Platform fence device

Abstract

To provide a platform fence device hardly causing a problem even if the tip of a door contacts a passenger while making the door hardly affected by external force.SOLUTION: A platform fence device 100 according to a first embodiment includes: a first door body 20A advancing and retracting laterally from an end 32 of a first platform fence body 30A; a second door body 20B advancing and retracting laterally from an end 33 of an adjacent second platform fence body 30B on the side of the first platform fence body 30A; a protrusion 85a which changes from a state contained in the first end 81 of the first door body 20A to a state protruding when the first end 81 of the first door body 20A and the second end 82 of the second door body 20B are closed in contact with each other; and a connecting part 84 having a receiving hole 85b formed in the second end 82 of the second door body 20B into which the protrusion 85a can be inserted.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a platform fence device having a pair of gate bodies that open and close by advancing and retreating synchronously from the ends of a pair of platform fence main bodies. [Background technology]

[0002] A known platform fence device, for example, has a pair of opposing doors with a recessed and protruding shape at the tips thereof that fits together, so that the doors will not open even if a perpendicular pressure is applied to the doors when they are closed (Patent Document 1). For example, the recessed and protruding shape has an arrowhead-shaped hook at the tip of the convex shape, and a pair of opposing hooks are formed on the inner edge of the tip of the concave shape (paragraphs

[0017] to

[0019] , figures 1 to 6, etc.).

[0003] In the platform fence device described in Patent Document 1, a hook-like protrusion is formed on the tip of the door, so measures are needed to prevent problems from occurring even if the tip of the door comes into contact with a passenger. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-151723 A Summary of the Invention

[0005] The present invention aims to provide a platform fence device which makes the door less susceptible to the effects of external forces and which is less likely to cause problems even if the tip of the door comes into contact with a passenger.

[0006] In order to achieve the above-mentioned object, the platform fence device of the present invention comprises a first door body which advances and retreats laterally from an end of a first platform fence main body, a second door body which advances and retreats laterally from an end of an adjacent second platform fence main body on the side of the first platform fence main body, a protrusion which changes from a stored state in the first end of the first door body to a protruding state when the first end of the first door body and the second end of the second door body are abutted and closed, and a connecting portion having a receiving hole formed in the second end of the second door body into which the protrusion can be inserted.

[0007] According to the above-mentioned platform fence device, when the first end of the first door body and the second end of the second door body are brought into contact with each other during closing, the protrusion changes from a stored state in the first end of the first door body to a protruding state and is inserted into a receiving hole formed in the second end of the second door body, so that when the door is opened, the protrusion is stored and can be prevented from coming into contact with people or objects passing by. Furthermore, when the door is closed, the protruding protrusion is inserted into the receiving hole and the first end and second end are connected, making the closed door body less susceptible to the effects of external forces and reducing the burden on the platform fence main body when supporting the door body. [Brief description of the drawings]

[0008] [Figure 1] 1 is an overall conceptual diagram illustrating a platform fence device according to a first embodiment. FIG. [Diagram 2] 1A is a front view illustrating the open state of the platform fence device, and FIG. 1B is a front view illustrating the closed state of the platform fence device. [Diagram 3] (A) is a partially cutaway oblique view illustrating the open state of the connecting portion provided at the first end of the first door body and the second end of the second door body, (B) is an oblique view illustrating the appearance of the second end of the second door body, and (C) is a partially cutaway oblique view illustrating the closed state of the connecting portion provided at the first end of the first door body. [Figure 4] 13 is a conceptual diagram showing a state in which a protrusion is held in a receiving hole. FIG. [Diagram 5] 5 is a conceptual diagram illustrating a modified example of the receiving hole shown in FIG. 4. [Figure 6] 6 is a conceptual diagram illustrating a modified example of the receiving hole shown in FIG. 5. FIG. [Figure 7] FIG. 11 is a plan view illustrating a platform fence device according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [First embodiment] Hereinafter, the platform fence device of the first embodiment will be described with reference to the drawings.

[0010] Fig. 1 is a conceptual diagram illustrating the platform fence device 100. Fig. 1 is a diagram of the platform fence device 100 as viewed from the platform PF side, and shows the state in which an exterior panel on the platform PF side of the platform fence device 100 has been removed.

[0011] The platform fence device 100 separates the platform PF and the track RL of a station. The platform fence device 100 is also called a movable platform fence. The platform fence device 100 is composed of a predetermined number of platform door elements 10 arranged in a row to cover a predetermined area of ​​the platform PF. Each platform door element 10 has a door body 20 and a platform fence main body 30. In the example of FIG. 1, in each platform door element 10, a pair of door bodies 20 protrude from the end opening of the platform fence main body 30 and close the boarding and alighting passage, thereby forming a series of platform fences that extend along the edge of the platform PF as a whole.

[0012] The door body 20 is a door member that is housed within the platform fence main body 30 and is provided so as to be freely inserted and removed. The door body 20 has a main door body 21 that moves laterally from a first end 32 that is one end of the platform fence main body 30, and a secondary door body 22 that moves laterally from a second end 33 that is the other end of the platform fence main body 30. Normally, the operations of the main door body 21 and the secondary door body 22 are controlled so that they open and close in conjunction with each other.

[0013] The platform fence main body 30 is fixed to the floor of the platform PF and has a door pocket structure that holds the door body 20 so that it can move forward and backward. The platform fence main body 30 has an electric circuit system 40, a guide mechanism 50, and a transmission mechanism 60 in a housing 31.

[0014] For ease of explanation, in this specification, the platform door element 10 on the right side in the figure is referred to as the first platform door element 10A, and the platform door element 10 on the left side in the figure is referred to as the second platform door element 10B. The first platform door element 10A has a first platform fence main body 30A and a first door body 20A that moves from the end of the first platform fence main body 30A (first end 32 on the left side in the figure) to the side where the second platform door element 10B is located. The second platform door element 10B has a second platform fence main body 30B and a second door body 20B that moves from the end of the second platform fence main body 30B (second end 33 on the right side in the figure) to the side where the first platform door element 10A is located. When considering opening and closing, the first door body 20A and the second door body 20B work together to function like sliding doors that open and close synchronously. The first platform fence body 30A and the second platform fence body 30B are both platform fence bodies 30 and are arranged adjacent to each other. The first door body 20A corresponds to the main door body 21 of the first platform fence body 30A, and the second door body 20B corresponds to the secondary door body 22 of the second platform fence body 30B.

[0015] The relationship between the first platform door element 10A and the second platform door element 10B as described above applies between any pair of adjacent platform door elements 10.

[0016] In each platform fence body 30, the electric circuit system 40 is a component used to control and drive the platform door elements 10, and enables the electrically operated opening and closing operation of the door body 20. The electric circuit system 40 has a control device 41, a driving force generating device 44, an indicator lamp 48, etc.

[0017] Of the electric circuit system 40, the control device 41, the driving force generating device 44, etc. are arranged on a board (not shown) and fixed to the housing 31. The electric circuit system 40 provided in the series of platform door elements 10 is connected to a general control device 70 provided separately on the platform PF or in its vicinity via a communication line CC. The control device 41 includes a computer, receives opening / closing signals and the like from the general control device 70, and controls the operation of the platform door elements 10. The driving force generating device 44 generates a driving force to move the door body 20. The driving force generating device 44 has a first motor 44a that drives the main door body 21 and a second motor 44b that drives the secondary door body 22. The indicator light 48 indicates the open / closed state of the door body 20. For example, the indicator light 48 is turned on when the door body 20 is open and turned off when the door body 20 is closed.

[0018] The guide mechanism 50 is composed of mechanical parts including rollers, adjustment jigs, etc. (not shown) in addition to the guide rail 51. The guide rail 51 is disposed so as to sandwich the top and bottom of the door body 20. The guide mechanism 50 enables the door body 20 to move laterally smoothly, that is, to open and close the door body 20.

[0019] The transmission mechanism 60 is composed of mechanical parts including a belt 61, a pulley 62, and a connector (not shown). The transmission mechanism 60 transmits the driving force of the motor 44 to the door body 20. Specifically, the transmission mechanism 60 and the motor 44 are provided corresponding to the main door body 21 and the secondary door body 22, respectively. As a result, the driving force of the first motor 44a is transmitted to the main door body 21, and the driving force of the second motor 44b is transmitted to the secondary door body 22.

[0020] The connecting parts 84, 184 provided between the first door body 20A and the second door body 20B will be described with reference to Figures 2(A) and 2(B). Figure 2(A) is a front view illustrating the open state of the platform fence device 100, and Figure 2(B) is a front view illustrating the closed state of the platform fence device 100.

[0021] The first door body 20A is sent out in the direction A from the first end 32 of the first platform fence main body 30A, thereby changing from an open state to a closed state, and in sync with this, the second door body 20B is sent out in the direction B from the second end 33 of the second platform fence main body 30B, thereby changing from an open state to a closed state. A first connecting portion 84 and a second connecting portion 184 are provided between the first end 81 of the first door body 20A and the second end 82 of the second door body 20B. One of the first connecting portions 84 is formed in the upper portions of the first door body 20A and the second door body 20B, and the other second connecting portion 184 is formed in the lower portions of the first door body 20A and the second door body 20B.

[0022] The first connecting portion 84 includes a protrusion 85a that changes from a state stored in the first end 81 of the first door body 20A to a state protruding when the first end 81 of the first door body 20A and the second end 82 of the second door body 20B are abutted against each other to close the door, a receiving hole 85b that is formed in the second end 82 of the second door body 20B and into which the protrusion 85a can be inserted, and an advance / retract mechanism 85d that displaces the protrusion 85a relative to the first end 81. The first connecting portion 84 is a part of the first end 81 and also a part of the second end 82. The second connecting portion 184 has a structure similar to that of the first connecting portion 84, and includes the protrusion 85a, the receiving hole 85b, and the advance / retract mechanism 85d. By providing the first connecting portion 84 and the second connecting portion 184, the first door body 20A and the second door body 20B are supported at both ends, and the load on the guide mechanism 50 and the like is reduced. Furthermore, by providing the connecting parts 84, 184, even if an external force acts on the first door body 20A or the second door body 20B, deflection at the positions of the first end 81 and the second end 82 is reduced, improving safety against contact accidents with trains.

[0023] Although details will be described later, the protrusion 85a is driven to a protruding state by the action of closing the first door body 20A and the second door body 20B. By using the connecting parts 84, 184 having such a protrusion 85a, the closing action of the pair of door bodies 20A, 20B can be used as a driving force to connect the pair of door bodies 20A, 20B at the first end 81 and the second end 82. In this case, the first connecting part 84 is formed between the first door body 20A and the second door body 20B so as to span the upper parts thereof, and the second connecting part 184 is formed between the first door body 20A and the second door body 20B so as to span the lower parts thereof, thereby achieving connection at two points and enabling a well-balanced connection at the top and bottom with a simple structure.

[0024] In the open state shown in FIG. 2(A), the protrusion 85a is stored in the first end 81 by the advance / retract mechanism 85d. In the closed state shown in FIG. 2(B), the protrusion 85a is changed to a state in which it protrudes to the first end 81 by the advance / retract mechanism 85d, and is inserted into the receiving hole 85b formed in the opposing second end 82. As a result, the first end 81 and the second end 82 are connected, and even if pressure acts on the first door body 20A and the second door body 20B in a direction perpendicular to the paper surface of FIG. 2(B), the first end 81 and the second end 82 are unlikely to move in a direction perpendicular to the paper surface. In other words, the closed first door body 20A and the second door body 20B are unlikely to be affected by external forces, and the deflection deformation of the first door body 20A and the second door body 20B is reduced. In other words, it is easy to achieve simplification and weight reduction of the guide mechanism 50, etc. In the open state shown in FIG. 2(A), the protrusion 85a is stored in the first end 81, so that people or objects passing through the boarding and alighting passageway do not come into contact with the protrusion 85a.

[0025] A specific structure of the first connecting part 84 provided between the first door body 20A and the second door body 20B will be described with reference to Figures 3(A) and 3(B). Figure 3(A) is a partially cutaway perspective view illustrating the first connecting part 84 provided between the first end 81 of the first door body 20A and the second end 82 of the second door body 20B in an unclosed state, and Figure 3(B) is a perspective view illustrating the appearance of the second end 82 of the second door body 20B.

[0026] The first end 81 of the first door body 20A has, as the advancement / retraction mechanism 85d of the first connecting portion 84, a support member 86a that supports the base of the protrusion 85a, a movable cover 86b that has an opening 86p through which the protrusion 85a passes and is pressed against the second end 82 of the second door body 20B to move backward, and a biasing member 86c that biases the movable cover 86b toward the second end 82. The first end 81 has a fixed cover 87a that is fixed relatively to the protrusion 85a and stores the moved-back movable cover 86b. A sheet-like elastic member 87m made of resin is attached to the end surface on the +X side of the movable cover 86b to reduce the impact when the first end 81 and the second end 82 are butted against each other. The movable cover 86b advances in the absence of external force and stores the entire protrusion 85a in the back of the opening 86p. On the other hand, when the movable cover 86b is pressed by the second end 82, it retreats, causing the protrusion 85a to entirely protrude from the opening 86p. The fixed cover 87a causes the movable cover 86b, which advances in the absence of an external force, to protrude from the fixed cover 87a, and stores the movable cover 86b, which retreats when pressed by the second end 82, within the fixed cover 87a.

[0027] The support member 86a is an angle member having a U-shaped cross section that supports the protrusion 85a and extends in the vertical Z direction, and is fixed directly or indirectly to the frame member 87f that forms the exterior of the first door body 20A. In other words, the protrusion 85a does not displace relative to the frame member 87f. The movable cover 86b is an angle member having a U-shaped cross section that extends in the vertical Z direction, and is stored inside the fixed cover 87a and is movable in the horizontal ±X direction while being guided by the protrusion 85a. The fixed cover 87a forms an exterior integrated with the frame member 87f, and can store the retreated movable cover 86b so as to sandwich it from the front and rear ±Y directions. The biasing member 86c is, for example, a helical spring-shaped member, and is held around the protrusion 85a and sandwiched between the support member 86a and the movable cover 86b. The biasing member 86c keeps the movable cover 86b in an advanced state protruding relative to the fixed cover 87a, but allows the movable cover 86b to go into a retreated state housed within the fixed cover 87a when an external force is applied.

[0028] At the second end 82 of the second door body 20B, the receiving hole 85b has an insertion hole 87q and a guide member 87r. The insertion hole 87q is provided in a front plate 87x constituting a frame member 87g forming the external appearance of the second door body 20B, and is disposed at a position facing the protrusion 85a provided on the first door body 20A. The guide member 87r is fixed to the inner surface of the front plate 87x and sandwiches the protrusion 85a that has entered the insertion hole 87q from the front and rear ±Y directions. This allows the protrusion 85a to be stably held in the receiving hole 85b. The space in which the receiving hole 85b is provided is blocked from the inside of the frame member 87g by the rear plate 87h. A sheet-shaped elastic member 87n made of resin is attached to the end surface on the -X side of the front plate 87x, and is in close contact with the elastic member 87m of the first door body 20A in the closed state.

[0029] As shown in FIG. 3(A), when no load is applied to the movable cover 86b, that is, when the door bodies 20A and 20B are in an open state, the movable cover 86b moves in the +X direction due to the biasing member 86c, but further movement is prevented when the flange 86i of the movable cover 86b abuts against the claw 86j of the fixed cover 87a. When the movable cover 86b advances in the +X direction, the edge of the first end 81 appears to be composed of the tip of the protrusion 85a, the movable cover 86b, and the elastic member 87m. As shown in FIG. 3(C), by using the second end 82 of the second door body 20B to push the movable cover 86b in the -X direction, the movable cover 86b moves in the -X direction against the biasing member 86c, but further movement is prevented when the flange 86i of the movable cover 86b abuts against the limiting member 86k provided on the frame member 87f. By moving the movable cover 86b in the -X direction, the protrusion 85a can be made to appear to protrude in the +X direction from the opening 86p of the movable cover 86b. When the movable cover 86b is retracted in the -X direction, the edge of the first end 81 appears to be made up of the protrusion 85a, the tip 86be of the movable cover 86b, the elastic member 87m, and the fixed cover 87a.

[0030] The above is a description of the structure and function of the first connecting part 84, but the second connecting part 184 shown in FIG. 2 and the like has the same structure and function as the first connecting part 84. The movable cover 86b and the fixed cover 87a of the first connecting part 84, which extend in the vertical Y direction, are common members to the first connecting part 84.

[0031] 4 is a conceptual partially enlarged cross-sectional view showing a state in which the protrusion 85a is held in the receiving hole 85b. A pair of guide members 87r has a slope 87s formed on the entrance side. The flat side surface 85s of the protrusion 85a is sandwiched between the abutment surfaces 87t of the pair of guide members 87r that constitute the receiving hole 85b, suppressing wobbling and tilting of the protrusion 85a in the receiving hole 85b.

[0032] FIG. 5 is a conceptual diagram for explaining a modified example of the receiving hole 85b shown in FIG. 4. In this case, an elastic member 88a is arranged on the back side of the pair of guide members 87r, and applies a force to narrow the gap between the pair of guide members 87r. Although not shown, the guide members 87r can be provided with a member for restricting the movement of the guide members 87r. The elastic member 88a ensures the engagement between the protrusions 85a and the receiving holes 85b, and strengthens the grip of the protrusions 85a by the pair of guide members 87r. This makes it possible to further suppress the change in the posture of the protrusions 85a in the receiving holes 85b. By adjusting the biasing force of the elastic member 88a, it is possible to allow relative displacement while ensuring the engagement between the protrusions 85a and the receiving holes 85b.

[0033] Fig. 6 is a conceptual diagram illustrating a modified example of the receiving hole 85b shown in Fig. 5. In this case, a recess 88c is formed in a part of the abutment surface 87t of the pair of guide members 87r, and a protrusion 88d is formed in a part of the flat side surface 85s of the protrusion 85a, and the recess 88c and the protrusion 88d are fitted together in the closed state shown in the figure. In this case, the protrusion 85a fits into the receiving hole 85b to restrict the axial movement of the protrusion 85a, making it more difficult for the protrusion 85a to come out of the receiving hole 85b.

[0034] The first connecting portion 84 and the second connecting portion 184 are not limited to the structures shown in Fig. 3 and the like, and can be replaced with various connecting means having equivalent functions. In particular, the advancing / retreating mechanism 85d that enables the protrusion 85a to passively advance and retreat can be replaced with various mechanical mechanisms having equivalent functions. Furthermore, the advancing / retreating mechanism 85d may incorporate an electric actuator in the first door body 20A, and remotely advance and retreat the actuator in response to a control signal from the control device 41.

[0035] The platform fence device 100 of the first embodiment described above comprises a first door body 20A which advances and retreats laterally from an end 32 of the first platform fence main body 30A, a second door body 20B which advances and retreats laterally from an end 33 on the first platform fence main body 30A side of the adjacent second platform fence main body 30B, and a connecting portion 84 having a protrusion 85a which changes from a stored state in the first end 81 of the first door body 20A to a protruding state when the first end 81 of the first door body 20A and the second end 82 of the second door body 20B are abutted against each other when the door is closed, and a receiving hole 85b formed in the second end 82 of the second door body 20B into which the protrusion 85a can be inserted.

[0036] According to the platform fence device 100 of the first embodiment, when the first end 81 of the first door body 20A and the second end 82 of the second door body 20B are brought into contact with each other, the protrusion 85a changes from a state in which it is stored in the first end 81 of the first door body 20A to a state in which it protrudes, and is inserted into the receiving hole 85b formed in the second end 82 of the second door body 20B, so that when the door is opened, the protrusion 85a is stored and can be prevented from coming into contact with people or objects passing by. Furthermore, when the door is closed, the protrusion 85a in the protruding state is inserted into the receiving hole 85b to connect the first end 81 and the second end 82, making the closed door bodies 20A and 20B less susceptible to external forces, and reducing the burden when the door bodies 20A and 20B are supported by the platform fence main bodies 30A and 30B.

[0037] Second Embodiment Hereinafter, a second embodiment, which is a modification of the first embodiment, will be described with reference to FIG.

[0038] As shown in FIG. 7, in the platform fence device 100, the first platform fence main body 30A of the first platform door element 10A and the second platform fence main body 30B of the second platform door element 110B are installed at different angles. Correspondingly, the main body 20p of the first door body 20A and the main body 20p of the second door body 20B are arranged at a predetermined inclination angle. When the first end 81 of the first door body 20A and the second end 82 of the second door body 20B are connected by the connecting part 84, it is desirable to match the angles at the connecting part 84. For this reason, a bending part 91 that makes the first end 81 and the second end 82 parallel to each other is provided in the tip area EA2 of the second door body 20B, which is one of the first door body 20A and the second door body 20B. The bending part 91 offsets the inclination angle between the main body 20p of the first door body 20A and the main body 20p of the second door body 20B. By providing such a bent portion 91, the first end 81 of the first door body 20A and the second end 82 of the second door body 20B can be brought into contact with each other so as to face each other and be fitted together. In other words, even if the first door body 20A and the second door body 20B are originally installed in a tilted state, the first end 81 or the tip area EA1 of the first door body 20A and the second end 82 or the tip area EA2 of the second door body 20B face each other. This makes it easy to fit the protrusion 85a into the receiving hole 85b in the first connecting portion 84 when the platform fence device 100 is in the closed state, and the connection between the first end 81 and the second end 82 by the first connecting portion 84 can be ensured, and the connection between the first end 81 and the second end 82 can be stabilized.

[0039] The bent portion 91 connects the main body 20p and the second end 82, and the angle of the second end 82 with respect to the main body 20p can be adjusted by a connecting member 91a for forming an inclination, such as a taper shim. The connecting member 91a for forming an inclination may be a combination of a hinge and a spring.

[0040] When the first platform fence main body 30A and the second platform door element 110B are caused to close, the second door body 20B of the second platform door element 110B is first operated in advance, so that the second end 82 is positioned in the closed state first. After that, the first door body 20A of the first platform fence main body 30A is operated with a delay, so that the first end 81 approaches the second end 82 and is pressed against the second end 82. This allows the protrusion 85a to be securely fitted into the receiving hole 85b.

[0041] 〔others〕 The present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit and scope of the present invention.

[0042] In the above, the shape of the insertion opening 87q of the receiving hole 85b and the protrusion 85a are not limited to those shown in the drawings, and may be of various shapes. In the receiving hole 85b, the guide member 87r is not essential and may be omitted.

[0043] It is not necessary to provide both the first connecting portion 84 and the second connecting portion 184. On the other hand, three or more connecting portions similar to the first connecting portion 84 may be provided. [Explanation of symbols]

[0044] 10...platform door element, 10A...first platform door element, 10B, 110B...second platform door element, 20A...first door body, 20B...second door body, 20p...main body, 30...platform fence main body, 30A...first platform fence main body, 30B...second platform fence main body, 31...housing, 32...first end, 33...second end, 40...electrical circuit system, 41...control device, 44...driving force generating device, 50...guide mechanism, 60...transmission mechanism, 70...overall control device, 84...first connecting portion, 184...second connecting portion, 85a...projection portion, 85b...receiving hole, 85d...driving mechanism, 86a...support member, 86b...movable cover, 86c...urging member, 86i...flange, 86j...claw, 86k...Limiting member, 86p...Opening, 87a...Fixed cover, 87f, 87g...Frame member, 87m, 87n...Elastic member, 87q...Insertion hole, 87r...Guide member, 87t...Abutment surface, 88a...Elastic member, 91...Bending portion, 91a...Connecting member, 100...Platform fence device, EA1, EA2...Tip region, PF...Platform, RL...Railway

Claims

1. A first door body that moves laterally from an end portion of the first platform fence body; A second door body that moves laterally from an end portion of the adjacent second platform fence body on the side of the first platform fence body; a connecting portion having a protrusion portion that changes from a state where it is stored in the first end of the first door body to a state where it protrudes when the first end of the first door body and the second end of the second door body are brought into contact with each other in the closing state, and a receiving hole that is formed in the second end of the second door body and into which the protrusion portion can be inserted; A platform fence device comprising:

2. The platform fence device according to claim 1 , wherein the protrusion is driven to a protruding state by an operation of closing the first door body and the second door body.

3. The platform fence device described in claim 2, wherein the first end of the first door body has a support member that supports a base of the protrusion, a movable cover that has an opening through which the protrusion passes and that retreats when pressed against the second end, and a biasing member that biases the movable cover toward the second end.

4. The platform fence device according to claim 3 , wherein the first end of the first door body is fixed relatively to the protrusion and has a fixed cover that stores the retracted movable cover.

5. The connecting portion includes two of the connecting portions, One of the connecting portions is formed at an upper portion of the first door body and the second door body, The platform fence device according to claim 1 , wherein the other connecting portion is formed at a lower portion of the first door body and the second door body.

6. The platform fence device according to claim 1 , further comprising a bent portion provided in a tip region of one of the first door body and the second door body, the bent portion making the first end and the second end parallel to each other.

7. The main body of the first door body and the main body of the second door body are arranged at a predetermined inclination angle, The platform fence device according to claim 6, wherein the bent portion offsets an inclination angle between the main body of the first door body and the main body of the second door body.

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