JPH04132181A - One-surface mounting type connector and two-piece type ic memory card using same - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] Regarding a single-sided mounting type connector and a two-piece type IC memory card using the same, productivity can be improved by suppressing the flow of molten solder into the inside of the connector during solder connection. A circuit board in which the external connection terminal portions at one end are arranged in a vertical matrix, and the connection portions at the other end connected to the external connection terminal portions are arranged at predetermined positions along the column direction. A single-sided mount connector equipped with a plurality of external lead-out terminals of two types each located corresponding to the lead-out electrodes arranged along the adjacent side of the top surface, the external lead-out terminals being located in the upper row of the connector. An external lead-out terminal having a connecting terminal portion is bent horizontally and vertically by two degrees from the external connecting terminal portion, and is provided with a connecting portion at a position corresponding to the lead-out electrode closer to the adjacent side of the circuit board, and An external lead-out terminal having an external connection terminal portion located in the lower row of the connector is formed with a connection portion located substantially straight from the external connection terminal portion and corresponding to the lead-out electrode farther from the adjacent side of the circuit board. and configure.

In addition, it is a two-piece type IC memory card in which the built-in IC memory card is connected to a connector with external connection terminals exposed at a predetermined position.
The single-sided mounting described in the preceding paragraph, which includes an IC memory card having a plurality of lead-out electrodes disposed along one edge thereof, and an external lead-out terminal having a connecting portion connected to each of the lead-out electrodes. It consists of a type connector and a metal cover that covers the entire periphery of the connector except for the surface where the external connection terminal portion is exposed.

[Industrial application field]

The present invention relates to a terminal configuration of a single-sided mount connector that is soldered to an IC memory card, and in particular to a single-sided mount connector that suppresses the flow of molten solder into the connector during solder connection and improves productivity. This invention relates to a two-piece IC memory card using a 2-piece IC memory card.

[Conventional technology]

FIG. 3 is a diagram showing an example of the configuration of a conventional single-sided mount type connector.

Note that the figure shows an example in which the present invention is applied to a two-piece type IC memory card.

In general, the number of connectors attached to two-piece IC memory cards is small (the number of radicals in the external connection terminal portion of the connector and their relative positions are determined by the Japan Industrial Promotion Association).
It is set based on the standards established by AIDA.

In FIG. 3, each extraction electrode 2 of the IC memory card 1 is patterned on one side of the card 1, but especially in the case of the memory card 1 shown in the figure, the amount of information and the degree of integration of the memory card 1 are limited. Because of the large size, the number of extraction electrodes 2 is large, and therefore it is impossible to form them in a row while ensuring the required size of the extraction electrodes 2.
a,...2a0°2bn, 2b2. ...They are formed in a staggered arrangement like 2bwa.

Further, a connector opening/locking mechanism part 3 is formed at a predetermined position on both widthwise sides of the memory card l, for example, to protrude in the widthwise direction, and the connector locking mechanism part 3 is provided with a connector opening and a locking mechanism part 3 that penetrates in the thickness direction. By fitting a locking mechanism section of a connector (described later) into the provided hole 3a, the memory card l
The connector is configured to be positioned relative to the connector.

On the other hand, a single-sided mount type connector 11 connected to the memory card l includes an insulator 12 and a plurality of external lead-out terminals 1 of two types.
3.14.

In particular, the insulator 12 in this case is arranged so that the external connection terminal portions 13a and 14a of the plurality of external lead-out terminals 13 and 14 are arranged in accordance with the standards established by the Japan Industrial Promotion Association (JAIDA) (in the figure). Holes L2a into which the external connection terminal portions 13a and 14a can be inserted and fixed are formed so as to form a vertical matrix shape with a pitch h in the vertical direction and a pitch p in the horizontal direction. A locking mechanism portion 12c having a protrusion 12b that fits into the hole 3a is formed on both sides in the width direction corresponding to the hole 3a of No. 3.

Further, the plurality of two types of external lead-out terminals 13.14 attached to the insulator 12 fit the protrusion 12b of the locking mechanism section 12c of the connector 11 into the hole 3a of the connector locking mechanism section 3 of the memory card 1. When the two are positioned and fixed together, the respective corresponding extraction electrodes 2al, 2a2 . -2an, 2b+.

2b2...2bn are formed.

That is, the connection portion 13b of the external lead-out terminal 13 located on the top row side in the drawing of the connector 11 is connected to the memory card l.
Corresponding extraction electrodes 2a, 2a2. 2a, . . . is bent downward in the drawing by a height h relative to the external connection terminal portion 14a, and is longer than the external lead-out terminal 13 located on the lower row side of the connector 11. The connection portion 14b of the short external lead-out terminal 14 is connected to the lead-out electrodes 2b1, 2bz...2b of the memory card l.
The external connection terminal portion 14a is bent in an offset manner so as to be shifted by 1/2 of the pitch p in the lateral direction with respect to the external connection terminal portion 14a so as to be in contact with the external connection terminal portion 14a corresponding to the pitch p.

Therefore, each extraction electrode 2a+2a2 of the memory card l
...2a, , 2bl, 2b2. -2bn, with solder paste applied, for example, and connect the connector 11 to arrow B.
When the connector 11 is moved and attached to the memory card 1 as shown in FIG.
b, 14b is connected to each of the above lead electrodes 2 via solder paste.
a,,2a2,...2a,,,2bl,2b2.・・・
・Since it comes into contact with 2bn, the two can be easily connected by soldering using normal glue flow means heated to about 215°C.

However, the molten solder at the time of connection is the external lead terminal 13°I4.
The molten solder flows easily over the external connection terminal section 1 inside the connector, especially in the case of the flat and short external lead-out terminal 14.
It may flow up to 4a.

[Problem to be solved by the invention]

The conventional terminal configuration of single-sided mount connectors has a problem in that molten solder during connection may flow over the external connection terminals of the connector and into the external connection terminal portion inside the connector.

[Means to solve the problem]

The above problem is caused by a circuit board in which the external connection terminals at one end are arranged in a vertical matrix, and the connection parts at the other end connected to the external connection terminals are arranged at predetermined positions along the column direction. A single-sided mount connector equipped with a plurality of external lead-out terminals of two types each located corresponding to the lead-out electrodes arranged along the adjacent side of the top surface, the external lead-out terminals being located in the upper row of the connector. An external lead-out terminal having a connecting terminal portion is bent horizontally and vertically by two degrees from the external connecting terminal portion, and is provided with a connecting portion at a position corresponding to the lead-out electrode closer to the adjacent side of the circuit board, and An external lead-out terminal having an external connection terminal portion located in the lower row of the connector is formed with a connection portion located substantially straight from the external connection terminal portion and corresponding to the lead-out electrode farther from the adjacent side of the circuit board. The solution is a single-sided mount connector.

Further, a two-piece IC memory card in which a built-in IC memory card is connected to a connector disposed at a predetermined position with an exposed external connection terminal, at least
The single-sided mounting described in the preceding paragraph, comprising an IC memory cart having a plurality of lead-out electrodes disposed along one end face, and an external lead-out terminal having a connecting portion connected to each of the lead-out electrodes. The problem is solved by a two-piece IC memory card consisting of a metal connector and a metal cover that covers the entire periphery except for the surface where the external connection terminal portion of the connector is exposed.

[For production]

If the terminal that comes into contact with the molten solder is placed upright against the molten solder surface, the molten solder can be prevented from creeping up.

In the present invention, flat and short external connection terminals are placed on the upper row side of the connector, and the external connection terminals are bent twice horizontally and vertically to prevent molten solder from creeping up. I try to do that.

Therefore, it is possible to suppress the flow of molten solder into the inside of the connector during connection.

〔Example〕

FIG. 1 is a diagram illustrating an example of the terminal configuration of a single-sided mount type connector according to the present invention, and FIG. 2 is a diagram illustrating a case where the connector is applied to a two-piece type IC memory card.

Similar to FIG. 3, FIG. 1 is an enlarged view of only the connection portion between the IC memory card and the connector, and the same symbols are attached to the same components as in FIG. 3.

In FIG. 1, each extraction electrode 2 of the IC memory card l is '2ar, 2at, 2afi, 2b1, 2b as in FIG.
2=.2bfi are arranged in a double staggered pattern, and the connector lock mechanism portions 3 explained in FIG. 3 are formed at predetermined positions on both sides of the memory card 1 in the width direction. There is.

On the other hand, the single-sided mounting type connector 21 connected to the memory card 1 is composed of the insulator 12 described in FIG. 3 and a plurality of two types of external lead-out terminals 22 and 23.

In this case, the external lead-out terminals 22 and 23 are also connected to the protrusion 12 of the locking mechanism portion 12c of the insulator 12, as in the case of FIG.
b is fitted into the hole 3a of the connector locking mechanism part 3 of the memory card l, and when both are positioned and fixed, the respective corresponding extraction electrodes 2a1 and 2 of the memory card l
a, ...2an, 2b1, 2b2. ”・2
In particular, the external lead terminals 22 located on the top row side of the connector 21 in the drawing are connected to the lead electrodes 2b1 and 2b2 whose connecting portions 22b are closer to the edge of the memory card l. ... A double offset bend is made in which the terminal is bent downward in the drawing by the height h relative to the external lead-out terminal 23 at a position shifted by 1/2 of the pitch p in the lateral (right side of the drawing) direction so as to contact the 2bn. The external lead-out terminals 23 located on the lower row side of the connector 21 have connecting portions 23b of the lead-out electrodes 2a, 2a, . It is formed into a substantially straight shape so as to correspond to and come into contact with.

Therefore, each extraction electrode 2a+2a2 of the memory card l
...2a, , 2b1, 2b2.・With solder paste applied to 2bn, move the connector 21 in the direction of arrow B and attach it to the memory card l, and the connector 2
Connection part 22bn 23 of each external extraction terminal 22.23 of 1
b connects each of the above lead electrodes 2b1 and 2 through solder paste.
t) 2...2bfi, 2a1, 2a2...2a
Since it is in contact with, it is the same as in the case of Fig. 3, which can easily connect the solder by normal flow means.

Particularly in this case, the extraction electrodes 2a, 2a2 . . . 2a, the length of the external lead-out terminal 23 is long, so that the molten solder during connection does not flow into the external connection terminal part 23a (also, the lead-out electrode 2b+, which is close to the edge of the memory card l) 2b2゜...
The external connection terminal 22 connected to the molten solder external connection terminal 22 has a double offset bend with a height h difference between the external connection terminal 22a and the external connection terminal 22a.
The inflow to a can be blocked.

Therefore, the flow of molten solder into the interior of the connector can be suppressed for both the external lead-out terminals 22 and 23, and a soldering operation with high productivity can be realized.

Further, in FIG. 2 showing the case where the present invention is applied to a two-piece IC memory card, l indicates an IC memory card and 2I indicates a single-sided mounting type connector, as explained in FIG. 1.

Each of the lead-out electrodes 2 of the IC memory card 1 and the external lead-out terminals 22 and 23 of the single-sided mount connector 21 are connected by soldering in the manner described in FIG.

Then, the IC memory card l and the single-sided mounting type connector 21
This means that the entire periphery of each of the external lead-out terminals 22 and 23 of the connector 21, except for the exposed surface of the external connecting terminal portions 22a and 23a, is covered with a metal cover 24 made of, for example, stainless steel, and a required two-piece IC memory card is installed. 25.

In the two-piece IC memory card 25 having such a configuration, external connection terminal portions 22a and 23a are arranged based on the above-mentioned standards of the Japan Industrial Promotion Association (JAIDA).
Since there is no solder attached to the parts during internal connection, there is an advantage that it can be attached to any plug-side connector configured based on the standard without any trouble.

[Effects of the Invention] As described above, the present invention provides a single-sided mount connector that suppresses the flow of molten solder into the connector during solder connection and improves productivity, and a two-piece IC memory card using the same. can be provided.

[Brief explanation of drawings]

Fig. 1 is a diagram illustrating an example of the terminal configuration of a single-sided mount type connector according to the present invention, Fig. 2 is a diagram illustrating a case where it is applied to a two-piece type IC memory card, and Fig. 3 is a diagram illustrating a conventional single-sided mount type connector. This is a diagram showing a configuration example. In the figure, l is an IC memory card, 2, 2al, -2a, 2bl, -2ba are extraction electrodes, 3 is a connector locking mechanism, 3a is a hole, 12 is an insulator, 12b is a protrusion, and 12c is a locking mechanism. 21 is a single-sided mounting type connector, 22 and 23 are external extraction terminals, 22a and 23a are external connection terminal parts, 22bn and 23b are connection parts, 24 is a metal cover 25
represent a two-piece IC memory card, respectively.

Claims (2)

[Claims] (1) A top surface of a circuit board in which external connection terminals at one end are arranged in a matrix of two rows, one above the other, and connection parts at the other end connected to the respective external connection terminals are arranged at predetermined positions along the column direction. A single-sided mount type connector equipped with a plurality of external lead-out terminals of two types each located in correspondence with lead-out electrodes arranged in two rows along the adjacent sides, the external connection being located in the upper row of the connector. External lead-out terminal (with terminal part (22a))
22) is bent horizontally and vertically by two degrees from the external connection terminal part (22a), and then a connection part (23b
), and an external lead-out terminal (23) having an external connection terminal part (23a) located in the lower row of the connector extends almost straight from the external connection terminal part (23a) on the side far from the adjacent side of the circuit board. A connection part (23) located corresponding to the extraction electrode
A single-sided mount type connector characterized by being formed with b). (2) A two-piece IC memory card in which the built-in IC memory card is connected to a connector with external connection terminals exposed at predetermined positions, and at least two rows are arranged along one end surface. A plurality of extraction electrodes (2a_1, 2a_2...2a_n, 2b
_1, 2b_2, ... 2b_n) and the respective extraction electrodes (2a_1, 2a_2...
2a_n, 2b_1, 2b_2...2b_n), the single-sided mount type connector and External connection terminal part of the connector (
22a, 23a) and a metal cover (24) that covers the entire periphery except for exposed surfaces.