JP2827767B2 - Memory card connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card connector for connecting a plurality of memory cards (hereinafter simply referred to as "cards") whose both surfaces are covered with a shielding metal plate and a circuit board at once. In particular, the present invention relates to a card connector in which a measure against static electricity of each card is ensured to improve productivity.

[0002]

2. Description of the Related Art FIG. 3 is a diagram conceptually illustrating a card connector, FIG. 4 is a diagram illustrating a configuration example of a conventional multiple card connector, and FIG. 5 is a diagram illustrating a problem.

In FIG. 3A, a plurality of information input / output jack terminals 11 are arranged on an edge 1a in an arrangement based on a standard established by the Japan Industrial Promotion Association (JEIDA). The card 1 is a circuit board connected to each jack terminal 11
A semiconductor device 13 such as a plurality of ICs is mounted on both surfaces of the semiconductor device 12 and both outer surfaces thereof are covered with a shielding metal plate 14, and a lead wire 15 or the like is provided between the two metal plates 14. Conducted.

[0004] A memory card connector (hereinafter simply referred to as a connector) 2 to which the card 1 is removably mounted includes:
It comprises a connector body 21 and a card guide 22 that can be mounted and fixed to the body 21.

The inner connector main body 21 is provided with an insulator 211 having a substantially gate shape in a plan view and a jack terminal of each of the cards when the groove 211a inside the two legs is inserted as a guide into a central connecting portion excluding the both legs. 11 and plug terminals 212 implanted so as to be fitted. The other end of each plug terminal 212 after being bent at a right angle is connected to the circuit board 3 indicated by a dashed line A. It is a terminal 212a.

On the other hand, the insulator 211 is fitted in a groove 211b formed along the longitudinal direction on the outside of both legs of the insulator 211, and
The card guide 22 attached and fixed to the connector body 21 guides the card 1 on both sides in the width direction inside a frame 221b formed so as to protrude in the thickness direction on both sides in the width direction of the bottom surface 221a. An insulator 221 having a guide groove 221c which can be inserted, a shield plate 222 mounted on the insulator 221 so as to be able to move on the bottom surface 221a in the insertion direction of the card 1; Frame frame
One side of the frame 221b is provided with a card removal rod 223 which is engaged with and mounted on the frame 221b, and a thickness direction through hole 221d 'formed on the insulator 221 so as to protrude outside both frame frames. A ground terminal 224 having a mounting hole 224a mounted on the block-shaped projection 221d and short-circuiting the shield plate 222 to the ground pattern on the back side of the circuit board 3 described above.
It consists of

[0007] The insulator 221 and the insulator 211 are connected to a hook arm 221e formed at the end of each frame 221b of the insulator 221 in the card insertion direction.
By fitting the two in the groove 211b, the two can be integrated.

Further, when the card 1 is inserted into the above-described guide groove 221c of the integrated insulator to a predetermined position by, for example, a manual operation, the jack terminal side edge 1a of the card 1 is located at the innermost side of the shield plate 222. The shield plate 222 is moved to a predetermined position by pressing an angle piece 222a formed in the portion, and the card removal rod 223 described above is moved by a thin plate-like lever mechanism (not shown) mounted on the back side of the shield plate 222. It is configured to jump out as shown by a broken line B.

Therefore, when the card removal rod 223 at the position of the dashed line B is manually pressed to the state shown by the solid line in the drawing, the card 1 mounted at the predetermined position is pushed out by the angle piece 222a, and the card 1 is removed. It can be removed from the integrated insulator.

The card 1 is provided with the above-described guide groove 221c.
In the region (2), the shielding metal plate 14 mounted on the surface slides while being in contact with two pillow-shaped protrusions 222b formed so as to protrude from the surface along the surface longitudinal direction of the shield plate 222. Therefore, for example, by short-circuiting the shield plate 222 to the ground potential, it is possible to take a countermeasure against static electricity as the card 1.

On the other hand, the ground terminal 224 is an enlarged view of the drawing.
As shown in (b), a tongue piece 224b is formed on one side in a U-shape when viewed from the side, and a tongue piece 224b further protruding from the piece is formed. Since the tip of the tongue piece 224b is in contact with the back surface of the shield plate 222 when it is mounted so as to be sandwiched between the block-shaped projections 221d having the through holes 221d ', the mounting holes 224a and the through holes 221d are provided. The card 1 can be short-circuited to the ground potential via the shield plate 222 by fixing the ground terminal 224 together with the insulator 221 to the circuit board 3 by a screw or the like passing through the '.

Therefore, the connector body 21 is mounted on a circuit board 3 having a through-hole (not shown) connected to the conductor pattern at a position corresponding to the connection terminal 212a of each plug terminal 212, and both are mounted by means such as soldering. After connecting the card guide 22, the card guide 22 is attached to the main body 21 by the above-described method, and the card guide 22 is screwed to the circuit board 3 at the ground terminal 224, so that the card 1 has a measure against static electricity. The connector 2 can be configured to be detachable while being detached.

However, as the degree of integration of various devices such as ICs on the circuit board 3 is increased and the amount of information to be exchanged is increased, customer demands for increasing the number of cards to be attached to and detached from the circuit board and thus to the connector are increasing. Connectors capable of attaching and detaching a plurality of cards have come into practical use.

In this case, in order to immediately respond to various customer requirements regarding the number of cards, it is desirable to divert a conventional connector member as much as possible from the viewpoint of productivity. FIG. 4 shows an example of the connector configuration when the number of cards is two. FIG.
Since the card guide 22 has substantially the same configuration as that of the card guide 22 described above and has only a guide projection and a guide hole formed in a part thereof so that the two card guides can be positioned relative to each other, FIG. The same target members and parts are denoted by the same reference numerals, and overlapping descriptions are omitted.

In FIG. 4, the connector 4 comprises a connector main body 41 and a card guide completion 42 which can be mounted and fixed to the main body 41. The connector body 41 composed of the inner insulator 411 and two types of plug terminals 412 and 413 differing only in the length from the right-angled bent portion to each tip is the connector body 21 described in FIG.
Are stacked in the thickness direction, the leading end of each plug terminal 412, 413 connected to the card 1 is kept at a line interval equal to the thickness of the card guide 22 described in FIG. The grooves 211a and 211b described with reference to FIG. 3 are also formed in parallel with each other at two intervals at the thickness of the card guide 22.

On the other hand, the card guide completion 42 attached to the connector main body 41 is provided at the position corresponding to the surface of the frame of the card guide 22 described with reference to FIG.
And a guide hole 431b fitted in the insulator 431, which is additionally processed, a shield plate 222 of FIG. 3 movable with respect to the insulator 431, and a ground terminal 224 described with reference to FIG. The two guides 421 are connected to the guide projections 4 so that the respective shield plates 222 face each other.
The card guide completion 42 shown can be formed by positioning and joining the guide hole 31a and the guide hole 431b.

Therefore, each of the hook arms 221e of the card guide completion 42 is inserted and fitted into each of the grooves 211b of the connector main body 41 to form a required connector 4. It should be noted that a circuit board (not shown) can be fixed with a screw or the like as in FIG. 3 via a ground terminal 224 mounted on the block-shaped projection 221d.

In order to complete the card guide, at least the connector 4 uses the card guide 431 which can become the conventional card guide 22 only by cutting off the above-mentioned guide protrusion 431a. Therefore, one or two cards 1 are used. The connector can be used in common and can respond to customer requirements immediately.

Even when there are three or more cards,
A state in which the tongue piece 224b of the ground terminal 224 of each card guide 431 is brought into contact with either the front or back of the shielding metal plate 14 of each card 1 via the shield plate 222 by simply cutting off the guide protrusion 431a as necessary. Thus, there is an advantage that the customer's request can be immediately responded only by preparing the connector body corresponding to the number of cards and the card guide 431 of the number corresponding to the number of cards.

[0020]

FIG. 5 is an enlarged view of a ground terminal portion. FIG. 5A shows a state where the ground terminal is mounted, and FIG. 5B is a cross-sectional view showing a state where the ground terminal is mounted on a circuit board. It is shown by.

That is, in the connector 4 described with reference to FIG.
The size of each bent portion of the ground terminal 224 does not necessarily match the shape and size of the block-shaped protrusion 221d of the insulator 221.
After attaching the ground terminal 224, tighten the screw as shown in (5-2).
After being fixed to the circuit board 3 by means such as screwing by 31, for example, adjacent ground terminals 224 ₋₁ , 224 to be contacted
_{In some} cases, a gap as shown in FIG. Δ occurs between _{−2 and −2,} or rattling occurs, leading to an unstable contact state.

[0022] This is a ground terminal 224 _-2 itself from that short circuit to the ground potential is unstable in the card 1 via the tongues 224b and the shield plate 222 for shielding the metal plate 14
Indicates an incomplete short circuit to ground potential.

Accordingly, there has been a problem that it is impossible to secure the countermeasures against static electricity as the card 1. Furthermore, card 1
When the connector is configured as a detachable connector of three or more, the ground terminal located on the intermediate layer where the card guide is completed 2
24 is completely free, and the card 1 connected to the tongue piece 224b cannot take countermeasures against static electricity.

[0024]

SUMMARY OF THE INVENTION The object of the present invention is to provide a connector in which plug terminals are implanted so as to be connectable to one or a plurality of parallel memory cards, both surfaces of which are shielded by a metal plate conducting to each other. One or a plurality of stackable units each including a main body and a ground terminal for preventing static electricity with respect to the memory card can be inserted and removed by guiding one memory card at a predetermined position of the connector main body. A memory card connector of a circuit board mounted type comprising a memory card guide, wherein the ground terminal attached to each memory card guide with a tongue on one side end in a U-shape in side view, Positioning means for the insulator to which the ground terminal is attached and fixing means for the circuit board, and when the memory card guide is stacked up or down Others are achieved by a universal mechanical engagement means and the memory card connector that is configured comprises a detachable between the ground terminal adjacent to each other in both.

[0025]

When the card guide is completed by mounting ground terminals formed so as to be able to be mechanically connected to each other, electrical conduction between the ground terminals can be obtained even when a plurality of card guides are stacked. Therefore, static electricity countermeasures for all cards can be ensured.

Therefore, according to the present invention, a half width groove is formed at each bent portion of the conventional ground terminal, and the grooves are engaged with each other to ensure conduction between adjacent ground terminals. I have to.

This means that a connector that can be detached from any number of cards in a state where the countermeasures against static electricity are taken can be constituted by one kind of card guide.
Therefore, it is possible to easily configure a connector that can be attached and detached while ensuring a certain electrostatic countermeasure for any number of cards.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view for explaining an example of the configuration of a main part of a connector in the case of two cards, where (1-1) shows an attached state of a ground terminal and (1-2) shows an attached state to a circuit board. The state at that time is shown in a sectional view.

FIG. 2 is a diagram showing an example of an embodiment when three cards are used. Note that, in the drawings, the connectors having the same configuration as those in FIG. 4 are taken as an example, and therefore the same target members and portions as those in FIG. 4 are denoted by the same symbols.

FIG. 1 (1-1) shows only the main part according to the present invention in the same manner as in FIG. 5 and shows the connector 5 according to the present invention. 4 has a card guide completion 51 that can be attached to the main body 41 with the same configuration as the card guide completion 42.

In this case, the card guide is completed 51
The block-shaped projection 221d is formed to protrude outside the frame 221b of the insulator 221 described with reference to FIG.
Insulator 511 additionally formed with recessed holes 511a at two predetermined positions around through holes 221d 'on both sides in the thickness direction, a shield plate 222 of FIG. 3 movable with respect to the insulator 511 and a ground according to the present invention. Two card guides 513 including the terminals 512 are combined so that the respective shield plates 222 face each other.

In particular, the ground terminal 512 in this case
As shown in the enlarged view (c) in the circle, a slot groove 512a having a length of about 1/2 of the width w is formed at each right-angled bent portion of the ground terminal 224 described with reference to FIG. And the ground terminal 512 is connected to the insulator 51.
The concave hole 511a when attached to the block-shaped projection 221d of FIG.
In a position corresponding to the above, a projection piece 512b of a size fitted into the concave hole 511a and positioned as the ground terminal 512.
Are formed.

A cut-and-raised piece 512c slightly protruding inward is provided in the center area in the width direction of the ground terminal 512 near each groove. When the required connector 5 is constructed using the ground terminals 512, the two ground terminals 512 are arranged so that the tongue pieces 224b face each other as shown in the figure.
Are engaged with each other in the respective slits 512a, and then the block-like projections of the two insulators 511 combined so that the respective shield plates 222 face each other.
Attach it to the area of 221d as shown by the arrow C.
As shown in (1-2), the relative positioning of the two insulators 511 and the shield plate 222 and thus the shielding of the card 1 are made by fitting the second protrusion 512b into the concave hole 511a of each insulator 511. A card guide completion 51 that can simultaneously realize electrical conduction with the metal plate 14 can be configured.

The above-described cut-and-raised piece 512c can be opened by engaging the other cut-and-raised piece when the two ground terminals 512 are engaged with each other by the respective slits 512a. This is for suppressing separation.

In the case of a connector for attaching and detaching one card 1 as described with reference to FIG. 3, the card guide 22 used for the connector 2 in FIG.
The same effect can be obtained simply by replacing

FIG. 2 shows an example of a connector in which up to three cards 1 can be attached and detached. That is, in FIG. 2, the connector 6 to which the three cards 1 can be attached and detached comprises a connector main body 61 having plug terminals corresponding to the three cards, and the main body 61.
And a card guide 62 that can be fixed to the card guide.

Three types of plug terminals 612, 613, 61 differing only in the length from the inner insulator 611 to the respective ends from the right-angled bent portion.
Since the connector main body 61 composed of 4 is formed by stacking the three connector main bodies 21 described in FIG. 3 in the thickness direction, the front ends of the plug terminals 612 to 614 connecting to the card 1 are connected. The parts are arranged with a line interval equal to the thickness of the card guide 22 described in FIG.
The grooves 211a and 211b described in (1) are also formed in parallel at three intervals at the thickness of the card guide 22.

On the other hand, the completed card guide 62 attached to the connector main body 61 has three card guides 513 described in FIG. 1 in the same manner as in FIG. 1 (513 _-1 , 513 _-2 , 513 _{-3 in the} figure). It is constructed by stacking.

Therefore, the required connector 6 can be formed by inserting and fitting each hook arm 221e of the card guide completion 62 into each groove 211b of the connector main body 61.
In such a connector 6, the card guide located on the middle layer
513 _-2 ground terminal 512 _-3 ground terminal 512 _-2 mounted is positioned above and below, the reliable conduction respectively since mechanically engaged as described in 512 _-1 and 1 There will have been positioned in the respective projecting pieces 512b also between each corresponding insulator with is ensured, resulting in each card 1 is detachably attached to the card guide 513 _-1 to 513 _-3 Electrical continuity with the shielding metal plate 14 is obtained, so that measures against static electricity as a card can be secured.

[0040]

As described above, according to the present invention, the detachable 1
It is possible to provide a memory card connector in which the measures for static electricity of one or a plurality of memory cards are ensured and the productivity is improved.

Although the description of the present invention has been made up to the case where the number of memory cards is three, it is apparent that the connector can be constructed in the same manner even when the number of memory cards is four or more. Also, in the description of the present invention, the case where the connector body is formed corresponding to the number of memory cards to be detached is exemplified,
The same effect can be obtained even if the connector main bodies in which different types of plug terminals are implanted in correspondence with the number of memory cards are stacked such that the card guide is completed.

[Brief description of the drawings]

FIG. 1 is a view for explaining an example of a configuration of a main part of a connector when two cards are used.

FIG. 2 is a diagram showing an example of an embodiment when three cards are used.

FIG. 3 is a diagram conceptually illustrating a card connector.

FIG. 4 is a diagram showing a configuration example of a conventional multiple card connector.

FIG. 5 illustrates a problem.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Memory card 3 Circuit board 5,6 Connector for memory card 51,62 Completion of memory card guide 61 Connector body 211a, 211b Groove 221d 'Through hole 221e Hook arm 222 Shield plate 224a Mounting hole 224b Tongue piece 511,611 Insulator 511a Concave hole 511b Mounting holes 512, 512 _-1 to 512 _-3 Ground terminal 512a Slot groove 512b Projection piece 512c Cut-up piece 513, 513 _-1 to 513 _-3 Memory card guide 612 to 614 Plug terminal

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenjiro Taniuchi 1015 Uedanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Inside Fujitsu Limited (72) Inventor Hideo Miyazawa 1015 Kamikodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fujitsu Limited ( 56) References JP-A-5-135229 (JP, A) JP-A-3-79174 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G06K 17/00 H01R 13/648 H01R 23/68 302 H01R 13/629

Claims (4)

(57) [Claims] 1. A connector body in which plug terminals are implanted so as to be connectable to one or a plurality of parallel memory cards, both sides of which are shielded by conductive metal plates, and a predetermined portion of the connector body. One or a plurality of stackable memory card guides which can be inserted and removed by guiding one of the memory cards to the position and which are provided with a ground terminal for preventing static electricity to the memory card. A connector for a memory card mounted on a circuit board, wherein the ground terminal has a U-shape in a side view and has a tongue piece (224b) on one end piece and is attached to each memory card guide (513).
(512) is the insulator (51) to which the ground terminal (512) is attached.
(1) positioning means for fixing to the circuit board (3), and a machine detachable between the memory card guide (513) and an adjacent ground terminal (512) above and / or below when the memory card guide (513) is stacked. A memory card connector comprising: a first engaging means; 2. The method according to claim 1, wherein the positioning means for the insulator (511) provided on the ground terminal (512) corresponds to a projection piece (512b) provided on the tongue piece forming surface of the ground terminal (512). A memory card connector comprising a concave hole (511a) on an insulator. 3. A fixing means for fixing to a circuit board (3) provided on the ground terminal (512) according to claim 1;
(512) and a through-hole (221d ') on the insulator corresponding to the mounting hole (224a). 4. A detachable mechanical engagement means provided between adjacent ground terminals provided on the ground terminal (512) according to claim 1 is provided from two end sides to the center in the width direction in opposite directions along two bent portions. It is characterized by being constituted by a formed slit groove (512a) and a cut-and-raised piece (512c) having a height not exceeding the plate thickness formed in the width direction central region near the slit groove. Memory card connector.