JPS5493832A - Automatic door - Google Patents

Automatic door

Info

Publication number
JPS5493832A
JPS5493832A JP16020977A JP16020977A JPS5493832A JP S5493832 A JPS5493832 A JP S5493832A JP 16020977 A JP16020977 A JP 16020977A JP 16020977 A JP16020977 A JP 16020977A JP S5493832 A JPS5493832 A JP S5493832A
Authority
JP
Japan
Prior art keywords
door
driving pulley
disks
weight
output shaft
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
Application number
JP16020977A
Other languages
Japanese (ja)
Inventor
Masayuki Nakamura
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP16020977A priority Critical patent/JPS5493832A/en
Publication of JPS5493832A publication Critical patent/JPS5493832A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To provide an automatic door, which is arranged such that the effective diameter of a driving pulley is varied with the weight of the door, so as to open and close the door always at a fixed speed independently of the weight of the door.
CONSTITUTION: In transom 1, there is provided a driving pulley 7 fitted on the output shaft 4 of speed-reducing means 3 coupled with motor 2. The driving pulley 7 consists of two disks 5, 6 in the form of a truncated cone and juxtaposed with each other, and at least one of the disks 5 or 6 is arranged to be slidable on the output shaft 4. A drive belt 9 is passed around the driving pulley 7 and a driven pulley 8 associated with the driving pulley 7, and a door 10 is suspended from the drive belt 9. In the above arrangement, door opening and closing speed can be controlled by adjusting the distance between the two disks 5 and 6 to compensate the weight change of door 10.
COPYRIGHT: (C)1979,JPO&Japio
JP16020977A 1977-12-30 1977-12-30 Automatic door Pending JPS5493832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16020977A JPS5493832A (en) 1977-12-30 1977-12-30 Automatic door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16020977A JPS5493832A (en) 1977-12-30 1977-12-30 Automatic door

Publications (1)

Publication Number Publication Date
JPS5493832A true JPS5493832A (en) 1979-07-25

Family

ID=15710107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16020977A Pending JPS5493832A (en) 1977-12-30 1977-12-30 Automatic door

Country Status (1)

Country Link
JP (1) JPS5493832A (en)

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