JP2012059385A - High speed transmission electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the impedance of a contact part of a terminal high, to make short the electric length of a part of the contact part which corresponds to an effective fitting length, to make a resonance frequency high, and to stabilize a state of fitting to an opposite-side connector.SOLUTION: The present invention relates to a high speed transmission electric connector 1 having a plurality of signal terminals 6 and ground terminals arranged alternately side by side in an insulating housing 4. A signal terminal 6 and a ground terminal are each provided with a contact part 11 which comes into surface contact with each terminal of the opposite-side connector, and an air layer 8 is formed in the insulating housing 4 at a part corresponding to the effective fitting length L of the contact part 11 of the signal terminal 6. The air layer 8 is formed facing a reverse surface and both side faces of the contact part 11 of the signal terminal 6.

Description

  The present invention relates to a high-speed transmission electrical connector configured by arranging a plurality of signal terminals and a ground terminal in parallel in an insulating housing.

  In recent years, in communication devices and computers, the speed of transmission signals has increased, and the density of board mounting has been increasing, and the demand for electrical connectors that realize high-speed transmission of multiple signals has been increasing.

  As this type of conventional high-speed transmission electrical connector, for example, it is composed of an insulating housing and a plurality of terminals, and the terminal is formed by a distal end portion of a fitting portion formed in the insulating housing so that the mating connector can be fitted. There is known a connector in which a tip portion of the contact portion is held and a space is formed between an insulating housing other than the tip portion of the held contact portion (see, for example, Patent Document 1).

JP 2009-21068 A

  However, in the conventional high-speed transmission electrical connector described above, since the contact portion of the terminal and the insulating housing are not completely separated from each other, there is a problem that the effect of suppressing the decrease in impedance cannot be sufficiently expected, and the contact of the terminal. There is a problem that the electrical length of the portion corresponding to the effective fitting length of the portion becomes longer and the resonance frequency becomes lower.

  Further, since a step is formed between the front end portion of the contact portion of the terminal and the fitting portion, there is a problem that the fitting state with the mating connector becomes unstable.

  The present invention has been made to solve the above-described problems, and maintains the impedance of the contact portion of the terminal high, shortens the electrical length of the portion corresponding to the effective fitting length of the contact portion, and increases the resonance frequency. In addition, an object of the present invention is to provide a high-speed transmission electrical connector capable of stabilizing the fitting state with the mating connector.

  In order to achieve the above-described object, the present invention provides a high-speed transmission electrical connector in which a plurality of signal terminals and a ground terminal are arranged in parallel in an insulating housing, and the signal terminal and the ground terminal are respectively mated connectors. A contact portion that is in contact with each of the terminals on the surface, an air layer is formed in the insulating housing at a portion corresponding to an effective fitting length of the contact portion of the signal terminal, and the air layer is a contact of the signal terminal. It is formed so that it may face the back surface and both side surfaces of a part.

  With this feature, the impedance of the contact portion of the signal terminal can be kept high, the impedance can be matched, and transmission loss can be reduced. Further, the electrical length of the portion corresponding to the effective fitting length of the contact portion of the signal terminal can be shortened, and the resonance frequency can be increased.

  Moreover, in the high-speed transmission electrical connector according to the present invention, a notch portion is formed on the front surface portion of each contact portion, and the signal terminal, the ground terminal, and the insulating housing are integrally formed. The notch part is filled with the insulating housing, and the surface side of the tip part of each contact part is formed flat.

  With this feature, the mating operation with the mating connector can be performed smoothly and reliably, and the mating state can be stabilized.

  According to the high-speed transmission electrical connector according to the present invention, the impedance of the contact portion of the terminal is kept high, the electrical length of the portion corresponding to the effective fitting length of the contact portion is shortened, the resonance frequency is increased, and the counterpart side Various excellent effects such as being able to stabilize the fitting state with the connector can be obtained.

It is a disassembled perspective view which shows the high-speed transmission electrical connector which concerns on embodiment of this invention. It is a perspective view which shows the connector main body of the high-speed transmission electrical connector which concerns on embodiment of this invention. It is a perspective view which shows the connector main body of the high-speed transmission electrical connector which concerns on embodiment of this invention. It is a top view which shows the connector main body of the high-speed transmission electrical connector which concerns on embodiment of this invention. It is a top view which expands and shows the principal part of FIG. 4A. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is sectional drawing which expands and shows the C section of FIG. It is a disassembled perspective view which shows the high-speed transmission electrical connector which concerns on embodiment of this invention, and the other party connector. It is sectional drawing which shows the state which made the other party connector fit to the high-speed transmission electrical connector which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a high-speed transmission electrical connector according to an embodiment of the present invention. A high-speed transmission electrical connector 1 according to this embodiment is unidirectionally arranged inside a case 2 having a flat horizontally long rectangular tube. A plurality (10 in the figure) of connector main bodies 3 are inserted in a plurality of stages (two stages and five lines in the figure) from the bottom (shown in the figure), and are mounted on a substrate (not shown). It has become so.

  2 is a perspective view showing the connector body 3 from one direction, FIG. 3 is a perspective view showing the connector body 3 from the other direction, FIG. 4A is a plan view showing the connector body 3, and FIG. 4B is an enlarged view of the main part of FIG. 5 is a cross-sectional view taken along the line AA in FIG. 3, FIG. 6 is a cross-sectional view taken along the line BB in FIG. 3, and FIG. 7 is an enlarged cross-sectional view showing a portion C in FIG. 3 is a substantially rectangular plate-shaped insulating housing 4, a ground plate 5 provided on one surface side of the insulating housing 4, and a plurality (in the figure) alternately arranged at predetermined intervals on the other surface side of the insulating housing 4. , Six signal terminals 6 and a plurality (seven in the drawing) of ground terminals 7 are provided.

  The insulating housing 4 is molded so as to be inserted into the case 2, and a plurality (six in the drawing) of air layers 8 are predetermined at one end (upper in the drawing) of the insulating housing 4. It is formed at intervals.

  The ground plate 5 is formed of a metal plate and has a central portion bent in a crank shape. The ground plate 5 has a plurality (12 in the drawing) of cut-and-raised portions 9, and as best shown in FIG. 7, one end (upper end in the drawing) 10 of the ground plate 5. Is bent 90 ° inward.

  The signal terminal 6 and the ground terminal 7 are formed by punching a metal plate and partially bending it, and are integrally formed with the insulating housing 4, and contact portions 11, 12 at one end (upper end in the figure), respectively. Is formed.

  As best shown in FIG. 7, the front end portions 13 and 14 of the contact portions 11 and 12 are formed with notches 15 and 16 on the surface side, respectively, so that the signal terminal 6 and the ground terminal 7 and the insulating housing 4 are integrally molded, so that the cutout portions 15 and 16 are filled with the insulating housing 4, and the front end portions 13 and 14 of the contact portions 11 and 12 are formed flat.

  Further, the other end portions (lower end portions in the drawing) of the signal terminal 6 and the ground terminal 7 are bent 90 ° outward to form substrate mounting portions 17 and 18.

  An air layer 8 of the insulating housing 4 is disposed in a portion (stub portion) 19 corresponding to the effective fitting length L (see FIG. 6) of the contact portion 11 of the signal terminal 6, and the contact portion 11 of the signal terminal 6 The tip portion 13 is supported by the insulating housing 4. As shown well in FIG. 5, the air layer 8 is formed so as to face the back surface 20 and both side surfaces 21 of the contact portion 11 of the signal terminal 6, whereby the signal terminal 6 is connected to the contact portion 11. A portion 19 corresponding to an effective fitting length L (for example, 1.2 mm) of 11 is supported by the insulating housing 4 in a state of being completely separated from the insulating housing 4.

  4B, the air layer 8 is formed up to the back side of the portion 30 where the signal terminal 27 (see FIGS. 8 and 9) of the mating connector 24 contacts. Since the contacting portion 30 receives a strong contact pressure when contacting the signal terminal 27 of the mating connector 24, the vicinity portion 31 on the back side of the contacting portion 30 is reinforced by the insulating housing 4.

  As well shown in FIG. 5, the contact portion 12 of the ground terminal 7 is supported by the insulating housing 4 so that the back surface 22 and both side surfaces 23 are in contact with the insulating housing 4.

  Next, the operation when the mating connector is fitted to the high-speed transmission electrical connector having the above-described configuration will be described with reference to the drawings.

  FIG. 8 is an exploded perspective view showing the high-speed transmission electrical connector 1 and the mating connector 24 according to the embodiment of the present invention, and the mating connector 24 of the high-speed transmission electrical connector 1 according to the embodiment of the present invention. By inserting a plurality (10 in the figure) of connector bodies 26 from one direction (upper in the figure) into the case 25 having a lower profile than the case 2 in a plurality of stages (in the figure, two stages and 5 rows). It is comprised and it fits into the high-speed transmission electrical connector 1 which concerns on embodiment of this invention from one direction (illustration upper direction). In addition, the connector body 26 of the mating connector 24 has a signal terminal 27 and a ground terminal so as to contact the signal terminal 6 and the ground terminal 7 of the connector body 3 of the high-speed transmission electrical connector 1 according to the embodiment of the present invention. 28 are provided.

  FIG. 9 is a cross-sectional view showing a state in which the mating connector 24 is fitted from above onto the high-speed transmission electrical connector 1 according to the embodiment of the present invention mounted on a substrate (not shown). An air layer 8 is formed in the insulating housing 4 so as to face the back surface 20 and both side surfaces 21 of the contact portion 11 of the signal terminal 6, and the effective fitting length L of the contact portion 11 of the signal terminal 6 (see FIG. 6). ) Is completely separated from the insulating housing 4, so that when the signal terminals 6 and 27 are in contact with each other, the impedance of the contact portion 11 of the signal terminal 6 can be kept high and the impedance can be matched. Thus, transmission loss can be reduced.

  Furthermore, the electrical length of the portion 19 corresponding to the effective fitting length L of the contact portion 11 of the signal terminal 6 can be shortened to increase the resonance frequency, and in particular, transmission characteristics in a high frequency band of 3 GHz or more. For example, at 12.5 GHz, the differential impedance can be maintained at 100 ± 10Ω, the crosstalk at 25 dB or less, the reflection loss at 10 dB or more, and the insertion loss at 1 dB or less.

  Even if the air layer 8 is formed on the insulating housing 4 so as to face the back surface 20 and both side surfaces 21 of the contact portion 11 of the signal terminal 6, the tip portion 13 of the signal terminal 6 is firmly supported by the insulating housing 4. In addition, since the contact portion 12 of the ground terminal 7 is supported by the insulating housing 4, the contact strength between the signal terminals 6, 27 and the ground terminals 7, 28, the signal terminals 6, 27, and the ground terminal 7 , 28 can be sufficiently secured.

  Further, notches 15 and 16 are formed at the tip portions 13 and 14 of the contact portions 11 and 12 of the signal terminal 6 and the ground terminal 7, respectively, and the signal terminal 11 and the ground terminal 12 and the insulating housing 4 are integrally formed. As a result, the notches 15 and 16 are filled in the insulating housing 4 and the front end portions 13 and 14 of the contact portions 11 and 12 are formed flat, so that the mating operation with the mating connector 24 is performed. It can be performed smoothly and reliably, and the fitting state can be stabilized.

  In the above description of the embodiment of the present invention, the air layer 8 is provided in the insulating housing 4 only in the portion 19 corresponding to the effective fitting length L of the contact portion 11 of the signal terminal 6. For example, the air layer 8 may be provided in the insulating housing 4 in a portion corresponding to the effective fitting length of the contact portion 12 of the ground terminal 7 in this case. The effect obtained can be further enhanced.

  In the above-described embodiment of the present invention, the case where the signal terminals 6 and the ground terminals 7 are alternately arranged one by one has been described as an example. However, the present invention is limited to this case. Instead, for example, the signal terminal 6 and the ground terminal 7 are arranged in parallel in another arrangement pattern, such as an arrangement pattern of a differential circuit in which two signal terminals 6 are arranged in parallel between the ground terminals 7. It is also applicable to cases.

  Moreover, since the above description of the embodiment of the present invention describes a preferred embodiment of the high-speed transmission electrical connector according to the present invention, various technically preferable limitations may be given. However, the technical scope of the present invention is not limited to these embodiments unless specifically described to limit the present invention. Furthermore, the components in the embodiment of the present invention described above can be appropriately replaced with existing components and the like, and various variations including combinations with other existing components are possible. The description of the embodiment of the present invention described above does not limit the contents of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 High-speed transmission electrical connector 4 Insulation housing 6 Signal terminal 7 Ground terminal 8 Air layer 11 Contact part of (signal terminal) 12 Contact part of (ground terminal) 15 Notch part of (signal terminal) 16 Notch part of (ground terminal) 19 Part corresponding to effective fitting length 20 Back surface 21 Side surface 24 Mating connector 27 Signal terminal 6 (mating connector)
28 Contact terminals (for mating connector)

Claims (2)

A high-speed transmission electrical connector in which a plurality of signal terminals and ground terminals are arranged in parallel in an insulating housing,
The signal terminal and the ground terminal are respectively provided with contact portions that contact the respective terminals of the mating connector on the surface, and the insulating housing has an air layer in a portion corresponding to the effective fitting length of the contact portion of the signal terminal. And the air layer is formed so as to face the back surface and both side surfaces of the contact portion of the signal terminal.   A notch is formed on the front side of each contact portion, and the signal terminal, the ground terminal, and the insulating housing are integrally formed to fill the notch with the insulating housing. 2. The high-speed transmission electrical connector according to claim 1, wherein the front end portion of the contact portion is formed flat.

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