JP3715720B2 - IC card connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an IC card connector having a pin contact for connecting and housing an IC card, a memory card or the like in an electronic circuit.
[0002]
[Prior art]
Although there are several types of IC cards and memory cards, the present invention relates to an IC card connector applied to an IC card having a socket contact into which a pin contact is inserted, and is generally referred to as a pin connector name. It is what has been. As shown in FIG. 4, as an example, the pin connector 1 is shown together with a part of the IC card, and a plurality of pin contacts 4 and 5 are implanted in the center connecting portion 3 of the substantially H-shaped frame 2 in two stages. . Further, guide grooves 8 are respectively provided on the insertion side of the IC card 7 of the frame body 6 on both sides of the frame 2, and the locking portion 61 on the opposite side is provided with screws or lock pins on the printed circuit board (not shown). A mounting hole 9 is provided for mounting and fixing with each other. One end of the plurality of pin contacts 4 and 5 implanted in the central connection portion 3 of the frame 2 protrudes so as to be inserted into the socket contact 10 of the IC card 7, and the other end is a circuit of the printed wiring board. It is bent approximately 90 ° so as to be connected to the terminal, and is provided so as to slightly protrude from the bottom surface of the frame 2.
FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4 showing a state where the IC card 7 is mounted on the pin connector 1, and a protruding portion which is one end of the pin contacts 4, 5 is formed on the socket contact 10 of the IC card 7. Inserted and circuit connection is made. Metal plates are usually attached to both surfaces of the IC card 7 in order to prevent the influence of static electricity.
[0003]
[Problems to be solved by the invention]
However, even when the IC card 7 having a metal plate attached to the pin connector 1 described above is mounted, when information or data is transmitted at high speed between the IC card 7 and another communication device. There is a problem that noise is generated and an error occurs, or the IC and memory in the IC card may be destroyed by static electricity generated when the IC card 7 is mounted on the pin connector 1. Careful handling is required, and further improvements have been desired for IC card connectors.
The present invention improves the pin connector to prevent the occurrence of noise in the IC card and prevent the IC and memory from being destroyed by static electricity.
[0004]
[Means for Solving the Problems]
The IC card connector according to the present invention, the connecting portion having one end a plurality of pin contacts that other end is fitted into the socket contacts of the IC card having a metal plate is connected to the circuit terminals of the printed circuit board is embedded in the upper surface A substantially H-shaped pin connector having a locking portion that is formed on both sides of the connecting portion with the insertion guide portion of the IC card and is attached to the printed wiring board by screwing or the like,
At one side edge, when the IC card is inserted into the insertion guide portion of the pin connector, it is formed in a horizontally long shape so as to face the insertion side space portion of the IC card so as to contact the upper surface metal plate of the IC card. And the contact spring piece formed on the other side edge by press-fitting grooves so as to sandwich the ground contact pin contact of the pin contact from above and bent in the plate thickness direction. When the grounding plate spring member having a latching tongue having a pin connector mounting hole to be mounted by screwing or the like with the pin connector engages the printed circuit board to said engaging portion of It is configured by wearing.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment of an IC card connector according to the present invention, which is constructed by mounting a grounding plate spring member 11 on the pin connector 1 shown in FIGS. 4 and 5 from above. It has been done.
This grounding plate-like spring member 11 is provided with a grounding pin contact 4a, 4b of the pin contact 4 provided with a press-fit groove 12 that sandwiches the pin contact 4a, 4b from above, and is bent in the thickness direction. Spring pieces 13a and 13b, a plurality of contact spring pieces 15 whose front end portions are bent and formed so as to face the IC card insertion side space portion 14 of the pin connector 1, and printed wiring of the pin connector 1 A fixing tongue piece 17 having a locking hole 16 coinciding with the mounting hole 9 for fixing to the substrate is provided.
[0006]
The grounding plate spring member 11 is mounted on the pin connector 1 by temporarily pressing the grounding spring pieces 13a and 13b into the pin contacts 4a and 4b and sandwiching the pin springs 11a and 13b. When fixing to the mounting hole 9, the locking hole 16 is overlapped with the mounting hole 9 and fixed together. FIG. 2 shows a cross-sectional view of a state in which the grounding plate spring member 11 is attached to the pin connector 1 and the IC card 7 is inserted into the pin connector 1. That is, in this state, the contact spring piece 15 of the ground plate spring member 11 contacts the upper metal plate of the IC card 7, and the ground spring pieces 13a and 13b contact the pin contacts 4a and 4b which are ground terminals. As a result, the metal plate of the IC card 7 is grounded, and external noise is prevented from being picked up and the generation of static electricity is suppressed, so that the IC card 7 can be prevented from being damaged.
[0007]
In this embodiment, the contact spring piece 15 of the grounding plate spring member 11 is formed in a comb-like shape separated into a plurality, but it may be formed in an integral shape without being separated. The material of the grounding plate spring member 11 is suitably a conductor plate having a spring property such as a phosphor bronze plate or a beryllium copper plate.
Further, since the material of the frame 2 is required to have heat resistance during soldering, PBT (polybutylene terephthalate), PET (polyethylene terephthalate), 46PA (nylon), 66PA (nylon), PPS (polyphenylene sulfide), LCP Examples include electrically insulating plastics such as (liquid crystal polymer), but PBT is preferable in consideration of cost and moldability.
[0008]
The pin contact 4 is generally composed of three parts: a contact part that comes into contact with the IC card 7, a fixed part that is fixed to the central coupling part 3 of the frame 2, and a tail part that is connected to the printed wiring board. The frame 2 is held and fixed by press fitting or the like. Examples of this material include phosphor bronze, beryllium copper, brass, etc., which are highly conductive, but brass is preferred in consideration of workability and conductivity. As the shape of the tail portion of the pin contact, an L-shaped dip type is shown in this embodiment, but a surface mount type or a straight dip type may be used. In this embodiment, the pin contacts are arranged in two upper and lower stages, but they may be provided in one row.
The size of the pin connector that is the subject of the present invention is about 57 mm in length, about 35 mm in width, and about 7 mm in thickness. Since the width dimension changes depending on the number of cores and the pitch, it is designed appropriately according to these requirements. In this embodiment, the number of cores and the pitch are 68 cores and 1.27 mm pitch.
[0009]
【Example】
FIG. 3 shows another embodiment of the present invention. In the pin connector 21, the mounting hole portion of the locking portion 61 is formed as a notch portion 23 provided with a step portion 22, and the pin connector 21 is attached to the pin connector 21. The left and right fixing tongues 25 of the grounding plate spring member 24 are formed at the tip of the crank-shaped bent portion 26. Accordingly, since the inner surface portion 27 of the crank-shaped bent portion 26 is engaged with the inner standing portion 28 of the notch portion 23 of the pin connector 21, the left and right crank-shaped bent portions 26 are slightly bent inward. Accordingly, the provisional fixing can be more reliably performed by the clamping force between the grounding spring pieces 13a and 13b and the pin contacts 4a and 4b and the locking force by this portion.
[0010]
【The invention's effect】
As described above in detail, when the IC card is connected to the electronic circuit formed on the printed wiring board via the pin connector, the metal plate on the upper surface of the IC card is grounded through the grounding plate spring member. Therefore, it is possible to prevent the occurrence of errors due to noise generated during high-speed transmission of information or data. In addition, it is possible to prevent the IC and memory in the IC card from being destroyed by static electricity generated when the IC card is mounted on the pin connector.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a grounding plate spring member and a pin connector separately according to an embodiment of the present invention.
2 is a cross-sectional view of a state in which the grounding plate spring member of FIG. 1 is mounted on a pin connector and an IC card is inserted. FIG.
FIG. 3 is a perspective view separately showing both a grounding plate spring member and a pin connector according to another embodiment of the present invention.
FIG. 4 is a perspective view illustrating a conventional pin connector.
5 is a cross-sectional view showing a state where an IC card is inserted into the pin connector shown in FIG.
[Explanation of symbols]
1, 21 Pin connector 2 Frame 3 Center connecting part 4, 5 Pin contact 6 Frame 7 IC card 8 Guide groove 9 Mounting hole 10 Socket contact 11, 24 Grounding plate spring member 12 Press-fit groove 13 Grounding spring piece 14 Space Part 15 Contacting spring piece 16 Locking holes 17 and 25 Fixing tongue piece 22 Step part 23 Notch part 26 Crank-shaped bent part 27 Inner surface part 28 Inner standing part

Claims (3)

One end has a connecting portion in which a plurality of pin contacts are implanted other end is fitted into the socket contacts of the IC card having a metal plate is connected to the circuit terminals of the printed wiring board on the upper surface, opposite sides of the connecting portion In the substantially H-shaped pin connector provided with a locking portion that is formed with an insertion guide portion of the IC card and is attached to the printed wiring board by screwing or the like,
At one side edge, when the IC card is inserted into the insertion guide portion of the pin connector, it is formed in a horizontally long shape so as to face the insertion side space portion of the IC card so as to contact the upper surface metal plate of the IC card. Contact spring pieces,
A grounding spring piece formed on the other side edge by press-fitting grooves so as to sandwich the grounding pin contact among the pin contacts from above and bent in the thickness direction ;
The grounding plate spring member having a latching tongue with the pin connector the mounting hole engaged with the engaging portion is mounted by screwing or the like with the pin connector to the printed circuit board is mounted IC card connector configured.   2. The IC card connector according to claim 1, wherein the contact spring pieces of the ground plate spring member are formed in a comb shape as a plurality of separated contact spring pieces.   The locking portion of the pin connector is formed by providing a step portion so as to be buried from the upper surface of the pin connector, and the fixing tongue of the plate spring member for grounding is engaged with the step portion of the pin connector. 3. The IC card connector according to claim 1, wherein the connector is formed at a tip of a crank-shaped bent portion formed so as to be formed.

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