JPH0945434A - Cable connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To directly connect plural cable conductors to an input/output terminal not via foreign material by forming an inside connection terminal and an outside connection terminal into respectively specified constructions in a connector composed of the inside connection terminal, the outside connection terminal, and an insulator. SOLUTION: A connector 1 is composed of one pin-like inside connection terminal 12 or more to which a cable conductor 30 is connected, a cylindrical outside connection terminal 14 which surrounds the inside connection terminal 12 and to which other cable conductor 40 is connected, and an insulator 6 provided between both. The inside connection terminal 12 is composed of a pin-like core portion 20 along whose peripheral face 20a the corresponding cable conductor 30 passing through the insulator 16 and extending runs, and a fixing portion 22 which fixes the cable conductor 30 by the tip portion of the pin-like core portion 20. The outside connection terminal 14 is composed of a cylindrical core portion 34 along whose inner peripheral face 34a the corresponding cable conductor 40 passing through the insulator 16 and extending runs, and a fixing portion 36 which fixes the cable conductor 40 by the tip portion of the cylindrical core portion 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cable connector used for connecting an electric cable with an electric device such as an AV device.

[0002]

2. Description of the Related Art Generally, it is known that the transmission characteristics of an electric cable used for electrical connection between electric devices depend largely on the material of a cable conductor that transmits an electric signal. Therefore, particularly in the electric cable used for electrical connection between the audio & visual equipment (hereinafter, referred to as AV equipment) among the electric equipment, deterioration of the audio signal and the video signal is prevented, and the good sound quality and High quality cable conductors, such as oxygen-free copper, are often used to obtain good image quality.

In these AV devices, since the electric cable is frequently attached and detached for adjustment and maintenance of the device, input / output terminals are often attached to the signal input / output section, which results in high quality. Since the cable conductor of No. 1 cannot be directly connected to the AV equipment, it is generally electrically connected to the AV equipment via the cable connector.

Conventionally, such a cable connector is arranged, for example, as shown in FIG. 9, so as to surround a pin-shaped internal connection terminal 12 to which a cable conductor is connected and the pin-shaped internal connection terminal 12. A cylindrical external connection terminal 14 to which other cable conductors are connected, an insulator 16 provided between the internal connection terminal 12 and the external connection terminal 14, and the connection terminals 12 and 14 and insulation. It consisted of an exterior cover 18 covering the body 16.

[0005]

In the cable connector 10 of this prior art, the cable is electrically connected to the AV equipment through the internal connection terminal 12 and the external connection terminal 14, and therefore, as described above. Even if high-quality oxygen-free copper or the like is used as the cable conductor, if the material of these connection terminals 12 and 14 is not of high quality, there is a problem that sound and video signals are deteriorated and sound quality and image quality are deteriorated. there were. As a result, in order to obtain good sound quality and image quality in the conventional cable connector 10, these connection terminals 12 and 14 also need to be formed of a high-quality material such as oxygen-free copper which is the same quality as the cable conductor. However, there is a problem that the manufacturing cost increases. These problems have occurred not only in the cable connector 10 having the shape shown in FIG. 9 but also in the cable connector having connection terminals of other shapes.

As one means for solving such a problem, the present inventors already have a substantially U-shaped electric contact portion 62 and a conductor crimping portion 64, as shown in FIG. In the connection terminal 60, a cable conductor folded portion 66 formed of a substantially arcuate notch is formed at the tip of the electric contact portion 62, and the cable conductor 30 made of a high quality material such as oxygen-free copper is formed in the folded portion 66. At the same time, the tip of the cable conductor 30 folded back at
We provide a "crimping structure for connection terminals", which is characterized by crimping and fixing with (see Japanese Patent Application No. 6-101304). According to the crimping structure of the connection terminal 60, since the cable conductor 30 is fixed while being exposed, the cable conductor 30 made of a high quality material can be directly connected to the input / output terminal of the electric device.

However, the shape of the input / output terminal provided in the AV equipment is not always the same, and the shape of the A
The shape of the cable connector is restricted by the shape of the input / output terminal provided in this device, which may vary depending on the V device and system. Considering this point, the AV device to which the connection terminal 60 having the crimping structure of the technique shown in FIG. 10 can be connected is limited to a speaker or an amplifier, and other devices such as a compact disc player (hereinafter, referred to as a CD player) and the like. This connection terminal 60 could not be used to connect to the device.

The cable conductor 30 which can be connected to the connection terminal 60 by the crimping structure shown in FIG.
Limited to one. For this reason, in the crimping structure shown in FIG. 10, for example, a cable having a plurality of cable conductors such as a coaxial cable is electrically isolated from each other by using one cable connector for each cable conductor. It was not possible to connect to one of the input / output terminals.

In view of the above points, an object of the present invention is to directly connect a plurality of cable conductors to an input / output terminal of an electric device without electrically connecting them to each other and to electrically connect them to each other. It is an object of the present invention to provide a cable connector capable of improving the reliability of dynamic connection and also capable of supporting a cable having a plurality of conductors.

[0010]

As a first means for solving the above problems, the present invention provides at least one pin-shaped internal connection terminal to which a cable conductor is connected,
A cylindrical external connection terminal that is arranged so as to surround this pin-shaped internal connection terminal and to which another cable conductor is connected,
In a cable connector composed of an insulator provided between these internal connection terminals and external connection terminals, the internal connection terminals are pins with corresponding cable conductors extending through the insulator being attached to the peripheral surface. And a fixing portion for fixing the cable conductor at the tip of the pin-shaped core portion,
Further, the external connection terminal, a cylindrical core portion having a corresponding cable conductor extending through the insulator along the inner peripheral surface,
The present invention provides a cable connector comprising a fixing portion for fixing a cable conductor at a tip end portion of the cylindrical core portion.

The present invention also provides, as a second means for solving the above-mentioned problems, in the above-mentioned first solving means, in particular, the fixing portion of the internal connection terminal is formed at the tip of the pin-shaped core portion. The cable conductor includes an insertion hole into which the folded back end of the cable conductor is inserted, and a portion surrounding the insertion hole. The tip end of the cable conductor is a pin-shaped core portion squeezing the portion surrounding the insertion hole. The present invention provides a cable connector characterized in that it is crimp-connected to.

Furthermore, the present invention is, as a third means for solving the above-mentioned problems, in the above-mentioned first problem-solving means, in particular, the fixing portion of the external connection terminal is at the tip of the cylindrical core portion. It consists of a ring that is fixed and attached to the cylindrical core so as to surround the cable conductor part that is folded back to the outer peripheral surface side of the cylindrical core, and the tip of the cable conductor is the outer circumference of this ring and the cylindrical core. It is intended to provide a cable connector characterized by being sandwiched between a surface and a crimp connection to a cylindrical core portion.

In this way, the cable conductor is passed through the insulator to be attached to the peripheral surface of the pin-shaped core portion of the internal connection terminal or the inner peripheral surface of the cylindrical core portion of the external connection terminal, and at the same time, the tip portion thereof is When fixed to each core, the cable conductor directly pulled out from the cable is fixed while being exposed at the electrical contact surface, so the cable conductor is directly connected to the input / output terminals of electrical equipment without interposing different materials. be able to. Therefore, the use of a material different from that of a high-quality cable conductor as the material of the connection terminal does not cause deterioration of electrical signals such as audio and video signals, and reliability of electrical connection is improved. In this case, the electrical connection is
It is performed directly by the cable conductor itself and does not depend on the pin-shaped core part or the cylindrical core part, so it does not depend on the material of these core parts, and the material of the core part is different from the cable conductor. Even if the electric signal does not deteriorate,
It is not always necessary to use the same high quality one as the cable conductor, and at the same time the manufacturing cost can be suppressed.

Further, when the corresponding cable conductors are attached and fixed to the pin-shaped core portion of the internal connection terminal and the cylindrical core portion of the external connection terminal, which are electrically insulated from each other by an insulator, one cable is formed. Multiple cables such as coaxial cables and multi-core cables can be directly connected to the input / output terminals of electrical equipment while keeping the multiple cable conductors electrically independent of each other with the connector, without degrading electrical signals. It can also be used for the electrical connection of cables with conductors. In particular, by setting the number, arrangement, and shape of the pin-shaped cores of the internal connection terminals according to the number of cable conductors and the shape of input / output terminals of electrical equipment, various cables and electrical equipment can be supported. For example, a cable conductor can be directly connected to an AV device such as a CD player.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 shows one embodiment of a cable connector 10 according to the present invention. It is shown to be a cable connector applied to core conductor cable 28. This cable connector 10
Is a pin-shaped internal connection terminal 12 to which one cable conductor 30 of the cable 28 is connected, and the other cable conductor 40 of the cable 28 which is arranged so as to surround the pin-shaped internal connection terminal 12 is connected. Cylindrical external connection terminal 14, internal connection terminal 12 and external connection terminal 14 of these
And an insulator 16 provided between and. 1 and 2, reference numeral 18 is an exterior cover that houses these connection terminals 12 and 14 and the insulator 16. The exterior cover 18 is formed of metal such as aluminum or molded plastic such as ABS. can do.

As shown in FIGS. 1 and 2, the internal connection terminal 12 comprises a pin-shaped core portion 20 and a fixing portion 22 for fixing the cable conductor 30 at the tip of the pin-shaped core portion 20. . The pin-shaped core portion 20 can be formed of, for example, a copper-based material such as phosphor bronze or tough pitch copper, aluminum, iron, or the like. Further, in the illustrated embodiment, the fixing portion 22 is, in particular, as shown in FIG. 2, an engagement hole 24 formed at the tip of the pin-shaped core portion 20, and a portion 2 surrounding the engagement hole 24.
It is shown to consist of six and six.

The cable conductor 30 corresponding to the internal connection terminal 12 of the cable 28 extends through the insulator 16 and particularly the pin-shaped core portion 20 as shown in FIGS. 1A and 1B. Along the peripheral surface 20a. Therefore, the cable conductor 30 may be held in a shape that conforms to the shape of the pin-shaped core portion 20, and may be exposed on an electrical contact surface that transmits an electrical signal between the input / output terminals of an electric device (not shown). it can. The cable conductor 30 is preferably made of a high quality material such as oxygen-free copper so that the electric signal is not deteriorated and the sound quality and the image quality are not affected. The reason why the cable conductor 30 is attached to the peripheral surface 20a of the pin-shaped core portion 20 is that the peripheral surface 20a portion comes into contact with the female electrical contact surface of the input / output terminal of the electric device (not shown).

The tip of this cable conductor 30 is shown in FIG.
As shown in (A) and (B), it is fixed to the pin-shaped core portion 20 by the fixing portion 22. Specifically, FIG. 1 (A)
As shown in (B), the tip of the cable conductor 30 along the pin-shaped core portion 20 is folded back at the tip of the portion 26 surrounding the insertion hole 24 and inserted into the insertion hole 24. A portion 26 surrounding the engagement hole 24 is squeezed to be crimp-connected to the pin-shaped core portion 20.

In this way, the cable conductor 30 directly drawn from the cable 28 extends to the tip of the cable connector 10 while being fixed, and is exposed on the electrical contact surface along the peripheral surface 20a of the pin-shaped core portion 20. Therefore, the cable conductor 30 can be directly connected to an input / output terminal of an electric device such as an AV device (not shown) without interposing a different material. Therefore, the use of a material different from that of the high-quality cable conductor 30 as the material of the connection terminal does not cause deterioration of electrical signals such as audio and video signals.
The reliability of the electrical connection is improved.

As shown in FIGS. 1 and 2, the insulator 16 has a substantially frame shape, and is fitted between the internal connection terminal 12 and the external connection terminal 14, and these internal connection terminals 1
2 and the external connection terminal 14 are insulated and electrically and structurally independent. This insulator 16 is molded from molded plastic such as ABS, for example.

In particular, as shown in FIG. 6A, the insulator 16 is provided with an internal terminal conductor through hole 32 through which the above-mentioned cable conductor 30 penetrates. Since the internal terminal conductor through hole 32 is formed in the insulator 16 in this manner, the cable conductor 30 to be connected to the pin-shaped core portion 20 is
The insulator 16 can be penetrated and guided around the pin-shaped core portion 20 of the cable connector 10.

More specifically, the internal terminal conductor through hole 32 is formed around the internal connection terminal 12 as shown in FIGS. 1 (A) and 2 (A). The form is shown to consist of two fan-shaped holes formed so as to face each other with the internal connection terminal 12 interposed therebetween. However, the present invention is not limited to this, and may be any other shape or number such as a fork shape as long as the cable conductor 30 can be penetrated while being expanded toward the tip end side of the cable connector 10. Is.

On the other hand, the external connection terminal 14 is shown in FIGS.
As shown in, the cylindrical core portion 34 and the cylindrical core portion 34
Fixing part 3 for fixing the cable conductor 40 described later at the tip of the
6 is provided. Like the pin-shaped core portion 20 of the internal connection terminal 12, the cylindrical core portion 34 can also be formed from a copper-based material such as phosphor bronze or tough pitch copper, aluminum, iron, or the like. Further, in the illustrated embodiment, the fixing portion 36 is composed of a ring 38 fixedly attached to the cylindrical core portion 34, as shown in FIGS. 1 and 2.

The other cable conductor 40 of the cable 28 corresponding to the external connection terminal 14 extends through the insulator 16 and has a cylindrical core, in particular as shown in FIGS. 1A and 1B. It is attached to the inner peripheral surface 34 a of the portion 34. Therefore, the cable conductor 40 can be exposed on the electrical contact surface while maintaining the shape along the cylindrical core portion 34. The cable conductor 40 can also be made of a high-quality material such as oxygen-free copper, if necessary. Also,
The reason why the cable conductor 40 is attached to the inner peripheral surface 34a of the cylindrical core portion 34 is that the inner peripheral surface 34a portion comes into contact with the electrical contact surface of the male input / output terminal of the electric device (not shown).

The tip of the cable conductor 40 is
As shown in FIGS. 1A and 1B, it is fixed to the cylindrical core portion 34 by a fixing portion 36. Specifically, the cable conductor 4 attached to the inner peripheral surface 34a of the cylindrical core portion 34
As shown in FIGS. 1 (A) and 1 (B), the tip portion of 0 is folded back to the outer peripheral surface 34b side of the cylindrical core portion 34 at the tip of the cylindrical core portion 34, and surrounds the folded portion. A ring 38 fixedly attached to the cylindrical core portion 34 is sandwiched between the ring 38 and the outer peripheral surface 34 b of the cylindrical core portion 34 and crimp-connected to the cylindrical core portion 34.

In particular, as shown in FIG. 2, the ring 38 has a plurality of locking claws 42 projecting inward at the rear end thereof. As shown in FIGS. 1 (B) and 2 (B), the ring 38 corresponds to the locking claw 42 and is formed in the cylindrical core portion 34 in the circumferential direction intermittently in the claw insertion hole 4.
By engaging the locking claw 42 into the cylindrical core 4,
4, the cable conductor 40 is fitted so as to sandwich it. In this case, the tip end of the cable conductor 40 is securely crimped between the cylindrical core portion 34 and the cylindrical core portion 34 so that the cable conductor 40 does not easily come off from the cylindrical core portion 34. It is desirable to adjust the fitting condition with.

As described above, the other cable conductor 40 directly drawn from the cable 28 also extends to the tip of the cable connector 10 while being fixed, and is exposed on the electrical contact surface along the shape of the cylindrical core 34. Therefore, the cable conductor 40 is not shown in FIG.
It can be directly connected to the input / output terminal of electric equipment such as V equipment. Therefore, as a material of the connection terminal, sound generated by using a material different from that of the high-quality cable conductor 40,
The reliability of electrical connection is improved without deterioration of electrical signals such as video signals.

On the other hand, as shown in FIG. 6 (A), the insulator 16 has a plurality of circumferentially spaced notches concentrically with the circumferential surface. In the illustrated embodiment, four conductor through-grooves 46 are formed.
When the insulator 16 is fitted between the internal connection terminal 12 and the external connection terminal 14, as shown in FIG. 1, the conductor through groove 46 allows the insulator 16 and the inner peripheral surface 34 a of the cylindrical core portion 34 to be separated from each other. Between them, four external terminal conductor through holes 48 are formed. Thereby, as described above, the cable conductor 40 fixed to the cylindrical core portion 34 is connected to the external terminal conductor through hole 48.
Through the insulator 16 through the cable connector 1
It can be guided around the cylindrical core portion 34 of 0.

In this case, the cable conductor 40 to be connected to the cylindrical core 34 is exposed at the tip of the cable 28 as shown in FIGS. 1A and 1B, and then these four conductors are exposed. By being divided into four corresponding to the external terminal conductor through holes 48 and penetrating the insulator 16,
It is fixed to the cylindrical core portion 34. Of course, also in this case, the number, shape, arrangement, etc. of the conductor penetrating holes 48 for external terminals are not necessarily limited to this, and if the cable conductor 40 can be penetrated to the tip side of the cable connector 10, It can be appropriately set according to the configuration such as the number of the cable conductors 40.

The pin-shaped core portion 20 and the cylindrical core portion 34 made of a copper-based material or the like are preferably plated with nickel or gold in order to prevent deterioration of the material.
Further, as described above, the cable connector 10 of the present invention
In the above, the electrical connection between the electric device and the cable 28 is made by directly contacting the input / output terminals of the electric device with the cable conductors 30 and 40, and the pin-shaped core portion 20 and the cylindrical core portion 3
In the general (conventional) cable connector, the material of the pin-shaped core portion 20 and the cylindrical core portion 34, which correspond to the connection terminals that play the role of electrical connection, is left and right. Not done. Therefore, the cable conductor 3 is used as a material for the pin-shaped core portion 20 and the cylindrical core portion 34.
Even if the material different from 0 and 40 is used, the electric signal is not deteriorated, and it is not always necessary to use the same high quality as the cable conductors 30 and 40, so that the manufacturing cost can be suppressed at the same time. There are advantages. Therefore, also in the above-described embodiment, the pin-shaped core portion 20 and the cylindrical core portion 34 are formed of phosphor bronze different from oxygen-free copper, copper-based material such as tough pitch copper, aluminum, iron, or the like. The material is not limited to these materials, and the pin-shaped core portion 20 and the cylindrical core portion 34 may be made of any material as long as they can fix the cable conductors 30 and 40.
It may be formed of other molded plastic or the like.

In the illustrated embodiment, an engaging hole 24 formed at the tip of the pin-shaped core 20 and a portion 26 surrounding the engaging hole 24 are used as the fixing portion 22 of the internal connection terminal 12. However, the invention is not necessarily limited to this, and if the cable conductor 30 can be crimped, for example, a small-diameter ring fitted to the tip of another pin-shaped core portion 20,
In addition, an appropriate method such as a ring that is attached to the tip of the pin-shaped core portion 20 and then squeezed can be adopted. Further, the cable conductor 30 is not limited to those fixed by crimping as described above, and if the cable conductor 30 can be securely fixed, for example, the cable conductor inserted into the insertion hole 24 by soldering or other appropriate means. The tip of 30 may be fixed in the engagement hole 24. In this case, it is desirable to fill the solder in the engagement hole 24 so that the solder does not appear on the electrical contact surface and affect the electrical connection. Of course, even if solder is used, the electrical connection is made by directly connecting the cable conductor 30 itself attached to the pin-shaped core portion 20 to the input / output terminal of the electric device, so that the electric signal is not deteriorated. Absent.

On the other hand, the fixed portion 36 of the external connection terminal 14 is also
In the illustrated embodiment, the locking claw 42 allows the cylindrical core 3 to
4 is fixedly attached to the ring 38, but the ring 38 is not necessarily limited to the ring 38. For example, the rear cable conductor 40 attached to the cylindrical core portion 34 may be sandwiched and crushed. A ring or a squeezed ring may be used, or the cable conductor 40 may be attached to the outer peripheral surface 34 of the cylindrical core 34 by soldering instead of crimping.
b and the ring 38, or the outer peripheral surface 34b of the cylindrical core portion 34 is fixed to the fixing portion 36 without using the ring 38.
And may be directly fixed to the outer peripheral surface 34b.

Further, in the illustrated embodiment, the cable conductors 30 and 40 are penetrated through the insulator 16 and led out to the tip side of the cable connector 10, so that the conductor 16 for the internal terminal and the conductor through hole 32 for the internal terminal are formed in the insulator 16. Inner peripheral surface 34a of the cylindrical core 34
Conductor through-groove 4 for forming external terminal through-hole 48 between
6 is formed, the cable conductors 30 and 40 are not necessarily limited to such holes and grooves as long as the cable conductors 30 and 40 can be led out to the tip end side of the cable connector 10. The insulator 16 may be integrally formed with the insulator 40 so as to be penetrated.

In the embodiment shown in FIG. 1, the cable 28
Is a two-conductor cable having two cable conductors 30, 40. In this case, the cable connector 10 of the present invention is, as described above, the internal connection terminal 1
2 pin-shaped core portion 20 and external connection terminal 14 cylindrical core portion 3
4, corresponding cable conductors 30 and 40 are fixed respectively, and these two cable conductors 30 and 40 are electrically insulated from each other by the insulator 16. Therefore, one cable connector 10 can provide a plurality of conductors. The cables 30 and 40 can be directly connected to the input / output terminals of the electric device while being electrically isolated from each other. That is, the cable connector 10 of the present invention can
It can also be used to electrically connect a cable 28 having a plurality of cable conductors 30, 40 to electrical equipment. Therefore, as the cable 28 that can be connected to various electric devices by the cable connector 10 of the present invention, specifically, a multi-core cable such as a twined pair twisted wire, a coaxial cable, or the like can be used. .

This means that the cable connector 1 of the present invention is
In particular, 0 is set according to the number, arrangement, and shape of the pin-shaped core portions 20 of the internal connection terminals 12 in accordance with the number of cable conductors, the shape of input / output terminals of electrical equipment, and the like, so that various cables 28 and electric It means that it can be applied and applied to equipment. Therefore, the cable connector 10 of the present invention
Is not limited to the electrical connection of the cable 28 having the two cable conductors 30 and 40 shown in FIG.
It can also be used for the electrical connection of a cable 28 having more than two cable conductors, and can also be used for CD players etc.
It is also possible to directly connect the cable conductors 30 and 40 to the V device. Therefore, next, another embodiment of the present invention will be described in which the mode is changed according to the number of cable conductors and the shape of the input / output terminals of the electric device.

FIG. 3 shows a cable 28 to a microphone or the like.
1 shows a cable connector 10 capable of supporting the electrical connection of FIG. Specifically, in this embodiment,
As shown in FIG. 3A, a cable connector 10 used for electrical connection of a cable 28 having four cable conductors 30A to 30C and 40 is shown, and the cable connector 10 includes these four cables. An internal connection terminal 12 having three pin-shaped core portions 20A to 20C and an external connection terminal 14 having a cylindrical core portion 34 are provided for connecting the conductors 30A to 30C and 40 to input / output terminals of an electric device. ing. In addition, the insulator 16 includes
Corresponding to the three pin-shaped core portions 20A to 20C, three internal terminal conductor through holes 32A to 32C are formed.

Of the four cable conductors 30A to 30C and 40, the three cable conductors 30A to 30C are
As shown in FIG. 3, the insulator 16 is penetrated through the corresponding conductor through holes 32A to 32C for internal terminals.
Peripheral surface 2 of corresponding pin-shaped core portions 20A to 20C
0a, and the tip is fixed to the pin-shaped core portion 2 by the fixing portion 22 (the engaging hole 24 and the portion 26 surrounding the engaging hole 24).
It is fixed by pressure-bonding to 0A to 20C. On the other hand, the other one cable conductor 40 to be connected to the cylindrical core 34 is divided into four as shown in FIG.
The fixing portion 36 passes through the insulator 16 through the four conductor through holes 48 for external terminals formed by the conductor through grooves 46 between the insulator 16 and the inner peripheral surface 34a of the cylindrical core portion 34.
The (ring 38) is crimp-connected and fixed to the cylindrical core 34.

Therefore, as in the embodiment shown in FIG.
Each cable conductor 30 drawn directly from the cable 28
Since A to 30C and 40 are fixed by being exposed to the electrical contact surface while being insulated from each other by the insulator 16, the cable conductors 30 and 40 remain electrically independent from each other and electricity such as a microphone is generated. Can be directly connected to the device. Although the three pin-shaped core portions 20A to 20C are used in the embodiment of FIG. 3, other numbers (preferably one to five ranges) are appropriately used depending on the cable 28 to be connected. Can be set to. Also, the arrangement of the pin-shaped core portion 20 can be appropriately set according to the shape of the input / output terminal of the electric device to be connected. As described above, the cable connector 10 of the present invention can be used for electrical connection of various cables 28 and electric devices.

Next, the method of assembling the cable connector 10 according to the embodiment of the present invention shown in FIG. 1 will be described with reference to FIGS.
Will be described with reference to. First, as shown in FIG. 4, after the sheath 28A is peeled off at the end portion of the cable 28, the inner insulator 28B covering the cable conductor 30 is peeled off,
The cable conductor 30 is exposed. After unraveling the exposed cable conductor 30, the tip portion thereof is inserted into the insertion hole 2 formed at the tip of the pin-shaped core portion 20 as shown in FIG.
4 and squeeze the part 26 surrounding the engagement hole 24,
The cable conductor 30 is fixed to the pin-shaped core portion 20 by crimp connection. At this stage, the cable 28 is passed through the exterior cover 18 in advance.

After that, as shown in FIG. 5, the cable conductor 30 is folded back at the tip of the pin-shaped core portion 20 and brought into close contact with the peripheral surface 20a of the pin-shaped core portion 20. In this case, by inserting the pin-shaped core portion 20 into the cable conductor 30 such that the plurality of core wires 50 forming the cable conductor 30 are separated from each other, as shown in FIG.
The peripheral surface 20a of the pin-shaped core portion 20 can be attached so that 0 surrounds the pin-shaped core portion 20. Further, as described above, the cable conductor 30 is directly pulled out from the cable 28 and is attached to the peripheral surface 20a of the pin-shaped core portion 20, so that the cable conductor 30 shown in FIG.
At the stage shown in, the sheath 28A and the inner insulator 28B are stripped off longer than the length of the pin-shaped core portion 20, and the cable conductor 3
0 is exposed to a length such that 0 can be added to the pin-shaped core portion 20.

Then, as shown in FIGS. 6A and 6B, the tip end side of the pin-shaped core portion 20 (see the arrow in FIG. 6B).
From above, the insulator 16 is mounted so that the cable conductor 30 and the pin-shaped core portion 20 penetrate the conductor through holes 32 for internal terminals.

On the other hand, the other cable conductors 40 are similarly stripped of the inner insulator 28B and exposed to the required length. The exposed cable conductor 40 is divided into four corresponding to the four conductor through-grooves 46 of the insulator 16 and housed in the conductor through-groove 46 for each bundle. Then, as shown in FIGS. 7A and 7B, the cylindrical core portion 34 is attached along the peripheral surface of the insulator 16, and the cable conductor 40 is
The insulator 16 is penetrated through the conductor through hole 48 for the external terminal formed between the conductor through groove 46 and the inner peripheral surface 34a of the cylindrical core portion 34. The cylindrical core 34 is shown in FIG.
As shown in FIGS. 7 (B) and 8 (B), the locking claw 3
It is locked to the sheath 28A of the cable 28 by 4c.

Further, as shown in FIGS. 7A and 7B, the cable conductor 40 penetrating the insulator 16 is attached to the inner peripheral surface 34a of the cylindrical core portion 34, and the cylindrical core portion 34 is formed. After being folded back to the outer peripheral surface 34b side at the tip of the ring 38, the ring 38 is mounted from the tip side of the cable connector 10 (see the arrow in FIG. 7B), and the locking claw 42 of the ring 38 is inserted into the claw insertion hole 44. The cable conductor 40 which is engaged and folded back in this manner
The portion is crimp-connected and fixed so as to be sandwiched between the ring 38 and the outer peripheral surface 34b of the cylindrical core portion 34.

Finally, as shown in FIGS. 8 (A) and 8 (B), the outer cover 18 in which the cable 28 is preliminarily passed.
Is attached from the rear end side of the cable connector 10 (see the arrow in FIG. 8B), and is fixed to the cylindrical core portion 34 by an appropriate means such as a screw, and the assembling work is completed.

[0045]

According to the present invention, as described above, the cable conductor is penetrated through the insulator to the peripheral surface of the pin-shaped core portion of the internal connection terminal or the inner peripheral surface of the cylindrical core portion of the external connection terminal. At the same time as being attached, since the tip part is fixed to each core part, the cable conductor directly drawn from the cable is fixed while being exposed at the electrical contact surface, so the cable conductor is made of a different material Can be directly connected to the input / output terminals of electrical equipment without using any other material. Therefore, the use of a material other than a high-quality cable conductor as the material for the connection terminals may cause deterioration of electrical signals such as audio and video signals. There is a real benefit that the reliability of the electrical connection is improved.
Further, in this case, since the electrical connection is directly made by the cable conductor itself and does not depend on the pin-shaped core portion or the cylindrical core portion, the material of the core portion is not influenced by the material of these core portions. As an electric signal does not deteriorate even if a material different from the cable conductor is used, it is not always necessary to use the same high quality material as the cable conductor, and at the same time, the manufacturing cost can be suppressed.

Further, according to the present invention, as described above, the cable corresponding to the pin-shaped core portion of the internal connection terminal and the cylindrical core portion of the external connection terminal, which are electrically insulated from each other by the insulator, respectively. Since the conductors are attached and fixed, it is possible to directly connect multiple conductor cables to input / output terminals of electrical equipment while keeping them electrically independent of each other with one cable connector, thus degrading electrical signals. There is a practical advantage of being able to be used for electrical connection of a cable having a plurality of cable conductors such as a coaxial cable and a multi-core cable without causing the above. In particular, by setting the number, arrangement, and shape of the pin-shaped cores of the internal connection terminals according to the number of cable conductors and the shape of input / output terminals of electrical equipment, various cables and electrical equipment can be supported. For example, there is a practical advantage that a cable conductor can be directly connected to an AV device such as a CD player.

[Brief description of drawings]

FIG. 1A is a schematic front view of a cable connector of the present invention in use, and FIG. 1B is a schematic sectional view thereof.

FIG. 2 (A) is a schematic front view of a cable connector of the present invention before connection of cable conductors, and FIG. 2 (B) is a schematic sectional view thereof.

FIG. 3 (A) is a schematic front view of another embodiment of the cable connector of the present invention in use, and FIG. 3 (B).
Is a schematic sectional view thereof.

FIG. 4 is a process of assembling the cable connector of the present invention,
It is a side view which shows the process of fixing a cable conductor to the front-end | tip of a pin-shaped core part.

FIG. 5: Among the assembling steps of the cable connector of the present invention,
It is a side view which shows the process of folding back a cable conductor by the front-end | tip of a pin-shaped core part.

FIG. 6 (A) is a front view showing a step of attaching an insulator to a pin-shaped core portion and penetrating a cable conductor through the insulator in the assembling step of the cable connector of the present invention. B)
Is a partial side view thereof.

FIG. 7 (A) is a view showing a process of assembling a cable connector according to the present invention, in which another cable conductor is passed through an insulator and is attached to an inner peripheral surface of the cylindrical core portion to form a cylindrical core portion. The front view which shows the process of fixing, and the figure (B) are the partial side views.

FIG. 8 (A) is a front view showing a step of attaching an outer cover in the assembling step of the cable connector of the present invention,
FIG. 1B is a partial side view thereof.

FIG. 9 is a cross-sectional view of a prior art cable connector and its components.

FIG. 10 is a perspective view of another conventional connection terminal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cable connector 12 Internal connection terminal 14 External connection terminal 16 Insulator 18 Exterior cover 20 Pin-shaped core portion 20a Peripheral surface of pin-shaped core portion 22 Fixing portion 24 Engagement hole 26 Portion surrounding the engagement hole 28 Cable 28A Sheath 28B Internal Insulator 30 Cable conductor 32 Conductor through hole for internal terminal 34 Cylindrical core part 34a Inner peripheral surface of cylindrical core part 34b Outer peripheral surface of cylindrical core part 34c Cylindrical core locking claw 36 Fixed part 38 Ring 40 Cable Conductor 42 Ring locking claw 44 Claw engaging hole 46 Conductor through groove 48 Conductor through hole for external terminal 50 Core wire

Claims (3)

[Claims] 1. At least one cable conductor is connected
One or more pin-shaped internal connection terminals, a cylindrical external connection terminal that is arranged so as to surround the pin-shaped internal connection terminals and is connected to another cable conductor, the internal connection terminals and the external connection terminals And a pin-shaped core portion having a corresponding cable conductor extending along the peripheral surface along the peripheral surface, and the pin-shaped connector. And a fixing portion for fixing the cable conductor at a tip portion of the core portion, wherein the external connection terminal has a cylindrical core portion having a corresponding cable conductor extending through the insulator and attached to an inner peripheral surface thereof. A cable connector comprising: a fixing portion for fixing the cable conductor at a tip portion of the cylindrical core portion. 2. The fixing portion of the internal connection terminal includes an insertion hole formed at the tip of the pin-shaped core portion into which the folded back end of the cable conductor is inserted, and a portion surrounding the insertion hole. The cable connector according to claim 1, wherein the tip end portion of the cable conductor is crimped to the pin-shaped core portion by squeezing a portion surrounding the engagement hole. 3. The fixing portion of the external connection terminal is fixed to the cylindrical core portion so as to surround the cable conductor portion folded back to the outer peripheral surface side of the cylindrical core portion at the tip of the cylindrical core portion. And a tip portion of the cable conductor is sandwiched between the ring and an outer peripheral surface of the cylindrical core portion and crimp-connected to the cylindrical core portion. The cable connector according to claim 1 or 2.