JPH10191850A - Motor-driven reel for fishing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the radiation performance of semiconductor power control element, etc., for a motor-driven reel for fishing. SOLUTION: A spool 1 for winding a shifting line, motor 2 for rotationally driving the spool 2, motor driving part 4 composed of a semiconductor power control element and a control part 5 for controlling the motor driving part are attached to a reel frame 6. A heat pipe 21 is used as a heat conducting means for conducting the heating quantity of motor or semiconductor power control element with the drive of motor-driven reel for fishing to the outside of this motor-driven reel for fishing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric fishing reel capable of easily dissipating heat from a heating element such as a motor for winding a fishing line.

[0002]

2. Description of the Related Art An electric reel for fishing has a problem of heat generation of a motor for winding a fishing line and a problem of heat generation of a semiconductor power control element for driving the motor. In particular, recent electric reels for fishing tend to be smaller and lighter, and the above-described heating elements must be mounted at high density in a small space, and the temperature rise is greater than before. As an electric reel for fishing on which such a heating element is mounted at high density, there is one described in, for example, JP-A-8-205728. In this case, a large number of motor drive FETs (field effect transistors) are housed in a single waterproof container at high density.

However, a semiconductor power control element such as an FET has a problem in that if the temperature rise is large, the original current capability cannot be sufficiently exhibited. Therefore, conventionally, a semiconductor power control element has been used as a means for dissipating heat generated by the semiconductor power control element. For example, a metal radiating fin is provided in a case such as a control element. In addition, since heat is easily generated around the motor, heat is dissipated into the atmosphere from around the motor.
In the electric reel of Japanese Utility Model Application Laid-Open No. 61-118258, the shaft of the spool enclosing the motor is supported by an inner plate made of a material having good thermal conductivity, and heat generated by driving the motor is passed through the spool and the inner plate to the atmosphere. Trying to dissipate inside.

[0004]

However, the heat radiating means using only the conventional heat radiating fins has a problem that the heat radiating efficiency is not good. In particular, in a structure requiring water tightness, such as an electric reel for fishing, the outer periphery of the radiation fin is sealed, and the cover surrounding the radiation fin is generally poor in heat conductivity to prevent heating. Since it is made of a synthetic resin, the heat dissipation is further reduced.

In the case of the electric reel disclosed in Japanese Utility Model Unexamined Publication No. 61-118258, since the inner plate must be made of a material having good thermal conductivity, there is a problem that the material is restricted, and furthermore, the wall thickness is increased to some extent. There is also a problem that the weight of the entire reel increases because it must be increased. There is also a problem that a high degree of heat conductivity is required for the bearing between the inner plate and the spool.

[0006]

In order to solve the above-mentioned problems, a first aspect of the present invention is a spool 1 on which a fishing line is wound.
A motor 2 for rotationally driving the spool 1;
Motor drive unit 4 composed of semiconductor power control element 3
And a control unit 5 for controlling the motor driving unit 4, wherein the calorific value of the motor 2 or the calorific value of the semiconductor power control element 3 is determined by the electric reel for fishing. An electric fishing reel in which a heat pipe 21 is used as a heat transfer means for transferring heat to the outside is provided.
Alternatively, a heat transfer section 22 is provided for the semiconductor power control element 3 and the motor 2 or the semiconductor power control element 3
A heat radiating section 23 is provided at a location on the reel frame 6 where there is no heat transfer due to radiation or convection from the heat transfer section 22.
An electric reel for fishing in which both ends of the heat pipe 21 having a vertical height difference between the heat pipe 21 and the heat radiating section 23 are connected to each other.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings.

This electric fishing reel has a construction as shown in FIG. 1, and has a spool 1 for winding a fishing line, a motor 2 for rotating the spool 1, and a semiconductor power control element. 3 (see FIG. 3), a motor drive unit 4 and a control unit 5 for controlling the motor drive unit 4 are mounted on a reel frame 6.
The reel frame 6 serves as a skeleton of the electric fishing reel and is an integrally molded product made of resin, metal, or the like. As shown in FIG. 2, left and right frame plates 7 and 8 and the left and right frame plates are provided. It has upper, lower and rear columns 9, 10, 11 for connecting between 7, 8 respectively. As shown in FIG. 1, the spool 1 is rotatably wound between left and right frame plates 7 and 8 via a bearing (not shown).
Side plates 12 and 13 are attached to the outside of 8, respectively.

The spool 1 is driven to rotate by power from the motor 2 or the handle 14. The motor 2 is driven by an external battery (not shown). The motor 2 is fixed to the reel frame 6 with its casing inserted into the cavity of the spool 2.
The output shaft 2a is connected to the spool 1 via a gear reduction device (not shown). The drive of the motor 2 causes the spool 1 to wind up the fishing line around its trunk. Although not shown, the shaft of the handle 14 penetrates the right side plate 13 and the frame plate 8 to the left and right, and transmits power by operating the handle 14 to the spool 1 via a gear train, a clutch and the like.

The motor drive unit 4 is housed in a case 15 made of a synthetic resin or the like as shown in FIG. 3, and is disposed between the left frame plate 7 and the side plate 12 together with the case 15 as shown in FIG. It is inserted and fixed in the empty room. This case 15
Inside, a printed circuit board 16 is fixed, on which a plurality of semiconductor power control elements 3 composed of, for example, FETs are mounted by soldering.

The control unit 5 has a central processing unit (CPU) 18 built in a control box 17 as shown in FIG.
Switch button group 1 arranged on control box 17
9 and the spool speed signal from the spool speed detecting means (not shown).
A motor drive signal is created at 18 and output to the motor drive unit 4. Control box 1
7 is a display 2 for displaying predetermined control contents and the like.
0 is provided. Upon receiving the motor drive signal from the control unit 5, the motor drive unit 4 amplifies the signal in terms of power and changes the power applied to the motor 2.

When the motor 2 and the semiconductor power control element 3 generate heat during the operation of the fishing electric reel, and the temperature of the semiconductor power control element 3 and the like rises due to the heat storage, as described above, their abilities become sufficient. Will not be exhibited. Therefore, the heat generated by the motor 2, the semiconductor power control element 3, and the like is transferred to the outside of the fishing electric reel,
In order to prevent the temperature of the semiconductor power control element 3 and the like from rising, the electric reel for fishing is provided with the following heat transfer means using a heat pipe.

[0013] As shown in FIG.
Is an elongated pipe closed at both ends and is a bendable pipe. A small amount of volatile working fluid is sealed in the tube after exhausting, and the working fluid collected on the cold side is returned under natural flow or by utilizing the capillary action of a wick made of a thin metal wire. The heat pipe 21 extends between the vicinity of the semiconductor power control element 3 and a predetermined portion of the reel frame 6 where there is no heat transfer due to radiation or convection from the motor 2 or the semiconductor power control element 3.

More specifically, as shown in FIG. 3, a heat transfer section 22 is provided for the semiconductor power control element 3 which is a high-temperature section, and as shown in FIG. A heat radiating portion 23 is provided at a predetermined position on the reel frame 6 where there is no heat transfer by radiation or convection from 3,
Both ends of the heat pipe 21 are connected to the heat transfer section 22 and the heat radiating section 23, respectively. Both ends of the heat pipe 21
The heat pipe 21 itself is inclined, for example, to provide a height difference in the vertical direction, the low place side is connected to the heat transfer section 22 side, and the high place side is connected to the heat radiating section 23 side. Desirable for increasing. The heat transfer section 22 is formed of, for example, a metal heat transfer plate, and the heat transfer plate is applied to the surface of the package of the semiconductor power control element 3 in the case 15. Heat transfer plate 2
Silicon grease for heat dissipation or the like is filled between the semiconductor device 2 and the surface of the package of the semiconductor power control element 3 in order to enhance the adhesion between them. One end of the heat pipe 21 penetrates the wall of the case 15 and is fixed to a metal heat transfer plate as the heat transfer portion 22 by welding, brazing, or the like. This heat transfer plate may be omitted, and one end of the heat pipe 21 may be brought into direct contact with the surface of the package of the semiconductor power control element 3.

The radiator 23 is, for example, a metal radiator plate.
As shown in FIG. 2, the heat radiating plate is fixed to the back surface of the upper support 9 of the reel frame 6 by a suitable means such as screwing, fitting, bonding or the like. The other end of the heat pipe 21 is fixed to the heat sink by welding, brazing, or the like.

The location where the heat radiating portion 23 is attached is not limited to the upper column 9 but may be attached to another column. When the reel frame 6 is made of metal, the heat radiating plate may be omitted, and the other end of the heat pipe 21 may be directly attached to the reel frame 6. The method of attaching the other end of the heat pipe 21 to the radiator 23 is as follows.
As shown in FIG. 5, the heat radiating portion 23 and another fixing metal plate 24
And the other end of the heat pipe 21 may be sandwiched.

Further, in this embodiment, the heat pipe 21 is provided for the semiconductor power control element 3, but another heat pipe may be provided for the motor 2.

When the motor 2 is driven in the operation of the fishing electric reel, the semiconductor power control element 3 and the like generate heat.
Through the heat dissipating part 23 and is radiated from the heat dissipating part 23 to the atmosphere. As a result, heat storage of the semiconductor power control element 3 and the like is prevented, and the performance is sufficiently exhibited.

The present invention can be used for a reel provided with a motor outside the spool. In this case, a single heat pipe can be provided for the element and the motor.

[0020]

According to the present invention, in the electric fishing reel, the heat generated by the semiconductor power control element and the like can be efficiently radiated to the outside of the reel by the heat pipe. The semiconductor power control element can be prevented from thermal destruction, etc., and the performance of the semiconductor power control element can be sufficiently exhibited.
Mounting at higher density is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric fishing reel according to the present invention.

FIG. 2 is a perspective view of a reel frame.

FIG. 3 is a sectional view of a motor drive unit.

FIG. 4A is a perspective view showing a state in which a motor driving unit and a heat sink are connected by a heat pipe, and FIG.
It is an arrow BB view.

FIG. 5A is a plan view showing another mode in which a motor drive unit and a heat sink are connected by a heat pipe;
(B) is a view on arrow BB in FIG.

FIG. 6 is a partially cutaway plan view showing an example of a heat pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Spool 2 ... Motor 3 ... Semiconductor power control element 4 ... Motor drive part 5 ... Control part 6 ... Reel frame 21 ... Heat pipe 22 ... Heat transfer part 23 ... Heat radiating part

Claims (2)

[Claims] 1. A spool on which a fishing line is wound, a motor for rotating the spool, a motor drive unit including a semiconductor power control element, and a control unit for controlling the motor drive unit are mounted on a reel frame. Wherein the heat pipe is used as a heat transfer means for transferring the calorific value of the motor or the calorific value of the semiconductor power control element to the outside of the fishing electric reel. For electric reel. 2. A heat radiating part is provided for the motor or the semiconductor power control element, and a heat radiating part is provided on the reel frame where there is no heat transfer by radiation or convection from the motor or the semiconductor power control element. Wherein the heat transfer section and the heat radiating section are connected to both ends of the heat pipe having a vertical difference in height, respectively.