JPS57166272A - Sheet opening and closing device - Google Patents

Sheet opening and closing device

Info

Publication number
JPS57166272A
JPS57166272A JP56049865A JP4986581A JPS57166272A JP S57166272 A JPS57166272 A JP S57166272A JP 56049865 A JP56049865 A JP 56049865A JP 4986581 A JP4986581 A JP 4986581A JP S57166272 A JPS57166272 A JP S57166272A
Authority
JP
Japan
Prior art keywords
spring
limit switch
rope
opening
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.)
Granted
Application number
JP56049865A
Other languages
Japanese (ja)
Other versions
JPS6121916B2 (en
Inventor
Hidetoshi Matsueda
Takeshi Ichiki
Shigemitsu Fuji
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56049865A priority Critical patent/JPS57166272A/en
Publication of JPS57166272A publication Critical patent/JPS57166272A/en
Publication of JPS6121916B2 publication Critical patent/JPS6121916B2/ja
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/22—Shades or blinds for greenhouses, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Abstract

PURPOSE:To prevent troubles in opening and closing during motor-driven operation by providing a spring midway in a rewinding rope rolled up and fixed in a driving drum in the reverse direction to a driving rope to stop a motor by expansion and contraction of the spring. CONSTITUTION:A pulley 12 is disposed midway in a rewinding rope 6 rolled up in a driving drum 8, the pulley 12 being pulled by a spring 13. A case 17 enclosing the spring 13 therein is provided with a limit switch 15 secured thereto in such a manner that sensors 16, 16' mounted on the spring 13 are brought into contact with an actuator of the limit switch when they are moved. Therefore, if entangled or reverse rolling is caused at time of opening and closing a sheet 1, the limit switch 15 is operated to stop a reduction gear motor 9.
JP56049865A 1981-04-01 1981-04-01 Sheet opening and closing device Granted JPS57166272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56049865A JPS57166272A (en) 1981-04-01 1981-04-01 Sheet opening and closing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56049865A JPS57166272A (en) 1981-04-01 1981-04-01 Sheet opening and closing device

Publications (2)

Publication Number Publication Date
JPS57166272A true JPS57166272A (en) 1982-10-13
JPS6121916B2 JPS6121916B2 (en) 1986-05-29

Family

ID=12842936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56049865A Granted JPS57166272A (en) 1981-04-01 1981-04-01 Sheet opening and closing device

Country Status (1)

Country Link
JP (1) JPS57166272A (en)

Also Published As

Publication number Publication date
JPS6121916B2 (en) 1986-05-29

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