Title:
LENGTH ADJUSTABLE LEG OF CHAIR, DESK, ETC.
Document Type and Number:
Japanese Patent JPH02149217
Kind Code:
A
Abstract:
PURPOSE: To make the base plate of a leg resistible to a strong force in the vertical direction of the leg, by bending the edge of the leg inside in an almost semicircular form in the cross sectional view, to support the base plate with the bottom of the edge. CONSTITUTION: A piston rod 7 protruding through an outer casing 4 of a gas spring 2 is supported in the direction of a central vertical axis 3 via a thrust roller bearing 8 by a base 9 of a leg pipe 1. In adjustment of the length of the gas spring 2, the outer casing 4 goes in and out of the leg pipe 1 by operation of the pin 16. The radial distance from the loaded part among the thrust roller bearing 8 and the base plate 9 to a bottom edge 19 is relatively small, and the almost semicircular edge 18 has a strong rigidity in the direction of the central vertical axis 3. Thus, even when a strong force is added on the upper part of the outer casing 2 adjacent to the pin 16 through the thrust roller bearing 8 to the base plate 9 and to the leg pipe 1, the edge 18 is not deformed.
Inventors:
HANSU YURUGEN BAUAA
HANSU PEETAA BAUAA
HANSU PEETAA BAUAA
Application Number:
JP25799189A
Publication Date:
June 07, 1990
Filing Date:
October 04, 1989
Export Citation:
Assignee:
BAUER FRITZ & SOEHNE OHG
International Classes:
A47C3/30; F16F9/38; A47B9/10; (IPC1-7): A47B9/10; A47C3/30
Attorney, Agent or Firm:
Takehisa Ito