JPH0556900U - Lift device - Google Patents
Lift deviceInfo
- Publication number
- JPH0556900U JPH0556900U JP11281591U JP11281591U JPH0556900U JP H0556900 U JPH0556900 U JP H0556900U JP 11281591 U JP11281591 U JP 11281591U JP 11281591 U JP11281591 U JP 11281591U JP H0556900 U JPH0556900 U JP H0556900U
- Authority
- JP
- Japan
- Prior art keywords
- lift
- frame
- cylinder
- lift mechanism
- support member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Conveying And Assembling Of Building Elements In Situ (AREA)
- Movable Scaffolding (AREA)
Abstract
(57)【要約】
【目的】 ４つのリフト機構で支持部材を同時に同期し
て昇降できるようにする。
【構成】 基台６に設けたモータ７でシリンダ８を伸縮
して支持部材４を昇降するリフト機構３を４つ配設し、
この各リフト機構３のモータ７回転数を検出するポテン
ションメータと、この各ポテンションメータの出力差が
設定範囲外の時に最大ストロークのリフト機構３を停止
する手段を設けて４つのリフト機構３で４つの支持部材
３を同時に同期して昇降できる。
(57) [Summary] [Purpose] Four lift mechanisms enable the support members to move up and down in synchronization at the same time. [Structure] Four lift mechanisms 3 are provided for elevating and lowering a support member 4 by expanding and contracting a cylinder 8 by a motor 7 provided on a base 6.
A potentiometer for detecting the number of revolutions of the motor 7 of each lift mechanism 3 and means for stopping the lift mechanism 3 having the maximum stroke when the output difference of each potentiometer is out of the set range are provided. Thus, the four support members 3 can be simultaneously moved up and down in synchronization.
Description
【０００１】[0001]
本考案は、建築現場で天井に天井ボード取付用のフレームを取付ける際に用い るリフト装置に関する。 The present invention relates to a lift device used when mounting a frame for mounting a ceiling board on a ceiling at a construction site.
【０００２】[0002]
建築現場で天井に天井ボード取付用のフレームを取付けるには、床上に足場を 組み、この足場上でバー材を方形状に組んでフレームとし、そのフレームを作業 者が手で持ち上げて取付けている。 To attach a frame for mounting a ceiling board to a ceiling at a construction site, a scaffold is assembled on the floor, and a bar material is squarely assembled on the scaffold to form a frame, and the operator manually lifts and installs the frame. ..
【０００３】[0003]
かかるフレームの取付けでは足場を組む時間と足場をこわす時間に多大な時間 がかかって作業時間が長くなるし、作業者がフレームを持ち上げるので苦渋作業 となる。 Mounting such a frame requires a great deal of time to assemble the scaffold and time to break the scaffold, resulting in a long working time, and an operator lifting the frame causes a painful work.
【０００４】 そこで、本考案は方形状に組んだフレームを持ち上げできるようにしたリフト 装置を提供することを目的とする。Therefore, an object of the present invention is to provide a lift device capable of lifting a frame assembled in a rectangular shape.
【０００５】[0005]
支持部材４を昇降する複数のリフト機構３と、各リフト機構３の支持部材４の 昇降ストロークを検出する手段と、その昇降ストロークの差が設定範囲外の時に 最大昇降ストロークのリフト機構３を停止する手段より成るリフト機構。 A plurality of lift mechanisms 3 for raising and lowering the supporting member 4, a means for detecting the raising and lowering strokes of the supporting members 4 of each lifting mechanism 3, and the lifting mechanism 3 having the maximum raising and lowering stroke when the difference between the raising and lowering strokes is out of the set range. Lift mechanism consisting of
【０００６】[0006]
複数のリフト機構３で支持部材４を同時に同期して昇降できるから、バーを方 形状に組立てたフレームを水平に昇降できてそのフレームを天井に簡単に取付け できる。 Since the support members 4 can be simultaneously moved up and down by the plurality of lift mechanisms 3 synchronously, the frame in which the bars are assembled in a rectangular shape can be horizontally moved up and down, and the frames can be easily attached to the ceiling.
【０００７】[0007]
図１に示すようにアルミ製の断面Ｔ字状のバー１を方形状に組んで天井ボート 取付用のフレーム２としてあり、建築現場の床上におけるこのフレーム２の４つ のコーナー部と対向した位置にリフト機構３がそれぞれ配設され、各リフト機構 ３で昇降される支持部材４でフレーム２の４つのコーナー部を支持し、各昇降機 構３で支持部材４を上昇することでフレーム２を持ち上げるようにしてある。 前記リフト機構３は図２に示すように、キャスタ５を備えた基台６を有し、こ の基台６にモータ７で伸縮するシリンダ８と縦ガイド９を設け、この縦ガイド９ に沿って昇降自在な可動レール１０をシリンダ８の可動部８ａに連結し、その可 動レール１０に沿って支持部材４が昇降自在となり、その支持部材４に連結した 索条１１を滑車１２でシリンダ８の固定部８ｂに連結し、シリンダ８の可動部８ ａを伸縮すると可動レール１０が昇降し、かつ支持部材４が可動レール１０に沿 って昇降するようにしてある。 前記シリンダ８は図３に示すように固定部８ｂとなる外筒１３に設けた回り止 め棒１４に沿ってナット１５を昇降自在に設け、このナット１５に可動部８ａと なるロッド１６を連結し、かつナット１５にネジ杆１７をネジ合して成り、その ネジ杆１７を回転することでロッド１６が伸縮するようにしてある。 前記ネジ杆１７はギヤ１８を介してモータ７の出力軸７ａに連結し、そのネジ 杆１７はギヤ１９を介してポテンショメータ２０の回転部２０ａに連結し、この ポテンションメータ２０でネジ杆１７の回転数を検出してロッド１６の伸縮スト ロークを検出できるようにしてある。 図１に示すように前記各モータ７と各ポテンションメータ２０はケーブル２１ で制御ユニットを内蔵した操作盤２２に接続して、４つのリフト機構３のシリン ダ８を個々に伸縮できるし、各シリンダ８を同時に同期して伸縮できるようにし てあり、これによって４つの支持部材４を同期して昇降させることでフレーム２ を平行に昇降できる。 As shown in Fig. 1, a bar 1 having a T-shaped cross section made of aluminum is assembled into a square shape to form a frame 2 for mounting a ceiling boat, and the position facing the four corners of the frame 2 on the floor of the construction site. Lifting mechanisms 3 are respectively disposed in the lifts 3, and the four corners of the frame 2 are supported by the supporting members 4 that are lifted and lowered by each lifting mechanism 3, and the lifting members 3 are lifted by each elevator mechanism 3 to lift the frame 2. Is done. As shown in FIG. 2, the lift mechanism 3 has a base 6 provided with casters 5, and a cylinder 8 and a vertical guide 9 which are expanded and contracted by a motor 7 are provided on the base 6, along which the vertical guide 9 extends. A movable rail 10 that can be moved up and down is connected to a movable portion 8a of a cylinder 8, and a support member 4 can be moved up and down along the movable rail 10, and a rope 11 connected to the support member 4 is attached to a cylinder 8 by a pulley 12. When the movable portion 8a of the cylinder 8 is expanded and contracted, the movable rail 10 moves up and down, and the support member 4 moves up and down along the movable rail 10. As shown in FIG. 3, the cylinder 8 is provided with a nut 15 which is movable up and down along a rotation stop rod 14 provided on an outer cylinder 13 which is a fixed portion 8b, and a rod 16 which is a movable portion 8a is connected to the nut 15. Further, the rod 16 is expanded and contracted by screwing a screw rod 17 onto the nut 15 and rotating the screw rod 17. The screw rod 17 is connected to the output shaft 7a of the motor 7 via the gear 18, and the screw rod 17 is connected to the rotating portion 20a of the potentiometer 20 via the gear 19. The number of rotations is detected so that the expansion / contraction stroke of the rod 16 can be detected. As shown in FIG. 1, each motor 7 and each potentiometer 20 are connected to an operation panel 22 containing a control unit by a cable 21 so that the cylinders 8 of the four lift mechanisms 3 can be individually expanded and contracted. The cylinders 8 can be simultaneously expanded and contracted in synchronization with each other, whereby the frame 2 can be moved up and down in parallel by moving up and down the four support members 4 in synchronization.
【０００８】 次に４つのリフト機構３のシリンダ８を同時に同期して伸縮する動作を説明す る。 操作盤２２の釦を操作して４つのリフト機構３のモータ７を駆動し、各シリン ダ８のロッド１６を伸長する。 これと同時に各ポテンションメータ２０の出力を比較し、その出力の差があら かじめ設定した範囲内である場合にはそのまま動作し、出力の差があらかじめ設 定した範囲外である場合には最も出力の大きなポテンションメータ２０を有する リフト機構３のシリンダ８が最もストローク長く伸長していると判断し、そのリ フト機構３のモータ７への通電を停止してシリンダ８を停止させ、これによって 各ポテンションメータ２０の出力の差があらかじめ設定した範囲内となったら前 記停止していたモータ７へも通電して各リフト機構３のシリンダ８を同時に伸長 する。 以上の動作の一例をフローチャートで示すと図４に示すようになる。 図４のフローチャートで全リフト機構上げサブルーチンは図５に示すようにな り、全リフト機構下げサブルーチンは図６に示すようになる。Next, the operation of simultaneously expanding and contracting the cylinders 8 of the four lift mechanisms 3 will be described. The buttons of the operation panel 22 are operated to drive the motors 7 of the four lift mechanisms 3 to extend the rods 16 of the cylinders 8. At the same time, the outputs of the potentiometers 20 are compared with each other. If the difference between the outputs is within the preset range, the operation is continued. If the difference between the outputs is outside the preset range, the operation is continued. It is judged that the cylinder 8 of the lift mechanism 3 having the potentiometer 20 with the largest output is extended the longest stroke, and the power supply to the motor 7 of the lift mechanism 3 is stopped to stop the cylinder 8. When the difference between the outputs of the potentiometers 20 falls within a preset range, the motor 7 which has been stopped is energized to simultaneously extend the cylinders 8 of the lift mechanisms 3. An example of the above operation is shown in a flowchart in FIG. In the flowchart of FIG. 4, the all lift mechanism raising subroutine is as shown in FIG. 5, and the all lift mechanism lowering subroutine is as shown in FIG.
【０００９】[0009]
複数のリフト機構３の支持部材４を同時に同期して昇降できるから、その各支 持部材４で天井ボード取付用のフレーム２を支持することでそのフレーム２を水 平にして昇降させて天井に取付けでき、従来のように足場を用いたり、作業者が 手で持ち上げなくとも良くなってフレーム２の取付け作業を簡単にできる。 Since the support members 4 of the plurality of lift mechanisms 3 can be simultaneously moved up and down in synchronization, each support member 4 supports the frame 2 for mounting the ceiling board so that the frame 2 is leveled and lifted to the ceiling. The frame 2 can be mounted, and the work for mounting the frame 2 can be simplified because it is not necessary for a worker to use a scaffold or to lift it by hand.
【提出日】平成５年１月６日[Submission date] January 6, 1993
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】考案の詳細な説明[Name of item to be corrected] Detailed explanation of the device
【補正方法】変更[Correction method] Change
【０００１】[0001]
【産業上の利用分野】 本考案は、建築現場で天井に天井ボード取付用のフレームを取付ける際に用い るリフト装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift device used for mounting a frame for mounting a ceiling board on a ceiling at a construction site.
【０００２】[0002]
建築現場で天井に天井ボード取付用のフレームを取付けるには、床上に足場を 組み、この足場上でバー材を方形状に組んでフレームとし、そのフレームを作業 者が手で持ち上げて取付けている。 To attach a frame for mounting a ceiling board to a ceiling at a construction site, a scaffold is assembled on the floor, and a bar material is squarely assembled on the scaffold to form a frame, and the operator manually lifts and installs the frame. ..
【０００３】[0003]
かかるフレームの取付けでは足場を組む時間と足場をこわす時間に多大な時間 がかかって作業時間が長くなるし、作業者がフレームを持ち上げるので苦渋作業 となる。 Mounting such a frame requires a great deal of time to assemble the scaffold and time to break the scaffold, resulting in a long working time, and an operator lifting the frame causes a painful work.
【０００４】 そこで、本考案は方形状に組んだフレームを持ち上げできるようにしたリフト 装置を提供することを目的とする。Therefore, an object of the present invention is to provide a lift device capable of lifting a frame assembled in a rectangular shape.
【０００５】[0005]
支持部材４を昇降する複数のリフト機構３と、各リフト機構３の支持部材４の 昇降ストロークを検出する手段と、その昇降ストロークの差が設定範囲外の時に 最大昇降ストロークのリフト機構３を停止する手段より成るリフト機構。 A plurality of lift mechanisms 3 for raising and lowering the supporting member 4, a means for detecting the raising and lowering strokes of the supporting members 4 of each lifting mechanism 3, and the lifting mechanism 3 having the maximum raising and lowering stroke when the difference between the raising and lowering strokes is out of the set range. Lift mechanism consisting of
【０００６】[0006]
複数のリフト機構３で支持部材４を同時に同期して昇降できるから、バーを方 形状に組立てたフレームを水平に昇降できてそのフレームを天井に簡単に取付け できる。 Since the support members 4 can be simultaneously moved up and down by the plurality of lift mechanisms 3 synchronously, the frame in which the bars are assembled in a rectangular shape can be horizontally moved up and down, and the frames can be easily attached to the ceiling.
【０００７】[0007]
図１に示すようにアルミ製の断面Ｔ字状のバー１を方形状に組んで天井ボート 取付用のフレーム２としてあり、建築現場の床上におけるこのフレーム２の４つ のコーナー部と対向した位置にリフト機構３がそれぞれ配設され、各リフト機構 ３で昇降される支持部材４でフレーム２の４つのコーナー部を支持し、各昇降機 構３で支持部材４を上昇することでフレーム２を持ち上げるようにしてある。 前記リフト機構３は図２に示すように、キャスタ５を備えた基台６を有し、こ の基台６にモータ７で伸縮するシリンダ８と縦ガイド９を設け、この縦ガイド９ に沿って昇降自在な可動レール１０をシリンダ８の可動部８ａに連結し、その可 動レール１０に沿って支持部材４が昇降自在となり、その支持部材４に連結した 索条１１を滑車１２でシリンダ８の固定部８ｂに連結し、シリンダ８の可動部８ ａを伸縮すると可動レール１０が昇降し、かつ支持部材４が可動レール１０に沿 って昇降するようにしてある。 前記シリンダ８は図３に示すように固定部８ｂとなる外筒１３に設けた回り止 め棒１４に沿ってナット１５を昇降自在に設け、このナット１５に可動部８ａと なるロッド１６を連結し、かつナット１５にネジ杆１７をネジ合して成り、その ネジ杆１７を回転することでロッド１６が伸縮するようにしてある。 前記ネジ杆１７はギヤ１８を介してモータ７の出力軸７ａに連結し、そのネジ 杆１７はギヤ１９を介してポテンショメータ２０の回転部２０ａに連結し、この ポテンションメータ２０でネジ杆１７の回転数を検出してロッド１６の伸縮スト ロークを検出できるようにしてある。 図１に示すように前記各モータ７と各ポテンションメータ２０はケーブル２１ で制御ユニットを内蔵した操作盤２２に接続して、４つのリフト機構３のシリン ダ８を個々に伸縮できるし、各シリンダ８を同時に同期して伸縮できるようにし てあり、これによって４つの支持部材４を同期して昇降させることでフレーム２ を平行に昇降できる。 As shown in Fig. 1, a bar 1 having a T-shaped cross section made of aluminum is assembled into a square shape to form a frame 2 for mounting a ceiling boat, and the position facing the four corners of the frame 2 on the floor of the construction site. Lifting mechanisms 3 are respectively disposed in the lifts 3, and the four corners of the frame 2 are supported by the supporting members 4 that are lifted and lowered by each lifting mechanism 3, and the lifting members 3 are lifted by each elevator mechanism 3 to lift the frame 2. Is done. As shown in FIG. 2, the lift mechanism 3 has a base 6 provided with casters 5, and a cylinder 8 and a vertical guide 9 which are expanded and contracted by a motor 7 are provided on the base 6, along which the vertical guide 9 extends. A movable rail 10 that can be moved up and down is connected to a movable portion 8a of a cylinder 8, and a support member 4 can be moved up and down along the movable rail 10, and a rope 11 connected to the support member 4 is attached to a cylinder 8 by a pulley 12. When the movable portion 8a of the cylinder 8 is expanded and contracted, the movable rail 10 moves up and down, and the support member 4 moves up and down along the movable rail 10. As shown in FIG. 3, the cylinder 8 is provided with a nut 15 which is movable up and down along a rotation stop rod 14 provided on an outer cylinder 13 which is a fixed portion 8b, and a rod 16 which is a movable portion 8a is connected to the nut 15. Further, the rod 16 is expanded and contracted by screwing a screw rod 17 onto the nut 15 and rotating the screw rod 17. The screw rod 17 is connected to the output shaft 7a of the motor 7 via the gear 18, and the screw rod 17 is connected to the rotating portion 20a of the potentiometer 20 via the gear 19. The number of rotations is detected so that the expansion / contraction stroke of the rod 16 can be detected. As shown in FIG. 1, each of the motors 7 and each of the potentiometers 20 is connected by a cable 21 to an operation panel 22 having a built-in control unit so that the cylinders 8 of the four lift mechanisms 3 can be individually expanded and contracted. The cylinders 8 can be simultaneously expanded and contracted in synchronization with each other, whereby the frame 2 can be moved up and down in parallel by synchronously moving up and down the four support members 4.
【０００８】 次に４つのリフト機構３のシリンダ８を同時に同期して伸縮する動作を説明す る。 操作盤２２の釦を操作して４つのリフト機構３のモータ７を駆動し、各シリン ダ８のロッド１６を伸長する。 これと同時に各ポテンションメータ２０の出力を比較し、その出力の差があら かじめ設定した範囲内である場合にはそのまま動作し、出力の差があらかじめ設 定した範囲外である場合には最も出力の大きなポテンションメータ２０を有する リフト機構３のシリンダ８が最もストローク長く伸長していると判断し、そのリ フト機構３のモータ７への通電を停止してシリンダ８を停止させ、これによって 各ポテンションメータ２０の出力の差があらかじめ設定した範囲内となったら前 記停止していたモータ７へも通電して各リフト機構３のシリンダ８を同時に伸長 する。 以上の動作の一例をフローチャートで示すと図４に示すようになる。 図４のフローチャートで全リフト機構上げサブルーチンは図５に示すようにな り、全リフト機構下げサブルーチンは図６に示すようになる。Next, the operation of simultaneously expanding and contracting the cylinders 8 of the four lift mechanisms 3 will be described. The buttons of the operation panel 22 are operated to drive the motors 7 of the four lift mechanisms 3 to extend the rods 16 of the cylinders 8. At the same time, the outputs of the potentiometers 20 are compared with each other. If the difference between the outputs is within the preset range, the operation is continued. If the difference between the outputs is outside the preset range, the operation is continued. It is judged that the cylinder 8 of the lift mechanism 3 having the potentiometer 20 with the largest output is extended the longest stroke, and the power supply to the motor 7 of the lift mechanism 3 is stopped to stop the cylinder 8. When the difference between the outputs of the potentiometers 20 falls within a preset range, the motor 7 which has been stopped is energized to simultaneously extend the cylinders 8 of the lift mechanisms 3. An example of the above operation is shown in a flowchart in FIG. In the flowchart of FIG. 4, the all lift mechanism raising subroutine is as shown in FIG. 5, and the all lift mechanism lowering subroutine is as shown in FIG.
【０００９】[0009]
複数のリフト機構３の支持部材４を同時に同期して昇降できるから、その各支 持部材４で天井ボード取付用のフレーム２を支持することでそのフレーム２を水 平にして昇降させて天井に取付けでき、従来のように足場を用いたり、作業者が 手で持ち上げなくとも良くなってフレーム２の取付け作業を簡単にできる。 Since the support members 4 of the plurality of lift mechanisms 3 can be simultaneously moved up and down in synchronization, each support member 4 supports the frame 2 for mounting the ceiling board so that the frame 2 is leveled and lifted to the ceiling. The frame 2 can be mounted, and the work for mounting the frame 2 can be simplified because it is not necessary for a worker to use a scaffold or to lift it by hand.
【図１】リフト装置の全体概略斜視図である。FIG. 1 is an overall schematic perspective view of a lift device.
【図２】リフト機構の断面図である。FIG. 2 is a sectional view of a lift mechanism.
【図３】シリンダ伸縮部の断面図である。FIG. 3 is a sectional view of a cylinder expanding / contracting portion.
【図４】動作フローチャートである。FIG. 4 is an operation flowchart.
【図５】動作フローチャートである。FIG. 5 is an operation flowchart.
【図６】動作フローチャートである。FIG. 6 is an operation flowchart.
１…バー、２…フレーム、３…リフト機構、４…支持部
材、７…モータ、８…シリンダ、２０…ポテンションメ
ータ、２２…操作盤。1 ... Bar, 2 ... Frame, 3 ... Lift mechanism, 4 ... Support member, 7 ... Motor, 8 ... Cylinder, 20 ... Potentiometer, 22 ... Operation panel.
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【手続補正書】[Procedure amendment]
【提出日】平成５年１月６日[Submission date] January 6, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】実用新案登録請求の範囲[Item name to be amended] Scope of utility model registration request
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【実用新案登録請求の範囲】[Scope of utility model registration request]
Claims (1)
３と、各リフト機構３の支持部材４の昇降ストロークを
それぞれ検出する手段と、各支持部材４の昇降ストロー
クを比較してその差が設定範囲外の時に最も長い昇降ス
トロークのリフト機構３を停止する手段より成るリフト
機構。1. A plurality of lift mechanisms 3 for elevating and lowering a support member 4, a means for detecting an elevating stroke of each support member 4 of each lift mechanism 3, and an elevating stroke of each support member 4 are compared to find a difference therebetween. A lift mechanism including means for stopping the lift mechanism 3 having the longest lifting stroke when it is out of the set range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11281591U JPH0556900U (en) | 1991-12-27 | 1991-12-27 | Lift device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11281591U JPH0556900U (en) | 1991-12-27 | 1991-12-27 | Lift device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0556900U true JPH0556900U (en) | 1993-07-27 |
Family
ID=14596228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11281591U Pending JPH0556900U (en) | 1991-12-27 | 1991-12-27 | Lift device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0556900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000143183A (en) * | 1998-11-12 | 2000-05-23 | Tsubakimoto Chain Co | Elevating system control method and device |
| JP2009220960A (en) * | 2008-03-17 | 2009-10-01 | Mitsubishi Electric Corp | Lifting device |
| JP2015019755A (en) * | 2013-07-17 | 2015-02-02 | 青山 馥 | Care lifter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534327A (en) * | 1976-07-02 | 1978-01-14 | Takenaka Komuten Co | Method of horizontally controlling building and so on when lifting up |
-
1991
- 1991-12-27 JP JP11281591U patent/JPH0556900U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS534327A (en) * | 1976-07-02 | 1978-01-14 | Takenaka Komuten Co | Method of horizontally controlling building and so on when lifting up |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000143183A (en) * | 1998-11-12 | 2000-05-23 | Tsubakimoto Chain Co | Elevating system control method and device |
| JP2009220960A (en) * | 2008-03-17 | 2009-10-01 | Mitsubishi Electric Corp | Lifting device |
| JP2015019755A (en) * | 2013-07-17 | 2015-02-02 | 青山 馥 | Care lifter |
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