JP3298327B2 - Circuit board connector and memory card - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a connector for connecting a circuit board having a ground terminal and a configuration of a memory card using the connector, and more particularly, to facilitate the positioning of the board when the circuit board is connected to the connector. The present invention relates to a circuit board connector and a memory card, which simultaneously realize the short circuit and the grounding shortage as a memory card to improve productivity by facilitating assembly.

[0002] With the development of electronic technology, memory cards which can be attached to and detached from these terminal devices and the device main body are becoming widespread as one means for exchanging information between the terminal device and the device main body.

[0003] In this case, a circuit board on which a plurality of semiconductor devices such as memories and electronic devices are mounted and a circuit board arranged in the memory card is required to be attached to and detached from the terminal equipment or the apparatus main body. A connector for connection (hereinafter simply referred to as a connector) is used. However, it requires a lot of man-hours to assemble the memory card and special parts are required for ground connection of the memory card surface plate. How to improve the performance is a major issue.

[0004]

2. Description of the Related Art FIG. 6 is a view for explaining a conventional connector together with the structure of a memory card. (6-1) shows a structure as a memory card, and (6-2) shows a main part of the connector according to the present invention. That is, the broken line area in the figure is viewed from the direction of arrow A.

FIG. 7 is a diagram for explaining a problem. In (6-1) of FIG. 6, the memory card 1 includes a connector 11, a circuit board 12 connected to the connector 11 in a state where a plurality of semiconductor devices such as memories and electronic devices are mounted, and a connection integrated. A housing 13 for positioning and holding the connector 11 and the circuit board 12, shield plates 14 _-1 and 14 _-2 fixed on both sides in the thickness direction of the housing 13 by means such as adhesion, and the circuit board 12
The circuit board 12 and two shield plates
A plurality (four in the case of the figure) of coil springs 15 for ground connection that conducts between 14 _-1 and 14 _-2 and short-circuits to ground potential.
It is composed of

The inner connector 11 is a jack contact (not shown) that can be fitted at one end to the plug terminal connected to the terminal equipment or the apparatus main body described above, and the other end is connected to a tongue-shaped contact lead 111a indicated by (6-2). A plurality of jack terminals 111 are formed, and each of the terminals 111 is connected to the contact lead 111.
and an insulator 112 formed so as to be held and fixed in an area other than the area a in accordance with a standard such as the Japan Electronic Industry Promotion Association (JEIDA). The connector 11 shown can be assembled by inserting and positioning it in the body 112 and holding and fixing it.

[0007] Also, in FIG.
At the connection portion with the pad 11, a pad electrode 121 connected to a circuit (not shown) on the substrate is pattern-formed at each position corresponding to each contact lead 111a.

On the other hand, a casing 13 having a U-shape in plan view is positioned by fitting protrusions 112a projecting in the longitudinal direction at both ends in the longitudinal direction of the insulator 112 inside the vicinity of the opening end. And a protrusion 13a for holding the circuit board 12 at a plurality of locations around the peripheral wall.
13b, the connector 11 and the circuit board 12 which are connected and integrated
13b and can be positioned and held together.

The above-described coil spring for ground connection
Reference numeral 15 denotes a ground pattern formed by connecting each intermediate region at a plurality of locations (four locations in the figure) near the periphery of the circuit board 12 as shown in the enlarged view (a) in the circle. By inserting the circuit board 12 into the semi-oval concave hole 12a as shown by the arrow B, the circuit board 12 can be held by the board 12 in a state of being short-circuited to the ground potential.

Then, the circuit board 12 is inserted into the contact lead 111a of the connector 11 as shown by the arrow C in FIG.
Each contact lead 111a and its corresponding pad electrode
After the solder connection with the coil spring 121, the connector is held in a state where the coil spring 15 is held in each half-elliptical concave hole 12a of the circuit board 12.
And 11 and the circuit board 12 made to position and hold to the casing 13, further the two shield plates 14 _-1, 14 _-2 to configure the required memory card 1 is fixed to the housing 13 I have to.

In the memory card having such a configuration, the integrated connector and the circuit board can be attached to and detached from the housing simply by removing the shield plate, so that there is an advantage that the memory card can be easily changed to a memory card having any characteristics. .

[0012]

However, demands for miniaturization and smaller pitch of contact leads have been demanded by customers' demands for miniaturization as memory cards and demands for increasing the number of terminals accompanying expansion of applications.

FIG. 7A is a diagram showing the connector 11 and the circuit board 12 before integration as in FIG. 6B, and FIG. 7B is a diagram showing a defective state. When the circuit board 12 is inserted into the contact lead 111a side of the connector 11 as shown by an arrow C in FIG. 7A, the positional displacement between the contact lead 111a and the pad electrode 121 of the circuit board 12 is made as shown in FIG. May occur.

The positional deviation in this case makes it easier to induce a short circuit between the adjacent leads as the width w of the contact lead 111a becomes smaller and the pitch p becomes smaller. Therefore, in the connector having the conventional configuration, a large number of man-hours have to be spent on the alignment of the two so as to be integrated with the circuit board, and the productivity cannot be expected to be improved in terms of man-hours. was there. Also, when assembling as a memory card, a coil spring for short-circuiting the ground between the circuit board and the shield plate
There was a problem that it had to be installed 15 and it took a lot of time.

[0015]

The object of the present invention is to provide a circuit board in which a jack terminal having one end having a contact lead connected to an electrode aligned with an edge of the circuit board is implanted in an insulator. A connection connector, wherein a state in which a chevron that can be displaced in an opening direction by contact with the circuit board surface is provided near a longitudinal end portion of a contact lead protruding surface of the insulator outside a contact lead arrangement area. A positioning ground terminal integrally formed with a pair of first tongues facing each other and a second tongue that can define the width direction position of the circuit board by contact with the side of the electrode formation area of the circuit board; It is solved by the connector for circuit board connection respectively implanted.

A circuit board connected to the connector;
A U-shaped housing in plan view for positioning and holding the integrated connector and circuit board so that the connector can be connected to an external device with the projection provided on the connector and the periphery of the circuit board; A memory card including at least a shield plate mounted on both sides of a body, wherein a jack terminal having one end of a contact lead connected to an electrode arranged in alignment with an edge of the circuit board is provided in an area excluding the contact lead. The connector implanted on the insulator before the connection of the circuit board is placed in the separating direction by contact with the circuit board surface in the vicinity of both ends in the longitudinal direction outside the contact lead arrangement area of the contact lead protruding surface of the insulator. The widthwise position of the circuit board is defined by the contact between the pair of first tongue pieces facing each other with the angled projection which can be displaced and contact the shield plate and the side of the circuit board on which the electrode is formed. And a positioning tongue terminal formed by bending the second tongue so as to have a “U” shape when viewed from the front end. The "U" shape is implanted so as to face each other while maintaining a contactable interval, and the circuit board before being connected to the connector is provided in an area where the first tongue piece of the connector is in contact with the circuit board. This is achieved by a memory card formed with a ground pattern connected to a circuit on the circuit board.

[0017]

When a grounding terminal having a tongue for positioning the circuit board and a tongue for short-circuiting between the shield plates is added to the end face of the connector on the contact lead side, the circuit board positioning and the short-circuit between the shield plates are simultaneously realized. be able to.

Therefore, according to the present invention, two opposing first tongue pieces and one second tongue piece are integrally formed so as to form a "U" shape when viewed from each tip. The positioning ground terminal is added to the vicinity of both ends in the longitudinal direction of the contact lead side end face of the connector so that the second tongue piece faces the connector to constitute the connector.

This means that the positioning of the circuit board is realized by arranging the two positioning ground terminals on the connector such that the distance between the second tongues for positioning the circuit board corresponds to the width of the circuit board. In addition, it is shown that the short-circuit between the shield plates can be achieved by associating the first tongue piece spacing for short-circuiting between the shield plates with the shield plate spacing.

Therefore, the positioning of the circuit board with respect to the connector and the short circuit between the shield plates can be simultaneously realized without using the coil spring used in FIG.
An improvement in productivity can be expected.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view for explaining a connector according to the present invention, focusing on a main part.
2) is a view of the assembled state as viewed from the direction of arrow D, and (1-3) is a view of the assembled state as viewed from the direction of arrow E.

FIG. 2 is a view for explaining a process of integrating the connector and the circuit board of the present invention, FIG. 3 is a view for explaining an example of forming a positioning ground terminal for realizing the present invention, and FIG. 4 is a structural example of a memory card. FIG. 5 is a diagram illustrating another configuration example of the memory card.

In the drawings, the case where the present invention is applied to the memory card described with reference to FIG. 6 is taken as an example. Therefore, the same symbols are given to the same target members and parts as in FIG. 6, and the duplicated description is omitted. .

FIG. 1 (1-1) shows the connector 2 according to the present invention.
Is a plurality of jack terminals 111 described in FIG. 6, an insulator 21 for holding and fixing each of the terminals 111 in a predetermined arrangement as described in FIG. 6, and two positioning members for realizing the present invention. And a ground terminal 22.

In this case, the length of the insulator 21 except for the protrusion 112a of the insulator 112 in FIG. 6 is set to a height not exceeding the height of the protrusion (shown as a hatched area F in the figure) on both sides. A grounding terminal fixing hole 21a is formed in the extension area of the extension area so that the positioning grounding terminal 22 can be fixed by inserting a projection 22d described later.

The positioning grounding terminal 22 has a "U" shape when the two first tongue pieces 22a- ₁ and 22a- ₂ facing each other and one second tongue piece 22b are viewed from each tip. Connecting piece 22
The connecting piece 22c is provided with a projection 22d fixed on the center line of the insulator 21 by inserting the insulator 21 into the hole 21a for mounting and fixing the positioning ground terminal to the connecting piece 22c. Is formed.

The first tongue pieces 22a- ₁ and 22a- ₂ having different lengths for facilitating the mounting of the circuit board 12 in FIG. 6 are both extracted in a circle (a). to which is temporarily formed inner or bent chevron projecting outwardly after being flexed toward each other from the respective base, as shown, closest spacing a ₁ in early normal at least the circuit of FIG. 6 Smaller than the thickness of the substrate 12
a ₂ is set to a thickness near the shield plate spacing or enclosure 13 in FIG.

The tip area of the second tongue piece 22b is connected to the above-mentioned circuit.
Bent outward to facilitate mounting of the substrate 12
I have. Therefore, the projections 22 of each of the two positioning ground terminals 22 are provided.
d to arrow G₁, G_TwoFix each ground terminal of the insulator 21 as shown above
When inserted into the hole 21a and fixed, the first tongue 22a_-1, 22a _-2
And the second tongue piece 22b are arranged in the connector 2 (1-2) and
And (1-3).
A second tongue facing the two positioning ground terminals 22 at a time
The piece 22b regulates the width direction position of the circuit board,
Also, the first tongue piece 22a_-1, 22a_-2Is the thickness direction of the circuit board.
Will be controlled.

In FIG. 2 showing the process of connecting the circuit board to the connector of FIG. 1, (2-1) shows the separated state before connection and (2--2)
2) shows the state during connection, and (2-3) shows the state after connection.

The connector 2 described in FIG.
6 is the same as the circuit board 12 described with reference to FIG. 6, except that a ground pattern 25a connected to a ground circuit is added near the width side both sides 25b of each pad electrode 121 placement area. It is formed.

Then, when the circuit board 25 is brought close to the contact leads 111a of the connector 2 as shown by the arrow C, the long second tongue piece 22b of the positioning ground terminal 22 is first placed on both sides of the board 25. 25b, and its positioning in the width direction is realized, which means that each pad electrode 12
1 and the contact leads 111a of the connector 2 are aligned, and the ground pattern 25
a and the first tongue pieces 22a _-1 and 22a _-2 of the connector 2 are in contact with each other.

[0032] Thus further pushed circuit board 25, a first tongue 22a _-1 of the positioning grounding terminal 22, between 22a _-2 closest distance a ₁ is the substrate 25 as described in FIG. 1 smaller than the thickness, the pad forming surface of the substrate 25 and the tongue piece 22a _-1
22a _-2 and successively displaced outwardly.
2a _-1, 22a since peaks spacing a ₂ in the initial normal state between _-2 are set to be in the vicinity of the shield plate spacing 5 as described in FIG. 1 summit interval at this point a ₃ Exceeds the shield plate interval shown by the dashed line.

FIG. 2-2 shows the state at this time.
Then push the circuit board 25 until it stops (2-
3), the first tongue pieces 22a- ₁ and 22a- ₂
(2-2), the contact lead 111 and the pad electrode 121 are directly connected to each other by a normal soldering technique or the like, so that the connector 2 and the circuit board 25 are connected to each other. It can be integrated including ground connection.

In the integration step, since the connector 2 and the circuit board 25 can be aligned only by inserting the board 25 without having to take extra steps, the efficient integration work can be realized. Can be.

Here, a method of forming the positioning ground terminal 22 described with reference to FIGS. 1 and 2 will be described with reference to FIG. In FIG. 3 (3-1) showing the blank shape before forming the terminal, a blank 2 formed by punching and forming from a hoop material 22 ″ by a normal pressing technique or the like.
Reference numeral 2 'denotes a connecting portion 22c along the hoop material 22 ", two projections 22d projecting in one direction on one side, and a first tongue piece 22 projecting from the respective position corresponding to each projection 22d to the other.
a _-1 , 22a _-2 and a second tongue piece 22b protruding in the same direction from between the two tongue pieces 22a _-1 , 22a _-2 .

In this case, the first tongue pieces 22a _-1 and 22a _{-2 are used.}
The two first tongues 22a- ₁ and 22a- ₂ are connected to one side, for example, 22a- ₁ and the other 22a- ₂ to facilitate mounting of the circuit board 25 described above. The second tongue 22b is made shorter and longer than these first tongues.

Then, first, each of the first tongue pieces 22a _-1 and 22a _-2 is firstly set from the connecting portion 22c by a normal bending technique at each of the preset positions 〜, valley fold, mountain fold,
The valley fold is performed sequentially, and the second tongue piece 22b folds the vicinity of its tip at an appropriate angle, and further the first tongue piece 22a of the connecting portion 22c.
_-1 and the second tongue piece 22b and between the second tongue piece 22b and the first tongue piece 22b- ₂ at right angles, the required angle described in FIGS. The positioning ground terminal 22 can be obtained as shown in (4-2).

FIG. 4 illustrates the configuration of a memory card using the connector 2 of FIG. 1 as an example.
The connector 2 and the circuit board 25 described with reference to FIG. 2, a housing 31 for positioning and holding the connector 2 and the circuit board 25 after connection and integration, and bonding or the like to both sides in the thickness direction of the housing 31. Shield plates 14 _-1 and 14 _-2 fixed by means.

The housing 31 in this case is the same as the housing 13 shown in FIG.
Similarly to the above, the connector has a U-shape in plan view, and an insulator constituting the connector 2 is provided inside the vicinity of the opening-side end.
It is provided with a recess 13a that fits with the projection 112a of the groove 21 and a grooved claw 31a that can hold the periphery of the circuit board 25 in the thickness direction at substantially the center of the peripheral wall connecting portion. are those who are, after allowed inserting the tip-side edge of the circuit board 25 which is integrally connected to the connector 2 in the groove claw 31a as shown by an arrow H _1, as indicated by arrow H _2, H ₃ By dropping the protrusion 112a of the connector 2 into the recess 13a of the housing 31, the connector 2 and the circuit board 25 can be collectively positioned and held.

Therefore, the connector 2 integrated and connected
After the two shield plates 14 _-1 and 14 _-2 are fixed to the housing 31 in the same manner as in FIG. piece 22a _-1, 22a _-2 summit intervals a ₃ is respective first tongue 22a for exceeds the shield plate spacing as described in FIG. 2 _-1, 22a _-2 is each shield plate 14 _{- 1} , _14-2 , and as a result, the ground pattern 122 of the circuit board 25 and each shield plate 14 _-1 ,
The required memory card 3 having the short circuit 14 _-2 short-circuited can be constructed.

The memory card 3 having such a configuration has an advantage that the number of assembly steps can be reduced since the ground connection coil spring 15 required in the conventional memory card 1 is not required.

In FIG. 5, which shows another example of the structure of the memory card, the memory card 4 includes a connector 41, a circuit board 25, and a housing 41 for positioning and holding the connected connector 2 and the circuit board 25. , and is composed of a shield plate 14 _-1, which is fixed by means of adhesive or the like to the housing 41.

[0043] and in particular the housing 41 in this case, the housing 411 and the shield plate 412 corresponding to the shield plate plate 14 _-1 to be attached and fixed to the lower surface and the housing 31 described in FIG. 4, For example, they are integrally formed in a combined state as shown in an enlarged view (a) in a circle extracted.

[0044] Therefore, after setting the casing 41 as in FIG. 4 as well as the arrow H ₁ to H ₃ and connected integral connector 2 and the circuit board 25, mounted shield plate 14 _-1 By fixing, the ground pattern 12 of the circuit board 25 is fixed as in FIG.
2 and the shield plate 14 _-1, can be a _14-2 constitute the required memory card 4 which is short-circuited.

It is to be noted that the same configuration can be obtained by replacing the jack connector described above with a plug connector. The memory card 4 having such a configuration has an advantage that it can be more efficiently assembled than the memory card 3 of FIG.

[0046]

As described above, according to the present invention, it is possible to improve the productivity by facilitating the assembly by simultaneously simplifying the positioning when connecting the circuit board to the connector and ensuring the ground short-circuit as the memory card. A connector for connection and a memory card can be provided.

In the description of the present invention, the pad electrodes 121 of the circuit board are provided on both sides of the board, and the contact leads 111 are connected by soldering on both sides of the board.
It is apparent that the same effect can be obtained even when the pad electrode 121 is arranged on one side of the substrate and the contact lead 111 is connected on one side of the substrate.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a connector according to the present invention, focusing on a main part.

FIG. 2 is a diagram illustrating a process of integrating a connector and a circuit board according to the present invention.

FIG. 3 is a diagram illustrating an example of forming a positioning ground terminal for realizing the present invention.

FIG. 4 illustrates a configuration example of a memory card.

FIG. 5 illustrates another configuration example of a memory card.

FIG. 6 is a diagram illustrating a conventional connector together with the configuration of a memory card.

FIG. 7 illustrates a problem.

[Explanation of symbols]

2 circuit board connector 3,4 memory card 13a indentations 14 _-1, 14 _-2, 412 shield plate 21 insulating member 21a grounded terminal fixing hole 22 "hoop material 22 'the blank 22 positioned ground terminal 22a, _22a-1, 22a _-2
First tongue piece 22b Second tongue piece 22c Connecting piece 22d Projection 25 Circuit board 25a Ground pattern 25b Side 31,41,411 Housing 31a Groove claw 111 Jack terminal 111a Contact lead 112a Projection 121 Electrode (pad electrode)

Continuation of the front page (56) References JP-A-7-312243 (JP, A) JP-A-7-225820 (JP, A) JP-A-3-38394 (JP, A) JP-A-7-312270 (JP) JP-A-57-13674 (JP, A) JP-A-3-9065 (JP, U) JP-A-6-73883 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB Name) H01R 12/04 G06K 17/00 H01R 12/20 H01R 31/06

Claims (2)

(57) [Claims] 1. A circuit board connection connector, wherein a jack terminal having one end having a contact lead connected to an electrode arranged in alignment with an edge of a circuit board is implanted in an insulator. A pair of first faces facing each other with a chevron that can be displaced in the opening direction by contact with the circuit board surface near the longitudinal ends of the contact lead protruding surface of the insulator outside the contact lead arrangement area. Positioning ground terminals are integrally implanted with a second tongue which can define the width direction position of the circuit board by contact between the tongue and the side of the electrode formation area of the circuit board. A connector for connecting a circuit board, characterized in that: 2. A circuit board connected to a connector, and the integrated connector and circuit board are positioned and held by a projection provided on the connector and around the circuit board so that the connector can be connected to an external device. A memory card including at least a "U" -shaped casing in plan view and shield plates attached to both sides of the casing, wherein the contact leads are connected to electrodes arranged in alignment with an edge of the circuit board. The connector before connection to the circuit board, in which a jack terminal having one end is implanted in the insulator in a region excluding the contact lead, is located near both ends in the longitudinal direction outside the contact lead arrangement area on the contact lead protruding surface of the insulator. A pair of first tongue pieces facing each other in a state of being provided with a chevron that can be displaced in a separating direction by contact with the circuit board surface and contact the shield plate, and an electrode of the circuit board The may define the widthwise position of the circuit board in contact with the formation zone sides 2
The tongue piece is positioned at a position where the second tongue piece can be in contact with the electrode forming area side of the circuit board by bending the positioning ground terminal so that the tongue piece has a “U” shape when viewed from the front end. The circuit board before being connected to the connector is configured so that the “U” shape is planted so as to face the circuit board, and the circuit board is placed in an area where the circuit board contacts the first tongue piece of the connector. A memory card characterized in that it is formed with a ground pattern connected to the circuit of (1).