JPS63146735A - Squid fishing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a squid fishing machine used on a fishing boat.

[Prior art and its problems]

In a squid fishing machine, a squid fishing hook winding drum is fixed to a shaft that extends through the outer case, and the shaft is rotated while reciprocating by a distance equal to the width of the drum, and the line is wound around the drum while the squid fishing machine jerks the hook. Many squid fishing machines are installed on fishing boats and used for fishing. By the way, since the space on a fishing boat is small, squid fishing machines used on a fishing boat are strongly required to be small in size. ! It is possible to load a large amount of G1 fishing.

In addition, it must be lightweight in order to ensure sufficient footing, and since it will be used in a harsh environment where it is exposed to sea breeze, it must have a structure that has a small number of parts and is difficult to break down.

On the other hand, in conventional squid fishing machines, a reducer is attached to the motor to reduce the rotation speed to a predetermined speed, and a chain is wound between the output shaft of this reducer and both sprockets of the shaft to which the needle winding drum is fixed. was rotating. For this reason,
Chain failures occurred, these space occupancies increased, and the return screw mechanism, which is one of the mechanisms for reciprocating the shaft, was installed as an independent separate structure, making it difficult to create a compact design. As a result, it was extremely difficult to reduce the size and weight, which is the most important aspect of squid fishing machines used on fishing boats. They also have a large number of parts, and are particularly prone to failure due to the chain drive, and require a great deal of time and effort for fishing crews to inspect and maintain onboard the fishing boat, reducing operating rates. As described above, conventional squid fishing machines have never fully satisfied the above-mentioned conditions required for use on fishing boats6.
OBJECTS OF THE INVENTION It is therefore an object of the present invention to provide a squid fishing machine that can be made smaller, lighter, and more robust, has a smaller number of parts, has a compact structure, and is less likely to break down.

[Structure of the invention and its effects]

The squid fishing machine of the present invention includes a worm driven by a motor, a worm wheel that meshes with the worm, and a shaft that is slidably held in the axial direction of the worm wheel and that transmits the rotational torque of the worm wheel. , two intersecting helical screws, one right-handed and one left-handed, connected at both ends to form an endless groove on the surface, a return screw provided on the shaft, and a pin that engages with the groove of the return screw.

It consists of an inner case that encloses the worm gear, the shaft including the return screw, and the pin, an outer case that encloses the inner case and the motor, and a squid hook winding drum that is fixed to the shaft that extends through the outer case. It is characterized by this.

In other words, the worm gear, the shaft containing the return screw, and the pin were installed inside the inner case.

The extremely compact structure makes it suitable for mounting on fishing boats with limited space, and allows large numbers of squid fishing machines to be mounted on even small fishing boats. Furthermore, since it does not use a reducer made of spur gears, sprockets, chains, etc., the number of parts is reduced, making it lighter and more robust, so it will not break down even if it is subjected to impact from the rolling or pitching of a fishing boat. This eliminates the hassle of maintaining and repairing squid fishing equipment for fishing crews.

〔Example〕

The present invention will be specifically described below based on embodiments shown in the drawings.

Inside an outer case 1 made of stainless steel, an inner case 2 which is divided into two parts and screwed together is disposed. This inner case 2
Inside, a worm 3 and a worm wheel 4 having a predetermined gear ratio are disposed in mesh with each other so as to rotate freely. directly driven by 5. A one-way clutch 41 is incorporated into the worm wheel 4 as required. This is to allow the shaft 6 to rotate freely when it overruns. The shaft 6 is inserted into the center hole 42 of the worm wheel 4 so as to be slidable in the axial direction.
A flat portion 61 is formed in a portion of the shaft 6, and the center hole 42 of the worm wheel 4 also has a shape corresponding to this, and rotational torque is transmitted to the shaft 6 due to this irregular shape. However, any mechanism may be used as long as it transmits rotational torque to a slidable shaft, such as spline fitting or fitting between a key and a long groove.

A return screw 7 is fixed to a portion of the shaft 6 adjacent to the flat part 61, and this return screw 7 has two helical screws, a right-hand thread and a left-hand thread, that intersect and are connected at both ends of each. Endless spiral grooves 71 are formed on the surface, and the pitch of the grooves 71 is slightly larger than the outer diameter of the squid fishing line. On the other hand, the pin 7 that engages with this groove 71
2 is attached to the inner case 2, so that at least a part of the return screw 7 is enclosed in the inner case 2.

When the shaft 6 rotates in a certain direction, the pin 72 is engaged with the endless spiral groove 71, so the shaft 6 rotates in a certain direction.
is screwed left and right, repeating reciprocating motion. The stroke of this reciprocating motion is equal to the +[1 dimension of the winding surface of the drum 8. The shaft 6 is supported by slide bearings 11 attached to the outer case 1 and extends outward from both sides of the outer case 1. At both ends of the shaft 6 are drums around which squid fishing line (not shown) is wound. 8 are installed respectively. In some cases, the shaft 6 may extend from only one side of the outer case 1, and one drum 8 may be attached to the end thereof. This drum 8 has a substantially elliptical shape, and even if the drum 8 rotates uniformly, the yarn is wound around the drum 8 while performing a jerking motion.

In the squid fishing machine with such a configuration installed on a fishing boat, the drum 8 is rotated in the opposite direction to set the line at a predetermined water depth to catch squid. and.

When the motor 5 is energized, the worm gear rotates, the shaft 6 rotates while repeating reciprocating motion, and the drum 8 also moves in the same way. Therefore 1. The line is wound uniformly from end to end without being biased toward the winding surface of the drum 8, and the squid is caught.

In this way, the worm 3, the worm wheel 4, the shaft 6 including the return screw 7, and the pin 72 are mounted so as to be enclosed within the inner case 2, resulting in a very compact structure that is inexpensive and has a small number of parts. , reduction gears and sprockets made of spur gears, which can be made smaller, have fewer failures, and require less effort for one-time inspection and maintenance.

Since it does not use chains, it can be made lighter and more robust.

Incidentally, the size of the outer case of a conventional squid fishing machine that uses a reducer made of spur gears, sprockets, chains, etc. was about 50,000 mm and the weight was about 60 mm. According to the authors, the size of the outer case of a squid fishing machine with the same capacity is about 40,000 kg, and the weight is about 50 kg, which can be extremely effective in reducing size and weight.

【Effect of the invention〕

As explained above, the squid fishing machine of the present invention includes a worm driven by a motor, a worm wheel that meshes with the worm, and a worm wheel held slidably in the axial direction of the worm wheel. The shaft through which the power is transmitted and the two intersecting spiral screws, one right-handed and the other left-handed, are connected at both ends to form an endless groove on the surface, and the return screw provided on this shaft and the groove of this return screw are connected at both ends. These worm gears have pins that engage with them.

It is characterized by consisting of an inner case that encloses a shaft including a return screw and a pin, an outer case that encloses this inner case and a motor, and a squid hook winding drum that is fixed to the shaft that extends through this outer case. Therefore, it has a great effect on reducing the size and weight, which is the most important requirement when used on a fishing boat, making it suitable for mounting on a fishing boat with a narrow space, and making it possible to mount a large number of squid fishing machines on a small fishing boat. Become. In addition, since it has a compact structure with a small number of parts and is less likely to break down, it is possible to create a squid fishing machine that does not require the fishing crew to spend time on maintenance or repair.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, and Fig. 2 is a - - of Fig. 1.
■It is a cross-sectional view along line.

Claims (1)

[Claims] A worm driven by a motor, a worm wheel that meshes with the worm, a shaft that is slidably held in the axial direction of the worm wheel and transmits the rotational torque of the worm wheel, and intersecting right-handed and left-handed screws. Two spiral screws are connected at both ends to form an endless groove on the surface, a return screw provided on the shaft, a pin that engages with the groove of the return screw, and these worm gears.
A squid fishing machine consisting of an inner case that encloses a shaft including a return screw and a pin, an outer case that encloses this inner case and a motor, and a squid fishing hook winding drum that is fixed to the shaft that extends through this outer case. .