JP2004324333A - Regulating movable safety fence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a regulating movable safety fence easily installed and removed and positively detecting a walker to call his or her attention with voice. <P>SOLUTION: This regulating movable safety fence is provided with a pair of partition walls preventing the entry of the walker to a working area, and an instrument box provided between the pair of adjacent partition walls and connected to the side edges of the adjacent partition walls through hinges to connect the pair of partition walls in a bendable manner. A detecting sensor for detecting the approach of the walker to the partition walls, a means for reproducing voice guidance according to the detection result of the detecting sensor, and a battery for driving the reproducing means, are built in the instrument box. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a regulating movable safety fence for preventing a pedestrian from falling into an opening of a floor or for restricting a pedestrian from entering a work area, for example, when inspecting equipment such as an escalator and an elevator. .
[0002]
[Prior art]
[Patent Document 1] JP-A-2002-173919
[Patent Document 2] JP-A-2000-178930
[Patent Document 3] JP-A-2000-235683
[0003]
For example, an opening for entering and exiting the machine room is provided on the floor near the entrance of the escalator, and the opening is usually covered with a removable hatch. However, at the time of maintenance and repair work of such an escalator, it is necessary to remove the hatch and enter and exit the machine room, and when performing inspection and repair work of an escalator installed at a place with many pedestrians such as a station premises or an office pill. It is necessary to divide the periphery of the opening with a safety fence and take care that a pedestrian does not fall into the opening. This is for inspection and repair work of elevators, that is, for inspection and repair work of such elevators with the door to the elevator shaft opened, and for various inspection and repair work such as electrical work and telephone wire work. The same applies to the case where the work is performed by opening the manhole provided on the floor surface. In addition, in various inspection and repair operations, it is often dangerous if a pedestrian enters the work area. Therefore, it is necessary to partition the work area from a pedestrian passage.
[0004]
Conventionally, as a safety fence used to separate the opening provided on the floor surface and the work area for inspection and repair from the pedestrian passage, it is necessary to reduce the labor of carrying the worker and to use it without using it. In order to improve the storability at the time, there has been known one formed so as to be able to expand and contract or bend freely. For example, in a safety fence disclosed in Japanese Patent Application Laid-Open No. 2002-173919, a curtain is displayed between telescopic legs to indicate that inspection is being performed. While a large work area can be partitioned from the pedestrian passage, the legs are shortened when not in use, thereby being excellent in portability and storage.
[0005]
Further, in the safety fence disclosed in Japanese Patent Application Laid-Open No. 2000-178930, a plurality of panels are connected in a bellows shape via hinges, and when used, a large work area is partitioned from a pedestrian passage by extending the panels. On the other hand, when not in use, the panels are folded so as to overlap each other, so that they can be stored compactly in a storage location.
[0006]
Furthermore, if the traffic volume of pedestrians is large, such as in a station yard, etc., the safety fence itself is difficult to visually recognize, and sufficient consideration must be given to the elderly and visually impaired. In the inspection and repair work, etc., it is natural that the safety fence is installed.However, an instructor is further arranged near the safety fence, and it is necessary to provide sound guidance as needed to perform the inspection and repair work. Has been done.
[0007]
[Problems to be solved by the invention]
Such arrangement of the guide is necessary from the viewpoint of ensuring safety, and is particularly effective for inspection and repair work in a crowded crowd such as in a station yard. However, it is necessary to secure an instructor in addition to workers, and in the case of long-term repair work, it is also necessary to secure factors to replace the instructor, which increases labor costs, which leads to inspection and repair costs. There was a problem that it bounced back.
[0008]
On the other hand, an alarm device that can be detachably attached to the safety fence has been disclosed as a device that prompts a pedestrian to call attention without arranging a guide member (Japanese Patent Application Laid-Open No. 2000-235683). This alarm device is equipped with a human body detection sensor. Each time this sensor detects a pedestrian, the previously recorded announcement is automatically played back, and the presence of a safety fence and inspection / repair for the pedestrian It is configured to notify by voice that work is in progress.
[0009]
However, since this alarm device is completely separate from the safety fence, it is necessary for the operator to separately install the safety fence in the work area and attach the alarm device to the safety fence. The work of installing and removing the safety fence was very troublesome. In addition, since the safety fence divides the opening or the working area of the floor from the pedestrian passage, its installation position and installation direction are limited to some extent, but the alarm device is hooked on the safety fence. When mounted in such a manner, the direction of the alarm device is restricted by the installation direction of the safety fence. For this reason, depending on the positional relationship between the installation location of the safety fence and the pedestrian passage, the human body sensor cannot properly face the flow of the pedestrian, and the presence of the safety fence and the There was also a problem that it was not possible to reliably announce that inspection and repair work was in progress.
[0010]
SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and it is an object of the present invention to easily perform installation and withdrawal work and to reliably detect a pedestrian to call attention by voice. It is to provide a possible movable safety fence for regulation.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the movable movable safety fence of the present invention is provided between a pair of partition walls that prevent a pedestrian from entering the work area and a pair of partition walls adjacent to each other, A device box that is connected to a side of each of the adjacent partition walls via a hinge, and connects the pair of partition walls in a bendable manner. It is characterized by incorporating a detection sensor for detecting approach, means for reproducing voice guidance in accordance with the detection result of the detection sensor, and a battery for driving the reproduction means.
[0012]
According to such technical means, a device box is provided between a pair of partition walls adjacent to each other, and a pedestrian detection sensor and a voice guidance reproducing means are built in the device box. Because it is connected to the wall via a hinge, even when a pair of adjacent partition walls are expanded at a specific angle, the equipment box provided between these partition walls is not It is possible to direct in any direction without being restricted by the expansion angle. Therefore, the detection sensor can always face the direction in which the pedestrian is considered to frequently approach the safety fence, and the approaching pedestrian is reliably detected, It is possible to timely reproduce voice guidance for calling attention.
[0013]
Further, in the safety fence of the present invention, the detection sensor and the voice guidance reproducing means are incorporated in a device box together with a battery for driving them, and the device box has a structure for connecting a pair of partition walls to bend freely. Since they function, the detection sensor, the reproducing means, and the partition wall are compactly integrated, and there is no need to separately install or withdraw the partition wall and install or withdraw the audio guidance playback device. . Therefore, the worker who performs inspection and repair work such as escalator etc. should install this safety fence so as to surround the work area, and at that time only turn on the detection sensor built in the equipment box and the start switch of the regeneration means And the handling can be made very simple.
[0014]
In the safety fence of the present invention configured as described above, it is possible to mount all means for calling a pedestrian's attention. For example, it is conceivable to incorporate an LED array that blinks and emit light inside the partition wall, or to incorporate a flashlight that emits light instantaneously in the equipment box. In that case, it is also possible to use the detection result of the pedestrian detection sensor and blink the LED array or the strobe light only for a predetermined time after the detection of the pedestrian by the detection sensor. Considering the ease of installation and removal of the safety fence, it is preferable that the battery that drives these LED arrays and strobe lights is built into the safety fence itself, reducing the consumption of the built-in battery and enabling long-term use In view of the above, it is preferable to control the light emission of the LED array and the strobe light using the detection result of the pedestrian detection sensor.
[0015]
Each partition wall connected to the equipment box may be formed of a single partition plate, but from the viewpoint of enclosing a wider working area, a plurality of partition plates are hinged. It may be configured to be foldably connected. When a partition wall is formed by connecting a plurality of partition plates in a foldable manner as described above, in consideration of the transportability and storability of such a safety fence, the width of the device box is folded so that the partition plates overlap each other. Preferably, it substantially matches the thickness. For example, if each partition wall is composed of two partition plates, the width of the device box may be approximately equal to the thickness of the two partition plates. If the equipment box has such a width, the safety fence may be folded such that the two dividers directly connected to the equipment box are the outermost and the other dividers are accommodated between these dividers. It becomes possible, and the safety fence itself can be folded compactly.
[0016]
Furthermore, the hinge for connecting the device box and each partition wall and the hinge for connecting the partition plates at each partition wall include a lock mechanism for prohibiting rotation in the other direction even if rotation in one direction is allowed. It is preferred that it is. If such a lock mechanism is provided, by operating such a lock mechanism, it is possible to prevent the pedestrian from entering the work area, and to allow the worker to leave the work area. Workers can perform inspection and repair work smoothly while ensuring the safety of workers.
[0017]
The work area defined by the safety fence of the present invention is not limited to an area where inspection and repair work such as an escalator and an elevator is performed.For example, a dangerous place or a temporary material storage area in a building premises, It includes an area where it is desired to temporarily restrict the pedestrian's approach.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the movable safety fence for regulation of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an example of a movable safety fence for pedestrian control to which the present invention is applied. The safety fence 1 is erected on the floor near the entrance / exit when performing inspection / repair work of the escalator M, for example, and covers the periphery of the opening to the machine room provided on the floor of the entrance / exit. It is used for the purpose of demarcating a pedestrian passage around an entrance and a work area where inspection and repair work is performed. As shown in FIG. 1, the safety fence 1 includes four partition plates 3a, 3b, 3c, 3d each having a leg portion 2 and a hinge 4 for connecting adjacent partition plates in a swingable manner. In addition, the work area is arranged so as to be surrounded by these partition plates 3a, 3b, 3c, 3d, so that the work area can be made independent. Although the safety fence shown in FIG. 1 is composed of four partition plates 3a, 3b, 3c and 3d, an arbitrary number of partition plates are connected via hinges 4 according to the size of the work area and the like. It is possible. Further, by repeatedly connecting a plurality of partition plates in this manner, it is possible to divide a relatively large area such as a temporary material storage area from the pedestrian passage.
[0019]
FIG. 2 is a diagram showing two partition plates 3b, 3c located at the center among the four partition plates 3a, 3b, 3c, 3d and a connection state thereof. Each of the partition plates 3a, 3b, 3c, 3d is composed of vertically and horizontally arranged metal frames 30, 31, and resin display plates 32a, 32b, 32c fitted in the frames 30, 31. The vertical frames 30 arranged on the left and right also serve as the legs 2 of the partition plates 3a, 3b, 3c, 3d. The height of the partition plate is 1100 mm, and is set to a height at which the pedestrian cannot easily straddle from the viewpoint of reliably preventing the pedestrian from entering the work area. The display plates 32a, 32b, and 32c are arranged in three stages in the frame. A display indicating "under inspection" is displayed on the middle display plate 32b, and an inspection operation is performed on the lower display plate 32c. The name of the worker who is performing is described. Further, an LED array 33 is incorporated in the display plate 32a provided at the uppermost part. When a switch (not shown) is turned on, the LED array 33 blinks so as to form a light line, and is safe even in darkness. The presence of the fence 1 can be clearly shown to pedestrians.
[0020]
The partition plate 3a and the partition plate 3b, and the partition plate 3c and the partition plate 3d are directly connected to each other by the hinge 4, but the partition plate 3b and the partition plate 3c are connected via the equipment box 5. That is, the hinge 4 couples between the partition plate 3b and the equipment box 5 and between the partition plate 3c and the equipment box 5, in other words, the partition boxes 3a and 3b where the equipment box 5 is located on the left and right. And the partition wall 7 composed of the partition plates 3c and 3d are flexibly connected to each other.
[0021]
An infrared detection sensor 51 is provided on the front plate 50 of the device box 5, and the voice guidance electronically synthesized according to a change in the detection signal of the detection sensor 51 is reproduced in the device box 5. The audio guidance is broadcasted through a speaker 52 attached to the front plate 50. In addition, a strobe light 53 is provided at the lower end of the front plate 50 of the equipment box 5, and is configured to repeat blinking for a predetermined time according to a change in the detection signal of the detection sensor 51. The detection sensor 51, the electronic circuit, the strobe light 53, and the LED array 33 are supplied with power from a battery built in the device box 5.
[0022]
The angle of view of the detection sensor 51 is about 120 ° and the detection distance is about 5 m. When a pedestrian enters the field of view of the detection sensor 51, the detection signal of the detection sensor 51 changes. Then, the voice guidance notifying that the strobe light cannot be used is issued from the speaker 52, and the strobe light 53 flashes continuously for only a few seconds to call attention to the pedestrian approaching the safety fence 1. Has become.
[0023]
The width of the device box 5 in the connecting direction of the partition plates 3b and 3c is substantially equal to the width of two partition plates, and the partition plates 3a and 3d are overlapped with the adjacent partition plates 3b and 3c, respectively. When the partition plates 3b and 3c are folded so as to overlap with each other with the device box 5 as a center, as shown in FIG. 3, the partition plates 3b and 3c sandwich the partition plates 3a and 3d so that four partitions are provided. The boards can be stacked. Thus, when the partition plates 3a, 3b, 3c, and 3d are folded, the safety fence 1 can be made very compact, and can be easily transported and stored.
[0024]
As described above, since the field of view of the detection sensor 51 is limited to a certain range, the detection sensor 51 detects an approaching pedestrian and reliably broadcasts voice guidance to call attention to the pedestrian. It is necessary to orient the front plate 50 of the equipment box 5 in a direction in which it is estimated that the pedestrian will come closest. However, the situation of the pedestrian passage is different for each work area using the safety fence, and the arrangement of the safety fence itself differs depending on the size and shape of the work area to be partitioned from the pedestrian passage . For this reason, when the detection sensor is fixed to the partition plate of the safety fence, the detection sensor cannot be appropriately opposed to the approach direction of the pedestrian, and the pedestrian approaches the safety fence. However, there is a concern that voice guidance may not be played.
[0025]
In this regard, in the safety fence 1 of the present embodiment, the equipment box 5 is provided between a pair of partition plates 3b, 3c adjacent to each other, and these partition plates 3b, 3c and the equipment box 5 are connected by hinges, respectively. Since the pedestrian detection sensor 51 is provided on the front plate 50 of the device box 5, the two partition plates 3b and 3c are the same as shown in FIGS. 4 (a) and 4 (b). Even when the opening is widened at an angle, the front plate 50 of the device box 5 can be directed in any direction by the action of the hinge 4 connecting the partition plates 3b, 3c and the device box 5. Things. Thus, in the safety fence 1 of the present embodiment, the detection sensor 51 can be directed in any direction in which a pedestrian is expected to approach, regardless of the arrangement of the partition plates 3a, 3b, 3c, and 3d. This makes it possible to reliably detect a pedestrian approaching the safety fence 1 and broadcast a voice guidance to surely draw the pedestrian's attention.
[0026]
On the other hand, FIG. 5 is an exploded perspective view showing the hinges 4 for connecting the partition plates 3a, 3d and the partition plates 3b, 3c or the partition plates 3b, 3c and the equipment box 5 in a freely bendable manner. The hinge 4 includes a support pin 40, a fixed sleeve 41 having a through hole 41 a into which the support pin is loosely fitted, and one end of the through hole 41 a of the fixed sleeve 41. An intermediate sleeve 42 through which the inner sleeve 40 penetrates, a lock pin 43 that enters into an elongated hole 42 a opened to penetrate the peripheral wall of the intermediate sleeve 42, and the lock pin 43 is sealed in the elongated hole 42 a of the intermediate sleeve 42. A movable sleeve 44 to be put on the intermediate sleeve 42, a lock release lever 45 swingably connected to the tip of a pivot pin 40 penetrating the intermediate sleeve 42, and a through hole 41 a of the fixed sleeve 41. And a spring 46 for urging the spindle pin 40 in a direction in which its head 40a is separated from the fixed sleeve 41. To have.
[0027]
The fixed-side sleeve 41 and the movable-side sleeve 44 are configured to be rotatable around a pivot pin 40. For example, the fixed-side sleeve 41 is placed in the equipment box 5, the movable-side sleeve 44 is placed in the partition plates 3b, 3c. , The partition plates 3b and 3c can be swingably connected to the device box. By operating the lock release lever 45, the hinge 4 can prohibit rotation of the movable sleeve with respect to the fixed sleeve in one direction and allow rotation of the movable sleeve in the other direction. Hereinafter, this lock mechanism will be described.
[0028]
A curved notch 40b is formed in a part of the peripheral surface of the support pin 40, and when the support pin 40 is fitted to the fixed side sleeve 41 and the intermediate sleeve 42, the notch is formed. The portion 40b is configured to be located immediately below the elongated hole 42a opened in the intermediate sleeve 42. For this reason, after the lock pin 43 is inserted into the elongated hole 42a and then the movable sleeve 44 is put on the outside of the intermediate sleeve 42, as shown in FIG. The lock pin 43 exists between the curved notch portions 40b, and the movement of the lock pin 43 around the support shaft pin 40 is restricted by the elongated hole 42a of the intermediate sleeve 42.
[0029]
On the other hand, the end of the intermediate sleeve 42 is fitted into the through hole 41 a of the fixed side sleeve 41 from the side opposite to the support pin 40, and is integrated with the fixed side sleeve 41 by a hexagon screw 47. . For this reason, the spring 46 is sandwiched between the head 40 a of the support pin 40 and the end surface of the intermediate sleeve 42 in the through hole 41 a of the fixed sleeve 41, and connects the support pin 40 to the through hole of the fixed sleeve 41. It is urged in the direction of pushing out from 41a. The lock release lever 45 is connected to the tip of the support pin 40 via an engagement pin 48, and the fixed side sleeve 41, the intermediate sleeve 42, and the movable side sleeve 44 are supported against the urging force of the spring. This prevents the shaft pin 40 from slipping out. Therefore, as shown in FIG. 7, the lock release lever 45 is always in contact with the end surface of the movable sleeve 44.
[0030]
A positioning step 41b is formed on the end surface of the fixed side sleeve 41 which is in contact with the head 40a of the spindle pin 40, while a reference step engaging with the positioning step 41b is formed on the head 40a of the spindle pin 40. A portion 40c is formed, and as shown in FIG. 7 (a), when the lock release lever 45 is vertically erected from the end surface of the movable sleeve 44 (arrow {circle around (1)}), the lock release lever 45 is formed. Acts as a cam, the support pin 40 is retracted into the fixed side sleeve 41 and the movable side sleeve 44, and the positioning step 41b of the fixed side sleeve 41 and the reference step 40c of the support pin 40 engage with each other. It has become. Therefore, when the lock release lever 45 is raised, the support pin 40 cannot be rotated with respect to the fixed side sleeve 41 and the intermediate sleeve 42, and the rotation position of the support pin 40 is fixed. Hereinafter, this state is referred to as an unlocked state. On the other hand, as shown in FIG. 7B, when the lock release lever 45 is tilted toward the end surface of the movable side sleeve 44 (arrow (2)), the support pin 40 applies the urging force of the spring 46. As a result, the positioning step 41b of the fixed side sleeve 41 and the reference step 40c of the support pin 40 are separated from each other, and the support pin 40 is moved to the fixed side sleeve 41 and the intermediate sleeve 42. On the other hand, it can be rotated. Hereinafter, this state is referred to as a lock operation state.
[0031]
FIG. 6 is an explanatory view showing the operation of the lock mechanism in the hinge 4. FIGS. 6A and 6C show the positional relationship between the notch 40b of the support pin 40 and the lock pin 43 in the unlocked state. (B) and (d) show the positional relationship between the notch 40b of the support pin 40 and the lock pin 43 in the lock operation state. When the lock release lever 45 is raised to set the lock release state, the support pin 40 is fixed to the fixed side sleeve 41 and the intermediate sleeve 42 as described above, and in this state, the notch 40b of the support pin 40 is It faces the long hole 42 a opened in the intermediate sleeve 42. The diameter d of the lock pin 43 is slightly smaller than the distance L between the notch portion 40b and the inner peripheral surface of the movable side sleeve 44 opposed via the long hole 42a, and the lock shown in FIGS. In the released state, there is a gap between the lock pin 43 and the inner peripheral surface of the movable sleeve 44 or between the lock pin 43 and the notch 40b of the support pin 40. For this reason, even when the movable side sleeve 44 is rotated with respect to the intermediate sleeve 42, the lock pin 43 slides on the inner peripheral surface of the movable side sleeve 44, so that the movable side sleeve 44 is free with respect to the intermediate sleeve 42. The movable sleeve 44 can be freely rotated with respect to the fixed sleeve 41.
[0032]
On the other hand, from the unlocked state shown in the drawings (a) and (c), the pivot pin 40 is rotated in either direction with respect to the fixed side sleeve 41 as shown in the drawings (b) or (d). When the lock operation state is set, the notch portion 40b of the support pin 40 faces a different direction without facing the long hole 42a, and the lock pin 43 is positioned near the end of the notch portion 40b. It comes in contact with. Since the notch portion 40b is formed by cutting out a part of the peripheral surface of the support pin 40, the lock pin 43 moves closer to the end of the notch portion 40b and the outer peripheral surface of the support pin 40. The result is to be pushed up to near. Here, since the diameter d of the lock pin 43 is formed larger than the thickness of the peripheral wall of the intermediate sleeve 42, the support pin 40 is rotated with respect to the intermediate sleeve 42 as described above, and the lock pin 43 is moved to the intermediate sleeve 42. When the lock pin 43 is pushed up toward the movable side sleeve 44 in the long hole 42a, the lock pin 43 comes into close contact with both the inner peripheral surface of the movable side sleeve 44 and the notch 40b of the support pin 40. It will be in the state of having done. In other words, a wedge-shaped space is formed between the inner peripheral surface of the movable-side sleeve 44 and the notch 40b of the support pin 40, and the lock pin 43 is notched with the movable-side sleeve 44 in the wedge-shaped space. It will be in contact with the part 40b. That is, this is the state shown in the diagram (b) or (d).
[0033]
When the movable sleeve 44 is rotated in the direction of the arrow (3) with respect to the intermediate sleeve 42 from this state, the lock pin 43 which is in close contact with the inner peripheral surface of the movable sleeve 44 is moved to the movable sleeve 44. Is rotated in the long hole 42a of the intermediate sleeve 42 in the direction of the arrow (3), so that the lock pin 43 is formed by the inner peripheral surface of the movable sleeve 44 and the notch 40b of the support pin 40. Then, a gap is formed between the movable sleeve 44 and the wedge-shaped space formed between the movable sleeve 44. Thereby, the movable side sleeve 44 can freely rotate with respect to the intermediate sleeve 42 and eventually the fixed side sleeve 41 in the direction of arrow (3).
[0034]
On the other hand, when the movable side sleeve 44 is rotated in the direction of the arrow (4) with respect to the intermediate sleeve 42, the lock pin 43 is rotated along with the movable side sleeve and moves through the long hole 42a of the intermediate sleeve 42 with the arrow (4). At this time, the lock pin 43 is engaged in the wedge-shaped space formed between the inner peripheral surface of the movable sleeve 44 and the notch 40b of the support pin 40. It cannot roll, and the rotation of the movable sleeve 44 is also locked. For this reason, the movable side sleeve 44 cannot rotate with respect to the intermediate sleeve 42 and eventually the fixed side sleeve 41 in the direction of arrow (4).
[0035]
Therefore, when the lock release lever 45 is tilted to enter the lock operation state (see FIG. 7B), and then the tilted lock release lever 45 is turned in one direction, the movable sleeve 44 with respect to the fixed sleeve 41 is moved. Rotation can be prohibited in one direction and allowed in the other direction. For this reason, by appropriately setting the rotation direction of the pivot pin 50 in the lock operation state, for example, as shown in FIG. 8, the partition plate 3d does not open to the work area side, and conversely opens to the pedestrian passage side. It is possible to set as follows. In other words, while preventing the pedestrian from entering the work area, the worker can leave the work area, thereby improving the safety of the pedestrian and the convenience of the worker.
[0036]
【The invention's effect】
As described above, according to the regulating movable safety fence of the present invention, an equipment box is provided between a pair of partition walls adjacent to each other, and a pedestrian detection sensor and a voice guidance reproducing unit are provided in the equipment box. Since it is built-in, it is easy to install and withdraw a safety fence with voice guidance function, and since such equipment box is connected to each partition wall via hinges, pedestrians can The detection sensor can always face the direction that is considered to be approaching frequently, and it is possible to reliably detect the approaching pedestrian and call attention to the sound.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a safety fence to which the present invention is applied.
FIG. 2 is a front view of the safety fence according to the embodiment.
FIG. 3 is a plan view showing a state where the safety fence according to the embodiment is folded.
FIG. 4 is a plan view showing a state in which the facing direction of the front plate of the equipment box is changed without changing the spread angle of the partition plate.
FIG. 5 is an exploded perspective view showing the structure of the hinge of the safety fence according to the embodiment.
FIG. 6 is a sectional view showing an unlocked state and a locked operation state of a hinge used in the embodiment.
FIG. 7 is a side view showing a positional relationship between a setting position of a lock release lever and a spindle pin.
FIG. 8 is a plan view showing a usage example of the hinge lock mechanism according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Safety fence, 2 ... Leg part, 3a, 3b, 3c, 3d ... Partition plate, 4 ... Hinge, 5 ... Equipment box, 51 ... Detection sensor, 53 ... Strobe light

Claims (4)

A pair of partition walls that prevent a pedestrian from entering the work area, and a pair of partition walls that are provided between a pair of partition walls adjacent to each other, are connected to the sides of each of the adjacent partition walls via hinges. A device box for flexibly connecting the pair of partition walls; and the device box further includes a detection sensor for detecting the approach of the pedestrian to the partition wall, and a sound corresponding to a detection result of the detection sensor. A movable safety fence for regulation characterized by incorporating means for reproducing guidance and a battery for driving the reproducing means. The movable safety fence for regulation according to claim 1, wherein a strobe light that repeats light emission for a predetermined time according to a detection result of the detection sensor is built in the device box. Each partition wall is composed of two partition plates of the same size, which are foldably connected via hinges, while the width of the equipment box connecting the partition walls is substantially equal to the thickness of the two partition plates. The movable safety fence for regulation according to claim 1 or 2, which is equivalent. The restriction according to any one of claims 1 to 3, wherein the hinge includes a lock mechanism, and when the lock mechanism is operated, only rotation of the partition wall in any one direction is prohibited. Movable safety fence.

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