JPH0387793U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a partial front view of the blind lifting/lowering opening/closing device, Fig. 2 is a side view of the same, Fig. 3 is a front view of the main shaft portion, and Figs. 4 A to D show the rotating plate, engagement pin, and stopper pin. Relationship diagrams: Figure 5 is an explanatory diagram of the link mechanism in which the lower end of the slat is located at the lower end of the opening and the slat is in the closed state; Figure 6 is an illustration of the link mechanism in which the lower end of the slat is located at the lower end of the opening and the slat is in the open state. FIG. 7 is an explanatory diagram of the link mechanism when the slat is raised and lowered. In the figure, 1...frame body, 5...slat, 9...
Main shaft, 11... Drive sprocket, 13... Driven sprocket, 15... Chain, 17... Link mechanism, 19... Moving body, 21... Slut tilting mechanism, 23... Clutch mechanism, 40... Rotating plate,
41...cam plate, 49...engaging pin, 57...cam groove, 59...engaging piece, 63...stopper pin.

Claims (1)

[Claims for Utility Model Registration] A main shaft installed horizontally in the frame at the upper or lower part of the opening, and between a driving sprocket attached to the main shaft and a driven sprocket arranged at the lower or upper part of the opening. a suspended chain; a link mechanism that connects a number of slats and makes the direction of the slats variable; and a link mechanism that is attached to the chain and connected to the lowest end of the link mechanism, and that is rotated by rotation of the main shaft. a moving body that raises and lowers a large number of slats; a slat tilting mechanism that is provided coaxially with the main shaft and connected to the top end of the link mechanism and that tilts each slat with rotation of the main shaft; and a main shaft and slat tilting mechanism. A clutch mechanism provided between the main shaft and the slat mechanism to cut off transmission of power from the main shaft to the slat mechanism, and a structure of the clutch mechanism in a blind lifting/closing device comprising: a drive sprocket before the opening is fully closed; an engaging pin attached to the chain portion facing near the chain; a rotary plate rotatably disposed coaxially with the drive sprocket; a cam groove formed in the rotary plate; and a cam groove attached to the frame side. a stopper pin, and an engagement piece that is pivotally connected to the rotary plate, is retractable into the cam groove, and is detachable from the stopper pin, and the engagement pin, the cam groove, the stopper pin, and the engagement piece are When the main shaft is rotated in a direction in which the slat located at the lower end further lowers the slat from before it is located at the lower end of the opening, the engaging pin engages with the engaging piece and swings the engaging piece to engage. The piece is configured to enter the cam groove while removing the piece from the stopper pin, and engage with the cam groove to connect the drive sprocket and the rotary plate;
Furthermore, when the main shaft is rotated in the direction of raising the slat from the state in which the slat located at the lowest end is located at the lower end of the opening and the slat is closed, the engagement pin moves into the engagement piece when the slat is opened. The blind is configured such that the engaging piece is engaged with the stopper pin by swinging the engaging piece, and the engaging pin is disengaged from the cam groove and the connection between the drive sprocket and the rotary plate is released. Clutch mechanism in lift opening/closing equipment.