JP2850484B2 - IC card connector - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an IC card connector used when connecting an IC card to a terminal device or the like.

[Conventional technology]

Conventionally, as a method of connecting an IC card to a terminal device or the like, there is a method of attaching the IC card to a terminal device side connector. This terminal device-side connector (hereinafter simply referred to as a connector) is provided with an insertion slot into which an IC card is inserted and withdrawn, and a male contact connected to a female contact of the IC card is inserted into the insertion slot. It was provided to face. The method of electrically connecting this connector to the circuit board on the terminal device side is roughly classified into a through-hole method and a surface-mount method. Of the two methods, the surface mounting method is often used. Further, in the past, only one IC card was used for one device, but in recent years, devices that can use two or more IC cards per device have been devised. As described above, in a device that can use a plurality of IC cards, the circuit board for connector mounting is made substantially horizontal, and the connectors are surface-mounted on the upper and lower surfaces of the circuit board. That is, the two IC cards are mounted in two upper and lower tiers. The reason why the upper and lower stages are used is that mounting efficiency and ease of use as a device are considered.

This type of conventional connector will be described with reference to FIGS. 4 (a) to (c) to FIGS. 6 (a) and (b).

FIG. 4 shows (a) to (c) conventional connectors.
FIG. 2A is a plan view, FIG. 2B is a front view, and FIG.
Is a side view. FIG. 5 is a side sectional view showing a state where a conventional connector is mounted on a circuit board, and FIGS. 6 (a) and 6 (b) are enlarged views showing a connector mounting portion of the circuit board on which the conventional connector is mounted. 2A shows the upper surface, and FIG. 1B shows the lower surface. FIG. 6 (b) is a perspective view of the lower surface of the circuit board seen from the upper surface side. In these figures, reference numeral 1 denotes a conventional IC card connector.
Is composed of a housing portion 2 as a connector body and leads 3 for mounting the connector 1 on a circuit board described later. The housing portion 2 is integrally formed of a synthetic resin as a whole, and is formed in a bottomed square cylindrical shape having an insertion port 5 into which an IC card 4 is inserted and withdrawn. A lead 3 is penetrated and held at the bottom of the bottomed rectangular tube in the housing portion 2. In addition, the penetration position of the lead 3 is located at a substantially central portion in the thickness direction of the housing portion 2. Further, a key 5a for preventing the IC card 4 from being inserted in a state where the IC card 4 is turned left and right is provided on one of four inner side walls of the insertion port 5 so as to protrude toward the inside of the insertion port 5. I have.

The lead 3 faces the insertion port 5 of the housing 2 and is connected to a female contact (not shown) of the IC card 4.
And a mounting portion 3b protruding to the side of the housing portion 2 and mounted on a circuit board to be described later by soldering or the like. A plurality of the mounting portions 3b are provided in the housing portion 2. The mounting portion 3b of each lead 3 is bent at a substantially central portion in the longitudinal direction thereof, and is bent with respect to a base portion (a penetrating portion to the housing portion 2) so that a protruding end is positioned on the same plane as the lower surface 2a of the housing portion 2. Is unevenly distributed.

The IC card 4 is formed to have a dimension to be inserted into the insertion port 5 of the connector 1, and a female contact (not shown) to which the contact portion 3a of the lead 3 is inserted and connected is provided at the front end in the connection direction. Built-in. A key 5a of the connector 1 is provided at the front end of the IC card 4 in the connection direction.
Is provided with an erroneous insertion preventing recessed groove 6 into which is fitted.

Reference numeral 7 denotes a circuit board for connecting the connector 1 to a terminal-side device (not shown). The circuit board 7 is attached to the terminal-side device so that a main surface thereof is substantially horizontal, and upper and lower surfaces thereof are provided. Each of the connectors 1 is surface-mounted. Reference numerals 8 denote connector mounting lands to which the leads 3 of the connector 1 are soldered. A plurality of lands 8 are provided on the upper and lower surfaces of the circuit board 7 in a positional relationship corresponding to the leads 3 of the connector 1. .., N written on the lands 8 in FIGS. 6A and 6B indicate names of signal wirings connected to the lands 8. And the circuit board 7
The same connector 1 is used for the upper and lower connectors. The connector 1 located on the lower surface side of the circuit board 7 is mounted in a state where the lower surface 2a of the housing portion 2 is turned upside down. I have. That is, in the lower connector 1 and the upper connector 1, as shown in FIG. 5, the key 5a provided in the insertion port 5 is located on the left and right opposite sides. The lands 8 provided on the lower surface of the circuit board 7 are arranged such that the signal wirings are arranged in an order that is higher than that of the lands 8 on the upper surface side, because the lands 8 are mounted with the connector 1 inverted as described above. Is set to be left-right reversed.

The connector 1 thus configured is surface-mounted on the upper and lower surfaces of the circuit board 7 by soldering the leads 3 to the lands 8. That is, the connector 1 mounted on the upper surface of the circuit board 7 is mounted with the lower surface 2a of the housing portion 2 in contact with the upper surface of the circuit board 7, and the connector 1 mounted on the lower surface of the circuit board 7 is mounted on the housing portion. 2 is mounted with its lower surface 2a in contact with the lower surface of the circuit board 7 with its lower surface turned upside down. When connecting the IC card 4 to the terminal-side device, the IC card 4 is inserted into the insertion port 5 of the connector 1. At the time of insertion, the erroneous insertion preventing groove 6 is positioned on the same side as the key 5a of the connector 1.
That is, as shown in FIG. 5, the IC card 4 mounted on the upper connector 1 has the concave groove 6 on the right side, and the IC card 4 mounted on the lower connector 1 has the concave groove 6 on the left side. Insert.

[Problems to be solved by the invention]

However, in the conventional connector 1 configured as described above, when mounted on the upper and lower surfaces of one circuit board 7, the IC card 4 mounted on the upper connector 1 and the IC card 4 mounted on the lower connector 1 are mounted. And you have to reverse the front and back. Therefore, there is a problem that the operator is easily confused when the IC card 4 is mounted. In addition, the lands 8 provided on the upper surface of the circuit board 7 and the lands 8 provided on the lower surface of the circuit board 7 have to be arranged left and right in the order in which the signal wires are arranged when viewed from above. In addition, there has been a limit in reducing the size of the circuit board.

[Means for solving the problem]

The IC card connector according to the present invention includes a connector body.
A plurality of contacts having one end facing the inside of the IC card insertion port and the other end penetrating through the side of the connector main body and protruding to the side are provided, and the connector main body is brought into contact with the terminal device circuit board, and the contact is made. The protruding end of the connector is biased toward the contact surface side of the connector body with respect to the base and connected to the electrode of the circuit board,
A connector for an IC card which is surface-mounted so as to form a pair on the front surface and the back surface of the circuit board. The connector body of the front-side connector and the connector body of the back-side connector are formed so as to have the same structure. The connector body has a surface on the front and back opposite to the surface of the connector body on the front side opposite to the circuit board.

(Operation)

When the connector of the present invention is mounted on the lower surface side of the circuit board,
The vertical orientation of the connector body is the same as that of the connector on the top side.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 (a) to 3 (c) to 3 (a) and 3 (b).

1 (a) to 1 (c) are views showing a connector of the present invention, wherein FIG. 1 (a) is a plan view, FIG. 1 (b) is a front view, and FIG. 1 (c) is a side view. FIG. 2 is a side sectional view showing a state in which the connector of the present invention is mounted on a circuit board, and FIGS.
(B) is an enlarged view showing a connector mounting portion of a circuit board on which the connector of the present invention is mounted, wherein (a) shows an upper surface and (b) shows a lower surface. FIG. 3 (b) is a perspective view of the lower surface of the circuit board seen from the upper surface side. In these figures, the same or equivalent members as those described in FIGS. 4 (a) to (c) to FIGS. 6 (a) and (b) are denoted by the same reference numerals, and detailed description is omitted. In these figures, reference numeral 11 denotes a connector according to the present invention. The connector 11 includes a housing portion 2 as a connector main body and a lead 12, and the lower surface (back surface) of the circuit board 7
Is surface mounted. As shown in FIG. 2, the housing 2 of the connector 11 is formed so as to have the same structure as the housing 2 of the connector 1 mounted on the upper surface (front surface) of the circuit board 7. The lead 12 is connected to the housing 2
A contact portion 12a which faces the insertion port 5 of the IC card 4 and is connected to the female contact of the IC card 4, and a mounting portion 12b which projects to the side of the housing portion 2 and is mounted on the land 13 of the circuit board 7 by soldering or the like. And a plurality of them are provided in the housing part 2. The mounting portion 12b of each lead 12 is bent at a substantially central portion in the longitudinal direction, and the protruding end is formed on the upper surface 14 of the housing portion 2.
It is unevenly distributed with respect to the base portion (the penetrating portion to the housing portion 2) so as to be positioned on the same plane as.

The plurality of lands 13 are provided on the lower surface of the circuit board 7 in a positional relationship corresponding to the leads 12 of the connector 11. The conventional connector 1 is mounted on the upper surface of the circuit board 7.
Are provided. The arrangement order of the signal wires connected to the lands 13 is set to be the same as that of the upper surface lands 8 when viewed from above.

In order to mount the connector 11 according to the present invention configured as described above on the circuit board 7, the upper surface 14 of the housing 2 is brought into contact with the lower surface of the circuit board 7. That is, the upper surface 14 opposite to the lower surface 2a of the housing portion 2 of the connector 1 mounted on the upper surface side (front surface side) of the circuit board 7 is brought into contact with the circuit substrate 7. When the housing 2 is brought into contact with the circuit board 7 in this manner, the protruding ends of the leads 12 come into contact with the lands 13 provided on the lower surface of the circuit board 7. Then, the lead 12 is fixed to the land 13 by soldering or the like, and the mounting operation is completed. That is, in the connector 11 mounted on the lower surface of the circuit board 7 and the connector 1 mounted on the upper surface, the key 5a provided in the insertion port 5 is located on the same side as shown in FIG. . For this reason, the IC card 4 mounted on the upper connector 1 and the IC card 4 mounted on the lower connector 11 are inserted with the concave grooves 6 positioned on the same side (the right side in this embodiment). Is done.

Therefore, when the connector 11 of the present invention is mounted on the lower surface of the circuit board 7, the vertical direction of the housing 2 is the same as that of the connector 1 mounted on the upper surface of the circuit board 7. For this reason, the direction of the front and back of the IC card 4 can be made the same between the one mounted on the upper connector 1 and the one mounted on the lower connector 11. Since the lands 8 provided on the upper surface of the circuit board 7 and the lands 13 provided on the lower surface have the same signal wiring arrangement order when viewed from above, the wiring patterns are substantially equal on the front and back surfaces of the circuit board 7. Can be formed.

〔The invention's effect〕

As described above, the IC card connector according to the present invention includes a plurality of contacts whose one end faces the inside of the IC card insertion slot of the connector main body and the other end of which penetrates the side of the connector main body and projects laterally. The connector body is brought into contact with the terminal device circuit board, and the protruding end of the contact is biased toward the contact surface side of the connector body with respect to the base and connected to the electrode of the circuit board. An IC card connector which is surface-mounted so as to form a pair on the front surface and the back surface,
The connector body of the front side connector and the connector body of the back side connector are formed so that their structures are the same. Since the connector body is brought into contact with the board, the vertical direction of the connector main body is the same as that of the connector on the upper surface side in the mounted state. Therefore, the IC card mounted on each of the upper and lower connectors has the same front and back direction, so that the mounting operation of the IC card can be performed smoothly without confusing the front and back directions. Further, since the wiring pattern of the circuit board can be formed substantially equally on the upper surface side and the lower surface side of the circuit board, the configuration of the circuit board is simplified. Therefore, the size of the circuit board can be reduced.

[Brief description of the drawings]

1 (a) to 1 (c) are views showing a connector of the present invention.
FIG. 2A is a plan view, FIG. 2B is a front view, and FIG.
Is a side view. FIG. 2 is a side sectional view showing a state where the connector of the present invention is mounted on a circuit board, and FIGS. 3 (a) and 3 (b).
FIGS. 2A and 2B are enlarged views showing a connector mounting portion of a circuit board on which the connector of the present invention is mounted, wherein FIG. 1A shows an upper surface and FIG. 1B shows a lower surface. 4 (a) to 4 (c) are views showing a conventional connector. FIG. 4 (a) is a plan view and FIG. 4 (b).
Is a front view, and FIG. 3C is a side view. FIG. 5 is a side sectional view showing a state where a conventional connector is mounted on a circuit board, and FIGS. 6 (a) and 6 (b) are enlarged views showing a connector mounting portion of the circuit board on which the conventional connector is mounted. Then, FIG.
Shows the upper surface, and FIG. 2B shows the lower surface. 2 ... housing part, 4 ... IC card, 5 ... insertion port, 7 ... circuit board, 11 ... connector, 12 ... lead
12b Mounting part, 13 Land, 14 Top surface.

Claims (1)

(57) [Claims] 1. A terminal device comprising: a plurality of contacts having one end facing an IC card insertion opening of a connector body and the other end penetrating a side portion of the connector body and protruding laterally; So that the protruding end of the contact is biased toward the contact surface side of the connector body with respect to the base and connected to the electrode of the circuit board, so that the front and back surfaces of the circuit board form a pair. An IC card connector to be mounted on a surface, wherein a connector body of a front side connector and a connector body of a rear side connector are formed so as to have the same structure, and the connector body of the rear side connector is attached to a circuit board of the front side connector body. An IC card connector characterized in that the surface opposite to the contacting surface is opposite to the circuit board.