JP2001037820A - Method for controlling interaction between back and knee on bed and the like - Google Patents

Method for controlling interaction between back and knee on bed and the like

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Publication number
JP2001037820A
JP2001037820A JP11217835A JP21783599A JP2001037820A JP 2001037820 A JP2001037820 A JP 2001037820A JP 11217835 A JP11217835 A JP 11217835A JP 21783599 A JP21783599 A JP 21783599A JP 2001037820 A JP2001037820 A JP 2001037820A
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Japan
Prior art keywords
knee
bottom
back
bed
operation
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Pending
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JP11217835A
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Japanese (ja)
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Katsuyoshi Nomura
克芳 野村
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Paramount Bed Co Ltd
パラマウントベッド株式会社
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Priority to JP11217835A priority Critical patent/JP2001037820A/en
Publication of JP2001037820A publication Critical patent/JP2001037820A/en
Application status is Pending legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To vary the timing of back-raising action and the timing of knee- raising action and prevent the angle between a back bottom and a knee bottom from decreasing more than necessary. SOLUTION: Operating power is supplied to the motors of the direct-moving drive mechanisms for a back-raising mechanism and a knee-raising mechanism in response to an operating command applied to a gatch (for raising the back and also for raising the knees) from a remote-control switch or an operation panel, and the inclined conditions of a back bottom 2a and a knee bottom 2c are grasped from detection signals generated by a means for detecting the amounts of rotation of the motors. When the knee bottom 2c has reached an angle of 20 deg. to 30 deg., the supply of operating power to the motor of the direct- moving drive mechanism for the knee-raising mechanism is shut off, and a gatching command is continued, whereby power is supplied to the motor of the direct-moving drive mechanism for the knee-raising mechanism so that the motor is activated inversely this time to lower the knee bottom 2c.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、背上げや、膝上げが可能ないわゆるギャッチベッドにおいて、背上げ動作と膝上げ動作のタイミングを変えたり、背ボトムと膝ボトム間の角度が必要以上に狭まらないように構成することで、より使い勝手のよいベッドとした、ベッド等における背膝連動制御方法に関するものである。 The present invention relates to is, and the back-up, in a knee-up capable of so-called Gyatchibeddo, changing the timing of the back lifting operation and the knee-up operation, the narrow than necessary angle between the back bottom and the knee bottom with the configuration as not Mara was more user-friendly bed, to a back knee interlock control method in the bed or the like.

【0002】 [0002]

【従来の技術】近年、ベッドは、背上げや、膝上げが可能ないわゆるギャッチベッド、そして、昨今では、この他に床部全体が上下するハイローギャッチベッドというように、多機能化の傾向にある。 In recent years, beds, and back lifting, knee lifting that can so Gyatchibeddo And, in these days, so that high-low gap Chi beds entire floor is vertically addition, there is a tendency of multiple functions. さらに、近年の看護婦等の人手不足から省力化のために電動化が進んでいる。 In addition, motorized is progressing for the sake of labor saving from labor shortages, such as the recent nurse.
かかるハイローギャッチベッドによれば、患者が自ら床部起伏機構を操作して、望みどおりの体位をとることができるとしている。 According to the high-low gap Ji bed, the patient operates the own floor undulations mechanism, and that it is possible to take the posture of as desired.

【0003】 [0003]

【発明が解決しようとする課題】ここで問題なのは、背上げ動作に対する膝上げ動作のタイミングである。 [Problems that the Invention is to Solve The problem here is the timing of the knee-up operation against the back lifting action. なぜならば背上げ動作が膝上げ動作に先行して行われると使用者の身体が背ボトムに足長ボトム方向へ押し出されてずれてしまうからである。 The reason is because the body of the user back-up operation is performed prior to the knee-up operation is shifted been pushed to the back bottom to Ashicho bottom direction. これまでの機構では、背上げに対して膝上げの動作開始が遅れるものがあり、ギャッチ時の身体のずれの要因となっていた。 In the previous mechanism, there is a thing that the start of the operation of the knee up against the back-up is delayed, it has been a factor in the shift of the body at the time of Gyatchi. また、背上げと膝上げを行った場合、背ボトムと膝ボトム間の角度が必要以上に狭まらないように(例えば背ボトム−膝ボトム間の角度≧90°)構成する必要がある。 Also, when performing back lifting and knee lifting, so as not Sebamara unnecessarily angle between the back bottom and the knee bottom (e.g. back bottom - an angle ≧ 90 ° between the knee bottom) must be configured. 本発明はこのような背景から提案されたものであって、背上げや、膝上げが可能ないわゆるギャッチベッドにおいて、背上げ動作と膝上げ動作のタイミングを変えたり、背ボトムと膝ボトム間の角度が必要以上に狭まらないように構成することで、より使い勝手のよいベッドとした、ベッド等における背膝連動制御方法を提供することを目的とする。 Be those invention proposed from such a background, and back lifting, the knee lifting is possible so Gyatchibeddo, changing the timing of the back lifting operation and the knee lifting operation, the angle between the back bottom and the knee bottom is that configured not Sebamara than necessary, and to provide a more was easy to use beds, back knee interlock control method in the bed or the like.

【0004】 [0004]

【課題を解決するための手段】前記した課題を解決するために、本発明は、背上げ機構と膝上げ機構とを有し、 To solve the problems mentioned above SUMMARY OF THE INVENTION The present invention has a back lifting mechanism and the knee lifting mechanism,
これら背上げ機構と膝上げ機構とは、それぞれ駆動源を備えて、操作指令により、個々に背に対応する背ボトム、膝に対応する膝ボトムの傾斜調節を行う一方、背ボトムと共に膝ボトムの傾斜調節を行うようにしたベッド等において、前記駆動源は動作量検出手段を有し、背ボトムと共に膝ボトムの傾斜調節を行う際、駆動源における動作量検出手段の検出信号から、背ボトムおよび膝ボトムの調節状態を監視し、膝ボトムが所定の調節状態に達したら膝上げ機構の動作を停止させ、背ボトムと共に膝ボトムの傾斜調節を続行することで、前記膝ボトムを所定の調節状態から、逆に復帰調節させるように膝上げ機構を作動させるようにした。 And these back lifting mechanism and the knee lifting mechanism, provided with a respective driving source, the operation command, back bottom corresponding to the back individually, while performing the tilt adjustment of the knee bottom corresponding to the knee, the knee bottom with the back bottom a bed or the like to perform the inclination adjustment, the drive source has an operation quantity detection means, when performing the tilt adjustment of the knee bottom with the back bottom, from the detection signal of the operation amount detecting means in the drive source, the back bottom and monitoring the adjustment state of the knee bottom, knee bottom stops the operation of the knee lifting mechanism reaches a predetermined adjustment state, by continuing the inclination adjustment of the knee bottom with back bottom, the knee bottom predetermined adjustment condition from and to actuate the knee lifting mechanism, as to return adjusted reversed. 前述のベッド等において、背ボトムと共に膝ボトムの傾斜調節を行う際、背ボトムの調節動作に先立って、膝ボトムの調節動作を行わしめるようにした。 In the foregoing beds etc., when performing the tilt adjustment of the knee bottom with the back bottom, prior to the adjustment operation of the back bottom, and to occupy perform the adjustment operation of the knee bottom. また、前記ベッド等において、背ボトムと共に膝ボトムの傾斜調節を行う際、膝ボトムが所定の調節状態に達したら膝上げ機構の動作を停止させ、 Further, in the bed, etc., when performing the tilt adjustment of the knee bottom with the back bottom, knee bottom stops the operation of the knee lifting mechanism reaches a predetermined adjustment state,
背ボトムと共に膝ボトムの傾斜調節を続行する際に、膝ボトムを所定の調節状態から、逆に復帰調節させるタイミングを調節可能とした。 When continuing the inclination adjustment of the knee bottom with the back bottom, a knee bottom from a predetermined adjustment state, and the adjustable timing for returning adjusted reversed.

【0005】 [0005]

【発明の実施の態様】次に、本発明にかかるベッド等における背膝連動制御方法について、一つの実施の態様を示し、添付の図面を参照しながら以下説明する。 [Aspect of the practice of the invention] Next, the back knee interlock control method in a bed or the like according to the present invention, shows an embodiment of one embodiment will be described below with reference to the accompanying drawings. 図1に示すベッド1では、ボトム2は、背に対応する背ボトム2aと、腰に対応する腰ボトム2bと、腰から膝にかけての膝ボトム2cと、足に対応する足ボトム2dとに分割され、前記背ボトム2aと腰ボトム2b間に、また前記膝ボトム2cと足ボトム2d間にそれぞれ適度な曲率で湾曲するように構成した湾曲ボトム2e,2fを配設している。 In the bed 1 is shown in Fig. 1, bottom 2, divided into a back bottom 2a corresponding to the back, and waist bottom 2b corresponding to the hip, and knee bottom 2c of over the knee from the waist, to the foot bottom 2d corresponding to the foot is, the back bottom 2a and between the waist bottom 2b, also the knee bottom 2c and curved bottom 2e configured to be curved with respective appropriate curvatures between leg bottom 2d, are disposed 2f. そして、図示は省略するが、前記背ボトム2 And, although not shown, the back bottom 2
a裏面に背上げ機構である背上げリンクを当接させる一方、膝ボトム2cと足ボトム2dとの間の湾曲ボトム2 While abut the back lifting link is back lifting mechanism a back surface, the curvature of between knee bottom 2c and the leg bottom section 2d bottom 2
f裏面に、膝上げ機構である膝上げリンクを当接させており、これら背上げリンク、膝上げリンクは、それぞれ駆動手段(図示省略)に接続しており、背上げ、膝上げを行う構造としている。 To f backside, and is abutted against the knee lifting link are knee lifting mechanism, these back lifting link, knee lifting link is performed are connected to each driving means (not shown), back lifting, knee raised structure It is set to.

【0006】前記駆動手段には、例えば電動式の直動駆動機構(図示省略)を適用することができ、例えばリモコンスイッチや付添人、看護婦等が操作するための操作パネルに配した操作スイッチ(図示省略)により、背上げ、膝上げ、およびギャッチ(背上げと共に膝上げ)にかかる操作指令によって、ベッドのフレーム等に設けたコントロールボックスに搭載のコントローラから、動作電力を供給して、それぞれ直動駆動機構を起動し、所望の姿勢調節を行うようにしている。 [0006] wherein the driving means, for example, can apply a motorized linear drive mechanism (not shown), an operation switch, for example a remote control switch or an attendant, nurse or the like is arranged on the operation panel for operating the (not shown), back lifting, knee lifting and the operation command according to Gyatchi (knee lifting with back lifting), the controller mounted on a control box provided on the bed frame or the like, and supplies the operating power, respectively start linear motion driving mechanism, and to perform the desired attitude adjustment. なお、前記直動駆動機構におけるモータには、例えば回転量検出手段が設けられ、これら回転量検出手段による検出信号をそれぞれ背ボトム2a、膝ボトム2cの傾斜情報としてコントローラに供給するようにしている。 Incidentally, the motor in the linear motion drive mechanism, for example, the rotation amount detecting means is provided, and a detection signal from these rotational amount detecting means back bottom 2a respectively, it is supplied to the controller as the slope information for the knee bottom 2c .

【0007】そこで、前記コントローラについて、以下説明する。 [0007] Therefore, for the controller, described below. コントローラには、予め、制御手順が設定されており、前述の回転量検出手段による検出信号を、設定された手順に基づき、信号処理を行って、リモコンスイッチや操作パネルに、適宜な表示信号を与えたり、モータに電力を与えたり遮断したり、逆転起動するべく電力を与えるようにしている。 The controller, in advance, the control procedure is set, based on the procedure of the detection signal due to the aforementioned rotation amount detection unit, is set, it performs signal processing, the remote switch and the control panel, an appropriate indication signal or giving, and to provide or block powered, the power in order to reverse start motor. すなわちコントローラは、 That controller,
制御手順として例えば、リモコンスイッチや操作パネルからギャッチ(背上げと共に膝上げ)にかかる操作指令によって、背上げ機構および膝上げ機構双方の直動駆動機構におけるモータに動作電力を供給する一方、前記モータの回転量検出手段による検出信号から、背ボトム2 As a control procedure for example, by an operation command according to Gyatchi from the remote control switch or the control panel (knee lifting with back lifting), while supplying operating power to the motor in the back lifting mechanism and knee lifting mechanism both linear motion driving mechanism, said motor from the detection signal by the rotation amount detection unit, the back bottom 2
a、膝ボトム2cの傾斜状態を把握し、膝ボトム2cが20°〜30°に達したら、膝上げ機構の直動駆動機構におけるモータへの動作電力の供給を遮断し、さらにギャッチ指令を続行することで、今度は、前記膝上げ機構の直動駆動機構におけるモータへ逆転起動するべく電力を与えて、膝ボトム2cを下降させるギャッチ動作をなすように設定してある。 a, to grasp the inclination of the knee bottom 2c, When the knee bottom 2c reaches 20 ° to 30 °, cuts off the operating power supply to the motor in the linear driving mechanism of the knee lifting mechanism, further continue Gyatchi command doing, in turn, said powered so reversed start the motor in the linear driving mechanism of the knee lifting mechanism, is set to form a Gyatchi operation to lower the knee bottom 2c.

【0008】次に、かかる設定手順に基づいて、動作を説明する。 [0008] Then, based on such setting procedure, the operation will be described. 例えば、図1に示すようなボトム2が平坦な状態において、リモコンスイッチまたは操作パネルにおける操作スイッチを操作して、ギャッチ動作を行うべく動作指令を入力すると、背上げ機構および膝上げ機構双方の直動駆動機構におけるモータに動作電力が供給され、背上げリンク、膝上げリンクが変位して、背ボトム2a、膝ボトム2cが傾斜していく(図2参照)。 For example, the bottom 2 is flat state as shown in FIG. 1, by operating the operation switch in the remote control switch or the control panel and inputs an operation command to perform the Gyatchi operation, back lifting mechanism and knee lifting mechanism both straight It is supplied operating power to the motor in the dynamic drive mechanism, back lifting link and knee lifting link displacement, back bottom 2a, the knee bottom 2c is gradually inclined (see Figure 2). この際、前記背上げ機構および膝上げ機構双方の直動駆動機構におけるモータの回転量検出手段による検出信号がコントローラに供給され、コントローラにおいて、前記背ボトム2a、膝ボトム2cの傾斜状態を把握し、膝ボトム2cが20°〜30°に達したら、膝上げ機構の直動駆動機構におけるモータへの動作電力の供給を遮断し膝上げを停止させる。 At this time, a detection signal from the rotation amount detecting unit of the motor in the back lifting mechanism and knee lifting mechanism both linear motion drive mechanism is supplied to the controller, the controller grasps the back bottom 2a, the inclined state of the knee bottom section 2c Once the knee bottom 2c reaches 20 ° to 30 °, it cuts off the operating power supply to the motor in the linear driving mechanism of the knee lifting mechanism to stop knee lifting. このように、背上げと膝上げが同時になされるため、ボトム2から使用者への圧迫を抑えることができ、身体のずれを抑えることができる。 In this way, since the back-raising and knee-raising is done at the same time, it is possible to suppress the pressure from the bottom 2 to the user, it is possible to suppress the deviation of the body. そして、さらにギャッチ指令を続行することで、今度は、前記膝上げ機構の直動駆動機構におけるモータへは、逆転起動するべく電力を与えて、膝ボトム2cを下降させることができる(図3、図4参照)。 Then, by further continuing the Gyatchi command, in turn, said to motor in the linear motion drive mechanism of the knee lifting mechanism, giving power to reverse activation, it is possible to lower the knee bottom 2c (FIG. 3, see Fig. 4).

【0009】以上、一つの設定手順に基づいて、動作を説明したが、使用者の体形によって、使用者が圧迫を感じるボトム2の姿勢が異なるため、かかる状況に対応するために、膝上げ動作のタイミング、膝ボトム2cの逆転動作のタイミングを変えるようにすることもできる。 [0009] above, based on one of the setup procedure has been described the operation, the body shape of the user, since the posture of the bottom 2 which the user feels pressure is different, in order to cope with such situations, knee lifting operation possible timing, also possible to alter the timing of the reverse rotation of the knee bottom 2c.
例えば、前述の設定手順では、背上げと膝上げが同時になされるが、背上げに先行して膝上げをなすように設定することもできる。 For example, in the above setting procedure, but back lifting and knee lifting are made simultaneously, it can be set to form a knee lifting prior to back lifting. また、使用者の体形によって、使用者が圧迫を感じるボトム2の姿勢が異なることへの対策としては、膝上げ機構の直動駆動機構におけるモータへ逆転起動するべく電力を与えて、膝ボトム2cを下降させるタイミングを調節できるように調整手段を設けるようにしてもよい。 Further, the body shape of the user, as a countermeasure to the posture of the bottom 2 which the user feels pressure is different, giving power to reversed start the motor in the linear driving mechanism of the knee lifting mechanism, the knee bottom 2c the adjusting means may be provided to allow adjusting the timing for lowering.

【0010】 [0010]

【発明の効果】以上の通り、本発明によれば、ギャッチ操作によって身体、すなわち背中、腰周辺に及ぼされる圧迫を軽減することができ、しかも背上げに対し、膝上げのタイミングを送らせないように動作させようにしたので、身体のずれを抑えることができ、一層、使いやすいものとすることができる。 As described above, according to the present invention, according to the present invention, the body by Gyatchi operation, i.e. the back, it is possible to reduce the pressure exerted around the waist, to the addition back lifting, it does not send timing knee lifting since as to operate in this manner, it is possible to suppress the deviation of the body, it can be assumed that even more, easy to use.

【0011】 [0011]

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明にかかる背膝連動制御方法を適用したベッドの一つの実施態様を示す、要部模式的側面図である。 1 shows one embodiment of a bed according to the back knee interlock control method according to the present invention, is a main part schematic side view.

【図2】図1に示すベッドを、背上げと共に膝上げを行った際の説明に供する、要部模式的側面図である。 The bed shown in Figure 2 1, for explaining a time of performing the knee lifting with back lifting is a main part schematic side view.

【図3】図1に示すベッドを、さらに動作を続行させた際の説明に供する、要部模式的側面図である。 [3] The bed shown in Figure 1, for describing the time which has further continue the operation, which is a main part schematic side view.

【図4】図1に示すベッドを、さらに動作を続行させた際の説明に供する、要部模式的側面図である。 [4] The bed shown in Figure 1, further explaining a time of to continue the operation, which is a main part schematic side view.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 ベッド 2 ボトム 2a 背ボトム 2b 腰ボトム 2c 膝ボトム 2d 足ボトム 2e,2f 湾曲ボトム 1 bed 2 bottom 2a back bottom 2b waist bottom 2c knee bottom 2d foot bottom 2e, 2f curved bottom

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 背上げ機構と膝上げ機構とを有し、これら背上げ機構と膝上げ機構とは、それぞれ駆動源を備えて、操作指令により、個々に背に対応する背ボトム、 1. A and a back lifting mechanism and the knee lifting mechanism, and these back lifting mechanism and the knee lifting mechanism, each provided with a driving source, the operation command, back bottom corresponding to the back individually,
    膝に対応する膝ボトムの傾斜調節を行う一方、背ボトムと共に膝ボトムの傾斜調節を行うようにしたベッド等において、前記駆動源は動作量検出手段を有し、背ボトムと共に膝ボトムの傾斜調節を行う際、駆動源における動作量検出手段の検出信号から、背ボトムおよび膝ボトムの調節状態を監視し、膝ボトムが所定の調節状態に達したら膝上げ機構の動作を停止させ、背ボトムと共に膝ボトムの傾斜調節を続行することで、前記膝ボトムを所定の調節状態から、逆に復帰調節させるように膝上げ機構を作動させるようにしたことを特徴とするベッド等における背膝連動制御方法。 While performing the tilt adjustment of the knee bottom corresponding to the knee, in a bed or the like to perform the tilt adjustment of the knee bottom with the back bottom, wherein the driving source includes an operation amount detecting means, the inclination adjustment of the knee bottom with the back bottom when performing, from the detection signal of the operation amount detecting means in the drive source, to monitor the adjustment state of the back bottom and the knee bottom, knee bottom stops the operation of the knee lifting mechanism reaches the predetermined adjustment state, the back bottom by continuing the inclination adjustment of the knee bottom, the knee bottom from a predetermined adjustment state, the back knee interlock control method in a bed or the like, characterized in that so as to operate the knee lifting mechanism so as to return adjusted reversed .
  2. 【請求項2】 前記ベッド等において、背ボトムと共に膝ボトムの傾斜調節を行う際、背ボトムの調節動作に先立って、膝ボトムの調節動作を行わしめるようにしたことを特徴とする請求項1記載のベッド等における背膝連動制御方法。 Wherein in said bed or the like, when performing the tilt adjustment of the knee bottom with the back bottom, prior to the adjustment operation of the back bottom, claim 1, characterized in that it has to occupy perform the adjustment operation of the knee bottom back knee interlock control method in the bed, such as described.
  3. 【請求項3】 前記ベッド等において、背ボトムと共に膝ボトムの傾斜調節を行う際、膝ボトムが所定の調節状態に達したら膝上げ機構の動作を停止させ、背ボトムと共に膝ボトムの傾斜調節を続行する際に、膝ボトムを所定の調節状態から、逆に復帰調節させるタイミングを調節可能としたことを特徴とする請求項1記載のベッド等における背膝連動制御方法。 3. A the bed or the like, when performing the tilt adjustment of the knee bottom with the back bottom, knee bottom stops the operation of the knee lifting mechanism reaches a predetermined adjustment state, the tilt adjustment of the knee bottom with the back bottom when you continue, the knee bottom from a predetermined adjustment state, the back knee interlocking control method in bed or the like according to claim 1, characterized in that adjustable timing for returning adjusted reversed.
JP11217835A 1999-07-30 1999-07-30 Method for controlling interaction between back and knee on bed and the like Pending JP2001037820A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7058999B2 (en) 2002-10-24 2006-06-13 Paramount Bed Co., Ltd. Electric bed and control apparatus and control method therefor
KR100684659B1 (en) * 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Lifting control method for lying furniture such as a bed
KR100684651B1 (en) 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Coordinative lifting control method of bottom sections for lying furniture such as a bed
KR100684639B1 (en) * 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Coordinative control method for the back and knee bottom sections of a bed or the like
KR100684646B1 (en) * 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Method of controlling the lifting of bottom sections of lying furniture such as a bed
JP2007307361A (en) * 2006-04-19 2007-11-29 Kyozo Nomura Bed allowing sitting position
KR100781295B1 (en) 2002-06-19 2007-11-30 파라마운트 베드 가부시키가이샤 The back and knee bottom sections coordinative operating apparatus in a bed or the like
JP2008220603A (en) * 2007-03-12 2008-09-25 Paramount Bed Co Ltd Electric bed and its control method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100684659B1 (en) * 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Lifting control method for lying furniture such as a bed
KR100684651B1 (en) 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Coordinative lifting control method of bottom sections for lying furniture such as a bed
KR100684639B1 (en) * 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Coordinative control method for the back and knee bottom sections of a bed or the like
KR100684646B1 (en) * 2002-03-18 2007-02-20 파라마운트 베드 가부시키가이샤 Method of controlling the lifting of bottom sections of lying furniture such as a bed
KR100781295B1 (en) 2002-06-19 2007-11-30 파라마운트 베드 가부시키가이샤 The back and knee bottom sections coordinative operating apparatus in a bed or the like
US7058999B2 (en) 2002-10-24 2006-06-13 Paramount Bed Co., Ltd. Electric bed and control apparatus and control method therefor
JP2007307361A (en) * 2006-04-19 2007-11-29 Kyozo Nomura Bed allowing sitting position
JP2008220603A (en) * 2007-03-12 2008-09-25 Paramount Bed Co Ltd Electric bed and its control method
US8499385B2 (en) 2007-03-12 2013-08-06 Paramount Bed Co., Ltd. Electrically operated bed and method for controlling same

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