JP4042293B2 - Manufacturing method of connector for IC card with switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an IC card connector (hereinafter referred to as a SIM connector) suitable for a mobile phone or the like, and more particularly, to a configuration of a connector switch for detecting whether or not an IC card is inserted and a molding method thereof.
[0002]
[Prior art]
FIG. 6 is a perspective view of a conventional SIM connector 100 with a switch, and FIG. 7 is an enlarged cross-sectional view of the conventional switch 102 that is provided in the SIM connector 100 with a switch for detecting whether or not a SIM card 101 is inserted. Illustrated. A SIM card 101 inserted into the guide cover 103 is indicated by a two-dot chain line. A contact 105 with the SIM card 101 is embedded in the molding base 106 by insert molding. Reference numeral 107 denotes a connection terminal with an external circuit provided for taking out signals from the IC card, and reference numeral 108 denotes a switch terminal.
[0003]
The conventional switch portion 102 is a metal thin plate having two electric conductivity, which is a fixed piece 109 and a movable piece 111 composed of a free end 110 which is cantilevered and fixed at one end to a molding base 106 as electric contacts. It is configured. The contact 113 provided on the protrusion 112 of the movable piece 111 engages with the synthetic resin portion 114 provided on the free end 110 of the movable piece 111 and the SIM card 101 pushes the movable piece 111 to switch the switch portion 102. Is closed.
[0004]
[Problems to be solved by the invention]
Thus, in the conventional switch part 102, since the two metal pieces of the fixed piece 109 and the movable piece 111 are overlapped in the thickness direction, the thickness S is smaller than that of the product without the switch part 102. The increase in size is unavoidable, and this configuration hinders the thinning of the SIM connector 100 with a switch, which is a problem for products that are premised on lightness, thinness, and smallness.
[0005]
Further, the synthetic resin portion 114 provided on the movable piece 111 in order to avoid direct contact with the SIM card 101 is insert-molded into the synthetic resin portion 114 by a separate process, or a molded product of the synthetic resin portion 114. The movable piece 111 is fixed by press fitting. For this reason, it is inevitable that the manufacturing cost required for the separate process greatly affects the product price.
[0006]
Therefore, an object of the present invention is to reduce the manufacturing cost by thinning the SIM connector with a switch and simplifying the process.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the manufacturing method of the present invention provides a contact so as to form a circuit in contact with an IC card inserted into a connector, and a fixed terminal of a switch for detecting whether an IC card is inserted or not. A member for supporting the movable terminal of the switch so as to come into contact with the fixed terminal in accordance with the insertion of the IC card is provided, and the member is in contact with the IC card of the movable terminal. The portion to be formed is simultaneously molded with resin.
[0009]
Further, in the above method, the portion of the movable terminal that contacts the IC card may be provided with a connecting portion between the movable terminal supporting member and integrally molded with resin, and then the connecting portion may be excised. .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments will be described below with reference to the drawings of an embodiment of a SIM connector with a switch according to the present invention. FIG. 1 is an exploded perspective view of a SIM connector 10 with a switch according to the present invention, and FIG. FIG. 3 is a plan view showing the switch portion 12 in a partially enlarged manner, and FIG. 4 is a cross-sectional view taken along line 4-4 of FIG.
[0011]
The switch-equipped SIM connector 10 includes a contact 18 that forms a circuit with the IC card 14, a signal extraction terminal 20 of the IC card, and a molding base 24 in which the switch terminal 22 is configured at specified positions, and a cover 26 that serves as an IC card insertion guide. Consists of Further, the fixed side contact piece 28 of the switch unit 12 is formed on the printed circuit board surface 29 together with other circuit patterns by an appropriate means such as etching. The fixed-side contact piece 28 partially exposes the conductor surface to ensure that the switch action functions. In FIG. 4, the fixed side contact piece 28 is exaggerated, but is the same surface as the printed circuit board surface 29.
[0012]
On the other hand, only the movable side contact piece 30 of the switch portion 12 is supported in a cantilever-like shape with one end as a fixed end 32 by insert molding. The movable side contact piece 30 is an elastic piece made of a good conductive metal thin plate, and the fixed end 32 side is a single continuous plate, but the extended portion 36 of the free end 34 is double-rowed on both sides by a groove 40. The central contact arm 42 is separated from the operation arm 44.
[0013]
Further, the double row operation arm 44 is elastically displaced integrally by the pushing of the synthetic resin portion 46 mounted on the tip. As described above, the double row operation arm 44 and the central contact arm 42 are configured to be independent from each other, but the acting force acting on each of them is transmitted to each other via the continuous portion 38 on the fixed end 32 side. . Therefore, the double row operation arm 44 and the central contact arm 42 can be independently elastically displaced, but the displacements affect each other.
[0014]
Further, the synthetic resin portion 46 has a slope 48 in the direction of the fixed end 32, and in the process of inserting the IC card 14 in the direction of arrow A in the figure, the tip engages with the slope 48 and slides along the surface. As a result, the synthetic resin portion 46 is pushed downward (in the direction of arrow B in the figure), and the double-row operation arm 44 is bent downward due to elastic deformation. This deformation is transmitted to the central contact arm 42 through the continuous portion 38 on the fixed end 32 side. The central contact arm 42 is displaced following the elastic deformation of the double-row operation arm 44, and the contact 50, which protrudes by bending the free end 34, is connected to the fixed side of the switch unit 12 mounted on the printed circuit board surface 29. The circuit is closed by pressing against the piece 28.
[0015]
At this time, the double row operation arm 44 is forced to be elastically deformed by the IC card 14. On the other hand, after the central contact arm 42 is displaced until the contact 50 abuts against the fixed-side contact piece 28, the acting force due to the further elastic deformation of the double row operation arm 44 is relaxed by the continuous portion of the fixed end 32, and the central contact The arm 42 is elastically deformed, and an appropriate pressure contact force is applied to the contact 50.
[0016]
As described above, the use of the pattern surface 29 of the printed board as the fixed-side contact piece 28 constituting the contact on one side of the switch unit 12 makes the structure extremely simple and enables the thickness D to be reduced.
[0017]
A method for manufacturing the synthetic resin portion 46 formed on the movable contact piece 30 of the switch portion 12 in the SIM connector with switch 10 according to the present invention will be described below. Usually, the signal extraction terminal 20 and the switch terminal 22 of the IC card are configured in the molding base 24 by insert molding. In the SIM connector 10 with a switch according to the present invention, the synthetic resin portion 46 of the movable contact piece 30 is molded at the time of insert molding, thereby eliminating the need for molding in a separate process and improving work efficiency.
[0018]
That is, the synthetic resin portion 46 of the movable contact piece 30 can be easily formed by laying the connecting portion 52 as shown by the shadow in FIG. 5 between the synthetic resin portion 46 and the molding base 24 at the time of molding. The connecting portion 52 can be molded and can be easily cut off by a separation process after molding. Therefore, the trace of the cutting process left on the product can be used as an index for identifying that the manufacturing method is related to the present invention.
[0019]
【The invention's effect】
As apparent from the above description, according to the SIM connector with a switch according to the present invention, the fixed side contact piece of the switch for identifying the presence or absence of IC insertion is configured as a part of the printed circuit on the molded printed board. The connector with switch can be made thin. Further, since the synthetic resin portion of the movable contact piece is simultaneously molded with the molding base, the number of processes can be reduced, and the manufacturing efficiency can be improved and the price can be reduced.
Note that the present invention can be used not only for mobile phones but also for electronic devices that use IC cards widely. Further, the base may not be a molded base. Furthermore, the fixed side contact piece may not use the pattern of the printed circuit board.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a SIM connector with a switch according to the present invention.
FIG. 2 is a perspective view showing the assembled state of FIG. 1;
FIG. 3 is a partially enlarged plan view of a switch portion in an embodiment of a SIM connector with a switch according to the present invention.
4 is a cross-sectional view taken along line 4-4 of FIG.
FIG. 5 is a plan view for explaining a method for manufacturing a switch portion in an embodiment of a SIM connector with a switch according to the present invention.
FIG. 6 is a perspective view of a conventional SIM connector portion with a switch.
7 is a cross-sectional view taken along line 7-7 in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 SIM connector with switch 12 Switch part 14 IC card 24 Molding base 28 Fixed side contact piece 29 Pattern surface 30 Movable side contact piece 42 Central contact arm 44 Double row operation arm 46 Synthetic resin part 52 Connection part

Claims (2)

  A contact is provided so as to form a circuit in contact with the IC card inserted into the connector, and a fixed terminal of a switch for detecting the presence / absence of insertion of the IC card is disposed as a pattern of a printed circuit board to which the connector is attached, A member for supporting the movable terminal of the switch so as to come into contact with the fixed terminal in accordance with insertion of the IC card is provided, and the member and the portion of the movable terminal that contacts the IC card are simultaneously molded with resin. A method for manufacturing an IC card connector with a switch. Portion in contact with the IC card of the movable terminal, after integrally molding a resin provided with interlocking portions between the movable terminal support member, according to claim 1, wherein the ablating the interlocking portion Manufacturing method of connector for IC card with switch.

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