JPS6022225Y2 - shutter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter device used to shield entrances, windows, etc. of buildings, or as partitions that can be opened and closed.

A typical shutter device consists of a shutter unit consisting of a number of slats rotatably connected to each other, a winding mechanism that winds up this shutter unit, and a shutter that is located on both sides of an opening such as a window. It consists of a guide rail that guides the unit.

The slats that make up the shutter unit are generally made of elongated steel plates, and are connected so that they can rotate by a predetermined angle at engaging parts formed at adjacent ends. This makes it possible to wind it into a roll on a thin winding shaft.

However, this rotation in the engaging portion causes friction and collision between the slats and the guide rail, which causes noise when the shirt shirt is opened and closed.

Similar noise is also generated when the shutter unit vibrates due to wind or the like.

The present invention has been proposed in view of the above-mentioned points, and an object of the present invention is to provide a shutter device in which the raising and lowering operation of the shutter unit is smooth and the noise is low.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1A to 1F are side views showing the opening operation process of the shutter device of the present invention.

In FIG. 1, reference numeral 1 indicates a plurality of slats that, when interconnected in a predetermined relationship, constitute a shutter unit that blocks an opening such as a doorway or a window of a building.

Each slat 1 is constructed by attaching appropriate panels to a rectangular frame made of light metal such as aluminum and steel, and can be moved along guide rails 2 installed on both sides of the opening of the building.

When supported by the guide rail 2, the slats 1 are arranged in succession in the vertical direction so that their front surfaces are on the same plane (Fig. 1a), and the storage boxes connected to the upper end of the guide rail 2 are arranged continuously. When stored inside 3,
so that they are placed side by side (Fig. 1 f)
, and are interconnected by a link mechanism including link 4.

As shown in FIGS. 3 and 4, a long groove 5 is formed in the frame 1a of the slat 1 in the longitudinal direction, and one end of a shaft 6 passing through the long groove 5 has two opposing sides in the frame 1a. A roller 7 that transfers in contact with is attached to the other end, and a roller 8 (see FIG. 5) is attached to the other end.

On the other hand, the link 4 that bendably connects the slats is the second link.
As shown in the figure, a cam in which a pressing mechanism action start curved surface 4as, a slat push-in start curved surface 4b, a slat push-in curved surface 4c, and a push-in end curved surface 4d are successively formed is formed on the action surface for a pushing mechanism (one-way) to be described later.

This link 4 has one end attached to a nut (
It is fixed to the fixing part) 9 with a bolt (not shown), and the other end is supported by the roller shaft 6 of the adjacent slat 1.

Further, as shown in FIG. 5, the guide rail 2 has a cross section V
The upper end, which is inside the storage box, extends horizontally while changing direction in an arc shape.

Therefore, when the roller 8 inserted into the guide rail 2 moves using the opposing surface as a guide and moves to the horizontal portion, the slat 1 is suspended via the roller 8.

Note that in FIG. 5, the dashed-double line portion indicating the pressing mechanism (roller 19, etc.) that presses the link 4 when the slat 1 is raised is actually located at a symmetrical position on the opposite side with respect to the slat axis, but it is shown here for convenience. It is shown in the figure after being moved symmetrically.

Inside the storage box 3, a slat conveyance chain 11 is endlessly suspended between an upper chain gear 12 and a lower chain roller 13 in parallel with the guide rail 2.

A power transmission chain 15 is suspended between another gear (not shown) on the upper chain gear shaft and a chain gear 14 of a motor shaft (not shown) provided at the lower side of the storage box that does not interfere with the storage slat 1. It's being passed around.

The slat conveyance chain 11 is selected to engage with a rack 16 provided at the edge of the slat 1 at a position facing the slat 1 located at the upper end of the guide rail 2.

Therefore, when the conveyor chain 11 rotates to the left, the slat 1 rises, and when it rotates to the right, the slat 1 descends.

Furthermore, a slat pressing mechanism is provided in the storage box 3 to move the slat 1, which is moving along the guide rail 2, out of the movement path by acting on the connecting link of the slat.

As shown in FIGS. 6 and 7, this slat pressing mechanism includes an L-shaped lever attached to a bearing 17 in the storage box 3 with a shaft 21 so as to be able to rotate in one direction but not in the other direction. A roller 19 attached to the free end of this L-shaped bar 18
and a return spring 20 that acts on the vertical lever 18 so that the roller 19 is always located within the movement path of the link mechanism.

The opening operation of the shutter unit, that is, the operation of storing each slat 1 in the storage box 3 is performed by rotating the conveyance chain 11 to the left.

As the conveying chain 11 rotates, the slat 1 having the rack 16 engaged therewith rises along the guide rail 2 and enters the storage box 3.

Further, the subsequent slats 1 connected to this slat 1 are also pulled up along the guide rail 2.

At the final stage when the uppermost slat 1 enters the storage box 3, the link located at its lower end contacts the roller 19.

When the roller 19 is pressed upward along the length direction of the guide rail 2, the end surface 18a of the lever 1B comes into contact with the surface 17a of the bearing 17 and does not rotate, but when the roller 19 is pressed downward, the lever 18 Since the L-shaped bent portion is omitted in the arc shape 18b, the roller 19 rotates and retreats from the moving path of the link 4.

Therefore, when the slat 1 is raised, the pressing mechanism (one-way) of the link 4 starts working on the curved surface 4a, and then continues on the pressing starting curved surface 4.
b, comes into contact with the roller 19, the slat 1 receives a pressing force acting in a direction perpendicular to its front surface.

Furthermore, by contacting the push curved surface 40 with the force button 19,
The slat 1 is pushed into the storage box 3 by a strong pressing force and retreated from the path to allow the subsequent slat 1 to rise.

Next, the push-in end curved surface 4d comes into contact with the button roller 19, so that the pressing force disappears and the link 4 passes the position of the roller 19.

As a result, the succeeding slat 1 will rise with respect to the slat 1 in the storage box 3, and this relative movement will cause the link 4 to rotate approximately 90° clockwise around the slat fixing point. , and then rises as the roller 7 moves within the frame 1a.

This operation is repeated each time the cam of the subsequent link 4 reaches a position where it contacts the pressing roller 19, and each slat 1 is sequentially stored in the storage box 3.

This process is shown in Figures 1a-f.

Note that when the link 4 is suspended and stored in the storage box 3, it rotates approximately 90 degrees clockwise, resulting in a total rotation of approximately 180 degrees clockwise.

Further, near the upper end of the guide rail 2 inside the storage box 3, a slat transport direction changing mechanism 22 is provided to change the transport direction of the slat 1 from the vertical direction to the horizontal direction. The upper part of the slat 1 is pressed, the slat 1 is smoothly moved to the horizontal part of the guide rail 2, and the slat 1 is stored inside the storage box 3.

The operation of feeding out each slat 1 from the storage box 3 is performed by moving the conveyance chain 11 in the opposite direction to that described above.

As a result, the slat 1, in which the conveyor chain 11 and the rack 16 are engaged, descends along the guide rail 2, the link 4 pivotally attached to this slat 1 also descends, and the roller 7
When the slat 1 reaches the lower end of the frame 1a of the succeeding slat 1 and comes into contact with the movement range adjusting member 23 (described later), the succeeding slat 1 is pulled by the link 4 and rotates counterclockwise, and in this process it engages with the guide rail 2. It will be pulled out to the correct position.

The adjustment member 23 described above is adjusted by changing the amount by which it is screwed into the nut 24.

As described above, in the shutter device of the present invention, the mutually connected slats are arranged on the same plane on the guide rail, and are suspended in parallel within the storage box.

Therefore, unlike conventional shutter devices in which a large number of slats are rotatably connected to each other, large noises are not generated during opening and closing operations.

Furthermore, since it is not necessary to wind the slats into a roll, the height of each slat can be increased, thereby preventing unnecessary movement of the slats and suppressing the generation of noise due to vibration.

Moreover, since the movement of each slat is carried out smoothly by the engagement between the rack and the conveyor chain, there is little noise or vibration generated by the drive mechanism.

Furthermore, a cam is formed in the link that connects the slats in a flexible manner, in which a pressing mechanism action start curved surface, a slat pushing start curved surface, a slat pushing curved surface, and a pushing end curved surface are successively continuous, so that when the slats rise, the link does not act as a pushing mechanism. The starting curved surface reliably acts on the pressing mechanism inside the storage box.

Then, by the action of the subsequent slat push-in starting curved surface and the slat push-in curved surface on the pressing mechanism, the slat is smoothly pushed in the horizontal direction of the storage box and retreated from the movement path.
Furthermore, the push-end curve allows the link to pass through the position of the push mechanism.

As a result, the shutter unit can be smoothly raised.

[Brief explanation of the drawing]

Figures 1 a-f are side views showing the opening and closing process of the shutter device of the present invention, Figure 2 is a front view of the link of the present invention, Figure 3 is a front view of the frame to which the link is attached, and Figure 4 is FIG. 5 is a plan view of the frame, FIG. 5 is a sectional view showing a part of the guide rail and slats, FIG. 6 is a front view of the slat pressing mechanism, and FIG. 7 is a side view thereof. 1...Slat, 1a...Frame,
2... Guide rail, 3... Storage box, 4... Link, 5... Long groove, 6
...Axis, 7, 8...Roller, 9...
... Nut, 11 ... Slat conveyance chain, 12.14 ... Chain gear, 13 ...
... Chain roller, 15 ... Power transmission chain, 16 ... Rack, 17 ... Bearing, 18 ... L-shaped lever 19 ... ...Roller, 20...Return spring, 22......Slat conveyance direction changing mechanism.

Claims (1)

[Scope of utility model registration request] A plurality of rectangular slats are arranged on both sides and have an uneven cross section with a horizontal portion bent at a nearly right angle near the upper end, and a plurality of rectangular slats whose both ends are engaged with the guide rail 2 so as to be able to rise and fall freely. 1, a storage box 3 for slat steering, which is provided near the upper end of the guide rail 2 and stores the horizontal part of the guide rail 2 therein; Freely movable axis 6
a link 4 having a predetermined shape that connects the slats 1 by pivoting the other end to a fixing part 9 provided at the upper end of the adjacent slat 1; and a link 4 located near the storage opening of the storage box 3 and having the vertical slat pressing mechanisms 17 to 21 provided within the movement path of the link 4 within the guide rail 2 in the direction;
a slat conveyance chain 11 that is disposed in the axial direction of the vertical part inside the guide rail 2 and within the moving path of the locking part 17 provided on the side surface of the slat 1 and linked to a drive source; The above slat pressing mechanism 1 of link 4
The pressing contact surfaces 7 to 21 include a pressing mechanism action starting surface 4a,
A shutter device characterized in that a cam is formed in which a slat push-in start curved surface 4b, a slat push-in curved surface 4c, and a push-in end curved surface 4d are sequentially and smoothly continuous.