JP4169458B2 - Contact arrangement method for memory card connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for arranging contacts of a memory card connector when a plurality of different types of memory cards are selectively inserted into the same connector to operate an information device.
[0002]
[Prior art]
Conventionally, different types of memory cards, which serve as various information media, are each provided with a dedicated connector and attached to an information device, and the stored information on the media is taken out or stored.
[0003]
[Problems to be solved by the invention]
In recent years, with the progress of miniaturization of information equipment and miniaturization of substrates, the area occupied by the substrate is limited. However, when replacing multiple memory cards, preparing separate connectors requires multiple times the board area, which in turn increases the size of the information device, which is inconvenient for carrying. It is. In addition, a method in which a plurality of connectors are provided is conceivable. However, when a plurality of different cards can be inserted into one connector, it is difficult to arrange contacts.
[0004]
It is an object of the present invention to provide a contact arrangement method for a memory card connector in which a plurality of stages of different types of cards can be inserted from the same direction, an area occupied by the board is small, and a plurality of stages of contacts can be easily connected to the board. Yes.
[0005]
[Means for Solving the Problems]
The above object is a memory card connector into which two different types of cards are detachably inserted from the same direction, and has a housing having an insertion slot into which two different cards are inserted, and is held in this housing. In the contact arrangement method of the memory card connector comprising fixed contacts, the contacts that contact the card inserted in the upper stage protrude on both sides in the width direction perpendicular to the card insertion direction of the housing, and This can be achieved by arranging to be connectable to the pattern.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
A method for arranging contacts of a memory card connector according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of a memory card connector according to the present invention, and FIG. 2 is a top view and a front view of the memory card connector of FIG. The memory card connector according to the present invention mainly comprises a contact A, a contact B, a housing, and each switch terminal. This memory card connector has a structure in which different types of cards can be inserted in two upper and lower stages.
[0007]
One embodiment will be described with reference to FIGS. 1 and 2. Hereinafter, each component will be described. First, the housing 12 is an electrically insulating plastic and is manufactured by a known technique of injection molding. As the material of the housing 12, since dimensional stability, strength and low cost are required, polybutylene terephthalate (PBT), polyamide (PA), polycarbonate (PC) and the like are often used. As shown in FIG. 1, the housing 12 is provided with an insertion hole A24 and an insertion hole B22 so that, for example, an SSFDC card and an MS card can be shared, and an insertion for holding and fixing the contact A14 and the contact B16. A hole (not shown) is provided. An insertion hole (not shown) for holding and fixing each switch terminal is also provided. The housing 12 is provided with positioning pins 20 protruding toward the board connection side so that the connector can be easily positioned on the board. The positioning pins 20 may be integrated with the housing 12 or may be separate parts. The housing 12 has a substantially convex shape with the width direction lowered by one step.
[0008]
Next, the contact will be described. This contact is divided into a contact A14 that contacts the upper card A32 and a contact B16 that contacts the lower card B34. Each contact is made of metal, and is manufactured by a known technique of press working and requires springiness, conductivity, etc., so brass, beryllium copper, and phosphor bronze are often used. The contact mainly includes a contact portion that contacts the card, a fixed portion that is fixed to the housing 12, and a connection portion that is connected to the substrate. The contact A14 is in contact with the card A32, and is fixed to the upper insertion hole A24 so that the contact portion of the contact A14 protrudes, and is connected to the pattern of the board along the step portions on both sides in the width direction of the housing 12. Protrusions are placed so that they can. The contacts A14 are arranged on both sides of the housing 12 in the width direction so that the number of contact terminals of the card A32 is halved. The contact B16 is in contact with the card B34, and is fixed so that the contact portion of the contact B16 protrudes into the insertion hole B22 on the lower side, and the side of the substrate opposite to the side where the insertion hole B22 of the housing 12 is provided. Projecting and arranged so that it can be connected to the pattern. The arrangement positions of the contacts A14 and B16 are appropriately designed so as to match the pattern of the substrate.
[0009]
Next, based on FIG. 3, a description will be given of each switch terminal. The switch-related terminals include a switch terminal A26, a switch terminal B28, and a switch terminal C30. Each switch terminal is also made of metal like the contact, and is manufactured by a known press process, and is required to have springiness, conductivity, etc., and therefore, the same material as the contact is often used. The role of each switch terminal will be described. The switch terminal B28 is arranged so that the contact portion of the switch terminal B28 protrudes into the insertion hole A24 on the upper stage side. When the card A32 is inserted into the insertion hole A24, the card A32 contacts the contact portion of the switch terminal B28. The free end side of the switch terminal B28 is bent so as to come into contact with the switch terminal A26, so that it can be detected whether or not the card A32 is inserted. The switch terminal C30 is arranged so that the contact portion of the switch terminal C30 protrudes into the lower insertion hole B22. When the card B34 is inserted into the insertion hole B22, the card contacts the contact portion of the switch terminal C30. The free end side of the switch terminal C30 is bent so as to come into contact with the switch terminal A26, so that it can be detected whether or not the card B34 is inserted. The switch terminal A26 has a contact portion between the switch terminal B28 and the switch terminal C30 as described above, and both ends are fixed to the housing 12, and is for detecting insertion of the card A32 and the card B34.
[0010]
In general, the fixing bracket 18 is often used in order to cope with the distortion when the card is inserted when the memory card connector is connected to the substrate. The fixture 18 is also made of metal and is made by a known press working. The fixing bracket 18 is connected to the substrate together with contacts and switch terminals by reflow or the like.
[0013]
【The invention's effect】
The present invention can obtain the following remarkable effects by adopting the above-described structure.
(1) Since different cards can be inserted into the upper and lower stages, the area occupied by the board can be reduced.
(2) Even if different cards can be inserted in the upper and lower two stages by protruding the upper contact A on both sides in the width direction of the housing, it can be easily connected to the board without increasing the occupied area of the board. can do.
[Brief description of the drawings]
FIG. 1A is a perspective view of a memory card connector of the present invention as seen from the direction of a card insertion hole.
(B) It is the perspective view of the connector for memory cards of this invention seen from the protrusion side of the contact B. FIG.
2 is a top view and a front view of the memory card connector of FIG. 1. FIG.
FIG. 3 is an explanatory diagram for explaining each switch terminal;
[Explanation of symbols]
10 Memory Card Connector 12 Housing 14 Contact A
16 Contact B
18 Fixing bracket 20 Positioning pin 22 Insertion hole B
24 Insertion hole A
26 Switch terminal A
28 Switch terminal B
30 Switch terminal C
32 Card A
34 Card B

Claims (1)

A memory card connector in which two different types of cards are detachably inserted from the same direction,
In the contact arrangement method of the memory card connector, comprising a housing having an insertion slot into which two different cards are inserted, and contacts held and fixed to the housing,
A contact for a memory card connector, characterized in that contacts contacting a card inserted in the upper stage protrude on both sides in the width direction perpendicular to the card insertion direction of the housing and are arranged so as to be connectable to the pattern of the board Array method.

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