JPH0196494U

JPH0196494U -

Info

Publication number: JPH0196494U
Application number: JP19090687U
Authority: JP
Priority date: 1987-12-16
Filing date: 1987-12-16
Publication date: 1989-06-27

Description

[Brief explanation of the drawing]

第１図は本考案による昇降装置の具体的な実施
構造の一例を示す斜視図、第２図は支持杆及び推
進スクリユーの配設状態を示す平面図、第３図は
可動枠の下降時における側面図、第４図は可動枠
昇降時における支持杆の屈伸動作を示す要部の正
面図である。１……固定枠、２……可動枠、３……支持杆、
４，４ａ，４ｂ……推進スクリユー、５，５ａ，
５ｂ……移動ナツト、６……中間軸、８……モー
ター、１１，２１……上杆、１２，２２……下杆
、３１……主リンク、３２……副リンク、１８，
２３，３３，３４，３５，３６，３７……枢軸。 Fig. 1 is a perspective view showing an example of a specific implementation structure of the elevating device according to the present invention, Fig. 2 is a plan view showing the arrangement of the support rod and the propulsion screw, and Fig. 3 is the case when the movable frame is lowered. The side view and FIG. 4 are front views of essential parts showing the bending and stretching movements of the support rods when the movable frame is raised and lowered. 1... fixed frame, 2... movable frame, 3... support rod,
4, 4a, 4b...propulsion screw, 5, 5a,
5b...Moving nut, 6...Intermediate shaft, 8...Motor, 11, 21...Upper rod, 12, 22...Lower rod, 31...Main link, 32...Sublink, 18,
23, 33, 34, 35, 36, 37...Axis.

Claims

[Scope of utility model registration request]

Between the vertically opposing movable frame and fixed frame, there is a pair of inner and outer support rods each consisting of a pair of main and sub-links in which the upper and lower rods are connected in a bendable and extensible manner by a pivot and the lower rods intersect in an X shape. are arranged symmetrically, and the upper and lower ends of the main link of each of the support rods are connected to each corner of the movable frame and the fixed frame with a fixed pivot, and the upper end of the sub-link is connected to the upper end of the upper rod of the main link. The lower end of the sub-link is connected to the intermediate part and is connected to a movable nut which is screwed onto a propulsion screw whose direction of rotation is reversed, and the output of the motor installed in the center of the fixed frame is transferred in and out through the intermediate shaft. An elevating device for a workbench, etc., which is configured to distribute and transmit rotational force to each propulsion screw in the same direction, and to vertically bend and extend a pair of inner and outer support rods by the rotational movement of each of the screws, thereby raising and lowering a movable frame.