JP2006210276A - Connector for memory card - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a memory card which can prevent instantaneous power interruption. <P>SOLUTION: The connector 1 for the memory card is connected to the memory card MC electrically by a contactor 3 by inserting the memory card MC which exposes a contact part MC2 to a front surface MC1 and juxtaposing a plurality of contactors 3 each having a biasing force to the position opposed to the contact part MC2. A card pressing part 26 which regulates the position of a reverse side to the contact part MC2 of the memory card MC is provided in the counter position of the juxtaposed contactor 3 through the memory card MC. In the card pressing part 26, a pressing spring 27 which energizes the memory card MC to the contactor 3 side is provided, the contact pressure of the contact part MC2 and the contactor 3 is obtained by the contactor 3 and the pressing spring part 27. At the time of the movement of the contactor 3 or the memory card MC accompanied by instantaneous movement by a shock, etc., or the direction of the instantaneous power interruption movement of the memory card MC, the instantaneous power interruption is inhibited by moving so that the contactor 3 and the pressing spring part 27 may follow in the same direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a memory card connector. Specifically, the present invention relates to a memory card connector capable of maintaining an electrically connected state by holding an inserted memory card and connecting the memory card with a contact of the memory card.

With the development of electronic devices, it is now possible to use recording media in small electronic devices such as mobile phones, and recording media such as memory cards have been miniaturized, and various types of memory such as SD memory cards and SIM cards. Card is being used.
Along with this, connectors for memory cards have been developed in electronic devices such as mobile phones that use memory cards so that the memory cards can be securely mounted and a stable electrical connection can be obtained.
For example, there was a memory card connector.

Hereinafter, a conventional memory card connector will be described with reference to FIGS.
MC is a memory card, which is a SIM card. The memory card MC has a thin plate shape, and a contact portion, which is a plurality of contact portions, is exposed on one side and is in electrical contact with a memory card connector. Data exchange is possible.
Reference numeral 100 denotes a conventional memory card connector. The memory card connector 100 is a SIM card connector, and has a contact surface 101 having a width corresponding to the shape of the memory card MC that is a SIM card. A plurality of contact pieces 102 that can be connected to the contact portion of the inserted memory card MC are provided on the surface of the contact surface 101 facing the contact portion of the SIM card. The contact piece 102 protrudes from the surface and is urged so as to generate a pressing force by a spring force when pressed to the surface side.

  Further, a standing wall 103 having a thickness of the memory card MC is provided from opposite sides of the contact surface 101 so as to sandwich the memory card MC inserted into the contact surface 101, and further from the standing wall 103. A card presser portion 104 that protrudes toward the standing wall is provided. By providing the standing wall 103 and the card pressing portion 104 in this way, the memory card MC can be mounted on the memory card connector 100 with the contact portion positioned on the contact piece 102 as shown in FIG. Become. At this time, since the contact piece 102 is pressed by the contact portion of the memory card MC, the contact piece 102 comes into contact with the contact portion of the memory card MC by an urging force. As described above, when the contact portion of the memory card MC is positioned on the contact piece 102, the contact piece 102 is pressed between the card pressing portion 104 and the contact surface 101, and the contact portion of the memory card MC is caused by the spring force. Is pressed and electrically connected.

The memory card MC mounted as described above and the memory card connector 100 can obtain a good connection state in a stationary state by the spring force of the contact piece 102.
However, the memory card MC is also used in scenes in which a user can swing and vibrate by carrying it around. The electrical contact between the memory card connector 100 on which the memory card MC is mounted and the memory card MC may be momentarily disconnected due to vibration. For example, in a foldable mobile phone, an acceleration equivalent to several hundred to several thousand times the gravitational acceleration is instantaneously applied by the vibration when folded, and this accelerates the contact piece 102 of the memory card connector 100 as well. Will be added. Then, at the moment when the vibration is finished, the acceleration returns again, but the urging force of the contact piece 102 does not have an urging force to keep the contact against this change in acceleration. There was a momentary break that left the contact part of the memory card MC for a moment.

This momentary disconnection is not limited to a mobile phone, and even in a portable terminal or a laptop computer in which the memory card MC is mounted on the memory card connector 100, it was dropped at the moment when it was placed on a desk or the like. There was a problem that a momentary interruption occurred.
Due to the instantaneous interruption that occurs in this way, there is a problem that the information on the memory card MC is broken or the program of the connected electronic device is broken.

  In view of the above problems, an object of the present invention is to provide a memory card connector that is less likely to cause an instantaneous interruption and can maintain a stable connection state.

  Therefore, in the present invention, in order to avoid instantaneous interruption, the problem is solved by configuring the inserted memory card or contact piece to follow the movement of the moving contact piece or memory card. To configure

For a memory card in which a memory card having a contact portion exposed on the surface is inserted, and a plurality of contact pieces having a biasing force are juxtaposed at a position facing the contact portion, and electrically connected to the memory card by the contact pieces In the connector,
A connector for a memory card, characterized in that a pressing spring portion for biasing the memory card toward the contact piece side is provided at a position opposite to the contact piece arranged in parallel through the memory card;

I will provide a. Therefore, according to the present invention, in the state where the pressing spring portion located on the opposite side of the plurality of contact pieces arranged in parallel presses the memory card toward the contact piece side and the memory cards are in contact with the contact pieces arranged in parallel. The contact piece is kept in electrical contact with the contact portion of the memory card while the memory card is sandwiched by the urging force of the contact piece and the urging force of the pressing spring portion. In this state, even if the momentary acceleration is applied to the memory card connector on which the memory card is mounted, the contact piece of the memory card connector moves, and the contact piece moves away from the contact portion of the memory card. Since the pressing spring portion located on the opposite side through the contact piece and the memory card presses the memory card by the biasing force, the memory card moves so as to follow the contact piece side, and the contact of the memory card The electrical connection between the part and the contact piece is maintained.
Further, in the present invention, a connector for a memory card in which a pressing portion is bent in an L shape so as to be opposed to each other at an opposing end in the memory card width direction of the connector, and the pressing spring portion is provided in the pressing portion,
I will provide a. In this memory card connector, the width direction of the memory card into which the pressing portion is inserted is defined, and the pressing spring portion is positioned at a position facing the memory card surface of the pressing portion to urge the memory card toward the contact one side. .

Therefore, according to the present invention, even if the contact piece electrically connected to the contact portion of the memory card by the urging force moves due to the momentarily applied acceleration, the pressing spring portion from the opposite side via the memory card. Since the memory card urges the memory card to the contact piece side, it is possible to prevent the memory card from moving so as to follow the movement of the contact piece and causing an instantaneous interruption. That is, when the memory card, the contact piece, and the pressing spring part are moved momentarily such that a momentary interruption occurs, the contact piece and the pressing spring part can move so as to follow while holding the memory card. It can be prevented.
Furthermore, the pressing portion is provided by bending the connector at the opposite end in the width direction of the memory card in an L shape so as to face each other, and the pressing spring portion is provided at the holding portion, so that the width direction of the memory card can be defined. Since the pressing spring portion can be easily provided in the parts constituting the pressing portion by cutting or the like, and the pressing portion also functions as the pressing spring portion, the pressing spring portion can be formed without increasing the number of components.

The memory card connector has a housing in which the memory card is located facing. The housing has a planar surface having the width of the memory card. A plurality of contact pieces projecting from the surface and having a biasing force are arranged in parallel in the width direction of the memory card at the end of the housing. The position where the plurality of contact pieces are arranged in parallel is a position facing the contact portion of the memory card when the memory card is mounted. Accordingly, when the memory card is mounted on the housing, the contact piece comes into contact with the contact portion of the memory card and is moved to the surface side against the urging force, so that a pressing force is obtained by the urging force to generate a contact pressure. .
A card guide wall is erected from the end of the housing in the width direction of the memory card. Furthermore, a card pressing part is provided by bending in an L shape from the standing wall. By providing the card guide wall and the card retainer provided in this way, the memory is provided between the card retainer and the housing surface along the card guide wall from the end opposite to the end provided with the contact piece of the housing. A card can be inserted. This card pressing part is formed from a metal plate capable of obtaining a spring force.

Further, a stopper wall is erected on the end edge of the housing on which the contact piece is provided. The stopper wall is provided so that the contact piece comes into contact with the contact portion of the memory card at the position where the end of the inserted memory card comes into contact with the stopper wall and the insertion is completed.
Further, a pressing spring portion is provided at a position facing the contact piece of the card pressing portion. The pressing spring portion is provided in the shape of a leaf spring that presses the memory card inserted by being guided by the card guide wall toward the housing surface. That is, at the position facing the contact piece of the card retainer, a U-shaped cut is made in the card retainer, and a part of the portion formed by the cut is formed on the housing surface facing the card retainer. Curved so as to protrude to By forming the section in this way, the section forms a pressing spring portion. The pressing spring portion presses the memory card inserted into the memory card connector toward the housing surface, so that the contact portion and the contact piece of the memory card are kept in contact with each other.
And when the memory card, contact piece, and the pressing spring part move momentarily, such that a momentary interruption occurs, the contact piece and the pressing spring part should follow to prevent the interruption while holding the memory card. Moving.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective explanatory view showing an embodiment of the present invention, FIG. 2 is a perspective explanatory view showing a state where the memory card is inserted, and FIG. 3 is a central sectional explanatory view of FIG.

  Reference numeral 1 denotes a memory card connector. The memory card connector 1 is a SIM card connector in this embodiment, but may be a connector corresponding to another memory card such as an SD card or a smart media card, and may be a memory card having a contact portion formed on the card surface. Any card can be used.

Here, the memory card MC used by being inserted into the memory card connector 1 will be described.
The memory card MC exposes a contact portion MC2 that enables electrical contact with an internal electronic circuit at the end of the main body surface MC1 formed on a flat surface by a polymer resin material that is an insulating material. It becomes. The contact portion MC2 is provided in a total of six locations with two rows of contact portions arranged in one row. Of course, if the memory card MC is not a SIM card, a plurality of contact portions MC2 are provided in parallel with other shapes.

  The memory card connector 1 holds the memory card MC by inserting the memory card MC formed as described above, and realizes electrical connection by contacting the contact portion MC2 of the card MC. It is.

The memory card connector 1 will be described in detail below.
As shown in FIG. 1, the memory card connector 1 is formed by projecting a plurality of contact pieces 3 capable of electrical contact from a surface 21 of a housing 2 formed of a resin material that is an insulating material. Since the memory card connector 1 is a SIM card connector, the contact piece 3 has three rows arranged in parallel in the width direction of the memory card MC so as to correspond to the contact part MC2 of the memory card MC which is a SIM card. They are arranged in two rows in the direction. That is, it is provided in an array of 3 (width direction) × 2 (insertion direction).

  The contact piece 3 is formed of a conductive material having a spring force, and as shown in FIGS. 1 and 3, an end of the contact piece 3 is exposed on the back surface 22 side of the housing 2 and the memory card connector 1 is attached to an electronic device board or the like The base end portion 31 is formed so as to be connectable. The other end is extended from the base end portion 31 and folded back into a U shape to form the contact portion 32. And the contact part 32 is located so that it may protrude in the surface 21 side of the housing 2, and obtains urging | biasing force by the intermediate part 33 etc. which turned up in U shape. By configuring the contact piece 3 in this way, when the contact portion 32 is pressed in contact with the contact portion MC2 of the memory card MC installed on the surface 21 of the housing 2, a contact pressure can be obtained by a spring force. . The contact piece 3 formed in this way may be the same as that provided for the general memory card connector 1.

By inserting the memory card MC into the memory card connector 1, the contact portion 32 thus provided and the contact portion MC2 of the memory card MC have a good electrical connection state so that the card insertion side end of the housing 2 can be obtained. A stopper wall 24 that erects the end of the inserted memory card MC and restricts the insertion position is provided upright at the end facing the portion 23. Accordingly, since the stopper wall 24 stands upright so that the contact portion MC2 and the contact portion 32 of the memory card MC are opposed to each other, the memory card MC inserted from the insertion side end 23 abuts against the stopper wall 24. This completes the insertion.
In this embodiment, the stopper wall 24 is provided not only on the opposite side of the card insertion side end 23 but only on both ends. However, the stopper wall 24 may be provided on the entire side or only on the center of the side. May be.

Furthermore, the card guide wall 25 is erected on the housing 2 from the remaining two opposite sides. The card guide wall 25 is erected between the insertion side end 23 and the end portion where the stopper wall 24 is provided, and both ends in the width direction of the memory card MC inserted from the insertion side end 23 along the card guide wall 25. It is a guide that regulates insertion.
The card guide wall 25 of the housing 2 is provided with a card pressing portion 26 that is bent in an L shape toward the opposing card guide wall 25. The card presser 26 is attached and fixed at least at a position in the width direction of the memory card MC where the contact pieces 3 are arranged in parallel. As shown in FIG. 1, the card retainer 26 fixes one plate-like surface of the L-shaped metal plate to the outer surface of the card guide wall 25 as a mounting surface 26a, and the other plate-like surface is fixed. The presser guide surface 26b is provided so as to protrude in the opposing card guide wall 25 side, that is, in the width direction of the inserted memory card MC. The card pressing portion 26 configured as described above is attached and fixed so that the gap between the pressing guide surface 26b and the housing surface 21 is wider than the thickness of the memory card MC.

  A pressing spring portion 27 that urges the memory card MC inserted between the card pressing portion 26 and the housing surface 21 toward the housing surface 21 is provided on the pressing guide surface 26 b of the card pressing portion 26. The pressing spring portion 27 is configured by a section formed by providing a U-shaped notch portion on the presser guide surface 26b, and the section and the section of the housing surface 21 are narrower than the memory card MC. Is bent toward the housing surface 21 side. Thus, the pressing spring portion 27 has the spring force of the metal plate, and when the memory card MC is inserted between the card pressing portion 26 and the housing surface 21, it is pressed and deformed by the main body surface MC1 of the memory card MC. Therefore, the memory card MC can be pressed toward the housing surface 21 side, that is, the contact piece 3 side.

The memory card connector 1 configured as described above is used by being fixed to an electronic device or the like.
The operation of the memory card connector 1 will be described below.
When the memory card MC is inserted along the card guide wall 25 from the insertion side end 23 of the memory card connector 1, the end of the insertion side of the memory card MC abuts against the stopper wall 24. This state is a state in which the memory card MC is inserted into the memory card connector 1. In the memory card MC insertion state, the contact portion MC2 of the memory card MC is in contact with the contact portion 32 of the contact piece 3. The contact piece 3 in this state is in a state of being deformed to the inside of the housing 2 by the contact portion MC2 because the initial state protrudes from the housing surface 21, and the biasing force due to the spring force due to deformation of the intermediate portion 33 and other parts. To obtain a contact pressure for electrically connecting to the contact portion MC2.

At the same time, as shown in FIG. 3, the pressing spring portion 27 provided in the card pressing portion 26 is located on the opposite side of the contact pieces 3 arranged side by side at the position in the memory card MC insertion direction. Similarly, since it is deformed outward (upward in FIG. 3) by the memory card MC, a spring force is generated to press the memory card MC toward the contact piece 3 side.
Therefore, the contact pressure between the contact portion MC2 of the inserted memory card MC and the contact piece 3 is generated by the spring force of the contact piece 3 and the pressing spring portion 27.

In this state, when a momentary impact or the like is applied to an electronic device such as a mobile phone to which the memory card MC and the memory card connector 1 are attached, the contact piece 3 of the memory card connector 1 is caused by a momentary impact or the like. However, there is a state in which it moves to the housing rear surface 22 side instantaneously and at a very fine distance.
At this time, since the position of the memory card MC itself cannot be changed, the contact pressure between the contact portion MC2 and the contact piece 3 of the memory card MC as shown in the conventional example can be obtained only by the spring force of the contact piece 3. If the contact piece moves, the contact piece that moves is momentarily separated from the contact portion MC2 to be in an electrically unsatisfactory connection state or to be in an insulated state.
However, in the memory card connector 1, the pressing spring portion 27 at the position facing the contact piece 3 also moves in the same direction as the movement direction of the contact piece 3 so as to follow the movement of the contact piece 3 due to impact or the like. Then, the memory card MC is further pressed to the contact piece 3 side, and the electrical connection state between the contact portion MC2 of the memory card MC and the contact piece 3 is maintained.

  In the above example, the movement against the momentary breakage acts in the contact pressing direction between the contact portion MC2 and the contact piece 3 of the memory card MC, but in addition to the pressing spring portion 27, the same spring force as the pressing spring portion 27 is applied. For example, a pressure spring portion having a width may be provided on the side surface of the card guide wall 25 so as to press the side edge in the width direction of the memory card MC to the opposite side. By further providing the pressing spring portion in this way, it is possible to act to suppress instantaneous interruption against a lateral impact in addition to the contact pressing direction between the contact piece 3 and the contact portion MC2. Further, by providing a mechanism corresponding to the pressing spring portion in the same manner in the memory card MC insertion direction, the memory card connector 1 into which the memory card MC is inserted has an impact acting in any direction. It is possible to prevent instantaneous interruption.

  The memory card connector configured as described above can be applied to any memory card connector required when mounting a memory card on an electronic device, so a memory card connector attached to a mobile phone, It can be used in all electronic devices such as portable electronic terminals and notebook computers.

An explanatory perspective view showing an embodiment of the present invention Perspective explanatory view showing an embodiment in a state where a memory card is inserted 2 is a cross-sectional explanatory diagram of the center An explanatory perspective view showing a conventional example with a card inserted Perspective explanatory view showing a conventional example

Explanation of symbols

MC memory card MC1 main body surface MC2 contact portion 1 memory card connector 2 housing 21 housing surface 22 housing back surface 23 card insertion side end 24 stopper wall 25 card guide wall 26 card pressing portion 26a mounting surface 26b pressing guide surface 27 pressing spring portion 3 Contact piece 31 Base end portion 32 Contact portion 33 Intermediate portion

Claims (2)

For a memory card in which a memory card having a contact portion exposed on the surface is inserted, and a plurality of contact pieces having a biasing force are juxtaposed at a position facing the contact portion, and electrically connected to the memory card by the contact pieces In the connector,
A connector for a memory card, characterized in that a pressing spring portion for urging the memory card toward the contact piece side is provided at a position facing the contact pieces arranged side by side through the memory card. 2. The connector according to claim 1, wherein the connector is provided with a presser portion bent in an L shape so as to face opposite ends in the width direction of the memory card to be inserted, and the presser spring portion is provided in the presser portion. Memory card connector.

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