JP7086731B2 - Home step device - Google Patents

Description

The present invention relates to a technique for preventing a fall into a gap between a platform and a vehicle.

As a technique for preventing a fall into a gap between a platform and a vehicle, Patent Document 1 describes a platform step device including a state detection sensor for a motor or the like and a position detection sensor for the movable step in order to determine whether the movable step is normal or abnormal. Is disclosed.

Japanese Unexamined Patent Publication No. 2013-63693

When installing the home step device in the home, instead of installing the device directly in the notch of the home, a housing member for accommodating the device may be installed and the device may be housed in the housing member. A filler such as mortar is filled between the accommodating member and the platform, but if there is an insufficiently filled portion in the gap between the accommodating member and the platform, the home step device may become unstable.
In view of the above background, an object of the present invention is to cool an apparatus without using a driving force dedicated to cooling.

In order to solve the above-mentioned problems, in the present invention, the driving force is transmitted from the driving means to the step housed in the housing to move the step in and out, and the driving force is transmitted to rotate the blower member. A home step device for cooling equipment in a housing is provided as a first aspect.

According to the home step device of the first aspect, the device can be cooled without using a driving force dedicated to cooling.

In the home step device of the first aspect described above, a configuration in which the driving force is transmitted by using a chain or a belt that rotates together with the blower member may be adopted as the second aspect.

According to the home step device of the second aspect, it is possible to facilitate cooling of the device arranged away from the position where the driving force is generated.

In the home step device of the first or second aspect described above, a configuration in which the rotation direction of the blower member changes depending on whether the step is taken out or retracted may be adopted as the third aspect.

According to the home step device of the third aspect, the device to be cooled can be cooled during both the steps in and out of the step without the rotation direction switching mechanism.

In the home step device of the third aspect described above, the configuration that the blower member is a centrifugal fan that blows air in the centrifugal direction may be adopted as the fourth aspect.

According to the home step device of the fourth aspect, one blower member can perform cooling during both steps in and out.

In the home step device of the third or fourth aspect described above, the blower member is an axial flow fan that blows air in the direction of the rotation axis, and the axial flow fan that blows air to the device when the step is taken out of the housing. A configuration in which an axial flow fan that blows air to the device when the step is retracted into the housing is provided may be adopted as the fifth aspect.

According to the home step device of the fifth aspect, the air volume can be increased as compared with the case of using a centrifugal fan.

The figure which shows the appearance of the home step apparatus which concerns on Example. Diagram showing the appearance of the home step device Diagram showing the appearance of the home step device The figure showing the appearance of the home step device with the top plate removed. The figure which shows the plan view of the home step device which removed the top plate part. Diagram showing steps Diagram showing the locked state of the step The figure which shows the manual drive part and the blast cooling part. The figure which shows the blast cooling part of the modification

[1] Example FIG. 1 shows the appearance of the home equipment 1 according to the embodiment. The home equipment 1 is installed on the track side of the platform 9 (platform) of the railway station, and while preventing passengers from falling from the platform 9, it is possible to get on and off when the railway vehicle arrives at the platform 9 and when getting on and off. It is a facility that plays a role in preventing the fall of the railway. FIG. 1A shows the home equipment 1 seen from the track side, and FIG. 1B shows the home equipment 1 seen from vertically above.

The platform equipment 1 includes at least one platform door 3 and at least one platform step device 10. In this embodiment, the platform equipment 1 includes a plurality of platform doors 3 and a plurality of platform step devices 10. Each platform door 3 includes a door 4 and a storage unit 5. In this embodiment, the door 4 is arranged at a position facing the door of the stopped vehicle. The storage unit 5 stores the door 4 in an open position from one end in the horizontal direction (roles as a so-called door pocket).

Further, the storage unit 5 is prevented from passing passengers at the platform 9 to the track side by contacting the door 4 whose opposite end is in the closed position. The open position is the position of the door 4 in the most open state, and the closed position is the position of the door 4 in the completely closed state. A plurality of platform doors 3 are installed side by side over the entire extension direction A3 of the platform 9 (which is also the extension direction of the track) so as to separate the track side and the inside of the platform 9. The inside here means a portion away from the outside when the track side of the home 9 is the outside. The track side and the inside may be paraphrased as the one closer to the track (track side) and the far side (inside) of the platform 9.

The home step device 10 includes a housing 20 and a step 30, and is a device for taking in and out the step 30 housed in the housing 20. The housing 20 has a plate-like and hollow shape, and has an opening 21 on the track side. The step 30 is housed inside the housing 20 and is driven by a driving means described later to be taken in and out through the opening 21 of the housing 20. Step 30 projects into the gap between the platform 9 and the stopped vehicle and serves as a scaffolding for passengers getting on and off.

The home step device 10 moves the step 30 in the direction from the inside of the home 9 toward the track side (overhanging direction A1) to bring the step 30 into an overhanging state from the housing 20, and sets the overhanging step 30 on the track. It is moved from the side toward the inside of the home 9 (accommodation direction A2) to be accommodated in the housing 20. The home step device 10 has a shape in which the dimension of the home 9 in the extending direction A3 is longer than the dimension of the extending direction A1. The stretching direction A3 of the home 9 is assumed to be a direction orthogonal to the overhanging direction A1 and the accommodating direction A2.

The home 9 is provided with a notch 93 for installing the home step device 10. A housing member 6 is installed in the notch 93. The accommodating member 6 is a member installed in the notch 93 of the home 9 for accommodating the home step device 10. The accommodating member 6 has a shape having four surfaces excluding the upper surface and the side surface on the track side among the six surfaces of the hollow rectangular parallelepiped, and has a box shape formed inside in a size capable of accommodating the home step device 10. It is a member. The accommodating member 6 is fixed to the notch 93 by injecting a filler such as mortar between the own member and the notch 93.

The home step device 10 is installed inside the accommodating member 6 fixed to the notch 93. In this state, in the home step device 10, the upper surface 11 of the own device forms a plane substantially the same as the upper surface 91 of the home 9, and the side surface 12 (the side surface in the state where the step 30 is accommodated) on the track side of the own device is formed. It is installed so as to form a plane substantially the same as the side surface 92 of the home 9. Storage portions 5 of platform doors 3 are installed above both ends of the extension direction A3 of the platform step device 10 installed in the platform 9.

In step 30, in this embodiment, the dimension of the stretching direction A3 is substantially the same as the distance between the adjacent storage portions 5 (the width of the boarding / alighting path when the door 4 is opened). The platform door 3 and the platform step device 10 are electrically connected to a control device (not shown), and the opening and closing of the door 4 and the taking in and out of the step 30 are interlocked with each other. Specifically, for example, when the vehicle stops, step 30 first overhangs, and then the door 4 opens. Then, at the departure time, the door 4 is closed first, then the step 30 is accommodated, and the vehicle departs. If the safety of passengers is ensured, opening / closing and loading / unloading may be performed at different timings.

2 and 3 show the appearance of the home step device 10. FIG. 2 shows a home step device 10 in a state where the step 30 is housed in the housing 20, and FIG. 3 shows a home in a state where the step 30 moves in the projecting direction A1 and projects from the housing 20. The step device 10 is represented. The housing 20 includes a main body portion 40 and a top plate portion 50. The main body 40 is a box-shaped member having four surfaces of a hollow rectangular parallelepiped excluding the vertically upper surface and the surface on the track side.

The top plate portion 50 is a plate-shaped member that covers vertically above the main body portion 40, and has five top plates 51, 52, 53, 54, 55. Each top plate is made of metal or the like and has a strength that does not easily deform even when stepped on by passengers. Non-slip protrusions are formed on the upper surface of each top plate. The non-slip protrusion is also formed on the upper surface of the step 30. Each top plate is fixed to a top plate support member described later in the main body 40 with rivets. Once installed in the home 9, there are few opportunities to remove the top plate, but if necessary for repairs, etc., the top plate can be removed by removing the rivet using a drill or the like.

However, since it takes time and effort, an opening 56 for a worker (for example, a station employee) to manually perform work is provided on the top plate 53 in order to cope with an emergency situation such as a malfunction in which step 30 does not move. The opening 57 is provided on the top plate 54. The top plate 53 has a lid 58 that covers the opening 56, and the top plate 54 has a lid 59 that covers the opening 57. The lids 58 and 59 are attached to and detached from the top plates 53 and 54 using a special jig so that they cannot be removed by the general public.

FIG. 4 shows the appearance of the home step device 10 from which the top plate portion 50 is removed, and FIG. 5 shows a plan view thereof. In addition, in FIGS. 5 and later, the non-slip protrusions are not shown in order to make the figure easier to see. The home step device 10 includes a main body 40, a top plate support member 41-1 and four 41-2s (referred to as “top plate support member 41” when they are not distinguished from each other), and guide rails 42-1 and 42-. 2 (referred to as "guide rail 42" when not distinguishing between them), motor drive unit 43, electromagnetic brake unit 44, manual drive unit 45, manual lock unit 46, electric lock unit 47, and blower cooling unit. It is equipped with 48.

The main body 40 has side plates 401 and 402, a rear plate 403, and a bottom plate 404, and has a shape having the above-mentioned four surfaces. The top plate support member 41 is provided at a position corresponding to the end of each top plate and supports each top plate. The top plate support member 41-1 is attached to the vertically upper ends of the side plates 401, 402 and the rear plate 403 of the main body 40. The top plate support member 41-2 is attached to the bottom plate 404 at a position where adjacent top plates are in contact with each other. Each top plate support member 41 is provided with a hole for attaching the above-mentioned rivet, and each top plate is fixed.

The guide rail 42 is provided in the housing 20 including the top plate portion 50, and guides the step 30 in the longitudinal direction of the own rail. Since the guide rail 42 is provided so that the longitudinal direction is along the overhanging direction A1, the guide rail 42 guides the step 30 in the overhanging direction A1 and the accommodating direction A2. The guide rail 42-1 is arranged on the right side of the center when the home step device 10 is viewed from the extension direction A1, and the guide rail 42-2 is arranged when the home step device 10 is viewed from the extension direction A1. It is located on the left side of the center.

The motor drive unit 43 has a motor 431 and a ball screw 432, and the ball screw 432 converts the rotational force of the motor 431 into a force in the direction along the extension direction A1 and transmits the force to step 30 to drive the step 30. do. In this way, the motor drive unit 43 operates by electric power, transmits the driving force to the step 30 housed in the housing 20, and moves the step 30 in and out. The motor drive unit 43 is an example of the "drive means" of the present invention. The motor drive unit 43 is arranged at the center in the extension direction A3 when the home step device 10 is viewed from the extension direction A1. Here, step 30 will be described with reference to FIG.

FIG. 6 represents step 30. FIG. 6A shows the step 30 seen from above vertically, and FIG. 6B shows the step 30 seen from the accommodating direction A2. The step 30 has a step portion 31, a support portion 32, and a transmission portion 33. The step portion 31 is a plate-shaped portion that projects from the housing 20 and is trampled by passengers. The support portion 32 has rail portions 32-1 and 32-2 and a plate portion 32-3.

The rail portions 32-1 and 32-2 are arranged vertically above the guide rail 42 and are supported by the guide rail 42. The rail portion 32-1 has a caster portion 35-1 having a shape movable on the rail vertically below, and the caster portion 35-1 moves on the guide rail 42-1. The rail portion 32-2 also has the caster portion 35-2 vertically below, and the caster portion 35-2 moves on the guide rail 42-2.

The plate portion 32-3 is a plate-shaped member that is thicker than the step portion 31 and has a shape in which the step portion 31 is slightly smaller, and supports almost the entire step portion 31 from vertically below. In the plate portion 32-3, the rail portions 32-1 and 32-2 are welded to the plate portion 32-3, and the passenger load applied to the step portion 31 is integrated with the rail portions 32-1 and 32-2. Supporting. The transmission unit 33 has a nut hole 34 into which the ball screw 432 of the motor drive unit 43 is inserted. When the ball screw 432 inserted in the nut hole 34 rotates, the rotational force of the ball screw 432 is transmitted as a driving force for linear movement.

As described above, the step 30 is an integrated step in which the step portion 31 that the passenger directly steps on and the support portion 32 that supports the step portion 31 and is also guided by the guide rail 42 are integrated. Further, the home step device 10 moves the integrated step 30 guided in the longitudinal direction of the guide rail 42 in and out of the housing 20 by the driving force transmitted to the transmission unit 33.

Return to FIG. The electromagnetic brake unit 44 is a portion that applies a brake so that the step 30 in the overhanging state does not move because it is dangerous even if it moves in either the overhanging direction A1 or the accommodating direction A2. The electromagnetic brake portion 44 is installed so as to come into contact with the rail portion 32-2 to apply the brake. The manual drive unit 45 is a means for manually moving the step 30 in and out when an abnormality occurs in the motor drive unit 43 or the like and the step 30 cannot be taken in and out normally.

In the same case, the manual lock portion 46 is a means for fixing (locking) the step 30 manually housed in the housing 20 so as not to move. The rail portion 32-1 is provided with a hole for locking. The manual lock portion 46 has a rod-shaped portion, and the rod-shaped portion is inserted into the hole to fix the step 30. The electric lock portion 47 is a means for locking the step 30 so as not to move because it may come into contact with the vehicle if the step 30 in the housed state moves in the overhanging direction A1.

The rail portion 32-1 of the step 30 has a locking member 321. The lock member 321 is provided with a lock hole 322. The electric lock portion 47 is a solenoid for inserting and removing the iron core 471 (blanger), and locks the step 30 by inserting the extruded iron core 471 into the lock hole 322.
FIG. 7 shows a state in which step 30 is locked. In FIG. 7A, the step 30 housed in the housing 20 is shown.

In FIG. 7 (b), the X portion including the electric lock portion 47 in FIG. 7 (a) is enlarged and shown. The electric lock portion 47 is arranged at a position where the lock hole 322 is in front when the step 30 is completely housed in the housing 20, and when the step 30 is completely housed, the iron core 471 is pushed out and locked. Insert into hole 322. In this embodiment, it is assumed that the electric lock portion 47 is energized when the iron core 471 is extruded.

That is, the electric lock portion 47 is a push-type solenoid that pushes out the iron core 471 when energized. Since the step 30 is housed for a longer time, it is necessary to cool the electric lock portion 47 that generates heat. The blast cooling unit 48 has a fan and is a means for blowing air to the electric lock unit 47 that generates heat to cool the unit. The blower cooling unit 48 rotates the fan by the driving force of the motor driving unit 43 transmitted via the manual driving unit 45. The mechanism of this transmission will be described with reference to FIG.

FIG. 8 shows a manual drive unit 45 and a blower cooling unit 48. The step 30 receives the driving force not only from the motor driving unit 43 but also from the manual driving unit 45 and is taken in and out of the housing 20. The manual drive unit 45 includes a first gear 451, a roller chain 452, a handle gear 453, a crank handle 454, and a second gear 455. The first gear 451 and the second gear 455 are gears (also referred to as sprockets) on which the roller chain 452 is hung.

The roller chain 452 is an endless chain having a large number of holes like a bicycle chain, and rotates together with the sprocket by inserting the teeth of the rotating sprocket into each hole. The handle gear 453 is a gear (sprocket) to which the crank handle 454 is attached, and a roller chain 452 is also hung on the handle gear 453. The crank handle 454 is connected to the handle gear 453 and rotates on the same rotation axis as the handle gear 453 by turning the handle located at a position away from the rotation axis of the handle gear 453.

When a worker (for example, a station employee) rotates the crank handle 454, the handle gear 453 rotates, the roller chain 452 hung on the handle gear 453 also rotates, and the first gear 451 and the second gear 455 also rotate accordingly. do. The second gear 455 is connected to a conversion mechanism (for example, a spur gear and a linear gear) that converts the rotational motion of the second gear 455 into a linear motion of the transmission unit 33 in step 30.

When the second gear 455 rotates while the power of the motor 431 and the electromagnetic brake unit 44 is turned off, the transmission unit 33 moves in the overhanging direction A1 and the accommodating direction A2. At that time, when the transmission unit 33 moves, the ball screw 432 inserted in the transmission unit 33 rotates accordingly. On the contrary, when the motor 431 supplied with power rotates the ball screw 432 to move the transmission unit 33, the linear motion of the transmission unit 33 is converted into the rotational motion of the second gear 455 by the above-mentioned conversion mechanism, and the roller. The chain 452 and the first gear 451 rotate.

The blower cooling unit 48 includes a roller chain 481, a fan gear 482, and a blower fan 483. The roller chain 481 is an endless chain that rotates together with the sprocket, like the roller chain 452. The first gear 451 has two layers, the roller chain 452 is hung on the lower layer side, and the roller chain 481 is hung on the upper layer side.

The roller chain 481 is also hung on the fan gear 482, and when the first gear 451 rotates, the fan gear 482 also rotates. A blower fan 483 is fixed to the fan gear 482. The blower fan 483 has a columnar rotating shaft 484 and eight blades 485. The blades 485 are all plate-shaped members, and their surfaces are along the centrifugal direction around the rotation shaft 484 (the direction in which the centrifugal force acts when the rotation shaft 484 rotates, also called the radiation direction). It is attached to the rotating shaft 484.

When these blades 485 rotate together with the rotation shaft 484, they send out wind in the centrifugal direction. That is, the blower fan 483 is a centrifugal fan that blows air in the centrifugal direction. The blower fan 483 is an example of the "blower member" of the present invention. As described above, the blower cooling unit 48 transmits the drive force for driving the step 30 (the drive force generated by the motor drive unit 43) to rotate the blower fan 483, and the electric lock unit which is a device inside the housing 20. Cool 47.

In this embodiment, by using the driving force for driving the step 30 in this way, the device (electric lock portion 47) can be cooled without using the driving force dedicated to cooling. Further, the blower cooling unit 48 transmits the driving force by using the roller chain 481 that rotates together with the blower fan 483. Further, the above-mentioned transmission unit 33 moves in the opposite direction between the time of projecting and the time of accommodating in step 30.

Therefore, the direction of the rotational motion converted by the conversion mechanism is also opposite, and the rotational directions of the roller chain 481 and the blower fan 483 that rotate accordingly are also opposite. That is, the direction of rotation of the blower fan 483 changes depending on whether the step exits the housing 20 or retracts into the housing 20. However, the blower fan 483 is a centrifugal fan as described above, and the centrifugal fan blows air in the centrifugal direction regardless of the rotation direction.

For example, when an axial flow fan that blows air in the direction of the rotation axis is used, the direction of the air is also opposite when the direction of rotation is opposite. It is conceivable to blow air to the object to be cooled. On the other hand, in this embodiment, if the cooling target (electric lock portion 47) is arranged in the centrifugal direction of the blower fan 483, the air is always blown to the cooling target even if the rotation direction changes due to the loading and unloading of step 30. Can be done. As a result, the device to be cooled can be cooled during both the loading and unloading periods of step 30 without the rotation direction switching mechanism.

[2] Modifications The above-mentioned examples are merely examples of the implementation of the present invention, and may be modified as follows. Moreover, you may combine Examples and each modification as needed.

[2-1] Driving force transmission method In the embodiment, the driving force is transmitted by using the roller chain 452 and the roller chain 481, but the driving force transmission method is not limited to this. For example, a belt may be used instead of the roller chain. Further, a plurality of gears may be arranged instead of them to transmit the driving force. However, for example, the first gear 451 and the fan gear 482 shown in FIG. 8 are considerably separated from each other as shown in FIG. 5, so that in the method using a plurality of gears, a large number of gears must be arranged.

As the number of gears increases, the frictional resistance increases, and the accuracy of gear arrangement and shape must be improved. On the other hand, in the roller chain and the belt, the frictional resistance and the required high accuracy are not easily affected by the distance between the power source (grip 458) and the transmission destination (second gear 455). Therefore, it is possible to facilitate cooling of the equipment arranged away from the position where the driving force is generated, as compared with the case where the driving force is transmitted using only the gear.

[2-2] Blower member In the embodiment, a centrifugal fan is used as the blower member, but the present invention is not limited to this, and for example, an axial flow fan (a fan that blows air in the direction along the rotation axis) may be used. Even in that case, by transmitting the driving force for driving the step 30 (driving force generated by the motor driving unit 43) to rotate the blower member, the device can be used without using the driving force dedicated to cooling as in the embodiment. Can be cooled.

If there is only one axial flow fan, the air is blown to the cooling target only during one of the periods of taking in and out of step 30, so that the following configuration may be used to blow air during both periods.
FIG. 9 shows the blast cooling unit 48a of this modified example. The blower cooling unit 48a includes roller chains 481-1 and 481-2, fan gears 482-1 and 482-2, and blower fans 483-1 and 483-2, which are axial flow fans that blow air in the direction of the rotation axis. Has.

The manual drive unit 45a of this modification is the first gear 451a in which the bevel gear is fixed to the sprocket on which the roller chain 452 is hung, and the gears 456-1 and 456- in which the sprocket is fixed to the bevel gear that meshes with the first gear 451a. Has 2 and. Roller chains 481-1 and 481-2 are hung on the sprockets of gears 456-1 and 456-2, respectively, and roller chains 481-1 and 481-2 are hung on fan gears 482-1 and 482-2, respectively.

Blower fans 483-1 and 483-2 are coaxially fixed to the fan gears 482-1 and 482-2, respectively. For example, the blower fan 483-1 blows air in the direction A4 toward the electric lock portion 47 when the step 30 moves in the overhanging direction A1, and blows air in the opposite direction A5 when the step 30 moves in the accommodating direction A2. do. On the other hand, the blower fan 483-2 blows air in the direction A6 toward the electric lock portion 47 when the step 30 moves in the accommodation direction A2, and in the opposite direction A7 when the step 30 moves in the overhanging direction A1. Blow.

As described above, in this modification, the blower fan 483-1 that blows air to the equipment to be cooled when the step 30 is taken out from the housing 20 and the equipment to be cooled when the step 30 is retracted into the housing 20. A blower fan 483-2 for blowing air is provided. As a result, as in the embodiment, the device to be cooled can be cooled during both the steps in and out of the step without the rotation direction switching mechanism.

In the embodiment, by providing the blower fan 483 which is a centrifugal fan, such cooling can be performed with only one blower member, so that the installation space of the blower member can be increased as compared with the example of FIG. It can be made smaller. On the other hand, since the axial flow fan has a larger air volume than the centrifugal fan, in the example of FIG. 9, the installation space is larger than that when the centrifugal fan is used, but the air volume can be increased. ..

The blast cooling unit of this modification is not limited to that shown in FIG. For example, if the object to be cooled is the motor itself that generates the driving force and the motor is a shaft-penetrating type motor, the axial flow fan may be attached to the front and rear rotating shafts in the same direction. When the motor changes the direction of rotation by moving the step in and out, the motor itself to be cooled can be cooled during both the steps in and out.

In addition to the above, for example, a mixed flow fan or a cross flow fan may be used as the blower member. In either case, a device capable of cooling the device to be cooled by transmitting and rotating the driving force for driving the step 30 (driving force generated by the motor driving unit 43) may be used.

[2-3] Electric lock portion The electric lock portion is a push type solenoid in the embodiment, but may be a pull type solenoid (the iron core 471 is retracted by energizing). Even in that case as well, heat is generated while the step 30 is overhanging, so it is desirable that the step 30 be cooled by the blower cooling unit.

[2-4] Cooling target The cooling target by the blower cooling unit is not limited to the above-mentioned equipment (electric lock unit and motor). In addition to these, any device that generates heat, such as an electromagnetic brake unit, may be targeted for cooling.

1 ... Home equipment, 6 ... Accommodating member, 10 ... Home step device, 20 ... Housing, 30 ... Step, 31 ... Step part, 32 ... Support part, 40 ... Main body part, 50 ... Top plate part, 41 ... Top plate Support member, 42 ... guide rail, 43 ... motor drive unit, 44 ... electromagnetic brake unit, 45 ... manual drive unit, 46 ... manual lock unit, 47 ... electric lock unit, 48 ... blower cooling unit, 451 ... first gear, 452 ... Roller chain, 455 ... 2nd gear, 471 ... Iron core, 481 ... Roller chain, 482 ... Fan gear, 483 ... Blower fan.

Claims (5)

A home step device that transmits a driving force from a driving means to a step housed in a housing to move the step in and out, and transmits the driving force to rotate a blower member to cool the equipment in the housing. The home step device according to claim 1, wherein the driving force is transmitted by using a chain or a belt that rotates together with the blower member. The home step device according to claim 1 or 2, wherein the rotation direction of the blower member changes depending on whether the step comes out or retracts. The home step device according to claim 3, wherein the blower member is a centrifugal fan that blows air in the centrifugal direction. The blower member is an axial flow fan that blows air in the direction of the rotation axis, and an axial flow fan that blows air to the device when the step is taken out of the housing and a shaft that blows air to the device when the step is retracted into the housing. The home step device according to claim 3 or 4, provided with a flow fan.

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