JP3466477B2 - Connector for IC card connector device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card connector device mounted on equipment used by mounting an IC card, and more particularly, to an IC card connector device for fitting a substrate having pin contacts attached thereto. Regarding connectors.

[0002]

2. Description of the Related Art Conventionally, as a connector device for an IC card, there has been provided a type in which an IC card such as a PC card can be mounted. In such an IC card connector device, a pin group to be mounted by inserting an IC card and a plurality of insertion holes into which the pin group is inserted are formed. After inserting the pin group into these insertion holes, soldering is performed. It mainly includes a printed circuit board for fixing the pin group, and a connector (board connector) having a case in which a groove into which the lower end of the printed circuit board is inserted is formed and fixed by soldering.

Further, a terminal which is elastically contacted with the inserted printed circuit board is arranged in the case of the connector.
In addition, a conductor portion is formed on the surface or both surfaces of the lower end of the printed board, and contact pieces of terminals to be described later are elastically contacted and connected to the conductor portion. Such terminals are shown in FIGS. 5 (a) and 5 (b). Figure 5 (a)
The terminal 201 shown in FIG. 2 includes a terminal portion 202, an extension portion 203 extending from one end of the terminal portion 202, a U-shaped first bent portion 204 provided at an end portion of the extension portion 203, and a first bent portion 204. A first elastic piece 205 extending from one end of the first elastic piece 205 to face the extension portion 203, a V-shaped second bent portion 206 provided at the lower end of the first elastic piece 205, and upward from the second bent portion 206. Second elastic piece 20 extended to
7 and a contact piece 208 which is formed at the tip of the second elastic piece 207 and is in pressure contact with the conductor portion of the printed circuit board.
It is formed in an S shape as a whole. A plurality of terminals 201 are attached to the insulating case in one or two rows. Terminal 201 shown in FIG. 5 (a), when the printed circuit board into the groove of the case is inserted, the first such elastic piece 205 is pressed and bent terminal 201 by the print board, and the such first elastic piece 205 Contact piece 208 due to elastic force
Is elastically contacted and connected to the conductor portion at the lower end of the printed circuit board.

Further, another terminal 211 shown in FIG. 5 (b) is
The terminal portion 212, the protruding portion 213 that extends upward from one end of the terminal portion 212, the elastic piece 214 that extends laterally from the lower portion of the protruding portion 213, and is bent and formed upward, and the elastic piece 2
The contact piece 215 is formed at the tip of 14 and comes into pressure contact with the conductor portion of the printed circuit board, and is formed in a J shape as a whole. A plurality of terminals 211 are attached to the insulating case in one or two rows. Terminal 211 shown in FIG. 5 (b), when the printed circuit board into the groove of the case is inserted, the elastic pieces 21 of the terminal 211 by PCB
4 is pushed and bent, and the elastic force of the elastic piece 214 causes the contact piece 215 to be elastically contacted and connected to the conductor portion at the lower end of the printed circuit board.

[0005]

However, the diagram5
The terminal 201 shown in (a) has an S-shaped first elastic member.
A sufficient amount of bending of the piece 205, etc. is ensured, and
A sufficient contact pressure is obtained between the conductor portion at the lower end and the contact piece 208.
However, for that reason, the signal line path should be connected to the bottom edge of the printed circuit board.
From the contact point between the body and the contact piece 208, the S-shaped elastic piece 20
5,207, folds 204,206, and extensions
Since it reaches the terminal section 202 via 203 etc.,
The signal line is long, the impedance is high, and the transmission signal
There was a problem such as attenuation and delay of. Also print
Since the lower end of the board is held by elastic force, it does not vibrate.
It was easy and ground bounce was likely to occur. one
Person, figure5In the terminal 211 shown in (b), the elastic piece 214 is short.
Although the signal line path is short, on the other hand, the bending of the elastic piece 214
Since the amount becomes small, sufficient contact pressure cannot be obtained.
It was

The object of the present invention is to reduce the level of attenuation, delay, etc. of a transmission signal to a very small level, to reduce the problem of ground bounce, and to reduce the amount of ground bounce at the initial stage of mating with a conductor portion of a printed circuit board. Light contact, sufficient contact pressure can be obtained when mating is completed, and electrical characteristics can be improved.
It is to provide a connector for a C card connector device.

[0007]

Means for Solving the Problems The upper SL problem, a terminal portion,
An extension portion extending from one end of the terminal portion; a U-shaped first bent portion provided at an end portion of the extension portion;
A first elastic piece extending from one end of the bent portion to face the extension portion, and U provided at an end portion of the first elastic piece.
A second bent portion having a V shape, a second elastic piece extending from one end of the second bent portion so as to face the first elastic piece, and a contact formed at a tip of the second elastic piece. A terminal formed of a piece and an insulating case to which the terminal is attached, and the second bent portion is provided with the
Is provided with a contact portion for contacting the extension portion, when the printed circuit board in the IC card connector device is inserted into the case, together with the conductor portion of the printed circuit board is in contact with the contact piece, the contact portion is elastic contact with the extended portion
While short-circuiting between the contact portion and the extension portion,
It is solved by the first means that a part of the second elastic piece is elastically pressed at the terminal portion side of the extension portion . The above problem can be solved by the second means attached to the case in the first means in a state where the two contact pieces face each other.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the entire IC card connector device according to the first embodiment, FIG. 2 is a longitudinal sectional view of an essential part of a connector portion of the IC card connector device shown in FIG. 1, and FIG. It is a figure.

First, the entire IC card connector device will be described. The IC card connector device includes a pin housing 11 having a large number of pin contacts 10 arranged in a predetermined arrangement.
The header portion 12 is press-fitted and fixed to the two, and two substantially U-shaped frames 14 for guiding the IC card 13 at the time of insertion and removal.
And an eject lever 15 and a push rod 16 as an eject mechanism attached to each frame 14. The pin contact 10 has a substantially cylindrical contact portion 17 at one end,
A bulging portion 19a and a locking portion 19b for locking the locking portion in the pin insertion hole 11a of the pin housing 11 to prevent it from coming off are formed near the other end of the contact portion 17. The header portion 12 includes two pin housings 11 in which a predetermined number of pin contacts 10 for two sets are press-fitted and fixed,
11 is a schematic configuration. That is, in the pin housing 11, the pin housings 11 in which one set of pin contacts 10 are press-fitted and fixed are stacked in two layers, and the terminal portions 18 of each pin contact 10 are laminated boards (printed boards)
It is configured by fixing the 20 signal patterns with solder 63. In addition, each pin housing 11 is
They are integrated by fitting protrusions into the fitting holes.

The header portion 12 is mounted on the mounting surface of the main printed board 21, and the lower end edge of the laminated board 20 is mounted on the main printed board 21.
It is fitted into the fitting groove 23 and soldered. In the connector 22, a pair of terminals 27 for sandwiching the both surfaces of the laminated substrate 20 in pressure contact are housed in a case 26.

The terminal 27, as shown in FIG.
7a and an extension portion 27b extending from one end of the terminal portion 27a
A U-shaped first bent portion 27c provided at an end of the extension portion 27b, and a first elastic piece 27d extending from one end of the first bent portion 27c so as to face the extension portion 27b,
A U-shaped second bent portion 27e provided at the end of the first elastic piece 27d, and a second elastic piece extending from one end of the second bent portion 27e so as to face the first elastic piece 27d. Two
7f and a contact piece 27g formed at the tip of the second elastic piece 27f, and has an S-shape as a whole.
Further, a contact portion 27h is bent and formed on the terminal portion 27a (extension portion 27b) side of the second bent portion 27e. Then, in this terminal 27, the contact portion 27h has an extension portion 27b (terminal portion 27a in a state where the laminated substrate 20 is fitted as shown in FIG. 2).
Side) is set to be in contact with.

Each terminal portion 27a of the pair of terminals 27 is shown in FIG.
As shown in FIG. 3, the connector 22 is led out of the connector 22 and soldered to a circuit pattern (not shown) on the main printed board 21. In addition, the pair of terminals 27, 27, that is, the case in which a plurality of contact pieces are opposed to each other in two rows is attached to the case 26, but the present invention is not limited to this. You may make it attach only one terminal to the case 26 and press-contact only one surface of a printed circuit board.

Reference numeral 14b is a rod support frame for supporting the push rod 16, 42 is a bridge portion for connecting the rear end portions of the concave groove forming portions 41 of both frames 14, 43 is a grounding metal fitting, 4
3 a 43 b is a pair of curved elastic pieces extending toward the tip side of the grounding metal fitting 43, 38 is a shroud (metal plate) that contacts the case of the IC card 13 from the opening 39 of each pin housing 11 and grounds, 40 is a laminated substrate of the shroud 38 The terminal portion provided on the side of 20 and connected to the ground pattern of the laminated substrate 20, 72 is a metal cover that covers the upper and lower openings of each frame 14, and 73 is fitted to the side surface of the frame 14 and is attached to the main printed circuit board 21. It is a spacer for mounting.

In this embodiment, a pin housing 11 having pin contacts 10 arranged in a predetermined array is fixed to each of the upper and lower stages, and a card insertion opening 14a is provided at the front end portion, and the front and rear portions are attached to the pin housing 11. A frame 14 and an eject lever 15 and a push rod 16 supported by the frame 14, and an IC card connector device for two IC cards 13 into which the IC cards 13 can be inserted in both upper and lower stages. Has become.

As shown in FIG. 2, the laminated board 20 has a large number of terminal holes 50 into which the terminal portions 18, 18, ... Of the upper pin contact 10 are respectively inserted in two rows (directions perpendicular to the plane of the drawing). Terminal holes 5 that are bored and into which the terminal portions 18, 18 ...
A large number of 1s are formed in two rows (directions perpendicular to the plane of the drawing).
Reference numeral 53 is an insertion hole into which the terminal portion 40 of the shroud 38 is inserted.

Therefore, as described above, the laminated substrate 2
As shown in FIG. 2, by fitting the lower end edge of 0 into the fitting groove 23 of the connector 22, the lower pin contact 1
The terminal portion 18 of 0 is a pattern (not shown) of the laminated substrate 20 from the solder 63, a connection pad portion (conductor portion) of the laminated substrate 20.
24, 24a (see FIG. 3), the connector 2 of FIG. 2 and FIG.
It is connected to the circuit pattern on the main printed circuit board 21 via the terminal 27 on the right side of 2. In addition, the terminal portion 18 of the upper pin contact 10 includes the solder 63, a pattern (not shown) of the laminated substrate 20, the connection pad portions 25 and 25a, and
And a terminal 27 on the left side of the connector 22 of FIG. 3 to connect to a circuit pattern (not shown) on the main printed board 21.

Next, the operation of the connector according to the first embodiment of the present invention will be described. When the lower end edge of the laminated board 20 is fitted into the fitting groove 23 of the connector 22 from the state of FIG. 3, the pair of terminals 27, 2 is caused by the lower end edge of the laminated board 20.
The contact pieces 27g, 27g of 7 are the first bent portion 27.
c, the 1st elastic piece 27d, the 2nd bending part 27e, the 2nd elastic piece 27f, etc. bend to the left and right, and are spread. The contact piece 27g is in light contact with the laminated substrate 20 at the initial stage of fitting. Then, when the fitting of the laminated substrate 20 is completed, as shown in FIG. 2, the contact portion 27h becomes the extension portion 27b.
It is elastically contacted with (on the side of the terminal portion 27a). In this way, the signal line path of the terminal 27 has the contact portion 27h and the extension portion 2
7b (the terminal portion 27a side) is short-circuited at the contact portion, and the connection pad portion 24 or 24a of the laminated substrate 20 and the contact piece 2 are connected.
7g second elastic piece from the point of contact with 27f, a path reaching the second bent portion 27e and the contact portions 27h and the extension portion 27b (the terminal portion 27a side) via the terminal unit 2 7a,. In addition, since the length of the flexible portion such as the second elastic piece 27f is sufficiently long, the connection pad portion 24 or 24a and the contact piece 27g are brought into contact with each other when the laminated board 20 of FIG. 2 is completely fitted. A sufficient contact pressure can be obtained at the portion and the contact portion between the contact portion 27h and the extension portion 27b (on the side of the terminal portion 27a). The conductor portion of the laminated board (printed board) may be brought into contact with the second elastic piece 27f. Further, the printed board may be a single-layer board instead of the laminated board.

In the first embodiment as described above, the laminated substrate 20 provided in the IC card connector device.
When the pad is inserted into the case 26, the connection pad portions (conductor portions) 24 and 24a provided on the laminated substrate 20 are contact pieces 27g.
Since the contact portion 27h elastically presses the contact portion 27h on the side of the terminal portion 27a of the extension portion 27b, the signal line path of the terminal 27 has a connection pad portion (conductor portion) 2 of the laminated substrate 20.
Since the contact point between 4, 24a and the contact piece 27g reaches the terminal section 27a via the short-circuit point, the signal line length can be greatly shortened, and the level of attenuation, delay, etc. of the transmission signal becomes extremely small, and there is no problem. Further, it is possible to reduce the ground bounce, and the contact piece 27g makes a light contact with the connection pad portions (conductor portions) 24, 24a of the laminated substrate 20 at the initial stage of fitting, and provides a sufficient contact pressure at the completion of the fitting. can get.

Next, a second embodiment of the present invention will be described. FIG. 4 is an explanatory diagram showing the second embodiment of the present invention. The same parts as those of the first embodiment are not shown in FIG. 4, but they are described using the same reference numerals.

The second embodiment will be described with reference to the points different from the first embodiment, and the second bent portion 27 will be described.
The terminal portion 27a side of the extension portion 27b is flattened to the second bent portion 27f side by eliminating the protruding portion (first embodiment) that is elastically pressed with the terminal portion 27a side of the extension portion 27b formed near f. The stepped portion 27j is projected. Therefore, the operation of the second embodiment is also the same as that of the first embodiment, except that when the fitting of the lower end edge of the laminated substrate 20 is completed, the second bending is performed on the stepped portion 27j. Part 27f
(Or the lower part of the first elastic piece 27d) is elastically contacted. In this way, the signal line path of the terminal 27 is short-circuited at the contact portion between the second bent portion 27f (or the lower portion of the first elastic piece 27d) and the stepped portion 27j. In the second embodiment as well, similar to the first embodiment, a sufficient contact pressure can be obtained, and when the fitting of the laminated substrate 20 is completed, the terminals of the second bent portion can be obtained. The portion side (or the lower portion of the first elastic piece 27d) is in contact with the stepped portion 27j. Therefore, also in the second embodiment, the same operational effect as that of the first embodiment can be obtained.

[0021]

[0022]

[0023]

Even in the second embodiment,
As described above, the plurality of terminals 27 are mounted in the case 26 in one row or two rows.

[0025]

Effects of the Invention According to the invention of claim 1 or 2, wherein, flop
When the printed circuit board is inserted in the case, the printed circuit board
The body portion contacts the contact piece, and the first bent portion and
The first elastic piece, the second bent portion, and the second elastic piece are
Elastically deformed and a part of the second bent portion is a terminal portion of the extension portion
Contact by pressing the signal line path from the contact piece to the second
Elastic piece, second bent portion, and second bent portion
The path to the extension through the contact area between a part of
Therefore, the signal path is short-circuited at the contact part between the contact part and the extension part.
As a result, the signal line length can be greatly shortened, and the level of attenuation, delay, etc. of the transmission signal becomes extremely small, and there is no hindrance.
Moreover, the length of the flexible portion such as the second elastic piece is sufficiently long.
As a result, a sufficient contact pressure can be obtained at the contact part, so ground bounce can be reduced, and a light contact is made at the beginning of mating with the conductor part of the printed circuit board, and a sufficient contact pressure can be obtained at the completion of mating. To be

[Brief description of drawings]

FIG. 1 is a plan view showing an entire IC card connector device according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an essential part of the IC card connector device shown in FIG.

FIG. 3 is an explanatory diagram of a connector.

FIG. 4 is an explanatory diagram showing a connector according to a second embodiment.

5A and 5B are explanatory views showing separate terminals used in a connector for a conventional IC card connector device.

[Explanation of symbols]

20 Laminated board 22 connector 23 Mating groove 24, 24a Connection pad part 26 cases 27 terminals 27a Terminal part 27b extension 27c First bent portion 27d First elastic piece 27e Second bent portion 27f Second elastic piece 27g contact piece 27h contact part 27j Stepped portion

Claims (2)

(57) [Claims] 1. A terminal portion, an extension portion extending from one end of the terminal portion, and a U-shaped first portion provided at an end portion of the extension portion.
Bending portion, a first elastic piece extending from one end of the first bending portion so as to face the extension portion, and a U-shaped second bending portion provided at an end portion of the first elastic piece. Department,
A terminal including a second elastic piece extending from one end of the second bent portion so as to face the first elastic piece, and a contact piece formed at a tip end of the second elastic piece; And an insulating case to be attached, wherein the extension part is provided on the extension part side of the second bent part.
Is provided with a contact portion for contacting a, when the printed circuit board in the IC card connector device is inserted into the case, together with the conductor portion of the printed circuit board is in contact with the contact piece, the contact portion is the extension is elastic contact in part to a short circuit between the extended portion and the contact portion
And a part of the second elastic piece is located at the end of the extension.
A connector for an IC card connector device, characterized in that the child part side is elastically pressed. In 2. The state in which the two contact pieces opposed, IC card connector connector device of claim 1, wherein the attached to the case.