JPS63127598U

JPS63127598U -

Info

Publication number: JPS63127598U
Application number: JP1780887U
Authority: JP
Priority date: 1987-02-12
Filing date: 1987-02-12
Publication date: 1988-08-22
Also published as: JPH0450797Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の装置のカバードラ
ムの斜視図、第２図は第１図のカバードラムを備
えた上昇時のブラインドの要部を断面で示す正面
図、第３図は昇降距離の長いブラインドの下降時
の状態を示す部分断面正面図、第４図は昇降距離
の短いブラインドの下降時の状態を示す部分断面
正面図である。図において、符号１０は巻取りドラム、１２は
おねじ部、２０はカバードラム、２２は円筒体、
２３は外周面、２４は円筒体、２５は突起、２６
は内周面、２９は穴、３０は回転軸、３１はドラ
ムホルダ、３２はめねじ部、３４は軸部、４０は
ヘツドボツクス、４４はボトムレールをそれぞれ
示す。 Fig. 1 is a perspective view of a cover drum of an apparatus according to an embodiment of the present invention, Fig. 2 is a front view in cross section showing the main part of the blind when it is raised, equipped with the cover drum of Fig. 1, and Fig. 3 is a FIG. 4 is a partially sectional front view showing a state in which a blind with a long vertical distance is lowered, and FIG. 4 is a partially sectional front view showing a state in which a blind with a short vertical distance is lowered. In the figure, numeral 10 is a winding drum, 12 is a male threaded portion, 20 is a cover drum, 22 is a cylindrical body,
23 is an outer peripheral surface, 24 is a cylindrical body, 25 is a projection, 26
29 is an inner peripheral surface, 29 is a hole, 30 is a rotating shaft, 31 is a drum holder, 32 is a female threaded portion, 34 is a shaft portion, 40 is a head box, and 44 is a bottom rail.

Claims

[Claims for Utility Model Registration] (1) A rotating shaft rotatably supported by a head box, a winding drum fitted to the rotating shaft so as to be integrally rotatable and slidable relative to each other, and a circumferential surface of the winding drum. a drum holder fixed to the head box; a female threaded part provided on the drum holder and mating with the male thread; A device consisting of a cover drum that is fitted onto the outside and rotates integrally with the rotating shaft, the cover drum rotating integrally but with a double inner and outer cylinder whose mutual axial position is adjustable. The outer cylindrical body is formed from a body, and the outer cylindrical body is fitted onto a shaft portion on the outer periphery of the female threaded portion, and the end face portion of the inner cylindrical body is fitted onto the rotation shaft so as to be able to rotate integrally with each other and slide relative to each other. Lifting device for Venetian blinds. (2) A protrusion that elastically moves in and out is provided on the outer circumferential surface of the inner cylindrical body, a hole into which the protrusion fits is provided on the inner circumferential surface of the outer cylindrical body, and the cover is closed by selecting the hole into which the protrusion fits. A lifting device for a Venetian blind according to claim 1, characterized in that the entire length of the drum is extendable and retractable.