JPH026609Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to a connector plug for cables. More specifically, it relates to a structure for connecting a conductor of a cable sheath to a pin of a connector plug.

(2) Prior art In this type of connector plug, a large number of connector pins are insert-molded and fixed into a pin holder made of insulating material, and the conductor of the cable sheathing wire is connected to the connection part on one side of the connector pins. connected,
A mating connector jack is connected to the connection part on the opposite side. Furthermore, a metal shell is attached to the outer periphery of this pin holder to guide the connection insertion with the connector jack and to electrically shield the cable.If necessary, an insulating material is attached to the outer circumference of the pin holder to reinforce and protect the connector plug. A cover is attached or integrated with the mold.

An example of a conventional connector plug is shown in FIG.
In the figure, a is a longitudinal sectional view, and b is a right side view. In the figure, 1 is a cable, and 2 is five coated wires constituting the cable, which are multi-core conductors (for example, AWG #28 with a 7/0.127 configuration) conductor coated with insulation. 3 is a shielded wire. 4 is a connector pin, and there are five connector pins corresponding to the five covered wires 2. These connector pins 4 are disposed close to each other and integrally molded into the pin holder 5, as shown in FIG. 2b. Connector pin 4 4a is cable sheathed wire 2
4b is a connecting portion for connecting the conductor of the connector, and 4b is a connecting portion for insertion into the connector jack. The connecting portion 4a of the connector pin and the conductor of the cable sheath 2 are connected by soldering. 6 is a metal shell attached and fixed to the outer periphery of the pin holder 5;
It serves as a connection insertion guide with the connector jack and as an electrical shield for the cable. The shield wire 3 is electrically connected to the metal shell 6. 7 is an insulating material cover for reinforcement and protection, and metal shell 6
is attached to. Reference numeral 8 denotes a guide protrusion provided on the metal shell 6 for connection and insertion with the connector jack.

A drawback of this conventional connector plug is that the connection between the connector pin 4 and the conductor of the cable sheath 2 is performed by soldering. Although the work of soldering the conductors of the cable sheathed wire 2 to the multiple connector pins 4 arranged close to each other on the pin holder 5 is done manually, the force load applied to each sheathed wire 2 becomes uniform. As such, it takes skill and time to properly adjust the length of each covered wire 2 and solder it.
It is considered a tedious task. Often covered wire 2
This results in an uneven force load with deflection and tension, and force is applied to the tensile coated wire, and the pulling force when inserting and removing the connector plug may cause the wire to break at the soldering base due to the bending action. There is.

(3) Problems to be solved by the present invention The present invention is capable of easily and quickly connecting each cable sheathing wire to a connector pin without requiring any skill. The object of the present invention is to provide a connector plug with a simple structure that enables stable and reliable connection without causing uneven force loads on the wires.

(4) Means for solving the problem The present invention connects the cable-sheathed conductor and connector plug without using the conventional soldering method and without removing the conductor's covering in advance.
It uses a pressure welding method that connects all covered wires at the same time. This pressure contact method connects a covered wire by pressure contacting a U-shaped contact, and is a well-known technology previously developed by 3M Company in the United States. This pressure welding method is widely used in ID type (ID: Insulation Displacement) connectors for electronic devices and has been commercialized widely, but cable connectors have a large structural difference from this ID type connector, so this method is used. has not been adopted yet.

In the present invention, the structure of the pin and pin holder of the cable connector plug is newly devised to enable connection by this pressure welding method. first,
The connector pin has a cylindrical connection part that presses the cable sheathing wire to give it elasticity, and a V-shaped socket at the tip of the cylindrical shape to make it easier to receive the sheathed wire. A groove with a width slightly smaller than the outer diameter of the conductor of the covered wire was provided from the bottom of the socket in the axial direction of the cylinder, and the covering of the covered wire was cut open to form a U-shaped contact that was pressed against the conductor. Next, the pin holder has a through hole for passing the cable sheath in the direction of the hole axis near the inside of the connector pin insertion hole, and then a connector pin insertion hole from the middle of this through hole almost perpendicular to the through hole axis. The bottom surface is the surface that crosses the surface and reaches the side peripheral surface of the pin holder, and has a width slightly smaller than the outer diameter of the cable sheathing wire.
and including each central axis of the through hole and pin insertion hole,
A slit groove was provided that cut through the side peripheral surface of the pin holder and the end surface on the connector jack side.

(5) Effect To connect a cable sheath to the connector plug of the present invention, first insert the cable sheath from the cable-side entrance of the pin holder through-hole, and make sure that the sheath is not bent or pulled before passing through. Bend it at right angles from the midway exit of the hole and fit it into the slit so that it touches the bottom surface. In this case, as described above, the width of the slit groove is made slightly smaller than the outer diameter of the cable sheath, so that the cable sheath is held in contact with the bottom surface of the slit groove. Once each cable sheath is held in contact with the bottom of its respective slit groove by the same operation, each connector pin is then inserted into each pin insertion hole, and the bottom part of the V-shaped socket at the tip is inserted. Temporarily set it by stopping it at a position where the opening of the groove comes into contact with the cable sheath being held. Once all the connector pins have been temporarily set, use a simple manual pressure welding tool to simultaneously press the heads of the jack-side connection parts of each connector pin, and insert the conductor of the cable sheath into the slot of the connector pin. Can be pressure-welded. Subsequent installation of the metal shell,
Since the protective cover is attached in the same manner as before, the explanation will be omitted.

(6) Embodiments The present invention will be specifically explained below with reference to embodiments illustrated in the drawings. FIG. 1 shows an embodiment of the present invention, in which FIG. 1A is a longitudinal cross-sectional view, and FIG. 1B is a right side view. In the figure, the same parts as in FIG. 2 are designated by the same reference numerals. Reference numeral 9 denotes a connector pin according to the present invention, and the sectional view a shows a state in which the cable sheathed wire 2 is connected by pressure welding. Details of the connector pin 9 will be explained with reference to FIG. In the figure, a shows a front view, and b shows a left side view. The cable side connection part 9a of the connector pin 9 has a cylindrical shape 12, and a V-shaped socket 13 is formed at the tip thereof, and from the bottom in the pin axis direction, the diameter is slightly smaller than the outer diameter of the conductor of the cable sheathed wire 2. A groove 14 with a small width is cut. 10 is a pin holder according to the present invention, the details of which are shown in FIG. In the figure, a is a longitudinal sectional view, and b is a right side view. 15 is a hole into which the connector pin 9 is inserted, and 16 is a hole through which the covered wire 2 is passed in the axial direction of the pin holder 10, which is bored near the inside of the pin insertion hole 15. 17
is a slit groove made for bending the coated wire 2 inserted into the through hole 16 almost at right angles from the middle thereof across the pin insertion hole 15, and is formed on the side peripheral surface of the pin holder 10 and the connector jack. It is cut through to the side end face, and the groove width is made slightly smaller than the outer diameter of the covered wire 2.

To connect the cable coated wire 2 to the pin 9 of the connector plug, pass the cable coated wire 2 through the through hole 16 of the pin holder 10, make sure that the coated wire 2 is not bent or pulled, and insert the coated wire 2 into the pin 9 of the connector plug. Through hole 1
It is bent at right angles from the midway exit of the slit 6, inserted into the slit groove 17, and held in contact with the bottom surface of the groove. Next, insert the connector pin 9 into the pin insertion hole 15 and park it at a position where the opening of the split groove 14 at the bottom of the V-shaped socket 13 at the tip abuts the covered wire 2 to temporarily set it. Make it. After this temporary setting operation is completed for all connector pins 9, the sheathing of the covered wires 2 is removed by simultaneously pressing the heads of the jack side connection parts 9b of each connector pin using a simple manual pressure welding tool. Then, the groove 14 is pressed against the conductor. After the connector pin 9 is pressed against the covered wire 2, the covered wire 2 protruding outside the slit groove 17 is cut along a line on the side peripheral surface of the pin holder 10. Next, the metal shell 6 is attached to the pin holder 10.
Finally, a reinforcing and protective cover 11 is integrally molded.

Although this embodiment shows an example of a round connector plug, the present invention can be similarly applied to other flat cable connector plugs.

(7) Effects of the invention As stated above, the invention has the following effects.

(a) A reliable connection can be guaranteed using a simple manual pressure welding tool, regardless of the skill level of the operator.

(b) Since bulk pressure welding connection is possible, the number of wiring steps can be significantly reduced as the number of wires increases.

(c) Since the entire cable sheathing wire can be connected with a uniform force load, it is extremely stable against external forces such as pulling and bending applied to the cable sheathing wire.

(d) The pressure welding connection between the cable conductor and the connector pin is airtight, so it has excellent corrosion resistance.
A semi-permanent connection can be guaranteed.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view and right side view showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view and right side view of a conventional connector plug, and Fig. 3 is an embodiment of the connector pin of the present invention. FIG. 4 is a longitudinal sectional view and a right side view showing one embodiment of the pin holder of the present invention. 1... Cable, 2... Cable covering wire, 3...
... Shield wire, 6 ... Metal shell, 9 ... Connector pin, 10 ... Pin holder, 11 ... Protective cover, 12 ... Cylindrical part of pin connection part, 13 ... V-shaped socket of pin connection part, 14... split groove, 15...
...Connector pin insertion hole, 16...Through hole, 17...
...slit groove.

Claims (1)

[Scope of utility model registration request] Insert and fix a large number of connector pins into a pin holder made of insulating material, connect the conductor of the cable sheath to one connection part of the connector pins, connect the mating connector jack to the connection part on the other side, and then In a connector plug in which a metal shell is attached to the outer periphery of the pin holder to guide insertion into a mating connector jack and to serve as an electrical shield for the cable;
The connector pin has a cylindrical connecting portion on the cable side, a V-shaped socket at its tip, and a diameter slightly smaller than the outer diameter of the conductor of the cable covering wire in the pin axis direction from the bottom of the V-shaped socket. Also, as the pin holder, a through hole is provided near the inner side of the connector pin insertion hole in the direction of the hole axis, through which the cable sheathing wire is passed, and a through hole axis is provided from the middle of the through hole. The bottom surface is a surface that crosses the connector pin insertion hole at a nearly right angle and reaches the side peripheral surface of the pin holder and has a width slightly smaller than the outer diameter of the cable sheathing wire, and the through hole and the connector pin difference. A connector plug characterized in that a slit groove is provided, which is cut through the center axis of each insertion hole and extends to the side peripheral surface of the pin holder and the end surface on the connector jack side.