JP2885674B2 - Cable connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable connector in which a plurality of signal lines connected to contact terminals are surrounded by a cable coating.

[0002]

2. Description of the Related Art A cable connector for electrically connecting various sensors such as a proximity switch, a pressure switch, and the like, whose operation mode switches ON / OFF of a signal, is ON-ON.
The shield structure is not incorporated because there is no need for a shield measure for transmitting the OFF signal.

[0003]

However, the transmission of signals to solenoid valves, motors, and other actuators or sensors that require the transmission of analog signals is greatly affected by noise due to external factors. The connector requires a shield structure for noise reduction. For this reason, a shielding effect is conventionally obtained by wrapping a shielding material on a cable. However, such a countermeasure against the gap eliminates the advantage of easy attachment and detachment of a cable connector.

[0004] As described above, when the shield material is wound around the cable, the shield material is caught by other parts during use and a part of the cable is exposed to the outside. There was also a problem that the shielding effect was reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable connector suitably incorporating a shield structure suitable for easy attachment and detachment of the cable connector.

[0006]

According to a first aspect of the present invention, there is provided a cable connector in which a plurality of signal lines each having at least one end connected to a contact terminal are surrounded by a cable covering. A sheet shield is interposed between this signal wire and the cable jacket, and a plurality of signal wires are surrounded and shielded by the sheet shield inside the cable jacket, and both ends of the sheet shield are separated from the cable jacket. At least one end of the exposed planar shield body is made to be an expanded portion which is expanded from the inner diameter of the cable coating, and the end of the cable coating including the expanded portion and the end of the signal line is joined to the union. The gist of the present invention is a cable connector in which a contact terminal is exposed to the outside through a coupling body by mold fixing.

According to the second aspect of the present invention, one end of the planar shield body is formed as an expanded portion which is wider than the inner diameter of the cable coating, and the cable coating includes one end of the expanded portion and one end of the signal line. While one end is molded and fixed by the combined body,
The gist of the cable connector according to claim 1, wherein the other end of the planar shield body is drawn out to form a connection portion.

[0008] In the invention according to claim 3, both ends of the planar shield body are formed as expanded portions which are expanded from the inner diameter of the cable coating, and both ends of the cable coating including the expanded portions and the ends of the signal lines are included. The cable connector according to claim 1, wherein each of the cable connectors is molded and fixed by a coupling body.

[0009]

According to the above means, the external electromagnetic wave noise is absorbed and cut by the planar shield, so that the signal current flowing through the signal line is not affected by noise due to external factors. Therefore, transmission of analog signals that are susceptible to noise due to external factors will not be hindered, and shield measures such as winding a shield material around the cable as necessary are not required, and the advantage of easy handling of the cable connector is also obtained. It will not be inhibited.

[0010] The end of the planar shield exposed from the end of the cable coating is an expanded portion that is wider than the inside of the cable coating, and the expanded portion is joined to the joint by resin molding of the joint. It is fixed. Therefore, since the planar shield body is prevented from falling off from the cable coating, good noise generation can always be prevented.

[0011]

FIG. 1 shows an embodiment of the present invention.
A description will be given based on (a), (b), and (c).

Reference numeral 1 denotes a signal line, and a connection terminal 2 is crimped to one exposed end of each signal line 1 (four in this embodiment) protruding from the insulating coating 1b of the core wire 1a. A female contact terminal 3 is crimped to the other exposed end of the core wire 1a. Each female contact terminal 3 is buried in parallel in a holding body 4 made of insulating resin, and an insertion hole 4 a is provided in the holding body 4 on an extension of the tip side of each female contact terminal 3. A connecting tube 5 is loosely fitted to the holding body 4 so as to be rotatable and unable to come off. A female screw portion 5 a is provided on the inner periphery of the connecting tube 5. Holder 4 and connecting tube 5
Constitutes a socket portion, and a male thread portion of a plug portion having a male contact terminal (not shown) is
The male contact terminal and the female contact terminal 3 are electrically connected by this screw connection.

As shown in FIG. 1B, a plurality of signal lines 1
Are converged and surrounded by a planar shield body 6 made of a conductor, and the planar shield body 6 is covered with a cable covering 7 except for both ends.
It is molded by. One end of the planar shield 6 exposed from one end of the cable coating 7 is an expanded portion 16 that is expanded from the inner diameter of the cable coating 7. And
A coupling body 8 made of an insulating resin is molded and fixed from one end of the cable coating 7 to the base end of the holder 4, and the expanded portion 16 is fixed to the coupling body 8 by this molding, and the planar shield body is formed. 6 is prevented from falling off.
The position of the connecting cylinder 5 is regulated between the holding body 4 and the combined body 8.

The other end 6a of the planar shield 6 slightly exposed from one end of the cable jacket 7 in the joint body 8 is drawn linearly from the other end of the cable jacket 7 so as to be connectable.
The connection portion 6a forms a connection portion that can be appropriately connected to ground.

As described above, the sheet-like shield body 6 that converges and surrounds the signal line 1 in the cable coating 7 prevents generation of noise due to external factors. Therefore, the signal in the signal line 1 is not disturbed, and good signal transmission is performed in transmitting analog signals.

In the cable section, the signal line 1 and the planar shield 6 are completely air-tight by the cable coating 7 so that the waterproof effect is high, and the signal line 1 and the cable connector are easily attached and detached. Alternatively, corrosion of the planar shield body 6 can be reliably avoided.

Further, the sheet-like shield 6 is provided with a cable coating 7.
Therefore, the electrical performance related to the shield body 6 is remarkably stabilized as compared with the conventional shield system in which a shield material is wound around the outer periphery of the cable coating 7.

Further, one end of the planar shield body 6 exposed from one end of the cable coating 7 is an expanded portion 16 which is expanded from the inside of the cable coating 7, and a coupling body 8 made of insulating resin is provided.
The expanded portion 16 is fixed to the combined body 8 by the fixing of the mold. Therefore, the planar shield body 6 is prevented from falling off from the cable coating 7, so that good noise generation can always be prevented.

The present invention is, of course, not limited to the above-described embodiment, but may be, for example, the embodiments shown in FIGS. 2, 3 and 4. In the embodiment shown in FIGS. 2A, 2B, and 2C, as in the previous embodiment, there is a socket portion formed of the holding body 4 and the connecting tube 5 at one end of the cable portion, and at the other end of the cable portion. Is a holding body 10 for holding the male contact terminal 9 and a connecting cylinder 11 loosely and non-removably fitted to the holding body 10.
Is provided. A male screw portion 11a is provided on the outer periphery of the connection tube 11, and the connection tube 11 can be screw-connected to the female screw portion 5a of the connection tube 5 of the socket portion. A coupling body 12 made of insulating resin is molded and fixed from the base end of the holding cylinder 19 to the end of the cable coating 7, and the connecting cylinder 11 is positioned between the coupling body 12 and the flange of the holding body 10. Is done.

One end 6b of the planar shield 6 for converging and surrounding the signal line 1 in the cable coating 7 has a core wire 1a ₁ exposed from one end of the insulating coating 1b of the signal line 1A as a ground line.
It is connected to the other end portion 6c of the planar shield 6 is connected to the core wire 1a ₁ which is exposed from the other end of the insulating coating 1b of the signal line 1. In this embodiment, the waterproof effect and the stability of the electrical performance of the planar shield body 6 are further superior to those of the above embodiment.

In the embodiment shown in FIGS. 2A, 2B and 2C, both ends of the planar shield 6 exposed from both ends of the cable coating 7 are expanded from the inside of the cable coating 7. An opening 16 is formed, and the expanded portion 16 is fixed to the coupling bodies 8 and 12 by fixing the coupling bodies 8 and 12 made of insulating resin. As described above, in the embodiment of FIG. 2, both ends of the sheet-like shield body 6 are firmly fixed, and the sheet-like shield body 6 is more securely prevented from falling off from the cable coating 7 than in the above-described embodiment. Good noise generation can be prevented.

3 (a), 3 (b) and 3 (c), the female contact terminal 1 dedicated to shielding is added to the embodiment of FIG.
3, a male contact terminal 14 and a ground wire 15 are added, and connection portions 6 at both ends of the planar shield body 6 are provided.
b and 6c are connected to the core wire 15a of the ground wire 15.

In the embodiment shown in FIG. 4, a male contact terminal dedicated to shield the plug portion is composed of a female base terminal 9A embedded in the holder 10 and a male tip terminal 9B projecting from the holder 10, The mold tip terminal 9B is detachable from the female base terminal 9A. Therefore, when the male base terminal 9B is removed from the female base terminal 9A, it can be connected to another socket of a four-terminal type without a shield structure, and the shield structure can be properly used according to necessity.

[0024]

As described in detail above, according to the present invention,
Since a plurality of signal wires are surrounded and shielded by interposing a planar shield between the multiple signal wires and the cable coating, noise generation due to external factors is prevented by the planar shield, and the cable connector is easily attached and detached. Good transmission of analog signals while maintaining the performance.

The end of the planar shield exposed from the end of the cable coating is an expanded portion that is expanded from the inside of the cable coating, and the expanded portion is joined to the joint by resin molding of the joint. Since it is fixed, it is possible to prevent the planar shield body from falling off from the cable coating, and it is possible to always prevent good noise generation.

[Brief description of the drawings]

1A is a side sectional view showing an embodiment of the present invention, FIG. 1B is an enlarged sectional view taken along line AA of FIG. 1A, and FIG.
4A is an enlarged sectional view taken along line BB of FIG.

FIG. 2 (a) is a side sectional view showing another example, and FIG. 2 (b) is (a)
(C) is an enlarged sectional view taken along line DD of (a).

FIG. 3A is a side sectional view showing another example, and FIG.
(C) is an FF line enlarged cross-sectional view of (a).

FIG. 4 is a side sectional view showing another example.

[Explanation of symbols]

A signal line 1, a contact terminal 3, a holding body 4 and a connecting cylinder 5, which constitute a socket portion, a planar shield body 6, a connecting portion 6a,
Coupling parts 8 and 12, expanding part 16.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takeshi Horie 3005, Hayasaki, Kita-gaiyama, Komaki-shi, Aichi CKK Co., Ltd.

Claims (3)

(57) [Claims] At least one end has a contact terminal (3).
In a cable connector in which a plurality of signal lines (1) connected to a plurality of signal lines (1) are surrounded by a cable covering (7), a planar shield (6) is interposed between the plurality of signal lines (1) and the cable covering (7). ), A plurality of signal lines (1) are surrounded and shielded by the sheet shield (6) in the cable jacket (7), and both ends of the sheet shield (6) are covered with the cable (7). At least one end of the exposed planar shield (6) is formed as an expanded portion (16) which is expanded from the inner diameter of the cable coating (7), and the expanded portion (16) and the signal line ( Cable covering including the end of 1) (7)
A cable connector in which the end of the cable connector is molded and fixed by a combination (8, 12), and the contact terminal (3) is exposed to the outside through the combination (8, 12). 2. One end of the planar shield (6) is formed as an expanded portion (16) which is expanded from the inner diameter of the cable coating (7).
One end of the cable covering (7) including one end of the widened portion (16) and one end of the signal line (1) is molded and fixed by the coupling body (8), while the other end of the planar shield body (6). 2. The cable connector according to claim 1, wherein the cable connector is drawn out to form a connection portion (6 a). 3. An expanded portion (16) in which both ends of the planar shield (6) are expanded from the inner diameter of the cable coating (7),
The cable connector according to claim 1, wherein both ends of the cable covering (7), including the expanded portion (16) and the end of the signal line (1), are respectively molded and fixed by coupling bodies (8, 12).