュエーターを揺動させるようにしているため、背上げリンクの構成が複雑なものとなっている(例えば、特許文献1参照)
特開平10−155840号公報
According to this technology, when the back bottom is lifted up by the back raising link that is configured to swing the actuator with the rotation of the back raising link, the movement of the back bottom in the upward direction is increased, and When the back bottom is returned to the horizontal state, the movement in the downward direction is relatively reduced. However, according to this, since the actuator of the operating part is swung, the configuration of the back raising link is complicated (for example, see Patent Document 1) .
JP-A-10-155840

そこで、本願発明は上記事情を鑑みてなされたものであり、作動部を揺動させることなく、より簡潔な構成の背上げリンクにより、所望する上半身ボトムの最大傾斜角度を確保しつつ、上半身ボトムが水平状態に近づくにつれて起伏速度を遅くすることができるベッドを提供することを課題とする。   Accordingly, the present invention has been made in view of the above circumstances, and while ensuring the maximum inclination angle of the desired upper body bottom with a back-up link having a simpler configuration without swinging the operating portion, the upper body bottom It is an object of the present invention to provide a bed that can reduce the undulation speed as it approaches a horizontal state.

請求項1の発明は、基台部に沿って前後に移動する移動台部上に下半身ボトムを取り付ける一方、該下半身ボトムに連設するように上半身ボトムを設けるに、該上半身ボトムは前記移動台部の前後移動に連動して作動する背上げリンクを介して起伏するよう取り付けるに、該背上げリンクは、前記上半身ボトムの下半身ボトム側の端部に一端部を支承するとともに前記移動台部に中間部を支承する第一杆体と、前記上半身ボトムの中間部に一端部を回動自在に支承した第二杆体と、該第二杆体の他端部と前記基台部の頭側にそれぞれ回動自在に支承した第三杆体と、前記第一杆体の他端部と前記第三杆体の中間部にそれぞれ回動自在に支承する第四杆体からなり、前記第二杆体には切替ピンを設けることで少なくとも前記第二杆体と前記第三杆体が直線状態から該切替ピンに接当するまでの範囲で回動自在とし、前記移動台部が足側に位置しているときには前記第二杆体が前記上半身ボトムに沿った状態で前記下半身ボトムと上半身ボトムが水平状態となり、前記移動台部の頭側への移動に伴い前記第一杆体を介して前記第四杆体が前記第三杆体を上方回動させる一方、前記第二杆体は前記上半身ボトムに沿った状態を維持しながら前記切替ピンに前記第三杆体が接するまで回動し前記上半身ボトムが前記第二杆体と前記第三杆体の支承部を第二の背上げ支点として起立した後、前記切替ピンにより前記第二杆体と第三杆体が一定の屈曲状態のまま上方回動され、前記上半身ボトムが前記第二杆体との支承部を第一の背上げ支点として起立するよう構成し、このときの第一の背上げ支点よりも前記第二の背上げ支点を前記上半身ボトムの頭部側に位置するように構成したことを特徴とする。 According to the first aspect of the present invention , the lower body bottom is attached to the moving base part that moves back and forth along the base part, and the upper body bottom is provided so as to be connected to the lower body bottom. The back link is attached to the end of the lower body bottom side of the upper body bottom, and is attached to the moving base unit. A first housing for supporting the intermediate portion, a second housing having one end pivotably supported on the intermediate portion of the upper body bottom, and a second housing that rotates to the other end of the second housing and the head side of the base portion. A third housing that is movably supported, a fourth housing that is rotatably supported at the other end of the first housing and an intermediate portion of the third housing, and a switching pin is provided on the second housing. At least the second housing and the third The body can be freely rotated in a range from a straight state to contact with the switching pin, and when the moving base is located on the foot side, the second body bottom is in a state along the upper body bottom. And the upper body bottom is in a horizontal state, and the fourth housing rotates the third housing upward through the first housing with the movement of the movable platform to the head side, while the second housing is the upper body After maintaining the state along the bottom and rotating until the third housing comes into contact with the switching pin, the bottom of the upper body stands up with the support portion of the second housing and the third housing as the second back lifting fulcrum The second housing and the third housing are rotated upward in a certain bent state by the switching pin, and the upper body bottom is configured to stand with the support portion with the second housing as a first back-lifting fulcrum. , This time the first back up Characterized by being configured the second back-raising fulcrum so as to be positioned on the head side of the upper body bottom than the point.

したがって、請求項1の発明によれば、上半身ボトムが背上げされた状態から水平状態へ戻される際に、背上げリンクを構成する杆体の上半身ボトムを背上げする背上げ支点が、背上げリンクの回動に伴い、第一の背上げ支点から、上半身ボトムの回動中心から遠い第二の背上げ支点に切り替わるように、前記第三杆体の後部に第二杆体を具備し、該第二杆体を前記第三杆体と上半身ボトムとの間に介在させるようにした。すなわち、棒部材を、該棒部材の一端を中心に回動させたとき、棒部材の押上げ量が同量であれば、棒部材の回動中心から、遠い位置で押し上げるほど、棒部材の回動量が少なくなる現象を利用している。これによると、上半身ボトムが水平状態に近づくと、その起伏速度を遅くすることができる。したがって、第一の背上げ支点を、上半身ボトムを最大傾斜角度まで背上げ可能とする背上げ支点としておけば、上半身ボトムの所望する起伏速度を遅くすることができる。
このように、起伏される上半身ボトムの所望する最大傾斜角度を確保しつつ、少なくとも前記上半身ボトムが背上げされた状態から水平状態へ戻される際に、上半身ボトムが水平状態に近づく起伏速度を遅くすることができるように構成した。これによると、上半身ボトムが減速しながら水平状態に戻るようになる。したがって、上半身ボトムが水平状態に戻ったときに、水平状態で上半身ボトムを支持する基台部と上半身ボトムとの接触による衝撃を弱めることができ、利用者にその衝撃を実質的に感じさせないようにできる。また、まもなく上半身ボトムが停止することを利用者に知らせることができる。
Therefore, according to the first aspect of the present invention, when the upper body bottom is returned to the horizontal state from the state where the upper body bottom is raised, the back lifting fulcrum for raising the upper body bottom of each housing constituting the back link is with the rotation of the link, from the first back lifting fulcrum, to switch to far second back lifting fulcrum from the center of rotation of the upper body bottom, comprises a second rod to the rear of the third rod, said first The second housing was interposed between the third housing and the upper body bottom. That is, when the rod member is rotated around one end of the rod member, if the amount of push-up of the rod member is the same, the more the rod member is pushed away from the pivot center of the rod member, The phenomenon that the amount of rotation is reduced is used. According to this, when the upper body bottom approaches the horizontal state, the undulation speed can be reduced. Therefore, if the first back raising fulcrum is a back raising fulcrum that allows the upper body bottom to be raised to the maximum inclination angle, the desired undulation speed of the upper body bottom can be reduced.
Thus, while ensuring the maximum inclination angle to the desired upper body bottom to be contoured, when at least the upper body bottom is returned from the back lifting state to the horizontal state, the a relief rate upper body bottom approaches a horizontal state Configured to be slow. According to this, the upper body bottom comes back to the horizontal state while decelerating. Therefore, when the upper body bottom returns to the horizontal state, the impact caused by the contact between the base part supporting the upper body bottom in the horizontal state and the upper body bottom can be weakened so that the user does not feel the impact substantially. Can be. In addition, it is possible to inform the user that the upper body bottom will stop soon.

本願発明にかかるベッドは、上半身ボトムが背上げされた状態から水平状態へ戻される際に、背上げリンクを構成する杆体の上半身ボトムを背上げする背上げ支点が、背上げリンクの回動に伴い、第一の背上げ支点から、上半身ボトムの回動中心から遠い第二の背上げ支点に切り替わるように、前記杆体の後部に杆体を具備し、該杆体を前記杆体と上半身ボトムとの間に介在させるようにした。
すなわち、棒部材を、該棒部材の一端を中心に回動させるとき、棒部材の押上げ量が同量であれば、棒部材の回動中心から、遠い位置で押し上げるほど、棒部材の回動量が少なくなる現象を利用している。
In the bed according to the present invention, when the upper body bottom is returned to the horizontal state from the state where the upper body bottom is raised, the back lifting fulcrum for raising the upper body bottom of the housing constituting the back raising link is Accordingly, a housing is provided at the rear of the housing so as to switch from the first back raising fulcrum to the second back raising fulcrum far from the center of rotation of the upper body bottom, and the housing is disposed between the housing and the upper body bottom. To intervene.
That is, when the rod member is rotated about one end of the rod member, if the amount of pushing up of the rod member is the same amount, the more the rod member is pushed away from the rotation center of the rod member, the more the rod member rotates. The phenomenon that the amount of dynamics is reduced is used.

これによると、上半身ボトムが水平状態に近づくと、その起伏速度を遅くすることができる。したがって、第一の背上げ支点を、上半身ボトムを最大傾斜角度まで背上げ可能とする背上げ支点としておけば、上半身ボトムの所望する最大傾斜角度を確保しつつ、上半身ボトムが水平状態に近づくにつれて、起伏速度を遅くすることができる。   According to this, when the upper body bottom approaches the horizontal state, the undulation speed can be reduced. Therefore, if the first back raising fulcrum is set as a back raising fulcrum that allows the upper body bottom to be raised to the maximum inclination angle, the desired upper inclination angle of the upper body bottom is secured and the upper body bottom approaches the horizontal state. Can slow down the undulation speed.

本願発明にかかるベッドの一実施形態を図面に基づいて説明する。第1図はベッドを示す全体平面図である。第2図はベッドを示す全体側面図である。第3図はベッドを示す部分断面平面図である。第4図は第3図におけるA−A断面図である。第5図は動力源にモーターを用いた作動部の構成を示す説明図である。第6図はベッドの背上げの様子を示す説明図である。第7図は背上げリンクの原理を示す説明図である。第8図は背上げ支点を切り替えない場合の背上げの様子を示す説明図である。第9図は上半身ボトムの起伏を示す説明図である。第10図は別の背上げリンクの要部を示す説明図である。なお、利用者がベッドに仰臥した状態で頭側を前とした利用者の向きを基準として、前後左右とする。   An embodiment of a bed according to the present invention will be described with reference to the drawings. FIG. 1 is an overall plan view showing a bed. FIG. 2 is an overall side view showing the bed. FIG. 3 is a partial sectional plan view showing the bed. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is an explanatory view showing a configuration of an operation unit using a motor as a power source. FIG. 6 is an explanatory view showing a state of raising the back of the bed. FIG. 7 is an explanatory view showing the principle of a back-up link. FIG. 8 is an explanatory view showing a state of raising the back when the back-lifting fulcrum is not switched. FIG. 9 is an explanatory view showing the undulation of the upper body bottom. FIG. 10 is an explanatory view showing a main part of another back raising link. In addition, it is set as front, back, left, and right with reference to the orientation of the user with the head facing forward while the user is lying on the bed.

このベッド1は、基台部2と、該基台部2に前後移動可能に配設される移動台部3と、該移動台部3を前後移動させる作動部4と、移動台部3と基台部2の間に構成される背上げリンク5,5と、移動台部3に支持される下半身ボトム6と、前記背上げリンク5,5に支持される上半身ボトム7とを主として構成される。 The bed 1 includes a base portion 2, a mobile base unit 3 is movably disposed back and forth in the base stand part 2, the operating portion 4 that moves back and forth the moving table unit 3, a mobile base unit 3 Mainly composed of back-up links 5, 5 configured between the base units 2, a lower body bottom 6 supported by the movable table unit 3, and an upper-body bottom 7 supported by the back-up links 5, 5. The

まず、基台部2について説明する。
2a,2aはリップ溝型鋼を利用した左右一対のレール桁である。該一対のレール桁2a,2aの開口している側が互いに向かい合うように、左右方向に離間させ、そして、該レール桁2a,2aの前端を左右方向の桁パイプ2bにて連結させる。
2c,2cは下部に接地部材2d,2dを取付けた支柱脚である。該支柱脚2c,2cの上部を前記桁パイプ2bの両端にそれぞれ固着させる。そして、前記支柱脚2c,2cと略々同様の下部に接地部材2d,2dを取付けた支柱脚2e,2eを前記レール桁2a,2aの後部下面に固着させる。
然る後、前記支柱脚2e,2eの上部間を連結するように補強パイプ2fを固着させるとともに、前記支柱脚2c,2cの略々中間部間を連結するように補強パイプ2gを固着させる。
First, the base unit 2 will be described.
2a and 2a are a pair of left and right rail girders using lip groove steel. The pair of rail girders 2a, 2a are spaced apart in the left-right direction so that the open sides face each other, and the front ends of the rail girders 2a, 2a are connected by a left-right girder pipe 2b.
Reference numerals 2c and 2c denote support legs having grounding members 2d and 2d attached to the lower part thereof. The upper portions of the support legs 2c and 2c are fixed to both ends of the beam pipe 2b. Then, the column legs 2e, 2e having grounding members 2d, 2d attached to the lower portions substantially similar to the column legs 2c, 2c are fixed to the lower surfaces of the rear portions of the rail girders 2a, 2a.
Thereafter, the reinforcing pipe 2f is fixed so as to connect the upper portions of the support legs 2e, 2e, and the reinforcing pipe 2g is fixed so as to connect the substantially intermediate portions of the support legs 2c, 2c.

8,8は差込筒である。該差込筒8,8を、連結板8a,8aを介して、前記支柱脚2c,2cの前側面に固着させる。このときに、差込筒8,8が上下方向の軸心を持つようにさせる。
そして、前記差込筒8,8に、ヘッドボード9の下部に取付けられた嵌合軸9a,9aを差込ませ、基台部2は平面視において略々鳥居形状に構成される。
8 and 8 are insertion cylinders. The insertion cylinders 8 and 8 are fixed to the front side surfaces of the support legs 2c and 2c through connecting plates 8a and 8a. At this time, the insertion cylinders 8 and 8 are caused to have a vertical axis.
Then, fitting shafts 9a and 9a attached to the lower part of the headboard 9 are inserted into the insertion cylinders 8 and 8, and the base portion 2 is configured in a substantially torii shape in plan view.

次に、移動台部3について説明する。
3a,3aは左右一対の主桁である。該主桁3a,3aを左右方向に離間させ、そして、左右の主桁3a,3aの内側間を連結する連結桁3b,3cを、主桁3a,3aの中間部と後部にそれぞれ固着させる。さらに、略々コ字状に曲げた連結パイプ3dを、左右の主桁3a,3aの前部下面に、該連結パイプ3dが主桁3a,3aから下方に突出するように、その両端を固着させる。
なお、左右の主桁3a,3aの間隔は、前記基台部2のレール桁2a,2aの間隔よりも狭くしている。
Next, the movable table part 3 will be described.
3a and 3a are a pair of left and right main girders. The main girders 3a and 3a are separated from each other in the left-right direction , and the connecting girders 3b and 3c for connecting the insides of the left and right main girders 3a and 3a are fixed to the middle and rear portions of the main girders 3a and 3a, respectively. Further, the connection pipe 3d bent in a substantially U shape is fixed to the front lower surface of the left and right main girders 3a, 3a so that the both ends of the connection pipe 3d protrude downward from the main girders 3a, 3a. Let
The interval between the left and right main girders 3a, 3a is made narrower than the interval between the rail girders 2a, 2a of the base portion 2.

10,10,・・・は車軸である。該車軸10,10,・・・は、前記主桁3a,3aの前部と後部に、一端が左右外方向へ突出するように取付けられ、他端には前記基台部2のレール桁2a,2aの内部で転動可能なローラー11,11,・・・が取付けられて、移動台部3は構成されている。
したがって、移動台部3は、前記基台部2のレール桁2a,2aに沿って、前後方向に移動可能とされている。
10, 10,... Are axles. The axles 10, 10,... Are attached to the front and rear portions of the main girders 3a, 3a so that one end protrudes leftward and rightward and the other end is attached to the rail girder 2a of the base portion 2. , 2a are attached to rollable rollers 11, 11,...
Thus, mobile base unit 3, the rails digits 2a of the base portion 2, along the 2a, and is movable in the longitudinal direction.

次に、前記移動台部3を前後移動させる作動部について説明する。
12,12は動力源となるアクチュエーター13の後部と前記移動台部3とを連結するための連結具である。この連結具12,12は空孔部12a,12aが穿たれた板材であり、前記移動台部3の連結桁3bの中間部に、連結具12,12の空孔部12a,12a軸心が一致するように、かつ連結桁3bの前方に位置するように、それぞれ固着させる。そして、アクチュエーター13の後部を前記連結具12,12の空孔部12a,12a間に配設し、両者を連結軸14にて連結させる。
15はアクチュエーター13の前部と前記基台部2とを連結するための連結具である。この連結具15は平面視において略々コ字状、かつ側面視において略々三角形状をしており、後方へ突出している頂点近傍には左右方向の軸心を持つ空孔部15a,15aが穿たれている。該連結具15を前記基台部2の桁パイプ2bと補強パイプ2gの略々中間部に固着させる。そして、アクチュエーター13の前部を該連結具15の空孔部15a,15a間に配設し、両者を連結軸16にて連結させて、作動部4は構成される。
なお、アクチュエーター13を操作するリモコンスイッチ(図示省略)が、利用者がベッド1に仰臥した状態で操作可能な位置に配設される。
Next, the operation part for moving the moving table part 3 back and forth will be described.
Reference numerals 12 and 12 denote connecting tools for connecting the rear portion of the actuator 13 serving as a power source and the movable table 3. The coupling tools 12 and 12 are plate members with holes 12a and 12a formed therein, and the hole parts 12a and 12a axial centers of the coupling tools 12 and 12 are located in the middle part of the coupling beam 3b of the movable table 3. Each of them is fixed so as to match and to be positioned in front of the connecting beam 3b. Then, the rear portion of the actuator 13 is disposed between the hole portions 12 a and 12 a of the couplers 12 and 12, and both are coupled by the coupling shaft 14.
Reference numeral 15 denotes a connecting tool for connecting the front portion of the actuator 13 and the base portion 2. This connector 15 is substantially U-shaped in a plan view and substantially triangular in a side view, and air holes 15a, 15a having a lateral axis are provided in the vicinity of the apex protruding rearward. It is worn. The connector 15 is fixed to a substantially intermediate portion between the girder pipe 2b and the reinforcing pipe 2g of the base portion 2. And the front part of the actuator 13 is arrange | positioned between the hole parts 15a and 15a of this connection tool 15, and both are connected with the connection shaft 16, and the action | operation part 4 is comprised.
Note that a remote control switch (not shown) for operating the actuator 13 is disposed at a position where the user can operate while lying on the bed 1.

したがって、作動部4は、リモコンスイッチ(図示省略)を操作し、アクチュエーター13を伸長させると移動台部3は後方へ向かって移動し、縮めると移動台部3は前方へ向かって移動するように構成されている。 Therefore, operation unit 4 operates the remote control switch (not shown), as is the moving base portion 3 and to extend the actuator 13 moves rearward, the mobile base unit 3 and the Contract is moved toward the front It is configured.

なお、作動部4の動力源として、本実施例ではアクチュエーター13を用いているが、動力源にモーターを用いることもできる。そこで、第5図に基づいて、動力源にモーターを用いる場合の一例を説明する。
17はネジ軸である。該ネジ軸17に移動ナット18を螺着させる。そして、ねじ軸17の一端を支持部材19に枢結し、他端をモーター20のシャフト20aに固定させる。然る後、ネジ軸17を回転させたときに、前記移動ナット18がネジ軸17とともに回転しないように支持する固定具21,21を、移動ナット18に取付け、該固定具21,21をレール22,22に掛けるようにさせる。
このようにすると、モーター20を作動させ、ネジ軸17を回転させても、該ネジ軸17に螺着している移動ナット18は、固定具21,21とレール22,22により回転できないように支持されているので、移動ナット18は回転することなく、ネジ軸17と移動ナット18のネジの嵌合関係により、移動ナット18はネジ軸17に沿って移動する。
したがって、前記基台部2にモーター20及びネジ軸17及び支持部材19を配設し、移動ナット18に前記移動台部3を固定すれば、モーター20により前記移動台部3を前後移動できるようになり、モーター20を用いた作動部を越す英することができる。
In this embodiment, the actuator 13 is used as a power source for the operating unit 4, but a motor can be used as the power source. An example of using a motor as a power source will be described with reference to FIG.
Reference numeral 17 denotes a screw shaft. A moving nut 18 is screwed onto the screw shaft 17. Then, one end of the screw shaft 17 is pivotally connected to the support member 19, and the other end is fixed to the shaft 20 a of the motor 20. Thereafter, when the screw shaft 17 is rotated, the fixtures 21 and 21 that support the movable nut 18 so as not to rotate together with the screw shaft 17 are attached to the movable nut 18, and the fixtures 21 and 21 are attached to the rail. 22 and 22 are hung.
In this way, even if the motor 20 is operated and the screw shaft 17 is rotated, the moving nut 18 screwed on the screw shaft 17 cannot be rotated by the fixtures 21 and 21 and the rails 22 and 22. Since the moving nut 18 is supported, the moving nut 18 moves along the screw shaft 17 by the fitting relationship between the screw shaft 17 and the moving nut 18 without rotating .
Therefore, if the motor 20, the screw shaft 17, and the support member 19 are disposed on the base 2 and the moving base 3 is fixed to the moving nut 18, the moving base 3 can be moved back and forth by the motor 20. Thus, it is possible to cross the operating part using the motor 20.

次に、前記移動台部3に支持される下半身ボトム6について説明する。
下半身ボトム6は平面視において略々矩形状の枠体6aを備えており、該枠体6aの左側辺と右側辺の略々中間部を連結する左右方向の補強パイプ6bが固着される。そして、該補強パイプ6bと枠体6aの前側辺又は後側辺とを連結する前後方向の補強パイプ6c,6c,・・・を、平面視において前記移動台部3の主桁3a,3aと略々一致する位置に複数本固着させる。然る後、前記前後方向の補強パイプ6c,6c,・・・を固着させて、下半身ボトム6は構成される。
この下半身ボトム6を前記移動台部3に排泄し、下半身ボトム6の取付具6d,6d,・・・と移動台部3の主桁3a,3aとをネジ23,23,・・・で固定する。そたがって、この下半身ボトム6は前記移動台部3と一体となって、前後方向に移動可能となる。
なお、下半身ボトム6には、前記前後方向の補強パイプ6c,6c,・・・あるいは前記左右方向の補強パイプ6bと平行に複数本のステー(図示省略)が固着されている。
Next, the lower body bottom 6 supported by the movable table 3 will be described.
The lower body bottom 6 is provided with a substantially rectangular frame 6a in plan view, and a left and right reinforcing pipe 6b that connects a substantially middle portion between the left side and the right side of the frame 6a is fixed thereto. And the reinforcing pipes 6c, 6c,... In the front-rear direction connecting the reinforcing pipe 6b and the front side or the rear side of the frame 6a are connected to the main girders 3a, 3a of the movable table 3 in plan view. A plurality of pieces are fixed at substantially matching positions. Thereafter, the lower body bottom 6 is constructed by fixing the longitudinal reinforcing pipes 6c, 6c,.
The lower body bottom 6 is excreted to the moving base 3, and the fixtures 6d, 6d,... Of the lower body bottom 6 and the main girders 3a, 3a of the moving base 3 are fixed with screws 23, 23,. To do. Therefore, the lower body bottom 6 can be moved in the front-rear direction together with the moving table 3.
A plurality of stays (not shown) are fixed to the lower body bottom 6 in parallel with the reinforcing pipes 6c, 6c,... In the front-rear direction or the reinforcing pipe 6b in the left-right direction.

次に、上半身ボトム7について説明する。
上半身ボトム7は平面視において略々矩形状の枠体7aを備えており、該枠体7aの前側辺と後側辺を連結する前後方向の桁パイプ7b,7b、平面視において前記移動台部3の主桁3a,3aよりやや内側に位置するようにそれぞれ固着させる。そして、後側辺の前記桁パイプ7b,7bの取付け近傍に、空孔部24a,24a,・・・が穿たれた第一軸受部材24,24を、側面視において空孔部24a,24a,・・・が前記枠体7aの後方下方に位置するように、かつ軸心が一致するようにそれぞれ固着させる。さらに、前記桁パイプ7b,7bの後部に、側面視において略々三角形状をした第二軸受部材25,25をそれぞれ固着させて、上半身ボトム7は構成される。なお、前記第二軸受部材25,25には、左右方向の軸心を持つ空孔部25a,25a,・・・が穿たれている。また、第二軸受部25,25の取付け位置は、前記作動部4のアクチュエーター13の伸縮可能範囲と、背上げリンク5,5により上半身ボトム7が最大限背上げされたときの、所望する最大傾斜角度により定めている。
Next, the upper body bottom 7 will be described.
Upper body bottom 7 has a substantially rectangular frame body 7a in plan view, the longitudinal direction of the girder pipe 7b connecting the front side and the rear side of the frame body 7a, 7b is, the movable carriage in a plan view The part 3 is fixed so as to be located slightly inside the main girders 3a, 3a. The first bearing members 24, 24 having holes 24a, 24a,... In the vicinity of the rear side girders 7b, 7b are attached to the holes 24a, 24a,. Are fixed to each other so as to be positioned at the rear lower side of the frame 7a and the axial centers thereof coincide with each other. Furthermore, the upper body bottom 7 is configured by fixing second bearing members 25 and 25 each having a substantially triangular shape in a side view to the rear portions of the beam pipes 7b and 7b. The second bearing members 25, 25 are provided with holes 25a, 25a,... Having left and right axial centers. The mounting positions of the second bearing portions 25 and 25 are the maximum desired when the upper body bottom 7 is raised up to the maximum extent by the range in which the actuator 13 of the operating portion 4 can be expanded and contracted and the back raising links 5 and 5. It is determined by the inclination angle.

次に、前記基台部2と移動台部3との間に構成される背上げリンク5,5について説明する。
26,26は側面視において略々三角形状をした第一杆体である。該第一杆体26,26の略々中央部には空孔部26a,26aが穿たれている。この第一杆体26,26の空孔部26a,26aを前記移動台部3の主桁3a,3aの前部に軸材27,27にて、該第一杆体26,26が前記移動台部3の主桁3a,3a内側に配設されるように枢結させる。そして、この第一杆体26,26の上部に位置する頂点近傍と前記上半身ボトム7の第一軸受部材24,24の空孔部24a,24a,・・・とを軸材28,28にて枢結させる。
29,29は水平面と垂直面を持つ第二杆体である。該第二杆体29,29の水平面は略々矩形状しており、垂直面は略々三角形状をしている。該第二杆体29,29の垂直面の前下部に位置する頂点近傍には左右内側方向へ切替ピン29a,29aが突設され、水平面の前部には支持部材29b,29bが取付けられている。この第二杆体29,29の垂直面の後部に位置する頂点近傍と前記上半身ボトム7の第二軸受部材25,25の空孔部25a,25a,・・・とを軸材30,30にて枢結させる。
Next, the back raising links 5 and 5 comprised between the said base part 2 and the movement stand part 3 are demonstrated.
Reference numerals 26 and 26 denote first housings having a substantially triangular shape in a side view. Hole portions 26a and 26a are formed in substantially the center portions of the first casings 26 and 26, respectively. The hole portions 26a, 26a of the first housings 26, 26 are made shaft members 27, 27 in front of the main girders 3a, 3a of the moving table portion 3, and the first housings 26, 26 are moved to the moving table portion. The main girder 3a is pivoted so as to be disposed inside the main girder 3a. Then, the vicinity of the apex located at the upper part of the first housings 26, 26 and the hole portions 24a, 24a, ... of the first bearing members 24, 24 of the upper body bottom 7 are pivoted by shaft members 28, 28. Tie.
Reference numerals 29 and 29 denote second casings having a horizontal plane and a vertical plane. The horizontal surfaces of the second casings 29 and 29 are substantially rectangular, and the vertical plane is substantially triangular. In the vicinity of the apex located at the front lower part of the vertical surface of the second housing 29, 29, switching pins 29a, 29a project in the left-right inner direction, and support members 29b, 29b are attached to the front part of the horizontal plane. . The vicinity of the apex located at the rear part of the vertical surface of the second housing 29, 29 and the hole portions 25a, 25a,... Of the second bearing members 25, 25 of the upper body bottom 7 are made by shaft members 30, 30. To be pivoted.

31,31は第三杆体である。この第三杆体31,31の前部と前記基台部2の補強パイプ2gに固着した軸受部材32,32とを軸材33,33にて枢結させる。そして、第三杆体31,31の後部と前記第ニ杆体29,29の垂直面の前部に位置する頂点近傍とを軸材34,34にて枢結させる。然る後、第三杆体31,31の略々中間部と第四杆体35,35の前部とを軸材36,36にて枢結させる。そして、第四杆体35,35の後部と前記第一杆体26,26の下部に位置する頂点近傍とを軸材37,37にて枢結させて、左右一対の背上げリンク5,5は構成される。
なお、前記左右の第一杆体26,26を連結パイプ38にて互いに連結させ、そして、前記左右の第三杆体31,31も同じく連結パイプ39にて連結させている。これは、左右の背上げリンク5,5を均等かつ同期的に作動させ、上半身ボトム7が捩れること等を防止するためである。また、上半身ボトム7が水平状態にあるときに、該上半身ボトム7を前記第二杆体29,29の支持部材29b,29bとともに支持する支持具40,40が前記基台部2のレール桁2a,2aの前部上面に固着されている。さらに、前記上半身ボトム7と下半身ボトム6の上面には、図示していないが、マット部材が配設される。
31 and 31 are the third housings. The front portions of the third casings 31 and 31 and the bearing members 32 and 32 fixed to the reinforcing pipe 2g of the base portion 2 are pivotally connected by shaft members 33 and 33. Then, the rear portions of the third casings 31, 31 and the apex vicinity located at the front portions of the vertical surfaces of the second casings 29, 29 are pivotally connected by shaft members 34, 34. Thereafter, the substantially middle part of the third casing 31, 31 and the front part of the fourth casing 35, 35 are pivoted by the shaft members 36, 36. A pair of left and right back-up links 5 and 5 are configured by pivotally connecting the rear portions of the fourth casings 35 and 35 and the apex vicinity located below the first casings 26 and 26 with shaft members 37 and 37. Is done.
The left and right first casings 26 and 26 are connected to each other by a connecting pipe 38, and the left and right third casings 31 and 31 are also connected to each other by a connecting pipe 39. This is to prevent the upper body bottom 7 from being twisted by operating the left and right back raising links 5 and 5 equally and synchronously. Further, when the upper body bottom 7 is in a horizontal state, the support members 40 and 40 for supporting the upper body bottom 7 together with the support members 29b and 29b of the second casings 29 and 29 are provided as rail girders 2a and It is fixed to the upper surface of the front part of 2a. Further, a mat member (not shown) is disposed on the upper surfaces of the upper body bottom 7 and the lower body bottom 6.

以上のように構成されたベッド1の背上げリンク5,5による上半身ボトム7の起伏動作について説明する。なお、ベッド1の初期状態は上半身ボトム7が水平な状態とする。   The undulation operation of the upper body bottom 7 by the back raising links 5 and 5 of the bed 1 configured as described above will be described. The initial state of the bed 1 is such that the upper body bottom 7 is horizontal.

まず、背上げリンク5,5を作動させて、上半身ボトム7を背上げするには、リモコンスイッチ(図示省略)を操作して、アクチュエーター13を縮める。すると、移動台部3が前方向へ移動するとともに、背上げリンク5,5の第一杆体26,26も前方向へ移動する。これに伴って、第四杆体35,35が軸材33,33を中心に第三杆体31,31を前上方へ回動させ、第三杆体31,31の後部に枢結した第二杆体29,29の支持部材29b,29bを上半身ボトム7の第二の背上げ支点として、軸材28,28を中心に上半身ボトム7を回動させ、上半身ボトム7は背上げされる。また、この動きに伴って、第一杆体26,26も軸材27,27を中心に回動し、背上げリンク5,5は回動していく。
さらに、アクチュエーター13を縮めて、上半身ボトム7を背上げしていくと、背上げリンク5,5の第二杆体29,29に取付けた切替ピン29a,29aが第三杆体31,31に接当する。これにより、これ以降は、第二杆体29,29と第三杆体31,31が一つの杆体として軸材33,33を中心に前上方へ回動するようになる。また、背上げ支点が、第二の背上げ支点から、上半身ボトム7の回動中心である軸材28,28に近い第一の背上げ支点である上半身ボトム7の第二軸受部材25,25に切り替わり、以降、この第一の背上げ支点にて、上半身ボトム7は背上げされる(第6図の(a)図及び(b)図参照)。そして、この第一の背上げ支点である上半身ボトム7の第二軸受部材25,25の取付け位置は、所望する上半身ボトム7の最大傾斜角度により定められており、これにて、上半身ボトム7を所望する最大傾斜角度まで背上げすることができる。
First, in order to operate the back raising links 5 and 5 to raise the upper body bottom 7, the actuator 13 is contracted by operating a remote control switch (not shown). Then, the moving base part 3 moves in the forward direction, and the first housings 26 and 26 of the back raising links 5 and 5 also move in the forward direction . Accordingly, the fourth casings 35, 35 rotate the third casings 31, 31 forward and upward about the shaft members 33, 33, and are pivotally connected to the rear portions of the third casings 31, 31. , 29 are used as the second back raising fulcrum of the upper body bottom 7, the upper body bottom 7 is rotated around the shaft members 28, 28, and the upper body bottom 7 is raised up. Further, along with this movement, the first casings 26 and 26 are also rotated around the shaft members 27 and 27, and the back raising links 5 and 5 are rotated.
Further, when the actuator 13 is contracted and the upper body bottom 7 is raised back, the switching pins 29a, 29a attached to the second housings 29, 29 of the back raising links 5, 5 are brought into contact with the third housings 31, 31. To do. Thereby, after this, the 2nd housings 29 and 29 and the 3rd housings 31 and 31 turn to the front upper direction centering on the shaft members 33 and 33 as one housing. Further, the second bearing members 25, 25 of the upper body bottom 7, which is the first back raising fulcrum, which is the first back raising fulcrum close to the shafts 28, 28 that are the rotation centers of the upper body bottom 7 from the second back fulcrum. Thereafter, the upper body bottom 7 is raised at the first back raising fulcrum (see FIGS. 6A and 6B). And the attachment position of the 2nd bearing members 25 and 25 of the upper body bottom 7 which is this 1st back raising fulcrum is defined by the maximum inclination angle of the upper body bottom 7 desired, and, thereby, the upper body bottom 7 is attached. The back can be raised to the desired maximum inclination angle.

また、逆に上半身ボトム7を背上げした状態から水平状態に戻すには、リモコンスイッチ(図示省略)を操作して、アクチュエーター13を伸長させる。すると、移動台部3が後方向へ移動するとともに、背上げリンク5,5の第一杆体26,26も後方向へ移動する。これに伴って、背上げリンク5,5が回動しながら、上半身ボトム7は軸材28,28を中心に、水平状態に向けて回動する。そして、上半身ボトム7が所定の傾斜角度に達すると、背上げリンク5,5の第二杆体29,29の切替ピン29a,29aと第三杆体31,31との接触が解除され、背上げ支点が第一の背上げ支点から、上半身ボトム7の回動中心である軸材28,28から遠い第二の背上げ支点に切り替わる。そして、これ以降は、この第二の背上げ支点が上半身ボトム7の背上げ支点となり、上半身ボトム7は水平となるまで回動する。
すなわち、このベッド1の背上げリンク5,5は、第7図に示すように、点Xを中心に棒部材Yを回動させる際に、点Xに近い押上げ点Vと、遠い押上げ点Wで同量だけ押上げた場合、押上げ量Zは同量であっても、棒部材Yの回動量は、点Xに近い押上げ点Vで押し上げる方が、より大きくなる現象を利用したものである。
On the other hand, in order to return the upper body bottom 7 to the horizontal state from the back-up state, the remote controller switch (not shown) is operated to extend the actuator 13. Then, the moving base part 3 moves backward, and the first casings 26, 26 of the back raising links 5, 5 also move backward . Along with this, while the back raising links 5 and 5 rotate, the upper body bottom 7 rotates about the shaft members 28 and 28 toward the horizontal state. When the upper body bottom 7 reaches a predetermined inclination angle, the contact between the switching pins 29a, 29a of the second housings 29, 29 of the back raising links 5, 5 and the third housings 31, 31 is released, and the back raising fulcrum Is switched from the first back-lifting fulcrum to the second back-raising fulcrum far from the shaft members 28, 28 that are the rotation center of the upper body bottom 7. Thereafter, the second back raising fulcrum becomes the back raising fulcrum of the upper body bottom 7, and the upper body bottom 7 rotates until it becomes horizontal.
That is, as shown in FIG. 7, the back raising links 5 and 5 of the bed 1 have a push-up point V close to the point X and a far push-up when the bar member Y is rotated around the point X. When the same amount is pushed up at the point W, even if the amount Z is pushed up, the amount of rotation of the bar member Y becomes larger when pushed up at the pushing point V close to the point X. It is a thing.

このようにベッド1の背上げリンク5,5を構成したことで、上記背上げリンク5,5の第二杆体29,29を除き、第三杆体31,31と上半身ボトム7の第二軸受部材25,25を枢結した場合と比べて、アクチュエーター13の伸縮量(イ)に対しての、上半身ボトム7が水平状態から背上げされる量を少なくすることができる。(第6図の(a)及び第8図参照)。すなわち、この間の上半身ボトム7の起伏速度を遅くすることができる。したがって、特に上半身ボトム7を背上げしていた状態から水平状態に戻すときに、上半身ボトム7が所定の傾斜角度に達した時点から、上半身ボトム7の起伏速度を遅くでき、上半身ボトム7が水平状態に戻った際に、水平状態で上半身ボトム7を支持する支持具40,40と上半身ボトム7との接触の衝撃を弱めることができる。これにより、利用者にその衝撃を実質的に感じさせないようにできる。また、利用者にまもなく上半身ボトム7が停止することを知らせることができる。
また、上半身ボトム7の背上げ中に、上半身ボトム7の背上げ支点を、第二の背上げ支点(背上げリンク5,5の第二杆体29,29の支持部材29b,29b)から、第一の背上げ支点(上半身ボトム7の第二軸受部材25,25)へ切り替わるようにしているので、上半身ボトム7を所望する最大傾斜角度まで背上げ可能とすることができる。
したがって、前後方向に直動駆動する作動部4により作動する簡潔な機構の背上げリンク5,5により、所望する上半身ボトム7の最大傾斜角度を確保しつつ、上半身ボトム7が水平状態に近づくにつれて、上半身ボトム7の起伏速度を遅くすることができる。
By configuring the back raising links 5, 5 of the bed 1 in this way, the second housing members 31, 31 and the second bearing members of the upper body bottom 7 are excluded except for the second housings 29, 29 of the back raising links 5, 5. Compared with the case where 25 and 25 are connected, the amount by which the upper body bottom 7 is raised from the horizontal state with respect to the expansion / contraction amount (A) of the actuator 13 can be reduced. (Refer to FIG. 6 (a) and FIG. 8). That is, the undulation speed of the upper body bottom 7 during this period can be reduced. Therefore, when the upper body bottom 7 reaches a predetermined inclination angle, particularly when the upper body bottom 7 is returned to the horizontal state, the undulation speed of the upper body bottom 7 can be reduced, and the upper body bottom 7 When returning to the state, it is possible to weaken the impact of the contact between the upper body bottom 7 and the support members 40 , 40 that support the upper body bottom 7 in the horizontal state. Thereby, it is possible to prevent the user from substantially feeling the impact. In addition, the user can be informed that the upper body bottom 7 will stop soon.
Further, during the raising of the upper body bottom 7, the back raising fulcrum of the upper body bottom 7 is moved from the second back raising fulcrum (support members 29b, 29b of the second housings 29, 29 of the back raising links 5, 5). Since it switches to one back raising fulcrum (the second bearing members 25, 25 of the upper body bottom 7), the upper body bottom 7 can be raised up to a desired maximum inclination angle.
Therefore, as the upper body bottom 7 approaches the horizontal state while the desired maximum inclination angle of the upper body bottom 7 is secured by the back raising links 5 and 5 of a simple mechanism that is operated by the operation unit 4 that is linearly driven in the front-rear direction. The undulation speed of the upper body bottom 7 can be reduced.

また、背上げリンク5,5の第三杆体31,31と上半身ボトム7の第二軸受部材25,25との間に、第二杆体29,29を配設したことで、第9図に示したように、上半身ボトム7は第二杆体29,29の水平面と第三杆体31,31が接触するまでの範囲内において、アクチュエーター13の伸縮に関係なく起伏可能となっている。これによると、誤って上半身ボトム7と基台部2との間に異物を挟み込んでも、上半身ボトム7、基台部2、背上げリンク5,5等が破損することを極力防止できる。   Further, the second housings 29 and 29 are disposed between the third housings 31 and 31 of the back raising links 5 and 5 and the second bearing members 25 and 25 of the upper body bottom 7, as shown in FIG. As described above, the upper body bottom 7 can be raised and lowered irrespective of the expansion and contraction of the actuator 13 within a range until the horizontal surfaces of the second casings 29 and 29 and the third casings 31 and 31 come into contact with each other. According to this, even if a foreign object is caught between the upper body bottom 7 and the base part 2 by mistake, the upper body bottom 7, the base part 2, the back raising links 5, 5 and the like can be prevented from being damaged as much as possible.

なお、上半身ボトム7の水平状態に近い状態での起伏速度をさらに遅くするには、第一の背上げ支点(上半身ボトム7の第二軸受部材25,25)から前方へ向かって第二の背上げ支点(背上げリンク5,5の第二杆体29,29の支持部材29b,29b)を離間させる距離(ロ)を大きくすれば良い(第6図の(a)図参照)。また、第二杆体29,29の切替ピン29a,29aと第三杆体31,31との接当により上半身ボトム7の背上げ支点が切り替わるので、両者が接当するタイミングを調節することで、起伏速度を遅くした状態での、上半身ボトム7の回動範囲を調節することができる。
また、本実施例の背上げリンク5,5は、上半身ボトム7を背上げする際に、上半身ボトム7の背上げ支点を、上半身ボトム7の回動中心である軸材28,28に接近する方向へ一度だけ切り替えるようにしているが、図示してはいないが、背上げリンク5,5の第二杆体29,29と第三杆体31,31との間に新たに杆体を介在させるようにし、上半身ボトム7が背上げされるに連れて、上半身ボトム7の背上げ支点を、上半身ボトム7の回動中心である軸材28,28に接近する方向へ複数回切り替えるようにしても良い。これによると、上半身ボトム7を背上げしていた状態から水平状態へ戻すときに、上半身ボトム7の起伏速度を段階的に遅くするようにできる。
In addition, in order to further slow the undulation speed in the state close to the horizontal state of the upper body bottom 7, the second back toward the front from the first back raising fulcrum (the second bearing members 25, 25 of the upper body bottom 7). What is necessary is just to enlarge the distance (b) which separates the raising fulcrum (support members 29b, 29b of the second housings 29, 29 of the back raising links 5, 5) (see FIG. 6 (a)). Moreover, since the back raising fulcrum of the upper body bottom 7 is switched by the contact between the switching pins 29a, 29a of the second housings 29, 29 and the third housings 31, 31, the undulation can be achieved by adjusting the timing of contact between the two. The rotation range of the upper body bottom 7 with the speed reduced can be adjusted.
Further, when raising the upper body bottom 7, the back raising links 5, 5 of the present embodiment bring the back raising fulcrum of the upper body bottom 7 closer to the shaft members 28, 28 that are the rotation center of the upper body bottom 7. Although it is switched only once in the direction, although not shown, a new housing is interposed between the second housings 29 and 29 of the back raising links 5 and 5 and the third housings 31 and 31. As the upper body bottom 7 is raised, the back lifting fulcrum of the upper body bottom 7 may be switched a plurality of times in the direction approaching the shaft members 28 and 28 that are the rotation centers of the upper body bottom 7. According to this, when the upper body bottom 7 is returned to the horizontal state from the state in which the upper body bottom 7 is raised, the undulation speed of the upper body bottom 7 can be decreased stepwise.

さらに、第10図に示したように、上記背上げリンク5,5の第三杆体31,31と第二杆体29,29を一体的に成形したような、一つの杆体の後部にもう一つの杆体を一体的に具備させた形状の側面視において略々へ字状の杆体41を構成する。そして、杆体41の曲げ部と後部に係止め軸41a,41bを固着する。然る後、点Pを中心に前記杆体41を回動させると、上記上半身ボトム7に当たる部材の棒体42は、曲げ部の係止め軸41aを背上げ支点として、点Qを中心に回動されるとともに、水平軸上を移動する。さらに、杆体41を回動させると、曲げ部の係止め軸41aから後部の係止め軸41bに背上げ支点が切り替わり、棒体42は回動されるようになる。したがって、前記杆体41を用いても、上記背上げリンク5,5の第三杆体31,31と第二杆体29,29とを用いた場合と同様の作用と効果を示す背上げリンクを構成することができる。なお、前記杆体41は2つの杆体を一体的に成形した形状とし、背上げ支点を2箇所有するものとしているが、図示してはいないが、複数の杆体を一体的に成形したものとし、背上げ支点となる箇所を2箇所以上としても良い。このようにすると、段階的に起伏速度を切り替えることができるようになる。 Furthermore, as shown in FIG. 10, another rear portion of one housing is formed such that the third housings 31, 31 and the second housings 29, 29 of the back raising links 5, 5 are integrally formed . A substantially 41-shaped housing 41 is formed in a side view of the shape integrally provided with the housing. Then, the locking shafts 41 a and 41 b are fixed to the bent portion and the rear portion of the housing 41. Thereafter, when the casing 41 is rotated around the point P, the rod 42 of the member that contacts the upper body bottom 7 rotates around the point Q with the locking shaft 41a of the bent portion as a back-up fulcrum. And move on the horizontal axis . Further, when the housing 41 is rotated, the back support fulcrum is switched from the locking shaft 41a of the bent portion to the locking shaft 41b of the rear portion, and the rod body 42 is rotated. Therefore, even if the said housing 41 is used, the back raising link which shows the effect | action and effect similar to the case where the 3rd housings 31 and 31 and the 2nd housings 29 and 29 of the said back raising links 5 and 5 are comprised is comprised. be able to. The casing 41 has a shape in which two casings are integrally molded and has two back raising fulcrums. Although not shown, it is assumed that a plurality of casings are integrally molded, It is good also as two or more places used as a raising fulcrum. In this way, the undulation speed can be switched in stages.

また、第8図に示す構成のベッドにおいても、上半身ボトム7が水平状態に近づくにつれて、上半身ボトム7の起伏速度を遅くすることが可能である。この背上げ制御は、少なくとも上半身ボトム7を背上げした状態から水平状態へ戻す際に、上半身ボトム7の傾斜角度に応じて、動力源であるアクチュエーター13に印加する電流の電圧あるいは周波数を小さくするようにし、アクチュエーター13の伸縮速度を制御することにより、上半身ボトム7の起伏速度を制御するものである。この背上げ制御を実施するための一例を図面に基づいて説明する。第11図は背上げ制御回路のフローを示す説明図である。第12図は背上げ制御による背上げの様子を示す説明図である。 In the bed having the configuration shown in FIG. 8, the undulation speed of the upper body bottom 7 can be reduced as the upper body bottom 7 approaches the horizontal state. This back raising control reduces the voltage or frequency of the current applied to the actuator 13 that is a power source according to the inclination angle of the upper body bottom 7 when at least the upper body bottom 7 is returned to the horizontal state from the state in which the back is raised. In this way, the undulation speed of the upper body bottom 7 is controlled by controlling the expansion / contraction speed of the actuator 13. An example for carrying out the back raising control will be described with reference to the drawings. FIG. 11 is an explanatory diagram showing the flow of the back raising control circuit. FIG. 12 is an explanatory view showing a state of back raising by back raising control.

まず、上半身ボトム7に角度センサー43を配設する。そして、角度センサー43からの出力を、シーケンサー44に入力するように結線する。そして、シーケンサー44からの出力を、インバーター45に入力するように結線する。また、このインバーター45と電源を結線するとともに、アクチュエーター13とも結線し、背上げ制御回路46を構成させる(第11図参照)。
なお、シーケンサー44は、角度センサー43からの入力値に応じた電流の周波数の値を記憶しており、その値をインバーター45に伝達する役目を果たすものである。また、インバーター45は、電源から印加される電流の周波数をシーケンサー44から入力された周波数に変換して、アクチュエーター13に電流を印加する役目を果たすものである。
First, the angle sensor 43 is disposed on the upper body bottom 7. Then, the output from the angle sensor 43 is connected so as to be input to the sequencer 44. Then, the output from the sequencer 44 is connected so as to be input to the inverter 45. Further, the inverter 45 and the power source are connected, and the actuator 13 is also connected to constitute a back raising control circuit 46 (see FIG. 11).
The sequencer 44 stores a current frequency value corresponding to an input value from the angle sensor 43, and plays a role of transmitting the value to the inverter 45. The inverter 45 converts the frequency of the current applied from the power source into the frequency input from the sequencer 44 and applies the current to the actuator 13.

この背上げ制御回路46によると、第12図の(a)図に示すように、アクチュエーター13が一定時間(t〜t=tα)に伸長する量を徐々に短くしていくことができ、上半身ボトム7が水平状態に近づくにつれて、上半身ボトム7の起伏速度を遅くしていくことができる。これにより、第12図の(b)図に示すように、アクチュエーター13を一定速度(t〜t10=tβ)で伸長させ、上半身ボトム7が水平状態に近づくにつれて、上半身ボトム7の起伏速度が速くなる場合に比べて、上半身ボトム7が水平状態に戻ったときに、水平状態で上半身ボトム7を支持する支持具40,40と上半身ボトム7との接触の衝撃を弱めることができる。これにより、利用者にその衝撃を実質的に感じさせないようにできる。また、利用者にまもなく上半身ボトム7が停止することを知らせることができる。 According to the back raising control circuit 46, as shown in FIG. 12 (a), the amount by which the actuator 13 extends for a certain time (t 1 to t 5 = t α ) can be gradually shortened. The undulation speed of the upper body bottom 7 can be reduced as the upper body bottom 7 approaches the horizontal state. As a result, as shown in FIG. 12B, the actuator 13 is extended at a constant speed (t 6 to t 10 = t β ), and as the upper body bottom 7 approaches the horizontal state, the upper body bottom 7 rises and falls. Compared with the case where the speed is increased, when the upper body bottom 7 returns to the horizontal state, the impact of the contact between the upper body bottom 7 and the support members 40 and 40 that support the upper body bottom 7 in the horizontal state can be weakened. Thereby, it is possible to prevent the user from substantially feeling the impact. In addition, the user can be informed that the upper body bottom 7 will stop soon.

なお、図示してはいないが、例えば、リミットスイッチを上半身ボトム7に、上半身ボトム7が水平状態から所望の傾斜角度に達したときに、該リミットスイッチと第一杆体26との接触がとけ、リミットスイッチの接点がOFFされるように配設させる。そして、リミットスイッチがONの状態の方がOFFの状態よりも、アクチュエーター13に印加される電圧が小さくなるようにして、アクチュエーター13の伸縮速度を遅くするように背上げ制御回路を構成する。すなわち、リミットスイッチのONとOFFの状態により、アクチュエーター13の伸縮速度を二段階とする。このようにしても、上半身ボトム7が水平状態に近づくにつれて、上半身ボトム7の起伏速度を遅くすることができる。また、この場合においては、角度センサー43とシーケンサー44、インバーター45を除くことができる。   Although not shown, for example, when the limit switch is on the upper body bottom 7 and the upper body bottom 7 reaches a desired inclination angle from the horizontal state, the limit switch and the first housing 26 are contacted, It arrange | positions so that the contact of a limit switch may be turned off. Then, the back-up control circuit is configured so that the voltage applied to the actuator 13 is smaller when the limit switch is ON than when the limit switch is OFF, and the expansion / contraction speed of the actuator 13 is decreased. That is, the extension / contraction speed of the actuator 13 is set to two stages depending on the ON / OFF state of the limit switch. Even in this case, the undulation speed of the upper body bottom 7 can be reduced as the upper body bottom 7 approaches the horizontal state. In this case, the angle sensor 43, the sequencer 44, and the inverter 45 can be omitted.

また、上記した背上げ制御は、作動部の動力源にモーターを用いた場合でも、同様の制御を行うことができることは言うまでもない。   Needless to say, the above-described back raising control can be performed even when a motor is used as the power source of the operating unit.

本実施例では、背上げ可能なベッドを示しており、下半身ボトム6が一体的に構成されたものについて説明している。しかし、上述した背上げリンク又は背上げ制御にて起伏可能な上半身ボトム7を備え、かつ下半身ボトム6を、例えば腰受ボトムと脚受ボトムに分割し、それぞれを連動させて揺動するように構成すると、さらに快適に療養することができるベッドとして構成することができる。   In the present embodiment, a bed that can be raised is shown, and the lower body bottom 6 is integrally formed. However, the upper body bottom 7 that can be raised and lowered by the back raising link or the back raising control described above is provided, and the lower body bottom 6 is divided into, for example, a waist receiving bottom and a leg receiving bottom, and swings in conjunction with each other. If comprised, it can be comprised as a bed which can be treated more comfortably.

ベッドを示す全体平面図。(実施例1)The whole top view showing a bed. Example 1 ベッドを示す全体側面図。(実施例1)The whole side view showing a bed. Example 1 ベッドを示す部分断面平面図。(実施例1)The fragmentary sectional top view which shows a bed. Example 1 第3図におけるA−A断面図。(実施例1)AA sectional drawing in FIG. Example 1 動力源にモーターを用いた作動部の構成を示す説明図。(実施例1) (a)モーターを用いた作動部の構成を示す説明図。 (b)モーターを作動させた様子を示す説明図。Explanatory drawing which shows the structure of the action | operation part which used the motor for the motive power source. (Example 1) (a) Explanatory drawing which shows the structure of the action | operation part using a motor. (B) Explanatory drawing which shows a mode that the motor was operated. ベッドの背上げの様子を示す説明図。(実施例1) (a)背上げ支点が切り替わる前の背上げの様子を示す説明図。 (b)最大限背上げされた様子を示す説明図。Explanatory drawing which shows the mode of raising the back of a bed. (Example 1) (a) Explanatory drawing which shows the mode of the back raising before the back raising fulcrum switches. (B) Explanatory drawing which shows a mode that it was raised up to the maximum. 背上げリンクの原理を示す説明図。(実施例1) (a)点Vを押上げ支点として、棒部材Yを回動させた様子を示す説明図。 (b)点Wを押上げ支点として、棒部材Yを回動させた様子を示す説明図。Explanatory drawing which shows the principle of a back raising link. (Example 1) (a) Explanatory drawing which shows a mode that the bar member Y was rotated by making the point V into a raising fulcrum. (B) Explanatory drawing which shows a mode that the bar member Y was rotated by making the point W into a pushing fulcrum. 背上げ支点を切り替えない場合の背上げの様子を示す説明図。(実施例1)Explanatory drawing which shows the mode of the back raising when not changing a back raising fulcrum. Example 1 上半身ボトムの起伏を示す説明図。(実施例1)Explanatory drawing which shows the undulation of the upper body bottom. Example 1 別の背上げリンクの要部を示す説明図。(実施例1) (a)背上げリンクの要部の構成を示す説明図。 (b)背上げ支点が切り替わる前の背上げの様子を示す説明図。 (c)背上げ支点が切り替わった後の背上げの様子を示す説明図。Explanatory drawing which shows the principal part of another back raising link. (Example 1) (a) Explanatory drawing which shows the structure of the principal part of a back raising link. (B) Explanatory drawing which shows the mode of the back raising before a back raising fulcrum switches. (C) Explanatory drawing which shows the mode of the back raising after the back raising fulcrum switches. 背上げ制御回路のフローを示す説明図。(実施例2)Explanatory drawing which shows the flow of a back raising control circuit. (Example 2) 背上げ制御による背上げの様子を示す説明図。(実施例2) (a)アクチュエーターの伸縮速度を変化させたときの上半身ボトムの軌跡を示す説明図。 (b)アクチュエーターの伸縮速度を一定としたときの上半身ボトムの軌跡を示す説明図。Explanatory drawing which shows the mode of the back raising by back raising control. (Example 2) (a) Explanatory drawing which shows the locus | trajectory of the upper body bottom when changing the expansion-contraction speed of an actuator. (B) Explanatory drawing which shows the locus | trajectory of the upper body bottom when the expansion-contraction speed of an actuator is made constant.

符号の説明Explanation of symbols

1 ベッド
4 作動部
5 背上げリンク
7 上半身ボトム
1 Bed 4 Actuator 5 Back link 7 Upper body bottom

Claims (1)

基台部に沿って前後に移動する移動台部上に下半身ボトムを取り付ける一方、該下半身ボトムに連設するように上半身ボトムを設けるに、該上半身ボトムは前記移動台部の前後移動に連動して作動する背上げリンクを介して起伏するよう取り付けるに、該背上げリンクは、前記上半身ボトムの下半身ボトム側の端部に一端部を支承するとともに前記移動台部に中間部を支承する第一杆体と、前記上半身ボトムの中間部に一端部を回動自在に支承した第二杆体と、該第二杆体の他端部と前記基台部の頭側にそれぞれ回動自在に支承した第三杆体と、前記第一杆体の他端部と前記第三杆体の中間部にそれぞれ回動自在に支承する第四杆体からなり、前記第二杆体には切替ピンを設けることで少なくとも前記第二杆体と前記第三杆体が直線状態から該切替ピンに接当するまでの範囲で回動自在とし、前記移動台部が足側に位置しているときには前記第二杆体が前記上半身ボトムに沿った状態で前記下半身ボトムと上半身ボトムが水平状態となり、前記移動台部の頭側への移動に伴い前記第一杆体を介して前記第四杆体が前記第三杆体を上方回動させる一方、前記第二杆体は前記上半身ボトムに沿った状態を維持しながら前記切替ピンに前記第三杆体が接するまで回動し前記上半身ボトムが前記第二杆体と前記第三杆体の支承部を第二の背上げ支点として起立した後、前記切替ピンにより前記第二杆体と第三杆体が一定の屈曲状態のまま上方回動され、前記上半身ボトムが前記第二杆体との支承部を第一の背上げ支点として起立するよう構成し、このときの第一の背上げ支点よりも前記第二の背上げ支点を前記上半身ボトムの頭部側に位置するように構成したことを特徴とするベッド。 A lower body bottom is mounted on a movable table part that moves back and forth along the base part, while an upper body bottom is provided so as to be connected to the lower body bottom, the upper body bottom is interlocked with the longitudinal movement of the movable table part. The back raising link is attached to the end of the lower body bottom side of the upper body bottom and supports the intermediate part to the moving base part. A housing, a second housing having one end pivotably supported on an intermediate portion of the upper body bottom, and a third housing pivotally supported on the other end of the second housing and the head side of the base portion, respectively. And a fourth housing that is rotatably supported on the other end of the first housing and an intermediate portion of the third housing, and at least the second housing is provided with a switching pin on the second housing. And the third housing from a straight state The lower body bottom and the upper body bottom are in a horizontal state in a state where the second housing is along the upper body bottom when the moving base portion is positioned on the foot side. With the movement of the moving base portion to the head side, the fourth housing rotates the third housing upward through the first housing, while the second housing is in a state along the upper body bottom. The upper body bottom is turned up with the support part of the second and third housings as the second back-lifting fulcrum, and the switching body is moved by the switching pins. The second housing and the third housing are rotated upward in a certain bent state, and the upper body bottom is configured to stand up with the support portion with the second housing as the first back-lifting fulcrum. 2nd than the back lifting fulcrum Bed, characterized in that the back-raising fulcrum configured to be positioned on the head side of the upper body bottom.
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CN109875779A (en) * 2019-03-06 2019-06-14 张瑶 It is a kind of to be convenient for entourage's rest type paediatrics hospital bed for medical treatment

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