JPH02107685U

JPH02107685U -

Info

Publication number: JPH02107685U
Application number: JP1522989U
Authority: JP
Priority date: 1989-02-10
Filing date: 1989-02-10
Publication date: 1990-08-27

Description

[Brief explanation of drawings]

第１図はこの考案にかかるダンパ機構を示す要
部断面図、第２図はこの考案にかかるダンパ機構
のピストン及びそのピストンに取付けた挿通軸を
示す斜視図、第３図はこの考案にかかるダンパ機
構の蓋体及びその蓋体に取付けた突出体を示す斜
視図、第４図及び第５図はこの考案にかかるダン
パ機構の作用を説明するためのそれぞれの要部断
面図、第６図は従来のダンパ機構を示す断面図、
第７図及び第８図は従来のダンパ機構の作用を説
明するための要部断面図である。７……ピストンロツド、６……ダンパオイル、
１……ピストン、８……スプリング、３……蓋体
、９……調速手段、２……挿通軸、４ａ……挿通
室、４……突出体。 Fig. 1 is a cross-sectional view of the main parts of the damper mechanism according to this invention, Fig. 2 is a perspective view showing the piston of the damper mechanism according to this invention and an insertion shaft attached to the piston, and Fig. 3 is a sectional view of the damper mechanism according to this invention. FIGS. 4 and 5 are perspective views showing the lid of the damper mechanism and the protrusion attached to the lid; FIGS. 4 and 5 are cross-sectional views of essential parts for explaining the operation of the damper mechanism according to this invention; FIG. is a sectional view showing a conventional damper mechanism,
FIGS. 7 and 8 are sectional views of essential parts for explaining the operation of a conventional damper mechanism. 7... Piston rod, 6... Damper oil,
DESCRIPTION OF SYMBOLS 1...Piston, 8...Spring, 3...Lid, 9...Speed control means, 2...Insertion shaft, 4a...Insertion chamber, 4...Protrusion body.

Claims

[Claim for Utility Model Registration] A rotating shaft fixed to the door frame, a gear train that rotates around the rotating shaft when the door is opened and closed, and a crank whose one end is connected to the gear train. a piston rod whose one end is connected to the other end of the crank; a piston which is fixed to the other end of the piston and is fitted into a cylinder with damper oil sealed in the oil chamber; A spring that presses in the direction, a lid body attached to the tip of the cylinder, and a regulating means provided inside the lid body and controlling the closing speed of the door by adjusting the hydraulic pressure acting on the piston when closing the door. In the damper mechanism, an insertion shaft having the same cross-sectional area as the piston rod and longer than at least the piston sliding amount is provided protrudingly on the tip side of the piston, and the insertion shaft is fitted into the lid side, so that when the piston retreats, A damper mechanism characterized by being provided with a protruding body that forms an insertion chamber that complements the vacuum part of the piston rod that comes out of the oil chamber.