JP2020000040A - Winding device - Google Patents

Abstract

To provide a winding device capable of achieving continuous (stepless) low speed high torque drive and high speed low torque drive without a mechanical speed change mechanism.SOLUTION: A fishing electrical reel as one example of a winding device comprises a drive motor which drives the spool to rotate, the drive motor rotates a motor output shaft 71 for rotating the spool, by rotating a rotor 75 by force transmitted from a magnetic field which is generated by magnetic materials (73A, 73B) forming a magnetic field by electrification of a coil 75B wound to the rotor 75. The drive motor comprises: magnetic field system control coils 120A, 120B which are wound to magnetic materials (73A, 73B) and to which a control current for controlling intensity of the magnetic field generated by magnetic field system is electrified.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a hoisting device for raising and lowering an object by electrically winding (winding up) and / or unwinding (extending out) a traction member.

  BACKGROUND ART Hoisting devices that use a driving force of a motor to hoist or unload an object such as bedding, packing, a temporary scaffold, a building, a fishing implement to a predetermined position, and the like, have conventionally been generally known (for example, Patent Document 1).

  Also, in the field of fishing, electric fishing reels are used as hoisting devices. Such an electric fishing reel includes a motor for winding and driving a spool on which a fishing line is wound as a pulling member (rotating the spool in a fishing line winding direction to wind the fishing line), and And a transmission for changing the winding drive conditions. Such a transmission is generally an electric transmission that performs low-speed and high-speed control by changing a voltage applied to a motor serving as a power source of an electric reel, and a DC brush motor may be used as the motor. is there.

  In a DC brush motor, when a coil (rotor coil) wound around a rotor (core) is energized, the rotor rotates with a force received from a magnetic field (magnetic field) formed by a permanent magnet or a magnetic material (field) such as a rare earth element ( When the rotor core is switched between the S pole and the N pole, the rotor core reciprocates and attracts the field magnet to rotate, but the motor characteristic is such that the supply voltage V (voltage V applied to the rotor coil) is constant. As shown in FIG. 5, it can be represented by two characteristic lines, that is, a TN (torque-rotational speed) characteristic line L1 and a TI (torque-current) characteristic line L2. Specifically, as shown in the drawing, when the torque (shaft torque) T applied to the output shaft of the motor increases, the rotation speed N decreases and the current I increases, while when the shaft torque T decreases, the rotation speed N decreases. The current rises and rises. When the supply voltage V is changed, the characteristic lines L1 and L2 move in parallel. For example, when the supply voltage V is reduced (−ΔV), for example, the TN characteristic line L1 moves in parallel to the TN characteristic line L1 ′.

  Further, in order to complement the basic characteristics (TN characteristics and TI characteristics) of the motor and characteristic changes due to the use environment temperature, etc., and to enable a wide range of speed change operations, a mechanical mechanism is provided between the power transmission path between the motor and the spool. It is known from Patent Documents 1 and 2 to provide a type transmission.

  Specifically, in Patent Literature 1, a mechanical transmission including a planetary gear is provided in a driving force transmission unit that transmits an output from a motor to a spool, and a light-load high-speed winding is performed by a speed change switching unit mounted on a reel body. The mode can be switched to any one of a mode area and a high load low speed winding state.

  On the other hand, Patent Document 2 discloses that a high-speed reduction gear mechanism and a low-speed reduction gear mechanism having different gear ratios are connected so that power can be transmitted between an output portion of a motor and a power transmission mechanism that transmits an output from the motor to a spool. According to the rotation direction of the output portion of the motor, one of the high-speed reduction gear mechanism and the low-speed reduction gear mechanism can selectively transmit power.

Patent No. 3159637 Patent No. 3537363

As described above, in the mechanical transmission, it is possible to perform low-speed and high-torque driving that realizes high torque at low-speed rotation and high-speed and low-torque driving that realizes low torque at high-speed rotation. In order to reduce the electric hoisting speed (the winding speed of the spool) only with the electric transmission using, the rotational speed N of the motor must be reduced, and the supply voltage V is reduced according to the characteristic diagram of FIG. (Specifically, by lowering the average voltage per unit time by PWM control or the like) When the motor rotation speed N is reduced by shifting the TN characteristic line L1 to the TN characteristic line L1 ', the maximum output torque Decreases from _Tmax to _Tmax '(high torque cannot be realized at low speed rotation, and vice versa).

  Therefore, at present, in order to realize low-speed high-torque driving and high-speed low-torque driving, it is necessary to rely on a mechanical transmission device as disclosed in Patent Document 1 or Patent Document 2. The transmission has the following disadvantages. That is, since the mechanical transmissions of Patent Document 1 and Patent Document 2 are all limited to the step-by-step shifting of the determined gear ratio, detailed correspondence corresponding to the fish type (for example, a large fish is slowly and with a high torque) Cannot be performed).

  Further, in Patent Document 1 and Patent Document 2, a plurality of gear groups, bearings, support portions, and the like are provided in a power transmission path between a motor and a spool. The holding of the reel body including the rod action with the fishing rod and the operability of fishing are degraded, and the noise at the time of driving the motor remains as a potential problem.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problem, and is capable of performing continuous (stepless) low-speed high-torque drive and high-speed low-torque drive without a mechanical transmission mechanism. It is intended to provide a device.

In order to achieve the above object, the present invention includes a spool rotatably supported between left and right side plates of an apparatus main body, and a drive motor provided on the apparatus main body to rotationally drive the spool. The motor rotates the motor output shaft by rotating the rotor with a force received from a magnetic field formed by a magnetic material forming a field when a coil wound around the rotor is energized, thereby rotating the spool. In the hoisting device for rotating, the drive motor is wound around the magnetic body constituting the field and is supplied with a control current for controlling the strength of a magnetic field generated by the field. A field control coil to be used.

  According to the winding device having the above configuration, the strength of the magnetic field generated by the field is controlled by applying a control current to the field control coil wound around the magnetic material constituting the field. The strength of the field magnetic field can be adjusted by controlling the value of the current supplied to the coil.) By increasing the strength of the field magnetic field by the control current, the T- The inclination of the N characteristic line L1 can be made small like the TN characteristic line L1a shown in FIG. 3, whereby low-speed and high-torque driving can be realized. By reducing the strength, the inclination of the TN characteristic line L1 specific to the motor shown in FIG. 5 can be increased as shown by the TN characteristic line L1b shown in FIG. It is possible to realize a torque drive.

  As described above, in the present invention, by controlling the strength of the field magnetic field, which has not been conventionally performed in the above-described electric reel, the performance desired by the user such as high torque at low speed and low torque at high speed is mechanically achieved. The structure can be realized compactly and inexpensively without a transmission mechanism. In addition, since the control current can be controlled steplessly electrically, rather than mechanically with a speed reduction mechanism, the low-speed high-torque drive and high-speed low-torque drive can be smoothly and continuously controlled (steplessly). Therefore, an ideal speed-torque balance can be realized over the entire hoisting speed of the electric reel, particularly in the fishing field.

  According to such a configuration, the mode switching such as high torque during low-speed rotation and low torque during high-speed rotation can be performed electrically without passing through a transmission gear system. Even if the reduction gear ratio of the reduction gear built in the motor is increased, it is possible to suppress heat generation and back electromotive force by increasing the energization time rate to the motor.

  In the above configuration, the drive motor may be a brush type DC separately excited motor, and may be installed inside the spool or outside the spool. Examples of the magnetic material constituting the field include, for example, permanent magnets in addition to rare earth magnetic materials.

  Further, the above configuration further includes a control unit that generates a control current to be supplied to the field control coil, and the control unit increases or decreases the current value of the control current and / or changes the direction in which the control current is supplied, thereby reducing the control current. It is preferable to be able to switch between a low-speed high-torque mode in which a high torque is obtained at a motor rotation speed and a high-speed low-torque mode in which a low torque is obtained at a high motor rotation speed.

  In this case, specifically, if the field is a magnetic material having no magnetic force and to be magnetized, such as a rare earth element, the strength of the field magnetic field can be adjusted only by increasing or decreasing the control current. That is, when the control current value is increased, the field magnetic field becomes stronger and the rotation speed of the motor decreases, but the motor becomes a high-torque motor (as shown in FIG. 3, the inclination of the TN characteristic line changes from L1 to L1a). For example, it is possible to drive the electric reel with a high torque at a low speed as a motor-driven reel (the fishing line winding speed by the spool decreases, but the fishing line winding force increases). This is, in a sense, similar to the state when a low gear is selected in an automobile, and is an ideal speed-torque balance state when interacting with large fish, especially in the fishing field. On the other hand, when the control current value is decreased, the field magnetic field is weakened and the rotation speed of the motor is increased. However, the motor becomes a high-speed rotation and cannot generate a large torque. Although it becomes weaker, the winding speed of the traction member becomes faster), but in the fishing field in particular, a necessary and sufficient performance can be obtained in a mode of using an electric reel mainly for collecting and tackling.

  On the other hand, if the field is a permanent magnet having a magnetic force from the beginning, it is possible to wind up with the basic performance of the field magnet without energizing the field control coil. In this case, particularly in the fishing field, if the speed reduction ratio as a reel is set mainly assuming the speed and torque necessary for the interaction with the target fish, the target fish can be efficiently wound. . However, the performance can be enhanced by energizing the field control coil. In this case, if the control current value applied to the field control coil is increased, more powerful winding can be performed. On the other hand, if the control current is set to flow in the opposite direction (flow in the direction to weaken (cancel) the magnitude of the field magnetic field) by using an H-bridge circuit (by changing the direction of application of the control current), the field The magnetic field is weakened, and the winding can be performed at a higher speed although the torque is not high.

  The mode switching between the low-speed high-torque mode and the high-speed low-torque mode may be performed by a mode input unit separate from the motor output adjustment unit for adjusting the output of the drive motor. If the control current can be increased or decreased (inverted) inside the control circuit in accordance with the output adjustment, the motor output adjustment unit itself can enable automatic mode switching without separately providing a mode input unit. In this case, ideally, it is desirable to control the energization of the current to the coil of the rotor at a high duty ratio and control the strength of the field magnetic field with the control current.

  ADVANTAGE OF THE INVENTION According to this invention, the hoisting device which can perform low-speed high-torque drive and high-speed low-torque drive continuously (steplessly) without a mechanical transmission mechanism is obtained.

FIG. 1 is a schematic front view of an entire electric fishing reel (winding device) according to an embodiment of the present invention partially including a cross section of a main part. It is a schematic block diagram of the drive motor of the fishing electric reel of FIG. FIG. 3 is a motor characteristic diagram (TN characteristics, TI characteristics) of the drive motor of FIG. 2. FIG. 2 is a schematic block diagram related to drive motor control of the electric fishing reel of FIG. 1. It is a motor characteristic figure (TN characteristic, TI characteristic) of the conventional DC brush motor.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, an electric reel for fishing will be described as an example of a hoisting device. However, the present invention is not limited to the electric reel for fishing, but also the traction member is electrically wound up and / or lowered (extended). It is applied to all hoisting devices for raising and lowering an object.
As shown in FIG. 1, the electric fishing reel 1 of the present embodiment includes a frame 3 on which a driving force transmission mechanism described later is mounted and an outer plate 4 disposed to cover the frame 3. It has a reel body 5 as an apparatus body provided.

  In the present embodiment, the frame 3 constituting the reel body 5 has a left frame 3a, a right frame 3b, and a front frame 3c disposed on the front side of the spool, and these frames 3a, 3b, 3c is integrated as a whole. Of course, these frames 3a, 3b, 3c may be formed by integrally forming individual members and integrated by fixing means or the like, or may be formed integrally and partially integrated, and as a whole, The structure is not limited to a specific shape.

  The outer plate 4 constituting the reel body 5 includes a left outer plate 4a covering the left frame 3a, a right outer plate 4b covering the right frame 3b, and a front outer plate 4c covering the front frame 3c, and transmits driving force. It is a part that covers the components such as the mechanism and is gripped and held by the angler's hand (the part that the angler's hand contacts). These outer plates 4a, 4b, 4c are individually formed integrally and are integrated as a whole, but each of the outer plates 4a, 4b, 4c may be formed integrally as in the frame described above. , May be partly integrally formed and integrated as a whole. Further, the frame may be partially exposed.

  On one side plate (right side plate 4b) constituting the reel body 5, a manual handle 6 which is operated to be wound is provided, and left and right frames 3a, 3b (left and right side plates 4a, 4b) constituting the reel body 5 are provided. A spool 7 around which the fishing line is wound is rotatably supported between the parentheses. A drive motor 70 configured as described below is installed on the front side of the spool 7. The spool 7 is driven by a winding force of the manual handle 6 and a driving force of the drive motor 70 to be described later. It is rotationally driven in the fishing line winding direction via the transmission mechanism.

  The spool 7 has a fishing line winding body 7a around which the fishing line is wound, and has flanges 7b and 7c formed at both ends thereof for regulating the fishing line to be wound. The spool 7 is fixed to the spool shaft 7s, and both ends of the spool shaft 7s are supported by the respective frames 3a, 3b via bearings 9 so that the spool 7 can rotate between the left and right frames 3a, 3b. Supported. Further, a pin-shaped locking portion protruding radially outward is provided at an end on the right side of the spool shaft 7s so that an engaging recess 51a of a clutch operating member 51 of a clutch mechanism described later is disengaged. 7h are formed. In this case, the engaging portion 7h may be provided with a function as a power transmitting portion so that the clutch operating member 51 and the spool 7 rotate integrally. It is composed of parts.

  The rotational drive force from the manual handle 6 and the drive motor 70 is input to the spool 7 via the drive force transmission mechanism 10. In this case, the driving force transmission mechanism 10 includes a speed reduction mechanism 20 that reduces the rotational driving of the driving motor 70, and a clutch mechanism 50 that switches power transmission in the driving force transmission mechanism 10 between a power transmission state and a power cutoff state. It has a configuration.

  The drive force transmission mechanism 10 of the present embodiment is collectively installed on the right frame 3b side of the reel body 5 on which the manual handle 6 is mounted, and includes a handle shaft 6a that rotatably supports the manual handle 6 and a handle shaft 6a. A drive gear 11 mounted on the handle shaft 6a, a connection gear 13 meshed with the drive gear 11 and connected to the speed reduction mechanism 20, a first rotating body 15 meshed with the speed reduction mechanism 20, and a rotational driving force applied to the spool. And a belt 17 (preferably a toothed belt) wound between the rotating bodies 15 and 16.

  A well-known drag mechanism 90 is disposed between the handle shaft 6a and the drive gear 11, and the rotation of the drag knob 90a provided on the handle shaft 6a makes it possible to rotate the spool 7 in a desired manner. Is applied.

  The speed reduction mechanism 20 of the present embodiment is configured by two planetary gear mechanisms provided side by side, and is configured to reduce the rotational driving force of the drive motor 70 by the planetary gears. Specifically, the two planetary gear mechanisms include a first sun gear 21 and a second sun gear 22 arranged side by side on an output shaft (drive shaft) 71 of a drive motor 70, and a first planetary gear 24 and a And a second planetary gear 25. In this case, the first sun gear 21 is fixed to the output shaft 71, and the second sun gear 22 is freely rotatable. Each of the planetary gears 24 and 25 meshes with internal teeth formed on the first rotating body 15 rotatably supported by the right frame 3b, and the first carrier that supports the first planetary gear 24 is the second carrier. The second carrier that is connected and fixed to the sun gear 22 and supports the second planetary gear 25 is integrated with the support shaft 18 that protrudes toward the right outer plate, and is connected and fixed to the connection gear 13.

  The handle shaft 6a is provided with a reverse rotation prevention mechanism 6b constituted by a one-way clutch. When the drive motor 70 is rotationally driven, the manual rotation of the manual handle 6 is prevented. The reverse rotation preventing mechanism 6b of the present embodiment is configured as a rolling type one-way clutch between the handle shaft 6a and the right outer plate via a collar, but may be configured as a ratchet type. A one-way clutch 74 is provided on a protruding portion of the output shaft 71 of the drive motor 70 on the left side of the plate so as not to run idle when the manual handle 6 is wound and to transmit power to the spool 7. Is installed.

  The rotational driving force of the first rotating body 15 meshing with the speed reduction mechanism 20 is transmitted coaxially with the spool 7 and transmitted to the second rotating body 16 rotatably supported by the right frame 3b as a reel body. The transmission of the rotational driving force between the two is performed via a power transmission belt 17. That is, the outer peripheral surfaces of the first rotating body 15 and the second rotating body 16 are respectively formed with irregularities into which teeth (recesses) continuously formed inside the belt 17 are fitted, and the belt 17 is wound around these portions. By doing so, it is configured to transmit power.

  The second rotary body 16 in the present embodiment has a circular recess 16a formed on the spool side, and a bearing 16A installed between the inner surface of the peripheral wall and the cylindrical portion 3g protruding from the right frame 3b. Thus, it is rotatably supported by the right frame 3b. The engaging portion 51a of the clutch actuating member 51 of the clutch mechanism 50 is arranged so as to overlap with the radially inner side of the bearing 16A serving as the supporting portion of the second rotating body 16.

  This makes it possible to shorten the axial direction of the spool having the clutch engaging portion, and to reduce the size and size of the reel body 5. It is sufficient that at least a part of the above-described engaging portion 51a overlaps the bearing 16A. That is, a configuration in which a recess is formed in the second rotating body 16 and at least a part of the engaging portion 51a is located in this portion may be employed.

  In the present embodiment, a support case (set plate) 80 attached to the right frame 3b is provided between the right frame 3b and the right outer plate 4b. The driving force transmission mechanism 10 is housed inside the support case 80, and preferably houses the speed reduction mechanism (planetary gear mechanism) 20 and the first rotating body 15 which are members having a large driving sound. The second rotating body 16 and the belt 17 are accommodated. For this reason, the first rotating body 15 is rotatably supported in the accommodation space between the support case 80 and the right frame 3b via the bearings 15A and 15B, respectively.

  The clutch mechanism 50 has a known configuration, and the return from the clutch OFF state (power transmission cutoff state) to the clutch ON state (power transmission state) is performed by winding or operating the manual handle 6 by a known return mechanism. This is performed by a moving operation of the lever 58 or the like.

  As for the power transmission path of the driving force by the manual handle 6 and the drive motor 70 by the power transmission mechanism 10, when the manual handle 6 is wound, the rotational driving force is changed to the driving gear 11, the connecting gear 13, and the support shaft 18. The signal is input to the reduction mechanism 20 which is a planetary gear mechanism via the (second carrier). The rotational driving force input to the speed reduction mechanism 20 is rotated by the second sun gear 22, the first carrier, and the one-way clutch 74 while revolving around the first sun gear 21 in a fixed state. The power is transmitted to the first rotating body 15 via the planetary gears 24 in a decelerated state.

  The direction of rotation of the first rotator 15 is counterclockwise as viewed from the handle, and the second rotator 16 is similarly rotated counterclockwise via the belt 17. As a result, the spool 7 is driven to rotate in the fishing line winding direction via the clutch operating member 51 stopped by the second rotating body 16.

  On the other hand, when the drive motor 70 is rotationally driven, the first sun gear 21 fixed to the output shaft 71 is rotationally driven clockwise, and the first carrier is rotationally driven clockwise by this rotational driving force. . At this time, the second sun gear 22 is also driven to rotate clockwise, and accordingly, the second carrier also tries to rotate clockwise, but the second carrier is driven by the driving gear via the connecting gear 13. 11 cannot rotate in the clockwise direction by the reverse rotation prevention mechanism 6b, and as a result, the second planetary gear 25 rotates in the counterclockwise direction. Thus, the first rotating body 15 is driven to rotate counterclockwise in a state where the first rotating body 15 is decelerated by the rotation of each second planetary gear 25.

  The rotation of the first rotating body 15 in the counterclockwise direction rotates the second rotating body 16 in the counterclockwise direction via the belt 17 in the same manner as in the case of the manual handle 6 described above. It is rotationally driven in the fishing line winding direction via a clutch operating member 51 which is stopped by the two rotating bodies 16.

Next, the configuration of the drive motor 70 will be described in detail.
The drive motor 70 according to the present embodiment is a brush type DC separately excited motor, and the rotor is driven by a force received from a magnetic field formed by a magnetic material constituting a field when a coil wound around the rotor is energized. By being rotated, the motor output shaft 71 is rotated to rotate the spool 7. Specifically, a recess is formed in a member constituting the reel body 5, a magnetic body (magnet) constituting a field is detachably disposed on the inner surface of the recess, and a rotor (armature) is provided inside the recess. ) Is detachably arranged. That is, the recess formed in the reel body 5 has a function as a casing in which a magnetic material (magnet) serving as a constituent member of the drive motor 70 is provided, and the drive motor 70 is integrated into the reel body 5. It has a configuration.

  More specifically, a recess 72 that defines a cylindrical space is formed in the front frame 3c (reel body portion located on the front side of the spool 7) constituting the reel body 5, and an inner surface 72a thereof is formed on the inner surface 72a. A magnetic material (a magnetic material such as a rare earth element or a permanent magnet) 73 constituting the field is disposed along the circumferential direction. In this case, the magnetic body 73 may be detachably attached to the inner surface 72a, and may be locked by, for example, holding means. Further, the magnetic bodies 73 may be arranged at predetermined intervals along the circumferential direction, and in the present embodiment, as shown in FIG. 2, a pair of arc-shaped magnetic bodies 73A, 73B is provided. The magnetic poles are arranged to face each other in the radial direction (in the figure, the magnetic poles facing each other are magnetized to the N pole and the S pole, respectively). As for the magnetic body 73 (73A, 73B), a cylindrical yoke 73a for forming a magnetic circuit to prevent leakage of magnetic force is attached to the outside of the magnetic body 73 (73A, 73B). Such a function as a yoke may be provided.

  In the present embodiment, notch grooves (recesses) 73Aa, 73Ab (73Ba, 73Bb) are provided at both outermost peripheral edges of each magnetic body 73A (73B), and these notch grooves 73Aa, 73Ab are provided. Each of (73Ba, 73Bb) is wound around a field control coil 120A (120B) through which a control current for controlling the strength of the magnetic field generated by the field (magnetic body 73) is applied. In this case, the field control coil 120A (120B) is formed along the cutout grooves 73Aa, 73Ab (73Ba, 73Bb) with a predetermined number of turns in the axial direction and the radial direction of the magnetic body 73A (73B) (therefore, the axis of the drive motor 70). The magnetic body 73A (73B) surrounds the magnetic body 73A (73B) while extending in the directions (radial and radial directions). In FIG. 2, the winding directions of the field control coil 120A (120B) and the rotor coil 75B, which will be described later, are indicated by "●" and "X", but are not limited to this winding direction.

  In the front frame 3c in which the recess 72 is formed, the left side plate 4a side is opened as it is, and the side wall on the right side plate 4b side (the side wall located in a direction orthogonal to the output shaft 71) forms a bearing support portion 3A. The output shaft 71 is rotatably supported at the opening of the bearing support 3A via the bearing 100. A rotor (armature) 75, which is a component of the drive motor 70, is integrally rotatably mounted on the output shaft 71 so as to face a magnetic body 73 attached to the inner surface 72 a of the recess 72. A commutator 77 for supplying a current to the rotor 75 is mounted on the left side plate 4 a side of the shaft 75 in the axial direction.

  The rotor 75 has a core 75A and a plurality of coils 75B wound around the core 75, as clearly shown in FIG. The commutator 77 protrudes from an opening on the left side of the front frame 3c (the opening of the recess 72), and a cover body is formed in this opening so as to be detachable from the front frame 3c by a fixing screw. Is attached. The end cover 88 can be configured as a single unit in advance, and a brush 81 for flowing an electric current in contact with the commutator 77 and a brush holder 82 for holding the brush 81 are incorporated on the radial inner side. And is fixed to the front frame 3c. A terminal 83 is integrally incorporated in the brush holder 82, and is connected to an external power supply via a lead wire 84.

  The end cover 88 also incorporates, in order from the inside in the axial direction, a one-way clutch 74 that rotatably supports the output shaft 71 and a holding body 87 that holds a bearing 85 that rotatably supports the output shaft 71. Have been. In this case, as described above, the one-way clutch 74 does not idle when the manual handle 6 is wound, and transmits the power to the spool 7 when the drive motor 70 is driven. It has a function of allowing the shaft 71 to rotate in only one direction.

  In the above configuration, the left side plate 4a side of the drive motor 70 has a watertight structure by the end cover 88 and the holding body 87, and the reduction mechanism 20 side has an opening formed in the bearing support 3A of the front frame 3c. The output shaft 71 is inserted through the opening, and the output shaft 71 is rotatably supported by the opening through the bearing 100. In the present embodiment, seal members are provided at various points on the reel body 5 so that the watertightness of the drive motor 70 can be improved. Such a sealing member can be constituted by, for example, an O-ring or a cover body formed of a rubber-based or silicon-based material. It is appropriately modified depending on the installation mode of the constituent members.

  The output shaft 71 of the drive motor 70 is rotatably supported by the bearing 85 on the left side plate 4a side, and is rotatably supported by the bearing 100 on the speed reduction mechanism 20 side. In this case, the bearing 85 on the left side plate 4a rotatably supports the output shaft 71 with respect to the holding body 87 without using a seal member by the above-described watertight structure, and the bearing 85 on the reduction gear mechanism 20 side. 100 rotatably supports the output shaft 71 in a state where the space between the bearing support 3A and the output shaft 71 is sealed by, for example, a magnetic seal mechanism. That is, by sealing the bearing 100 on the reduction mechanism 20 side, water, seawater, and the like cannot enter the drive motor 70.

  In the present embodiment, the first sun gear 21 and the bearing 100 are attached to the output shaft 71 so as not to come off, and the output shaft 71 having the rotor 75 is integrated with the bearing 100 and the first sun gear 21. The motor core unit can be detached from the recess 72. The outer diameter of the first sun gear 21 is larger than the outer diameter of the bearing 100 so that the bearing 100 and the first sun gear 21 can be pulled out together with the output shaft 71 from the opening of the bearing support 3A of the front frame 3c. Is also set small.

  In the electric fishing reel 1 of the present embodiment in which the magnetic body 73 is provided with the field control coils 120A and 120B as described above, the magnetic field generated by the field by applying a control current to the field control coils 120A and 120B. (By controlling the value of the current supplied to the field control coils 120A and 120B, the strength of the field magnetic field can be adjusted). Therefore, by increasing the strength of the field magnetic field by the control current, the inclination of the TN characteristic line L1 peculiar to the motor shown in FIG. 5 is reduced like the TN characteristic line L1a shown in FIG. Therefore, low-speed and high-torque driving can be realized. On the other hand, the inclination of the motor-specific TN characteristic line L1 shown in FIG. 5 is increased as shown by the TN characteristic line L1b shown in FIG. 3 by reducing the strength of the field magnetic field by the control current. Therefore, high-speed and low-torque driving can be realized.

  Therefore, as shown in FIG. 4, the electric fishing reel 1 of the present embodiment includes a control unit 150 that generates a control current supplied to the field control coils 120A and 120B and a current supplied to the rotor coil 75B. The control unit 150 further increases or decreases the current value of the control current supplied to the field control coils 120A and 120B and / or changes the direction in which the control current is supplied, thereby increasing the torque at a low motor speed. It is possible to switch between a low-speed high-torque mode for obtaining a low-torque mode and a high-speed low-torque mode for obtaining a low torque at a high motor rotation speed. Further, the control unit 150 is electrically connected to a motor output adjustment unit 130 and a mode input unit 140 which are operated by, for example, a fisherman, and the control unit 150 receives a signal from the motor output adjustment unit 130 and the mode input unit 140. A control current supplied to the field control coils 120A and 120B and a current supplied to the rotor coil 75B are generated in accordance with the input signal and supplied to the field control coils 120A and 120B and the rotor coil 75B, respectively. I have.

  In this case, specifically, if the magnetic material 73 (73A, 73B) constituting the field is a magnetic material having no magnetic force and to be magnetized, such as a rare earth element, the field is increased only by increasing or decreasing the control current. The strength of the magnetic field can be adjusted. That is, when the control unit 150 increases the control current value to be supplied to the field control coils 120A and 120B according to the input signal from the mode input unit 140, the field magnetic field becomes strong, and the rotation speed of the drive motor 70 decreases. , The motor becomes a high-torque motor (the inclination of the TN characteristic line decreases from L1 to L1a as shown in FIG. 3), and the electric reel 1 can be driven at a high torque at a low speed (see FIG. 3). Although the speed of winding the fishing line by the spool 7 decreases, the force of winding the fishing line increases.) This is, in a sense, similar to the state when a low gear is selected in an automobile, and is an ideal speed-torque balance state particularly when interacting with a large fish.

  On the other hand, when the control unit 150 lowers the control current value to be supplied to the field control coils 120A and 120B in accordance with the input signal from the mode input unit 140, the field magnetic field is weakened, and the rotation speed of the drive motor 70 is reduced. Although it is raised, it becomes a high-speed rotation motor and cannot output so much torque (the fishing line winding force by the spool 7 is weak, but the fishing line winding speed is high). Sufficient performance can be obtained.

  On the other hand, if the magnetic substance 73 (73A, 73B) constituting the field is a permanent magnet having a magnetic force from the beginning, winding up with the basic performance of the field magnet without energizing the field control coils 120A, 120B. Is also possible. In this case, the target fish can be efficiently wound by setting the speed reduction ratio as a reel mainly assuming the speed and torque necessary for the exchange with the target fish. However, the performance can be enhanced by energizing the field control coils 120A and 120B. In this case, if the value of the control current applied to the field control coils 120A and 120B is increased, more powerful winding can be performed. On the other hand, if the control current is set to flow in the opposite direction (flow in the direction to weaken (cancel) the magnitude of the field magnetic field) by using an H-bridge circuit (by changing the direction of application of the control current), the field The magnetic field is weakened, and the winding can be performed at a higher speed although the torque is not high.

  In the present embodiment, the mode switching between the low-speed high-torque mode and the high-speed low-torque mode is performed by the mode input unit 140 separate from the motor output adjustment unit 130 for adjusting the output of the drive motor 70. However, if the control current can be increased or decreased (inverted) within the control circuit in accordance with the motor output adjustment by the motor output adjustment unit 130, the motor output adjustment unit 130 itself can perform the automatic mode switching without separately providing the mode input unit 140. May be possible. In this case, it is ideally desirable to control the energization of the current to the coil 75B of the rotor 75 at a high duty ratio, and to control the strength of the field magnetic field by the control current.

  As described above, in the present embodiment, in order to control the strength of the field magnetic field which has not been conventionally performed in the electric reel, the performance desired by the user such as high torque at low speed and low torque at high speed is mechanically achieved. The structure can be realized compactly and inexpensively without a transmission mechanism. In addition, since the control current can be controlled steplessly electrically, rather than mechanically with a speed reduction mechanism, the low-speed high-torque drive and high-speed low-torque drive can be smoothly and continuously controlled (steplessly). Therefore, an ideal speed-torque balance can be realized over the entire winding speed of the electric reel.

  According to such a configuration, the mode switching such as high torque at low speed rotation and low torque at high speed rotation can be performed electrically without passing through the transmission gear system. Even if the reduction ratio of the reduction gear is increased, it is possible to suppress heat generation and back electromotive force by increasing the energization time rate to the motor.

  The present invention is not limited to the above-described embodiment, and can be variously modified and implemented without departing from the gist thereof. For example, in the above-described embodiment, the drive motor 70 is provided outside the spool 7, but the drive motor 70 may be provided inside the spool 7. Further, the technical idea of the present invention may be applied to a small-diameter motor to obtain a large winding force (winding torque) when winding slowly. In addition, the winding device of the present invention can be used as a fishing electric reel as in the above-described embodiment, and can also be used to wind an object such as bedding, packing, a temporary scaffold, a building, a fishing implement to a predetermined position, It can also be used for unloading, and further, its application field is not limited, such as loading on a drone (unmanned aerial vehicle), unloading luggage from the drone, or hoisting luggage onto a drone above. Therefore, the traction member wound around the spool (rotating body) is a fishing line in the electric fishing reel of the above-described embodiment, but a wire, a chain, a rope, or the like is used as the traction member depending on the use of the hoisting device. Can be done.

1 Electric fishing reel (winding device)
3a, 3b Side plate 5 Reel main body (device main body)
7 Spool 70 Drive motor 71 Motor output shaft 73, 73A, 73B Magnetic body 75 Rotor 75B Coil 120A, 120B Field control coil 150 Control unit

Claims (6)

A spool rotatably supported between the left and right side plates of the apparatus main body, and a drive motor provided on the apparatus main body to rotationally drive the spool, wherein the drive motor is energized by a coil wound around a rotor. A hoisting device that rotates the spool by rotating a motor output shaft by rotating the rotor with a force received from a magnetic field formed by a magnetic material constituting a magnetic field,
The drive motor is provided with a field control coil that is wound around the magnetic body that constitutes the field and that receives a control current for controlling the strength of a magnetic field generated by the field. A hoisting device.   A control unit that generates a control current to be supplied to the field control coil, wherein the control unit increases or decreases the current value of the control current and / or changes the direction of the control current to reduce the motor rotation speed. 2. The hoisting device according to claim 1, wherein switching between a low-speed high-torque mode for obtaining a high torque and a high-speed low-torque mode for obtaining a low torque at a high motor rotation speed is possible.   The hoisting device according to claim 1 or 2, wherein the drive motor is a brush type DC separately excited motor.   The winding device according to any one of claims 1 to 3, wherein the magnetic material is a permanent magnet.   The hoisting device according to any one of claims 1 to 4, wherein the hoisting device is configured as an electric fishing reel having a reel body as the device main body.   A flying object comprising the hoist device according to any one of claims 1 to 5.