JP4305887B2 - Cable connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector used in information devices such as notebook computers and small electronic devices such as home appliances, and more particularly to a cable connector that is electrically connected to each external conductor of a large number of cables.
[0002]
[Prior art]
A large number of cables are used for internal wiring of information devices such as notebook computers and small electronic devices such as home appliances.
The multiple cables include a collection of a large number of single cables in which the fine conductors are arranged at the center of the insulator, and a flexible cable in which a plurality of fine conductors are arranged inside the insulator. There are known flat cables, a collection of a large number of ultra-fine coaxial cables, and the like, and there is a cable connector as a device for electrical connection between the numerous cables and each terminal of the printed wiring board.
On the other hand, in the case of a collection of a large number of cables having an inner conductor and an outer conductor, such as a coaxial cable, each inner conductor of each cable is usually connected to each corresponding terminal of the 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.
[0003]
For example, in a conventional cable connector, a plurality of cables are arranged in a row, and a plug including a metal support member that is electrically connected to each external conductor of each cable at once, and the plug The cover comprises a metal shield cover that is electrically connected to the support member, and a receptacle in which a plug covered by the shield cover is detachable and includes a plurality of internal conductor contacts. Of these, the receptacle is provided with another shield cover that is electrically connected to the ground terminal of the printed wiring board. Further, each inner conductor contact of the receptacle is electrically connected to each terminal of the printed wiring board.
[0004]
In such a conventional cable connector, when the plug is attached to the receptacle, each inner conductor and the corresponding inner conductor contact are electrically connected, whereby the electrical connection between each inner conductor and each terminal of the printed wiring board is achieved. Connection is made.
When the plug is attached to the receptacle, the shield cover that covers the plug comes into contact with the shield cover on the receptacle side, whereby each external conductor has a metal support member, a shield cover on the plug side, and a shield cover on the receptacle side. And grounded together to the ground terminal.
[0005]
In addition, as described above, in this conventional cable connector, when the external conductors of a large number of cables are connected to the ground, they are connected to the ground via the shield cover. The shield effect is made as high as possible by securing it as large as possible.
[0006]
[Problems to be solved by the invention]
By the way, in the conventional cable connector, the shield capacity is ensured as large as possible by using only the shield cover. Therefore, sufficient shield capacity can be secured in response to the noise problem caused by the higher frequency in recent electronic devices. For this purpose, the shield cover must be formed large, and if the shield cover is formed in such a large size, there has been a problem that it has not been possible to meet the recent demand for miniaturization of cable connectors.
[0007]
On the other hand, if the shield cover is made small in response to the demand for miniaturization of the cable connector, it is difficult to secure sufficient shield capacity to cope with noise problems caused by high frequency in electronic equipment, and the shield effect is sufficient. In other words, there is a problem that transmission of signals cannot be performed reliably.
[0008]
Note that the above-described problems are important because it is expected that higher frequency in electronic devices and further downsizing of electronic devices will be achieved in the future.
[0009]
In view of the above-described circumstances, an object of the present invention is to provide a small cable connector having a sufficiently high shielding effect and reliable signal transmission.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present invention, a plurality of cables are arranged in a row, and a plug including a metal auxiliary member that is electrically connected to each external conductor of each cable at once, the plug is removable, consists of a receptacle comprising a plurality of contacts for inner conductor electrically connected to the respective inner conductors of the cable when fitted with the plug, the receptacle, the metal auxiliary members And when the plug is attached to the receptacle, the external conductors are collectively connected via the metal auxiliary member and the external conductor contacts. wherein a cable connector for electrically connecting to the ground terminal and the metal auxiliary member is in a position corresponding to the contact for the outer conductor, before Has a tongue which is wound around the plug body, the outer conductor contact is formed on the inner conductor contact the same shape, and are adapted to sandwich the tongue.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the cable connector according to the present invention will be described in detail.
FIG. 1 is a conceptual perspective view showing the configuration of a cable connector according to the present invention, and shows a state before the cables are electrically connected.
As shown in FIG. 1, the cable connector 1 includes a plug 2 in which a plurality of coaxial cables 31 and 32 are arranged, and a receptacle 21 to which the plug 2 is detachable.
Among these, the plug 2 includes a main body 7 made of an insulator having a recess 8 formed on the upper surface, and a metal auxiliary member 11 positioned and accommodated in the recess 8.
The main body 7 is provided with a plurality of substantially U-shaped guide grooves 3 to 6 which are adjacent to the recess 8 and formed at a predetermined pitch toward the receptacle 21.
On the other hand, the metallic auxiliary member 11 is a metallic supporting member 17 that supports the outer conductors 31a and 32a of the plurality of coaxial cables 31 and 32 as shown in FIG. And a metal upper plate 18 attached to the upper surface of the support member 17 and a metal lower plate 19 attached to the lower surface of the support member 12, of which the support member 17 is The outer conductors 31a and 32a of the coaxial cables 31 and 32 are supported at positions corresponding to the substantially U-shaped grooves 4 and 5 in FIG. 2 is formed with a pair of tongue pieces 13 and 16 at positions corresponding to the substantially U-shaped guide grooves 3 and 6 in FIG.
2 is a conceptual perspective view of a main part showing the metallic auxiliary member 11 constituting the plug 2 and the coaxial cables 31 and 32 supported by the auxiliary member 11. The same parts as those in FIG. ing.
[0012]
As shown in FIG. 1, the pair of tongue pieces 13 and 16 of the metallic auxiliary member 11 shown in FIG. 2 are bent along the respective forming directions of the substantially U-shaped grooves 3 and 6 of the main body 7. It winds around the substantially U-shaped grooves 3 and 6, and the inner conductors 31 b and 32 b of the plurality of coaxial cables 31 and 32 are arranged along the respective forming directions of the corresponding substantially U-shaped grooves 4 and 5 of the main body 7. When bent and wound around the substantially U-shaped grooves 4 and 5, the tongue 13 of the metallic auxiliary member 11, the inner conductor 31 b of the coaxial cable 31, the inner conductor 32 b of the coaxial cable 32, and the metallic auxiliary member 11 The tongue pieces 16 are arranged in a row and in a substantially U shape along the corresponding guide grooves 3, 4, 5, 6, whereby the plug 2 of FIG. 1 is assembled.
[0013]
Moreover, in the plug 2 assembled in this way, the tongue pieces 13 and 16 and the internal conductors 31b and 32b are exposed on the surface of the plug 2, and the exposed tongue pieces 13 and 16 and the internal conductors are exposed. 31 b and 32 b itself become male contacts constituting the connector 1.
[0014]
On the other hand, the receptacle 21 shown by a dotted line in FIG. 1 has a male contact of the plug 2, that is, the inner conductors 31 b and 32 b of the plurality of coaxial cables 31 and 32 and the auxiliary member 11. Inner conductor contacts 24 and 25 and outer conductor contacts 23 and 26 are arranged at predetermined pitches at positions facing the tongue pieces 13 and 16, respectively.
[0015]
The inner conductor contacts 24 and 25 and the outer conductor contacts 23 and 26 are contacts having the same shape, and the structure of the contacts will be described by using the outer conductor contact 23 as a representative. , A tuning fork type tip 23a arranged toward the plug 2 and a leg 23b connected to a corresponding terminal of a printed wiring board (not shown).
Further, among the external conductor contacts 23 to 26, in particular, the external conductor contacts 23 and 26 have their legs 23b and 26b 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, a conceptual cross-sectional view of the main part of the cable connector 1 is shown in FIG. In addition, the guide groove 3 is inserted into the tuning fork tip 23a of the external conductor contact 23, and at the same time, the tuning fork tip 23a is disposed in the guide groove 3 and is a tongue piece wound around the guide groove 3. 13 is gripped from its upper and lower surfaces.
On the other hand, the external conductor contact 23 is connected to a ground terminal of a printed wiring board (not shown) by a leg 23b.
Therefore, the external conductor 31a and the external conductor 32a of FIG. 2 that 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 denoted by the same reference numerals. Further, reference numeral 27 in FIG. 3 indicates an upper surface in the receptacle 21, and reference numeral 28 indicates a lower surface in the receptacle 21.
[0016]
As described above, the cable connector 1 can be connected to the ground without providing a shield cover as in the prior art. Therefore, the structure of the cable connector is simplified and the manufacturing cost is reduced by not providing the shield cover. It is possible to reduce the size of the cable connector 1.
[0017]
In this manner, in this cable connector 1, since the external conductors 31 a and 32 a are connected to the ground via the metal auxiliary member 11 and the external conductor contact 23, the shield capacity is made of metal auxiliary. In the case where the cable connector 1 is covered with a shield cover in order to secure a sufficient shield capacity in response to noise problems caused by higher frequencies in recent electronic devices. Moreover, it is not necessary to form the shield cover as large as in the prior art.
[0018]
Further, in this cable connector 1, the shield capacity is secured by the metal auxiliary member 11 and the outer conductor contact 23 as described above. Therefore, according to the recent demand for miniaturization of the cable connector 1, the shield capacity is secured. Even if the cover is made small, the influence of the shield cover on the overall shield capacity can be minimized as much as possible, which is sufficient to cope with noise problems caused by high frequency in recent electronic devices. It is possible to secure a sufficient shield capacity, maintain the shield effect as high as possible, and perform signal transmission reliably.
[0019]
Therefore, according to the cable connector 1, the shield effect can be maintained as high as possible, signal transmission can be reliably performed , and the cable connector can be downsized.
[0020]
On the other hand, in this cable connector 1, when the plug 2 is attached to the receptacle 21, the other tongue piece 16 of the pair of tongue pieces 13, 16 is also connected to the outer conductor contact in the same manner as the one tongue piece 13 described above. 26, the tuning fork tip 26a grips the other tongue 16 from its upper and lower surfaces, while the external conductor contact 26 is connected to the ground terminal of the printed wiring board by the leg 26b, so that the external conductor 31a and the external conductor 32a are connected. Are collectively connected via the metal auxiliary member 11 and the outer conductor contact 26 (ground connection).
[0021]
Therefore, in this cable connector 1, the ground conductors of the outer conductor 31 a of the coaxial cable 31 and the outer conductor 32 a of the coaxial cable 32 are connected to the tongue piece 13 disposed on the metal auxiliary member 11 and the outer conductor contact 23. And the tongue piece 16 and the outer conductor contact 26 at the same time, whereby the shield capacity by the metal auxiliary member 11 and the shield capacity by the outer conductor contact are respectively set to the tongue piece and each outer conductor contact. Can be increased by the number of cables installed, so that the size of the cable connector can be kept small, and the shield capacity of the entire cable connector can be made larger than before. Can be secured.
Thus, corresponding to the noise problems caused by higher frequencies in recent years of electronic devices can further ensure a sufficient shielding capacity, it is possible to perform the transmission of the signal reliably maintain the shielding effect as much as possible high in recent years Can meet the demands for miniaturization of cable connectors.
[0022]
When the plug 2 is attached to the receptacle 21, the guide grooves 4 and 5 shown in FIG. 1 are inserted into the tuning fork tips 24a and 25a of the inner conductor contacts 24 and 25, and at the same time, the tuning forks tips 24a and 25a. Hold the inner conductors 31b and 32b disposed in the guide grooves 4 and 5 from the upper and lower surfaces, respectively, and the inner conductor contacts 24 and 25 corresponding to the inner conductors 31b and 32b are electrically connected to each other. Connecting. On the other hand, each of the inner conductor contacts 24, 25 is connected to the corresponding terminal of the printed wiring board by its legs 24b, 25b , so that the correspondence between the inner conductors 31b, 32b and the printed wiring board is achieved. Each terminal to be connected is electrically connected through the inner conductor contacts 24 and 25.
[0023]
Further, in this cable connector 1, since the tongue pieces 13 and 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 will not fall off the body 7.
[0024]
Further, in this cable connector 1, since the tongue pieces 13 and 16 of the metal auxiliary member 11 are grounded by being sandwiched between the external conductor contacts 23 and 26, the external conductors 31a and 32a are printed. The ground connection with the ground terminal of the wiring board can be reliably performed.
[0025]
In the cable connector 1 of this embodiment, the outer conductor contacts 23 and 26 have the same shape as the inner conductor contacts 24 and 25. However, in the cable connector of the present invention, the outer conductor contacts However, the outer conductor contact may be a contact having a shape different from that of the inner conductor contact.
Further, as the cable connector 1 of this embodiment, when the each outer conductor contacts 23, 26 and the inner conductor contacts 24, 25 and contacts of the same shape, the inner conductor and outer conductor contacts 23 and 26 The structure of the cable connector is simpler than that of the cable connector having a contact shape different from that of the contact contacts 24, 25, and the manufacturing work is further facilitated, and the manufacturing cost can be further reduced.
[0026]
Further, in the cable connector 1 of this embodiment, the cable to be electrically connected is a coaxial cable, but the cable used in the cable connector of the present invention is not limited to the coaxial cable, and the inner conductor and the outer conductor. For example, it may be a so-called two-core parallel shield line composed of one outer conductor and two inner conductors.
Further, the cable connector 1 of this embodiment is configured not to include a shield cover that covers the entire cable connector 1, but the cable connector of the present invention is not limited to this, and the shield cover is disposed. In this case, the shield capacity can be further increased and the shield effect can be further enhanced.
[0027]
【The invention's effect】
As described above, in the cable connector according to the present invention, a plurality of cables are arranged in a row, and are electrically connected to a metal auxiliary member that is collectively electrically connected to each external conductor of each cable. In addition, an external conductor contact that is electrically connected to the grounding terminal is disposed on the receptacle, so that when the plug is mounted on the receptacle, each external conductor is connected to the metal auxiliary member and the external conductor. Since it was decided to connect the ground terminal to the ground terminal via the contact, the shield capacity was secured by the metal auxiliary member and the contact for the external conductor, and it coped with the noise problem caused by the higher frequency in recent electronic equipment. In order to secure a sufficient shield capacity, it is not necessary to form a large shield cover as in the prior art.
[0028]
In addition, even if the shield cover is formed in a small size 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. A sufficient shield capacity corresponding to the noise problem caused by the higher frequency can be ensured, whereby the shield effect can be maintained as high as possible and signal transmission can be reliably performed.
[0029]
Therefore, according to the cable connector of the present invention, it is possible to reliably perform signal transmission by sufficiently increasing the shielding effect, and to achieve downsizing, thereby enabling a small personal computer that performs stable operation. Such a small electronic device 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 electrical connection of cables.
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 the mode before mounting | wearing with the main body of a plug.
FIG. 3 is a conceptual cross-sectional view of a cable connector according to the present invention, and shows a state in which an outer conductor of a cable is grounded via a metal auxiliary member and an outer 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 ... Multiple cables 31a, 32a ... External conductor 31b, 32b ... Inner conductor

Claims (1)

A plurality of cables arranged in a row, and a plug having a metal auxiliary member that is electrically connected to each outer conductor of each cable at once,
The plug is detachable and comprises a receptacle having a plurality of inner conductor contacts that are electrically connected to the inner conductors of the cables when the plug is attached .
The receptacle has a contact for an external conductor connected to the metal auxiliary member and connected to a ground terminal,
When the plug is attached to the receptacle, the external conductors are cable connectors that are collectively connected to the ground terminal via the metal auxiliary member and the external conductor contacts ,
The metal auxiliary member has a tongue piece wound around the main body of the plug at a position corresponding to the contact for the outer conductor.
The cable connector, wherein the outer conductor contact is formed in the same shape as the inner conductor contact and sandwiches the tongue piece .

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