JPH0249660Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a so-called L-shaped single-head plug.

[Conventional technology]

Conventionally, a so-called L-shaped single-head plug is known, for example, as shown in FIG.

In the figure, reference numeral 1 denotes a bipolar plug body, for example, which is inserted into a jack or the like, and a knob 2 integrally molded with a resin made of plastic or the like is fixed 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. It is formed into a columnar shape. At the base of this plug body 1, the core wire 6a of the cord 6 is connected to the shaft 3a, and the shield wire 6b is connected to the sleeve 4.
are connected to each other. A knob 2 integrally molded into a substantially L-shape is enclosed in this connection location. Here, the knob 2 is formed so that the connection point is fixed in a substantially L-shape with a hard resin member 7, and then covered with a soft resin member 8, thereby increasing the strength of the connection point.

[Problem to be solved by the invention] However, in this type of single-head plug, since the knob 2 is composed of resin members 7 and 8, its mechanical strength is relatively weak, and it is necessary to increase this strength. If this is done, there is a drawback that the knob 2 itself becomes large, and since the two resin members 7 and 8 provide a predetermined mechanical strength, the molding process requires a lot of work.

The present invention was made in order to eliminate the drawbacks of the prior art as described above, and aims to provide a compact and robust single-head plug whose knob portion can be easily molded.

[Means to solve the problem]

The single-headed plug of the present invention includes a conductive reinforcing sleeve in which a conductive first sleeve part and a conductive second sleeve part are arranged in a substantially L shape with a gap connected to each other by a conductive connecting piece; A cord and a plug body inserted into the first and second sleeve portions in a substantially L-shaped abutting state, the reinforcing sleeve, and mutually opposing ends of the cord and the plug are integrally fixed in an embedded state. and a knob made of an insulating resin member, the cord having a core wire and a shield wire housed in a sheath, and the shield wire protruding from an end of the sheath to the outside and folded back. the shield wire is inserted into the first sleeve part in the state, and the shield wire is electrically connected to the first sleeve part by caulking a caulking part sandwiched between two circumferential grooves of the first sleeve part,
The plug body has a conductive plug sleeve serving as a ground electrode, and the plug sleeve is inserted into the second sleeve portion while being electrically connected to the second sleeve portion. .

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings. In FIG. 2 below, the same parts as in FIG. 1 are given the same reference numerals.

Fig. 2 shows a single-headed plug devised by the inventor separately from this embodiment, and the difference from Fig. 1 is that the connection point between the plug body 1 and the cord 6 is made of a conductive material such as metal. A flexible sleeve 10 is provided to fix the connection point in a substantially L-shape, and the connection point is surrounded by a knob 20 made of a resin member 18 such as plastic.

Here, the conductive sleeve 10 has a hole 11 into which the cord 6 is inserted, and a mounting hole 12 in a direction substantially perpendicular to the axial direction at the distal end. After the plug body 1 is inserted into the attachment hole 12, the periphery of the attachment hole 12 is caulked with a crimping tool or the like to fix the plug body 1 in the attachment hole 12. As a fixing method, the plug body 1 may be press-fitted into the mounting hole 12. On the other hand, the cord 6 is inserted into the hole 11, the core wire 6a is taken out through the hole 13 made in the side wall of the conductive sleeve 10 and connected to the chip shaft 3a, and the shield wire 6b is inserted into the cord 10. It is disposed between the outer circumferential surface and the inner circumferential surface of the conductive sleeve 10, and is connected to the sleeve 10 by crimping with a crimping tool or the like from the outer circumference of the sleeve 10. Thereby, the shielded wire 6b is connected to the sleeve 4 of the plug body 1 via the conductive sleeve 10. An annular concave groove 14 is formed in advance on both sides of the caulking portion 10a of the sleeve 10 along the outer peripheral surface.
15, there is an advantage that even if the caulked portion 10a is pressed with a crimping tool or the like, only the caulked portion 10a will be deformed and deformation of other parts can be prevented. Note that there is a hole 13 for taking out the core wire 6a.
A corresponding hole is formed in the sleeve 4 of the plug body 1, and the core wire 6a and the tip shaft 3a are connected to each other through this hole. Connections may also be made. After the plug body 1 and the conductive sleeve 10 are fixed in this way, a knob 20 made of a resin member 18 is attached so as to surround the connection points.
is integrally molded. Here, a soft resin material is used as the resin member 18, and as shown by the two-dot chain line in FIG.
By covering a part of the cord 6, the elastic force of the resin member 18 can prevent the cord 6 from breaking.

In this example of the invention, the connection point between the plug body 1 and the cord 6 is fixed in a substantially L-shape using the conductive sleeve 10, and is surrounded by the knob 20, so that the knob 20 part can be made small and Mechanical strength can be increased, and knob 2
0 is formed by one-time resin molding, which has the advantage of simplifying manufacturing.

FIG. 3 shows a single-head plug according to an embodiment of the present invention. In this single-head plug shown in Fig. 3, the second
Portions with the same symbols as in the figures indicate the same members.

In the case of the single-head plug shown in FIG. 3, a notch 10 is formed in the straight conductive sleeve 10A as shown in FIG.
d, and the reinforcing sleeve 10B is formed by bending the notch 10d at a substantially right angle in the opposite direction.

Insert the cord 6 into the horizontal part (first sleeve part) 10e in FIG. 3 of this sleeve 10B,
The plug body 1 is attached to the vertical part (second sleeve part) 10f.
are inserted (first and second sleeve parts 10e,
10f are connected by a connecting portion 10g). In order to ensure that the plug body 1 is supported by the vertical portion 10f, the plug body 1 must be supported by the vertical portion 10f.
0f, it is necessary to swage it after inserting it sufficiently to some extent as shown in FIG. However, even in this case, as can be seen from FIG. 3, the base (upper part) of the plug body 1 does not protrude beyond the horizontal part 10e. Therefore, as shown in FIG. 3, the resin member 1 is placed around the sleeve 10B.
Even if the plug body 8 is integrated, an increase in size due to the upward protrusion of the plug body 1 can be avoided.

Also, in the case of Fig. 3, as can be seen from the explanation of Fig. 2, the shield wire of code 6 is connected to the second
It is used in a folded state as in the case shown in the figure. Then, the circumferential groove 14,1 of the horizontal portion 10e
By caulking the caulking portion 10a sandwiched between the cords 5 and 5, the shield wire of the cord 6 and the horizontal portion 10e are electrically connected. Also in this case, the caulking portion 10
The influence of shape deformation due to caulking of grooves 14 and 1
As in the case of FIG. 2, the signal is not transmitted to the outside beyond 5.

[Effect of idea]

According to the present invention, since the cord and the plug body are reinforced by an approximately L-shaped reinforcing sleeve, there is no need to use an insulating resin material with a particularly rich reinforcing function to cover this connection part. Therefore, a wide range of materials can be used, and there is no need to pay particular attention to reinforcement, and the approximately L-shaped reinforcing sleeve as described above can be used as the first sleeve part and the second sleeve part. Since the plug body is arranged and connected in a substantially L-shape through a gap, the tip of the plug body inserted into the second sleeve part in the assembled state is closer to the axis of the first sleeve part. Also, since the first and second sleeve parts are formed in a so-called sleeve shape, the insertion penetration amount of the cord and plug body to be inserted into them is small. By adjusting the notch, the relationship between the cord and the plug body can be made appropriate regardless of the size of the notch. , by bending it in the opposite direction to the notch, so the reinforcing sleeve can be easily obtained.
Therefore, the processing and manufacturing process becomes simple, and the angles of the first and second sleeve parts can be adjusted by adjusting the amount of bending. By adjusting the length along the axis, the first and second
The butt gap between the sleeve parts can be easily adjusted, and the first sleeve part is sandwiched between a pair of circumferential grooves that reduce the wall thickness, so that crushing deformation is transmitted to the outside of the pair of circumferential grooves. By crimping the crimped part, the folded shield wire of the cord and the reinforcing sleeve are easily connected, and the crushing deformation of the crimped part when crimped is caused by the pair of peripheries. The cable will not be transmitted beyond the shaped groove to other parts of the first sleeve part, thereby preventing unnecessary deformation of parts other than the caulked part of the first sleeve part, thereby preventing the cord from being accidentally broken. It is possible to improve the reliability of the product by preventing such occurrences as much as possible.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional single-head plug, Fig. 2 is a partially cutaway perspective view of a single-head plug devised separately from the embodiment of the present invention, and Fig. 3 is an explanatory diagram of a single-head plug according to an embodiment of the present invention. FIG. 4 is a partially cutaway perspective view of the head plug, and FIG. 4 is a perspective view of the conductive sleeve before processing into a conductive sleeve having the width of FIG. 1...Plug body, 2, 20...Knob, 3...
...Chip, 3a...Chip shaft, 4...Sleeve,
5... Insulating ring, 6... Cord, 6a... Core wire, 6b... Shield wire, 7, 8, 18... Resin member, 10A, 10B... Conductive sleeve, 11
...Hole, 12...Mounting hole.

Claims (1)

[Claims for Utility Model Registration] A conductive reinforcing sleeve in which a conductive first sleeve part and a conductive second sleeve part, which are arranged in a substantially L shape with each other through a gap, are connected by a conductive connecting piece. , a conductive reinforcing sleeve obtained by bending a straight conductive sleeve in a direction opposite to the notch at a part of the straight conductive sleeve;
A cord and a plug main body whose respective tip portions are inserted in abutting state, the conductive reinforcing sleeve, and mutually opposing ends of the cord and the plug are integrally fixed in an embedded state by an insulating resin member. The cord has a core wire housed in a sheath and a shield wire outside the core wire, and a tip of the shield wire projects outward from an end of the sheath and extends rearwardly. The second sleeve is inserted into the first sleeve part in a folded state, and is formed in the first sleeve part so that the wall thickness of the first sleeve part is thinned circumferentially.
The shield wire is electrically connected to the first sleeve portion by the caulking of the caulking portion which is sandwiched between the two circumferential grooves and prevents crushing deformation in the radial direction from being transmitted to the outside of the circumferential grooves. The plug body has a conductive plug sleeve as a ground electrode, and the plug sleeve is inserted into the second sleeve part in a state where it is electrically connected to the second sleeve part. Features a single head plug.