JPS61133746U

JPS61133746U -

Info

Publication number: JPS61133746U
Application number: JP1545585U
Authority: JP
Priority date: 1985-02-05
Filing date: 1985-02-05
Publication date: 1986-08-20
Also published as: JPH0446762Y2

Description

[Brief explanation of the drawing]

第１図は本考案実施例の断面図、第２図は第１
図のＡ―Ａ断面図、第３図は第１図の要部拡大図
、第４図は〈他の実施例１〉の断面図、第５図は
第４図の要部拡大図、第６図は〈他の実施例２〉
の断面図、第７図は第６図のＡ―Ａ断面図、第８
図は第６図の要部拡大図、第９図は〈他の実施例
３〉の断面図、第１０図は第９図のＡ―Ａ断面図
、第１１図は第９図の要部拡大図、第１２図は〈
他の実施例４〉の断面図、第１３図は第１２図の
要部拡大図、第１４図は第１２図の要部拡大図、
第１５図は従来例の断面図。１９……ダクト、２０……ダンパー、２３……
ねじりコイルばね、２５……操作レバー、２６…
…ストツパー装置、３１……軸部、３２……ばね
、３３……フツク、３４……ピン、３５……形状
記憶合金のばね。 Fig. 1 is a sectional view of the embodiment of the present invention, and Fig. 2 is a cross-sectional view of the embodiment of the present invention.
3 is an enlarged view of the main part of Fig. 1, Fig. 4 is a sectional view of <Other Example 1>, Fig. 5 is an enlarged view of the main part of Fig. 4, and Fig. 5 is an enlarged view of the main part of Fig. 4. Figure 6 is <Other Example 2>
Fig. 7 is a sectional view taken along line AA in Fig. 6, Fig. 8
The figure is an enlarged view of the main part of Fig. 6, Fig. 9 is a sectional view of <Other Example 3>, Fig. 10 is a sectional view taken along line AA of Fig. 9, and Fig. 11 is a main part of Fig. 9. The enlarged view, Figure 12, is <
13 is an enlarged view of the main part of FIG. 12, FIG. 14 is an enlarged view of the main part of FIG. 12,
FIG. 15 is a sectional view of a conventional example. 19...Duct, 20...Damper, 23...
Torsion coil spring, 25... Operating lever, 26...
... Stopper device, 31 ... Shaft, 32 ... Spring, 33 ... Hook, 34 ... Pin, 35 ... Shape memory alloy spring.

Claims

[Claims for Utility Model Registration] A damper that opens and closes a duct by its own rotation; A member that biases the damper in the closing direction; An operating lever connected to the rotation shaft of the damper; and The operating lever. and a stopper device that regulates the rotational movement of the control lever to hold the damper in an open state, wherein the stopper device regulates or releases the restriction on the rotational movement of the operating lever by its own sliding movement. A shaft, a spring that biases the shaft in a direction to release the restriction of the control lever by the shaft, and a spring that maintains the movement of the shaft by the spring in a state in which the shaft restricts rotation of the control lever. a hook, a pin that is integrally provided on the shaft and that the hook engages with, and a shape that is inserted into a duct and recovers its shape when the inside of the duct reaches a predetermined temperature and releases the engagement between the hook and the pin. A fireproof damper characterized by comprising a memory alloy member and the following.