KR102351093B1 - Locking and unlocking device for automatically throwing fish trap - Google Patents

Abstract

A trap locking and unlocking device for automatic riding includes a first fixture fixed to a first annular frame and having a first magnetic member, and a second fixture fixed to the second annular frame and magnetically engageable with the first magnetic member. . The first fixture and the second fixture are fixed to each other by magnetic coupling of the first magnetic member and the second magnetic member in a folded state in which the first annular frame and the second annular frame are disposed adjacent to each other, and tension is applied from the rib As the magnetic coupling between the first magnetic member and the second magnetic member is released, they are separated from each other.

Description

LOCKING AND UNLOCKING DEVICE FOR AUTOMATICALLY THROWING FISH TRAP

The present invention relates to a trap locking and releasing device, and more particularly, to a trap locking and releasing device for fixing or expanding the trap in a folded state.

The trap used in the fishing industry is attached to the bottom of the line connected to the long line, and can be used in large quantities at the fishing grounds. While the ship is moving, the traps connected to the mullet line are thrown one by one according to the speed of the ship. When pitching the pots, the crew unfolds the pots stored in the folded state one by one. In order to untangle the intricately entangled lines and open the folded pot to be put into the fishing grounds, a long career and physical strength to maintain concentration for a long time are required. In particular, in this process, there are many accidents in which sailors are caught in a line or are injured by being caught in mechanical equipment due to fluctuations of the fishing vessel due to waves or unpredictable circumstances.

Recently, automatically expandable pots have been developed and sold to increase utilization, but these pots are usually made for individuals who enjoy leisure in freshwater as a leisure activity. .

Therefore, there is a need for a trap locking and unlocking means that can more effectively perform the accommodation and pitching of the existing trap that is pitched through a fishing vessel.

Korean Patent Publication No. 10-1216718

The present invention is to solve the above problems, and when the first and second fasteners are in the locked state, they can be accommodated in a folded state, and as the ship moves, the tension by a separate riding means, or already riding As the 1st and 2nd fixtures are released by the tension transmitted from the trap to the bridle line and the bridle line, it is an automatic pitching that can be pitched to the fishing ground in a state in which the trap is automatically expanded by the restoring force of the spring frame. The purpose is to provide a trap locking and unlocking device for

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A trap locking and unlocking device for automatic pitching according to an embodiment of the present invention for solving the above problems includes a first annular frame lifted by a rib line, and a second annular frame facing the first annular frame and , A spring frame having both ends fixed to the first annular frame and the second annular frame and applying an elastic force to the first annular frame and the second annular frame in a direction spaced apart from each other, the first annular frame, the second A trap locking device for automatic pitching of a trap having an annular frame and a fishing net surrounding an outer surface of the spring frame, the trap locking device comprising: a first fixture fixed to the first annular frame and having a first magnetic member; and a second fastener fixed to the second annular frame and having a second magnetic member magnetically engageable with the first magnetic member, wherein the first fastener and the second fastener are the first annular frame and the second fastener. In a folded state in which two annular frames are disposed adjacent to each other, the first magnetic member and the second magnetic member are fixed to each other by magnetic coupling of the first magnetic member and the second magnetic member, and as tension is applied from the rib line, the first magnetic member and the second magnetic member As the magnetic coupling between the magnetic members is released, they are separated from each other.

According to an embodiment of the present invention, the first fixture, the first frame fixing portion wrapped around a position of the first annular frame is fixed; a first fixing pin fastened through the first frame fixing part and the first annular frame; a rotation guide part extending from the first frame fixing part to the second annular frame side and having an insertion groove retracted toward the first annular frame, and a guide groove formed to be retracted outward from the inner surface of the insertion groove; and a rotation protrusion inserted into the insertion groove of the rotation guide and protruding from the outer surface is inserted into the guide groove and rotatably connected to the rotation guide, accommodating the first magnetic member therein, and from the rib line. It rotates as tension is applied, and includes a first magnetic member receiving portion having an insertion hole formed through the center in a direction toward the second annular frame, wherein the second fastener is one of the second annular frame a second frame fixing unit that wraps around the position and is fixed; a second fixing pin fastened through the second frame fixing part and the second annular frame; a second magnetic member accommodating part extending from the second frame fixing part toward the first annular frame and accommodating the second magnetic member therein; and a fastening protrusion formed to protrude from the center of the surface facing the first annular frame of the second magnetic member accommodating part and inserted into the insertion hole of the first magnetic member accommodating part; As the fastener approaches, the fastening protrusion is inserted into the insertion hole, and the first magnetic member accommodating part and the second magnetic member accommodating part come into contact with each other, thereby generating a magnetic coupling between the first magnetic member and the second magnetic member, The magnetic coupling between the first magnetic member and the second magnetic member may be released as the first magnetic member accommodating part rotates by the tension from the eyelet.

According to an embodiment of the present invention, the rotation guide portion includes a support groove formed to be retracted toward the first annular frame from the center of the retracted surface of the insertion groove, and the fastening protrusion is a side surface of the end of the first annular frame. and a support protrusion formed by protruding laterally from two parts located opposite to each other on the first shaft, and the first magnetic member accommodating part includes two parts located opposite to each other among the inner surfaces of the insertion hole to be laterally retracted. The first magnetic member accommodating part rotates so that the fastening groove is positioned on a second axis perpendicular to the first axis in a locked state in which the first fastener and the second fastener are fixed to each other. Accordingly, the support protrusion is supported by the first magnetic member accommodating part, and the first magnetic part is positioned on the first shaft so that the fastening groove is positioned on the first shaft in a release state in which the first fixture and the second fixture are separable from each other. As the member accommodating part rotates, the support protrusion may be detachable from the first magnetic member accommodating part along the fastening groove.

According to an embodiment of the present invention, the first magnetic member accommodating portion includes two first magnetic members accommodated in two portions located opposite to each other among the outer portions of the insertion hole, and the second magnetic member receiving portion includes the outer portion of the insertion hole. and two second magnetic members accommodated in two opposing portions of the portion, wherein the two first magnetic members and the two second magnetic members are disposed on the same axis in the locked state; They may be disposed on axes perpendicular to each other in the unlocked state.

According to an embodiment of the present invention, the first magnetic member receiving part is fastened from the outer surface to the center direction, the fastening depth is adjustable within a predetermined range, and the ribbed is connected to the head to transmit tension. An adjustment screw may be provided.

According to the present invention, it is possible to automatically expand the trap in the folded state by releasing the support and magnetic coupling between the first fixture and the second fixture by using the tension of the rib line that occurs naturally during throwing, and unfolds the traps to be thrown one by one. It can reduce the effort of the crew, and can greatly shorten the time required for the catch.

However, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 schematically shows a trap to which the trap lock and release device for automatic pitching is fastened according to an embodiment of the present invention.
Figure 2 schematically shows the trap of Figure 1 in a folded state.
Fig. 3 is a schematic cross-sectional side view of the locking and unlocking device of Fig. 1 in a locked state;
FIG. 4 is a schematic cross-sectional side view of a first fastener of the locking and unlocking device of FIG. 3 ;
FIG. 5 is a schematic cross-sectional side view of a second fastener of the locking and unlocking device of FIG. 3 ;
FIG. 6 is a plan view schematically illustrating a first fastener of the locking and unlocking device of FIG. 3 ;
FIG. 7 is a schematic plan view of a second fastener of the locking and unlocking device of FIG. 3 ;

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be implemented independently of each other, It may be possible to implement together in a related relationship.

Hereinafter, with reference to the accompanying drawings will be described with respect to the trap lock and release device for automatic pitching according to the present invention.

Referring to FIGS. 1 to 7 , the trap locking and unlocking device 10 for automatic pitching according to an embodiment of the present invention includes a first fixture 100 and a second fixture 200 .

The trap 20 includes a first annular frame 21 lifted by the rib line 30, a second annular frame 22 facing the first annular frame 21, and both ends of the first annular frame ( 21) and a spring frame 23 fixed to the second annular frame 22 and applying an elastic force to the first annular frame 21 and the second annular frame 22 in a direction spaced apart from each other, and the first annular frame 21 ), and a second annular frame 22 and a fishing net 24 surrounding the outer surface of the spring frame 23 . The trap 20 is connected to the bridle (not shown) by the bridle 30 and may be lifted or hoisted.

The first fixture 100 is fixed to the first annular frame 21 . The first fixture 100 may be disposed in two parts positioned opposite to each other. The first fixture 100 includes a first frame fixing part 110 , a first fixing pin 120 , a rotation guide part 130 , a first magnetic member receiving part 140 , and a first magnetic member ( 150) may be included.

The second fixture 200 is fixed to the second annular frame 22 . The second fixture 200 may be disposed in two parts located opposite to each other. The second fixture 200 includes a second frame fixing part 210 , a second fixing pin 220 , a second magnetic member receiving part 230 , a second magnetic member 240 , and a fastening protrusion 250 . ) may be included.

Each of the first fixture 100 and the second fixture 200 may be disposed at a position overlapping each other so as to contact each other when the first annular frame 21 and the second annular frame 22 are folded. The first fixture 100 and the second fixture 200 are the first magnetic member 150 and the second magnetic member in a folded state in which the first annular frame 21 and the second annular frame 22 are disposed adjacent to each other. (240) are fixed to each other by magnetic coupling. The first fixture 100 and the second fixture 200 are separated from each other as the magnetic coupling between the first magnetic member 150 and the second magnetic member 240 is released as tension is applied from the rib line 30 . .

The trap 20 is accommodated in a folded state, and is connected to the bridle pulled by a separate riding means by the bridle 30, and when the bristle is pulled by the throwing means, through the bristle 30 As the tension is transmitted, the trap 20 may be pitched to the fishing ground one by one. As the tension is transmitted from the line 30, the first fixture 100 and the second fixture 200 are separated from each other, so that the trap 20 in the folded state can be automatically pitched in an expanded state.

The first fixture 100 may be fixed to the first annular frame 21 by the first frame fixing part 110 surrounding a position of the first annular frame 21 . The first annular frame 21 is inserted to pass through the through hole formed in the first frame fixing part 110, and is fastened by passing through the first frame fixing part 110 and the first annular frame 21 in the lateral direction. The first fixture 100 may be more firmly fixed to the first annular frame 21 by the first fixing pin 120 .

The rotation guide unit 130 may be formed to extend from the first frame fixing unit 110 toward the second annular frame 22 . The rotation guide unit 130 may be integrally formed with the first frame fixing unit 110 . The rotation guide unit 130 may have an insertion groove 131 having a cylindrical shape and retracted toward the first annular frame 21 , into which the body of the first magnetic member accommodating unit 140 is inserted. A guide groove 132 having a ring shape on the inner surface of the insertion groove 131 and formed to be retracted outward so that the first magnetic member receiving part 140 rotates without departing from the rotation guide part 130 may be provided. can

The first magnetic member accommodating part 140 is provided with a body having an insertion hole 141 penetrated in a direction toward the second annular frame 22 in the center thereof, and has a cylindrical outer surface and an inner surface, It is formed to protrude outward from the outer surface and may include a rotation protrusion 142 having a ring shape. The body of the first magnetic member accommodating part 140 is inserted into the insertion groove 131 of the rotation guide part 130 and the rotation protrusion 142 is inserted into the guide groove 132 , whereby the first magnetic member accommodating part 140 is inserted into the guide groove 132 . ) can be rotated without departing from the rotation guide unit 130 .

The first magnetic member accommodating part 140 may include an adjusting screw 143 that is inserted and fastened from the outer surface of the body toward the center. The hairline 30 may be connected to the head portion of the adjustment screw 143 to transmit tension. When the tension is transmitted from the rib line 30 , torque is transmitted to the first magnetic member accommodating part 140 by the adjusting screw 143 , and the first magnetic member accommodating part 140 is rotated with respect to the rotation guide part 130 . can do. The adjusting screw 143 can adjust the torque applied to the first magnetic member accommodating part 140 by the tension from the rib line 30 because the fastening depth is adjustable within a predetermined range. When the restoring force by the spring frame 23 is relatively strong and a greater torque is required to rotate the first magnetic member receiving part 140, the adjustment screw 143 can be adjusted to be fastened less deeply, and conversely, the spring frame 23 When the restoring force by the , the first magnetic member accommodating part 140 can be rotated even with a small torque, the adjustment screw 143 can be adjusted to be more deeply fastened.

The second fixture 200 may be fixed to the second annular frame 22 by a second frame fixing part 210 surrounding a position of the second annular frame 22 . The second annular frame 22 is inserted into the through hole formed in the second frame fixing part 210 to pass, and the second frame fixing part 210 and the second annular frame 22 are penetrated in the lateral direction to be fastened. The second fastener 200 may be more firmly fixed to the second annular frame 22 by the second fixing pin 220 .

The second magnetic member accommodating part 230 may be formed to extend from the second frame fixing part 210 toward the first annular frame 21 . The second magnetic member accommodating part 230 may be integrally formed with the second frame fixing part 210 . The second magnetic member accommodating part 230 may be formed in a cylindrical shape.

The fastening protrusion 250 may be formed to protrude toward the first annular frame 21 from the center of the surface of the second magnetic member accommodating part 230 facing the first annular frame 21 . The fastening protrusion 250 is inserted into the insertion hole 141 of the first magnetic member receiving portion 140 when the trap 20 is in a folded state. When the first annular frame 21 and the second annular frame 22 are folded, the fastening protrusion 250 forms the insertion hole 141 as the first fastener 100 and the second fastener 200 come close to each other. ) is inserted into When the fastening protrusion 250 is inserted into the insertion hole 141, the first magnetic member accommodating part 140 and the second magnetic member accommodating part 230 come into contact with each other, so that the first magnetic member 150 demanded therein, respectively. and a magnetic coupling is created between the second magnetic member 240 . The first magnetic member accommodating part 140 and the second magnetic member accommodating part 230 in a state where the opposite surfaces of each of the first magnetic member accommodating part 140 and the second magnetic member accommodating part 230 are in contact with each other in a magnetic field generated from each of the first magnetic member 150 and the second magnetic member 240 . A force may be generated by this to maintain a contact state.

The first annular frame 21 side end of the fastening protrusion 250 has a support groove 133 formed to retreat from the center of the retracted surface of the insertion groove 131 of the rotation guide 130 to the first annular frame 21 side. can be inserted.

The fastening protrusion 250 may be inserted into the support groove 133 and the insertion hole 141 so that the protruding surface of the first annular frame 21 is seated on the retracted surface of the support groove 133 .

The fastening protrusion 250 may include a support protrusion 251 formed by protruding laterally two portions located opposite to each other on the first axis x among the side surfaces of the end of the first annular frame 21 . The support protrusion 251 is supported by the first magnetic member accommodating part 140 according to the rotation of the first magnetic member accommodating part 140 , or two parts located opposite to each other among the inner surfaces of the insertion hole 141 . It is detachable from the first magnetic member accommodating part 140 along the fastening groove 144 formed by retracting laterally.

The fastening groove 144 is a second perpendicular to the first axis (x) in a locked state in which the first fixture 100 and the second fixture 200 are fixed to each other according to the rotation of the first magnetic member accommodating part 140 . It is disposed on the axis y, and the first fastener 100 and the second fastener 200 may be arranged on the first axis x in a release state in which they are separable from each other.

As the first magnetic member accommodating part 140 rotates so that the fastening groove 144 is positioned on the second axis y in the locked state, the support protrusion 251 is supported by the first magnetic member accommodating part 140 . In the released state, as the first magnetic member accommodating part 140 rotates so that the fastening groove 144 is positioned on the first axis (x), the support protrusion 251 moves from the first magnetic member accommodating part 140 . It is not supported and may be separated from the first magnetic member accommodating part 140 along the fastening groove 144 .

The first magnetic member accommodating part 140 may accommodate the two first magnetic members 150 in two portions located opposite to each other among the outer portions of the insertion hole 141 . The second magnetic member accommodating part 230 may accommodate the two second magnetic members 240 in two portions located opposite to each other among the outer portions.

In the locked state, the two first magnetic members 150 and the two second magnetic members 240 may be disposed on the same axis to generate an attractive force by magnetic coupling. In the released state, the two first magnetic members 150 and the two second magnetic members 240 are disposed on axes perpendicular to each other as the first magnetic member accommodating part 140 rotates to release the magnetic coupling. can The magnetic coupling between the first magnetic member 150 and the second magnetic member 240 may be released as the first magnetic member accommodating part 140 rotates by the tension from the eyelet 30 . In the released state, each axis on which each of the first magnetic member 150 and the second magnetic member 240 is disposed is not perpendicular to each other and is disposed on an axis forming another different angle from which the magnetic coupling between the two can be released. may be

Meanwhile, although not illustrated, each magnetic member may be disposed in various quantities and angles. The plurality of first magnetic members and the plurality of second magnetic members may be arranged in a circle with a predetermined distance therebetween, so that magnetic coupling may be formed or released when the first magnetic member accommodating part rotates. In addition, when the magnetic coupling is generated by the rotation of the first magnetic member accommodating part by utilizing the polarity of the magnetic member, the first magnetic member and the second magnetic member are arranged to have a polarity to form an attractive force with each other, and when the magnetic coupling is released Since the first magnetic member and the second magnetic member are disposed to have polarities that repel each other, a strong coupling force according to a locked state and rapid separation according to a released state may be possible. To this end, the first magnetic member and the second magnetic member may each include a plurality of magnetic members having different polarities facing each other.

As described above, the trap 20 is to be accommodated in a folded state when the first fixture 100 and the second fixture 200 are in the locked state by the trap locking device 10 according to an embodiment of the present invention. As the ship moves, the first fixture 100 and the second fixture ( 100 ) and the second fixture ( As the 200) is released, it can be pitched to the fishing ground in a state in which the trap 20 is automatically expanded by the restoring force of the spring frame 23.

The tension transmitted through the rib line 30 is sufficiently greater than the friction force between the support protrusion 251 and the first magnetic member accommodating part 140 according to the restoring force of the spring frame 23, so that the 1 The magnetic member accommodating part 140 automatically rotates to adjust the elasticity of the spring frame 23 so that the first fixture 100 and the second fixture 200 can be in a released state, and the support protrusion is provided through a lubricant or the like. It is preferable to adjust the friction characteristics between the 251 and the first magnetic member receiving portion 140 . In addition, it is preferable to adjust the magnetic force characteristics of each magnetic member so that the magnetic coupling between the first magnetic member 150 and the second magnetic member 240 can be released by the tension transmitted through the rib line 30 . .

In this way, by releasing the support and magnetic coupling between the first fixture 100 and the second fixture 200 using the tension of the rib line 30 that occurs naturally during the casting, the trap 20 in the folded state automatically expands. This can reduce the effort of the crew who spreads the pots to be thrown one by one, and the time required for the pots 20 to win can be greatly reduced.

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: first fixture
110: first frame fixing part
120: first fixing pin
130: rotation guide unit
131: insertion groove
132: guide home
133: support groove
140: first magnetic member receiving part
141: insertion hole
142: rotation protrusion
143: adjusting screw
144: fastening groove
150: first magnetic member
200: second fixture
210: second frame fixing part
220: second fixing pin
230: second magnetic member receiving part
240: second magnetic member
250: fastening protrusion
251: support protrusion
10: lock and unlock device
20: trap
21: first annular frame
22: second annular frame
23: spring frame
24: fishing net
30: line

Claims (5)

A first annular frame lifted by a rib, a second annular frame facing the first annular frame, both ends fixed to the first annular frame and the second annular frame, the first annular frame and the A spring frame for applying an elastic force to the second annular frame in a direction spaced apart from each other, and a fishing net surrounding an outer surface of the first annular frame, the second annular frame and the spring frame, locking and releasing the trap for automatic riding As a device,
a first fixture secured to the first annular frame and having a first magnetic member; and
a second fixture fixed to the second annular frame and having a second magnetic member magnetically engageable with the first magnetic member;
The first fixture and the second fixture are fixed to each other by magnetic coupling of the first magnetic member and the second magnetic member in a folded state in which the first annular frame and the second annular frame are disposed adjacent to each other, A trap lock and release device for automatic pitching, characterized in that the magnetic coupling between the first magnetic member and the second magnetic member is released as tension is applied from the rib line and are separated from each other.
According to claim 1,
The first fixture,
a first frame fixing part wrapped around a position of the first annular frame and fixed;
a first fixing pin fastened through the first frame fixing part and the first annular frame;
a rotation guide part extending from the first frame fixing part to the second annular frame side and having an insertion groove retracted toward the first annular frame, and a guide groove formed to be retracted outward from the inner surface of the insertion groove; and
A rotation protrusion that is inserted into the insertion groove of the rotation guide and protruded from the outer surface is inserted into the guide groove and rotatably connected to the rotation guide, accommodates the first magnetic member therein, and tension from the rib line a first magnetic member accommodating part which rotates as this is applied and has an insertion hole formed through the center in a direction toward the second annular frame;
includes,
The second fixture,
a second frame fixing part wrapped around a position of the second annular frame and fixed;
a second fixing pin fastened through the second frame fixing part and the second annular frame;
a second magnetic member accommodating part extending from the second frame fixing part toward the first annular frame and accommodating the second magnetic member therein; and
a fastening protrusion formed to protrude from a center of a surface of the second magnetic member accommodating part facing the first annular frame and inserted into the insertion hole of the first magnetic member accommodating part;
including,
As the first fixture and the second fixture approach, the fastening protrusion is inserted into the insertion hole and the first magnetic member accommodating part and the second magnetic member accommodating part come into contact with each other, so that the first magnetic member and the second magnetic member are brought into contact with each other. A magnetic bond is created between the members,
As the first magnetic member accommodating part rotates by the tension from the liner, the magnetic coupling between the first magnetic member and the second magnetic member is released.
3. The method of claim 2,
The rotation guide part includes a support groove formed to be retracted from the center of the retracted surface of the insertion groove toward the first annular frame,
The fastening protrusion includes a support protrusion formed by protruding laterally two parts located opposite to each other on the first axis among the side surfaces of the first annular frame side end,
The first magnetic member accommodating part has a fastening groove formed by retracting laterally two parts located opposite to each other among the inner surfaces of the insertion hole,
As the first magnetic member accommodating part rotates so that the fastening groove is positioned on a second axis perpendicular to the first axis in a locked state in which the first fixture and the second fixture are fixed to each other, the support protrusion is formed in the second 1 is supported by the magnetic member accommodating part, and as the first magnetic member accommodating part rotates so that the fastening groove is positioned on the first shaft in a release state in which the first and second fasteners are separable from each other, the support A trap lock and release device for automatic pitching, characterized in that the protrusion is detachable from the first magnetic member accommodating part along the fastening groove.
4. The method of claim 3,
The first magnetic member accommodating portion includes two first magnetic members accommodated in two portions located opposite to each other among the outer portions of the insertion hole,
The second magnetic member accommodating part includes two second magnetic members accommodated in two parts located opposite to each other among the outer parts,
The two first magnetic members and the two second magnetic members are disposed on the same axis in the locked state, and are disposed on axes perpendicular to each other in the unlocked state. release device.
5. The method of claim 4,
The first magnetic member accommodating part is fastened from the outer surface to the center direction, the fastening depth is adjustable within a predetermined range, and an adjustment screw through which the ribbed is connected to the head so as to transmit tension is characterized in that it is provided. Traps locking and unlocking device for automatic win-win.

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