JP3479320B2 - Electric reel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a case, a rotor,
An electric motor having a permanent magnet that exerts magnetism on the rotor and an output shaft that is externally fitted and fixed to the rotor and integrally rotates is arranged on the reel unit so as not to rotate relative to the output shaft. The present invention relates to an electric reel configured to rotationally drive a spool arranged in the reel body via a power transmission device.

[0002]

2. Description of the Related Art Conventionally, a permanent magnet made of ferrite has been used as an electric motor used in an electric reel.

[0003]

This type of ferrite motor has been used for electric fishing reels because it is relatively easy and available at a low price. Even if the number of turns is optimized, the range of performance that can be realized by the size of the motor has almost reached the limit. On the other hand, when using the electric reel, it is desired to increase the winding speed of the tackle. This is a request born from the so-called "quick return" need to shorten the time required to wind up a tackle without bait and increase the number of times the tackle is thrown in.
In order to increase the winding speed using a conventional ferrite motor, it is not possible to expect improvement in the performance of the motor itself as described above.Therefore, either use a motor with a size that is one size larger or change the voltage supplied to the motor. Although it is necessary to raise the size, an increase in the size of the motor leads to an increase in the size of the reel itself, and a step-up requires a separate circuit to be installed. Furthermore, since both of these methods increase the current value flowing through the motor,
The drawbacks of increased heat generation and premature battery consumption cannot be avoided. An object of the first aspect of the present invention is to provide an electric reel having a high winding speed without increasing the size of the device and increasing the power consumption. Purpose of the first invention
Offers a compact electric reel in addition to the above
There is a point to do. The object of the first invention is to further clarify the above object.
The point is to provide the electrically achieved reel. This first round
In addition to the above objectives, the purpose of the
The point is to provide the one that adopts the corresponding output shaft configuration.

[0004]

According to a first aspect of the present invention, there is provided a rotor, a permanent magnet for exerting magnetism on the rotor, and an output shaft that is integrally fixed to the rotor and integrally rotates. An electric reel configured such that the electric motor is arranged so as not to rotate relative to the reel body, and a spool arranged in the reel body is rotationally driven via a power transmission device connected to the output shaft. Then, a ferromagnetic material containing a rare earth element or a ferromagnetic material having an equivalent maximum energy product is used for the permanent magnet, the electric motor is located in the spool, and the power transmission device is
Constituted by a planetary reduction mechanism comprising a sun gear located within the spool, of the output shaft, wherein the rotor is a shaft diameter of a portion which is externally secured, the output unit is connected to the power transmission apparatus It is formed in a diameter larger than the shaft diameter, and its action and effect are as follows.

[0005]

That is, by using a ferromagnetic material containing a rare earth element or having an equivalent maximum energy product for a permanent magnet, the magnetic force can be made stronger than that of a ferrite magnet of the same size. Furthermore, the reel structure
Internal space occupied by spools, which are essential components
Since the motor is located in the
There is no need to reserve space. Also, the same as the conventional
A smaller diameter motor can be used to obtain output.
Can reduce the diameter of the spool thread winding part,
Increase or configure a more compact electric reel
It is possible. Furthermore, the permanent magnet used in the motor
Since it is located inside the spool, the motor is installed on the spool.
Moisture that enters the position can be suppressed. Furthermore, power
Place the transmission device in the spool and reduce it including the sun gear.
By configuring with a high speed gear mechanism,
It is necessary to secure a space for arranging various power transmission devices.
In addition, the reel unit can be made compact. Furthermore, the output shaft
The diameter of the part to which the core of the electric motor is attached is increased and the shaft
At the same time as improving the stress and preventing slippage of the core and output shaft
Power transmission from the electric motor to the spool
The diameter of the part connected to the device is reduced to support the power transmission device.
It is possible to prevent the influence of the shaft diameter on the noise.

[0006]

Therefore, the winding speed of the electric reel can be increased without increasing the size of the motor and increasing the power consumption. In addition to the basic effects described above, the following effects can also be achieved. (A) As shown in FIG. 11, there is little fluctuation in the number of revolutions with respect to the torque, so there is a merit that the winding speed does not decrease even when a load is applied, and the stall torque when the number of revolutions is almost zero. 1760 g-cm (the solid line indicating the number of revolutions in FIG. 11 intersects the horizontal axis) is 900 g-cm of the stall torque of the conventional ferrite motor (the point where the dotted line indicating the number of revolutions intersects the horizontal axis in FIG. 11). It is about twice as much as the above, and the operation for starting winding becomes smooth. Further, it is possible to set a speed reduction ratio of the transmission means to be smaller than that of the conventional one and realize a higher winding speed. (B) When the reduction ratio is set to be larger than the conventional value so that the winding load and the winding speed are equal to those of the conventional one, the current value can be suppressed and an electric reel with low power consumption can be configured. (C) In FIG. 11, the dotted line shows the current value of the conventional ferrite motor and the solid line shows the current value of the rare earth motor, but the winding speed should be the same as that of the conventional motor when the same value of current is applied. When the reduction ratio is set, a powerful electric reel with a larger hoisting load can be obtained, and the maximum hoisting load can be increased while the breaker setting is the same as the conventional one. In addition to the above effects,
It is necessary to secure a space for arranging a new motor in the main unit.
No need to make the reel body compact
It Furthermore, an electric reel that uses a conventional ferrite motor
Increase the amount of bobbin to lower the work in progress to a deeper shelf.
The electric reel that can be pulled down impairs compactness
Can be provided without In addition, the permanent magnet in the motor
The effect of moisture on the motor is reduced and deterioration of motor quality is prolonged.
Can be prevented for a long time. Furthermore, use a planetary speed reduction mechanism.
For example, the reduction ratio from the motor to the spool, the sun gear and the planet
Gear ratio and number of carrier stages that support the planetary gear
Depending on the gear ratio of the planetary gear and the internal gear,
Di advantage cormorants have and can be set over a wide range without changing too much the of
One. This reduces the hoisting speed by reducing the reduction ratio.
A fast electric reel has a large winding force if the reduction ratio is increased.
Kina electric reel holds the reel unit compactly.
Can be realized. Furthermore, as the motor output increases
The shaft stress of the output shaft to improve the slip between the core and the output shaft.
While preventing the increase in size of the power transmission device.
Mu. Further, the fifth invention adopts the configuration of the fourth invention.
As a result, the following effects can also be obtained. That is, the winding force
To make a large electric reel
However, if the number of teeth of the sun gear is reduced, the root diameter becomes smaller.
Therefore, the strength of the gear will not be sufficient if the output shaft has a large diameter.
The drawback of disappearing can be solved. An object of the second invention is to provide, in addition to the object of the first invention, what can be advantageously performed in the manufacturing process and the like.

According to the second aspect of the present invention, the electric motor for driving and rotating the spool includes a rotor having a coil,
A permanent magnet that exerts magnetism on the rotor and an output shaft that rotates integrally with the rotor are provided, and
A ferromagnetic body containing a rare earth element or a ferromagnetic body having an equivalent maximum energy product is used for this permanent magnet, wherein the permanent magnet is coaxial with the rotation axis of the rotor. It is in that it is molded into a tubular shape,
Its action and effect are as follows.

[0008]

In other words, by using a ferromagnetic material containing a rare earth element or a ferromagnetic material having an equivalent maximum energy product for the permanent magnet, the magnetic force can be made stronger than that of the ferrite and Since the magnet can be composed of a single component and has a cylindrical shape that is connected in series in the circumferential direction, the strength can be improved accordingly, and the thickness of the cylindrical permanent magnet can be reduced.

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 2 and FIG. 3, the level winding mechanism L and the spool 2 for winding the yarn are arranged at the front and rear positions between the left and right side bodies 1 and 1 forming the reel unit, and the right side body 1 is arranged. A drag operating tool 3 and a handle 4 for driving the spool 2 are provided outside the device, and a control case 5 is provided between the upper parts of the left and right side bodies 1, 1 to form a fishing reel. An electric motor 6 and a planetary speed reduction mechanism P are installed inside the spool 2, and a cylindrical shaft 7 of the planetary speed reduction mechanism P is inserted with a shaft body 8 standing inside the right side body 1. In this shaft body 8,
A clutch member 9 that is engageable with and disengageable from the end of the cylindrical shaft 7 is fitted on the outside. The drag operation tool 3 is screwed onto a handle shaft 11 which is idled coaxially with a support shaft 10 standing on the right side body 1, and the handle 4 is fixed. The drag mechanism 1 is provided on the inner end side of the shaft 11.
2 and a ratchet mechanism R are provided.

When the handle 4 is rotated in the winding direction, the turning force of the handle 4 causes the drag mechanism 12 to rotate.
Input gear 9 of the clutch member 9 through the output gear 12A of
While being transmitted to A, it is transmitted to the spool 2 via the cylindrical shaft 7 and the planetary speed reduction mechanism P, and rotates the spool 2.
The drag mechanism 12 has a function of adjusting the pressure contact force between the friction plates inside the drag operation tool 3 by rotating the drag operation tool 3 to restrict the reverse rotation of the spool 2 in the yarn feeding direction, and the ratchet mechanism R The ratchet wheel 13, the ratchet pawl 14, and the switching lever 15 for switching the posture of the ratchet pawl 14 have the following functions. That is, when the ratchet pawl 14 is set in a posture in which the ratchet pawl 14 can be engaged with the ratchet wheel 13, the handle 4 can be rotated only in the winding direction, and cannot be rotated in the reverse direction. When the spool 2 can be driven in the winding direction and the ratchet pawl 14 is set in a posture in which it is separated from the ratchet wheel 13, the spool 2 can freely rotate, and at the same time, the electric motor 6 rotates in the winding direction. 2 cannot be driven. That is, the planetary reduction mechanism P includes the first sun gear 16 attached to the output shaft 6A of the electric motor 6,
The first planetary gear 17 that meshes with this, and the first planetary gear 17
It comprises a carrier 18 which rotatably supports, a second sun gear 19 formed on a boss of the carrier 18, and a second planetary gear 20 which is rotatably supported on the cylindrical shaft 7 so as to mesh with the carrier. The first and second planetary gears 17 and 20 mesh with the internal gear portion 2A of the spool 2, and the second planetary gear 20 is rotatably supported to form the cylindrical shaft 7 as a carrier. At P, the ratchet mechanism R functions to prevent the tubular shaft 7 from rotating in the feeding direction (including a state in which the handle 4 is being rotated in the winding direction). The driving force of 6 allows the spool 2 to rotate in the winding direction. Incidentally, the deceleration ratio of the planetary deceleration mechanism P is set by increasing the deceleration ratio to about 1/40, which enables stronger winding as compared with the conventional deceleration ratio of about 1/30. Conventionally, this would lead to a decrease in the winding speed, so such a low deceleration ratio 1
/ 40 could not be adopted.

Next, the structure of the electric motor 6 will be described. As shown in FIGS. 1 and 4 and 5, the coil 21
And a permanent magnet 23 that exerts magnetism on the rotor 22, and an output shaft 6A that rotates integrally with the rotor 22, and the permanent magnet 23 is provided with a rare earth element. The electric motor 6 is configured using the contained ferromagnetic material. The rotor 22 is composed of a core 26 having a coil 21, and the output shaft 6A has a rotating plate 25.
And a connecting pin 25A is projected from the rotary plate 25, and a hole 26A for the connecting pin 25A and a through hole 26B for the output shaft 6A are formed on the corresponding side surface of the core 26. 25A for connecting hole 26A
The output shaft 6A and the core 26 are integrated by being press-fitted into. As shown in FIG. 5, the output shaft 6A has a core 2
The diameter of the portion pressed into 6 is large, and the diameter of the portion protruding from the core 26 is small. this is,
As a portion to be press-fitted into the core 26, the core 26 and the output shaft 6 are
It is necessary to increase the diameter in order to avoid slippage in the press-fitted portion with A, but in the above-mentioned protruding portion,
This is because it is necessary to support the planetary speed reduction mechanism P, and the planetary speed reduction mechanism P cannot be increased in diameter because it is restricted by the spool diameter and the like.

The permanent magnet 23 is a sintered neodymium-iron-boron-based magnet, which is formed in a ring shape and is magnetized on opposite surfaces in the circumferential direction, as shown in FIG. The magnetization angle is 105 ° to 120 °. The magnet has a maximum energy product (BH) MAX of 64 to 80.
KJ / m ³ indicates (8~10MGO _e), the conventional ferrite magnets 23~28KJ / m ³ (2.9~3.5MG
It shows an improvement in magnetic performance compared to O _e ). Moreover,
Since the permanent magnet 23 is formed in a ring shape, the thickness of the ring is reduced, and the diameter of the core 26 is increased by the amount of the reduction, thereby increasing the motor horsepower. The ring-shaped magnet described above is made by abutting and fixing two magnets, which have the same specifications, with their axes aligned. As shown in FIG. 11, it is understood that the performance of the electric motor using the rare earth magnet 23 is improved as compared with the conventional electric motor using the ferrite magnet shown by the dotted line. That is, as the torque increases, the number of revolutions decreases less, and the current increases less.

As shown in FIG. 1, since a rare earth magnet is used as the permanent magnet 23 to improve the magnetic flux density,
The increase in the leakage magnetic flux due to the improvement of the magnetic flux density is configured such that the motor case 24 accommodating the rotor 22, the core 26 and the like is formed of a magnetic material such as iron and the iron motor case 24 suppresses the increase. A magnetic body such as iron is wound around the iron motor case 24 to form a flux ring 27 that suppresses leakage magnetic flux. The thickness of the flux ring 27 is set to 0.5 mm to 2 mm or more. As measures against the leakage flux, not only the above-mentioned measures but also the flux ring 34 is attached to the inner peripheral surface of the spool 2 accommodating the electric motor 6 to cope with the leakage flux. In the case of implementation, only one of the flux rings 27 and 34 may be provided.

An end ring 24A, which forms a signal line extraction portion for the electric motor 6, is formed at one end of the motor case 24, and the end ring 24A is made of metal. As a result, the heat dissipation characteristics can be improved in order to cope with the increase in the amount of heat generated due to the improvement in the motor horsepower due to the adoption of the rare earth magnet as the permanent magnet 23. A motor holder 28 is connected to a side of the end ring 24A, and a bearing 29 and a one-way bearing 30 that support the output shaft 6A are held in the motor holder 28. A screw portion 28A is formed at one end of the motor holder 28 opposite to the mounting position for the end ring 24A. The screw portion 28A is passed through the inner wall of the left side body 1 to form the screw portion 2A.
8A is fixed to the inner wall. This motor holder 28
The vibration absorbing material 31 is sandwiched between the intermediate end face of the above and the inner side wall of the left side body 1. On the other hand, a side frame 32 is attached to an end surface of the spool 2 opposite to the side where the motor holder 28 is attached, and a boss portion 32A is integrally formed on the side frame 32.
The boss portion 32A is supported by the right side body 1 by a bearing, and the spool 2 is rotatably supported. The vibration absorbing material 33 is sandwiched between the side frame 32 and the end surface of the spool 2.
However, the vibration absorbing material 33 may not be provided if circumstances permit. Therefore, although the use of the rare earth magnet as the permanent magnet 23 increases the motor vibration due to the improvement of the motor horsepower, the vibration can be suppressed by attaching the both vibration absorbing members 31 and 33. And further,
The vibration absorbing member 56 is sandwiched between the motor holder 28 and the end ring 24A to suppress the motor vibration. Further, it is not always necessary to provide the vibration absorbing materials 31, 56, and only one of them may be provided.

As shown in FIGS. 6 and 7, the control case 5 is internally provided with a control device 57 (an example of control means) formed of a microprocessor, and the length of the fishing line 52 fed from the spool 2 is increased. The liquid crystal display 47 for notifying the user of the electric motor 6 and the overcurrent detecting means 35 of the electric motor 6 are provided. The operation of notifying the display length of the fishing line 52 on the display 47 is performed by a wheel that meshes with the gear portion 2B of the spool 2. The control device 57 counts the signals from the pair of sensors 38, 38 which are affected by the magnetism of the magnet 37 embedded in the control unit 36, and an accurate numerical value obtained based on the data stored in advance corresponding to this count value is displayed. It is supposed to be output. The overcurrent detecting means 35 of the electric motor 6 will be described. As shown in FIG. 7, a voltage drop resistor 40 and A / A are provided on the ground side of the control transistor 39.
The D converter 41 is provided to configure the overcurrent detection means 35 of the electric motor 6. When the overcurrent is detected by the overcurrent detection unit 35 and the rotation of the spool 2 is not in the winding state, it is determined that it has taken root, and the current supply to the electric motor 6 is stopped. In the actual control, as shown in the control flow of FIG. 8, the speed is set by the speed setting switch to drive the electric motor 6, and the drive current of the electric motor 6 is monitored while being monitored by the overcurrent detection means 35. When the current is equal to or higher than the set value and the rotation speed of the spool 2 decreases (substantially stops), the current supply to the motor 6 is stopped. This makes it possible to cope with a sharp increase in current as compared with the electronic breaker type, and to stop the motor 6 by a software method before damaging the rod.

A case where the electric reel having the above-described structure is attached to the hollow fishing rod 51 will be described. As shown in FIG. 6, the thread 52 from the spool 2 has a thread insertion port 51A.
Although it further enters the rod 51, in that case, the reel mounting position and the thread insertion port 51A cannot be provided separately, so that the thread 52 exiting the spool 2 is directed in the direction toward the thread insertion port 51A. Since it is changed abruptly and the guide frame 53 of the level wind mechanism L is rubbed, it may be damaged early. Therefore, as shown in FIG. 6, a guide pin 54 is provided in front of the guide frame 53, and the guide pin 54
4 is fitted with a free wheel 54A such as a bearing, and the thread 52
The relative friction between the guide frame 53 and the guide frame 53 is reduced. Further, in the reel, the front and rear leg attachment parts 55, 55 are formed in different steps, and the guide frame 53 of the level wind mechanism L is directed toward the thread insertion port 51A in a state of being attached to the rod 51. .

[Other Embodiments] The present invention can be configured as follows, for example, in addition to the above embodiments. (A) The position where the electric motor 6 is installed may be an external type as shown below. As shown in FIG. 9 and FIG. 10, a sideways motor case 42 is erected in a state in which the front ends of both side bodies 1 and 1 are connected, and the motor case 42 is divided into front and rear to form a front space. A control device 57 is housed in the electric motor 6 and other spaces. The fins 4 for heat dissipation are provided on the outer peripheral surface of the motor case 42.
2A is formed, the flux ring 43 is mounted on the inner peripheral surface of the motor housing chamber, and the flux plate 44 is mounted on the inner surface of the housing chamber in which the control device 57 is housed.
Is installed to take measures against leakage magnetic flux and noise. (B) The number of planet gears 17 etc. per stage in the planetary reduction mechanism P is increased from three to four to five. As a result, the runout of the planetary reduction mechanism P as a whole is reduced, and the bearing load per planetary gear 17 or the like can be reduced. Therefore, it is possible to cope with an increase in the motor horsepower due to the adoption of the rare earth magnet, and it is possible to use a resin for the planetary gear 17 and the like. (C) As the bearings that support the output shaft 6A of the electric motor 6, there are the bearing 29 located in the motor holder 28 and the bearing 45 located in the cylindrical shaft 7, and these are sintered bearings. , The speed of the electric motor 6 itself (for example, 2
In order to achieve more than 10,000 rotations), a magnetic bearing may be used. As a result, the speed of the electric motor 6 can be increased, and at the same time, the reduction ratio of the output speed of the final stage can be prevented from being lowered while suppressing the reduction of the drive output by increasing the reduction ratio. (D) As shown in FIG. 7, an internal battery 46 as an internal power source is provided in each of the side cases 1 and 1, and the internal battery 46 is used as a backup power source for the liquid crystal display 47 and the storage means 48. The connection with 49 is controlled as follows. When the external power supply 49 is connected, the liquid crystal display 4
Display starts at 7. Main switch 5 provided in control case 5 in that state
When 0 is operated, the electric motor 6 operates. Main switch 5 without external power source 49 connected
When 0 is operated, only the liquid crystal display 47 operates. Even if the main switch 50 is operated again in this state, the electric motor 6 does not operate, and an alarm is activated to notify that the power supply is not connected. When the external power source 49 is connected in this state, the normal state is maintained. When the external power supply 49 is connected in this state, the alarm stops. When the external power source 49 is connected, the internal battery 46 is charged from the external power source 49 while supplying power to the liquid crystal display 47. (E) As the permanent magnet 23 used in the electric motor 6, another rare earth samarium-cobalt system may be used. Since this rare earth magnet has excellent weather resistance, it is suitable for use in fishing reels. (H) The rare earth magnet may be formed as follows. Rare earth magnet powder is bound with a resin binder to form a ring shape, which is magnetized in multiple poles in the circumferential direction.
As the magnet powder, isotropic neodymium / iron / boron-based materials can be used. (G) As the permanent magnet 23, a Mn-AL-C type magnet may be used, and at least the maximum energy product (BH) MAX of the ferrite magnet is approximately 40 KJ / m.
A magnet other than rare earth may be used as long as it exceeds ³ (5 MGO _e ). (H) The deceleration ratio of the planetary reduction mechanism P is 1/40
Other deceleration ratios can also be adopted, 1/30 that was previously adopted
The speed reduction ratio may be set to about 1/20 by reducing the speed reduction ratio. With such a set value, high-speed winding is possible, but it is 1 / 20th that of a conventional ferrite motor.
If a deceleration ratio of a certain degree is adopted, it will not be adopted because the torque will be insufficient and the hoisting force will decrease. On the other hand, 1/30
A moderate deceleration ratio can be adopted because both the hoisting force and the hoisting speed are improved.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing an electric motor in a spool.

FIG. 2 is a cross-sectional plan view showing the right side body of the reel.

FIG. 3 is a transverse plan view showing the left side body of the reel.

FIG. 4 is a vertical sectional side view showing an electric motor in a spool.

FIG. 5 is an exploded perspective view showing a core and a permanent magnet.

FIG. 6 is a vertical cross-sectional side view showing a state in which the reel is attached to the hollow fishing rod.

FIG. 7 is a control block diagram.

[Fig. 8] Control flow chart for when the system gets stuck

FIG. 9 is a plan view of a reel showing an external electric motor.

FIG. 10 is a vertical side view of FIG.

FIG. 11 is a graph showing characteristic curves of a motor using a rare earth magnet (solid line) and a motor using a ferrite magnet (dotted line).

[Explanation of symbols]

2 spools 6 electric motor 6A output shaft 21 coils 22 rotor 23 Permanent magnet P Planetary speed reducer

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01K 89/017 H02K 15/03

Claims (2)

(57) [Claims] 1. A rotor (22) and this rotor (22)
An output shaft (6A) in which the permanent magnet (23) for exerting magnetism on the rotor and the rotor (22) are externally fitted and fixed and integrally rotate.
An electric motor (6) provided with a non-rotatable relative to the reel body, and a spool (2) arranged in the reel body via a power transmission device connected to the output shaft (6A). the an electric reel that is configured to drive rotation, the ferromagnetic body containing a rare earth element permanent magnet (23), or a ferromagnetic material having an equivalent maximum energy product is used, the electric motor (6 ) is located in the spool (2) within said power transmission device is constituted by a planetary reduction mechanism (P) including a sun gear located at the spool (2) in the output shaft of (6A), An electric reel in which a shaft diameter of a portion to which the rotor (22) is fitted and fixed is larger than a shaft diameter of an output portion connected to the power transmission device. 2. The electric reel according to claim 1, wherein the permanent magnet (23) is formed in a tubular shape coaxial with a rotation axis of the rotor (22).