JP7369025B2 - Detection device - Google Patents

Description

The present invention relates to a detection device, and more particularly, to a detection device provided in an opening/closing body such as a shutter.

Shutters that open and close frequently, such as grille shutters installed at the entrances and exits of parking lots of condominiums, are required to be safer because vehicles enter and exit frequently. Preventing vehicle collisions with the shutter is required.

Some of these shutters use microwave sensors to prevent vehicle collisions, but since microwave sensors are motion detection sensors, they can detect moving vehicles, but cannot detect stopped vehicles. The problem is that vehicles cannot be detected.

Another method is to install a pole in front of both ends of the opening in the width direction and install a photoelectric sensor that forms an optical axis in the width direction of the opening to detect objects such as vehicles approaching the opening. Installation conditions are limited due to the need for underground wiring for the sensor and problems such as parking space, making installation difficult in many cases.

A system (Patent Document 1) has also been proposed in which the opening/closing body is controlled using a sensor that sets a planar detection area (for example, a laser scanner sensor), but the laser scan sensor is provided below the guide rail. As a result, the opening width is narrowed near the ground, raising concerns about contact with vehicles and people. Further, since the laser scan sensor is provided on the guide rail, it is difficult to install the laser scan sensor when the guide rail is embedded.
JP2013-227827

An object of the present invention is to provide a detection device that can solve the above problems, although it uses a sensor that sets a planar detection area.

The technical means adopted by the present invention are:
A detection device equipped with a sensor that sets a planar detection area,
The sensor is provided above an opening that is opened and closed by an opening and closing body,
The sensor is attached such that the planar detection area forms an inclined surface that slopes from above the opening toward downward and away from the opening,
The detection device is configured such that a range near the opening is set according to a distance between the slope and the opening, and an object entering the range near the opening is detected by the slope.
In one aspect, when a sensor detects an object, a detection signal is transmitted from the detection device to a control unit, and the control unit regulates the closing operation of the opening/closing body according to the state of the opening/closing body. For example, when a detection signal is sent to the control unit while the opening and closing body is closed, the closing body stops, or after stopping, it is reversed and opened.
In one aspect, a range near the opening is set by a distance between a lower part of the inclined surface and the opening.

In one aspect, the slope of the slope is variable.
In a detection device installed on an opening/closing body that opens and closes different opening heights, by changing the inclination of the inclined surface (planar detection area), a constant range near the opening can be set. When the slopes of the slopes are the same, as the opening height increases, the distance between the lower part of the slopes and the opening increases; however, when the opening heights are different, the slopes of the slopes are made to differ, The distance between the lower part of the slope and the opening can be kept constant.
By changing the inclination of the inclined surface (planar detection area), an arbitrary range near the opening can be set according to the inclination.

In one aspect, the sensor is attached to a mounting base fixed to an upper part of the opening so that the angle can be adjusted, and by adjusting the angle of the sensor with respect to the mounting base, the inclination of the inclined surface is variable. It becomes.

In one aspect, the lower end of the slope does not reach the ground, and an undetected area is provided near the ground. By setting a non-detection area near the ground, it is possible to prevent false detections such as floating objects blown up from the ground by the wind.

In one aspect, the sensor is a laser scanner sensor.
In one aspect, the object is a vehicle.
In one aspect, the opening/closing body is installed at an entrance/exit of a parking lot.
In one aspect, the opening/closing body is a grill shutter (pipe shutter).

The detection device according to the present invention uses a sensor that sets a planar detection area to prevent a vehicle or the like from colliding with an opening/closing body, especially when it is closed.
In addition, by using a sensor that sets a planar detection area, if an object that enters the area near the opening is located at least partially on an inclined surface (planar detection area), it is possible to detect an object that is moving. It can be detected even when the object is stationary.
For example, the inclined surface (planar detection area) can appropriately detect the protruding part when a vehicle having a protruding part protruding forward from the vehicle body on the upper side of the vehicle approaches a range near the opening. can.
Since the sensor is provided above the opening that is opened and closed by the opening/closing body, the sensor does not get in the way when an object (object or person) passes through the opening.

In the case where the inclination of the inclined surface (planar detection area) is variable, even when the detection device is installed in an opening/closing body that opens and closes at different opening heights, the inclination of the inclined surface (planar detection area) is variable. By changing , it is possible to set a constant range near the opening regardless of the opening height.
By changing the inclination of the inclined surface (planar detection area), an arbitrary range near the opening can be set according to the inclination.

FIG. 2 is a side view and a front view of a shutter device including a detection device according to the present embodiment, in which a sensor has set an inclined detection area. 2 is a side view and a front view of a shutter device including a detection device according to the present embodiment, showing a state in which a vehicle is detected in the mode of FIG. 1. FIG. 2A and 2B are a side view and a front view of a shutter device equipped with a detection device according to the present embodiment, in which the opening height is larger than in FIG. 1 and the inclination of the inclined surface-shaped detection region is set small. FIG. 2 is a side view and a front view of a shutter device including a detection device according to the present embodiment, in which a substantially vertical detection area is set by a sensor. 1 to 4, the sensor is fixed to the lower surface of the lintel, while in the embodiment of FIG. 5, the sensor is fixed to the lower surface of the lintel. is attached to the bottom of the shutter case. FIG. 4 is a partially enlarged view of a sensor mounting location in the side view of FIG. 3; FIG. 2 is a partially enlarged view showing the attitude of the sensor in the embodiment shown in FIG. 1; FIG. 4 is a partially enlarged view showing the attitude of the sensor in the embodiment shown in FIG. 3; FIG. 5 is a partially enlarged view showing the attitude of the sensor in the embodiment shown in FIG. 4; It is a partially enlarged side view showing the mounting structure of the sensor (fixed to the bottom surface of the lintel). It is a partially enlarged front view showing the mounting structure of the sensor (fixed to the bottom surface of the lintel). FIG. 3 is a partially enlarged side view showing the mounting structure of the sensor (fixed to the lower surface of the shutter case). FIG. 3 is a cross-sectional view showing the positional relationship between a sensor and an embedded guide rail.

1 to 4 are a side view and a front view of a shutter device equipped with a detection device according to the present embodiment, in which a shutter storage section is formed in an upper part of an opening, and a shutter storage section is formed inside the shutter storage section. A winding shaft 1 is rotatably supported, and a shutter curtain 2 is wound around the winding shaft 1. An opening/closing machine M is provided on one side in the opening width direction of the shutter storage section, and the winding shaft 1 is rotationally driven by the opening/closing machine M to wind up/unwind the shutter curtain 2.

Left and right guide rails 3 are erected at both ends of the opening in the width direction, and the left and right guide rails 3 receive and guide both ends of the shutter curtain 2 in the width direction when the shutter curtain is raised and lowered. The guide rail 3 has a facing surface 30 located inside and outside the guide groove that receives the widthwise end of the shutter curtain 2, a facing surface 31 facing the inside and outside of the opening, and a bottom surface 32 located at the bottom of the guide groove. , is equipped with. When the guide rail 3 is installed in an embedded manner, the facing surface 31 and the bottom surface 32 may be embedded in the wall or the frame W and not exposed to the outside (see FIG. 13).

When a shutter provided with the detection device according to this embodiment is provided, for example, at an entrance to a parking lot of an apartment complex, a grill shutter (pipe shutter) is exemplified as the shutter. However, the opening/closing body to which the detection device according to the present invention is installed is not limited, and examples of the opening/closing body include shutters in general including slat shutters, sheet shutters, panel shutters, overhead doors, and pipe shutters, and electric gates (sliding gates). , and other opening/closing bodies.

In the shutter according to this embodiment, the shutter curtain 2 is opened by a push button input from a one-point remote control operation unit. When the button on the operating section is pressed in the opening fully closed position, the winding shaft 1 is rotated by the drive of the opening/closing machine M to raise the shutter curtain 2 and open the opening. Then, the fully open state of the opening is maintained for a predetermined period of time, and after the elapse of the predetermined period of time, the shutter curtain 2 automatically lowers to close the opening. In addition to the remote control type operation section, an operation section (not shown) may be provided on the main body, and in this case, the operation section may be an operation section provided with an open button, a close button, and a stop button.

The shutter device according to this embodiment includes a pinching prevention sensor S1 and a foreign object entrainment prevention sensor S2. The pinch prevention sensor S1 includes a plurality of floodlights provided over a predetermined height below the expected surface 30 of one guide rail 3 and a plurality of projectors provided over a predetermined height below the expected surface 30 of the other guide rail 3. This is a multi-axis photoelectric sensor consisting of multiple light receivers installed in the opening. When an object or person is located inside the opening, the optical axis is blocked, the object or person is detected, and the detection signal is sent to the control unit. The lowering of the shutter curtain 2 is regulated by being transmitted to .

The foreign object entrainment prevention sensor S2 consists of a light emitter provided above the expected surface 30 of one guide rail 3 and a light receiver provided above the expected surface 30 of the other guide rail 3 over a predetermined height. This is a photoelectric sensor, and when the shutter curtain 2 is raised with a foreign object installed, the optical axis is blocked by the foreign object, it detects the foreign object, and a detection signal is sent to the control unit, causing the shutter curtain to close. Regulate the rise of 2.

The shutter device according to this embodiment includes a laser scanner sensor 4 that sets a planar detection area. The laser scanner sensor 4 is provided above the opening, and the laser scanner sensor 4 has a planar detection area on an inclined surface (see FIG. In FIG. 3, an inclined surface P1 is shown, and in FIG. 3, an inclined surface P2 is shown). In this embodiment, the laser scanner sensor 4 is provided above the opening at one end in the opening width direction, and forms a rectangular detection area from the upper corner of the opening. It extends over the entire width of the opening. The lower ends of the slopes (slopes P1 and P2) do not reach the ground G, and a non-detection area Q is provided near the ground G. The non-detection area Q is set to prevent false detection on the ground G, and the height of the non-detection area is, for example, about 300 mm.

In the detection device using the laser scanner sensor 4, the range near the opening is set by the horizontal distance between the slope (slope P1, P2) and the opening, and the target that enters the range near the opening is tilted. It is designed to be detected by the surface. The opening vicinity range is set corresponding to an object (for example, a vehicle) entering and exiting the opening. The range near the opening is determined, for example, by the horizontal distance A (see FIGS. 1 and 3) from the opening (the center of the guide groove of the guide rail 3) to the lower end of the slope. In addition, since the inclined surface is an inclined straight line in a side view, if the horizontal distance from the opening (the center of the guide groove of the guide rail 3) is determined at any height of the inclined straight line, The range near the opening can be uniquely set.

If the detection target is a vehicle, the horizontal distance from the opening (the center of the guide groove of the guide rail 3) to the lower end of the slope is set to, for example, about 1400 mm. Therefore, as shown in FIG. 2, when the vehicle enters the area near the opening, the laser scanner sensor 4 detects the vehicle and sends a detection signal to the control section. In addition, the inclined surface (planar detection area) may be configured such that, for example, when a vehicle equipped with a protruding part on the upper side of the vehicle body that protrudes further forward than the vehicle body approaches the area near the opening, the protruding part is more than the front part of the vehicle body. The vehicle can also be detected at an appropriate position by being detected by the inclined surface above the vehicle.

Shutter control when the control unit receives a detection signal from the laser scanner sensor 4 will be described. The laser scanner sensor 4 is always in a detectable state regardless of whether or not a signal is input from the operation section, and when the laser scanner sensor 4 detects an object, a detection signal is transmitted to the control section. However, the shutter control based on the detection signal from the laser scanner sensor 4 differs depending on the state of the shutter when the control unit receives the detection signal, as described below.

If the laser scanner sensor 4 detects an object (for example, a vehicle approaching the opening) during the shutter closing operation, the lowering shutter curtain 2 stops under the control of the control unit that has received the detection signal, and then It reverses and rises, and stops with the opening fully open. Therefore, when the shutter curtain 2 is lowered and a vehicle approaches the opening and enters the vicinity of the opening, the laser scanner sensor 4 detects the vehicle and sends a detection signal to the control section, which then The descending shutter curtain 2 stops, then reverses and rises until the opening is fully open, so a vehicle that enters the area near the opening can exit the opened opening without colliding with the descending shutter curtain 2. can pass through.

When the laser scanner sensor 4 detects an object (for example, a vehicle approaching the opening or a vehicle parked near the opening) while the opening is fully open, the shutter curtain 2 does not lower.

Furthermore, when the opening is fully open, for example, if the vehicle stops straddling the opening and is not detected by the laser scanner sensors 4 inside and outside the opening, the vehicle is not detected by the pinch prevention sensor S1. , the shutter curtain 2 does not fall. Note that if the object is detected by the laser scanner sensor 4 and at the same time the object is blocking the optical axis of the anti-pinch sensor S1, the object will be detected by the laser scanner sensor 4 and the anti-pinch sensor. It can be detected by both sensors of S1. Although the lowering of the shutter curtain 2 is regulated no matter which sensor detects the detection signal, a person skilled in the art can appropriately set which sensor to prioritize the detection signal from.

The laser scanner sensor 4 according to this embodiment is mainly used to prevent a vehicle from colliding with a shutter curtain that is being lowered, and the laser scanner sensor 4 does not operate as a starting switch. When the opening is fully closed, even if a vehicle is detected by the laser scanner sensor 4, for example, the shutter curtain 2 will not rise, and the shutter curtain 2 will start rising in response to an opening signal from the operation unit, and the opening will close. Vehicles entering the vicinity can pass through the open opening. Even if the laser scanner sensor 4 detects an object (for example, a vehicle approaching the opening) during the shutter opening operation, the shutter curtain 2 continues to rise, and if a vehicle enters the area near the opening, it will not be opened. can pass through the opening.

In this embodiment, the inclination of the planar detection area set by the laser scanner sensor 4, that is, the inclined surface (the inclined surface P1 in FIG. 1, the inclined surface P2 in FIG. 3) is variable. By making the slopes of the slopes P1 and P2 variable, it is possible to set a constant detection range (range near the opening) even when the height of the opening opened and closed by the shutter differs. When the slopes formed by the laser scanner sensor 4 have the same slope, as the aperture height increases, the horizontal distance between the lower part of the slope and the opening increases; however, when the aperture heights differ, the slope of the slope increases. By making the difference, the horizontal distance between the opening and the lower part of the inclined surface (the assumed detection part) can be kept constant regardless of the opening height. As is clear from a comparison between FIGS. 1 and 3, the height of the opening in the embodiment of FIG. 3 is greater than the height of the opening in the embodiment of FIG. In the embodiment of FIG. 3, the inclination (angle with respect to the horizontal plane) of the inclined plane P2 is made larger (in the direction of approaching the vertical plane) than the inclination (angle with respect to the horizontal plane) of the inclined plane P1 in the embodiment of FIG. In this embodiment and the embodiment shown in FIG. 3, a constant detection range (horizontal distance A that determines the range near the opening) can be set regardless of the opening height.

Further, by changing the inclination of the inclined surface-shaped detection area, it is possible to set an arbitrary range near the opening according to the inclination. For example, if the entrance to a parking lot is close to the road, increasing the inclination (angle with respect to the horizontal plane) of the detection area (moving it closer to the vertical plane) will prevent false detections caused by people or objects located on the road. can do. Furthermore, as in the embodiment shown in FIG. 4, the laser scanner sensor 4 can also be used as a pinch prevention sensor by making the planar detection area a substantially vertical plane P3.

A specific configuration (angle adjustment mechanism) of the inclination of the planar detection area (sloped surface) set by the laser scanner sensor 4 according to the present embodiment will be described. The laser scanner sensor 4 according to this embodiment includes a sensor main body 5 and a mounting bracket 6, and is mounted via the mounting bracket 6 to a mounting base 7 fixed to an upper part of the opening so that the angle can be adjusted. By adjusting the mounting angle of the laser scanner sensor 4 (sensor main body 5 + mounting bracket 6) with respect to the mounting base 7, the inclination of the planar detection area (inclined surfaces P1, P2, vertical surface P3) irradiated from the sensor main body 5 can be adjusted. is variable.

The mounting base 7 has a vertical base 70, vertical sides 71 extending in opposite directions from both ends of the base 70 in the width direction, and a horizontal upper side 72 formed at the upper end of the base 70. By fixing the upper side 72 to the upper part of the opening, it is attached in a hanging manner to the upper end of the opening. Examples of the upper portion of the opening to which the upper side 72 of the mounting base 7 is fixed include the lower surfaces 80 and 90 of the lintels and the lower surface 100 of the shutter case, as will be described later.

The laser scanner sensor 4 is fixed to the mounting base 7 in a predetermined posture by positioning the mounting bracket 6 between the sides 71 of the mounting base 7 and using the upper rotating support shaft 60 and the lower angle adjustment fixed shaft 61. be done. More specifically, the laser scanner sensor 4 is rotatably supported with respect to the mounting base 7 via an upper rotation support shaft 60, and a rotation support shaft is provided on the opposing side 71. An arcuate guide groove 73 centered at 60 is formed, and the lower angle adjustment fixed shaft 61 is movable within the guide groove 73 and can be fixed in position.

A plurality of marks 74 serving as angle marks are provided along the guide groove 73 on at least one side 71, and the laser scanner sensor 4 is rotated so that the angle adjustment fixed shaft 61 coincides with the predetermined mark 74. and fix the angle adjustment fixed shaft 61 at a desired position. In the embodiment shown in FIG. 7, the angle adjustment fixed shaft 61 is aligned with the second mark 74 from the right, the laser scanner sensor 4 is fixed at a predetermined angular attitude with respect to the vertical plane, and the laser scanner The laser irradiated from the sensor 4 forms an inclined surface P1. In the embodiment shown in FIG. 8, the angle adjustment fixed shaft 61 is aligned with the fourth mark 74 from the left, the laser scanner sensor 4 is fixed at a predetermined angular posture with respect to the vertical plane, and the laser scanner The laser irradiated from the sensor 4 forms an inclined surface P2. In the embodiment shown in FIG. 9, the angle adjustment fixed axis 61 is aligned with the first mark 74 from the left, the laser scanner sensor 4 is fixed in a substantially vertical posture, and the laser scanner sensor 4 is irradiated with light. The laser forms a vertical plane P3. In the illustrated embodiment, eight marks 74 are provided, but the number of marks 74 is not limited. Furthermore, the shape of the mark 74 is not limited to that illustrated.

The angle adjustment fixed shaft 61 is composed of, for example, a screw 61', and the shaft (angle The position of the adjustment fixed shaft 61) is fixed, and by loosening the screw 61', the shaft portion (angle adjustment fixed shaft 61) can be moved along the guide groove 73. Further, the rotation support shaft 60 may be constructed from a shaft portion of a screw 60'.

In this embodiment, two laser scanner sensors 4 are provided on one side in the width direction of the opening in the upper part of the opening, located inside and outside with the guide groove of the guide rail 3 interposed therebetween. In this embodiment, the laser scanner sensor 4 is located on the side where the switch M is provided, and the control unit (not shown) provided near the switch M is electrically connected to the laser scanner sensor 4. Wiring 40 can be done smoothly. Note that in FIG. 10, one (outer) laser scanner sensor 4 is omitted.

In the embodiments shown in FIGS. 1 to 4, the shutter storage section is formed in the ceiling CL, and as shown in FIG. 9 are provided between which a hoistway for the shutter curtain 2 is formed. The inner lintel 8 has a horizontal lower surface 80, which is exposed above the opening. The outer lintel 9 has a horizontal lower surface 90, which is exposed above the opening. By fixing the upper side 72 to the lower surface 90 of the outer lintel 9 at one end in the opening width direction, the mounting base 7 of the outer laser scanner sensor 4 is mounted close to the upper end of one of the guide rails 3 and attached to the lower surface. It is attached so that it hangs down from 90. One side 71 of the mounting base 7 of the outer laser scanner sensor 4 is close to or in contact with the outer prospective surface 30 of the guide rail 3 . By fixing the upper side 72 to the lower surface 80 of the inner lintel 8 at one end in the opening width direction, the mounting base 7 of the inner laser scanner sensor 4 is mounted close to the upper end of one of the guide rails 3 and attached to the lower surface. It is attached so that it hangs down from 80. One side 71 of the mounting base 7 of the inner laser scanner sensor 4 is close to or in contact with the inner prospective surface 30 of the guide rail 3 .

The laser scanner sensor 4 consists of a scanner body 5 and a mounting bracket 6, and is provided above the opening and at one end in the width direction of the opening by fixing the mounting bracket 6 to the mounting base 7. The laser scanner sensor 4 is provided at a corner of one end in the width direction of the opening at the upper end of the opening, and is prevented from coming into contact with objects or people passing through the opening as much as possible. Since the laser scanner sensor 4 according to this embodiment forms a rectangular detection area, the detection area irradiated from the laser scanner sensor 4 provided at the corner is planar so as to cover the entire width of the opening. It is formed in an expansive manner.

A groove or opening is formed in the upper side 72 of the mounting base 7, through which the wiring 40 of the laser scanner sensor 4 is inserted, and insertion parts 81, 91 for the wiring 40 are formed in the lower surfaces 80, 90 of the lintel (see FIG. 6). The wiring 40 of the laser scanner sensor 4 extends into the shutter housing through the groove and the insertion parts 81 and 91 (see FIG. 10), and the wiring 40 of the laser scanner sensor 4 extends into the shutter storage part (see FIG. ) is electrically connected to the

In the embodiment shown in FIG. 5, a shutter case 10 is attached to the frame W, and the internal space of the shutter case 10 serves as a shutter storage section. In the embodiments shown in FIGS. 1 to 4, the laser scanner sensor 4 is fixed to the lower surfaces 80 and 90 of the lintel, whereas in the embodiment shown in FIG. 5, the laser scanner sensor 4 is attached to the lower surface 100 of the shutter case 10. ing. More specifically, the upper side 72 of the mounting base 7 is fixed to one end side portion of the lower surface 100 of the shutter case in the opening width direction. An insertion portion for the wiring 40 is formed in the lower surface 100 of the shutter case, and the wiring 40 of the laser scanner sensor 4 extends into the shutter case 10 through the groove and the insertion portion (see FIG. 12).

The laser scanner sensor 4 according to the present embodiment is attached to the upper part of the opening in a state that is located inside the upper end part of the prospective surface 30 of one guide rail 3 (the side where the opening/closing machine M is provided). In the illustrated embodiment, one side 71 of the mounting base 7 is close to or in contact with the upper end portion of the expected surface 30 of the guide rail 3, and the laser scanner sensor 4 is attached to the expected surface 30 of the guide rail 3. It is close to the upper end of. In this way, by providing the laser scanner sensor 4 inside the prospective surface 30 of the guide rail 3 in the upper part of the opening (the lower surfaces 80 and 90 of the lintels and the lower surface 100 of the shutter case), the shutter device The laser scanner sensor 4 can be installed without being restricted by the finish on site (embedding of guide rails, finishing of exterior wall tiles, etc.).

For example, as shown in FIG. 13, when the guide rail 3 is installed in an embedded manner, the facing surface 31 and bottom surface 32 of the guide rail 3 may be buried in the wall or the frame W and not exposed to the outside. be. Even in such a built-in guide rail 3, by providing the laser scanner sensor 4 in the upper part of the opening (lintel bottom surfaces 80, 90 and shutter case bottom surface 100), the on-site finishing of the shutter device (guide rail embedding). Also, in the embedded guide rail 3, the prospective surface 30 is exposed to the outside, so the laser scanner sensor 4 can be placed close to the upper end portion of the prospective surface 30. The laser scanner sensor 4 located at the upper corner of the opening does not spoil the appearance of the shutter device, and does not interfere with the passage of objects or people passing through the opening by coming into contact with them. .

3 Guide rail 30 Prospective surface 4 Laser scanner sensor 5 Sensor main body 6 Mounting bracket 7 Mounting base 8 Inner lintel 80 Lower surface 9 Outer lintel 90 Lower surface 10 Shutter case 100 Lower surface A Distance between inclined surface and opening P1, P2 Inclined surface Q Undetected area

Claims (5)

A detection device equipped with a sensor that sets a planar detection area,
The sensor is provided above an opening that is opened and closed by an opening and closing body,
The sensor is attached such that the planar detection area forms an inclined surface that slopes from above the opening toward downward and away from the opening,
A range near the opening is set by a distance between the slope and the opening, and the slope is configured to detect an object entering the range near the opening,
The lower end of the slope does not reach the ground, and an undetected area is provided near the ground.
Detection device. The sensing device according to claim 1, wherein the slope of the slope is variable. The sensor is attached to a mounting base fixed to an upper part of the opening so that its angle can be adjusted, and by adjusting the angle of the sensor with respect to the mounting base, the inclination of the inclined surface is variable.
The detection device according to claim 2. The detection device according to any one of claims 1 to 3 , wherein the sensor is a laser scanner sensor. The detection device according to any one of claims 1 to 4 , wherein the target is a vehicle.

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