JP6217464B2 - Cable with connector - Google Patents

Description

  The present invention relates to a cable with a connector.

  A molded product obtained by pre-molding a metal terminal with a resin and over-molding with a resin so as to surround the pre-molded product is known (for example, see Patent Document 1).

JP 2006-15618 A

  When a connector is attached to a terminal of a cable including a plurality of signal wires, it is required that the plurality of signal wires are arranged in parallel at a predetermined pitch and electrically connected to the connector terminals. However, it is a difficult task to connect a plurality of signal wires exposed from the jacket at the end of the cable in parallel at a predetermined pitch and connect them to terminals such as a substrate all together while maintaining that state. there were.

  An object of the present invention is to provide a connector-equipped cable having a structure in which a plurality of signal wires can be easily connected together by arranging them in parallel at a predetermined pitch.

A cable with a connector that solves the above problems is a cable in which a plurality of signal wires are accommodated inside the jacket,
A connector-connected cable having a connector connected to an end of the cable,
The connector has a wire fixing part and a terminal part connected to each other,
A plurality of the signal wires include a first resin that configures the wire fixing portion at a location other than the tip portion in a state where portions extending outward from the end of the jacket are arranged in a plane at a predetermined pitch To maintain the parallel state,
The terminal portion includes a planar circuit portion electrically connected to the plurality of signal wires, and a plug portion including a plurality of parallel electrical contacts and connected to a connection destination of the cable with the connector. And each of the electrical contacts and the planar circuit portion are electrically connected,
The wire fixing portion and the planar circuit portion are covered with a second resin.

  The cable with a connector according to the present invention can be easily and collectively attached with a plurality of signal wires arranged in parallel at a predetermined pitch.

It is a perspective view showing one embodiment of a cable with a connector. It is sectional drawing which shows the cable part of FIG. It is a perspective view which shows the state before connecting an electric wire fixing | fixed part and a terminal part among the processes which manufacture the cable with a connector of FIG. It is a top view which shows the planar circuit part with which a terminal part is provided. It is a perspective view which shows the state after connecting an electric wire fixing | fixed part and a terminal part among the processes which manufacture the cable with a connector of FIG. It is a perspective view which shows the state which attached the 2nd board | substrate among the processes which manufacture the cable with a connector of FIG. It is a perspective view which shows the state which connected the 2nd board | substrate among the processes which manufacture the cable with a connector of FIG. It is a perspective view which shows the state which attached the light emitting element on the 2nd board | substrate among the processes which manufacture the cable with a connector of FIG. It is a perspective view which shows the state which covered the planar circuit part with 3rd resin among the processes which manufacture the cable with a connector of FIG. It is a figure which shows the cable with a connector of a different form from FIG. 1, and is a perspective view which shows the state except the 2nd resin. It is a perspective view which shows the form at the time of attaching a 2nd board | substrate on 3rd resin.

[Outline of Embodiment of the Present Invention]
First, an outline of an embodiment of the present invention will be described.
One embodiment of a cable with a connector according to the present invention,
(1) a cable in which a plurality of signal wires are accommodated inside the jacket;
A connector-connected cable having a connector connected to an end of the cable,
The connector has a wire fixing part and a terminal part connected to each other,
A plurality of the signal wires include a first resin that configures the wire fixing portion at a location other than the tip portion in a state where portions extending outward from the end of the jacket are arranged in a plane at a predetermined pitch To maintain the parallel state,
The terminal portion includes a planar circuit portion electrically connected to the plurality of signal wires, and a plug portion including a plurality of parallel electrical contacts and connected to a connection destination of the cable with the connector. And each of the electrical contacts and the planar circuit portion are electrically connected,
The wire fixing portion and the planar circuit portion are covered with a second resin.
According to the configuration of (1), the electric wire fixing portion is configured in a state in which portions of the plurality of signal wires extending outward from the end of the outer jacket of the cable are arranged in a plane at a predetermined pitch. It is covered with one resin. As a result, when connecting a plurality of signal wires to the planar circuit portion, they can be easily and collectively connected while maintaining a predetermined pitch. Furthermore, the planar circuit portion to which the signal wire is connected is covered and protected by the second resin together with the wire fixing portion.

(2) A plurality of the signal wires and the planar circuit portion are covered with a third resin,
The cable with connector according to (1), wherein the third resin is covered with the second resin.
According to the configuration of (2), since the planar circuit portion and the plurality of signal wires connected to the planar circuit portion are covered with the third resin, the plurality of signal wires and the plane are covered. The connection portion with the circuit unit is protected and the connection state is maintained. Furthermore, the third resin is covered with the second resin together with the first resin (electric wire fixing portion) to form a connector structure that is integrally protected.

(3) The cable with connector according to (2), wherein one of the first resin and the third resin is an ultraviolet curable resin and the other is a thermoplastic resin.
According to the configuration of (3), one is cured by irradiating with ultraviolet rays, and the other is cured by cooling a high-temperature resin. That is, since both are different in the curing method, it is difficult to influence the ultraviolet rays and heat when the resin molded earlier is molded later.

(4) The cable with connector according to (2), wherein both the first resin and the third resin are ultraviolet curable resins.
According to the structure of (4), since it can harden | cure by each irradiating an ultraviolet-ray, it is hard to produce the problem of a heat | fever at the time of resin molding.

(5) The cable with connector according to (2), wherein the first resin and the third resin are both thermoplastic resins, and the melting point of the third resin is lower than the melting point of the first resin.
According to the configuration of (5), when the third resin is molded after the wire fixing portion is molded (the first resin is cooled and solidified), the resin constituting the wire fixing portion is hardly softened by the heat of the third resin.

(6) The planar circuit unit includes a first substrate and circuits formed on both surfaces of the first substrate,
The electric wires including the signal wires are divided into two groups and arranged in parallel, one group of the two groups is connected to one surface of the first substrate, and the other group of the two groups is the first group. The cable with a connector according to (1), which is connected to the other surface of one substrate.
According to the structure of (6), even if the electric wires including a plurality of signal wires are divided into two groups and arranged in parallel, the arrangement state is stably maintained by the electric wire fixing portion made of the first resin. It can be arranged on both surfaces of the first substrate with an accurate pitch and connected to the circuit at once.

(7) The cable has a collective shield layer that collectively covers the plurality of signal wires, the outer surface of the first resin has a groove, and the twisted collective shield layer fits into the groove and The cable with a connector according to (1), which is connected to a ground circuit of the planar circuit unit or a shield of the plug unit through an outer surface of the first resin.
According to the configuration of (7), the shield layer of the cable is connected to the ground circuit by accommodating and holding the portion of the collective shield layer that extends outward from the end of the jacket of the cable in the groove of the wire fixing portion. be able to.

(8) The planar circuit unit includes a first substrate to which a plurality of the signal wires are electrically connected,
The connector further includes a second substrate,
The cable with connector according to (1), wherein the second board is electrically connected to the first board.
According to the structure of (8), since the 2nd board | substrate which can be used also for uses other than signal transmission is provided separately from the 1st board | substrate with which the electric wire for signals was connected, providing a cable with a multifunctional connector Can do.

(9) The cable with connector according to (8), wherein the second substrate is disposed on the first resin and covered with the second resin.
According to the structure of (9), while being able to arrange | position a 2nd board | substrate outside the location which fixes the electric wire for signals, a 2nd board | substrate can also be covered and protected by a 2nd resin.

(10) The planar circuit unit includes a first substrate to which a plurality of the signal wires are electrically connected,
The connector further includes a second substrate,
The cable with a connector according to (2), wherein the second substrate is electrically connected to the first substrate, disposed on the third resin, and covered with the second resin.
According to the structure of (10), while being able to arrange | position a 2nd board | substrate outside the location which connects the electric wire for signals to a planar circuit part, a 2nd board | substrate can also be covered and protected by 2nd resin.

(11) The cable with a connector according to (9) or (10), wherein a light emitting unit is mounted on the second substrate.
According to the configuration of (11), the connector can have a light emitting function.

(12) The cable with a connector according to (11), wherein the light emitting unit is exposed on a surface of the connector.
According to the structure of (12), although the 2nd board | substrate is covered with 2nd resin, since the light emission part is exposed, the light emission state can be visually recognized reliably.

[Details of the embodiment of the present invention]
Hereinafter, an example of an embodiment of a cable with a connector will be described with reference to the drawings. In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.

[First Embodiment]
FIG. 1 is a perspective view showing an appearance of a connector-attached cable according to the first embodiment.
As shown in FIG. 1, the cable with connector 1 has a cable 2 and a connector 3. A connector 3 is connected to the end of the cable 2. A plug portion 4 is provided at the tip of the connector 3, and the rear side of the plug portion 4 of the connector 3 is covered with a second resin 5. The plug part 4 is a part connected to the connection destination (receptacle etc.) of the cable 1 with a connector. The connector 3 has a light emitting unit 6. A part of the light emitting portion 6 is not covered with the second resin 5 and is exposed on the surface of the connector 3.

FIG. 2 is a cross-sectional view of the cable 2.
As shown in FIG. 2, the cable 2 has a plurality (16 in this example) of signal wires 21 at the center of the cross section. In addition to the signal wire 21, the cable 2 has an insulated wire 22 used for a power supply wire and a grounding wire. The signal wires 21 and the insulated wires 22 are collectively covered with a collective shield layer 24. The collective shield layer 24 is covered with an outer cover 25.

  The signal wire 21 in this example is preferably a coaxial wire having a center conductor 21a, an inner insulating layer 21b, an outer conductor 21c, and a covering layer 21d. However, the signal wire 21 may be an insulated wire including a central conductor and a covering layer. The signal wire 21 transmits differential signals, for example, in pairs.

  The collective shield layer 24 is formed by braiding or transversely winding a large number of metal wires such as tinned annealed copper wires. The jacket 25 is made of an insulating resin such as polyvinyl chloride.

FIG. 3 shows the internal configuration of the connector 3 together with the cable 2.
As shown in FIG. 3, at the end of the cable 2, the jacket 25 is removed by a predetermined length, and the signal wire 21 extends outward from the jacket 25 of the cable 2 and is exposed. In the exposed portion, the tip end of the signal wire 21 is subjected to terminal processing so that the central conductor 21a and the outer conductor 21c are exposed stepwise. Further, the signal wire 21 is covered with the first resin 11 constituting the wire fixing portion 7 at a portion other than the tip portion in the exposed portion. When the cable 2 includes an insulated wire 22 other than a signal line application (such as a power supply application), the insulated wire 22 is also covered with the first resin 11 in parallel by performing a terminal treatment exposing the central conductor. FIG. 3 shows an example in which the signal wires 21 are arranged in the upper stage and the insulated wires 22 are arranged in the lower stage.

The signal wires 21 may be arranged in such a manner that portions extending outward from the jacket 25 of the cable 2 are divided into two groups and are arranged in parallel with each other at a predetermined pitch, and the groups are parallel to each other.
The signal wires 21 are molded with the first resin 11 in such a state that they are arranged in a predetermined arrangement. The signal wires 21 (and the insulated wires 22) are covered with the first resin 11 so that the arrangement state is fixed.

The material of the first resin 11 constituting the wire fixing portion 7 is an ultraviolet curable resin or a thermoplastic resin. For example, an ultraviolet curable resin made of urethane acrylate resin or epoxy acrylate resin, or a thermoplastic resin made of polyester, polyolefin or polyamide.
Further, a concave portion 72 for arranging a second substrate 71 and a light emitting portion 6 described later is formed on one of the upper and lower surfaces (upper surface in this example) of the wire fixing portion 7.

  As shown in FIG. 3, the terminal portion 8 of the connector 3 includes a planar circuit portion 81 and a plug portion 4. The planar circuit unit 81 is electrically connected to the signal wire 21 and the insulated wire 22. The plug part 4 is a part connected to the connection destination of the connector-equipped cable 1. A planar circuit portion 81 is inserted and connected to the rear side of the plug portion 4. The plug part 4 has a plurality of electrical contacts 83 arranged in parallel on the rear side thereof. The plurality of electrical contacts 83 are electrically connected to the circuit of the planar circuit unit 81.

FIG. 4 is a plan view showing the planar circuit unit 81.
As shown in FIG. 4, the planar circuit unit 81 includes a first substrate 811 and circuits formed on both surfaces of the first substrate 811. FIG. 4 shows a circuit on one surface (upper surface) of the first substrate 811, but the circuit on the other surface (lower surface) of the first substrate 811 has a substantially similar configuration.
The circuit formed on the first substrate 811 includes a signal pad 811a, a ground pad 811b, and a light emitting and feeding pad 811c. FIG. 4 shows a circuit on one surface (upper surface) of the first substrate 811, but the circuit on the other surface (lower surface) of the first substrate 811 has a substantially similar configuration. When the electric wire connected to the lower surface is only an insulated wire, the insulated wire pad is placed at the position of the signal pad, and the ground pad 811b is unnecessary.

A plurality of signal pads 811 a are formed in parallel so as to correspond to the signal wires 21. The center conductor 21a of each signal wire 21 is soldered and electrically connected to the signal pad 811a of the first substrate 811. When the first substrate 811 is inserted into the plug portion 4 from the rear (see FIG. 3), the signal pads 811a are in contact with and electrically connected to the electrical contacts 83 of the plug portion 4. The plug-side tip of the signal pad 811a may be an electrical contact 83.
The ground pad 811 b is formed so as to extend in the parallel direction of the signal wires 21. The ground pad 811b is electrically connected to the outer conductor 21c of each signal wire 21 by soldering.
The circuit of the planar circuit unit 81 also includes a light emitting / feeding pad 811c for supplying power to the light emitting unit 6 described later.

Next, manufacturing steps after the step of connecting the wire fixing portion 7 and the terminal portion 8 of the cable with connector 1 according to the present embodiment will be described with reference to FIGS.
First, in the direction of arrow A in FIG. 3, the planar circuit portion 81 of the terminal portion 8 is inserted between the signal wire 21 and the insulated wire 22 arranged in two groups above and below the wire fixing portion 7, The state shown in FIG. In the state of FIG. 5, each electric wire is soldered to the planar circuit unit 81.
Specifically, the center conductors 21a of the signal wires 21 are soldered to the signal pads 811a on both surfaces of the first substrate 811. Further, the outer conductor 21c of each signal wire 21 is soldered to the ground pad 811b.
As described above, the wire fixing portion 7 and the terminal portion 8 are electrically connected to each other. Moreover, even if the plurality of signal wires 21 and insulated wires 22 are divided into two groups and arranged in parallel as in this example, the arrangement state is stably maintained by the wire fixing portion 7 made of the first resin. In addition, it can be arranged on both surfaces of the first substrate 811 with an accurate pitch and can be collectively connected to the circuit.

Next, as shown in FIG. 6, the second substrate 71 is disposed in the concave portion 72 of the wire fixing portion 7. The second substrate 71 is, for example, a printed circuit board, and includes, for example, a light emitting component 6a such as an LED that is a part of the light emitting unit 6, a circuit element such as a resistance element, and a pad 71a.
Subsequently, as shown in FIG. 7, the pad 71a of the second substrate 71 and the circuit of the planar circuit portion 81 are electrically connected by an insulating wire 71b.
Further, as shown in FIG. 8, a light guide (for example, a plastic light guide) 6b that mounts a light emitting component 6a, which is a part of the light emitting section 6, on the second substrate 71 and guides light to the outside is mounted thereon. Is implemented.
Next, as shown in FIG. 9, the third resin 13 is molded so as to cover a part of the planar circuit portion 81 and the second substrate 71. Further, by molding the second resin 5 around the periphery, the form shown in FIG. 1 is obtained. Thereby, the electric wire fixing | fixed part 7 and the terminal part 8 become integral. Since the planar circuit portion 81 and each electric wire (signal wire 21 and insulated wire 22) connected to the planar circuit portion 81 are covered with the third resin 13, each electric wire and the planar circuit portion 81 The connection location is protected and the connection state is maintained. Further, the third resin 13 is covered with the second resin 5 together with the electric wire fixing portion 7 made of the first resin 11 to form a connector structure that is integrally protected.
The second resin 5 is formed so that the upper surface of the light emitting unit 6 (the upper surface of the light guide 6b) is exposed on the surface of the connector 3 and at least the tip of the plug unit 4 is not covered.

Moreover, the material of the 1st resin 11 and the 3rd resin 13 can select an ultraviolet curable resin and a thermoplastic resin suitably.
For example, when one of the first resin 11 and the third resin 13 is an ultraviolet curable resin and the other is a thermoplastic resin, one is filled with a resin in a transparent mold and then irradiated with ultraviolet rays. The other is cured, and the mold is filled with a high-temperature resin and then solidified by cooling. Since resins having different characteristics are used properly, it is difficult to influence the ultraviolet rays and heat when the resin molded earlier is molded later.
Further, when both the first resin 11 and the third resin 13 are ultraviolet curable resins, they can be cured by irradiating with ultraviolet rays, respectively. Less prone to heat problems.
When both the first resin 11 and the third resin 13 are thermoplastic resins, it is preferable that the melting point of the third resin 13 is lower than the melting point of the first resin 11. Thereby, when the third resin 13 is molded after the wire fixing portion 7 is molded (the first resin 11 is cooled and solidified), the resin constituting the wire fixing portion 7 is hardly softened by the heat of the third resin 13.

As described in detail above, in the cable with connector 1 of the present embodiment, the portions of the plurality of signal wires 21 that extend outward from the end of the jacket 25 of the cable 2 are arranged in parallel in a plane at a predetermined pitch. In this state, it is covered with the first resin 11 constituting the electric wire fixing part 7.
Thus, when connecting the plurality of signal wires 21 to the planar circuit portion 81, they can be easily connected together while maintaining a predetermined pitch. Further, the planar circuit portion 81 to which the signal wire 21 is connected is covered and protected by the second resin 5 together with the wire fixing portion 7.

  Furthermore, the cable with connector 1 of this embodiment includes a second substrate 71 that can be used for purposes other than signal transmission, in addition to the first substrate 811 to which the signal wires 21 are connected. By providing the second substrate 71, the multi-function connector-equipped cable 1 can be provided. In this example, the light emitting unit 6 is mounted on the second substrate 71 and has a light emitting function. The second substrate 71 is disposed on the outer surface of the electric wire fixing portion 7 to which the signal electric wire 21 is fixed. It has become easier. Thereby, the light emission state of the light emission part 6 can be reliably recognized in the state which protected the 1st board | substrate 811 and the 2nd board | substrate 71 reliably.

[Second Embodiment]
Next, a connector-equipped cable according to the second embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same component as the component of the cable 1 with a connector of the above-mentioned 1st Embodiment, and the description is abbreviate | omitted.
As shown in FIG. 10, the cable with connector 1 a of the second embodiment has a groove 11 a on the outer surface of the first resin 11, and extends outward from the end of the jacket 25 of the cable 2 in the collective shield layer 24. A portion of the metal strand 24a is twisted and bundled and fitted into the groove 11a. The twisted and bundled metal wires 24a are connected to a ground circuit (for example, a ground pad 811b) of the first substrate 811 of the planar circuit portion 81. Thereby, the shield of the cable 2 and the connector 3 is connected. Then, the third resin 13 is molded around the planar circuit portion 81 so as to cover the bundled metal wires 24a and the soldered portion.
When the plug portion 4 includes the connector shield (metal shell) 41, the metal strand 24a of the collective shield layer 24 may be connected to the rear end 41a or the side surface 41b of the connector shield 41 by soldering.

  According to the connector-attached cable 1a of the second embodiment, the collective shield layer 24 passes through the outer surface of the first resin 11 to the ground pad 811b of the planar circuit portion 81 or the connector shield 41 of the plug portion 4. Connected. When the collective shield layer 24 is twisted, its outer diameter is not likely to be constant, and if it is molded as it is, burrs may occur. However, in the present invention, since the end portion of the collective shield layer 24 is accommodated and held in the groove 11a, no burrs are generated when the collective shield layer is molded.

[Third Embodiment]
Next, a connector-equipped cable according to a third embodiment will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same component as the component of the cable 1 with a connector of the above-mentioned 1st Embodiment, and the description is abbreviate | omitted.
As shown in FIG. 11, the cable with connector 1 b according to the third embodiment has a form in which the second substrate 71 is attached on the third resin 13. In the form of FIG. 11, the second substrate 71 is disposed on both the first resin 11 and the third resin 13.
In the cable 1b with a connector of the third embodiment, a recess 131 is formed in the third resin 13 so that the upper side of the light emitting and feeding pad 811c of the first substrate 811 of the planar circuit portion 81 is opened. And the circuit of the 2nd board | substrate 71 and the planar circuit part 81 is electrically connected through the recessed part 131 with the insulated wire 71b.
According to the cable 1b with a connector of the third embodiment as described above, the second substrate 71 can be disposed outside the location where the signal wire 21 is connected to the planar circuit portion 81, and the second substrate 71 is also second. It can be covered and protected by the resin 5.

DESCRIPTION OF SYMBOLS 1, 1a, 1b Cable with connector 2 Cable 3 Connector 4 Plug part 5 Second resin 6 Light emitting part 6a Light emitting part 6b Light guide 7 Electric wire fixing part 8 Terminal part 11 First resin 11a Groove 13 Third resin 21 Signal electric wire 21a Center conductor 21b Inner insulation layer 21c Outer conductor 21d Cover layer 22 Insulated wire 24 Collective shield layer 24a Metal wire 25 Outer jacket 41 Connector shield (metal shell)
41a Rear end 41b Side surface 71 Second substrate 71a Pad 71b Insulated wire 72 Recessed portion 81 Planar circuit portion 83 Electrical contact 131 Recessed portion 811 First substrate 811a Signal pad 811b Ground pad 811c Light emitting power feeding pad

Claims (12)

A cable in which a plurality of signal wires are housed inside the jacket;
A connector-connected cable having a connector connected to an end of the cable,
The connector has a wire fixing part and a terminal part connected to each other,
A plurality of the signal wires include a first resin that configures the wire fixing portion at a location other than the tip portion in a state where portions extending outward from the end of the jacket are arranged in a plane at a predetermined pitch To maintain the parallel state,
The terminal portion includes a planar circuit portion electrically connected to the plurality of signal wires, and a plug portion including a plurality of parallel electrical contacts and connected to a connection destination of the cable with the connector. And each of the electrical contacts and the planar circuit portion are electrically connected,
A cable with a connector, wherein the electric wire fixing portion and the planar circuit portion are covered with a second resin. A plurality of the signal wires and the planar circuit portion are covered with a third resin,
The cable with a connector according to claim 1, wherein the third resin is covered with the second resin.   The cable with a connector according to claim 2, wherein one of the first resin and the third resin is an ultraviolet curable resin and the other is a thermoplastic resin.   The cable with a connector according to claim 2, wherein both the first resin and the third resin are ultraviolet curable resins.   The cable with a connector according to claim 2, wherein both the first resin and the third resin are thermoplastic resins, and the melting point of the third resin is lower than the melting point of the first resin. The planar circuit unit includes a first substrate and circuits formed on both surfaces of the first substrate,
The electric wires including a plurality of the signal wires are divided into two groups and arranged in parallel, and one group of the two groups is connected to one surface of the first substrate, and the other group of the two groups. The cable with a connector according to claim 1, wherein is connected to the other surface of the first substrate.   The cable has a collective shield layer that collectively covers a plurality of the signal wires, the outer surface of the first resin has a groove, and a twisted collective shield layer fits into the groove to form the collective shield layer The cable with a connector according to claim 1, wherein the cable is connected to a ground circuit of the planar circuit portion or a shield of the plug portion through the outer surface of the first resin. The planar circuit unit includes a first substrate to which a plurality of the signal wires are electrically connected,
The connector further includes a second substrate,
The cable with a connector according to claim 1, wherein the second board is electrically connected to the first board.   The cable with a connector according to claim 8, wherein the second substrate is disposed on the first resin and covered with the second resin. The planar circuit unit includes a first substrate to which a plurality of the signal wires are electrically connected,
The connector further includes a second substrate,
The cable with a connector according to claim 2, wherein the second substrate is electrically connected to the first substrate, disposed on the third resin, and covered with the second resin.   The cable with a connector according to claim 9 or 10, wherein a light emitting unit is mounted on the second substrate.   The cable with a connector according to claim 11, wherein the light emitting portion is exposed on a surface of the connector.

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