JPH04108798U - Winding type shutter device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a device for automatically stopping the shutter when it hits an obstacle when lowering the shutter, which has a simple structure and eliminates the need for precise adjustment work. [Structure] A limit switch and a rotatable switch plate are installed in the guide rail of the shutter, and a cam mechanism is provided between the lowest slat in the guide rail and the slat adjacent above it. When the lowest slat hits an obstacle, the cam mechanism moves to the extended position, rotates the switch plate, and turns off the limit switch. Attach the cam engagement member to the drain rail at the lowest end of the guide rail. The shutter is locked by the cam mechanism reaching the protruding position and engaging the cam engaging member.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a roll-up shutter device.

0002

[Conventional technology]

The conventional winding shutter device is as shown in Japanese Patent Application Laid-Open No. 2-296986. There are slats connected in multiple stages that can be expanded and contracted up and down, and a slat installed at the bottom end of the slats. A shutter consisting of a seat plate is provided on both sides of the shutter to guide opening and closing. installed on the guide rail for The top end of the shutter is rotated by an electric motor It is connected to a drivable winding shaft so that it can be wound or unwound. Seat at the bottom of the shutter The board is divided into an upper seat board and a lower seat board, and these are divided into an upper seat board and a lower seat board on both sides. They are connected by attaching a latch mechanism. The latch mechanism has two pieces of latch body. One end of each is foldably joined. The other end of each latch body When the bottom plate touches, the two latch pieces bend into a V shape and face the inner wall of the guide rail. It is rotatably attached to the sides of the upper and lower seat plates so that it protrudes once. guide tray A switch mechanism is installed in the shape of a strip along the opening and closing direction of the shutter on the inner wall surface of the shutter. Also, there is a locking hole on the inner wall of the guide rail at the bottom of the switch mechanism that engages the latch mechanism. is provided. When the shutter is lowering, the gap between the upper seat plate and the lower seat plate is widest. Therefore, the latch mechanism is straight, but the bottom edge of the shutter may hit an obstacle. When the upper seat plate touches the lower seat plate, the latch mechanism bends into a V shape and protrudes. and press the switch mechanism provided on the guide rail. This allows you to The lowering of the object stops. Also, when the shutter is fully closed, the lower seat plate Since the upper seat plate touches this, the latch mechanism bends into a V shape and protrudes. The protruding part fits into the locking hole of the guide rail. This will lock the shutter .

0003

[Problem that the idea aims to solve]

However, in the conventional roll-up shutter device as mentioned above, the latch mechanism is broken. The latch is designed to press the switch mechanism by bending and protruding. The position of the mechanism and the switch mechanism is too far apart, and the protruding part of the latch mechanism is The shutter may stop because it cannot reach the mechanism or the degree of pressure is insufficient. If the latch mechanism and switch mechanism are too close together, , there is a possibility of problems such as pressing too hard and damaging the switch. be. Therefore, it is necessary to strictly set the positional relationship between the latch mechanism and the switch mechanism. Therefore, it takes a lot of effort to make adjustments at the construction site. Also, the locking hole of the guide rail If the position is not aligned with the bent part of the latch mechanism when the shutter is fully closed, the folding The bent part may not fit into the locking hole, or the locking hole may be smaller than the bent part. If it is too large, the latch mechanism may not stay in the locking hole, so the guide rail In addition to requiring precise processing, accurate adjustments at the construction site are also required.

0004

[Means to solve the problem]

This invention includes a limit switch on at least one guide rail and a limit switch on at least one guide rail. A switch plate that can contact and separate from the switch, and a switch plate that can be rotated. A cam mechanism is provided, and the cam engages the drain rail when the shutter is fully closed. The above problem is solved by providing the engaging member. That is, the volume according to the present invention The removable shutter device has a shutter in which multiple slats are connected in multiple stages so that they can be expanded and contracted up and down, A shutter storage box is provided at the top of the shutter, and a shutter storage box is provided on both sides of the shutter. The guide rail that guides the vertical movement of the shutter, and the It has a draining rail installed at the lower end of the storage box. , a motor that can wind up or unwind the shutter, and the drive of the motor can be controlled. In a roll-up shutter device provided with a control circuit, at least one of the A switch plate that can rotate around a vertical rotation axis provided on the guide rail. and a spring that applies a force to the switch plate to rotate it in one direction. , when the switch plate is rotated to the stop position by the spring, it is turned on. and turns off when the switch plate is rotated in a direction that resists the spring force. and the lower end is fixed on the drain rail inside the guide rail. the cam engaging member, the lowermost slat end and the slat end adjacent to the upper side of this slat end; and a cam mechanism provided between the slats and the slats. A cam rotatably supported on the slat and a rod rotatably supported on the other slat. The slats are connected by a pin, and the cam mechanism has both slats extended together. in the non-protruding position, and in the protruding position when both slats are retracted from each other. The cam in the non-extended position does not exert any force on the switch plate, but the cam in the extended position is the positional relationship that moves the switch plate in a direction that resists the spring force. , and when the lowest slat descends to the position where it hits the draining rail. The cam mechanism is arranged so that the cam in the protruding position engages the cam engaging member. .

[0005] In other words, the roll-up shutter device according to the present invention has a lower slat (the lowest slat). The state in which the upper slat (the slat adjacent to the upper side of the bottom row) is extended from each other. Both slides are in the non-extended position when the A cam mechanism is installed between the cuts. Also, the spring causes the limit switch to move toward the limit switch. Can be pulled and rotated by a cam mechanism, and limited by rotation Install a switch plate inside the guide rail that can turn the switch on and off. This may cause the limit switch installation position to shift slightly, making it difficult to move the limit switch to turn off the power. Even if the amount of movement changes, the cam moves the switch plate a large amount, so it is reliable. The limit switch can be turned off. Also, just by removing obstacles , both slats extend each other and the cam returns to the non-extended position, so the spring The switch plate returns to its original position and turns on the limit switch, automatically starting the Shutter descent can be resumed. Also, when the shutter is fully closed, both slats are The cam mechanism protrudes and the cam engages the cam engaging member, causing the shutter to close. You can lock the data.

[0006]

【Example】

FIG. 1 shows the overall structure of a roll-up shutter device. The slat 10 has a hook 12 ( (see Figure 2), the shutter 14 is constructed by connecting multiple stages vertically and retractably. . The hook 12 is stored in the slat 10 when the upper and lower slats 10 are contracted together. be done. Guides are provided at both ends of the shutter 14 to guide the vertical movement of the shutter 14. A drail 16 is provided. At the top of the shutter 14, there is a rolled up shutter 14. A storage box 18 is provided for storing the , a motor 20 capable of winding or unwinding the shutter 14, and driving the motor 20. A control circuit 22 is provided that can control. This is inside the guide rail 16 on one side. A limit switch 24 is attached to the top of the circuit, and this is wired to the control circuit 22. Ru. Also, inside the guide rail 16 on the side where the limit switch 24 is attached. is provided with a switch plate 26 and a cam mechanism 27, which will be described later. Both guide rails A draining rail 28 is provided at the lowest end of the rails 16. Mizukiri The rail 28 is used to distribute rainwater etc. that flows down the shutter 14 to the outside. It has a structure where the indoor side is high and the outdoor side is sloped low (see Figure 2). .

[0007] In FIGS. 2 and 3, the guide rail 1 on the side where the limit switch 24 is provided The internal structure of 6 is shown. Inside the guide rail 16, a limit switch 24 is installed at the top. A rectangular switch plate is attached and located in contact with the limit switch 24. 26 is attached. The switch plate 26 is a piece of this as shown in FIG. The side end portion is fitted into a groove 30 formed in the guide rail 16, and this The part can be rotated as a rotating shaft 32 and is connected to the upper end of the guide rail 16. It is restrained by a set screw 34. The spring 36 is the switch plate 26 and the guide rail 16, and is operated by the tensile force of the spring 36. Therefore, the switch plate 26 is moved in the direction of the limit switch 24 around the rotating shaft 32. However, it hits the convex part 38 formed on the guide rail 16 and It does not rotate more than that. The lowest end of the switch plate 26 is the lowest end of the guide rail 16. It is installed above by a predetermined dimension. There is a strip in the vertical groove of the guide rail 16. The side ends of the rat 10 fit together, and the shutter 14 is guided in the vertical direction. . The lower slat 39 (lowest slat) and upper slat 40 (lowest slat) of the shutter 14 A cam mechanism 27 is installed between the upper and adjacent slats of the step. cam machine The structure 27 includes a cam 41, a rod 42 rotatably attached to the cam 41, and a rod 42 that is rotatably attached to the cam 41. and a compression spring 44 attached to the head 42. Cam 41 is The rod 42 is rotatably supported by the lower slat 39, and the rod 42 is rotatable by the upper slat 40. It is attached movably in the axial direction to a rod receiver 46 that is supported by. Also, Figure 4 As shown in the figure, there is a switch plate on the drain rail 28 at the bottom of the guide rail. A cam engagement member 48 is installed below 26. The cam engaging member 48 is mounted on a horizontal horizontal plate. It has a vertical L-shaped foot on both sides, and the bottom surface of both feet is the draining rail 2. It is fixed at 8. The height of the cam engaging member 48 is higher than the lowest end of the switch plate 26. It is set slightly lower.

[0008] Next, the operation when the shutter 14 is lowered will be explained. stored in storage box 18 The lower slat 39 is opened by operating the motor 20. It descends sequentially from During descent, hook 1 connects adjacent upper and lower slats 10 2 is in an extended state. When the hook 12 is in the extended state, the cam mechanism 27 is shown in FIG. It will be in the state shown.

[0009] Next, the limit switch 24, switch plate 26, cam mechanism 27, etc. The operation of the failure stop mechanism, which is composed of Shutter 14 on the way down, bottom When the slat 39 hits the obstacle 50, the lower slat 39 and the upper slat The distance from the upper slat 40 is narrowed, and the hook 12 is housed within the upper slat 40. this As a result, the rod 42 tries to be pushed upward through the rod receiver 46. , since the compression spring 44 is provided between the rod receiver 46 and the cam 41. , the rod 42 is thereby pushed back. This pushes the cam 41 downward. The force acts, the cam 41 rotates, and the cam mechanism 27 assumes the protruding position. protruding cam 4 1 is a spring 3 connected to a switch plate 26, as shown in FIG. The switch plate 26 is rotated by overcoming the pulling force of 6. switch pre As the plate 26 rotates, the switch plate 2 is removed from the limit switch 24. 6 leaves, the power is cut off. By cutting off the power supply, the power supply to the motor 20 is stopped. Then, the shutter 14 stops lowering. When the obstacle 50 is removed, the lower slat 39 is lowered and the distance between it and the upper slat 40 is widened, so that the hook 12 is extended. child As a result, the cam mechanism 27 returns to the non-extruding position, and the switch plate 26 returns to the limit position. Since contact is made with the shut switch 24, the power supply is restarted and the shutter 14 begins to lower. Ru.

0010 Next, the operation of the locking mechanism constituted by the cam mechanism 27 and the cam engaging member 48 I will explain about it. As shown in FIG. 7, the slat 10 has finished descending to the lowest level. Then, the lower slat 39 comes into contact with the draining rail 28 and the distance between the lower slat 39 and the upper slat 40 becomes narrower. As a result, the hook 12 is housed within the upper slat 40. As a result, obstacle 5 The cam 41 rotates in the same way as when stopped by 0. The rotated cam 41 is a cam When engaged with the engaging member 48, the shutter 14 is locked. At this time switch play Since the switch plate 26 does not rotate, the switch plate 26 and limit switch 24 are not in contact. The power is on and the power is on. Also, the locked shutter 14 is applied to an external force. Therefore, if you try to open it, the cam 41 will not be pushed upward together with the slat 10. As a result, a force is applied to the cam engaging member 48 and pushing the cam engaging member 48 upward. However, the cam engaging member 48 is fixed to the drain rail 28 and cannot be pushed up. stomach. Therefore, the shutter 14 cannot be opened by external force.

[0011] On the other hand, when opening the shutter 14 in normal operation, the shutter 14 is Since it is wound up into the storage box 18 sequentially from the upper slat 10, the upper slat 40 The hook is pulled upward, the gap between the lower slat 39 and the upper slat 40 is opened, and the hook 12 is in an extended state. As a result, the cam 41 rotates, and the cam mechanism 27 The lock is automatically released to return to the starting position.

0012 The locking mechanism of the shutter 14 is not limited to the above embodiment, and for example, FIGS. 9 and 1 0, a switch plate 26 may be used instead of the cam engaging member 48. good. The lowest end of the switch plate 26 is above the cam 41 position when the shutter is fully closed. Since the cam 41 rotates when the shutter 14 is fully closed, the switch press It enters the space between the lowermost end of the port 26 and the draining rail 28. This allows shutter 1 4 is locked. If you try to open the shutter 14 with external force in this state, the cam 4 1 has entered the lower part of the switch plate 26, so the switch is not activated by the cam 41. The switch plate 26 will be lifted upward, but the top of the switch plate 26 will be The switch is secured to the guide rail 16 by the retaining screw 34. The chip plate 26 cannot be lifted. Therefore, the external force 14 cannot be opened.

[0013]

[Effect of the idea]

As explained above, according to the present invention, the switch mounted inside the guide rail A simple mechanism consisting of a cam mechanism attached to the end of the latch plate and slat prevents obstructions. A stop function is obtained, and the cam mechanism and cam engagement member installed on the draining rail make it possible to Manufactures a multi-functional roll-up shutter device with a small number of parts, such as a roll-up function. As a result, productivity can be improved. In addition, the parts used are inexpensive parts. Therefore, it can be provided at a low price. Electrical Since no special equipment is required, troubles due to electrical causes do not occur. simple machine structure, the guide rail can be made compact and has excellent design. Become something. In particular, the fault stop mechanism rotates the switch plate by a cam mechanism. The configuration is such that the limit switch is turned off when the switch plate is turned off by the cam. A slight rotation turns off the limit switch, while the switch plate is rotated Rotation does not cause any side effects. Therefore, limit switches and Is it not necessary to adjust the mounting position of the cam mechanism, or is the adjustment work extremely simple? Ru.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the overall configuration of the present invention.

FIG. 2 is a side view of the inside of the guide rail.

FIG. 3 is a view of the guide rail viewed from above.

FIG. 4 is a front view of the lower part of the guide rail.

FIG. 5 is a diagram showing the state of the cam mechanism when an obstacle is detected.

FIG. 6 is a top view of the inside of the guide rail when an obstacle is detected.

FIG. 7 is a diagram showing the state of the cam mechanism when the shutter is fully closed.

FIG. 8 is a top view of the inside of the guide rail when the shutter is fully closed.

FIG. 9 is a diagram showing the state of the cam mechanism when the shutter is fully closed in another embodiment.

FIG. 10 is a top view of the inside of the guide rail when the shutter is fully closed in another embodiment.

[Explanation of symbols]

10 slats 12 Hook 14 Shutter 16 Guide rail 18 Storage box 20 motor 22 Control circuit 24 Limit switch 26 Switch plate 27 Cam mechanism 28 Draining rail 36 Spring 39 Upper slat (lowest slat) 40 Lower slat (slat adjacent to the top of the bottom row) 41 Cam 42 Rod 44 Compression spring 46 Rod holder 48 Cam engaging member

Claims (1)

[Scope of utility model registration request] Claim 1: A shutter in which a number of slats are connected in a vertically expandable and retractable manner, a shutter storage box provided at the top of the shutter, guide rails provided on both sides of the shutter to guide vertical movement of the shutter, and both guides. a draining rail provided at the lower end of these rails across the rails;
In a roll-up shutter device in which a storage box is provided with a motor capable of winding or unwinding the shutter, and a control circuit capable of controlling the drive of the motor, at least one of the A switch plate that can be rotated around a vertical rotation axis provided on a guide rail, a spring that applies a force to the switch plate to rotate it in one direction, and a switch that is turned on when the switch plate is rotated to the stop position by the spring. , a limit switch that turns off when the switch plate is rotated in a direction that resists the force of the spring, a cam engagement member whose lower end is fixed on the drainage rail inside the guide rail, and the end of the lowest slat. and a cam mechanism provided between the upper and adjacent slat ends, the cam mechanism including a cam rotatably supported by one slat and a cam rotatably supported by the other slat. The cam mechanism is connected to the supported rod by a pin, and the cam mechanism is in a non-projecting position when both slats are extended.
When both slats are retracted from each other, they are in a protruding position;
The cam in the non-protruding position does not apply force to the switch plate, but the cam in the protruding position moves the switch plate in a direction that resists the force of the spring, and the lowest slat is in a position where it hits the draining rail. 1. A roll-up shutter device characterized in that a cam mechanism is arranged so that when the cam is lowered to a lower position, the cam in the protruding position engages with the cam engaging member.