JPS6317176Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a narrow pitch flat cable connector in which signal contacts and grounding contacts are arranged alternately at regular intervals, with two rows of signal contacts on the socket side and a shield plate between the contacts. This invention relates to a shielded connector for a flat cable in which a flat cable is arranged.

There is a conventional narrow pitch high frequency circuit connector using a flat cable as shown in FIG. Socket A has grounding contact _2A facing signal contact _1A , and plug B that fits into socket A has signal contact _1B .
and a grounding contact _2B . As shown in FIG. 1c, the grounding contact _2B of the plug B is integrated with a bus bar _22B and has an arch-shaped contact _23B arching upward between the two grounding contacts _2B . When the insulators 31 _B and 32 _B are assembled with the flat cable 4 sandwiched between them as shown in _FIG . 41 high frequency mutual interference is prevented. This type of connector uses several signal conductors as grounding conductors in order to prevent mutual interference between adjacent signal conductors. However, in order to further improve the high frequency characteristics, a connector with this level of structure cannot be used, and it is necessary to insert a shielding plate between the signal contacts, but since the pitch is narrow, there is a risk of short circuits. Even if a coating was applied to the surface, it had the drawback of peeling off during use.

In view of the above, an object of the present invention is to provide a shielded connector for a narrow pitch flat cable that eliminates mutual interference of high frequencies by using a shielding plate and has excellent high frequency characteristics without the risk of short circuit.

The shield connector for flat cables according to the present invention has a pair of diagonally opposed signal contacts arranged at equal intervals in a base insulator, and a shield plate is placed between each pair of signal contacts and fixed to the shield plate. This device is characterized in that the bus bar is provided with ground contacts at equal pitches to correspond to the signal contact rows, and to be fitted with a plug.

The present invention will be described below using embodiments with reference to the drawings.

FIG. 2 shows an embodiment of the present invention. The shield connector for flat cables of the present invention has signal contacts 1 arranged diagonally opposite each other in a staggered manner, ground contacts 2 that fit into plugs corresponding to the signal contacts, and a base insulator in which the signal contacts are arranged. A shield plate 5 that holds the ground contact 2 and is disposed between the opposing signal contacts 1, a cover insulator 32 that forms a casing that opens in the plug entry direction together with the base insulator 31, etc. configured.

The signal contact 1 is made of a conductive material, and includes an arcuate contact portion 11, a substantially U-shaped spring portion 12 following the contact portion, a vertically extending leg portion 13, and a retaining member having a protrusion 14a in the middle of the spring portion. It has a stop part 14.

Two rows of signal contact insertion grooves 33 are formed in the base insulator 31 in a staggered manner in the longitudinal direction. Further, an S-shaped groove 34 is formed between each pair of insertion grooves so that the two rows of insertion grooves 33 are separated into pairs. The signal contacts 1 are inserted into the insertion grooves 33 provided in two rows in a staggered manner with the contact portions 11 facing each other, and are locked into the base insulator 31 by the projections 14a of the locking portions.

The shielding plate 5 is stamped and formed from a conductive material such as a phosphor bronze plate, and as shown in FIG. 3, it has a terminal 51 extending vertically in the center, and a connecting part 52 extending slightly diagonally on one side, and a shielding part following the terminal 51. Part 5
3 and the other side has a rectangular holding part 5 extending upward.
4. The shielding plate 5 is inserted into the S-shaped groove 34 of the base insulator with the terminal 51 first, and is inserted into the through hole 36 (fourth hole) provided at the bottom of the S-shaped groove.
Terminal 51 is fixed in Figure b). Shielding plate 5
isolates and shields a pair of signal contacts 1 that are diagonally opposed and fixed to the insulator, and also holds and fixes the bus bar 22 in a slit 55 provided in the holding part 54. bus bar 22
A plurality of ground contacts 2 extend from the ground contacts 2 at equal pitches, and the contact portions 21 at the ends form an arc and are located directly above the contact portions 11 of the signal contacts. The cover insulator 32 forms a housing by fitting the arm 38 into the recess 37 of the base insulator 31.

FIG. 4 shows a state in which the signal contact and the ground contact are attached to the insulator together with the shield plate. The signal contact 1 is locked to the base insulator 31 by the locking part 14a, and the leg part 1
3 is fixed through the base insulator 31 and the substrate 6 adjacent thereto. The shielding plate 5 that holds the bus bar 22 with the slit 55 has a holding portion 54.
The upper end of the cover insulator is inserted and fixed into a groove (not shown) provided in the cover insulator. The cover insulator 32 forms an opening 35 together with the base insulator 31, into which a plug (indicated by a two-dot chain line) enters. The contact parts of the plug are the arc-shaped contact parts 1 of the signal contact 1 and the ground contact 2.
The tips of 1 and 21 are inserted into the "induction" and the contact parts fit together.

As mentioned above, the flat cable shield connector of the present invention has signal contacts facing each other and arranged in two staggered rows, so the pitch between the rows is 2.
Furthermore, since a shielding plate is arranged for each diagonally opposed signal contact, it has an excellent shielding effect, and there is no short circuit between the shielding plate and the signal contact, which is extremely advantageous.

Note that although the above description has been made using a specific embodiment, the present invention is not limited thereto, but naturally includes various modifications within the scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 shows a conventional narrow pitch flat cable connector; a is a front view of the socket, b is a plan view of the plug, and c is a perspective view showing the ground contact.
d is an exploded perspective view of the plug, FIG. 2 is a partially sectional perspective view showing an embodiment of the present invention, and FIG. 3 is a perspective view showing the ground contact and shielding plate of the connector of the present invention.
FIG. 4a is a plan view showing how the signal contacts, ground contacts and shielding plate are attached, and FIG. 4b is a sectional view. 1...Signal contact, 11...Signal contact contact portion, 2...Grounding contact, 21...
...Grounding contact contact part, 22...Bus bar,
5... Shielding plate, 54... Holding part.

Claims (1)

[Scope of utility model registration request] In a connector that mates with a plug that has a signal contact on one side of the flat cable surface and a grounding contact on the other side, a pair of diagonally opposing signal contacts are arranged at equal intervals, and the pair of signal contacts are arranged at equal intervals. A shielding plate is provided between them for shielding, and grounding contacts of equal pitches integrated with a bus bar are fixed to a holding part provided on the shielding plate, and between the contact parts of the signal contact row and the grounding contact row. A shielded connector for flat cables in which a plug is fitted.