JP2005105810A - Entrance/exit control gate device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an entrance and exit control gate device which reduces an impact caused when a user comes into contact with a door and also an impact applied to the main body of the gate device when the door opens. <P>SOLUTION: Rotating positions of the doors 10, 11 are detected by a rotary encoder 35 and on the basis of the position detect output by the rotary encoder 35, the acceleration control is carried out with a control device 50 at the early stage of the rotation. Then, a constant speed is kept until a motor brake is turned on intermittently at the predetermined deceleration starting position, a dc motor 24 is controlled its drive by using the motor brake in combination with an electromagnetic brake 25 near a rotating stop position so as to stop the door 10, 11 at a designated position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an entrance / exit management gate device for managing the entrance / exit of a person, and in particular, to reduce the impact when a person contacts the door to be closed and the impact on the gate device body when the door is opened. It relates to the access control gate device.

  The entrance / exit management gate device manages the user's traffic by controlling the opening and closing of the door.For example, the entrance / exit management gate device determines whether the user can pass based on data presented by the entering / exiting user, and based on the determination result, There is one that controls opening and closing of a door provided in the gate device body. As such an access control gate device, for example, there is an automatic ticket gate at a station.

  For example, in the case of a normal open type in which the home position of the door is an open position, the conventional automatic ticket gate determines that the inserted ticket is invalid and the door is moved to the home position by the output of the detection element for detecting the home position. After confirming that it is in the (door open position), the motor is turned on to control the rotation in the door closing direction. When the door is rotated and the detection element for detecting the closed position detects that the door is in the closed position, the motor is turned off to stop the rotation of the door. In the case of the normally closed type in which the home position of the door is the closed position, if the inserted ticket is determined to be valid, the door is at the home position (door closed position) by the output of the detection element for detecting the home position. After confirming this, the motor is turned on to control the rotation in the door opening direction. When the door is rotated and the detection element for detecting the open position detects that the door is in the open position, the motor is turned off. It is the structure which stops rotation of a door (for example, refer patent document 1).

No. 8-10825

However, like the automatic ticket gate shown in Patent Document 1, the conventional access control gate device uses a detection element that detects an open position and a closed position when driving a door from open to closed or from closed to open. Only the motor is turned on and off based on the detection output, and the speed control of the motor according to the door position is not performed. The access control gate device requires a certain level of door speed to prevent unauthorized passers-by and pass smoothly, so if a passer-by touches the door that is about to close, a strong impact will be given to the user. There is a risk of giving. Further, when the door is driven from closed to open, a strong impact is given to the gate device body.
The present invention has been made paying attention to the above-mentioned problems, and an object thereof is to provide an access control gate device capable of reducing the impact at the time of contact between the user and the door and the impact on the gate device body when the door is opened. .

  For this reason, the invention according to claim 1 is a door position detection means for detecting a rotation position of the door in an entrance / exit management gate device that controls the opening and closing of the door provided in the gate device main body and manages the passage of the user. Based on the motor for driving the door and the position detection output of the door position detection means, the motor is decelerated so that the door speed gradually decreases from a predetermined door position before the rotation stop position to the rotation stop position. And a control means for controlling.

  In such a configuration, when the door position detection means detects a predetermined door position before the rotation stop position, the control means receives the detection output and controls the motor to decelerate so that the door speed gradually decreases. As a result, the door speed gradually decreases from the stop position to the stop position, so that it is possible to reduce the impact when the user contacts the door and the impact on the gate device body.

  An electromagnetic brake for applying a braking force to the motor shaft of the motor is provided as in claim 2, and the control means intermittently generates a braking torque from the predetermined door position to the rotation stop position. It is good to make it the structure which carries out deceleration control by functioning as a motor brake, turns on the electromagnetic brake in the vicinity of the rotation stop position, and stops the door at the rotation stop position by the motor brake and the electromagnetic brake.

  In such a configuration, the door speed is gradually reduced by the motor brake, and the door is stopped by adding the braking force of the electromagnetic brake to the braking force by the motor brake near the stop position. As a result, the door can be reliably stopped at a predetermined stop position even if the deceleration start position of the motor brake is delayed as compared with the case where the motor brake is decelerated alone, and the door can be opened and closed quickly while reducing the impact. become able to.

According to a third aspect of the present invention, the control means is configured to turn off the motor brake and adjust the braking force of the electromagnetic brake to hold the door at the stop position after a predetermined time has elapsed since the electromagnetic brake was operated. It is good to do.
In such a configuration, the holding force for holding the door at the stop position can be adjusted by the electromagnetic brake.

  According to a fourth aspect of the present invention, the control means may be configured to accelerate the motor so that the door speed gradually increases from a rotation start position to another predetermined door position set in advance before the predetermined door position.

More specifically, the door position detecting means is a rotary encoder that is pivotally supported by the gate device main body to detect the rotation position of the door shaft to which the door is attached. Good.
In such a configuration, the rotational direction of the door can also be detected by the rotary encoder.

The rotary shaft of the rotary encoder is arranged in parallel with the door shaft arranged in the vertical direction in the gate device main body, and a timing belt is used for the door shaft and the rotary shaft of the rotary encoder. It is preferable that the belt transmission mechanism be used for connection.
With this configuration, the rotational displacement of the door shaft is reliably transmitted to the rotational shaft of the rotary encoder, and the rotational displacement of the door shaft can be detected with high accuracy.

The motor shaft of the motor is arranged in parallel with a door shaft that is arranged in the vertical direction on the gate device main body and to which the door is attached, and the timing shaft is used for the motor shaft and the door shaft. It is preferable that the belt transmission mechanism be connected.
In such a configuration, the power transmission system is simplified and the cost can be reduced. Further, the motor shaft can be arranged in the vertical direction close to the door shaft, and the gate device main body can be made compact. Furthermore, since the door can be rotated by 180 °, it is possible to manage traffic with a pair of doors even in the case of bidirectional traffic.

  According to the access control gate device of the present invention, since the door speed is reduced near the rotation stop position, the impact when the user contacts the door and the impact on the gate device body can be reduced. Safety can be secured and the durability of the gate device can be improved.

  Further, if the door is stopped by using both the motor brake and the electromagnetic brake, the deceleration start position can be delayed as compared with the case where the motor brake is used alone. Therefore, the door can be opened and closed quickly while reducing the impact, and the passage blocking function and smooth passage are not impaired.

  Moreover, if it is set as the structure which hold | maintains a door in a stop position with an electromagnetic brake, the brake force of an electromagnetic brake can be adjusted and a door holding force can be adjusted appropriately. Therefore, it is possible to absorb the impact when the user contacts the closed door, and it is not necessary to provide a special component such as a damper joint in the power transmission system.

  If the motor shaft is arranged in the vertical direction like the door shaft and connected by a belt transmission mechanism using a timing belt, the power transmission system can be simplified and the cost of power transmission system parts can be reduced. In addition, since the door can be rotated 180 °, it is possible to manage traffic with one pair of doors without providing two pairs of doors even in bidirectional traffic, reducing the number of parts and reducing the cost of the gate device. Can be reduced. Further, since a greasing operation is unnecessary as compared with a power transmission mechanism using a cam or a link, maintenance is facilitated and noise can be reduced. In addition, since the motor can be placed close to the door shaft, the extra space in the gate device body is increased compared to the case where the motor is placed sideways, making it easier to place the equipment and making the access control gate device more compact. Can be planned.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are diagrams showing an embodiment of an access control gate device according to the present invention. FIG. 1 is a plan view, and FIG. 2 is one of a pair of gate device bodies constituting the access control gate device. The side view seen from the channel | path side of the gate apparatus main body is shown.
In the figure, the access control gate device of the present embodiment comprises a pair of gate device bodies 1A and 1B provided facing each other across the passage P as shown in FIG. The gate device main body 1A has a card insertion slot 2 on the entry side of the passage P (assuming passage in the direction of the arrow in the figure). Further, the upper surface of the gate device main body 1A is provided with a card outlet 3 for taking out a card opposite to the card insertion slot 2, a display 4 covered with a cover, and a display lamp 5 for displaying illegal passage. The gate device main body 1B has the same configuration as the gate device main body 1A, and is arranged such that the card insertion slot 2 is on the entry side when the direction opposite to the arrow in FIG. Yes.

On the side surface of the gate device body 1A on the side of the passage P, there are provided human detection units 7 to 9 made up of transmissive photosensors at three positions with intervals in the height direction. The upper human detection unit 7 has six light-emitting elements 7a constituting a light-receiving element and a transmissive optical sensor provided on the other gate device body 1B with a predetermined interval from the entry side to the advance side of the passage P. The middle human detection unit 8 includes a light receiving element provided in the other gate device body 1B and a transmission type optical sensor 3 with a predetermined interval from the entry side to the advance side of the passage P. The lower human detection unit 9 includes light emitting elements 8a to 8c, and includes a light receiving element provided on the other gate device body 1B and one light emitting element 9a constituting a transmissive optical sensor. In the following description, each of the above-described light emitting elements is described as a transmission type optical sensor. For example, when the upper human detection unit 7 detects a person, the user determines that the user is an adult, the upper human detection unit 7 does not detect, and the middle human detection unit 8 detects The user is determined to be a child (child). When only the lower human detection unit 9 detects, it is determined that the person is an unauthorized passer. Further, doors 10 and 11 for opening and closing the passage P are provided on the side surface of the gate device body 1A on the side of the passage P. In the figure, reference numerals 7a 'to 7f', 8a 'to 8c' and 9a 'denote light receiving elements constituting the light emitting element on the other side of the gate device main body 1B and the transmission type optical sensor.
Since the configuration of the side surface of the other gate device body 1B on the passage side is the same as that of the gate device body 1A, description thereof is omitted.

  The doors 10 and 11 forming a pair of the gate device main bodies 1A and 1B are configured to be integrally driven and controlled by a control device 50 as control means described later to open or close the passage. The doors 10 and 10 are in the normally open position when the entrance / exit gate device is a normally open type or a bidirectional type, and in the case of the normally closed type, the doors 10 and 10 are for users entering from the opposite direction of the arrow in the figure. As a result, the door on the entrance side is normally closed as shown in FIG. The doors 11 and 11 are in a normally closed position when the entrance / exit management gate device is a normally closed type, and in the case of a normally open type or a bidirectional type, the doors 11 and 11 are exits for a user entering from a direction opposite to the arrow direction in the figure. It becomes a door on the side and is normally in the open position as shown in FIG.

  Moreover, the doors 10 and 11 are formed with a large width in the height direction so as to prevent unauthorized intruders such as jumping, and openings 10a to 10c and 11a to 11c are provided along the height direction. . The middle openings 10b and 11b are provided at positions corresponding to the transmission sensors 7b and 7e of the upper human detection unit 7 described above. When the doors 10 and 11 are in the open position, the human detection function is hindered. It is configured so that there is no. Further, by providing the openings 10a to 10c and 11a to 11c, even if the doors 10 and 11 are made larger than a conventional gate device of this type (for example, an automatic ticket gate), an increase in weight can be suppressed, and The air resistance during operation can be reduced and the door can be opened and closed smoothly. The shape of the door is not limited to this embodiment, and may be the same size as a door of a conventional automatic ticket gate. In this case, the door may be disposed between the human detection unit 7 and the human detection unit 8, and the opening need not necessarily be provided.

FIG. 3 is a configuration diagram of the drive mechanism of the doors 10 and 11. Since the drive mechanisms of the doors 10 and 11 are the same, the door 10 will be described as an example here.
In FIG. 3, the door drive device 20 of the present embodiment has a speed reducer 23 attached to a sub bracket 22 attached to a lower part of a bracket 21, and a DC motor 24 serving as a drive source for the door 10 is disposed on the speed reducer 23. In addition, an electromagnetic brake 25 is arranged. Further, blocks 28 and 29 having bearings 26 and 27 attached thereto are fixed to the upper end portion and the lower end portion of the bracket 21, respectively, and the door shaft 30 is pivotally supported by the bearings 26 and 27 so as to be rotatable in the vertical direction. The door 10 is detachably fixed to the door shaft 30. The drive source is not limited to a DC motor, and may be another motor such as a servo motor.

  A belt transmission mechanism including a pulley 31 attached to the output shaft 23a of the speed reducer 23, a pulley 32 attached to the lower end of the door shaft 30, and a timing belt 33 stretched over the pulleys 31 and 32, In this configuration, the rotational driving force of the DC motor 24 is transmitted to the door shaft 30. The power transmission function for transmitting the power of the motor to the door shaft 30 is not limited to the belt transmission mechanism, and may be one using a link or a cam shown in Patent Document 1 or the like.

  A rotary encoder 35 as a door position detecting means is fixed to the sub bracket 34 attached to the upper part of the bracket 21. A belt transmission mechanism comprising a pulley 36 attached to the rotary shaft 35 a of the rotary encoder 35, a pulley 37 attached to the upper end of the door shaft 30, and a timing belt 38 spanning the pulleys 36, 37, allows the door to move. The rotary encoder 35 detects the amount and direction of rotation of the shaft 30.

  The rotary encoder 35 is a conventionally known one, and generates a two-phase pulse signal proportional to the amount of rotation of the rotary shaft 35a. The two-phase pulse signals are adjusted so that the phases are shifted from each other by a predetermined amount. When the rotation direction of the rotation shaft 35a is reversed, the phase is reversed, so that not only the rotation amount but also the rotation direction can be determined.

  A door opening detection sensor 40 and a door closing detection sensor 41 for detecting the opening and closing of the door as shown in FIGS. 4 and 5 are fixed to the sub bracket 34, respectively. The door opening detection sensor 40 includes a light emitting element 40a and a light receiving element 40b that are arranged to face each other with a gap therebetween. The plate member 42 is moved by the rotation of the rotary shaft 35a of the rotary encoder 35, and the light beam from the light emitting element 40a is transmitted. The door opening detection output is generated when the plate-like member 42 blocks the door. Similarly, the door closing detection sensor 41 includes a light emitting element 41a and a light receiving element 41b that are arranged to face each other with a gap therebetween, and outputs a door closing detection output when the light beam from the light emitting element 41a is blocked by the plate-like member 42. This is a configuration that occurs.

  As shown in FIG. 5, the door opening detection sensor 40 and the door closing detection sensor 41 are arranged with an angular interval of 70 ° in the circumferential direction of the rotating shaft 35a, for example. Thereby, when the door open position is set to 0 °, for example, the position where the door 10 is rotated by 70 ° from this is the door closed position. The absolute position of the door 10 can be detected by adding / subtracting the pulses of the rotary encoder 35 starting from 0 ° (door open position). The door opening / closing angle can be appropriately set by adjusting the angular interval between the door opening detection sensor 40 and the door closing detection sensor 41.

FIG. 6 is a block diagram showing the input / output relationship of the control device 50 that controls the opening and closing of the door 10.
6, the control device 50 can read / write data from / to human detection unit groups 7 to 9, door open / close detection sensors 40 and 41, a rotary encoder 35, and an inserted card. The reader / writer 51, a timer 52 for measuring an elapsed time since the electromagnetic brake 25 is turned on at the time of door speed control, a motor driving device 53 for driving and controlling the DC motor 24, and the electromagnetic brake 25 are connected. Based on the read data of the reader / writer 51 and the detection output states of the human detection unit groups 7 to 9, the doors 10 and 11 are determined to be opened and closed, and as described later, the door open and close detection sensors 40 and 41, the rotary Based on the output states of the encoder 35 and the timer 52, the motor drive device 53 and the electromagnetic brake 25 are controlled to execute door speed control in accordance with the rotational positions of the doors 10 and 11.

Next, the door opening / closing control operation of the access control gate device of this embodiment will be described with reference to the time chart of FIG. FIG. 7 shows an example in which the door is operated from the closed position (70 °) to the open position (0 °). Here, the case of the door 11 will be described in which the doorway management gate device is a normally closed type.
When the door 11 is in the closed position, the light beam directed from the light emitting element 41a to the light receiving element 41b of the door close detection sensor 41 is blocked by the plate-like member 42 attached to the rotary shaft 35a of the rotary encoder 35. An ON signal is input from the sensor 41 to the control device 50. Thereby, the control apparatus 50 confirms that the door 11 exists in a closed position. Further, the electromagnetic brake 25 is turned on to hold the door 11 in the closed position with a predetermined holding force. The holding force of the electromagnetic brake 25 is, for example, such that a person can move the door 11 by hand. In this state, when it is determined that the data of the card inserted into the card insertion slot 2 by the user is valid, the control device 50 controls the motor drive device 53 based on the output pulse of the rotary encoder 35 as shown in FIG. The speed of 24 is controlled and the door 11 is driven to open.

  That is, the electromagnetic brake 25 is turned off to release the holding force, and a preset voltage (4.8 v in this embodiment) is applied to the DC motor 24 so that the door 11 rotates in the opening direction, and the motor 24 is turned on. To do. As a result, the door 11 starts to rotate in the opening direction at a preset door speed (in this embodiment, for example, 300 encoder pulses per minute). The rotational position and rotational speed of the door shaft 30 are detected by the rotary encoder 35. Thereafter, based on the number of output pulses of the rotary encoder 35, the applied voltage of the DC motor 24 is increased stepwise by 4.8v to 24v for every preset number of pulses (corresponding to the door position), and the door speed is gradually increased. Thus, the motor 24 is controlled to be accelerated. Thereafter, the door 11 is driven in the opening direction at a constant door speed while maintaining 24v. As the rotary shaft 35a of the rotary encoder 35 rotates, the plate-like member 42 moves and the light beam of the light emitting element 41a is received by the light receiving element 41b, so that the door closing detection sensor 41 is turned off and the door 11 is turned. It is confirmed that it has moved.

  When the number of encoder pulses counted from the start of the door opening operation becomes the number of pulses corresponding to a predetermined door position set in advance before the door opening position (0 °), it is determined as a deceleration start position, and each predetermined predetermined value is set. The voltage applied to the motor 24 is stepped down by 4.8v for each encoder pulse number. At this time, a voltage of 24v having a reverse polarity is applied to the motor 24 at a predetermined number of pulses at the initial stage of the step-down to intermittently generate a braking torque in the motor 24 so that the motor 24 operates as a motor brake to control the speed of the door 11. Is gradually reduced.

When the light beam traveling from the light emitting element 40a to the light receiving element 40b of the door opening detection sensor 40 is blocked by the plate-like member 42 and the door opening detection sensor 40 is turned on, the number of encoder pulses from this point is counted and set in advance. When the specified number of pulses is reached, the electromagnetic brake 25 is turned on and the motor brake is turned on to stop the door 11 at a predetermined door opening position. The timer 52 starts counting simultaneously with the electromagnetic brake 25 being turned on, and when 500 ms elapses, the motor brake is turned off, the electromagnetic braking force is set to a predetermined value (for example, half the braking force), and the door 11 is moved to the open position. Hold on.
Even when the human detection units 7 to 9 confirm the passage of the user and drive the door 11 from the open position to the closed position, the door speed is controlled as in FIG. 7 to control the door 11 from the open position to the closed position. To drive.

  Further, for example, when the entrance / exit gate device is of a normally open type and a bidirectional type, and the user 10 entering from the direction of the arrow in FIG. When the human detection unit 7 (or 8) detects that the user has entered the passage P, the door 10 in the open position is closed by speed control as described above. When it is confirmed that the user is not present in the passage P by the human detection units 7 to 9, the speed is similarly controlled from the closed position to drive the door 10 to the original open position.

  According to the entrance / exit management gate device of the present embodiment, the doors 10 and 11 are decelerated and stopped, so that when the door 10 (or 11) is driven from the open position to the closed position to prevent the user from passing therethrough. The impact when the user contacts the door 10 (or 11) can be reduced, and the impact on the gate device main body 1A (or 1B) can be reduced when the door 10 (or 11) is driven from the closed position to the open position. It is possible to secure the safety of the user and improve the durability of the access control gate device.

In addition, since the doors 10 and 11 are stopped using both the motor brake and the electromagnetic brake 25, the deceleration start position can be delayed as compared with the case of decelerating only with the motor brake, and the doors 10 and 11 can be opened and closed while reducing the impact. The passage prevention function and smooth passage are not impaired.
Moreover, since it was set as the structure which hold | maintains the doors 10 and 11 in a stop position with the electromagnetic brake 25, it is possible to adjust the brake force of the electromagnetic brake 25, and to adjust a door holding force appropriately. Therefore, if the holding force is set so that the door 10 (or 11) can move when the user contacts the closed door 10 (or 11), the impact at the time of collision can be absorbed, and the motor 24 and the door shaft 30 can be absorbed. There is no need to provide a special component such as a damper joint in the power transmission system for connecting the two, and the cost can be reduced.

  Further, since the motor shaft is arranged in the vertical direction in parallel with the door shaft 30, the motor 24 can be brought close to the door shaft 30, and the extra space in the gate device main bodies 1A and 1B is larger than that in the case where the motor is arranged sideways. This makes it easier to arrange the equipment and make the access control gate device more compact. In addition, since it is configured to be connected by a belt transmission mechanism using a timing belt, the power transmission system can be simplified, the cost of power transmission system parts can be reduced, and the doors 10 and 11 can be rotated 180 °. Even in the case of the bidirectional type, it is possible to manage traffic with a pair of doors without providing two pairs of doors, and the number of parts can be reduced. Therefore, the cost of the access control gate device can be reduced. Further, since a greasing operation is unnecessary as compared with a power transmission mechanism using a cam or a link, maintenance is facilitated and noise can be reduced.

  In addition, since the rotary direction of the door shaft 30 is detected by the rotary encoder 35, the external force is removed when the doors 10 and 11 are moved by the external force such as the operation obstruction or the opening of the doors 10 and 11 being applied. In this case, the motor 24 can be driven and returned to the normal door opening / closing position according to the detection output state of the rotary encoder 35.

  It goes without saying that the access control gate device of the present invention can be applied to any gate device that needs to manage access, such as an automatic ticket gate, a gate device that manages access to places with high security, and the like.

The top view which shows one Embodiment of the access control gate apparatus of this invention Side view of the gate device body of the same embodiment Configuration diagram of door drive mechanism Configuration diagram of door open / close detection sensor The figure which shows the arrangement | positioning relationship of a rotary encoder, a door open detection sensor, and a door close detection sensor Main block diagram of door drive controller Time chart explaining door opening and closing operation

Explanation of symbols

1A, 1B Gate device body 7, 8, 9 Human detection unit 10, 11 Door 24 DC motor 25 Electromagnetic brake 30 Door shaft 31, 32, 36, 37 Pulley 33, 38 Timing belt 35 Rotary encoder 40 Door open detection sensor 41 Door Close detection sensor 50 Control device 52 Timer 53 Motor drive device

Claims (7)

In the access control gate device that controls the opening and closing of the door provided in the gate device body to manage the user's traffic,
Door position detecting means for detecting the rotational position of the door;
A motor for driving the door;
Control means for decelerating the motor so that the door speed gradually decreases from a predetermined door position set in advance before the rotation stop position to the rotation stop position based on the position detection output of the door position detection means;
An access control gate device characterized by comprising:   An electromagnetic brake that applies a braking force to the motor shaft of the motor is provided, and the control means intermittently generates a braking torque from the predetermined door position to the rotation stop position to cause the motor to function as a motor brake. 2. The access control gate device according to claim 1, wherein the gate is decelerated and the electromagnetic brake is turned on in the vicinity of the rotation stop position, and the door is stopped at the rotation stop position by the motor brake and the electromagnetic brake.   3. The structure according to claim 2, wherein the control unit is configured to turn off the motor brake and adjust a braking force of the electromagnetic brake to hold the door at a stop position after a predetermined time has elapsed since the electromagnetic brake was operated. Access control gate device.   4. The control unit according to claim 1, wherein the control unit is configured to perform acceleration control of the motor so that the door speed gradually increases from a rotation start position to another predetermined door position set in advance before the predetermined door position. The access control gate device described in 1.   5. The rotary encoder according to claim 1, wherein the door position detection means is a rotary encoder that is pivotally supported by the gate device main body and detects a rotation position of a door shaft to which the door is attached. The entry / exit management gate device described.   A configuration in which a rotary shaft of the rotary encoder is arranged in parallel with the door shaft arranged in the vertical direction on the gate device body, and the door shaft and the rotary shaft of the rotary encoder are connected by a belt transmission mechanism using a timing belt. The access control gate device according to claim 5.   The motor shaft of the motor is arranged in the vertical direction on the gate device body and parallel to the door shaft to which the door is attached, and the motor shaft and the door shaft are connected by a belt transmission mechanism using a timing belt. The access control gate device according to any one of claims 1 to 6, wherein the access control gate device is configured.

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