EP1692967B1 - Lifting cabinet - Google Patents

Lifting cabinet Download PDF

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Publication number
EP1692967B1
EP1692967B1 EP04818476A EP04818476A EP1692967B1 EP 1692967 B1 EP1692967 B1 EP 1692967B1 EP 04818476 A EP04818476 A EP 04818476A EP 04818476 A EP04818476 A EP 04818476A EP 1692967 B1 EP1692967 B1 EP 1692967B1
Authority
EP
European Patent Office
Prior art keywords
storage box
base section
sensor means
value
motor
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.)
Not-in-force
Application number
EP04818476A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1692967A1 (en
EP1692967A4 (en
Inventor
Minoru c/o Fukushin Electric Co. Ltd. YAMANAKA
Yoshio c/o Fukushin Electric Co. Ltd. OKADA
Dan c/o Fukushin Electric Co. Ltd. TOMINAGA
Shinichi c/o Fukushin Electric Co. Ltd. KIMURA
Kyota c/o Fukushin Electric Co. Ltd. INOUE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fukushin Electric Co Ltd
Original Assignee
Fukushin Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fukushin Electric Co Ltd filed Critical Fukushin Electric Co Ltd
Publication of EP1692967A1 publication Critical patent/EP1692967A1/en
Publication of EP1692967A4 publication Critical patent/EP1692967A4/en
Application granted granted Critical
Publication of EP1692967B1 publication Critical patent/EP1692967B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B67/00—Chests; Dressing-tables; Medicine cabinets or the like; Cabinets characterised by the arrangement of drawers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B51/00—Cabinets with means for moving compartments up and down
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B67/00—Chests; Dressing-tables; Medicine cabinets or the like; Cabinets characterised by the arrangement of drawers
    • A47B67/04—Chests of drawers; Cabinets characterised by the arrangement of drawers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B77/00—Kitchen cabinets
    • A47B77/04—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts

Definitions

  • the present invention relates to an electric elevator cabinet that is installed in, for example, a kitchen, has a storage box disposed in a vertically movable manner with respect to the cabinet support frame, and has an electromagnetic drive unit for raising and lowering the storage box.
  • an electric elevator which has been proposed, it has a storage box that can move vertically with respect to the cabinet support frame installed in a high position in a home kitchen, for example, and the storage box is moved by operation of a motor or other electromagnetic drive unit.
  • a human hand may get caught in the space between the storage box and the cabinet support frame while the storage box is being raised, or the storage box may strike and damage a chopping board or other object while being lowered:
  • JP-A-4 122 307 22 discloses an electric elevator cabinet having the features of the preamble of Claim 1.
  • An object of the present invention is to provide an electric elevator cabinet that can detect contact of its storage box with an intervening object during the upward or downward motion of the storage box.
  • the elevator cabinet according to the present invention comprises the features of Claim 1.
  • the elevator cabinet according to the present invention can raise and lower the storage box by operating the electromagnetic drive unit. If the storage box strikes an intervening object during the upward or downward motion of the storage box, a force is applied in a direction opposing the upward or downward motion of the storage box, causing the value detected by the sensor means to deviate greatly from the normal value. This enables detection of contact with an intervening object during the upward or downward motion of the storage box.
  • An elevator cabinet 1 comprises a box-shaped cabinet support frame 2 that is open at the front and bottom and a storage box 3 placed inside the cabinet support frame 2.
  • the cabinet support frame 2 has guide rails 4 mounted on the insides of its left and right side walls 2a.
  • the storage box 3 has sliders 5 mounted at its upper left and upper right corners. The left and right sliders 5 of the storage box 3 engage the guide rails 4 on the left and right side walls 2a of the cabinet support frame 2 to enable the storage box 3 to be raised and lowered with respect to the cabinet support frame 2.
  • a motor 6 is mounted at the upper middle of the cabinet support frame 2 as a drive unit for raising and lowering the storage box 3.
  • Raising and lowering mechanisms 8 for raising and lowering the storage box 3 are provided at the upper left and upper right of the cabinet support frame 2.
  • a winding sheave 7 is fastened to a driving axis (not shown) of the motor 6.
  • Left and right wire ropes 9 suspend the storage box 3 via the left and right raising and lowering mechanisms 8, with one end of each being wrapped around the sheave 7.
  • FIG. 2 is a partial sectional view of a raising and lowering mechanism 8 for raising and lowering storage box 3.
  • FIG. 2 shows only the raising and lowering mechanism 8 on the right side.
  • the structure of the raising and lowering mechanism 8 on the left side is the same as on the right side, so a description thereof is omitted.
  • a fixed pulley 10 is mounted in the upper right of the inside of the cabinet support frame 2.
  • the end 9a of the wire rope 9 is held by a part of the cabinet support frame 2 to the right of fixed pulley 10.
  • a movable pulley 14 engages, from above, part of the wire rope 9 between the end of wire rope 9 held by the cabinet support frame 2 and the part that engages the fixed pulley 10.
  • the movable pulley 14 is rotatably mounted on an axis 13, which extends horizontally from a bracket 12 that rises vertically from the base section 11.
  • the base section 11 is thus suspended by the wire rope 9 via the movable pulley 14. Therefore, if the wire rope 9 is wound or unwound by the operation of the motor 6, the base section 11 ascends or descends.
  • a guide pin 15 extends upward from the bottom of the base section 11.
  • a suspending member 17 extends horizontally toward the base section 11 from the slider 5 provided at the upper left or upper right of the storage box 3.
  • a through hole 18 is formed vertically in the suspending member 17 and an upper part of guide pin 15 of the base section 11 is inserted into the through hole 18.
  • a coil spring 16 is coiled around the part of the guide pin 15 between the base section 11 and the bottom of the suspending member 17 to urge the suspending member 17 upward with respect to the base section 11.
  • a pneumatic or hydraulic damper can be used in place of the coil spring 16 as the urging means.
  • a sensor means 19, which detects the position of the storage box 3 with respect to the base section 11, is mounted between the base section 11 and the suspending member 17.
  • the sensor means 19 includes a linear-motion potentiometer.
  • a detector arm 19a of the sensor means 19 is inserted into a hole 20 provided in the suspending member 17. Accordingly, when the storage box 3 and the suspending member 17 which is integral with storage box 3 move upward or downward with respect to the base section 11, the detector arm 19a of the sensor means 19 moves upward or downward together with the suspending member 17 with respect to base section 11.
  • the position of the detector arm 19a with respect to the base section 11 is converted into an electric signal, input to the control means described later, and detected as the position of the storage box 3 with respect to the base section 11.
  • the base section 11, which is suspended by wire rope 9 via movable pulley 14, is lowered.
  • the suspending member 17, which is engaged with the guide pin 15 provided on the base section 11, and the slider 5 and the storage box 3 integral with the suspending member 17 descend by their own weight together with the base section 11.
  • the slider 5 is guided by the guide rail 4 mounted on the cabinet support frame 2.
  • FIG. 4 is a block diagram showing a controller that controls the upward or downward motion of the storage box 3 with respect to the cabinet support frame 2.
  • the controller 21 has a microcomputer as its main part and is equipped with a CPU that reads the value detected by the sensor means 19 and controls the raising and lowering action of the motor 6, a ROM that stores control programs, a RAM that stores data temporarily, input/output circuitry, and the like.
  • the motor 6 is connected to the input/output circuitry of the controller 21 via a driver 22.
  • the sensor means 19 a start button switch 23 (push type), an upper limit position detection sensor 24 provided in the upper limit position of the upward or downward motion of the storage box 3, and a lower limit position detection sensor 25 provided in the lower limit position of the upward or downward motion of the storage box 3 are connected to the input/output circuitry of the controller 21.
  • FIGs. 5 and 6 are flowcharts illustrating the raising and lowering of storage box 3 performed by the CPU of the controller 21 in FIG. 4 .
  • the storage box 3 may be loaded or empty.
  • the CPU always monitors whether or not the start button switch 23 is pressed (step S01).
  • the CPU detects this and starts raising or lowering the storage box 3. More specifically, the CPU turns the motor 6 forward or backward to make the sheave 7 wind up or unwind the wire rope 9, thereby raising or lowering the base section 11.
  • the CPU When the start button switch 23 is pressed, the CPU reads the current value X0 detected by the sensor means 19 and records it (step S02). In effect, the CPU records the position of the storage box 3 with respect to base section 11 at the instant when the upward or downward motion of the storage box 3 starts. Next, the CPU sets a timer value equivalent to a detection waiting time (described later) (step S03).
  • the CPU determines whether or not the storage box 3 is currently located at the lower limit position of its upward and downward motion, that is, whether or not the lower limit position detection sensor 25 is switched on (step S04). If the storage box 3 is not located at the lower limit position, the CPU further determines whether or not the storage box 3 is located at the upper limit position, that is, whether or not the upper position detection sensor 24 is switched on (step S14). If the storage box 3 is located at the lower limit position of its upward and downward motion (when the decision in step S04 is YES) or located between the lower limit position and the upper limit position (when the decision results of step S04 and step S14 are both NO), the CPU executes process in steps S05 to S13 below. If the storage box 3 is located at the upper limit position of its upward and downward motion (when the result of the decision in step S14 is YES), the CPU executes process in steps S15 to S23 below.
  • the CPU first drives the motor 6 forward to raise the storage box 3 (step S05).
  • the CPU decrements the timer value set in step S03 by a certain value (step S06), program returns to step S05 if the resulting timer output is not zero (if the result of the decision in step S07 is NO), and repeats process in steps S06, S07, and S05 in this order.
  • the CPU continues driving the motor 6 forward and, when the timer output is zero the detection waiting time has elapsed), reads the value X1 detected by the sensor means 19 (step S08).
  • the CPU calculates the difference Y between the value X1 detected by the sensor means 19 read in step S08 and the value X0 detected by the sensor means 19 which has been recorded in step S02 (step S09).
  • the storage box 3 is rising normally without hindrance by any object, the storage box 3 and the base section 11 rise as a single unit, so the current value X1 detected by the sensor means 19 does not differ greatly from the value X0 detected by the sensor at the point when the start switch button was pressed.
  • step S12 the CPU continues forward driving of the motor (step S12) to further raise the storage box 3. Then CPU returns to step S08 and again obtains the value X1 detected by the sensor means 19. If the difference Y does not exceed the above allowable value, and if the storage box 3 has not reached the upper limit position, that is, as long as the storage box 3 is rising normally, then the CPU repeats process is steps S08 to S12 at intervals of, for example, 0.1 second. When the storage box 3 reaches the upper limit position (or when the result of the decision in step S11 is YES), the CPU stops driving the motor 6 (step S13).
  • the base section 11 rises alone and the relative position of the storage box 3 to the base section 11 changes greatly, compressing the spring 16.
  • the difference Y corresponds to the amount of variation in the length of spring 16, or the magnitude of the force (which depends on the amount of variation in the length of the spring 16 and the spring constant) hindering the raising of the storage box 3.
  • the CPU determines whether or not the difference Y (or the magnitude of the force hindering the raising of the storage box 3) falls within an allowable range (step S10) in order to judge whether or not the raising of the storage box 3 is being impeded by a strong force caused.
  • the allowable range is set by determining how much force can be allowed to oppose the raising of the storage box 3, calculating the amount of variation in the length of the spring 16 from the magnitude of this force and the spring constant of the spring 16, and obtaining the difference in the value detected by the sensor means 19 that corresponds to this amount of variation in the length of the spring 16.
  • the CPU continues to drive the motor 6 forward (step S12) as long as the storage box 3 is not located at the upper limit position (step S11).
  • the CPU immediately stops driving the motor 6 (step S13) and stops raising the storage box 3. Therefore, even if the storage box 3 strikes an intervening object while being raised, damage to the intervening object and the storage box 3 is prevented because the motion of the storage box 3 is stopped.
  • the storage box 3 cannot follow the motion of the base section 11 due to inertia, with the result that the above-mentioned difference Y becomes large even if the storage box 6 does not encounter an intervening object. Accordingly, the difference Y is not detected in that time (by the processes in steps S05 to S07).
  • the storage box 3 (and the suspending members 17 and the sliders 5 which are integral with the storage box 3) do not quickly follow the motion of the base section 11 due to inertia, with the result that the storage box 3 moves downward relatively to the base section 11, pushing down against the force of the springs 16 around the lower part of the guide pins 15.
  • the resulting movement of storage box 3 relative to the base section 11 is converted into a movement of the detector arms 19a fixed to the suspending members 17 of the storage box 3 and input to the sensor means 19.
  • the CPU first drives the motor 6 backward to lower the storage box 3 (step S15).
  • the CPU decrements the timer value set in step S03 by a certain value (step S16), and program returns to step S15 if the timer output is not zero (or if the result of the decision in step S17 is NO), and the CPU repeats processes in steps S16, S17 and S15 in this order.
  • TheCPU continues driving the motor 6 backward and, when the timer output is zero (or the detection waiting time has elapsed), reads the value X1 detected by the sensor means 19 (step S18).
  • the CPU calculates the difference Y between the value X1 detected by the sensor means 19, which is read in step S18, and the value X0 detected by the sensor means 19 which has been recorded in step S02 (step S19).
  • the current value X1 detected by the sensor means 19 does not greatly differ from the value X0 detected by the sensor means 19 at the point when the start switch button was pressed because the storage box 3 and the base section 11 descend as a single unit.
  • step S22 the CPU continues driving the motor backward (step S22) to further lower the storage box 3.
  • the CPU repeats processes in steps S18 to S22 at intervals of, for example, 0.1 second.
  • the CPU stops driving the motor 6 (step S23).
  • the difference Y corresponds to the change in the length of spring 16, or the magnitude of the force hindering the lowering of the storage box 3.
  • the CPU determines whether or not the difference Y (or the magnitude of the force hindering the lowering of the storage box 3) falls within the allowable range (step S20) in order to decide whether or not the lowering of the storage box 3 is being impeded by a strong force.
  • the CPU continues to drive the motor 6 backward (step S22) as long as the storage box 3 is not located at the lower limit position (step S21).
  • the CPU immediately stops driving the motor 6 (step S23) and stops lowering the storage box 3. Therefore, even if the storage box 3 strikes an intervening object while being lowered, damage to the intervening object and the storage box 3 is prevented because the lowering of the storage box 3 is stopped.
  • step S14 if the storage box 3 is located between the upper and lower limit positions of its up and down motion before the start switch button 23 is pressed, the motor is turned forward to raise the storage box 3 (steps S14 and S15) ; however, the motor may be turned backward to lower the storage box 3 instead.
  • program proceeds from step S04 (when the decision result is NO) to step S15 directly, with the process in step S14 being omitted.
  • the sensor means 19 may comprise a load cell instead of the linear-motion potentiometer used in the above embodiment.
  • the load cell is disposed between base 11 and slider 5 (storage box 3) to detect the load on the storage box 3 during its upward or downward motion.
  • the guide pin 15 and the spring 16 can be omitted in this configuration.
  • the detection value of the sensor means at the time the rising or lowering motion starts is used as the detection value of the sensor means at the time immediately before upward or downward motion.
  • a detection value of the sensor means at the time a detection waiting time has elapsed from the start of upward or downward motion may also be used as the detection value of the sensor means at the time the rising or lowering motion starts.

Landscapes

  • Combinations Of Kitchen Furniture (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Forging (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
EP04818476A 2003-11-17 2004-11-10 Lifting cabinet Not-in-force EP1692967B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003386867A JP4235534B2 (ja) 2003-11-17 2003-11-17 昇降キャビネット
PCT/JP2004/016641 WO2005046393A1 (ja) 2003-11-17 2004-11-10 昇降キャビネット

Publications (3)

Publication Number Publication Date
EP1692967A1 EP1692967A1 (en) 2006-08-23
EP1692967A4 EP1692967A4 (en) 2008-03-05
EP1692967B1 true EP1692967B1 (en) 2011-05-18

Family

ID=34587408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04818476A Not-in-force EP1692967B1 (en) 2003-11-17 2004-11-10 Lifting cabinet

Country Status (7)

Country Link
EP (1) EP1692967B1 (ja)
JP (1) JP4235534B2 (ja)
KR (1) KR101118001B1 (ja)
CN (1) CN100455233C (ja)
AT (1) ATE509549T1 (ja)
HK (1) HK1094412A1 (ja)
WO (1) WO2005046393A1 (ja)

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DE102005043356A1 (de) * 2005-09-12 2007-03-15 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit höhenverstellbarem Kühlgutträger mit Sicherheitsabschaltung
DE102005057148A1 (de) 2005-11-30 2007-06-06 BSH Bosch und Siemens Hausgeräte GmbH Küchengerät mit höhenverstellbarer Regalablage
JP4534254B2 (ja) * 2006-03-23 2010-09-01 東芝ホームテクノ株式会社 昇降吊戸棚
JP5153233B2 (ja) * 2007-06-29 2013-02-27 クリナップ株式会社 キッチン用昇降式吊戸棚、除菌方法
JP4994130B2 (ja) * 2007-07-09 2012-08-08 福伸電機株式会社 キッチン用昇降式吊戸棚
JP4994131B2 (ja) * 2007-07-09 2012-08-08 福伸電機株式会社 キッチン用昇降式吊戸棚
AT507139A1 (de) * 2008-07-18 2010-02-15 Blum Gmbh Julius Möbelantrieb
DE202009004806U1 (de) * 2009-05-12 2010-10-14 Hettich Holding Gmbh & Co. Ohg Möbel
JP5612865B2 (ja) * 2010-02-05 2014-10-22 福伸電機株式会社 電動昇降式収納庫ユニット
AT514743B1 (de) * 2013-09-13 2017-12-15 Blum Gmbh Julius Vorrichtung zur Bewegung eines Möbelteils
NL2011606C2 (en) * 2013-10-14 2015-04-16 Thomas Regout Internat B V Support system for movable support of a load.
ES2748775T3 (es) 2016-11-17 2020-03-17 Wheel Me As Mueble o dispositivo que comprende un dispositivo de estabilización
CN107744273A (zh) * 2017-08-23 2018-03-02 安徽西玛科电器有限公司 一种升降嵌入式集成灶橱柜
CN109987544A (zh) * 2019-04-29 2019-07-09 金宸天恒（北京）科技发展有限公司 一种多变空间升降系统
CN110040651A (zh) * 2019-04-30 2019-07-23 金宸天恒（北京）科技发展有限公司 一种用于多变空间的多电机并行同步控制系统和方法
CN111493552B (zh) * 2020-04-28 2021-12-03 台州市路桥常青五金制造厂 一种基于电磁感应原理的化妆品自动存放装置
CN112012081A (zh) * 2020-08-19 2020-12-01 广东博智林机器人有限公司 地面整平机

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JP2516547Y2 (ja) * 1990-01-24 1996-11-06 株式会社城南製作所 昇降式吊戸棚の障害物検出装置
JPH04122307A (ja) * 1990-09-14 1992-04-22 Matsushita Electric Ind Co Ltd 昇降棚装置
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Also Published As

Publication number Publication date
HK1094412A1 (en) 2007-03-30
ATE509549T1 (de) 2011-06-15
JP4235534B2 (ja) 2009-03-11
CN100455233C (zh) 2009-01-28
KR101118001B1 (ko) 2012-02-24
CN1878487A (zh) 2006-12-13
JP2005143897A (ja) 2005-06-09
EP1692967A1 (en) 2006-08-23
EP1692967A4 (en) 2008-03-05
WO2005046393A1 (ja) 2005-05-26
KR20060107533A (ko) 2006-10-13

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