JP3993709B2 - Electric reel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an electric reel, and more particularly to an electric reel that is controlled to protect a motor or the like.
[0002]
[Prior art]
  The electric reel that can rotate the spool at the time of winding the thread with a motor includes a reel body, a spool rotatably supported by the reel body, a handle for manually rotating the spool, and a spool in the winding direction. And an electric motor to be driven. On the upper surface of the reel body, an operation panel provided with a display for displaying water depth and switches for performing various inputs is mounted.
[0003]
  In such an electric reel, electric hoisting can be performed at the time of collecting the device, or electric hoisting can be performed when a fish is caught. However, when the fish is caught, the load on the motor is increased. In particular, when a large fish is applied, a large current continues to flow through the motor for a long time, which may cause the motor, the motor drive circuit, the motor drive element, etc. to heat up and burn out.
[0004]
  Therefore, in the electric reel, when such a load is applied to the motor, it is desirable to perform control to detect this and protect the motor and the like.
[0005]
[Problems to be solved by the invention]
  As an electric reel that is controlled to protect a motor or the like, an electric reel having an overcurrent prevention function for reducing the power supplied to the motor when an overcurrent flows can be considered. Here, the control for reducing the power is performed under the condition that a current exceeding a certain current value flows for a predetermined time. However, once the motor switch is turned off, the control to reduce the power supplied to the motor is canceled, and when the motor is turned on again, a current exceeding a certain current value flows for a predetermined time. Until the condition is met, the overcurrent prevention function does not work.
[0006]
  Here, assuming that the overcurrent prevention mechanism is activated at the time of electric winding when a large fish is applied, the motor is pulled up (wound up) even if the motor switch is turned off / on once. The burden is still large. However, until the overcurrent prevention mechanism works again, a high current flows through the motor for a predetermined time. That is, if the motor switch is kept on, a high current flows through the motor only until the overcurrent prevention mechanism is activated, and then the power is reduced. However, each time the motor switch is repeatedly turned off / on, Until the overcurrent prevention mechanism is activated again, a high current flows to the motor, and the total time that the high current is applied to the motor becomes longer. In such a case, a high current is repeatedly applied in a state where the temperature of the motor or the like is not lowered, and there is a possibility that the motor or the motor drive circuit may be burned out.
[0007]
  In order to avoid this, separately from the overcurrent prevention mechanism, it is conceivable to monitor the temperature of the motor by monitoring the temperature of the motor or the like with a thermistor. And if it is an electric reel which protects a motor etc. by actually using current value and temperature monitoring together, it is possible to suppress burning of a motor etc.
[0008]
  However, when a thermistor is provided to monitor the temperature of a motor or the like, the cost of the electric reel increases.
[0009]
  The subject of this invention is reducing the cost regarding protection of the motor etc. in an electric reel.
[0010]
[Means for Solving the Problems]
  The electric reel according to the first aspect includes a reel body, a spool, a manual handle, an electric motor, and a control unit. The spool is rotatably supported by the reel body. The handle and the motor rotate the spool. The control unit reduces the power supplied to the motor to a predetermined value or less when a load exceeding a predetermined danger value is applied to the motor for a predetermined time, and supplies power to the motor until the device is rolled back to a predetermined water depth. Control to suppress the increase of
[0011]
  When the spool supported by the reel body is rotated by a manual handle, an electric motor, or a combination thereof, the fishing line is wound up. Let's consider when there is a big fish attack. When a fish is rolled up by a motor or by using a motor handle together, a high tension is applied to the fishing line due to the weight of the fish and the force of the fish. As a result, the burden on the motor increases, and a large amount of electric power is continuously applied to the motor.
[0012]
  However, if a large amount of power is applied to the motor for a long time, the motor or a circuit that supplies power to the motor may be heated and damaged. In order to avoid this, in the present invention, control is performed as follows.
[0013]
  In other words, when a dangerous condition occurs in which a load (electric power) exceeding a predetermined danger value has taken a predetermined time to the motor, it is determined that the motor or the like needs to be protected, and the power supplied to the motor is reduced to a predetermined value or less. This suppresses heating of the motor or the like. And while considering the fact that the load on the motor continues to be large even if the regulation of the power supplied to the motor is canceled while the fish is on, specifically until the device is unwound to a predetermined depth, Control is performed to suppress an increase in the power supplied to the motor until the winding of the fish is almost completed. Because of such control, after the electric power supplied to the motor is reduced to a predetermined value or less due to a dangerous condition, the fish is wound up mainly by a manual handle. However, when a large fish that needs to protect the motor or the like is wound up as described above, it is clear that even if the power supply is released and the motor is moved, it becomes a dangerous condition again. If the regulation of electric power is released, the motor heated during the predetermined time in the hazardous condition may cause more electric power and may cause the motor to burn out, so it is supplied to the motor until the device is rolled back to the predetermined water depth. Control is performed to suppress an increase in power.
[0014]
  By performing such control, in the present invention, it is possible to protect the motor or the like without providing a temperature monitoring mechanism for separately monitoring the temperature of the motor or the like and controlling the power supplied to the motor. Therefore, an expensive means for monitoring the necessary temperature with the temperature monitoring mechanism is unnecessary, and the motor of the electric reel can be protected at a relatively low cost.
[0015]
  The electric reel according to a second aspect of the present invention is the electric reel according to the first aspect, wherein the danger condition is a plurality of conditions based on a combination of a predetermined danger value of a plurality of loads and a plurality of predetermined times.
[0016]
  Even if a relatively small load is applied to the motor for a long time, the motor is heated to a dangerous level. On the other hand, if a large load continues to be applied to the motor even for a relatively short time, the motor Etc. are heated to dangerous levels. In view of this, the dangerous condition is composed of a plurality of conditions.
[0017]
  The electric reel according to a third aspect of the present invention is the electric reel according to the first or second aspect, wherein the predetermined water depth is a water depth at a boat stop position. The water depth at the ship stop position is in the range of 1 m to 10 m.
[0018]
  When the fish trap is rolled up to the boat stop position, the angler usually stops winding at that position. Then, by setting up a trap, the device is returned to hand. That is, the boat stop position is a position where the device returns to the hand when the anchor is raised. The boat stop position is usually in the range of 1 m to 10 m in water depth, and with an electric reel, the angler can often set it freely within this range.
[0019]
  If it winds up to such a boat stop position, it is not necessary to wind up any more and the tension applied to the fishing line is reduced. That is, in this state, it is unlikely that a large load is applied to the motor even if the restriction of suppressing an increase in the power supplied to the motor is canceled. For this reason, in the present invention, when the device is rolled up to the ship stop position, the state in which the increase in power supplied to the motor is suppressed is released.
[0020]
  The electric reel according to a fourth aspect of the present invention is the electric reel according to any one of the first to third aspects, wherein the load applied to the motor is detected by a current detecting means for detecting a current value supplied to the motor.
[0021]
  Usually, a power source of a predetermined voltage is used as the power source of the electric reel. Therefore, when detecting the load applied to the motor, a method of detecting the current value supplied to the motor is simple. In view of this, the load applied to the motor is detected by detecting the current value supplied to the motor by the current detection means.
[0022]
  The electric reel according to a fifth aspect of the present invention is the electric reel according to any one of the first to fourth aspects, wherein the control unit is supplied to the motor after the dangerous condition is reached and the electric power supplied to the motor is reduced below a predetermined value. When the state where the electric power is equal to or less than the predetermined value continues for a certain period of time and the electric power supplied to the motor is smaller than the lower threshold value (smaller than the predetermined value), the predetermined water depth Control is performed to return to a state in which the power supplied to the motor can be increased even if the device has not been unwound.
[0023]
  As described above, in the present invention, the control is performed so that the power supplied to the motor is reduced to a predetermined value or less when a dangerous condition is reached, and the increase in the power supplied to the motor is suppressed until the device is unwound to a predetermined depth. This control is made in view of the fact that when a large fish that needs to protect the motor or the like is being rolled up, it is clear that even if the control of the power supply is released and the motor is moved, it becomes a dangerous condition again. Yes.
[0024]
  However, there is no problem even if you move the motor after releasing the regulation of the supplied power before the device returns to the predetermined water depth, such as when the big fish that has been caught escapes or the fishing line breaks It is possible to become a state. In such a case, it is inconvenient for the angler to limit the amount of electric power supplied to the motor until the device is turned up to a predetermined depth (or the fishing line when the device is cut and the device is lost).
[0025]
  For this reason, here, after the electric power supplied to the motor is reduced to a predetermined value or less due to a dangerous condition, the state in which the electric power supplied to the motor is lower than the predetermined value continues for a certain time and When the electric power supplied to the motor is smaller than the lower threshold, control is performed to return to a state where the electric power supplied to the motor can be increased even if the device does not rewind to a predetermined water depth. Is going.
[0026]
  For this reason, when the above fish escapes, the fishing line tension is reduced and the power supplied to the motor is smaller than the lower limit threshold value. If it is determined that the state below the value has continued for a certain period of time, that is, it is determined that the temperature of the motor or the like has dropped to a certain level, the power supplied to the motor can be returned to a state that can be increased. become.
[0027]
  The electric reel according to a sixth aspect of the present invention is the electric reel according to any one of the first to fifth aspects, further comprising a boosting unit. The boosting means is a means for boosting the voltage of the electric power supplied to the motor. In addition, when a dangerous condition occurs, the control unit cancels the boosting by the boosting unit, and performs control to set the voltage of the power supplied to the motor to a non-boosting state.
[0028]
  Here, the spool can be rotated at a high speed by boosting the voltage above the power supply voltage by the boosting means. In addition, when a dangerous condition is reached, the power supplied to the motor is reduced to a predetermined value or less, and the boost is released to perform the control to the non-boosted state.
[0029]
[DETAILED DESCRIPTION OF THE INVENTION
  <Overall configuration>
  An electric reel employing one embodiment of the present invention shown in FIG. 1 is a seven-speed electric reel, and is mainly for reel rotation 1 and for spool rotation disposed on the side of the reel main body 1 in appearance. The handle 2 and a star drag 3 for adjusting the drag disposed on the reel body 1 side of the handle 2 are provided. A spool 10 coupled to the handle 2 is supported inside the reel body 1 so as to be rotatable with respect to the reel body 1. Inside the spool 10, a direct-current drive motor 12 that rotates the spool 10 in the yarn winding direction is disposed. An operation lever 11 of a clutch (not shown) for turning on / off driving transmission between the handle 2 and the motor 12 and the spool 10 is disposed on the front side surface of the reel body 1. This clutch can also be turned on (engaged) by a solenoid 27 (FIG. 3) arranged in the reel body 1. When this clutch is turned on, the yarn unwinding operation can be stopped during the yarn unwinding due to its own weight.
[0030]
  An operation panel 4 is integrally formed on the top of the reel body 1. As shown in detail in FIG. 2, the operation panel 4 includes a display unit 5 including a liquid crystal display for displaying the depth of a device, a shelf position based on two standards, and various kinds of devices arranged around the display unit 5. An operation unit 6 including operation keys is provided.
[0031]
  The display unit 5 includes a water depth display unit 5a for displaying different water depths according to display modes (from top to bottom mode), a mode display unit 5b for displaying various modes and operating states, A bottom memo display portion 5c for displaying the water depth S, a shelf memo display portion 5d for displaying the upper shelf position TU or the bottom shelf position TS according to the display mode, and seven shift stages for electric winding of the spool 10. A speed display unit 5e for displaying is included.
[0032]
  The water depth display part 5a, the bottom memo display part 5c, and the shelf memo display part 5d can display the water depth in three digits. The mode display unit 5b displays the display mode on the screen with one of two types of characters “from the top” and “from the bottom”. Here, the mode from the top is a mode that displays the depth of the device from the water surface based on the electric reel, and the mode from the bottom is a mode that displays the distance from the bottom to the device based on the water bottom. . For this reason, the mode from the top is suitable for fishing a fish called “top thing”, and the mode from the bottom is suitable for fishing a fish called “bottom thing”.
[0033]
  The operation unit 6 includes an acceleration / deceleration switch SK and a power button PB that are arranged vertically on the right side of the display unit 5, a saddle button IB, a shelf memo button TB, and a bottom memo button SB that are arranged vertically on the left side. Is provided. The acceleration / deceleration switch SK is a seesaw type switch composed of two switches. When the upper switch is pressed, the speed is gradually shifted to the high speed side for the time the gear is being pressed, and when the lower switch is pressed, the speed is shifted to the low speed side. When the pressing is stopped, the acceleration / deceleration switch SK returns to the neutral position, and the gear position at that time is maintained. The power button PB is a button for turning on / off the motor 12.
[0034]
  The scorpion button IB is a button that is used when setting a scorpion mode in which a mechanism is struck in the vicinity of a shelf, performing sword learning, or canceling the scorpion mode. The shelf memo button TB is a button for setting the upper shelf position in the mode from the top and the bottom shelf position in the mode from the bottom. If the shelf memo button TB is kept pressed for 3 seconds or more, the water depth display is set to 0. The bottom memo button SB is a button for setting the water depth of the bottom of the water. If the bottom memo button SB is continuously pressed for 3 seconds or more, the display mode is switched from the top mode to the bottom mode.
[0035]
  An alarm 7 (FIG. 3) for outputting various alarm sounds is provided on the lower surface side of the operation panel 4.
[0036]
  <Control system configuration>
  This electric reel has a control unit 20 as shown in FIG. The control unit 20 includes a microcomputer including a CPU, a RAM, a ROM, an I / O interface and the like disposed in the operation panel 4 and executes various control operations described later according to a control program. The control unit 20 includes various buttons (switches) of the operation unit 6, a spool rotation sensor 21 including a pair of reed switches for detecting the rotation direction and the number of rotations of the spool 10, a relay switch 22, a motor 12 is connected to a current detection sensor 23 for detecting the current value supplied to 12. The current detection sensor 23 detects the current supplied to the motor 12 by detecting the partial pressure at both ends of the FET 25 a that is a motor drive element used in the PWM drive circuit 25. In addition, when using FET with a current detection function, the current detection sensor 23 is unnecessary. The current detection sensor 23 is disposed in the operation panel 4 together with the control unit 20.
[0037]
  The control unit 20 includes a plurality of timers 8, an alarm 7, a display unit 5, a PWM drive circuit 25 using an FET 25a, a storage unit 26 including a nonvolatile memory for storing various control data, a clutch The solenoid 27 for turning on, the reading part 28, and other input / output parts are connected. The plurality of timers 8 are used when determining whether or not a dangerous condition shown in FIG. 5 to be described later is met, or the acceleration / deceleration switch SK is operated when the motor 12 is in a constant duty operation state due to the dangerous condition. Examples include those used when it is possible to release this freezing within a predetermined time after being frozen. These timers 8 operate according to a command from the control unit 20 and send information on the time to the control unit 20 at any time. Further, the motor 12 is connected to the PWM drive circuit 25.
[0038]
  As shown in FIG. 4, the storage unit 26 stores a display data storage area 30 for storing display data such as shelf positions, and learning data storage for storing learning data indicating the relationship between the actual yarn length and the spool rotational speed. Area 31, a dangerous condition table storage area 32 for storing a dangerous condition for shifting the motor 12 to a constant duty operation according to the current value and time supplied to the motor 12, and a gear stage used in the PWM drive circuit 25 Maximum duty ratio D according to_SUA duty table storage area 33 for storing the data and a data storage area 34 for storing various data.
[0039]
  The dangerous condition table storage area 32 stores a dangerous condition table including a plurality of conditions for turning off the motor 12 as shown in FIG. This includes an element of a range of current values supplied to the motor 12 and an element of time indicating how long a state matching the range continues. For example, when the current value is in the range of 7 A or more and the state continues for 60 seconds or more, which is the corresponding limit time, it is determined that the danger condition exists.
[0040]
  In the duty table storage area 33, for example, 50% for the first and second speeds on the low speed side, 70% for the third to fourth speeds, 90% for the fifth speed, and 6% which is the highest speed in the supply voltage of the external power supply 40. 100% maximum duty ratio D at 7th speed in speed and boost_SUIs remembered. In this way, the maximum duty ratio D increases as the shift speed increases._SUIs set to be large. Further, the winding speed set for each gear stage SC is also stored in this duty table storage area 33.
[0041]
  In the reading unit 28 (FIG. 3), the duty ratio D of PWM drive actually set and the maximum duty ratio D read from the duty table storage area 33 are stored._SUThe set gear stage SC, the target hoisting speed set corresponding to the gear stage SC, and the like are stored.
[0042]
  The electric reel also includes a switching unit 41 and a booster circuit 42 that are controlled by the control unit 20 (see FIG. 3). The switching unit 41 switches a route for supplying power supplied from the external power source 40 such as a battery to the PWM drive circuit 25. Specifically, the switching unit 41 sends the supply voltage of the external power supply 40 as it is to the PWM drive circuit 25 according to a command from the control unit 20 or boosts the supply voltage via the booster circuit 42 to increase the supply voltage. Switch to send to.
[0043]
  <Main control of electric reel>
  Next, main control processing performed by the control unit 20 will be described with reference to control flowcharts shown in FIGS.
[0044]
  When the external power supply 40 is connected to the electric reel, initial setting is performed in step S1 shown in FIG. Here, the water depth display is set to “0”, various flags are reset, and the display mode is set from the top to the mode. Also, the dangerous condition table shown in FIG. 5 is called from the dangerous condition table storage area 32 to the reading unit 28 here.
[0045]
  In step S2, display processing is performed. In the display process, various displays such as a water depth display are performed. Here, in the mode from the top, the water depth LN from the top is displayed on the water depth display portion 5a, and the distance from the bottom is displayed in the mode from the bottom. When the shelf position is set, the upper shelf position TU is displayed on the shelf memo display portion 5d in the mode from the top, and the bottom shelf position TS is displayed in the mode from the bottom.
[0046]
  In step S3, it is determined whether or not a key input has been made by operating various buttons of the operation unit 6. When a key input is made in step S3, the process proceeds to step S7, and the key input process shown in FIGS. 7 and 8 is performed.
[0047]
  In step S4, it is determined whether or not the spool 10 has rotated. This determination is made based on the output of the spool rotation sensor 21. If it is determined that the spool 10 is rotating, the process proceeds from step S4 to step S8, and it is determined whether or not the relay switch 22 is turned on. The relay switch 22 is turned on only when a yarn length measuring device (not shown) is mounted and the relationship between the yarn length and the rotation position of the spool 10 is learned. If the relay switch 22 is on, the process proceeds to step S9, and the process proceeds to a learning mode process for learning the relationship between the rotation of the spool 10 and the yarn length. In this learning mode process, map data MAP (N) indicating the relationship between the yarn length (water depth) LN and the rotation data N of the spool 10 is calculated and stored in the learning data storage area 31. If the relay switch 22 is not turned on, the process proceeds to step S10 to execute each mode process (FIG. 9).
[0048]
  In step S5, it is determined whether or not the motor 12 is ON. If it is determined that it is ON, the process proceeds from step S5 to step S11.
[0049]
  In the acceleration / deceleration process in step S11, the duty ratio D is increased or decreased to increase or decrease the speed of the motor 12. In this process, the current rotation speed of the spool 10 detected by the spool rotation sensor 21 is compared with the rotation speed data set in the current gear stage SC, and the duty ratio D is adjusted so as to match the two. Thus, the rotation of the motor 12 that rotates the spool 10 is increased or decreased. However, the maximum duty ratio D corresponding to the gear stage SC at that time_SUThe duty ratio D is adjusted within a range not exceeding. However, if the motor 12 is operated at a constant duty in step S81, which will be described later, and the acceleration / deceleration switch SK is frozen in step S82, the acceleration / deceleration process in step S11 is skipped. That is, when the acceleration / deceleration switch SK is in a frozen state, the acceleration / deceleration process in step S11 is not performed until the frozen state is released.
[0050]
  When the process proceeds from step S11 to step S12, a dangerous condition confirmation process shown in FIG. 10 is performed here. As shown in FIG. 10, in the dangerous condition confirmation process, first, in step S80, the electric reel detects the dangerous condition shown in FIG. 5 based on the current value detected by the current detection sensor 23 and these conditions detected by the timer 8. It is determined whether or not any of the above is true. If the dangerous condition is not met, the motor 12 and the FET 25a are assumed not to be burned out, and the process proceeds to the next step S6. If the dangerous condition is met, the motor 12 is operated at a constant duty in step S81, and the speed stage SC is set to the first speed, which is the lowest speed stage. In step S82, the acceleration / deceleration switch SK is set in a frozen state so as to prohibit the change of the gear stage SC by the acceleration / deceleration switch SK. The reason why the gear stage SC is set to the first speed in step S81 is to prevent the motor 12 from suddenly starting to rotate at a high speed when the freeze state of the acceleration / deceleration switch SK is released. Subsequently, in step S83, one of the timers 8 is used to detect the elapse of the freeze release time ta, which is the minimum time for maintaining the frozen state of the acceleration / deceleration switch SK set for cooling the motor 12 and the like. Turn on. Next, in step S84, whether or not the power supply voltage supplied to the motor 12 is boosted, that is, whether the supply voltage of the external power supply 40 is sent via the booster circuit 42 or sent to the PWM drive circuit 25 as it is. Judging. If the voltage is boosted, that is, via the booster circuit 42, the process proceeds to step S85, where the switching unit 41 is switched and supplied to the PWM drive circuit 25 without boosting the supply voltage of the external power supply 40. In this way, the boost is released.
[0051]
  In step S6, it is determined whether another command has been issued. When another command is issued, the process proceeds from step S6 to step S13, and other processing according to the command is performed.
[0052]
  In the key input process in step S7 shown in FIGS. 7 and 8, it is first determined in step S21 whether or not the power button PB has been pressed. In step S22, it is determined whether or not the upper switch of the acceleration / deceleration switch SK has been pressed. In step S23, it is determined whether or not the lower switch of the acceleration / deceleration switch SK has been pressed. In step S24, whether the shelf memo button TB is pressed, whether the bottom memo button SB is pressed, whether the bottom memo button SB is input for a long time (for example, 3 seconds or more), the bottom memo button SB and the shelf memo button It is determined whether or not another key input such as a simultaneous operation with TB or a key input of the saddle button IB has been performed.
[0053]
  When the power button PB is pressed in step S21, the process proceeds to step S25. In step S25, it is determined whether or not the motor 12 is in an ON state. If the motor 12 is already ON, the process proceeds to step S27 and the motor 12 is stopped. If the motor 12 is OFF, the process proceeds to step S26 and the motor 12 is turned ON.
[0054]
  When the upper switch of the acceleration / deceleration switch SK is pressed in step S22, the process proceeds to step S30 to determine whether or not the acceleration / deceleration switch SK is in a frozen state. If it is not in the frozen state, the process proceeds to step S35 to increase the gear stage SC. When the acceleration / deceleration switch SK is in a frozen state, the process proceeds to step S31, and whether or not the time t of the timer 8 turned on in step S83 exceeds a predetermined freeze release time ta (for example, 60 seconds). Is judged. If the time t has not yet exceeded the freeze release time ta, the process proceeds to step S23. When the time t exceeds the freeze release time ta, the process proceeds to step S32, and whether or not the current value I detected by the current detection sensor 23 is below a lower limit current threshold IL (for example, 3A). Is determined. Here, if the current value I exceeds the lower limit current threshold IL, it is determined that the risk of burning of the motor 12 or the like has not been eliminated, and the frozen state of the acceleration / deceleration switch SK is not released and the process proceeds to step S23. To do. If the current value I is lower than the lower limit current threshold value IL, the freeze state of the acceleration / deceleration switch SK is released in step S33, the timer 8 is turned off in step S34, and then the gear stage SC is changed in step S35. Let me up. The gear stage SC at this time is stored in the reading unit 28 and displayed on the speed display unit 5e. However, if the gear stage is already the highest speed, ie, the seventh speed, the gear stage is not increased, and steps S36 and S37 described later are skipped and the process proceeds to step S23 (not shown). In step S36, it is determined whether or not the shift stage SC is in the seventh speed. If it is in the seventh speed, the switching unit 41 is switched in step S37, and the booster circuit 42 boosts the supply voltage of the external power supply 40. To be supplied to the PWM drive circuit 25.
[0055]
  When the lower switch of the acceleration / deceleration switch SK is pressed in step S23, the process proceeds to step S40 to determine whether or not the acceleration / deceleration switch SK is in a frozen state. If it is not in the frozen state, the process proceeds to step S45, and the gear stage SC is lowered. When the acceleration / deceleration switch SK is in a frozen state, the process proceeds to step S41, and it is determined whether or not the time t of the timer 8 turned on in step S83 exceeds a predetermined freeze release time ta. If the time t has not yet exceeded the freeze release time ta, the process proceeds to step S24. When the time t exceeds the freeze release time ta, the process proceeds to step S42, and it is determined whether or not the current value I detected by the current detection sensor 23 is below the lower limit current threshold IL. . Here, if the current value I exceeds the lower limit current threshold IL, it is determined that the risk of burning of the motor 12 or the like has not been eliminated, and the frozen state of the acceleration / deceleration switch SK is not released and the process proceeds to step S24. To do. If the current value I is below the lower limit current threshold value IL, the freeze state of the acceleration / deceleration switch SK is released in step S43, the timer 8 is turned off in step S44, and then the gear position is lowered in step S45. Let The gear stage SC at this time is stored in the reading unit 28 and displayed on the speed display unit 5e. However, when the shift stage is already the first speed, which is the lowest speed stage, the shift stage is not lowered. In step S46, it is determined whether or not the gear stage SC is 6th speed. If it is 6th speed, the switching unit 41 is switched in step S47 and the supply voltage of the external power supply 40 is not increased. To supply.
[0056]
  If another key is input in step S24, the process proceeds to step S49, and another key input process corresponding to the pressed key is performed. For example, when the shelf memo button TB is pressed, the water depth LN at this time is stored in the display data storage area 30 as the upper shelf position TU, and the value obtained by subtracting the water depth LN at that time from the water depth S at the bottom is the bottom shelf position SU. Is stored in the display data storage area 30. When the bottom memo button SB is pressed, the water depth LN at this time is stored in the display data storage area 30 as the water depth S of the water bottom. When the bottom memo button SB is pressed for 3 seconds or more, the display mode is switched from the top and from the bottom, and when the rewind button IB is pressed, the operation mode is switched to the replay mode.
[0057]
  In each mode process shown in FIG. 9, first, in step S50, it is determined whether or not the rotation of the spool 10 is a rotation in the yarn feeding direction. This determination is made based on which reed switch of the spool rotation sensor 21 is turned on first. If it is determined that the rotation direction of the spool 10 is the yarn feeding direction, the process proceeds to step S51. In step S51, the rotation data N is increased. In step S52, the water depth LN is obtained from the increased rotation data N using the map data MAP (N). Thereby, the water depth display is updated by the display process. In step S53, it is determined whether or not the calculated water depth LN matches the upper shelf position TU. In step S54, it is determined whether the mode is another mode. If it is not in another mode, each mode process is terminated and the process returns to the main routine.
[0058]
  When the water depth LN matches the upper shelf position TU, the process proceeds from step S53 to step S55. In step S55, a shelf alarm is output from the alarm 7. In step S56, the solenoid 27 is turned on to turn on the clutch.
[0059]
  On the other hand, when it is determined in step S50 that the rotation direction of the spool 10 is the yarn winding direction, the process proceeds to step S60. In step S60, the rotation data N is decreased. In step S61, the water depth LN is obtained from the increased rotation data N using map data MAP (N). Thereby, the water depth display is updated by the display process.
[0060]
  In step S62, it is determined whether or not a subtraction value obtained by subtracting the calculated water depth LN from the water depth S of the water bottom matches the bottom shelf position TS. When the subtraction value matches the bottom shelf position TS in step S62, the process proceeds to step S65. In step S65, a shelf alarm is output from the alarm 7. In step S66, the motor 12 is turned off.
[0061]
  In step S63, it is determined whether or not the calculated water depth LN is equal to or less than a subtraction value obtained by subtracting a predetermined length SL from the ship stop position FB. The ship stop position FB is a position set so that the device returns to the hand, and can be freely set in the range of 1 m or more and less than 6 m with this electric reel. The ship stop position FB is set to 6 m when the power is turned on. The predetermined length SL is a length appropriately set so as to easily stop the motor 12 at the ship stop position FB, and is 2 m here. If the water depth LN is equal to or smaller than the subtraction value obtained by subtracting the predetermined length SL from the ship stop position FB in step S63, it is determined in step S67 whether or not the voltage of the electric power supplied to the motor 12 is boosted. . When it is determined in step S67 that the pressure is increased, the switching unit 41 is switched and the pressure is released. When the boost is released, the gear stage SC is changed from the 7th speed to the 6th speed, and the maximum duty ratio D corresponding to the 6th speed._SUIs read from the duty table storage area 33 to the reading unit 28.
[0062]
  In step S64, it is determined whether or not the calculated water depth LN matches the boat stop position FB. When the water depth LN coincides with the ship stop position FB, the process proceeds to step S69. In step S69, a shipboard alarm is output from the alarm 7. In step S70, it is determined whether or not the motor 12 is turned on. If it is turned on, the motor 12 is turned off in step S72. In step S71, it is determined whether or not the acceleration / deceleration switch SK is frozen. If it is frozen, the frozen state of the acceleration / deceleration switch SK is canceled in step S73, and the timer 8 turned on in step S83 is also displayed. It is turned off.
[0063]
  <Characteristics of electric reel>
  In this electric reel, when a dangerous condition is reached, the motor 12 is shifted to a constant duty operation to reduce the power supplied to the motor 12. This suppresses overheating of the motor 12, the FET 25a, and the like. While the fish is so large as to be in a dangerous condition, the boat stop position is taken into consideration that even if the duty ratio D is increased by operating the acceleration / deceleration switch SK, the load on the motor 12 continues to be large. Until the fish is picked up, control is performed so as to continue the constant duty operation of the motor 12.
[0064]
  For this reason, if it becomes a dangerous condition, the motor 12 will be operated at a constant duty and the electric hoist will hardly function, so the angler will mainly wind up the fish with a manual handle. However, it is clear that when a fish that is large enough to be in a dangerous condition is rolled up, it becomes obvious that the duty condition D must be set low again. If the dangerous condition is repeated, a large current is applied to the overheated motor 12 or the like. However, unless the fish is picked up to the boat stop position, control is performed to keep the acceleration / deceleration switch SK kept frozen (steps S64, S71, S73). reference).
[0065]
  By performing such control, the electric reel can protect the motor 12 and the like at a relatively low cost without providing an expensive temperature detection means such as a thermistor for monitoring the temperature of the motor 12 and the like. It is done effectively.
[0066]
  On the other hand, there is no risk of burning the motor 12 or the FET 25a before the device (fishing line) returns to the boat stop position FB, such as when a large fish that has been caught escapes or the fishing line breaks. In consideration, after the motor 12 is shifted to a constant duty operation due to a dangerous condition, if the freeze release time ta has elapsed and the current value I is below the lower limit current threshold value IL, acceleration / deceleration is performed. It is possible to release the frozen state of the switch SK and increase the duty ratio D (see steps S31 and S32 and steps S41 and S42). In this case, the constant duty operation of the motor 12 is canceled and the motor 12 can be used at a high speed even if it is not wound up to the ship stop position FB.
[0067]
  [Other Embodiments]
  (A) Instead of the configuration in which the motor is controlled by the current value, the motor may be controlled by voltage. For example, a DC-DC converter using an FET may be disposed between the motor and the control unit, and a voltage corresponding to the load may be supplied from the DC-DC converter to the motor.
[0068]
  (B) The motor is not limited to a DC motor, and an AC motor or a stepping motor can also be used.
[0069]
  (C) In the above embodiment, the LCD of the display unit may be flushed while the acceleration / deceleration switch SK is frozen. By this flushing, the angler can recognize that the operation of the acceleration / deceleration switch SK is not accepted until a predetermined condition is satisfied.
[0070]
【The invention's effect】
  In the present invention, the temperature monitoring for controlling the power supplied to the motor by separately controlling the temperature of the motor or the like by performing control to suppress the increase in the power supplied to the motor until the device is rolled back to a predetermined depth. A motor or the like can be protected without providing a mechanism. Therefore, an expensive means for monitoring the necessary temperature with the temperature monitoring mechanism is unnecessary, and the motor of the electric reel can be protected at a relatively low cost.
[Brief description of the drawings]
FIG. 1 is a plan view of an electric reel in which an embodiment of the present invention is adopted.
FIG. 2 is an enlarged plan view of an operation panel.
FIG. 3 is a control block diagram of a reel.
FIG. 4 is a schematic diagram showing an area configuration of a storage unit.
FIG. 5 is a danger condition table.
FIG. 6 is a flowchart showing processing contents of a main routine.
FIG. 7 is a flowchart showing the contents of key input processing (first half).
FIG. 8 is a flowchart (second half) showing the contents of key input processing.
FIG. 9 is a flowchart showing the contents of each mode process.
FIG. 10 is a flowchart showing details of dangerous condition confirmation processing;
[Explanation of symbols]
    1 Reel body
    2 Handle
  10 spools
  12 Motor
  20 Control unit
  23 Current detection sensor (current detection means)
  24 Temperature sensor (temperature detection means)
  42 Booster circuit (Boosting means)
  FB Ship stop position
  I Current value
  IL lower limit current threshold (lower limit threshold)
  Ta Freezing release time (predetermined time)

Claims (6)

The reel body,
A spool rotatably supported by the reel body;
A manual handle for rotating the spool;
An electric motor for rotating the spool;
When a dangerous condition that a load greater than or equal to a predetermined dangerous value has been applied to the motor for a predetermined period of time, the electric power supplied to the motor is reduced to a predetermined value or less and the electric power supplied to the motor until the device is rolled back to a predetermined water depth. A control unit that performs control to suppress an increase in
Electric reel equipped with.   The electric reel according to claim 1, wherein the dangerous condition is a plurality of conditions based on a combination of a predetermined dangerous value of the plurality of loads and a plurality of the predetermined times.   The electric reel according to claim 1 or 2, wherein the predetermined water depth is a water depth at a boat stop position in a range of 1 m to 10 m in water depth.   The electric reel according to any one of claims 1 to 3, wherein a load applied to the motor is detected by a current detection unit that detects a current value supplied to the motor.   The control unit has been in a state where the power supplied to the motor is less than or equal to the predetermined value for a certain period of time after the dangerous condition is met and the power supplied to the motor is reduced to or less than the predetermined value. When the electric power supplied to the motor is smaller than the lower threshold value smaller than the predetermined value, the electric power supplied to the motor is increased even if the device does not rewind to the predetermined water depth. The electric reel according to any one of claims 1 to 4, wherein control is performed to return the state to a state where it is possible. Further comprising boosting means for boosting the voltage of the power supplied to the motor;
The control unit performs control to cancel the boosting by the boosting unit and to set the voltage of power supplied to the motor in a non-boosting state when the dangerous condition is reached.
The electric reel according to any one of claims 1 to 5 .

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