JPH0132305Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a plug that includes a columnar plug body having a conductive portion and a knob attached to the base of the plug body.

(Prior Art) Conventionally, as a technology in this field, there has been one as shown in FIG. 2, for example. The configuration will be explained below.

FIG. 2 is a longitudinal sectional view showing an example of the configuration of a conventional L-shaped single-head plug.

In the figure, reference numeral 1 denotes a bipolar plug body to be inserted into a jack or the like, and a knob 2 integrally molded from a resin such as plastic is attached to the base of the plug body 1. Here, the plug body 1 has a conductive part consisting of a tip 3 having a shaft 3a and a sleeve 4, and an insulating collar 5 interposed between the chip 3 and the sleeve 4, and an insulating collar 5 for holding the conductive part and protecting it from insulation. It is formed into a columnar shape. At the base of the plug body 1, the shaft 3a is connected to the core wire 6a of the cord 6, and the sleeve 4 is connected to the shield wire 6b of the cord 6. The knob 2 also includes a hard resin member 7 that covers the connection portion, and a hard resin member 7 that covers the connection portion.
The connection point is fixed in a substantially L-shape with the hard resin member 7, and the resin member 7 is further fixed with the soft resin member 8. By covering it, the strength of the connection point is increased.

(Problems to be solved by the invention) However, the single-head plug has a structure in which the base of the plug body 1 is covered with a hard resin member 7, and the outside thereof is further covered with a soft resin member 8. As a result, the following problems arose.

That is, when attaching the knob 2 to the base of the plug body 1, the connection point between the shaft 3a and the core wire 6a of the cord 6, and the shield 6b of the sleeve 4 and the cord 6.
Since the connection portion with the connector must be covered with a hard resin member 7, and the resin member 7 must be covered with a soft resin member 8, the work is complicated.

In addition, since the connection point between the cord 6 and the conductive part is fixed by the hard resin member 7, if the cord 6 breaks near the connection point, it may not be possible to repair it at all, or it may not be possible to repair it. It was extremely difficult.

Furthermore, the base of the plug body 1 is attached to the resin members 7 and 8.
Since the knob 2 is double coated, the knob 2 itself is large.

These circumstances also apply to so-called composite plugs having two or more plug bodies 1.

It is an object of the present invention to provide a plug that solves the problems of the prior art, such as the difficulty of attaching the knob, the difficulty of repair, and the large size of the knob.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a pillar-shaped plug body having a conductive part connected to the cord, and a column-shaped plug body having a conductive part connected to the cord and a conductive part attached to the base of the plug body. In the plug, the plug is provided with a knob that covers a connection point of a part, and a groove that spirally extends from the connection point toward the rear of the plug body to wrap and support the cord, and a hook that fixes the cord are formed. A cord support member having a cylindrical shape is provided on the plug body, and the knob is formed to be removable from the base of the plug body.

(Function) According to the present invention, since the plug is configured as described above, the groove of the cord support member is configured to wrap and support the cord to prevent disconnection at and near the connection point between the cord and the conductive part. The locking claws of the cord support member also function to fix the wound and supported cord, maintain the wound and supported state of the cord, and regulate the direction in which the cord is pulled out. Further, the knob covers the cord and the conductive part to provide insulation protection, and also serves to expose the part when the wire is broken. Therefore, the above-mentioned problem can be eliminated.

(Embodiment) FIG. 1 is a partially cutaway side view of a plug showing a first embodiment of the present invention, and FIG. 3 is an exploded perspective view of FIG. 1.

1 and 3 show a straight single-headed plug, and reference numeral 11 indicates a bipolar plug body to be inserted into a jack or the like. A knob 12 molded from a soft resin such as plastic is attached to the base of the plug body 11.

The plug body 11 has a tip 1 having a shaft 13a.
3 and a sleeve 14;
3 and the insulating collar 1 interposed between the sleeve 14
5 and an insulating part that holds the conductive part and provides insulation protection thereof. The entire plug body 11 is formed into a columnar shape.

A cord support member 16 made of hard resin or the like is provided on the outer periphery of the base of the plug body 11, and is molded integrally with the insulating portion or separately from the insulating portion. A groove 18 is formed in the cord support member 16 and extends spirally from the connection point between the cord 17 and the conductive portion toward the rear of the plug body 11 . Contact windows 19, 19 are provided in the groove 18 at the connection points between the cord 17 and the conductive portion. Through these contact windows 19, 19, the shaft 13a connects to the core wire 17a of the cord 17, and the sleeve 14 connects to the shield wire 17b of the cord 17.
each connected. Further, at the rear end of the cord support member 16, another groove 20 is formed which is connected to the groove 18 and extends in the radial direction of the plug body 11. Furthermore, grooves 20 are formed on both side walls of this groove 20.
A latching claw 2 for latching the protruding cord 17 inside
1 and 21 are provided.

On the other hand, the knob 12 has a large diameter part and a small diameter part connected thereto, and the large diameter part is connected to the plug body 11.
The crown is formed to be removable from a cord support member 16 provided on the outer periphery of the base, and the small diameter portion is formed to fit with the cord 17 and to be slidable relative to the cord 17.

Next, the work of connecting the cord to the plug body 11 in this plug will be explained.

First, the cord 17 is passed through the knob 12, and the contact window 19 formed in the cord support member 16,
19, and connect the core wire 17a of the cord 17 to the shaft 13a.
Next, the shield wires 17b of the cord 17 are connected to the sleeve 14 by spot welding or the like. Next, the cord 17 is wound around the cord supporting member 16 along the groove, and the wound cord 17 is further guided into another groove 20, and the cord 17 is secured to the hooking claw 2.
Latch at 1 and 21. This fixes the cord 17 to the plug body 11. Thereafter, by moving the knob 12 along the cord 17 and attaching the knob 12 to the cord support member 12 from behind, the cord 17 connection work is completed. In addition,
Disassembly of the plug is performed in the reverse order.

According to this first embodiment, since the plug is constructed as described above, the groove 18 of the cord support member 16
is the cord 17 wrapped around it and the plug body 11
The hooking claw 21 of the cord support member 16 maintains the cord 17 in the wound state. Further, the knob 12 surrounds the wound cord 17 to maintain and reinforce the wound state, and also covers the connection point between the cord 17 and the conductive portion to provide insulation protection. In addition, when the cord 17 is broken, if the knob 12 is removed from the cord support member 16, the broken part is exposed, so that repair can be easily performed.

The plug of the first embodiment having such a configuration and operation provides the following effects.

That is, the plug of the first embodiment is composed of a plug body 11 to which a cord support member 16 is attached, and a knob 12 that is removably attached to the base of the plug body 11. 17
It is extremely easy to install.

Further, since the knob 12 is removable from the base of the plug body 11, even if a break in the cord 17 and the plug body 11 occurs near the connection point between the cord 17 and the conductive part, it can be easily repaired.

Furthermore, since the plug body 11 and the knob 12 can be manufactured separately, manufacturing thereof is also easy.

Further, since it is composed of only the plug body 11 and the knob 12 attached to the base thereof, the plug itself can be made lighter and smaller.

FIG. 4 is a perspective view of a plug shown as a second embodiment of the present invention.

This plug differs from the first embodiment in that it is an L-shaped single-headed plug, in which the knob 12 is formed into an L-shape, and a hook 2 for hooking the cord 17 is formed.
1 are provided protrudingly on both side walls of the spiral groove 18. Even with such a configuration, the same functions and effects as in the first embodiment can be obtained.

Note that the present invention is not limited to the illustrated embodiment;
Various modifications are possible. For example, concave and convex portions may be formed on the outer circumferential surface of the cord support member 16 and the inner circumferential surface of the knob 12 in order to maintain a good engagement state between the two. In addition, although the above embodiment describes a two-pole single-head plug, this can also be applied to three-pole, four-pole, etc. single-head plugs, or to other plugs such as composite plugs. It is possible.

(Effects of the invention) As explained in detail above, according to the invention,
A cord support member with a spiral groove and a hook is provided at the base of the plug body, and the knob is formed so that it can be freely removed from the base of the plug body, making it easy to attach the cord. In addition, it becomes easy to repair when a wire is broken. Furthermore, manufacturing of the plug becomes easier, and the plug itself can be made lighter and smaller.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of a plug according to a first embodiment of the present invention, FIG. 2 is a vertical sectional view of a conventional plug, and FIG. 3 is an exploded perspective view of the plug shown in FIG. FIG. 4 is an exploded perspective view of a plug according to a second embodiment of the present invention. 11...Plug body, 12...Knob, 16...
... Cord support member, 17 ... Cord, 18, 20
...Groove, 21...Latching claw.

Claims (1)

[Scope of utility model registration request] A plug including a columnar plug body having a conductive part connected to a cord, and a knob attached to the base of the plug body and covering a connection point of the cord and the conductive part, at a rear side of the plug body from the connection point. a cord support member provided at the base of the plug body, the cord support member having a groove extending spirally toward the base of the plug body for winding and supporting the cord, and a hook for fixing the cord; A plug characterized in that it is formed so that its crown can be freely removed.