JPH0740994U - Obstacle Detecting Device in Architectural Electric Shutter - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] When the seat plate contacts an obstacle and the latch for locking is projected to detect the obstacle, the seat plate is forcibly lifted when the obstacle is detected. However, make sure that the latch does not bite into the tape switch. [Structure] A latch 1 whose base end is pivotally supported by a movable seat plate 11.
1 is formed with a guide hole 12 consisting of a first guide hole 12a directed from the direction of the tip to a right-angled corner, and a second guide hole 12b facing from the corner to the base and the tip. The latch 11 protrudes at a stage before the movable seat plate 10 moves to the fixed seat plate 9 side and abuts on the fixed seat plate 9 by locking the planting guide pin through the fixed seat plate 9 through 12. An obstacle detection device in an electric shutter for construction, which is configured to detect and to guide the guide pin 13 to the second guide hole 12b to retract the latch 11 when the upper movement is further detected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an obstacle detection device in an electric shutter for a building which is built in an entrance / exit of a building, a house or the like or an opening such as a window.

[0002]

[Problems to be Solved by Prior Art and Invention]

 In general, as this type of building shutter, the side edge of the shutter curtain is guided by a guide rail standing at the opening to vertically move up and down to open and close the opening. When such a building shutter is of the electric type in which the shutter curtain is moved up and down by the drive of the switch, a function is required to prevent obstacles from being caught during the descent of the shutter curtain. , The seat plate provided at the lowermost end of the shutter curtain is moved upward from the fixed seat plate and the self-weight drooping position which is located under the fixed seat plate and is separated from the fixed seat plate at a certain interval. It is composed of a movable seat plate that is vertically movable on the fixed seat plate so that it comes into contact with the fixed seat plate. The movable seat plate locks in conjunction with contact with an obstacle and lifting to the fixed seat plate side. Of the shutter for projecting to the guide rail side, and the projecting latch presses the tape switch for obstacle detection laid on the guide rail to switch it, thereby detecting the obstacle and detecting the obstacle. To make an emergency stop There are things you have.

By the way, in such a configuration in which the tape switch provided on the guide rail side is switched by the protrusion of the locking latch associated with the upward movement of the movable seat plate, the person who puts the seat plate in an emergency stop state There are times when you consciously lift it or lift it reflexively, and in such a case, the latch protrudes further and penetrates deeply into the tape switch, which may damage not only the tape switch but also the latch itself. Even if an obstacle is removed and it is tried to recover, there is a problem that it is difficult to restore the bite of the latch.

[0004]

[Means for Solving the Problems] The present invention was conceived with the object of providing an obstacle detection device in an electric shutter for construction that can eliminate these drawbacks in view of the above-mentioned circumstances. In the electric shutter for construction, the side edge of the shutter curtain is guided by the guide rails installed upright in the opening to open and close the opening. The seat plate at the lower end is moved vertically from the fixed seat plate so that it comes into contact with the fixed seat plate and contacts the fixed seat plate by moving upward from its own weight hanging posture that is located below the fixed seat plate and separated from the fixed seat plate. It is composed of a movable seat plate that is freely supported, and at the same time, a locking latch whose base end is swingably supported by the movable seat plate and a guide rail for switching by the protrusion of the latch. Obstacle detection te It is equipped with a push switch and a guide pin that is planted on the fixed seat plate side, and the latch switches the tape switch by projecting the ratchet at a midway position before the movable seat plate abuts the fixed seat plate from its own weight hanging posture. In order to guide the guide pin, the guide pin is extended so that the latch can be displaced to the retracted position when the movable seat plate moves upward beyond the middle position. The feature is that a second guide hole for guiding is formed.

With this configuration, the present invention forcibly lifts the seat plate in this obstacle detection state, while the latch projects and the tape switch is pressed when it comes into contact with the obstacle. However, it is designed to prevent the latch from biting into the tape switch.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter installed in an opening such as a window. The shutter 1 is a guide rail 2 integrally installed on both left and right sides of the opening, and both side edges of the guide rail 2 are closed. The shutter curtain 3 which is moved up and down to open and close the opening, the winding drum 4 which winds and unwinds the shutter curtain 3, the shutter case 5 which houses the winding drum 4 and the winding drum 4 are properly installed. It is the same as the conventional one that it is configured by using various member devices such as the opening / closing device 6 that can be rotated in the reverse direction.

A tape switch 7 is laid on the groove bottom surface 2a of the guide rail 2 from the upper end to the lower end. The tape switch 7 presses the tape surface with a force larger than its restoring force. By doing so, it elastically deforms into a depression and switches, thereby detecting an obstacle and performing an emergency stop of the shutter curtain 3 (for the shutter curtain after the emergency stop, the stopped state is maintained. It is also possible to carry out the above-mentioned operation, or it is also possible to carry out a reverse ascent, and it is possible to carry out an arbitrary ascending / descending stop control). On the other hand, the shutter curtain 3 is formed by connecting a plurality of slats 3a in series in the vertical direction. At the lowermost end, there is a seat plate 8 which constitutes the obstacle detection device of the present invention. Are connected. The seat plate 8 is composed of a fixed seat plate 9 located above and connected to the slats 3a, and a movable seat plate 10 provided below the fixed seat plate 9. A fitting groove 9a is formed on the lower side of the movable seat plate 10 and is formed in a dovetail-like shape. The fitting groove 9a is formed in the upper and lower portions of the movable seat plate 10 integrally with the fitting groove 9a. The locking portion 10a is fitted so as to be vertically movable. In the state before the movable seat plate 10 is in the fully closed position in which the movable seat plate 10 is in contact with the floor surface, the locking portion 10a is engaged with the opening of the fitting groove 9a by the weight of the fixed seat plate 9 so as not to come out. It hangs down until it stops, and is separated from the fixed seat plate 9, but by the relative push-up from below, the position where the locking portion 10a abuts the groove bottom (groove upper surface) of the fitting groove 9a. It is set so as to rise relative to the fixed seat plate 9.

Further, locking latches 11 are provided on both right and left sides of the seat plate 8, and the above-mentioned tape switches 7 are pressed by the latches 11. That is, the latch 11 is formed of a plate material having a substantially right triangle shape, but the base end portion of the latch 11 is swingably supported by the movable seat plate 10 via the pin 11a and the tape 11 is formed. A twisting elastic machine 11b having a force less than the restoring force of the switch 7 urges the tip end in a direction projecting from above toward the tape switch 7 side (counterclockwise rotation in FIG. 3). is doing. In addition, in the right-angled corner portion of the latch 11, a first guide hole 12a directed from the corner portion toward the tip portion and a second guide hole 12b directed from the corner portion to the base end portion and the tip portion are provided. A V-shaped guide hole 12 is formed, and the guide pin 12 planted in the fixed seat plate 9 is engaged with the guide hole 12 through the guide hole 12. Reference numerals 9b and 10b denote holders for the latches 11 provided on the fixed seat plate 9 and the movable seat plate 10, respectively.

As shown in FIG. 3, the guide pin 13 is located on the tip side of the first guide hole 12a in the self-weighted posture of the fixed seat plate 10, and in this state, the latch 11 is stored. The posture is such that there is no protrusion to the tape switch 7 side. From this state, as the movable seat plate 10 moves upward relative to the fixed seat plate 9 and approaches the fixed seat plate 9, the guide pin 13 moves to the corner portion side through the first guide hole 12a. As a result, the latch 11 gradually projects. Then, when the movable seat plate 10 reaches an intermediate stage before contacting the fixed seat plate 9, as shown in FIG. 7, the latch 11 has a side portion 11c between a corner portion and a tip portion which is oriented in a substantially horizontal direction. The guide pin 13 is located in the corner of the guide holes 12a and 12b, and the inner side 12c of the corner portion is in contact with the guide pin 13 in this posture. As a result, the retracting of the latch 11 to the storage posture side is restricted and the projecting posture is maintained, and as described later, the tape switch 7 can be pressed against the restoring force. There is.

When the movable seat plate 10 further moves toward the fixed seat plate 9 from this middle stage, the latch 11 moves upward with respect to the guide pin 13, so that the guide pin 13 has both guide holes 12 a and 12 b. The guide pin 13 is moved from the corner portion of the latch 11 to the second guide hole 12b side, whereby the latch 11 is released from the immersion regulation by the inside edge 12c of the corner portion and the guide pin 13 is moved to the second guide hole. It becomes a retractable state in which it can move toward the immersive posture side up to the tip of the hole 12b, and in this state, a force exceeding the stored force of the twisting machine 11b, for example, the restoring force of the tape switch 7 as shown in FIG. Is operated, the latch 11 is set so as to swing and retract toward the immersive posture side to be in the retracted posture.

On the other hand, 14 is a security hook integrally provided at the lowermost end of the guide rail groove bottom surface 2 a. The security hook 14 has the movable seat plate 10 on the floor surface when the shutter curtain 3 descends. It is set at the lowest position that does not prevent the latch 11 from swinging from the stowed position to the projecting position in the process in which the movable seat plate 10 is in contact with the fixed seat plate 9 from the state of being just in contact with F. Below the security hook 14, there is no tape switch 7 or any other member for pressing the latch 11 toward the stowed position. As a result, the latch 11 receives the force accumulated by the twist ammunition machine 11b. When the seat plate 8 is lifted, the projecting latch 11 comes into contact with the security hook 14 to restrict the upward movement, and the shutter curtain 3 is applied. It is designed to lock.

In the embodiment of the present invention configured as described above, the opening / closing operation of the shutter curtain 3 is performed by the vertical movement of the shutter curtain 3 accompanying the forward / reverse driving of the opening / closing device 6. If an obstacle is encountered during the lowering operation of the shutter curtain 3, when the movable seat plate 10 comes into contact with the obstacle, the movable seat plate 10 is relatively moved upward toward the fixed seat plate 9 side. As described above, the latch 11 is projected by receiving the guiding action of the guide pin 13, and reaches the middle position where the guide pin 13 comes into contact with the inner side 12c of the corner portion of the guide hole 12, and the latch 11 is stored at the storage position by the guide pin 13. Since the swinging to the side is regulated, the tape switch 7 is pressed, whereby an obstacle is detected and an emergency stop is made.

As described above, in the embodiment of the present invention, when the movable seat plate 10 comes into contact with the obstacle, the latch 11 projects and the tape switch 7 is pressed to detect the obstacle. When a person forcibly lifts the seat plate 8 in this state, the latch 11 is linked to this and the latch 11 is lifted with respect to the guide pin 13, so that the swinging regulation to the storage position side is automatically performed. When the latch 11 is released, the restoring force of the tape switch 7 acts on the latch 11, and the latch 11 automatically swings to the retracted position side against the stored force of the torsion ammunition 11b. Then, the latch 11 is brought into contact with the surface of the tape switch 7 which has been restored to be flush, and is lifted in this state, so that the latch 11 does not bite into the tape switch 7 and has a flush surface. Do not slide To rise. As a result, even if the shutter curtain 3 that is stopped due to an obstacle is forcibly lifted, the latch 11 that is maintained in the projecting position as in the conventional case receives a load in the direction that bites deeply into the tape switch 7. Therefore, the tape switch 7 and the latch 11 are not damaged and can be reliably protected.

Moreover, in this structure, since the projection direction of the latch 11 is on the left and right outer sides, the shape of the latch 11 can be made thin, the seat plate itself can be made light and compact, and the latch for locking can be locked. Since 11 can be used as an obstacle detection member as it is, the number of parts can be reduced and the structure can be simplified because the parts can be commonly used.

Further, in this case, when the movable seat plate 10 hits an obstacle in a state where it is lowered beyond the detection range of the tape switch 7, the shutter curtain 3 is lowered to a fully closed state. On the other hand, the latch 11 is projected just above the crime prevention hook 14. However, in this case, the movable seat plate 10 is in a retractable state in which the movable seat plate 10 comes into contact with the fixed seat plate 9 without remaining at an intermediate stage where the return of the ratchet 11 to the retracted posture is restricted. When the lever 11 and the security hook 14 are pushed and retracted, an unreasonable load is not applied to the latch 11 and the security hook 14, and the lock is automatically locked when the obstacle is removed.

[0016]

[Operation effect]

 In short, since the present invention is configured as described above, the shutter curtain is vertically moved up and down with the forward / reverse drive of the opening / closing device.However, the movable seat plate is obstructed during the downward movement of the shutter curtain. When the movable seat plate moves relative to the fixed seat plate side relative to the fixed seat plate, the locking latch is moved to the middle position before it comes into contact with the fixed seat plate by the guiding action based on the first guide hole of the guide pin. In this case, the protruding tape switch is pressed to detect obstacles, which causes the shutter curtain to make an emergency stop.However, in this state, if the seat board is forcibly lifted, the latch Is subject to the guiding action based on the second guide hole of the guiding pin, and is displaced to the retracted position retracted from the tape switch. As a result, the latch can be prevented from digging into the tape switch, and even if the shutter curtain that has been emergency stopped due to an obstacle detection is forcibly lifted, the tape switch and the latch will not be destroyed, and it will be reliable. Can be protected.

[Brief description of drawings]

FIG. 1 is an overall front view of an electric shutter for construction.

FIG. 2 is a partial cross-sectional plan view of a construction electric shutter.

FIG. 3 is an enlarged front view of a main part of the electric shutter for construction.

FIG. 4 is a sectional view for explaining the action of the seat plate.

FIG. 5 is a side view showing a state where the seat plate hangs by its own weight.

FIG. 6 is a side view showing a fully closed state of the seat plate.

FIG. 7 is a schematic front view of an obstacle detection device showing an obstacle detection state.

FIG. 8 is a schematic explanatory diagram of an obstacle detection device when a seat plate is forcibly moved upward.

[Explanation of symbols]

 1 Shutter 2 Guide rail 3 Shatter curtain 4 Winding drum 5 Shatter case 6 Opener 7 Tape switch 8 Seat plate 9 Fixed seat plate 9a Fitting groove 10 Movable seat plate 10a Locking part 11 Latch 11a Pin 11b Torsional ammunition machine 12 guide hole 12a 1st guide hole 12b 2nd guide hole 13 guide pin 13 14 crime prevention hook

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideyuki Echigo, 70 Hayakawa, Takaoka City, Toyama Prefecture, Sankyo Aluminum Industry Co., Ltd. (72) Atsushi Okada, 70 Hayakawa, Takaoka City, Toyama Prefecture, Sankyo Aluminum Industry Co., Ltd. Within

Claims (1)

[Scope of utility model registration request] 1. A construction electric shutter comprising a guide rail provided upright in the opening so that the side edge of the shutter curtain is guided to open and close the opening. The seat plate at the lowermost end of the curtain is moved up and down from the fixed seat plate so that it abuts against the fixed seat plate by moving downward from its own weight hanging posture that is located below the fixed seat plate and separated from the fixed seat plate. It is composed of a movable seat plate that is supported so as to be movable in any direction, and a locking latch whose base end is swingably supported by the movable seat plate, and a guide rail for switching when the latch projects. It is equipped with an installed tape switch for detecting obstacles and a guide pin for planting on the side of the fixed seat plate.The latch has a latch projecting at a midway position before the movable seat plate abuts the fixed seat plate from its own weight hanging posture. In order to change the tape switch, A first guide hole for guiding the guide pin and a guide pin extended from the first guide hole so that the latch can be displaced to the retracted posture when the movable seat plate moves upward beyond the intermediate position. An obstacle detection device in an electric shutter for construction, wherein a second guide hole is formed.