JP2010115180A - Underwater fishing light and connecting tool of power supply cable of underwater fishing light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underwater fishing light having an improved water stop function of a connection part between a power supply cable and a lighting tool. <P>SOLUTION: A receptacle 11 having the water stop function is attached to the wall 503a of the housing of the lighting tool of the underwater fishing light, and a plug connector 12 having the water stop function is attached to the tip end of the power supply cable 3 to connect the plug connector 12 to the receptacle 11, so that the power supply cable 3 is connected to the lighting tool. The connection between the plug connector 12 and the receptacle 11 is assured by connecting both with a locknut 13. The mechanical strength of the receptacle 11 is enhanced by making the shell 15 of the receptacle 11 out of a corrosion-resistant metal. The water stop function of the plug connector is improved by making the shell 35 of the plug connector 12 out of insulating rubber that is integrally formed on a plug side contact conductor and the power supply cable. The water stop part is protected by making a protective sleeve 37 composed of the corrosion-resistant metal engage with the outer circumference of the shell 35 of the plug connector. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an underwater fish lamp and a power cable connector for an underwater fish lamp used for connecting the power cable to the underwater fish lamp.

  In nighttime fishing, fish lamps are used to collect fish. As the fish collection light, there are an on-board fish collection light that is used by being fixed on a fishing boat, and an underwater fish collection light that is used by being put into the water. As shown in Patent Document 1, the underwater fish collection lamp is composed of a power cable and a lamp connected to the tip of the power cable. The lamp is inserted into the water from a fishing boat to emit light. It aims at collecting fish.

In the conventional underwater fish collection lamp, as disclosed in Patent Document 1, a cable introduction part for penetrating the power cable in a liquid-tight manner is provided at the upper end of the housing of the lamp, and the tip of the power cable is directly connected to the cable. The lead-through was introduced into the wiring chamber of the liquid-tight holding structure in the housing, and the core wire of the power cable was connected to the power feeding portion to the light emitter in the wiring chamber.
JP 63-309128 A

  In the conventional fish collecting light, the tip of the power cable is directly introduced into the housing through the cable introducing portion provided in the upper portion of the housing of the lamp. It is not easy to maintain the water stop function of the connection part), and external power is repeatedly applied to the introduction part of the power cable due to the swinging of the lamp in the sea, or the fishing light contacts the fishing net and the connection between the power cable and the lamp When a large external force is applied to the portion, the water stop function of the cable introduction portion is impaired, and water may enter the housing of the lamp from the cable introduction portion. In the unlikely event that water enters the lamp housing from the power cable introduction portion, the lamp will be damaged, and it will be necessary to replace the entire lamp, which is uneconomical.

  Recently, an underwater fish lamp using a light emitting diode having a long life as a light emitter has come to be used. Since the lamp of a fish lamp using a light emitting diode is expensive, it is necessary to avoid the situation that the entire lamp must be replaced at an early stage as much as possible. Further, in order to take advantage of the feature of the light-emitting diode that has a long life, it is desirable to make the life of the lamp as long as possible.

  The object of the present invention is to improve the water stopping performance and the robustness of the connection portion between the power cable and the lamp, prevent water from entering the lamp housing, and extend the life of the lamp. An object of the present invention is to provide an underwater fish lamp and a power cable connector for an underwater fish lamp used to connect the underwater fish lamp to a lamp.

  The present invention includes a lamp 5 having a housing 501 holding a light emitter, and a distal end portion electrically connected to power supply portions 511a and 512a to the light emitter in a sealed wiring chamber provided in the housing of the lamp. An underwater fish-collecting lamp that is provided with a power cable 3 and that is used with a lamp inserted into the water is a target.

  In the present invention, in order to connect the power cable 3 to the lamp, the power cable connector 10 including the receptacle 11 attached to the housing of the lamp and the plug connector 12 attached to the tip of the power cable is used.

  The receptacle 11 of the power cable connector according to the present invention is made of a corrosion-resistant metal and has a male screw portion 15b formed on the outer periphery of the front end portion and a plug insertion hole 15g formed on the inner side of the male screw portion. Has a metal receptacle shell 15 that passes through the portion of the lamp housing 501 facing the wiring chamber and is connected to the housing in a liquid-tight manner, and has receptacle contacts 21a and 22a at the tip, and is electrically connected to a power feeding portion for the light emitter. Receptacle-side contact conductors 21 and 22 housed in the receptacle shell having terminal portions 21b and 22b connected to each other at the rear end, and a receptacle for preventing water from flowing through the inside of the receptacle shell 15 It has a side water stop part.

  The plug connector 12 has plug contacts 31a and 32a connected to the receptacle contacts at the tip, and plug-side contact conductors 31 and 32 connected to the core wire of the power cable 3 at the rear end at the tip of the power cable. The plug-side contact conductor and the portion near the tip of the power cable 3 are formed integrally with the plug-side contact conductors 31 and 32 and the power cable 3 so that the tip is in the plug insertion hole 15g of the receptacle shell 15. Plug shell made of insulating rubber, which is formed so as to be press-fitted into the outer periphery, and has a flange portion 35c formed on the outer periphery when the tip portion is press-fitted into the plug insertion hole 15g. 35, a plug-side water blocking portion that prevents water from flowing through the plug shell, and a flange portion 37a at the tip portion. And a protective sleeve 37 made of a corrosion-resistant metal fitted on the outer periphery of the plug shell 35 with the flange portion in contact with the flange portion 35c on the outer periphery of the plug shell. Plug contacts 31a and 32a are connected to receptacle contacts 21a and 22a in a state where 35a is press-fitted into the plug insertion hole of the receptacle shell.

  The power cable connector 10 is also fitted to the outer periphery of the protective sleeve 37 and is screwed into the male screw portion 15b on the outer periphery of the front end of the receptacle shell 15 so that the rubber of the plug shell is passed through the flange portion 37a of the protective sleeve. A lock nut 13 made of a corrosion-resistant metal that fastens the flange portion 35c made of the metal to the front end surface of the receptacle shell 15 is provided, and the plug connector 12 and the receptacle 11 are held in a liquid-tight state by the lock nut.

  In a preferred aspect of the present invention, the receptacle 11 has first and second male screw portions 15b and 15c having outer diameters closer to the front end and a portion closer to the rear end than the portions closer to the center, respectively. A cylindrical receptacle shell 15 having a plug insertion hole 15g formed inside the first male screw portion, a contact assembly 16 accommodated in the receptacle shell, and a second male screw portion 15c are fitted on the outer periphery. A packing 18 abutted on a step formed between the second male threaded portion and the central portion of the receptacle shell 15, and a shell screwed into the first male threaded portion 15b And a fixing nut 17.

  In this case, the contact assembly 16 has receptacle contacts 21a and 22a at the front end portion and terminal portions 21b and 22b electrically connected to the power feeding portion to the light emitter at the rear end portion and arranged in parallel to each other. The pair of receptacle-side contact conductors 21 and 22, the solid insulating member 25 molded in a state of covering the intermediate portion of the pair of receptacle-side contact conductors 21 and 22, and the outer periphery of the insulating member And an insulating rubber sleeve 26 bonded to the insulating member, and the insulating member 25 is press-fitted into the inner periphery of the receptacle shell 15 via the rubber sleeve 26 so that the rubber sleeve 26 is received in the receptacle. By being adhered to the inner periphery of the shell 15, it is held in the receptacle shell.

  The receptacle 11 is arranged in a state where the second male screw portion 15c of the receptacle shell passes through a portion facing the wiring chamber of the housing of the lamp, and is a nut for fixing the shell screwed into the second male screw portion 15c. 17 is fastened to the housing of the lamp.

  The plug connector 12 has a pair of plug contacts 31a and 32a connected to the pair of receptacle contacts 21a and 22a at the tip, and the rear end is the tip of the power cable and a pair of core wires of the power cable. A pair of plug-side contact conductors 31, 32 connected to each other, and a pair of plug-side contact conductors 31, 32 in a state where the pair of plug-side contact conductors and a portion near the tip of the power cable 3 are covered. It is formed integrally with the power cable 3 so that its tip can be press-fitted into the plug insertion hole 15g of the receptacle shell 15, and when the tip is press-fitted into the plug insertion hole 15g, the receptacle shell 15 A plug shell 35 made of insulating rubber having a flange portion 35c abutting against the tip surface formed on the outer periphery, and a plug-side contact guide Adhesive layers 41 and 41 'for adhering at least a part of the outer periphery of the parts 31 and 32 and a part of the power cable 3 located in the plug shell 35 to the plug shell over the entire periphery, and a flange at the tip And a protective sleeve 37 made of a corrosion-resistant metal fitted on the outer periphery of the plug shell 35 in a state where the flange portion is in contact with the flange portion 35c on the outer periphery of the plug shell 35. The pair of plug contacts 31a and 32a are connected to the pair of receptacle contacts 21a and 22a, respectively, when the tip 35a of the 35 is press-fitted into the plug insertion hole 15g of the receptacle shell 15.

  In a preferred aspect of the present invention, the flange of the plug shell 35 is fitted to the outer periphery of the protective sleeve 37 and screwed into the first male screw portion 15 b of the receptacle shell 15 via the flange portion 37 a of the protective sleeve 37. A lock nut 13 is provided to fasten the portion 35 c to the front end surface side of the receptacle shell 15. By tightening the lock nut 13, a flange portion of the plug shell is provided between the flange portion 37 a of the protective sleeve 37 and the front end surface of the receptacle shell 15. The plug shell 35 and the receptacle shell 15 are coupled together in a state where 35c is compressed.

  The receptacle shell 15, the shell fixing nut 17, the protective sleeve 37, and the lock nut 13 are formed of a corrosion-resistant metal such as stainless steel. Further, the insulating member 25 and the rubber sleeve 26 bonded to the insulating member 25 and the receptacle shell 15 constitute a receptacle-side water stop portion that prevents water from flowing through the inside of the receptacle shell 15. The adhesive layer 41, 41 'provided on the plug constitutes a plug-side water stop portion that prevents water from flowing through the inside of the plug shell.

  One of the receptacle contact and the plug contact is constituted by a male contact and the other is constituted by a female contact. In a preferred embodiment of the present invention, the receptacle contact is constituted by a male contact and the plug contact is a female contact. Consists of.

  As described above, in the present invention, since both the plug connector 12 and the receptacle 11 constituting the power cable connector have a water stop function, the power cable 3 is stopped in two stages by the plug connector 12 and the receptacle 11. And connected to the housing of the lamp. In particular, the plug shell 35 is made of rubber, and is integrally formed with the plug-side contact conductors 31 and 32 and the power cable 3 in a state where the plug-side contact conductors 31 and 32 and a portion near the tip of the power cable 3 are covered. And since the water stop part which blocks | circulates the water is provided in the inside, water stop performance can be improved. Further, since a protective sleeve 37 made of a corrosion-resistant metal is fitted on the outer periphery of the plug shell made of rubber, and the water-stop portion inside the plug shell is protected by this protective sleeve, the reliability of the water-stop function of the plug connector is reliable. The water stopping function can be maintained over a long period of time.

  In addition, since the receptacle has a robust structure in which a receptacle contact is accommodated in a shell made of a corrosion-resistant metal and a water stop portion is provided, the receptacle will not be damaged even if it comes into contact with a fishing net in the sea. Its function can be maintained.

  Therefore, according to the present invention, the water stop function of the connection portion between the power cable and the lamp can be maintained over a long period of time, thereby extending the life of the lamp. Also, if the plug shell water-stop function is lost due to deterioration of the rubber constituting the plug shell, simply replace the power cable with the plug connector at the tip without replacing the lamp. , The function of the fishlight can be restored. Therefore, since it is not necessary to replace the expensive lamp itself, the life of the lamp can be extended and the economy can be improved.

  As described above, according to the present invention, the power cable connecting tool including the receptacle having a water stop function and the plug connector is provided, and the power cable is connected to the lamp by the connecting tool. At the connection between the lamp and the lamp, water can be stopped in two stages by the plug connector and the receptacle. In particular, the plug shell is made of rubber and is integrally formed with the plug-side contact conductor and the power cable in a state where the plug-side contact conductor and the portion near the tip of the power cable are covered. Water performance can be improved and water can be reliably prevented from entering the receptacle. In addition, a protective sleeve made of corrosion-resistant metal is fitted on the outer periphery of the plug shell made of rubber, and the water-stop portion inside the plug shell is protected from external force by this protective sleeve. Reliability can be improved and the water stop function can be maintained over a long period of time.

  In addition, since the receptacle contacts the receptacle contacts in a shell made of a corrosion-resistant metal and has a strong structure against external forces, the function can be maintained for a long period of time.

  Therefore, according to the present invention, the water stop function of the connection portion between the power cable and the lamp can be maintained over a long period of time, thereby extending the life of the lamp. In the unlikely event that the rubber constituting the plug shell deteriorates, the function of the fish collection lamp can be recovered by simply replacing the power cable with the plug connector attached to the tip without replacing the lamp. Since it is not necessary to replace the lamp itself, the economy can be improved.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 schematically shows a state in use of an underwater fish lamp according to the present invention. In the figure, 1 is a fishing boat floating on the sea surface 2, 3 is a power cable connected at the rear end to a power source 4 provided on the fishing boat 1, and 5 is attached to the tip of the power cable 3 and thrown into the sea. The underwater fish collection lamp 6 is composed of the power cable 3 and the lamp 5.

  As shown in FIG. 2, the lamp 5 used in this embodiment includes a housing 501 made of a corrosion-resistant metal. The illustrated housing 501 includes a housing main body 502 formed in a rectangular parallelepiped shape, and a square frustum-shaped roof portion 503 detachably connected to the upper portion of the housing main body 502. A ceiling plate 504 is attached between them so as to partition the two. A window portion 505 is formed in each side wall portion and bottom wall portion of the housing main body 502, and a transparent plate 506 such as a glass plate is attached so as to liquid-tightly close each window portion 505.

  The housing body 502 accommodates a substrate 508 on which a large number of light emitting diodes 507 are attached, positioned inside each window portion 505. Each substrate 508 is supported with respect to the housing body 502 by appropriate means. A bushing 509 is attached while penetrating the ceiling plate 504, and a pair of terminal conductors 511 and 512 are attached through the bushing 509. The terminal conductors 511 and 512 are connected to the power supply terminal of each substrate 508 through the wiring 510 in the housing body 502. In the present embodiment, the end portions protruding into the roof portion 503 of the terminal conductors 511 and 512 serve as power feeding portions 511a and 512a to the light emitter (light emitting diode in the present embodiment). A top portion of the roof portion 503 of the housing is a power cable connection wall portion 503a having a flat wall surface, and the power cable connector 10 according to the present invention is attached to the wall portion 503a.

  In the present embodiment, the space inside the roof portion 503 is a wiring chamber 513 that connects the power cable 3 to the power feeding portion to the light emitter. The housing 501 has a completely sealed structure so that water does not enter inside, and the wiring chamber 513 also has a sealed structure with respect to the outside.

  As shown in FIG. 3, the power cable connector 10 according to the present invention includes a receptacle 11 fixed to the housing 501 of the lamp 5 and a plug attached to the tip of the power cable 3 and connected to the receptacle 11. The connector 12 includes a lock nut 13 that holds the receptacle 11 and the plug connector 12 in a coupled state.

  4 (A) to 4 (D), 5 and 6, each part of the receptacle 11 is shown in detail. The receptacle 11 used in the present embodiment includes a receptacle shell 15 made of a corrosion-resistant metal such as stainless steel, a contact assembly 16 held in the receptacle shell 15, a nut 17 for fixing the shell (see FIG. 6), and rubber. And a ring-shaped packing 18 (see FIG. 3).

  As shown in FIG. 4, the receptacle shell 15 is formed in a cylindrical shape, and the outer periphery of the portion near the front end and the portion near the rear end is smaller in diameter than the portion 15a near the center. 2 male screw portions 15b and 15c. In the present embodiment, the outer diameter of the first male screw portion 15b is set larger than the outer diameter of the second male screw portion 15c.

  The second male screw portion 15c is a screw portion used to attach the receptacle 11 to the power cable connecting wall portion (wall portion facing the wiring chamber) 503a of the lamp housing 501. One of the outer circumferences of the screw portion 15c is used. The flat surface 15d is formed in a part of the outer periphery of the screw part 15c by cutting the part at right angles to the radial direction. By forming the flat surface 15d, the cross-sectional shape of the screw portion 15c is formed in a substantially D shape.

  A mounting hole 515 (see FIG. 3) having the same cross-sectional shape (substantially D-shaped cross-sectional shape) as the screw portion 15c is formed in the power cable connecting wall portion 503a of the housing 501 of the lamp 5, and the screw portion 15c is fitted in the attachment hole 515 in the state stopped. As shown in FIG. 6, the shell fixing nut 17 is composed of a hexagonal nut that is made of the same metal material as the corrosion-resistant metal constituting the receptacle shell 15, and the second male screw portion of the receptacle shell 15. 15c is formed so as to be screwed.

  An enlarged diameter portion 15e into which the contact assembly 16 is fitted is formed on the inner periphery near the rear end portion of the receptacle shell 15, and the contact between the enlarged diameter portion 15e and the portion near the front end of the receptacle shell 15 is formed. A step portion 15f (see FIG. 4B) for positioning the assembly 16 in the axial direction is formed. Further, a plug insertion hole 15g for inserting the tip end portion of the plug connector 12 is formed inside the portion near the front end of the receptacle shell 15 (inside the first male screw portion 15b), and the inner periphery of the plug insertion hole 15g is formed. A key 15h (see FIG. 4B) extending in the axial direction of the receptacle shell 15 is formed integrally with a part of the key. The key 15 h is used to restrict the correspondence between the contacts of the plug connector 12 and the receptacle 11 when the plug connector 12 is connected to the receptacle 11.

  As shown in FIGS. 4A to 4D, the contact assembly 16 covers a pair of receptacle-side contact conductors 21 and 22 arranged in parallel to each other and an intermediate portion of these contact conductors. In this state, a solid insulating member 25 integrally formed with both contact conductors 21 and 22 and an insulating rubber sleeve 26 fitted to the outer periphery of the insulating member 25 are provided.

  Each of the pair of receptacle-side contact conductors 21, 22 has male receptacle contacts 21 a, 22 a at the tip, and terminal portions that are electrically connected to power supply portions 511 a, 512 a to the light emitter of the lamp 5, respectively. 21b and 21b are provided at the rear end portions, and intermediate portions between the receptacle contacts 21a and 22a and the terminal portions 21b and 21b are covered with an insulating member 25.

  The insulating member 25 is formed in a columnar shape, and a groove 25a is provided around the outer periphery thereof. The rubber sleeve 26 is formed in a cylindrical shape as shown in FIG. 5, and a protrusion 26 a that fits into the outer peripheral groove 25 a of the insulating member 25 is provided around the inner periphery thereof. The rubber sleeve 26 is tightly fitted to the outer periphery of the insulating member 25 in a state where the protrusion 26 a is fitted in the groove 25 a on the outer periphery of the insulating member 25, and the entire inner peripheral surface thereof is bonded by the adhesive 27 to the insulating member 25. It is adhered to the outer peripheral surface of.

  The contact assembly 16 is tightly fitted to the inner periphery of the enlarged diameter portion 15e of the receptacle shell 15, and the entire outer peripheral surface of the rubber sleeve 26 is bonded to the inner peripheral surface of the enlarged diameter portion 15e with an adhesive 27 '. . In the present embodiment, a retaining ring 28 is fitted in a groove formed on the inner periphery of the receptacle shell 15 near the opening end of the enlarged diameter portion 15 e, and this retaining ring is attached to the axial end of the contact assembly 16. The contact assembly 16 is pressed against the step portion 15f.

  The packing 18 is fitted to the outer periphery of the second male screw portion 15c of the receptacle shell 15, and is formed with a step portion 15i (between the second male screw portion 15c and the portion 15a near the center of the receptacle shell). 4A and 4D).

  As shown in FIG. 3, the receptacle 11 is arranged in a state in which the second male screw portion 15 c of the receptacle shell 15 is fitted in an attachment hole 515 provided in the wall portion 503 a facing the wiring chamber 513 of the housing 15. Then, the shell fixing nut 17 screwed into the second male screw portion 15c is tightened to fasten the housing 501. The liquid tightness of the connecting portion between the receptacle 11 and the lamp 5 is maintained by the compressed packing 18 interposed between the wall portion 503 a of the lamp housing and the portion near the center of the receptacle shell 15.

  In this embodiment, the insulating member 25 and the rubber sleeve 26 bonded to both the insulating member 25 and the receptacle shell 15 by the adhesives 27 and 27 ′ prevent water from flowing through the inside of the receptacle shell 15. A receptacle-side water stop is formed.

  Referring to FIGS. 7A to 7D, the structure of the plug connector 12 is shown in detail. The illustrated plug connector 12 includes a pair of plug-side contact conductors 31 and 32 connected to the tip of the power cable 3, and a plug shell 35 made of insulating rubber covering these contact conductors and the tip of the power cable 3. And a metal protective sleeve 37 fitted to the outer periphery of the plug shell 35.

  As shown in FIG. 8, the pair of plug-side contact conductors 31, 32 has a pair of female plug contacts 31 a, 32 a connected to the pair of receptacle contacts 21, 22, respectively. In addition, crimp terminal portions 31b and 32b are provided at the rear end, and the crimp terminal portions 31b and 32b at the rear end are connected to the pair of core wires 301 and 302 of the power cable at the distal end of the power cable 3, respectively. ing. Between the plug contacts 31a, 32a and the crimp terminal portions 31b, 32b of the pair of plug-side contact conductors 31, 32, the outer diameters of the plug contacts 31a, 32a and the outer diameters of the crimp terminal portions 31b, 32b Small diameter portions 31c and 32c having a small outer diameter are also formed.

  The plug shell 35 is connected to the pair of plug-side contact conductors 31 and 32 and the power cable 3 in a state of covering the pair of plug-side contact conductors 31 and 32 and the outer shell 303 near the tip of the power cable 3. It is molded integrally. The distal end portion 35a of the plug shell 35 is formed so as to be press-fit into the inner periphery (inside the plug insertion hole 15g) of the receptacle shell 11, and the outer periphery of the portion closer to the distal end of the distal end portion 35a of the plug shell. In order to facilitate press-fitting, a taper is attached in such a direction that the diameter decreases toward the tip. A key groove 35h (see FIG. 7A) into which a key 15h provided on the receptacle shell 15 is fitted is formed on the outer periphery of the distal end portion 35a of the plug shell.

  Contact receiving holes 35b1 and 35b2 for receiving male receptacle contacts 21 and 22 respectively connected to female plug contacts 31a and 32a are provided inside the tip portion 35a of the plug shell. The plug shell is provided in an open state at the distal end surface of the distal end portion 35a. The plug contacts 31a and 32a are provided in a state in which the opening portions of the respective tips are opened to the outside through the contact receiving holes 35b1 and 35b2, and the plug of the receptacle shell is inserted into the key groove 35h of the tip portion 35a of the plug shell 35. When the key 15h in the insertion hole 15g is fitted and the distal end portion 35a is press-fitted into the plug insertion hole 15g of the receptacle 11, the pair of plug contacts 31a and 32a are respectively connected to the pair of receptacle contacts 21a and 22a. Configured to be connected.

  Formed on the outer periphery of the plug shell 35 is a collar portion 35c that comes into contact with the distal end surface of the receptacle shell 15 when the distal end portion 35a is press-fitted into the plug insertion hole 15g of the receptacle shell 15. The axial length of the tip 35a from the flange portion 35c of the plug shell is set slightly shorter than the axial dimension (depth) of the plug insertion hole 15g of the receptacle shell 15, and the tip of the plug shell When the flange 35a is inserted into the plug insertion hole 15g of the receptacle shell to bring the collar portion 35c into contact with the distal end surface of the receptacle shell, the contact set of the distal end surface of the plug shell 35a and the receptacle 11 A gap g (see FIG. 3) is formed between the solid end 16 and the axial end surface (bottom surface of the plug insertion hole) on the plug insertion hole 15g side.

  Further, at least a part of the outer periphery of the plug-side contact conductors 31 and 32 (in the illustrated example, the outer periphery of the crimp terminal portions 31b and 32b) and the outer periphery of the portion located in the plug shell 35 at the distal end of the power cable 3 are all provided. Adhesive layers 41 and 41 ′ that adhere to the plug shell 35 are formed over the circumference, and these adhesive layers constitute a plug-side water stop portion that prevents water from flowing through the inside of the plug shell 35. ing.

  The rear end portion 35d of the plug shell 35 has a tapered portion 35d1 formed so that its diameter gradually decreases toward the power cable 3 side, and a rear end portion side of the power cable further from the end portion on the small diameter side of the tapered portion 35d1. It is formed in a shape integrally having an extended portion 35d2 that is extended. In order to reliably prevent water from entering the plug shell 35, the length of the extension 35d2 is set sufficiently long, and the inner surface thereof is integrated with the outer skin of the power cable 3 by bonding or fusion. It is preferable to keep it.

  The protective sleeve 37 is made of the same corrosion-resistant metal (stainless steel in the present embodiment) as the metal constituting the receptacle shell 15 as shown in FIGS. The illustrated protective sleeve 37 is formed of a cylindrical body having an inner diameter that fits on the outer periphery of the plug shell 35 without a gap, and is fitted on the outer periphery of a portion on the rear end side of the flange portion 35 c of the plug shell 35. . A flange portion 37 a is formed at the distal end portion of the protective sleeve 37, and the flange portion 37 a is in contact with the flange portion 35 c on the outer periphery of the plug shell 35. As shown in the drawing, the protective sleeve 37 preferably has such a length that the end opposite to the flange portion 37 a reaches the vicinity of the tip of the outer shell 303 of the power cable 3.

  In the illustrated example, the outer diameter of the portion of the plug shell 35 on the rear end side of the portion where the protective sleeve 37 is fitted is set slightly larger than the outer diameter of the portion where the protective sleeve 37 is fitted. Thus, the protective sleeve 37 is positioned in the axial direction by a step 35e formed on the outer periphery of the plug shell due to the difference in the outer diameter of the plug shell 35.

  The lock nut 13 is configured as shown in FIGS. 10 (A) and 10 (B). The illustrated lock nut 13 is formed by forming a through hole 13b into which a protective sleeve 37 is fitted at the bottom of a hexagonal cap nut having a female screw portion 13a screwed into a second male screw portion 15b of the receptacle shell 15. . The periphery of the opening on the female screw portion 13a side of the through hole 13b of the lock nut 13 is a fastening seat portion 13c, and the lock nut 13 is screwed into the second male screw portion 15b of the receptacle shell 15 and tightened. At this time, the fastening seat portion 13 c comes into contact with the flange portion 37 a of the protective sleeve 37, and the flange portion 37 a is fastened to the front end surface side of the receptacle shell 11. The lock nut 13 is formed of the same metal material (stainless steel in the present embodiment) as the corrosion-resistant metal constituting the receptacle shell 15.

  As shown in FIG. 2, in the underwater fish lamp 6 of the present embodiment, the terminal portions 21 b and 22 b of the contact conductors 21 and 22 of the receptacle shell 11 are connected in the wiring chamber 513 in the housing 501 of the lamp 5. 41 and 42 are connected to the power supply portions 511a and 512a of the lamp. A key groove 35h (see FIG. 7A) provided in the tip 35a of the shell 35 of the plug connector 12 attached integrally to the tip of the power cable 3 is provided in the plug insertion hole 15g of the receptacle shell 15. The plug contacts 31a and 32a are brought into contact with the receptacle contacts 21a and 22a by press-fitting the tip 35a of the plug shell 35 into the plug insertion hole 15g in accordance with the key 15h. Thereafter, the lock nut 13 is screwed into the first male threaded portion 15b of the receptacle shell and tightened to tighten the flange portion 37a of the protective sleeve 37 and the flange portion 35c of the plug shell 35 between the front end surface of the receptacle shell 15. Is held in a compressed state to maintain the liquid tightness of the connecting portion between the plug connector 12 and the receptacle 11.

  As described above, the power cable 3 is provided by providing the power cable connector 10 including the receptacle 11 and the plug connector 12 having a water stop function and the lock nut 13 for maintaining the liquid tightness of these connecting portions. If the power cable 3 is connected to the lamp 5 via the power cable connector 10, the power cable 3 can be stopped in two stages by the plug connector 12 and the receptacle 11 and connected to the lamp 5. The water stop of the connection part with the lamp 5 can be performed reliably.

  In particular, the plug shell 35 is made of rubber, and is integrally formed with the plug contact and the power cable in a state where the plug-side contact conductor and the portion near the tip of the power cable are covered. Since the water stop part which becomes is provided, water stop performance can be improved. Further, a protective sleeve 37 made of a corrosion-resistant metal is fitted on the outer periphery of the plug shell 35 made of rubber, and the water stop portion inside the plug shell 35 is protected from external force by the protective sleeve, so that the plug connector 12 The reliability of the water stop function can be increased.

  In the underwater fish lamp according to the present invention, since the receptacle 11 has a robust structure in which the receptacle-side contact conductors 21 and 22 are accommodated inside the receptacle shell 15 made of metal, the fish lamp can be used as a fishing net in the sea. Even if the lamp is subjected to a large external force due to contact or collision with the seabed, there is no possibility that the receptacle 11 will be damaged. The shell 35 of the plug connector 12 is made of rubber in order to enhance the water stop function. However, since the water stop portion of the plug shell is protected by a protective sleeve fitted to the outer periphery thereof, Even if a large external force is applied, the plug connector is not easily damaged. Even if the plug shell 35 is cracked due to the deterioration of the rubber, the receptacle 11 protected by the metal shell 15 will not be damaged, so that it is possible to prevent water from entering the lamp 5. It is possible to prevent the lamp 5 itself from being damaged.

  As described above, even if the power cable 3 or the plug connector 12 is damaged, the receptacle 11 can prevent water from entering the lamp 5 and prevent the lamp 5 from being damaged. By replacing the power cable attached to the tip with a new one, the function of the fish lamp can be restored. Therefore, when using an expensive lamp using a light emitting diode, it is possible to prevent the occurrence of a situation where the lamp itself needs to be replaced at an early stage. The life of the lamp can be extended.

  The configuration of the lamp 5 shown in FIG. 2 is merely an example, and the present invention is not limited to the case where the lamp shown in FIG. 2 is used.

  In addition, the present invention can provide a particularly significant effect by applying it to a fish lamp that is expected to have a long life because of its high cost, such as a fish lamp using a light-emitting diode as a light emitter. Of course, the present invention can also be applied to a fish collecting lamp using a lamp or the like.

  In the above embodiment, since a light emitting diode is used as the light emitter of the fish lamp, and it is necessary to apply a DC voltage to the light emitter with a predetermined polarity, a key 15h is provided in the plug insertion hole of the receptacle shell, A key groove 35h is provided in the plug shell so that the polarities of both can be matched when the plug 12 is inserted into the receptacle 11. However, when the polarity of the voltage applied to the light emitter does not need to be matched, Keys and keyways can be omitted.

  In the above embodiment, the ceiling chamber 504 partitions the wiring chamber 503 in the lamp housing 501 and the chamber in which the light emitter is accommodated, but the wiring chamber 503 has a power feeding portion (terminal portion) to the light emitter. ) May be used as long as the room is disposed in the room, and the room is not necessarily separated from the other room. For example, when the entire housing has a sealed structure and the inside of the housing is not particularly partitioned into a plurality of chambers, the entire inside of the housing becomes a wiring chamber.

It is explanatory drawing for demonstrating the state at the time of use of the fish collection lamp concerning this invention. It is sectional drawing which showed the structure of the lamp used in embodiment of this invention. It is the longitudinal cross-sectional view which showed the structure of the power cable connector for underwater fish collection lamps used by embodiment of this invention. (A) is a rear view of a receptacle used in the power cable connector for an underwater fish lamp of this embodiment, (B) is a sectional view taken along the line IVB-IVB of (A), (C) is a front view of the receptacle, (D ) Is a left side view of the receptacle. (A) is a front view of a rubber sleeve used in the receptacle, and (B) is a sectional view of the rubber sleeve. (A) is a front view of a shell fixing nut forming a part of the receptacle, and (B) is a half sectional view of the shell fixing nut. (A) is a front view of the plug connector used in this embodiment, (B) is a cross-sectional view taken along the line VB-VB of (A), (C) is a cross-sectional view taken along the line VC-VC of (A), and (D) is the same. It is a right view of a plug. It is a side view of the plug side contact conductor provided in the plug connector used by this embodiment. (A) is a front view of the protective sleeve provided in the plug connector used in this embodiment, and (B) is a longitudinal sectional view of the protective sleeve. (A) is a front view of the lock nut used in the present embodiment, and (B) is a half vertical sectional view of the lock nut.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Power supply cable 5 Lamp 501 Lamp housing 507 Light emitting diode 509 Bushing 511 Terminal conductor 511a Feed part 512 Terminal conductor 512a Feed part 513 Wiring room 6 Underwater fish lamp 10 Power cable connector 11 Receptacle 12 Plug connector 13 Lock nut 15 Receptacle shell 15a Portion from the center of the receptacle shell 15b First male screw portion 15c Second male screw portion 15g Plug insertion hole 16 Contact assembly 17 Shell fixing nut 18 Packing 21 Receptacle side contact conductor 21a Receptacle contact 21b Terminal portion 22 Receptacle side contact conductor 22a Receptacle contact 22b Terminal portion 25 Insulating member 26 Rubber sleeve 27 Adhesive 27 'Adhesive 31 Plug side contact guide Body 32 Plug side contact conductor 35 Plug shell 35a Plug shell tip 35c Plug shell collar 35d Plug shell rear end 37 Protection sleeve 37a Flange 41 Adhesive layer 41 ′ Adhesive layer

Claims (6)

A lamp having a housing holding a light emitter, and a power cable having a distal end portion electrically connected to a power feeding portion to the light emitter in a sealed wiring room provided in the housing of the lamp, In the underwater fish collection lamp used when the lamp is thrown into the water,
It is made of a corrosion-resistant metal and has a male screw portion formed on the outer periphery of the front end portion, a plug insertion hole is formed inside the male screw portion, and a rear end portion penetrates a portion facing the wiring chamber of the lamp housing. A metal receptacle shell that is liquid-tightly connected to the housing, a receptacle contact at a front end portion, and a terminal portion that is electrically connected to a power feeding portion to the light emitter at the rear end portion. A receptacle provided with a receptacle-side contact conductor housed in the receptacle shell, and a receptacle-side water blocking portion for preventing water from flowing through the inside of the receptacle shell;
A plug-side contact conductor having a plug contact connected to the receptacle contact at the front end and a rear end portion connected to the core of the power cable at the front end of the power cable, the plug-side contact conductor, and the power cable The plug-side contact conductor and the power cable are formed integrally with the portion near the tip so that the tip can be press-fitted into the plug insertion hole of the receptacle shell, and the tip is A plug shell made of an insulating rubber having a flange formed on the outer periphery thereof that is brought into contact with the front end surface of the receptacle shell when pressed into the plug insertion hole, and a plug for preventing water from flowing through the plug shell It has a side water stop part and a flange part at the tip part, and the flange part is brought into contact with the flange part on the outer periphery of the plug shell. A protective sleeve made of a corrosion-resistant metal fitted on the outer periphery of the plug shell in a state where the plug contact is connected to the receptacle contact in a state in which a tip end portion of the plug shell is press-fitted into the plug insertion hole. A plug connector;
The flange portion of the protective sleeve is fitted to the outer periphery of the protective sleeve and is screwed into the male screw portion at the outer peripheral portion of the distal end portion of the receptacle shell so that the flange portion of the plug shell is connected to the distal end side of the receptacle shell. A lock nut made of a corrosion-resistant metal
An underwater fish collection lamp. A lamp having a housing holding a light emitter, and a power cable whose tip is electrically connected to a power feeding portion to the light emitter in a sealed wiring chamber provided in the housing of the lamp, In the underwater fish collection lamp used when the lamp is thrown into the water,
The power cable is connected to the lamp via a receptacle attached to a housing of the lamp and a plug connector attached to a tip of the power cable,
In the receptacle, the outer periphery of the portion near the front end and the portion near the rear end are the first and second male screw portions having a smaller diameter than the portion near the center, respectively, and the plug is inserted inside the first male screw portion. A cylindrical receptacle shell in which a hole is formed, a receptacle contact at the front end portion, and a terminal portion electrically connected to the power feeding portion to the light emitter at the rear end portion and arranged in parallel to each other A solid insulating member molded in a state of covering a middle portion between the pair of receptacle-side contact conductors and the pair of receptacle-side contact conductors, and the insulation fitted to the outer periphery of the insulating member and bonded to the insulating member A rubber sleeve, and the insulating member is press-fitted into an inner periphery of the receptacle shell through the rubber sleeve so that the rubber sleeve is formed on the receptacle shell. A contact assembly held in the receptacle shell by being adhered to the periphery, and a portion closer to the center of the second male screw portion and the receptacle shell by being fitted to the outer periphery of the second male screw portion A packing that is in contact with a step formed between and a shell fixing nut that is screwed into the first male screw portion,
In the receptacle, the second male screw portion of the receptacle shell is disposed in a state of passing through a portion facing the wiring chamber of the housing of the lamp, and the shell fixing screw is engaged with the second male screw portion. Fastened to the housing of the lamp by a nut,
The plug connector has a pair of plug contacts connected to the pair of receptacle contacts at the tip, and a rear end connected to a pair of core wires of the power cable at the tip of the power cable. A pair of plug-side contact conductors, and the pair of plug-side contact conductors and a portion near the tip of the power cable are formed integrally with the pair of plug-side contact conductors and the power cable. A tip portion is formed so that it can be press-fitted into the plug insertion hole of the receptacle shell, and a collar portion that contacts the tip surface of the receptacle shell when the tip portion is press-fitted into the plug insertion hole is formed on the outer periphery. A formed insulating rubber plug shell, an outer periphery of at least a part of the plug-side contact conductor, and the front of the power cable An adhesive layer for adhering the outer periphery of the portion located in the plug shell to the plug shell over the entire periphery, and a flange portion at the tip, and the flange portion is a flange portion on the outer periphery of the plug shell A protective sleeve fitted to the outer periphery of the plug shell in contact with the plug shell, and the pair of plug contacts when the tip end of the plug shell is press-fitted into the plug insertion hole. Configured to be connected to a receptacle contact of
The flange portion of the protective sleeve is fitted to the outer peripheral surface of the protective sleeve and screwed into the first male thread portion of the receptacle shell so that the flange portion of the plug shell is brought to the front end side of the receptacle shell. A lock nut is provided, and the plug shell and the receptacle in a state where the flange portion of the protective sleeve is compressed between the flange portion of the protective sleeve and the front end surface of the receptacle shell by tightening the lock nut. Combined with the shell,
The receptacle shell, the shell fixing nut, the protective sleeve, and the lock nut are formed of a corrosion-resistant metal,
A receptacle-side water stop portion configured to prevent water from flowing through the inside of the receptacle shell by the insulating member and the rubber sleeve bonded to the insulating member and the receptacle shell is configured,
The adhesive layer constitutes a plug-side water stop portion that prevents water from flowing through the inside of the plug shell,
Underwater fish collection lamp characterized by.   The underwater fish collection lamp according to claim 1, wherein the receptacle contact is a male contact, and the plug contact is a female contact. A lamp having a housing holding a light emitter, and a power cable having a tip electrically connected to a power feeding portion to the light emitter in a sealed wiring chamber provided in the housing of the lamp. Is a power cable connector for an underwater fish collection light that connects the power cable to an underwater fish collection light that is thrown into the water,
A receptacle fixed to the housing of the lamp, and a plug connector attached to a tip of the power cable and connected to the receptacle;
The receptacle is made of a corrosion-resistant metal, and has a male screw portion formed on the outer periphery of the front end portion, a plug insertion hole formed inside the male screw portion, and a rear end portion facing the wiring chamber of the housing of the lamp. A receptacle shell penetrating through the portion and liquid-tightly connected to the housing; a rear end portion having a receptacle contact at a front end portion and a terminal portion electrically connected to a power feeding portion to the light emitter; A receptacle-side contact conductor accommodated in the receptacle shell, and a receptacle-side water stop portion for preventing water from flowing through the inside of the receptacle shell;
The plug connector has a plug contact connected to a core wire of the power cable at a tip, a plug-side contact conductor connected at a tip end of the power cable to the core wire of the power cable, and the plug side The contact conductor and the portion near the tip of the power cable are covered and formed integrally with the plug-side contact conductor and the power cable so that the tip can be press-fitted into the receptacle shell. When the portion is press-fitted into the plug insertion hole of the receptacle shell, an insulating rubber plug shell formed on the outer periphery of the flange portion that comes into contact with the front end surface of the receptacle shell, and water flows through the plug shell A plug-side water blocking portion that prevents the plug from being formed, and a flange portion at a tip portion, and the flange portion is connected to the outside of the plug shell. A protective sleeve made of a corrosion-resistant metal fitted on the outer periphery of the plug shell while being in contact with the flange portion of the plug shell, and the plug shell with the tip end portion of the plug shell being press-fitted into the receptacle shell. A contact is configured to be connected to the receptacle contact;
The flange portion of the protective sleeve is fitted to the outer periphery of the protective sleeve and is screwed into the male screw portion at the outer peripheral portion of the distal end portion of the receptacle shell so that the flange portion of the plug shell is connected to the distal end side of the receptacle shell. A lock nut made of a corrosion-resistant metal to be tightened to the plug shell in a state where the flange portion of the protective sleeve is compressed between the flange portion of the protective sleeve and the tip end surface of the receptacle shell by tightening the lock nut; A plug shell and the receptacle shell are configured to be coupled;
A power cable connector for underwater fish lamps. A lamp having a housing holding a light emitter, and a power cable having a tip electrically connected to a power feeding portion to the light emitter in a sealed wiring chamber provided in the housing of the lamp. Is a power cable connector for an underwater fish collection light that connects the power cable to an underwater fish collection light that is thrown into the water,
A receptacle fixed to the housing of the lamp, and a plug connector attached to a tip of the power cable and connected to the receptacle;
In the receptacle, the outer periphery of the portion near the front end and the portion near the rear end are the first and second male screw portions having a smaller diameter than the portion near the center, respectively, and the plug is inserted inside the first male screw portion. A cylindrical receptacle shell in which a hole is formed, a receptacle contact at the front end portion, and a terminal portion electrically connected to the power feeding portion to the light emitter at the rear end portion and arranged in parallel to each other A solid insulating member molded in a state of covering a middle portion between the pair of receptacle-side contact conductors and the pair of receptacle-side contact conductors, and the insulation fitted to the outer periphery of the insulating member and bonded to the insulating member A rubber sleeve, and the insulating member is press-fitted into an inner periphery of the receptacle shell through the rubber sleeve so that the rubber sleeve is formed on the receptacle shell. A contact assembly bonded to the periphery, and a step formed between the second male screw portion and a portion closer to the center of the receptacle shell by being fitted to the outer periphery of the second male screw portion. A packing for contacting the shell and a nut for fixing the shell screwed to the first male screw portion, and the insulating member and the rubber sleeve prevent water from flowing through the inside of the receptacle shell. A water stop on the receptacle side is configured,
The plug connector has a pair of plug contacts connected to the pair of receptacle contacts at the tip, and a rear end connected to a pair of core wires of the power cable at the tip of the power cable. A pair of plug-side contact conductors, and the pair of plug-side contact conductors and a portion near the tip of the power cable are formed integrally with the pair of plug-side contact conductors and the power cable. The distal end is formed so as to be press-fitted into the inner periphery of the receptacle shell on the distal end side, and is brought into contact with the distal end surface of the receptacle shell when the distal end is press-fitted into the plug insertion hole of the receptacle shell. A plug shell made of insulating rubber having a crucible portion formed on the outer periphery, and an outer periphery of at least a part of the plug-side contact conductor; An adhesive layer for adhering the outer periphery of the portion of the power cable located in the plug shell to the plug shell over the entire circumference, and a flange portion at the tip, and the flange portion of the plug shell A protective sleeve fitted to the outer periphery of the plug shell in contact with the outer flange portion, and the pair of plug contacts when the tip end portion of the plug shell is press-fitted into the plug insertion hole. Are each configured to be connected to the pair of receptacle contacts,
The flange portion of the protective sleeve is fitted to the outer peripheral surface of the protective sleeve and screwed into the first male thread portion of the receptacle shell so that the flange portion of the plug shell is brought to the front end side of the receptacle shell. A lock nut is provided, and the plug shell and the receptacle in a state where the flange portion of the protective sleeve is compressed between the flange portion of the protective sleeve and the tip end surface of the receptacle shell by tightening the lock nut. Configured to be combined with the shell,
The receptacle shell, the shell fixing nut, the protective sleeve, and the lock nut are formed of a corrosion-resistant metal,
A receptacle-side water stop portion configured to prevent water from flowing through the inside of the receptacle shell by the insulating member and the rubber sleeve bonded to the insulating member and the receptacle shell is configured,
The adhesive layer constitutes a plug-side water stop portion that prevents water from flowing through the inside of the plug shell,
A power cable connector for underwater fish lamps.   The power cable connector for an underwater fish collection lamp according to claim 4 or 5, wherein the receptacle contact comprises a male contact, and the plug contact comprises a female contact.

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