JP2001102139A - Cable connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small cable connector with reliable shield effect and signal transmission. SOLUTION: A cable connector 1 comprises a plug 2 with an auxiliary metal member 11 for electrically connecting with all external conductors 31a, 32a of the cables 31, 32, and a receptacle 21 for detachably receiving the plug. The receptacle 21 includes connectors 23, 26 connected to both the auxiliary metal member 11 and the earth terminal for the external conductors. Attaching the plug 2 to the receptacle 21, the external conductors 31a, 32a are all electrically connected through the auxiliary metal member 11 and connectors 23, 26 to the earth terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector used for information equipment such as a notebook type computer and a small electronic equipment such as a home electric appliance, and more particularly, to electrically connect to external conductors of a large number of cables. The present invention relates to a cable connector.

[0002]

2. Description of the Related Art Many cables are used for internal wiring of information devices such as notebook personal computers and small electronic devices such as home appliances. This multi-cable is composed of a large number of single cables each having an extra-fine conductor arranged at the center of the insulator, and a flexible cable in which a plurality of extra-fine conductors are arranged in a row in the insulator. There are known flat cables and those obtained by assembling a large number of extra-fine coaxial cables, and a cable connector is used as a device for electrically connecting these many cables to each terminal of a printed wiring board. On the other hand, in the case where a large number of cables each having an inner conductor and an outer conductor are assembled like a coaxial cable, each inner conductor of each cable is usually connected to a corresponding terminal of a printed wiring board by a cable connector. In addition to being electrically connected, each external conductor of each cable is collectively connected to the ground terminal of the printed wiring board.

For example, a conventional cable connector is:
A plug having a metal supporting member for arranging a plurality of cables in a row and electrically connecting the respective outer conductors of the cables collectively to each other, and a cover covering the plug, A conductive metal shield cover and a plug covered by the shield cover are detachable,
And a receptacle provided with a plurality of internal conductor contacts therein, and another receptacle cover is provided in the receptacle, the shield cover being electrically connected to the ground terminal of the printed wiring board. Each internal conductor contact of the receptacle is electrically connected to each terminal of the printed wiring board.

In such a conventional cable connector, when a plug is mounted on a receptacle, each internal conductor is electrically connected to a corresponding internal conductor contact, whereby each internal conductor is connected to each terminal of a printed wiring board. Electrical connection is established. Also, when the plug is mounted on the receptacle, the shield cover covering the plug contacts the shield cover on the receptacle side, whereby each external conductor is
The ground terminal is collectively connected to the ground terminal via a metal support member, a shield cover on the plug side, and a shield cover on the receptacle side.

In this conventional cable connector, as described above, when a large number of external conductors of a cable are connected to the ground, they are connected to the ground via a shield cover. The capacity is as large as possible, and the shielding effect is made as high as possible.

[0006]

In the conventional cable connector, the shield capacity is as large as possible by using only the shield cover. However, in order to secure sufficient shield capacity, the shield cover must be formed large,
If the shield cover is made large in this way, there has been a problem that it is not possible to meet the recent demand for miniaturization of the cable connector.

On the other hand, if the size of the shield cover is reduced in response to the demand for miniaturization of the cable connector, it is difficult to secure a sufficient shield capacity to cope with a noise problem caused by an increase in the frequency of an electronic device. However, there has been a problem that the transmission of signals cannot be performed reliably.

The above-mentioned problems are important because it is expected that higher frequencies in electronic devices and further miniaturization of electronic devices will be achieved in the future.

An object of the present invention is to provide a small-sized cable connector which has a sufficiently high shielding effect and ensures signal transmission in view of the above circumstances.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a plurality of cables are arranged in a row, and a plurality of cables are electrically connected collectively to respective external conductors of the cables. And a receptacle having a plurality of internal conductor contacts that are detachable and electrically connected to each internal conductor of each cable when the plug is mounted. In the connector, the receptacle is connected to the metal auxiliary member, and has an external conductor contact connected to a ground terminal. When the plug is mounted on the receptacle, each of the external conductors is made of the metal Are electrically connected to the ground terminal collectively via the auxiliary member and the external conductor contact.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cable connector according to the present invention will be described in detail. FIG. 1 is a conceptual perspective view showing a configuration of a cable connector according to the present invention, showing a state before a cable is electrically connected. As shown in FIG. 1, the cable connector 1 includes a plug 2 on which a plurality of coaxial cables 31 and 32 are arranged, and a receptacle 21 to which the plug 2 is detachable. The plug 2 includes a main body 7 made of an insulator having a concave portion 8 formed on the upper surface, and a metal auxiliary member 11 positioned and accommodated in the concave portion 8. The main body 7 is adjacent to the recess 8 and the receptacle 2
A plurality of substantially U-shaped guide grooves 3 to 6 formed at a predetermined pitch toward 1 are provided. On the other hand, as shown in FIG. 2 showing a state before the metal auxiliary member 11 is attached to the main body 7, each of the outer conductors 31 of the plurality of coaxial cables 31 and 32 is provided.
a, 32a, and a metal upper plate 18 attached to the upper surface of the support member 17
And a metal lower plate 19 adhered to the lower surface of the support member 12, wherein the support member 17 has a coaxial cable at a position corresponding to the substantially U-shaped grooves 4 and 5 in FIG. The outer conductors 31a and 32a of the first and second support members 31 and 32 are supported. The lower plate 19 of FIG. 2 has a pair of tongues 13 and 1 at positions corresponding to the substantially U-shaped guide grooves 3 and 6 of FIG.
6 are formed. FIG. 2 is a conceptual perspective view of a main part showing a metal auxiliary member 11 constituting the plug 2 and coaxial cables 31 and 32 supported by the auxiliary member 11,
1 are denoted by the same reference numerals.

As shown in FIG. 1, the pair of tongues 13 and 16 of the metal auxiliary member 11 shown in FIG. 2 are moved along the respective U-shaped grooves 3 and 6 of the corresponding main body 7 in the respective directions of formation. The inner conductors 31b and 32b of the plurality of coaxial cables 31 and 32 are formed into corresponding U-shaped grooves 4 and 5 of the corresponding main body 7. When it is bent along the direction and wound around the substantially U-shaped grooves 4 and 5, the tongue 13 of the metal auxiliary member 11, the inner conductor 31b of the coaxial cable 31, the inner conductor 32b of the coaxial cable 32, the metal auxiliary The tongue pieces 16 of the member 11 are bent and arranged in a row and a substantially U-shape along the corresponding guide grooves 3, 4, 5, and 6, whereby the plug 2 of FIG. 1 is assembled. Become.

The plug 2 assembled as described above
Then, each tongue piece 13, 16 and each internal conductor 31b, 32
b is exposed on the surface of the plug 2, and the exposed tongue pieces 13, 16 and the internal conductors 31 b, 32 b themselves become the male contacts constituting the connector 1.

On the other hand, the receptacle 21 shown by a dotted line in FIG.
The male contacts of the plug 2, ie, the inner conductors 31b and 32b of the plurality of coaxial cables 31 and 32 and the tongue piece 13 of the auxiliary member 11,
At positions opposing to 16, internal conductor contacts 24 and 25 and external conductor contacts 23 and 26 are arranged at a predetermined pitch, respectively.

The internal conductor contacts 24 and 25 and the external conductor contacts 23 and 26 have the same shape. The structure of the contacts will be described as a representative of the external conductor contacts 23. The contact 23 includes a tuning fork-shaped tip 23a arranged toward the plug 2 and a leg 23b connected to a corresponding terminal of a printed wiring board (not shown). Also,
Of these external conductor contacts 23 to 26, in particular,
Each of the external conductor contacts 23, 26 has its leg 23b,
26b is connected to a ground terminal (not shown) of the printed wiring board. On the other hand, in the plug 2 and the receptacle 21 configured as described above, when the plug 2 is attached to the receptacle 21 as shown by an arrow A in FIG. 1, as shown in FIG. In addition, the guide groove 3 is inserted into the tuning fork-shaped tip 23a of the external conductor contact 23, and at the same time, the tuning fork-shaped tip 23a is disposed in the guide groove 3 and is wound around the guide groove 3. 13 is grasped from its upper and lower surfaces. On the other hand, the external conductor contact 23 is
Is connected to a ground terminal of a printed wiring board (not shown).
Therefore, the external conductors 31a and 32a of FIG. 2 which are collectively electrically connected to the metal auxiliary member 11 are collectively electrically connected via the metal auxiliary member 11 and the external conductor contact 23. (Ground connection). In FIG. 3, the same parts as those in FIG. 1 are indicated by the same reference numerals. Reference numeral 27 in FIG.
Reference numeral 28 denotes a lower surface in the receptacle 21.

As described above, in the cable connector 1, since the ground connection can be made without disposing the shield cover as in the related art, the structure of the cable connector is simplified because the shield cover is not disposed. The cost can be reduced, and the size of the cable connector 1 can be reduced.

As described above, in the cable connector 1, the external conductors 31a and 32a are grounded via the metal auxiliary member 11 and the external conductor contact 23. The cable connector 1 is secured by a shield cover to secure a sufficient shielding capacity in response to the noise problem caused by the recent increase in the frequency of electronic devices. In the case where the shield cover is used, it is not necessary to form the shield cover large as in the related art.

Further, in this cable connector 1, the shield capacity is secured by the metal auxiliary member 11 and the external conductor contact 23 as described above. Therefore, even if the shield cover is formed small, the influence of the shield cover on the entire shield capacitance can be reduced as much as possible. Corresponding sufficient shielding capacity can be ensured, the shielding effect can be maintained as high as possible, and signal transmission can be performed reliably.

Therefore, according to the cable connector 1, the shield effect can be maintained as high as possible, the signal transmission can be reliably performed, and the cable connector can be downsized.

On the other hand, in this cable connector 1, when the plug 2 is mounted on the receptacle 21, the pair of tongues 1
Similarly to the above-mentioned one tongue 13, the tuning fork-shaped tip 26 a of the external conductor contact 26 grips the other tongue 13 from the upper and lower surfaces of the other tongue 13. , Contact 26 for external conductor
The outer conductor 31a and the outer conductor 32a are collectively and electrically connected (ground connection) via the metal auxiliary member 11 and the outer conductor contact 26 because they are connected to the ground terminal of the printed wiring board by the legs 26b. .

For this reason, in the cable connector 1, the ground connection between the outer conductor 31a of the coaxial cable 31 and the outer conductor 32a of the coaxial cable 32 is established by the tongue piece 13 provided on the metal auxiliary member 11 and the outer conductor. Contact 23, tongue piece 16 and external conductor contact 2
6, thereby reducing the shielding capacity of the metal auxiliary member 11 and the shielding capacity of the external conductor contact as compared with the case where one tongue piece and one external conductor contact are provided, respectively. However, since the size of the cable connector can be increased by the number of arrangements, the size of the cable connector can be kept small, and the shield capacity of the entire cable connector can be further secured as compared with the related art. Therefore, a sufficient shielding capacity can be further secured in response to the noise problem caused by the increase in frequency in recent electronic devices, and the signal transmission can be reliably performed while maintaining the shielding effect as high as possible. It is possible to meet the recent demand for miniaturization of cable connectors.

When the plug 2 is mounted on the receptacle 21, the guide grooves 4, 5 shown in FIG.
5a, the tuning fork-shaped tips 24a, 25a simultaneously hold the inner conductors 31b, 32b disposed in the guide grooves 4, 5 from the upper and lower surfaces, respectively. And the corresponding internal conductor contacts 24 and 25 are electrically connected. On the other hand, each of the internal conductor contacts 24, 25 is
a and 25a are connected to the corresponding terminals of the printed wiring board, so that the respective internal conductors 31b and 32b and the corresponding terminals of the printed wiring board are connected via the respective internal conductor contacts 24 and 25, It will be electrically connected.

In the cable connector 1, since the tongue pieces 13, 16 of the metal auxiliary member 11 are wound around the main body 7 of the plug 1, the metal auxiliary member 11
Is securely positioned and fixed to the main body 7 and does not fall off from the main body 7.

In the cable connector 1, since the tongue pieces 13, 16 of the metal auxiliary member 11 are sandwiched between the external conductor contacts 23, 26 to be grounded, the external conductors 31a, 32a
And the ground terminal of the printed wiring board can be reliably connected.

The cable connector 1 of this embodiment
In the above, each of the outer conductor contacts 23 and 26 has the same shape as each of the inner conductor contacts 24 and 25. However, in the cable connector of the present invention, the shape of the outer conductor contact is not limited to this. The conductor contact may be a contact having a shape different from that of the internal conductor contact. Further, as in the cable connector 1 of this embodiment, when each of the external conductor contacts 23 and 26 and each of the internal conductor contacts 24 and 25 have the same shape, the external conductor contacts 23 and 26 are Compared to a cable connector having contacts different in shape from the conductor contacts 24 and 25, the structure of the cable connector is simpler, the manufacturing operation is further facilitated, and the manufacturing cost can be further reduced. .

In addition, the cable connector 1 of this embodiment
In the above, the cable for electrical connection is a coaxial cable, but the cable used in the cable connector of the present invention is not limited to a coaxial cable, and may be any cable provided with an inner conductor and an outer conductor. For example, a so-called two-core parallel shielded wire composed of one outer conductor and two inner conductors may be used. Further, in the cable connector 1 of this embodiment, the shield cover for covering the entire cable connector 1 is not provided. However, the cable connector of the present invention is not limited to this, and the shield cover may be provided. In such a case, a larger shielding capacity can be ensured, and the shielding effect can be further enhanced.

[0027]

As described above, in the cable connector according to the present invention, a plurality of cables are arranged in a row, and a metal auxiliary member is connected to the external conductors of each cable collectively. An external conductor contact electrically connected to the member and electrically connected to the ground terminal is provided on the receptacle, so that when the plug is mounted on the receptacle, each external conductor is made of a metal auxiliary. Since the ground terminal is collectively connected to the ground terminal via the member and the contact for the external conductor, the shield capacitance is secured by the metal auxiliary member and the contact for the external conductor. It is not necessary to make the shield cover large as before in order to respond to noise problems and secure sufficient shielding capacity. There.

Further, even if the shield cover is formed small due to the recent demand for miniaturization of the cable connector, the influence of the shield cover on the entire shield capacity can be reduced as much as possible. Sufficient shielding capacity corresponding to the noise problem caused by the increase in frequency of the electronic device can be ensured, so that the shielding effect can be maintained as high as possible and the signal transmission can be performed reliably.

Therefore, according to the cable connector of the present invention, the shield effect can be sufficiently increased to reliably transmit the signal, and the size can be reduced, thereby performing a stable operation. A small electronic device such as a small personal computer can be provided.

[Brief description of the drawings]

FIG. 1 is a conceptual perspective view showing a configuration of a cable connector according to the present invention, showing a state before a cable is electrically connected.

FIG. 2 is a conceptual perspective view showing a main part of a metal auxiliary member constituting a plug of a cable connector according to the present invention and a coaxial cable supported by the auxiliary member. The figure which shows a mode before attaching to the main body of a plug.

FIG. 3 is a conceptual cross-sectional view of the cable connector according to the present invention, showing a state where an external conductor of the cable is grounded via a metal auxiliary member and an external conductor contact.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cable connector 2 ... Plug 11 ... Metal auxiliary member 21 ... Receptacle 23, 26 ... External conductor contact 24, 25 ... Internal conductor contact 31, 32 ... Plurality of cables 31a, 32a ... External conductor 31b. 32b ... internal conductor

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[Procedure amendment]

[Submission date] October 7, 1999 (1999.10.
7)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

Claims (2)

[Claims] 1. A plug having a metal auxiliary member for arranging a plurality of cables in a row and electrically connecting the respective cables to respective outer conductors collectively, said plug being detachable, A cable connector comprising a plurality of internal conductor contacts electrically connected to the respective internal conductors of the respective cables when the plug is mounted, wherein the receptacle is connected to the metal auxiliary member. ,
And an external conductor contact connected to a ground terminal. When the plug is mounted on the receptacle, the external conductors are collectively connected to the ground via the metal auxiliary member and the external conductor contact. A cable connector characterized by being electrically connected to a terminal. 2. The metal auxiliary member has a tongue piece wound around the main body of the plug at a position corresponding to the external conductor contact, wherein the external conductor contact is an internal conductor contact. A cable connector formed in the same shape as that of the cable connector and sandwiching the tongue piece.