JPS629473Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention allows a power source such as a motor to be connected extremely easily to a rotating shaft driven by a manual handle that opens and closes a damper placed on a wall surface, etc. west,
This invention relates to a damper that can be used both manually and automatically.

(Prior art) A large number of mutually parallel rotating shafts are pivotally mounted on a rectangular frame, and each rotating shaft rotates.
A damper is known in which the air volume is adjusted or the air flow is blocked by fixing blade plates with side edges slightly overlapped and rotating a rotating shaft.

The rotary shaft of this damper is rotated either by a handle fixed to the rotary shaft or automatically by a power source such as a motor.

(Problem that the invention seeks to solve) However, some of these dampers are normally operated manually, but it is desirable to be able to open and close them automatically in an emergency, such as a fire. However, for this reason, conventional power switching means have complicated structures or are troublesome to operate.

(Problems to be Solved) The present invention relates to a damper that solves the above-mentioned problems. In a damper which is provided in a frame body in conjunction with each other so that the dampers can be rotated synchronously so as to be in a slightly overlapping state, one of the rotary shafts is extended to the outside of the frame body, and , a handle and an engagement plate having a notched recess on the side surface are fixed to the extending portion, and a screw rod integral with the engagement piece is loosely fitted into a long hole bored in the handle, and the screw rod is inserted into the long hole. By fixing the engaging piece at a proper position, the engaging piece can be inserted into or removed from the notched recess.

(Example) In the figure, reference numeral 1 denotes a pair of front and rear frames that are open at the center, and both frames 1 have left and right frames 1 with two reinforcing rods 2a fixed in the vertical direction at the center of the inner surface. A damper body 3 is formed by being connected by a pair of side plates 2, 2.

Attachment holes 4 are formed along the outer periphery of the frame 1, and the main body 3 is fitted into an opening in a wall (not shown) by screwing a bolt or the like into the attachment hole 4.

Reference numeral 5 denotes a flange projecting outward from each frame 1, and the flange 5 is provided with a rivet hole 6 for mounting.

7 is the side plate 2 between the reinforcing rods 2a, 2a.
A blade plate 9 having a curved portion 8 extending in the same circumferential direction at its tip is fixed to the rotating shaft 7 with a shaft stopper 10. There is.

11 is a crank arm fixed to the front upper surface of each blade plate 9 and facing forward and upward;
It is connected to a connecting rod 13 facing in the vertical direction via a connecting piece 12 pivotally attached to the upper end of the connecting rod 13.
As a result, each blade plate 9 is designed to interlock with each other.

Reference numeral 14 denotes a housing fixed to a substantially central portion of the right side plate 2 facing outward, and one shaft 7' of the central portion of each of the rotating shafts 7 passes through the housing 14 and extends outward. It has extended to

Reference numeral 31 denotes an engagement plate that is fitted slightly inward from the right end of the rotating shaft 7' that protrudes from the housing 14, and has a notch recess 32 cut at an appropriate position on the periphery. A portion 31a is provided in a protruding manner.

A gear 17 is externally fitted and secured to the left end of the small diameter portion 31a, and the gear 17 is driven by a power source 18 such as a motor placed within the housing 14.

33 is a channel-shaped handle that is fitted and fixed to the right end of the rotating shaft 7', and the handle 33 includes:
A long hole 34 in the radial direction is bored.

Reference numeral 35 designates an elliptical engagement piece whose ends match the notched recess 32, and a screw rod 36 is fixed approximately at the center thereof.

The engagement piece 35 is located on the left side of the handle 33, and the screw rod 36 is loosely fitted into the elongated hole 34.

Reference numeral 37 denotes a nut screwed onto the screw rod 36, and by screwing the nut 37, the board 35 can be fixed to an arbitrary location in the elongated hole 34. Note that for this purpose, the screw rod 36 is preferably stepped.

When the blade plate 9 is in the horizontal position shown in FIG.
Air can circulate inside, providing ventilation and other effects.

In this state, when the rotating shaft 7' is rotated in the direction of the arrow in FIG. When the vane plate 9 is reduced to 90 degrees and rotated by 90 degrees, the vane plate 9 becomes vertical.

The other blades 9 also include a crank arm 11 and a connecting piece 12.
and is similarly rotated via the connecting rod 13 to become vertical.

Then, the curved portions 8 of the vertically adjacent vanes 9 overlap with each other, completely blocking air circulation.

In this operation, the engagement piece 35 is inserted into the notch recess 32.
When the engagement plate 31 and the handle 33 are connected, the gear 17, the engagement plate 31, and the engagement piece 3 are connected by driving the power source 18 such as a motor.
5. The blade plate 9 can be automatically rotated through the screw rod 36, the handle 33, and the rotating shaft 7' to completely block air circulation.

If the engagement piece 35 is moved below the long hole 34 and the connection between the engagement plate 31 and the handle 33 is released,
Handle 33 can be manually rotated to similarly shut off air flow.

In this way, the present invention changes the damper operation from automatic to manual by simply engaging and disengaging the engaging piece 35.
Or you can switch from manual to automatic.

Therefore, for example, in a normal case, the power source 1
8 and the handle 33, and the power source 18 is configured to operate automatically in response to the activation of a fire alarm, and is used as a fire prevention shutter. 18 and the handle 33 can be disconnected to manually open and close the wing plate 9, which is convenient.

[Brief description of the drawings]

Figure 1 is a front view showing an embodiment of the present invention, Figure 2 is a front view showing an embodiment of the present invention;
The figure is a partially cutaway side view, FIG. 3 is a sectional view taken along the line -- in FIG. 2, and FIG. 4 is an exploded perspective view of the main parts. DESCRIPTION OF SYMBOLS 1... Frame body, 2... Side plate, 2a... Reinforcement rod, 3... Main body, 4... Mounting hole, 5... Flange, 6... Rivet hole, 7, 7'... Rotating shaft, 8... Curved part, 9... Wing plate, DESCRIPTION OF SYMBOLS 10... Shaft stop, 11... Crank arm, 12... Connection piece, 13... Connection rod, 14... Housing, 17...
Gear, 18... Power source, 31... Engagement plate, 31a... Small diameter portion, 32... Notch recess, 33... Handle, 34...
Long hole, 35...engaging piece, 36...screw rod, 37...nut.

Claims (1)

[Scope of utility model registration request] A plurality of rotating shafts to which vanes are fixed are provided in a frame body in conjunction with each other so as to be able to rotate synchronously so that adjacent vanes are partially overlapped with each other. In the damper, one of the rotating shafts is extended to the outside of the frame, and a handle and an engagement plate having a notched recess on the side surface are fixed to the extended part, and the handle is bored. A screw rod that is integral with the engaging piece is loosely fitted into the long hole, and the screw rod is fixed at a proper position in the long hole, so that the engaging piece can be inserted into and removed from the notched recess. An automatic/manual switching type damper characterized by a damper.