JPH0213098U

JPH0213098U -

Info

Publication number: JPH0213098U
Application number: JP9235288U
Authority: JP
Priority date: 1988-07-12
Filing date: 1988-07-12
Publication date: 1990-01-26
Anticipated expiration: 2003-07-12
Also published as: JPH0630789Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す拡大要部斜視
図、第２図は断面側面図、第３図は一部省略した
拡大横断面図、第４図は固定操作部の拡大断面図
、第５図は被検出部の拡大断面図、第６図は被検
出部の側面図、第７図乃至第９図は上下ストツプ
位置の調整方法を示す説明図、第１０図は被検出
部の他の具体例を示す拡大正面図、第１１図は変
形例を示す可動内筒の一部省略正面図、第１２図
は比較例と共に示した本考案の作用説明図である
。１……外筒、２……可動内筒、３……スクリユ
ーシヤフト・ナツト機構、４……駆動用電動モー
タ、５……周壁、６……蟻溝、８……調整杆、１
０……上限リミツトスイツチ、１１……下限リミ
ツトスイツチ、１２……被検出部、１４……固定
操作部、１６……下端部、１７……上端部、１８
……高さ表示目盛り、１９……高さ表示目印、３
８……中途部、Ｍ……長さ寸法。 Fig. 1 is an enlarged perspective view of essential parts showing an embodiment of the present invention, Fig. 2 is a sectional side view, Fig. 3 is an enlarged cross-sectional view with some parts omitted, and Fig. 4 is an enlarged sectional view of the fixed operation part. , Fig. 5 is an enlarged sectional view of the detected part, Fig. 6 is a side view of the detected part, Figs. 7 to 9 are explanatory diagrams showing how to adjust the vertical stop position, and Fig. 10 is the detected part 11 is a partially omitted front view of a movable inner cylinder showing a modified example, and FIG. 12 is an explanatory view of the operation of the present invention shown together with a comparative example. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 2... Movable inner cylinder, 3... Screw shaft/nut mechanism, 4... Drive electric motor, 5... Peripheral wall, 6... Dovetail groove, 8... Adjustment rod, 1
0...Upper limit switch, 11...Lower limit switch, 12...Detected part, 14...Fixed operation part, 16...Lower end, 17...Upper end, 18
... Height display scale, 19 ... Height display mark, 3
8...Middle part, M...Length dimension.

Claims

[Claims for Utility Model Registration] 1. An outer cylinder 1, a movable inner cylinder 2 fitted into the outer cylinder 1 so as to be able to move up and down, a screw shaft/nut mechanism 3, and a drive for driving the screw shaft/nut mechanism 3. In the lifting device equipped with an electric motor 4 for While movably inserting the adjusting rods 8, 8, the outer cylinder 1
The detected part 12 is detected by upper and lower limit switches 10 and 11 provided at predetermined positions in the vertical direction of the
, 12 are provided at the lower end portions 16 or midway portions 38 of the adjustment rods 8, 8, and further includes a fixing operation portion for fixing the adjustment rods 8, 8 at arbitrary positions in the vertical direction of the dovetail grooves 6, 6. 14, 14 are provided so as to be exposed to the outside at least when the movable inner cylinder 2 is in the raised position. 2. A height display scale 18 or a height display mark 19 exposed to the outside along the two adjustment rods 8, 8 at or near the upper end 17 of the movable inner cylinder 2.
The elevating device according to claim 1, further comprising: a. 3. The lifting device according to claim 1, wherein the length dimension M of the detected parts 12, 12 provided on the adjusting rods 8, 8, respectively, is set to be sufficiently long.