JPS6333241B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an underwater lamp in which a supporting vessel is supported by a cable, and more particularly to an underwater lamp in which a connection structure between a socket in a lamp house and a cable is improved.

(Background technology) Underwater lights are generally used as fishing lights for fishing or underwater work lights by suspending a lamp house underwater using a cable from a ship and lighting a lamp fitted into a socket inside the lamp house. say something

First, the basic configuration of the underwater light proposed by the applicant will be explained, and its problems will also be mentioned.

FIG. 6 is a diagram showing the basic configuration of the underwater light proposed by the applicant of the present invention, in which FIG. 6A is a side view and FIG. 6B is a plan view.

The lamp 1 is an underwater light emitting lamp having a light emitting part housed in a glass container, and uses, for example, a halogen lamp. The lamp 1 includes a light emitting part 1f, a cylindrical part 1a connected to the light emitting part 1f, a base part 1b having a smaller diameter than the diameter of the cylindrical part 1a, an inclined part 1c connecting the cylindrical part 1a and the base part 1b, and a base part 1a. It consists of a base 1d connected to a light emitting part 1b, and a filament 1e is provided inside the light emitting part 1f. A base 1d of the lamp 1 is fitted into a socket 3 provided in a lamp house 2. Cooling fins 2a are provided on the outer periphery of the lamp house 2. The upper part of the lamp house 2 is watertightly sealed by a head 4 via an O-ring 5. A cable 6 is led out from the top of the head 4, and is sealed watertight with a packing holder 8 via packings 7, 7a. The cable 6 is connected to the socket 3 with screws 3a, 3a. Three guard stays 12 are screwed to the opening side of the lamp house 2, and a weight 13 is fixed to the guard stays 12. The guard stay 12 is for protecting the lamp 1 from underwater obstacles and the like. The weight 13 is for quickly sinking the underwater lamp into the water.

The applicant has already proposed a structure for holding the lamp 1 in the opening of the lamp house 2 that can withstand use under high water pressure. This structure will be briefly described.
One end 9a of the gasket 9 is in contact with the end surface of the opening 2b of the lamp house 2. The inside of the packing 9 has a small diameter inner wall 9 that comes into contact with the base 1b of the lamp 1.
b, a large-diameter inner wall 9d that contacts the cylindrical portion 1a of the lamp 1, and an inclined inner wall 9c that contacts the inclined surface 1c of the lamp 1. The outer side of the packing 9 is formed by a cylindrical outer wall 9f having an inclined portion 9e at the other end. Patchkin 9 is Patchkin presser 10
is tightened by fixing it to the lamp house 2 with screws 11. The external dimensions of the packing 9 are larger than the space formed by the lamp 1, the lamp house 2, and the packing holder 10. Therefore, when the packing presser 10 is tightened and fixed, the internal stress generated in the packing 9 causes
Uniform compressive stress acts on the gasket 9, so that it adheres uniformly to each surface of the lamp 1.

With the above structure, watertightness can be maintained even if the dimensional accuracy of each surface of the lamp 1 is relatively low. In addition, even if the volume of the packing or the volume of the part where the packing is accommodated changes due to manufacturing errors, the error in volume is automatically corrected by slightly shifting the position of the light bulb in the axial direction. It is easy to tighten the bulb and there is no risk of it being damaged due to excessive stress being applied to the bulb. In other words, watertightness between the opening of the lamp house 2 of the underwater lamp and the lamp 1 is maintained, and movement of the lamp 1 in the direction of the base 1d can be avoided.

However, the following problems arose regarding the connection structure between the head 4 of the lamp house 2 and the cable 6. In the underwater lamp, the head 4 and the cable 6 are fixed by tightening the seals 7, 7a with a seal presser 8 and supporting them by frictional force. However, underwater lights used in the deep sea are heavy and the cable 6 has a large resistance to ocean currents, so a large tensile stress is applied to the cable 6 when it is hoisted up by a winch from a ship. The outer jacket of the cable 6 is made of vinyl or the like, so it stretches, but the core wire hardly stretches in comparison. Therefore, most of the weight of the underwater light is supported by the core wire of the cable 6. When a shock load is applied to the cable 6 during winding, etc., the load is applied only to the core wire of the cable 6, and even if the outer sheath of the cable 6 is fixed to the head 4, only the core wire often shifts. When the socket 3 was fixed to the lamp house 2, the core wire of the cable 6 would pull on the socket 3, which could break the electrical connection with the connection part or damage the socket 3. If the socket 3 is not fixed to the lamp house 2, the lamp 1 fitted in the socket 3 may be damaged if the conventional structure is used.

(Object of the Invention) The object of the present invention is to prevent electrical connection with the socket in the lamp house from being broken or damage to the socket or lamp even if an impact load is applied to the cable led out from the lamp house. An object of the present invention is to provide an underwater light having a cable connection structure without cable connection.

(Structure of the Invention) In order to achieve the above object, the underwater light according to the present invention includes an underwater light supporting a support container housing a socket into which an underwater luminescent light is fitted, supported by a cable electrically connected to the socket. In the lamp, a cable core wire fixing part that prevents movement of the cable in a pulling direction, an underwater luminescent lamp supported in a watertight manner at an opening of the support container, and a cable core wire fixing part that is connected to and fixed to an electrode of the underwater luminescent lamp. A cable connection structure is provided that includes a socket and an electrical connection line that electrically connects the core of the cable to the socket via the cable core fixing part even if the distance between the cable core fixing part and the socket changes. It is composed of

According to the above structure, the object of the present invention can be completely achieved.

(Example) Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

FIG. 1 is a sectional view showing the main parts of an embodiment of an underwater light according to the present invention, and FIG. 2 is a diagram showing details of a cable core fixing part used in the embodiment. Note that the same reference numerals are given to parts that perform the same functions as those in the basic configuration described above.

A cable 6 is led out from the top of the head 4 of the lamp house 2. The cable 6 is watertightly sealed with a seal 7 pressed by a seal presser 8. The tip of the cable 6 is connected to a connector body 14.

The cable core fixing portion is realized by the connector body 14. The connector body 14 is housed in the head 4, and its upper surface abuts the inside of the head 4. The connector body 14 has an insertion opening 14a formed along the central axis. cable 6
is inserted from the upper side of the insertion opening 14a as shown in FIG. 2B, and extracted from the lower side as shown in FIG. 2A. As shown in FIG. 2F, the connector body 14 is formed with protruding friction surfaces 14b, 14c, and the core wire 6a of the cable 6 is brought into contact with the friction surfaces 14b, 14c. Therefore, when the cable 6 receives a tensile load on the outside, it is tightened.

The core wire 6a of the cable 6 is connected to a connecting portion 15c of a connector 15 provided on the connector body 14 with a screw 15e, as shown in FIG. 2C. The connection part 15c is the mounting screw 15 of the connector 15.
It is connected to the connector 15 through d. The connecting portion 15a of the connector 15 with the socket 3 is shown in FIGS. 2D and 2E. The cable 6 is connected to the friction surfaces 14b and 14c of the connector body 14 and the connecting portion 1.
Since the tensile load is distributed and received by the cable 5c, the part corresponding to the connection part 3a with the socket 3 shown in FIG.
It will not be cut before the middle part.

As shown in FIG. 1, the socket 3 is kept at a constant distance from the connector body 14 and is movable in the axial direction. A convex portion 3b is provided on the outer periphery of the socket 3 along a direction parallel to the axis, and contacts the key 2b on the inner periphery of the lamp 2 to restrict rotation about the axis. Socket screw 3 of socket 3
A pin 3d is fixed to a with a set screw 3c.

The pin 3d is slidable in the axial direction and electrically connected to the connecting portion 15a of the connector 15.

The lamp 1 into which the socket screw 3a of the socket 3 is fitted is connected to the lamp house 2 via a packing 9. The connection structure is the same as the basic configuration described above, and although it cannot be moved in the direction of the socket 3, even if the position of the base 1d shifts in the axial direction due to manufacturing errors, the movement of the socket 3 will allow the lamp 1 and the gasket 9 to be connected. relationships are maintained normally.

(Modifications) The present invention is not limited to the embodiments described in detail above, and can be modified in various ways.

FIG. 3 is a diagram showing another embodiment of the cable core wire fixing part and the electrical connection line. In this embodiment, in order to prevent the cable core wire fixing part 18 from moving in the pulling direction of the cable 6, a fastening member 18b is attached to the central space of the main body 18a with a fixing member 18c using a screw 18d.
It is designed to be tightened. The electrical connection wire is core wire 6a
The extended part of the core wire 6a, which is fixed to the socket 3 with the screw 3c, has a margin in the pulling direction, and the cable core wire fixing part 18
Even if the distance between the socket 3 and the socket 3 changes, the electrical connection is maintained.

FIG. 4 is a diagram showing still another example of the cable core wire fixing part. The cable core fixing portion may have a friction surface in a direction inclined to the pulling direction of the cable 6. Therefore, the cable core wire fixing part 18 shown in FIG. 4 may be shaped like the cable core wire fixing part 18, and the core wire 6a of the cable 6 may be tied and tightened to this cable core wire fixing part 18. In this case as well, core wire 6
The tip of a can be fixed to the socket 3 with a screw 3c as an electrical connection wire as shown in FIG.

FIG. 5 is a diagram showing still another example of the electrical connection line. The connector may have any structure as long as it can electrically connect the core wire 6a of the cable 6 to the socket 3 via the cable connector 14 even if the distance between the cable connector 14 and the socket 3 changes. Therefore, using the mesh wire 17 shown in FIG.
5e and 3c may be fixedly connected to each other. Furthermore, the structure is not limited to mesh wires, but may be any structure that can maintain electrical connection even if the distance changes, such as a coil spring or a plate spring.

In each of the embodiments described above, the conductors of the core wire are fixed through insulators, but a structure in which the conductors are fixed in a straight line may also be used.

(Effects of the Invention) As explained in detail above, according to the present invention,
Even if a shock load is applied to the cable led out from the lamp house, the electrical connection with the socket in the lamp house will not be broken and the socket will not be damaged.

Additionally, with this structure, there is no need to fix the socket, so no tensile or compressive loads are applied to the lamp, and even if the lamp is moved due to errors in external dimensions, water pressure, heat, etc., the lamp will not be damaged. These inconveniences have disappeared.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of an embodiment of an underwater light according to the present invention, and FIG. 2 is a diagram showing details of a cable core fixing part used in the embodiment. FIG. 3 is a diagram showing another embodiment of the cable core wire fixing part and the electrical connection line. FIG. 4 is a diagram showing still another example of the cable core wire fixing part, and FIG. 5 is a diagram showing still another example of the electrical connection line. Figure 6 is a diagram showing the basic configuration of the underwater light proposed by the applicant, and Figure A is a side view;
Figure B is a plan view. 1... Lamp, 2... Lamp house, 3... Socket, 4... Head, 5... O-ring, 6...
Cable, 7...Patchkin, 8...Packkin presser, 9...Packkin, 10...Packkin presser, 1
1... Screw, 12... Guard stay, 13... Weight, 14... Connector body, 15... Connector, 17... Network wire, 18... Cable core wire fixing part.

Claims (1)

[Scope of Claims] 1. In an underwater lamp in which a support container housing a socket into which an underwater luminescent lamp is fitted is supported by a cable electrically connected to the socket, movement of the cable in a pulling direction is provided. a cable core wire fixing part for blocking, an underwater luminescent lamp watertightly supported by the opening of the support container, a socket connected to and fixed to an electrode of the underwater luminescent lamp, and a cable core wire fixing part for fixing the cable core wire. An underwater lamp characterized in that a cable connection structure is provided in the socket via a cable core wire fixing part and an electrical connection line that is electrically connected even if the distance between the socket and the cable core wire fixing part changes. 2. The core wire fixing portion has a friction surface in a direction intersecting the pulling direction of the cable, and is tightened when the core wire of the cable is pulled from the outside, thereby preventing the core wire from moving. An underwater lamp according to claim 1.