JP2015117659A - Power device and power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power device capable of keeping a rotation of a device rotated by a fewer outer energy.SOLUTION: This power device comprises: a rotary auxiliary body including a rotating shaft body, a plurality of rotary bodies having a rotary weight with mass for keeping its rotation, a rotating shaft of which one end is connected to the shaft body and the other end is connected to the rotary weight, extended or retracted in a radial direction of a rotating circle by a resilient body and fitted to the shaft body with fitting angles around a rotating axis being displaced to each other, and a guide part regulating a rotational track of the rotary weight to be elliptical; a rotation detecting part for detecting a rotation of the shaft body; a rotation transmitting part arranged at the shaft body; a motor driven by an outer power supply to drive the rotation transmitting part; and a control part for driving the motor when the number of revolutions of the shaft body per unit time detected on the basis of an output of the rotation detecting part becomes less than the first threshold and for stopping the motor when the number of revolutions of the shaft body per unit time becomes more than the second threshold.

Description

  Embodiments described herein relate generally to a power device and a power generation device.

  Flywheels are used to smooth and maintain the rotation of devices that use rotational energy, such as automobiles, ships, and power generators.

  A general flywheel uses a metal formed in a disk shape. Therefore, the weight of the flywheel itself becomes large. This heavy weight reduces the fuel efficiency of automobiles and ships.

  In this regard, a technique has been proposed in which a magnet is inclined and arranged on the outer periphery of the flywheel, and the magnet is fixed to the outside of the flywheel, and the rotational energy is suppressed by the repulsive force of the magnet.

  However, this technique inevitably increases the size of the flywheel and increases the weight.

  Therefore, the applicants include a shaft, an elliptical orbit provided on the outer periphery of the shaft, a weight and an elastic body, one end fixed to the shaft, and the other end rotating along the elliptical orbit, Developed a rotation assisting device with a plurality of rotation assisting members attached to the shaft.

  This rotation assist device makes the rotation smoother. However, the rotation is eventually attenuated by the friction of the internal mechanism of the rotation assist device.

JP 2007-151364 A International Publication No. 2013/031106

  The problem to be solved by the present invention is to provide a power device capable of maintaining the rotation of a device that rotates with less external energy.

  In order to solve the above problems, a rotating shaft body, a rotating weight having a mass for maintaining rotation, one end connected to the shaft body, the other end connected to the rotating weight, and the diameter of the rotating circle by the elastic body A rotating shaft that expands and contracts in the direction, and includes a plurality of rotating bodies that are attached to the shaft body 11 with the mounting angles around the rotating shaft being shifted from each other, and a guide portion that restricts the rotation trajectory of the rotating weight of the rotating body to an ellipse. A rotation assisting body, a rotation detection unit that detects rotation of the shaft body, a rotation transmission unit provided on the shaft body, a motor that is driven by an external power source or a self-power source and drives the rotation transmission unit, and an output of the rotation detection unit When the rotational speed per unit time of the shaft body detected based on the value is less than the first threshold value, the motor is driven, and when the rotational speed per unit time of the shaft body exceeds the second threshold value A control unit for stopping the motor; To provide a obtain power unit.

It is a block diagram which shows the structure of a power unit. It is a figure which shows the structure of a rotation assistance apparatus. It is a front view of a guide part. It is AA sectional view taken on the line of FIG. 2 of a guide part. It is side surface sectional drawing in the 1st example of a rotary body. FIG. 5 is a sectional view taken along line BB in FIG. 4 in the first example of the rotating body. It is side surface sectional drawing in the 2nd example of a rotary body. It is CC sectional view taken on the line in FIG. 6 in the 2nd example of a rotary body. It is a figure which shows the mode of rotation of a rotary body. It is a figure which shows the mode of rotation of a rotary body. It is a figure which shows the mode of rotation of a rotary body. It is a figure which shows the mode of rotation of a rotary body. It is a block diagram which shows the structure of a control apparatus. It is a graph which shows the relationship between the rotation speed per unit time of a shaft body, and the drive timing of a motor. It is a figure which shows the installation position to the shaft body of a reflection part. It is a figure which shows the installation position to the shaft body of a reflection part. It is a figure which shows the example which provided three reflection parts. It is a timing chart which shows the rotation angle of a shaft, and the drive timing of a motor.

  Hereinafter, one embodiment of a rotation auxiliary device and a power generator is described in detail using a drawing.

  The power unit of this embodiment includes a rotating shaft body, a rotating weight having a mass for maintaining rotation, one end connected to the shaft body, the other end connected to the rotating weight, and the radial direction of the rotating circle by the elastic body. A rotation shaft including a plurality of rotating bodies that are attached to the shaft body 11 with the mounting angles around the rotating shaft being shifted from each other, and a guide portion that restricts the rotation trajectory of the rotating weight of the rotating body to an ellipse. Auxiliary body, rotation detection unit for detecting the rotation of the shaft body, a rotation transmission unit provided on the shaft body, a motor driven by an external power source or a self-power source and driving the rotation transmission unit, and an output of the rotation detection unit The motor is driven when the rotational speed per unit time of the shaft body detected based on the motor is less than the first threshold, and the motor is driven when the rotational speed per unit time of the shaft body exceeds the second threshold. A control unit for stopping .

  FIG. 1 is a block diagram showing a configuration of a power plant 100 according to the present embodiment. As illustrated in FIG. 1, the power device 100 includes a rotation assist device 1, a rotation detection unit 102 that detects rotation of the shaft body 11 of the rotation assist device 1, and a gear 104 that is a rotation transmission unit provided in the shaft body 11. And the motor 103 driven by the external power source 106 to drive the gear 104 and the motor 103 when the rotation number per unit time of the shaft body 11 detected based on the output of the rotation detection unit 102 is less than the threshold value. And a control device 101 to be driven.

  Here, a power generator is connected to the external power source 106 as a load 105, and a so-called self-power source that inputs a part of the power generated by the power generator is also included.

  For example, an optical sensor can be used as the rotation detection unit 102. When the optical sensor is used, the rotation detection unit 102 detects the reflected light of the reflection unit 102 </ b> A provided on the shaft body 11 and outputs it to the control device 101.

  The motor 103 may be a DC motor or a stepping motor. A load 105 such as a generator is installed on the shaft body 11.

  The rotation transmission unit is a means for transmitting rotation, and a gear, a timing belt, a chain, or the like can be used.

  FIG. 2 is a diagram illustrating a configuration of the rotation assist device 1 of the present embodiment. As shown in FIG. 2, the rotation assist device 1 includes a rotating shaft body 11, a rotating weight 22 having a mass for maintaining rotation, and one end connected to the shaft body 11 and the other end connected to the rotating weight 22. The rotating body 40 includes a rotating shaft 23 that expands and contracts in the radial direction of the rotating circle by the elastic body 33, that is, the longitudinal direction, and is attached to the shaft body 11 with the mounting angles around the rotating shaft being shifted from each other. A rotation auxiliary body 20 is provided that includes a guide portion 21 that restricts the rotation trajectory of the rotary weight 22 to an ellipse.

  The rotary weight 22 is a weight having a mass sufficient to maintain the rotational force.

  The guide part 21 has an elliptical shape in a portion that restricts the rotation of the rotary weight 22, and the plurality of guide parts 21 are arranged so that the major axis directions of the ellipse coincide with each other.

  In addition, the guide part 21 is not necessarily restricted to a rail-shaped thing. Moreover, the guide part 21 may be attached by shifting the directions of the major axes of the ellipses.

  The rotating shaft 23 has an elastic body 33 that urges the rotating weight 22 in the outer peripheral direction.

  Here, the rotating shaft 23 is a support member that expands and contracts in the longitudinal direction by the elastic body 33. The elastic body 33 is not limited to a spring, and any member may be used as long as it has an elastic force. The elastic body 33 may be an air cylinder, a fluid cushion, or a resin having an elastic force.

  Although FIG. 2 shows an example in which four rotation auxiliary bodies 20 are provided, three or more rotation auxiliary bodies 20 may be provided on the shaft body 11.

  Here, providing a plurality of rotation auxiliary bodies 20 has an effect of suppressing the shaft body 11 from swinging during rotation, in addition to the effect of allowing energy to be exchanged between the rotation auxiliary bodies 20.

  For example, when only one rotation auxiliary body 20 is provided, the shaft body 11 vibrates greatly when rotating.

  On the other hand, for example, when three rotation auxiliary bodies 20 are provided and the rotary body 40 is attached to the shaft body 11 while being shifted from each other by 120 °, the shaft body 11 rotates smoothly without vibrating.

  FIG. 3 is a front view of the guide portion 21. 4 is a cross-sectional view of the guide portion 21 taken along line AA in FIG.

  As shown in FIG. 3 and FIG. 4, the guide portion 21 has an elliptical shape, and the cross section has a U shape. The guide portion 21 includes a rail 24 on the inside. The rail 24 may have a permanent magnet 29 that is magnetized on the outer side to the S pole and the inner side to the N pole. Further, the permanent magnet 29 may be an electromagnet.

  The rotating shaft 23 may be curved in the rotating direction of the rotating shaft 23 or in the counter-rotating direction.

  FIG. 5 is a side cross-sectional view of the first example of the rotating body 40. FIG. 6 is a cross-sectional view taken along line BB in FIG. 5 in the first example of the rotating body 40.

  As shown in FIGS. 5 and 6, the rotating body 40 includes a rotating weight 22, a rotating shaft 23, and an elastic body 33.

  The rotary weight 22 has a curved portion directed in the rotation direction, and includes a groove portion 26 that fits with the rail 24 and a roller 27 that contacts the rail 24.

  When the rail 24 includes a permanent magnet, the rotary weight 22 further includes a permanent magnet 28 that is magnetized to the N pole toward the outer periphery in the rotational direction and magnetized to the S pole toward the inner periphery.

  The friction between the rotating weight 22 and the rail 24 can be reduced by the repulsive force of the permanent magnet.

  The rotating shaft 23 includes an inner core 31 that connects the rotating weight 22 at one end, an outer cylinder 32 that has one end connected to the shaft body 11 and passes through the inner core 31, and a connecting portion that connects the outer cylinder 32 to the shaft body 11. 34 and an elastic body 33. That is, the rotating shaft 23 has a cylinder structure, and an elastic body 33 is provided on the outer periphery of the cylinder. The expansion / contraction direction of the rotary shaft 23 and the expansion / contraction direction of the elastic body 33 are desirably equal.

  The rotary weight 22 is attached to the inner core 31 so as to be rotatable in the rotation direction of the rotary body 40 by a pin 22A. Therefore, the rotary weight 22 has a play that rotates in the rotating direction of the rotating body 40.

  The rotary weight 22 is attached such that the center of gravity is shifted from the pin 22A in the rotation direction of the rotary body 40 or in the counter-rotation direction.

  It is advantageous from the viewpoint of manufacturing cost that the elastic body 33 is a helical spring. The elastic body 33 may be an air cylinder or a synthetic resin having an elastic force.

  When the elastic body 33 is a helical spring, the elastic body 33 is installed so as to go around the outer side of the inner core 31 and the outer cylinder 32.

  The elastic body 33 biases the inner core 31 in the direction of the rotary weight 22.

  FIG. 7 is a side cross-sectional view of the second example of the rotating body 40. FIG. 8 is a cross-sectional view taken along line CC in FIG. 7 in the second example of the rotating body 40.

  As shown in FIGS. 7 and 8, the rotating body 40 can be configured such that the inner core 31 penetrates the connecting portion 34 and the shaft body 11.

  In this case, the rotating body 40 has a spring chamber 35 that houses the end portion at an end portion that protrudes from the connecting portion 34 of the inner core 31, an elastic member 36 that biases the end portion toward the rotating weight 22, and May be provided.

  This elastic member 36 assists the expansion and contraction of the elastic body 33 and helps to maintain the rotation of the rotating body 40 for a longer time.

  Note that the outer cylinder 32 may not be provided in the rotating body 40 of the second example.

  Other configurations of the rotating body 40 of the second example are the same as other configurations of the rotating body 40 of the first example.

  9 to 12 are diagrams showing how the rotating body 40 rotates. As shown in FIG. 9, when the rotating body 40 is displaced from the elliptical long axis position to the short axis position in the direction of the arrow X1, the rotation weight 22 of the rotating weight 22 is regulated by the guide portion 21, the rotating shaft 23 is shortened, The elastic body 33 is compressed in the direction of the shaft body 11. That is, rotational energy is accumulated in the elastic body 33.

  As shown in FIG. 10, when the rotator 40 is displaced from the elliptical short axis position to the long axis position in the direction of the arrow X2, the compressed elastic body 33 expands. At this time, the energy accumulated in the elastic body 33 is released in the direction of rotating the rotary weight 22.

  As shown in FIG. 11, when the rotating body 40 is displaced from the elliptical long axis position to the short axis position in the direction of the arrow X3, the rotational energy is accumulated in the elastic body 33 as in the case of FIG.

  As shown in FIG. 12, when the rotating body 40 is displaced from the elliptical short axis position to the long axis position in the direction of the arrow X4, the compressed elastic body 33 expands. At this time, the energy accumulated in the elastic body 33 is released in the direction of rotating the rotary weight 22.

  Here, due to energy loss such as friction, the rotating body 40 is insufficient in energy to complete one rotation.

  However, since the mounting position of the other rotating body 40 on the shaft body 11 is shifted, the rotating body 40 makes one rotation using the energy accumulated in the elastic body 33 of the other rotating body 40.

  As described above, the plurality of rotating bodies 40 continue to rotate while allowing energy to pass through each other.

(First embodiment)
FIG. 13 is a block diagram illustrating a configuration of the control device 101. As illustrated in FIG. 13, the control device 101 includes a control unit 301 including a CPU that is an arithmetic device, a storage unit 302 including a storage device such as a memory and a hard disk drive, and a rotation detection unit that detects the rotation of the shaft body 11. 102 and a motor driving unit 303 that drives the motor 103.

  The storage unit 302 stores a first threshold value 302A indicating the lower limit of the rotational speed of the shaft body 11, and a second threshold value 302B indicating the upper limit of the rotational speed of the shaft body 11.

  FIG. 14 is a graph showing the relationship between the rotational speed per unit time of the shaft body 11 and the drive timing of the motor 103. A graph 401 indicates the number of rotations of the shaft body 11 per unit time. A graph 402 is a graph showing the drive timing of the motor 103.

  As shown in FIG. 14, the rotation speed per unit time of the shaft body 11 decreases with time. When the controller 301 determines that the rotational speed per unit time of the shaft body 11 is less than the first threshold value 302A, the control unit 301 turns on the motor 103.

  The motor 103 rotates at a rotation speed and torque sufficient to increase the rotation speed per unit time of the shaft body 11 to at least the second threshold value 302B or more.

  Accordingly, when the motor 103 is driven, the rotational speed per unit time of the shaft body 11 increases.

  When the control unit 301 determines that the rotational speed per unit time of the shaft body 11 is equal to or greater than the second threshold value 302B, the control unit 301 turns off the motor 103.

  Therefore, the use of external energy can be reduced as compared with the case where the motor 103 is always driven.

  As described above, the power device 100 according to the present embodiment includes the rotating shaft body 11, the rotating weight 22 having a mass for maintaining rotation, and one end connected to the shaft body 11 and the other end connected to the rotating weight 22. A plurality of rotating bodies 40 that are connected and are provided with a rotating shaft 23 that expands and contracts in the radial direction of the rotating circle by an elastic body 33, are attached to the shaft body 11 with the mounting angles around the rotating shaft being shifted from each other, and a rotating weight of the rotating body 40 A rotation assisting device 1 that includes a rotation assisting body 20 that includes a guide portion 21 that restricts the rotation trajectory of 22 to an ellipse, a rotation detection unit 102 that detects the rotation of the shaft 11 of the rotation assisting device 1, and the shaft 11. Per unit time of the shaft body 11 detected based on the output of the gear 104 that is a rotation transmission unit provided in the motor, the motor 103 that is driven by the external power source 106 and drives the gear 104, and the rotation detection unit 102 It comprises a control unit 101 for driving the motor 103 when the number of rolling is less than the threshold value.

  Therefore, there is an effect that the rotation of the rotating device can be maintained with less external energy.

(Second Embodiment)
The power plant 100 of this embodiment has the same configuration as that of the power plant 100 of the first embodiment.

  Specifically, the power device 100 of the present embodiment includes a rotating shaft body 11, a rotating weight 22 having a mass for maintaining rotation, and one end connected to the shaft body 11 and the other end connected to the rotating weight 22. The rotating body 23 includes a rotating shaft 23 that expands and contracts in the radial direction of the rotating circle by the elastic body 33, and is attached to the shaft body 11 with the mounting angles around the rotating shaft being shifted from each other, and the rotating weight 22 of the rotating body 40. A rotation assisting device 1 including a rotation assisting body 20 including a guide portion 21 that restricts the rotation trajectory to an ellipse, a reflecting portion 102A installed in accordance with a position where the rotation assisting body 20 decelerates, and a reflecting portion 102A. A rotation detection unit 102 to detect, a gear 104 that is a rotation transmission unit provided in the shaft body 11, a motor 103 that is driven by an external power source 106 to drive the gear 104, and an output of the rotation detection unit 102 Based rotation assistance member 20 which is detected comprises a control unit 101 for driving the motor 103 in accordance with the position of the deceleration.

  The configuration of the control device 101 of the second embodiment is the same as the configuration of the control device 101 of the first embodiment. That is, as shown in FIG. 13, the control device 101 includes a control unit 301 that includes a CPU that is an arithmetic device, a storage unit 302 that includes a storage device such as a memory and a hard disk drive, and a rotation detection that detects the rotation of the shaft body 11. And a motor driving unit 303 that drives the motor 103.

  However, the storage unit 302 does not need to store the first threshold value 302A and the second threshold value 302B.

  FIGS. 15 and 16 are diagrams illustrating the installation position of the reflecting portion 102 </ b> A on the shaft body 11. In FIG. 15, the rotating shaft 23 is schematically shown. FIG. 16 is a cross-sectional view of the installation portion of the reflecting portion 102 </ b> A of the shaft body 11.

  As shown in FIG. 15, the rotating shaft 23 that has started to rotate in the direction of the arrow X5 from the position A may stop at a position B before the position A when the rotational speed decreases.

  As shown in FIG. 16, the reflecting portion 102 </ b> A is provided at the position of the shaft body 11 corresponding to the portion between the rotation stop position B and the longest diameter position A of the nearest guide portion 21.

  One or more reflecting portions 102 </ b> A are provided on the shaft body 11. For example, when three or six rotation auxiliary bodies 20 are installed on the shaft body 11, three reflecting portions 102 </ b> A can be provided on the shaft body 11.

  FIG. 17 is a diagram illustrating an example in which three reflecting portions 102A are provided. As shown in FIG. 17, the reflecting portion 102 </ b> A is installed on the shaft body 11 while being shifted by an angle θ.

  The angle θ is a value obtained by dividing 360 ° by the number of rotation auxiliary bodies 20 or a divisor of the number of rotation auxiliary bodies 20.

  In the example of FIG. 7, when three or six rotation assisting bodies 20 are provided, the reflecting portion 102 </ b> A is shifted and installed by 120 ° by dividing 360 ° by 3.

  FIG. 18 is a timing chart showing the rotation angle of the shaft body 11 and the drive timing of the motor 103. As shown in FIG. 18, the control unit 301 drives the motor 103 via the motor drive unit 303 only while the rotation detection unit 102 detects the reflection unit 102A.

  Accordingly, the motor 103 is driven in accordance with the timing at which the rotation auxiliary body 20 decelerates in accordance with the reflecting portion 102A.

  As described above, the power device 100 according to the present embodiment includes the rotating shaft body 11, the rotating weight 22 having a mass for maintaining rotation, and one end connected to the shaft body 11 and the other end connected to the rotating weight 22. A plurality of rotating bodies 40 that are connected and are provided with a rotating shaft 23 that expands and contracts in the radial direction of the rotating circle by an elastic body 33, are attached to the shaft body 11 with the mounting angles around the rotating shaft being shifted from each other, and a rotating weight of the rotating body 40 A rotation assisting device 1 including a rotation assisting body 20 including a guide portion 21 that restricts the 22 rotation trajectory to an ellipse, a reflecting portion 102A installed in accordance with a position where the rotation assisting body 20 decelerates, and a reflecting portion 102A. A rotation detection unit 102 that detects rotation, a gear 104 that is a rotation transmission unit provided in the shaft body 11, a motor 103 that is driven by the external power source 106 and drives the gear 104, and a rotation detection unit 102. Comprises a control unit 101 for driving the motor 103 in accordance with the rotation assistance member 20 is decelerated timing detected based on the output.

  Therefore, there is an effect that the rotation of the rotating device can be maintained with much less external energy.

  Although several embodiments have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 Shaft body 21 Guide part 22 Rotating weight 23 Rotating shaft 33 Elastic body 101 Control apparatus 102 Rotation detection part 102A Reflection part 103 Motor

Claims (6)

A rotating shaft,
A rotating weight having a mass for maintaining rotation; and a rotating shaft having one end connected to the shaft body and the other end connected to the rotating weight and extending and contracting in a radial direction of a rotating circle by an elastic body; A rotating auxiliary body comprising: a plurality of rotating bodies that are mounted with the mounting angle around the rotation axis being shifted from each other; and a guide portion that restricts the rotational trajectory of the rotating weight of the rotating body to an ellipse;
A rotation detector for detecting rotation of the shaft body;
A rotation transmission portion provided in the shaft body;
A motor driven by an external power source or a self-power source and driving the rotation transmission unit;
The motor is driven when the number of rotations of the shaft body detected based on the output of the rotation detection unit is less than a first threshold, and the number of rotations of the shaft body per unit time is the second. A control unit that stops the motor when the threshold is exceeded,
A power unit comprising: The motor is
The power unit according to claim 1, which is a DC motor or a stepping motor. A rotating shaft,
A rotary weight having a mass for maintaining rotation; and a rotary shaft having one end connected to the shaft body and the other end connected to the rotary weight and extending and contracting in a radial direction of a rotation circle by an elastic body; A rotation auxiliary body comprising: a plurality of rotating bodies that are mounted with the mounting angle around the rotation axis being shifted from each other; and a guide portion that restricts the rotation trajectory of the rotating weight of the rotating body to an ellipse;
A rotation detector for detecting rotation of the shaft body;
A gear provided on the shaft body;
A motor driven by an external power source to drive the gear;
The motor is driven when the number of rotations of the shaft body detected based on the output of the rotation detection unit is less than a first threshold, and the number of rotations of the shaft body per unit time is the second. A control unit that stops the motor when the threshold is exceeded,
A generator provided on the shaft body;
A power generator comprising: A rotating shaft,
A rotary weight having a mass for maintaining rotation; and a rotary shaft having one end connected to the shaft body, the other end connected to the rotary weight, and extending and contracting in a radial direction of a rotation circle by an elastic body; A rotation assisting device comprising a rotation assisting body comprising: a plurality of rotating bodies that are mounted with the mounting angle around the rotation axis being shifted from each other; and a guide part that regulates the rotation trajectory of the rotating weight of the rotating body to an ellipse;
A reflection part installed in accordance with a position where the rotation auxiliary body decelerates;
A rotation detection unit for detecting the reflection unit;
A gear that is a rotation transmitting portion provided in the shaft body;
A motor driven by an external power source to drive the gear;
A control device for driving the motor in accordance with a position where the rotation auxiliary body detected based on the output of the rotation detection unit decelerates;
A power unit comprising: The motor is
The power unit according to claim 4, which is a DC motor or a stepping motor. A rotating shaft,
A rotary weight having a mass for maintaining rotation; and a rotary shaft having one end connected to the shaft body, the other end connected to the rotary weight, and extending and contracting in a radial direction of a rotation circle by an elastic body; A rotation assisting device comprising a rotation assisting body comprising: a plurality of rotating bodies that are mounted with the mounting angle around the rotation axis being shifted from each other; and a guide part that regulates the rotation trajectory of the rotating weight of the rotating body to an ellipse;
A reflection part installed in accordance with a position where the rotation auxiliary body decelerates;
A rotation detection unit for detecting the reflection unit;
A gear that is a rotation transmitting portion provided in the shaft body;
A motor driven by an external power supply or a self-power supply to drive the gear;
A control device for driving the motor in accordance with a position where the rotation auxiliary body detected based on the output of the rotation detection unit decelerates;
A generator provided on the shaft body;
A power generator comprising:

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