JPH0629047U - connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a connector that has improved characteristic impedance matching and shielding properties, has transmission characteristics capable of supporting high-speed signals, and can be mounted at high density. [Structure] The ground contact 33 of the receptacle-side connector is set so as to surround the signal contacts 11 and 31 of the plug-side connector and the receptacle-side connector when the plug-side connector and the receptacle-side connector are connected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shield type connector, and more particularly to a connector for a relatively high speed (high frequency) signal such as a computer, a communication device or an FA device.

[0002]

[Prior art]

 In the conventional connector, the signal of the electronic device in which the connector is used is often relatively low speed (low frequency), and the transmission characteristics of the connector itself are not a problem. For this reason, connectors that do not give special consideration to transmission characteristics were common. For example, in many cases, contacts having the same shape as shown in FIG. 8 (a plug-side contact 90 and a receptacle-side contact 91) are arranged in parallel at a predetermined pitch.

Further, in consideration of the transmission characteristics of the connector itself for a relatively high-speed signal, there is a type in which the contact of a normal type connector is grounded at a constant rate. There was a type that separated the transmission path and used independent coaxial connectors.

[0004]

[Problems to be solved by the device]

 However, it is difficult to match the characteristic impedance of the connector part to the circuit in the type in which the contact of the normal type connector is grounded at a certain ratio, and the signal shield between signals is imperfect. There is a problem that the signal deteriorates due to noise and crosstalk, and the transmission characteristics are not sufficient for high speed signals.

On the other hand, in the type that uses an independent coaxial connector, it is difficult to mount the connectors at a high density, and the mounting density is lowered. Even if it could be mounted at a high density, the structure would be complicated and the manufacturing cost would be high.

An object of the present invention is to provide a high-density connector which can improve matching of characteristic impedance and shield property, can have high transmission characteristics and can cope with high-speed signals. is there.

[0007]

[Means for Solving the Problems]

 According to the present invention, the plug-side connector and the receptacle-side connector are connected to each other, and each of the plug-side connector and the receptacle-side connector has a pair of contacts. In a connector in which one of the pair of contacts of each receptacle-side connector serves as a signal contact and the other serves as a ground contact, the ground-side contact of the receptacle-side connector includes the plug-side connector and the plug-side connector. A connector characterized in that it is set so as to surround each of the signal contacts of the plug-side connector and the receptacle-side connector when connected to the receptacle-side connector.

According to the present invention, the plug-side connector and the receptacle-side connector are connected to each other, and the plug-side connector and the receptacle-side connector each have a pair of contacts, and the plug-side connector Of the contacts forming the pair of the receptacle-side connector and the receptacle-side connector, one of the contacts serves as a signal contact and the other serves as a ground contact, and when the plug-side connector and the receptacle-side connector are connected, Each of the ground contacts of the plug-side connector and the receptacle-side connector cooperates with each other so as to surround each of the signal contacts of the plug-side connector and the receptacle-side connector. Is obtained .

[0009]

[Action]

 According to the present invention, since the signal contact is surrounded by the ground contact, adjacent signal contacts can be shielded at the time of connection.

[0010]

【Example】

 Hereinafter, a connector according to an embodiment of the present invention will be described with reference to the drawings.

1A and 1B are perspective views showing a plug-side contact and a receptacle-side contact used in a connector according to a first embodiment of the present invention.

In FIG. 1A, a contact (hereinafter referred to as a plug-side contact) 10 of a plug-side connector used for the connector according to the first embodiment of the present invention includes a signal contact 11 and a ground contact 13. And are facing each other. On the other hand, in FIG. 1B, the contact 30 of the receptacle-side connector (hereinafter, referred to as “receptacle-side contact”) is separated from the upright signal contact 31 on both planes and one side surface of the signal contact 31. The ground contact 33 has a U-shaped cross section so as to face each other. That is, the ground contact 33 surrounds both the flat surfaces and one side surface of the signal contact 31.

Next, a description will be given of a structure in which the contacts 10 and 30 are respectively incorporated into an insulator to form a plug-side connector and a receptacle-side connector. FIG. 2 is a partially broken perspective view showing a plug-side connector according to this embodiment, and FIG. 3 is a partially broken perspective view showing a receptacle-side connector according to the first embodiment.

First, the configuration of the plug-side connector will be described. In FIG. 2, the plug-side connector 1 of the first embodiment has an insulator 15 in which a plurality of plug-side contacts 10 are implanted. The insulator 15 has a rectangular bottom surface portion 15a and a side wall portion 15b provided upright around the bottom surface portion 15a. Contact insertion holes 15c are formed in the bottom surface portion 15a at predetermined intervals in the longitudinal direction of the connector. Further, a standing portion 15d is provided beside the insertion hole 15c so as to sandwich the insertion hole 15c in the connector longitudinal direction. Engagement recesses 15f are formed on the surface of each standing portion 15d on the width direction side of the connector. The signal contact 11 and the ground contact 13 extending from the insertion hole 15c toward the inside of the insulator 15 are fitted into these engaging recesses 15f so as to be back to back with the standing portion 15d interposed therebetween. The contacts 11 and 13 are in a state of being erected and held by the erected portion 15d.

Next, the configuration of the receptacle-side connector will be described. In FIG. 3, the receptacle-side connector 3 of the first embodiment has an insulator 35 having a plurality of receptacle-side contacts 30 planted therein. A groove portion 37 that extends in the longitudinal direction and opens to the upper surface side is formed in the center portion in the width direction of the insulator 35. In the groove portion 37, the signal contact 31 and the ground contact 33 are erected upright while maintaining the positional relationship shown in FIG.

The insulator 35 of the receptacle-side connector 3 is fitted in the space surrounded by the side wall portion 15b of the plug-side connector 1 shown in FIG.

Next, the mating connection state of the plug-side connector 1 and the receptacle-side connector 3 will be described.

FIG. 4 is a cross-sectional view showing a fitted state of the plug-side connector and the receptacle-side connector, and FIG. 5 is a vertical cross-sectional view showing a fitted state of the plug-side connector and the receptacle-side connector. .

4 and 5, when the receptacle-side connector 3 is fitted into the space defined by the insulator side wall portion 15b of the plug-side connector 1, the signal contact 11 of the plug-side connector 1 becomes the receptacle-side connector. The signal contact 31 of 3 is contacted. Similarly, as best seen from FIG. 5, the ground contact 13 of the plug-side connector 1 is also in contact with one of the pair of facing surfaces of the ground contact 33 of the receptacle-side connector 3. .

That is, the signal contacts 11 and 31 of both connectors are surrounded on three sides by the ground contact 33 of the receptacle-side connector 3. Therefore, the optimum characteristic impedance can be obtained by changing (adjusting) the distance between the signal contact 31 and the ground contact 35. Further, as can be seen from FIG. 4, the space between the adjacent signal contacts 31 is shielded by the ground contact 33, and the occurrence of crosstalk can be suppressed.

In FIG. 5, reference numeral 7 is a board connected to the plug-side connector 1, and reference numeral 8 is a board connected to the receptacle-side connector 3. In addition, in FIG. 5, both connectors 1 and 3 are standing perpendicular to the boards 7 and 8, but the present invention is not limited to this, and by changing the shape of the terminal portion, It goes without saying that they can be arranged in parallel or can be surface mounted.

Next, a connector according to a second embodiment of the present invention will be described.

FIGS. 6A and 6B are perspective views showing the plug-side contact and the receptacle-side contact used in the connector according to the second embodiment. 6 (a) and 6 (b), the second embodiment differs from the first embodiment only in the shape of the plug-side contact, and the receptacle-side contact 30 has the same shape as that of the first embodiment. Is.

In FIG. 6A, in the plug-side contact 40, the signal contact 41 and the ground contact 43 face each other. Further, the ground contact 43 is formed with an overhanging portion 43a from one side surface thereof toward the side of the signal contact 41. That is, the projecting portion 43a of the ground contact 43 of the plug-side contact 40 corresponds to the portion of the receptacle-side contact 30 where the ground contact 33 does not extend.

FIG. 7 shows a plug-side connector in which a plurality of plug-side contacts are implanted as in the first embodiment, and a receptacle-side connector 30 in which a plurality of receptacle-side contacts 30 are implanted as in the first embodiment. It is a cross-sectional view showing a fitted state with. In FIG. 7, the protrusion 43a is provided on the ground contact 43 of the plug-side contact 40, so that the adjacent signal contacts 41 are doubly shielded, and the transmission characteristics are further improved. It becomes possible.

[0026]

[Effect of device]

 According to the connector of the present invention, the pair of contacts in each connector are separately used for signal and ground, and the signal contact is surrounded by the ground contact, so that the characteristic impedance It is possible to obtain a connector having improved transmission characteristics and excellent transmission characteristics with less crosstalk. Moreover, according to the present invention, since the structure is extremely simple, the size of the connector can be sufficiently reduced. Therefore, according to the present invention, it is possible to improve the packaging density while improving the transmission characteristics as described above.

[Brief description of drawings]

FIG. 1 is a perspective view showing a contact used in a connector according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a plug-side connector according to a first embodiment of the present invention.

FIG. 3 is a perspective view showing a receptacle-side connector according to a first embodiment of the present invention.

4 is a cross-sectional view showing a fitted state of the plug-side connector shown in FIG. 2 and the receptacle-side connector shown in FIG.

5 is a vertical cross-sectional view showing a fitted state of the plug-side connector shown in FIG. 2 and the receptacle-side connector shown in FIG.

FIG. 6 is a perspective view showing a contact used in a connector according to a second embodiment of the present invention.

FIG. 7 is a transverse cross-sectional view showing a fitted state of a plug-side connector and a receptacle-side connector according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing a contact used in a conventional connector.

[Explanation of symbols]

 1 Plug side connector 3 Receptacle side connector 7, 8 Board 10 Plug side connector contact 11 Signal contact 13 Ground contact 30 Receptacle side connector contact 31 Signal contact 33 Ground contact 40 Plug side connector 41 Signal contact 43 Gland contact 43a Overhang part

Claims (2)

[Scope of utility model registration request] 1. A plug-side connector and a receptacle-side connector that are connected to each other, wherein the plug-side connector and the receptacle-side connector each have a pair of contacts, and the plug-side connector and the receptacle-side connector respectively. Among the contacts forming the pair, one of the contacts is a signal contact, and the other is a ground contact, wherein the ground contact of the receptacle-side connector is
A connector which is set so as to surround each of the signal contacts of the plug-side connector and the receptacle-side connector when the plug-side connector and the receptacle-side connector are connected. 2. A plug-side connector and a receptacle-side connector that are connected to each other, wherein the plug-side connector and the receptacle-side connector each have a pair of contacts, and the plug-side connector and the receptacle-side connector respectively. In a connector in which one of the pair of contacts is a signal contact and the other is a ground contact, when the plug-side connector and the receptacle-side connector are connected, the plug-side connector and the receptacle-side connector The connector, wherein each of the ground contacts cooperates with each other so as to surround each of the signal contacts of the plug-side connector and the receptacle-side connector.