JPH024995B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to improvements in underwater cable connectors used, for example, in underwater motors.

[Prior art]

As a conventional device of this kind, there was one shown in Japanese Utility Model Publication No. 11608/1983 as shown in FIG. In the figure, 1 is the frame of the underwater motor, 2 is an internal terminal arranged in this frame 1, 3 is a connection terminal connected to this internal terminal 2, and 4 is a frame 1
a protrusion 5 inserted into the interior and surrounding the connection terminal 3;
Reference numeral 6 denotes a cable connected to the connection terminal 3, and 7 a cable lead-out portion that continues from the collar portion 5 and surrounds the cable 6, and is bent at a substantially right angle at a distance from the collar portion 5. Note that the protruding portion 4, the collar portion 5, and the cable lead-out portion 7
is integrally molded with an insulating material, and the cable 6
Together with this, it constitutes a cable connector (8).

In the structure configured as described above, when the cable connector 8 is attached to the frame 1, the flange portion 5 comes into close contact with the end face of the frame 1, thereby sealing the inside and outside of the frame 1.

However, since the cable 6 extends upward from the center of the flange 5 and is bent at a substantially right angle at a position away from the flange 5, the bent portion of the cable 6 protrudes largely from the frame 1. Therefore, if the cable 6 is attached in the axial direction of the frame 1, the axial dimension of the frame will be large, and if it is attached in the radial direction, the radial dimension of the frame will be large, and the cable connector 8 will be attached. Not only does the device become larger including the cable connector 8, but also the cable connector 8 and the frame 1
When attaching the cable connector 8 to the cable connector, the flange 5 that protrudes slightly in the radial direction must be tightened with bolts (not shown), and the pressing force applied to the flange 5 of the cable connector 8 tends to be uniform, making it watertight. It also had the disadvantage that its properties tend to deteriorate.

[Summary of the invention]

The present invention has been made in order to eliminate such drawbacks, and includes a shaft-shaped connection part that has a built-in connection terminal and is molded with an insulating material, a cable having a bare twisted wire connected to the connection terminal, and Continuing from the connection part, a mounting part formed with a diameter larger than the diameter of this connection part and molded with the above-mentioned insulating material at the same time as the connection part; The cable is led out in a direction perpendicular to the axial direction of the connection part, and has a cable lead-out part molded with the insulating material at the same time as the attachment part, and the bare stranded wire is led out in the direction perpendicular to the axial direction of the connection terminal in the cable. By covering the outer periphery of this bare stranded wire with a heat-shrinkable tube, it is possible to not only significantly reduce the height dimension, but also improve electrical reliability. The purpose is to provide a connector.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 2 to 6.
This will be explained with a diagram. In the figure, reference numeral 9 denotes a fitting part made of an insulating material that is fitted into a device (not shown, the same applies hereinafter), and a small diameter part 9b having a plurality of protrusions 9a on the outer periphery.
The small diameter portion 9b is coaxially continuous with the small diameter portion 9b.
It has a large diameter portion 9c configured to have a larger diameter than b,
It forms the connection part. Reference numeral 10 denotes a connection terminal integrally molded within the fitting part 9; 11 is continuous with the fitting part 9 and has a larger diameter than the large diameter part 9c, through which a bolt or the like for attaching to a device is inserted. The mounting portion has a plurality of through holes 11a, and the end surface opposite to the fitting portion 9 is configured to be flat. 12 is connection terminal 1
0, close to the fitting part 9, and led out in a direction perpendicular to the axis of the fitting part 9, the lead wire 12a of which is formed by a bare stranded wire 12c with the insulation coating 12b removed. and is connected to the connection terminal 10. 13 surrounds the cable 12 and connects the mounting portion 11
The lead-out portion 14 is a metal ring that surrounds the outer periphery of the mounting portion 11 and is integrally molded with the mounting portion 11. A cutout portion 14a is formed at the upper end, and the cable 12 passes through the cutout portion 14a. It has been derived. 15 is a metal lid that covers the end surface of the attachment part;
A through hole 15a is formed opposite to the through hole 11a, and is integrally molded into the mounting portion 11. In addition, the fitting part 9, the mounting part 11, the cable lead-out part 13, the cable 12, the ring 14, the lid 15
constitute a cable connector 16, and the fitting part 1
9. The attachment part 11 and the cable lead-out part 13 are integrally made of an elastic insulating material. 17 is the end of the connection terminal 10, the bare hot wire 12b and the insulation coating 1
A heat-shrinkable tube is placed astride both 2a and is tightly attached to the outer periphery of each.

When the device configured as described above is attached to a device, the small diameter portion 9b and the large diameter portion 9c are first fitted to the device, and then the lid 15 is pressed with a bolt. The mounting portion 11 is compressed. Here, since the outer periphery of the mounting part 11 is surrounded by the ring 14, expansion in the radial direction is suppressed, the mounting part 11 is firmly attached to the surface of the device, and the cable connector 16 is connected to the device. Provides sufficient watertightness.

Further, since the entire lid 15 presses the end face of the mounting portion 11, the mounting portion 11 is compressed uniformly, and the close contact with the equipment is also uniform.

In addition, since the cable 12 is located close to the fitting part 9 and is orthogonal to the axis of the fitting part 9,
The height dimension of the cable 12 is derived at a position lower than the height of the attachment part 11, and the height dimension of the cable connector 16 is significantly reduced.

By the way, when integrally molding the fitting part 9, the mounting part 11, and the cable lead-out part 13, the lead wire 12a of the cable 12 is coated with the insulation coating 1 at the end in advance.
2b is removed to form a bare twisted wire 12c.
Next, this bare twisted wire 12c is connected to the connection terminal 10. In this case, the bare twisted wire 12c and the connection terminal 10
and the end of the insulation coating 12b are covered with a heat shrink tube 17. In this state, resin is molded around the cable 12 and the connection terminal 10, and the assembly is completed. Here, the resin injection pressure during this molding is applied to the bare stranded wire 12c, but since the surrounding area is covered with the heat shrink tube 17, accidents such as cutting of many thin wires of the bare stranded wire 12c are prevented. Prevented. In other words, if it is not covered with the heat shrink tube 17, there is a risk that the thin wires of the bare stranded wires 12c may break due to the injection pressure, or that the broken thin wires may come into contact with the bare stranded wires of other connection terminals. However, there is 1 bare stranded wire in the heat shrink tube 17.
Since the wires 2c are covered, the bending of the thin wires of the bare twisted wires 12c is suppressed, and breakage of the thin wires is prevented.

〔Effect of the invention〕

As described above, the present invention incorporates a shaft-shaped connection part that has a built-in connection terminal and is molded with an insulating material, and a cable that has bare twisted wires that are connected to the connection terminal. a mounting part formed to have a diameter larger than the diameter of the connection part and molded with the insulating material at the same time as the connection part, and a mounting part continuous with the mounting part, close to the connection part, and perpendicular to the axial direction of the connection part; A cable is led out in the direction, and a cable lead-out part is molded with the insulating material at the same time as the attachment part, and the bare twisted wire is located at a part of the cable that is bent in a direction orthogonal to the axial direction of the connection terminal. By covering the outer periphery of this bare stranded wire with a heat-shrinkable tube, not only can the height be significantly reduced, but it also prevents accidents such as the bare stranded wire breaking due to the pressure applied when insulating material is injected. This has the effect of significantly improving reliability.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional device, FIG. 2 is a sectional view showing an embodiment of the present invention, FIG. 3 is a bottom view thereof, FIG. 4 is a plan view showing the ring in FIG. 2, and FIG.
The figure is a side view thereof, and FIG. 6 is a plan view showing the lid of FIG. 2. In the figure, 9 is a fitting part, 10 is a connection terminal, 11 is a mounting part, 12 is a cable, 12c is a bare twisted wire, 13 is a cable lead-out part, 14 is a ring, 1
5 is a lid, and 17 is a heat shrink tube. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (1)

[Claims] 1 A shaft-shaped connection part with a built-in connection terminal and molded with an insulating material, a built-in cable with bare twisted wires connected to the connection terminal, and a cable with a diameter larger than the diameter of this connection part, which is connected to the connection part. a mounting portion formed in the same diameter and molded with the insulating material at the same time as the connection portion, and a cable that is continuous with the mounting portion and close to the connection portion and led out in a direction perpendicular to the axial direction of the connection portion. , comprising a cable lead-out part molded with the insulating material at the same time as the mounting part, and the bare twisted wire is located at a part of the cable that is bent in a direction perpendicular to the axial direction of the connection terminal;
This underwater cable connector is characterized in that the outer periphery of this bare stranded wire is covered with a heat shrinkable tube.