JP2008251509A - Adapter for memory card - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adapter for a memory card capable of short-circuiting contact parts for a socket without increasing the number of components, and of surely connecting the contact parts for a socket to terminals of the socket in a specified order. <P>SOLUTION: This adapter 1 for a memory card is provided with a contact block 3 electrically connecting the memory card to the socket. The contact block 3 is provided with: the contact parts 4 for the socket connected to the terminals of the socket by contact surfaces 41 formed on the front side; a short-circuiting part 7 short-circuiting the contact parts 4 for a socket to one another; and a holding part 9 formed by insert molding, exposing the contact surfaces 41 of the contact parts 4 for a socket, and holding them in a form embedding the short-circuiting part 7. The short-circuiting part 7 is structured to be integrally extended from end surfaces 40 on the side of the contact parts 4 for a socket in the connection direction to the socket, and to position the front surface 7a on the rear side relative to the contact surface 41. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a memory card adapter for connecting a memory card to a socket for a large memory card having an outer shape larger than that of the memory card.

  In recent years, with the miniaturization of devices such as mobile phones and PDAs, it has been desired to reduce the size of memory cards such as SD memory cards and multimedia cards (MMC). There are provided mini-SD memory cards that are reduced in size, and micro-SD memory cards that are further reduced in outer shape of the SD memory card (around the outer shape of the mini-SD memory card).

  Here, since the external shape of the mini SD memory card is smaller than that of the SD memory card, it cannot be directly connected to the socket for the SD memory card, and the external shape of the micro SD memory card is smaller than that of the mini SD memory card. Therefore, it cannot be directly connected to the mini SD memory card or the socket for the SD memory card.

  Therefore, a memory card adapter has been proposed that allows a memory card to be connected to a socket for a large memory card having an outer shape larger than that of the memory card.

  This type of memory card adapter is formed in a box shape that is the same size as the outer shape of a large-sized memory card, and an adapter main body into which a memory card is inserted and removed through a card insertion opening opened on a side surface, and a memory card stored in the adapter main body And a contact block used for electrical connection between the socket and the socket (see, for example, Patent Documents 1 and 2).

  Here, the contact block includes a plurality of socket contact portions that are electrically connected to each of the plurality of terminals of the socket by a contact surface provided on one end side in the thickness direction orthogonal to the connection direction to the socket, and a memory card. A plurality of memory card contact portions electrically connected to each of the plurality of terminals, and the socket contact portion and the memory card contact portion are electrically connected to each other based on a terminal arrangement of the memory card and the large-sized memory card. Connected.

  For example, each of Patent Documents 1 and 2 exemplifies a memory card adapter for connecting a mini SD memory card to a socket for an SD memory card. Here, the SD memory card has nine terminals, two of which are ground terminals. In addition, the mini SD memory card has a total of 11 terminals including two spare terminals added to nine terminals similar to the SD memory card.

  Therefore, in a memory card adapter for connecting a mini SD memory card to an SD memory card socket that is a larger memory card than a mini SD memory card, the socket contact portion and the memory card contact portion are: They are electrically connected in a one-to-one correspondence.

  On the other hand, in the micro SD memory card, since one of the two ground terminals is omitted from the nine terminals similar to the SD memory card, the micro SD memory card has a total of eight terminals. Therefore, in a memory card adapter for connecting a micro SD memory card to a socket for a mini SD memory card (or SD memory card), both of the two socket contact portions corresponding to the ground terminal are connected to the micro SD memory card. It is necessary to electrically connect to the memory card contact portion connected to the ground terminal of the memory card, that is, to short-circuit between the two socket contact portions.

  Here, in the SD memory card and the mini SD memory card, since the two ground terminals are not adjacent to each other, it is difficult to short-circuit them by integrally forming them, and the two contact parts for the socket are short-circuited. In this case, it is necessary to newly provide a conductive member that becomes a short-circuit portion for short-circuiting the two socket contact portions.

  Thus, when a conductive member is newly provided, the number of parts increases, and the operation | work which incorporates a conductive member is needed in connection with this, As a result, the problem that manufacturing cost increased had arisen.

  In view of such a problem, a memory card adapter that can short-circuit the socket contact portion without increasing the number of components has been proposed (for example, Patent Document 3).

In the contact block in Patent Document 3, a short-circuit portion that short-circuits between the socket contact portions is integrally extended from the end surface of the socket contact portion on the connection direction side to the socket. Further, the contact block is formed by insert molding to expose the contact surfaces of the plurality of socket contact portions and the plurality of memory card contact portions, and to embed a short-circuit portion and to embed a plurality of socket contact portions and a plurality of contact blocks. A holding part for holding the memory card contact part and the short-circuit part is provided.
JP 2004-272704 A Japanese Patent Laid-Open No. 2004-280718 Japanese Patent Laying-Open No. 2005-242448 (see paragraph numbers [0019] to [0021] and FIGS. 1 and 4)

  By the way, in the memory card as described above, it is preferable that the order in which the terminals of the memory card are connected to the terminals of the socket is defined (that is, has a sequence structure). For example, it is preferable that the ground terminal is connected to the socket terminal before the data transmission terminal.

  Here, the order of the socket contact portions connected to the socket terminals when mounted on the socket is defined by changing the position of the end surface of the socket contact portion in the direction along the connection direction to the socket. The

  Therefore, like the memory card adapter shown in Patent Document 3, when the short-circuit portion that short-circuits between the socket contact portions extends integrally from the end surface of the socket contact portion, the contact of the socket contact portion The surface may be covered with the resin material for forming the holding part, or a part of the short-circuit part may be exposed from the holding part. As a result, the socket contact parts should be connected to the socket terminals in the specified order. There is a problem in that it cannot be performed (that is, a desired sequence structure cannot be obtained).

  SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the object thereof is to short-circuit the socket contact portion without increasing the number of components, and in addition, the socket contact portion can be securely connected to the socket terminals in a prescribed order. It is to provide an adapter for a memory card that can be connected to a computer.

  In order to solve the above-mentioned problem, in the invention of claim 1, for a memory card used when the memory card is electrically and mechanically connected to a socket for a large-sized memory card having an outer shape larger than that of the memory card. An adapter body, which is formed in a box shape of the same size as the outer shape of the large-sized memory card and is inserted and removed through a card insertion opening opened on a side surface, and the memory card and the above-described memory card housed in the adapter body A contact block used for electrical connection with the socket, and the contact block is electrically connected to each of the plurality of terminals of the socket by a contact surface provided on one end side in the thickness direction orthogonal to the connection direction to the socket. A plurality of socket contact portions connected to the memory card and a plurality of terminals of the memory card. A plurality of memory card contact portions to be connected, a short-circuit portion for electrically connecting the socket contact portions based on the terminal arrangement of the memory card and the large memory card, and a plurality of contact portions formed by insert molding. A plurality of socket contact portions, a plurality of memory card contact portions, and a holding portion for holding the short-circuit portion in a form in which the contact surface of the socket contact portion and the plurality of memory card contact portions are exposed and the short-circuit portion is embedded. A plurality of memory card contact portions are electrically connected to the socket contact portions based on the respective terminal arrangements of the memory card and the large memory card, and the plurality of socket contact portions are connected to the socket. The direction of the end surface on the connection direction side is the direction along the connection direction. The order in which the terminals of the socket are connected when the socket is mounted is defined, and the short-circuit portion is integrally extended from the end surface of the socket contact portion, and in the thickness direction. The one end side surface is configured to be positioned on the other end side in the thickness direction with respect to the contact surface of the socket contact portion.

  According to the invention of claim 1, since the short-circuit part that electrically connects and short-circuits the socket contact parts is integrally extended from the end surface on the connection direction side to the socket in the socket contact part, Since it is not necessary to newly provide a conductive member for short-circuiting the socket contact portion, the socket contact portion can be short-circuited without increasing the number of components. In addition, the surface of the short-circuit portion facing the one end side in the thickness direction is located on the other end side in the thickness direction with respect to the contact surface formed by the one end side surface in the thickness direction of the socket contact portion. Therefore, when the holding part is formed, the resin material for forming the holding part does not easily reach the contact surface of the contact part for the socket through the short-circuit part, so that the contact surface is not covered with the resin material for forming the holding part. As a result, a part of the short-circuit portion can be prevented from being exposed from the holding portion. As a result, the contact surface of the socket contact portion can be exposed from the holding portion 9 as designed. It can be connected to the socket terminals in the specified order. Moreover, since the short-circuit part integrally formed in the socket contact part is embed | buried under the holding | maintenance part, it can suppress that the contact part for socket provided with the short-circuit part peels from a holding | maintenance part.

  According to a second aspect of the present invention, in the first aspect of the invention, the short-circuit portion is configured to electrically connect the two socket contact portions, and the connection from each of the end surfaces of the two socket contact portions. A pair of extending portions extending along the direction and having the tip portion aligned, and a width direction perpendicular to the connecting direction to the socket in a plane parallel to the contact surface of the socket contact portion in the longitudinal direction And a connecting portion that integrally connects the pair of extending portions, and the pair of extending portions are bent at a portion where the distance from the end face of the socket contact portion is a predetermined value. The connecting portion is formed with a rolled portion that is rolled according to the difference in length of the pair of extending portions and maintains the shape of the connecting portion in a shape in which the width direction is the longitudinal direction. And

  According to the invention of claim 2, even if the position of the end face of the socket contact portion that is short-circuited by the short-circuit portion is different, the connecting portion is connected to the socket in a plane parallel to the contact surface of the socket contact portion. Since the width direction orthogonal to the longitudinal direction can be maintained, the portion where the extension portion is bent by bending the extension portion so that the connecting portion has the shape having the width direction as the longitudinal direction. Can be avoided.

  The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the short-circuit portion is embedded in the holding portion in a state where the short-circuit portion is bent so as to overlap the socket contact portion in the thickness direction. To do.

  According to the invention of claim 3, it is possible to secure an insulation distance between the short-circuit portion and the socket contact portion that is not short-circuited by the short-circuit portion, and the socket contact portion provided with the short-circuit portion is peeled off from the holding portion. It can further be suppressed.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the end face of the contact portion for the socket not provided with the short-circuit portion is integrally provided with a peeling preventing portion embedded in the holding portion. The protrusion is provided and the peeling preventing portion is bent to the other end side in the thickness direction, and a surface on one end side in the thickness direction is located on the other end side in the thickness direction with respect to the contact surface. It is configured.

  According to invention of Claim 4, it can suppress that the contact part for sockets in which the short circuit part is not provided peels from a holding | maintenance part. In addition, the peeling preventing portion is located on the other end side in the thickness direction, with the surface facing the one end side in the thickness direction being located on the other end side in the thickness direction than the contact surface consisting of the one end side surface in the thickness direction of the socket contact portion. Therefore, it is difficult for the resin material for forming the holding part to reach the contact surface of the contact part for the socket through the anti-peeling part when forming the holding part, so that the contact surface is covered with the resin material for forming the holding part. As well as preventing a part of the peeling prevention part from being exposed from the holding part, the contact surface of the socket contact part can be exposed from the holding part as designed, and the socket contact The parts can be securely connected to the socket terminals in the prescribed order.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the contact portion for the memory card is provided with a contact spring piece that contacts the terminal of the memory card, and the contact spring piece. Is characterized in that it extends from a portion of the memory card contact portion opposite to the connection direction side toward the connection direction side.

  According to the invention of claim 5, compared to the case where the contact spring piece is extended from the connection direction side portion of the memory card contact portion, the connection direction side portion of the memory card contact portion and the opposite side thereof. Since the spring length can be increased by the distance between the two parts, a desired spring force can be ensured even in a narrow space.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the contact spring piece is formed so as to approach the memory card housed in the adapter main body as it goes to the connection direction side.

  According to the sixth aspect of the present invention, the contact spring piece can easily come into contact with the terminal of the memory card and a predetermined contact pressure can be ensured. Therefore, the contact reliability between the contact portion for the memory card and the terminal of the memory card is ensured. Improves.

  According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, between the memory card contact portion and the card insertion port in the adapter body, the card insertion port side of the memory card contact portion is provided. A rib for preventing contact between the end face of the memory card and the memory card is formed.

  According to the seventh aspect of the present invention, it is possible to prevent the memory card from colliding with the end face of the memory card contact portion on the card insertion slot side and the memory card contact portion from being bent (buckled).

  According to the present invention, the socket contact portion can be short-circuited without increasing the number of components, and the socket contact portion can be reliably connected to the socket terminals in a prescribed order.

  A memory card adapter (hereinafter simply referred to as “adapter”) 1 according to an embodiment of the present invention is a memory card (in this embodiment, a micro SD memory card) 100 (see FIG. 4), as shown in FIG. Is connected to a socket (not shown) for a large-sized memory card (in this embodiment, a mini SD memory card) having an outer shape larger than that of the memory card 100. In the following description, for simplification of description, unless otherwise specified, the arrow ab direction in FIG. 2 is the front-rear direction, the arrow cd direction is the left-right direction, and the arrow ef direction is the depth direction. explain.

  As shown in FIG. 2, the adapter 1 of the present embodiment is formed in a box shape having the same size as the outer shape of the large-sized memory card, and has a card insertion slot opened on a side surface (a front side surface indicated by an arrow f in FIG. 2) An adapter main body 2 into which the memory card 100 is inserted and removed through 2a, and a contact block 3 housed in the adapter main body 2 and used for electrical connection between the memory card 100 and the socket are provided.

  As shown in FIG. 1A and FIGS. 5A and 5B, the contact block 3 has a thickness orthogonal to the connection direction to the socket (back direction indicated by arrow e in FIG. 2) as a conductive portion. A plurality of elongate plate-like members electrically connected to each of the plurality of terminals of the socket by a contact surface 41 provided on one end side (that is, the front side) in the direction (the front-rear direction indicated by arrows a and b in FIG. 2) The socket contact portion 4, the long plate-like contact portions 5 for memory cards that are electrically connected to the plurality of terminals of the memory card 100, and the terminal arrangement of each of the memory card 100 and the large memory card And a short-circuit portion 7 for electrically connecting the socket contact portions 4 to each other (short-circuiting between the socket contact portions 4).

  Further, as shown in FIGS. 7A and 7B, the contact block 3 is formed by insert molding as an insulating portion, and the contact surfaces 41 of the plurality of socket contact portions 4 and the plurality of memory card contacts. A plurality of socket contact portions 4, a plurality of memory card contact portions 5, and a holding portion 9 that holds the short-circuit portions 7 are provided so as to expose the portion 5 and embed the short-circuit portion 7.

  By the way, since the adapter 1 of this embodiment is for connecting a micro SD memory card to a socket for a mini SD memory card, there are 11 terminals of the socket, and accordingly, the contact block 3 is 11. The socket contact portion 4 is provided. In the following description, the socket contact portions 4 are denoted by reference numerals 4A to 4K from the left side in order to distinguish the eleven socket contact portions 4 as necessary.

  In addition, the memory card 100 in the present embodiment is a micro SD memory card, and the micro SD memory card includes eight terminals arranged at a predetermined interval in the left-right direction. Eight memory card contact portions 5 are provided. In the following description, in order to distinguish the eight memory card contact portions 5 as necessary, the memory card contact portions 5 are denoted by reference numerals 5A to 5H from the left side.

  The socket contact portions 4A to 4K are provided in a shape corresponding to each of the plurality of terminals of the socket (that is, arranged in the same pitch as the plurality of terminals of the socket and in the horizontal direction with the depth direction as the length direction). The contact portion 4 for the socket is electrically connected to the terminal of the socket when the contact surface 41 contacts the terminal of the socket. Further, the socket contact portions 4A to 4K are arranged so that the position of the end face 40 on the connection direction side (that is, the direction of the arrow e shown in FIG. 2) to the socket differs in the direction along the connection direction. .

  In the contact block 3 of the present embodiment, the end surfaces 40 of the socket contact portions 4D and 4G are located closer to the connection direction than the end surfaces 40 of the other socket contact portions 4A to 4C, 4E, 4F, and 4H to 4K. ing. Therefore, when the memory card adapter 1 is mounted in the socket, the socket contact portions 4D and 4G are first connected to the terminals of the socket (the contact surface 41 of the socket contact portions 4D and 4G is first connected to the socket. After that, the other socket contact portions 4A to 4C, 4E, 4F, 4H to 4K are simultaneously connected to the socket terminals (the other socket contact portions 4A to 4C, 4E, 4F, 4H-4K contact surface 41 is simultaneously contacted with the socket).

  That is, the socket contact portions 4A to 4K are connected to the terminals of the socket when the memory card adapter 1 is attached to the socket by changing the position of the end face 40 in the direction along the connection direction. The order is specified.

  The memory card contact portions 5A to 5H are arranged in a shape corresponding to each of the plurality of terminals of the memory card 100 (that is, the same pitch as the plurality of terminals of the memory card 100 and the left-right direction with the depth direction as the length direction). Is provided. Further, the memory card contact portions 5A to 5K have the end face positions opposite to the connection direction side (that is, the arrow e direction shown in FIG. 2) to the socket (the arrow f direction shown in FIG. 2). It arrange | positions so that it may align in the direction along.

  Each of the memory card contact portions 5 is provided with a rectangular opening portion 50 extending in the thickness direction with the direction along the connection direction as a longitudinal direction. Further, as shown in FIG. 1B, the memory card 100 is shown from the inner side surface on the front side of the opening 50 that is the front side (opposite side to the connection direction side) of the memory card contact portion 5. The contact spring piece 51 that is in contact with the terminal is extended toward the connection direction. By providing the contact spring piece 51 in the memory card contact portion 5 as described above, the contact spring piece 51 is extended from the connection direction side portion of the memory card contact portion 5 or the memory card contact portion 5 itself. Compared with the case where the spring is formed in a spring shape, the spring length can be increased by the distance between the connection direction side portion of the memory card contact portion 5 and the opposite side portion, so that a desired spring force can be obtained even in a narrow space. It can be secured.

  Further, as the contact spring piece 51 goes to the connection direction side so that a step is generated between the rear surface of the terminal contact portion 51a formed from the front portion of the contact spring piece 51 and the rear surface of the memory card contact portion 5. It is formed in a shape that protrudes backward (that is, a shape that is close to the memory card 100 accommodated in the adapter main body 2). As a result, the contact spring piece 51 can easily come into contact with the terminals of the memory card 100 and a predetermined contact pressure can be secured. Therefore, the contact reliability between the memory card contact portion 5 and the terminals of the memory card 100 is improved. improves.

  The memory card contact portion 5 is electrically connected to the socket contact portion 4 based on the terminal arrangement of the memory card 100 and the large memory card. The memory card contact portion 5 in this embodiment is electrically connected to the socket contact portion 4 by an electrical connection portion 6. In addition, in the following description, in order to distinguish the electrical connection part 6 as needed, the electrical connection part 6 is represented by reference numerals 6A to 6H from the left side.

  Here, since the large memory card is a mini SD memory card, the socket contact portions 4A, 4B, 4J, and 4K are terminals for data transmission of the mini SD memory card, and the socket contact portion 4C is a mini SD memory card. The command terminals of the card, the socket contact portions 4D and 4I are the ground terminals of the mini SD memory card, the socket contact portions 4E and F are the spare terminals of the mini SD memory card, and the socket contact portions 4G corresponds to a power supply terminal of the mini SD memory card, and the socket contact portion 4H corresponds to a clock terminal of the mini SD memory card.

  On the other hand, the memory card 100 composed of a micro SD memory card has eight terminals as described above, and the first, second, seventh and eighth terminals from the left (right in FIG. 4) are terminals for data transmission, The third terminal from the left is the command terminal, the fourth terminal from the left is the power supply terminal, the fifth terminal from the left is the clock terminal, and the sixth terminal from the left is the ground terminal. Yes.

  Therefore, each of the memory card contact portions 5A, 5B, 5G, and 5H is a data transmission terminal of the micro SD memory card, and the memory card contact portion 5C is a command terminal of the micro SD memory card. The part 5D is a power supply terminal for the micro SD memory card, the memory card contact part 5E is a clock terminal for the micro SD memory card, and the memory card contact part 5F is a ground terminal for the micro SD memory card. Each corresponds.

  Therefore, in the contact block 3 in this embodiment, the socket contact portion 4A and the memory card contact portion are connected so that the socket contact portion 4A and the memory card contact portion 5A are electrically connected by the electrical connection portion 6A. 5A and the electrical connection part 6A are continuously formed integrally. Similarly, as shown in FIGS. 5A and 5B, the socket contact portions 4B, 4C, 4G, 4H, 4I, 4J, and 4K, the memory card contact portions 5B to 5H, and the electrical connection portion 6B, respectively. Each of ˜6H is continuously formed integrally.

  The short-circuit portion 7 short-circuits between the socket contact portions 4D and 4I corresponding to the ground terminals of the mini-SD memory card, so that both the socket contact portions 4D and 4I are used for the ground of the micro SD memory card. This is for electrical connection to the memory card contact portion 5F connected to the terminal.

  As shown in FIG. 6A, the short-circuit portion 7 extends from the end surfaces 40 of the socket contact portions 4D and 4I along the connection direction (backward direction), and the position of the tip portion is aligned. A pair of extending portions 70 and a pair of extending portions formed in the left-right direction (that is, in the width direction perpendicular to the connection direction in the plane parallel to the contact surface 41 of the socket contact portion 4). And a connecting portion 71 that integrally connects the tip portions of the setting portion 70. The short-circuit portion 7 bends the extended portion 70 90 degrees rearward at a portion where the distance from the end surface 40 of the socket contact portion 4 is a predetermined value, and then the end portion 70 is closer to the end surface 40 than the portion. The connecting portion 71 overlaps with the socket contact portion 4 in the direction along the surface direction of the facing surface 90 of the holding portion 9 (that is, the front-rear direction) by bending 90 degrees toward the front side at a portion where the distance becomes a predetermined value. It is formed into a shape. In addition, if the shape shown to Fig.6 (a) is obtained, even if the order which bends the extension part 70 is reverse, there is no problem.

  Here, there is no problem as long as the positions of the end surfaces 40 of the socket contact portions 4D and 4I are aligned, but the socket contact portions 4D and 4I have different positions of the end surfaces 40. The extending portion 70 extending from the end face 40 and the extending portion 70 extending from the end face 40 of the socket contact portion 4I are different in length.

  Therefore, when each of the extended portions 70 is bent as described above, the positions of the tip portions of the extended portions 70 are not aligned, and as a result, the longitudinal direction of the connecting portion 71 does not follow the left-right direction. Therefore, in the short-circuit portion 7 according to the present embodiment, as shown in FIG. 6B, the end portion of the connection portion 7 is formed by rolling a part of the connection portion 71 (in the illustrated example, the middle abdomen) by rolling. Is used as a part of the extending portion 70 having a short length so that the shape of the connecting portion 7 is maintained in the shape in which the left-right direction is the longitudinal direction. That is, a part of the connecting portion 7 that has been stepped is rolled according to the difference in length of the pair of extending portions 70 to maintain the shape of the connecting portion 7 so that the left-right direction is the longitudinal direction. It becomes the rolling part 71.

  Thus, if the rolling part 71 is provided in the connection part 7, even if the position of the end surface 40 of the socket contact part 4 short-circuited by the short-circuit part 7 is different, the connection part 71 is shaped so that the left-right direction is the longitudinal direction. Therefore, by bending the extending portion 70 so that the connecting portion 71 has a shape in which the left-right direction is the longitudinal direction, it is possible to prevent the portion where the extending portion 70 is bent from being wrong.

  Further, as shown in FIG. 1B, the short-circuit portion 7 has a surface on one end side in the thickness direction, that is, the front surface 7 a behind the contact surface 41 of the socket contact portion 4 (that is, the other end side in the thickness direction). It is comprised so that it may be located in. Note that FIG. 1B is extended in the thickness direction from FIG. 1A in order to display the positional relationship between the front surface 7a of the short-circuit portion 7 and the contact surface 41 of the socket contact portion in an easy-to-understand manner.

  By the way, the peeling prevention part 8 is provided in socket contact part 4A-4C, 4E-4H, 4J, 4K in which the short circuit part 7 is not provided.

  The peeling prevention part 8 is for preventing the socket contact part 4 from peeling from the holding part 9, and is provided with socket contact parts 4A to 4C, 4E to 4H, 4J in which the short circuit part 7 is not provided. , 4K projecting integrally on each end face 40. The peeling preventing portion 8 is formed in a T shape in which the width dimension on the distal end side is larger than the width dimension on the proximal end side, thereby making it difficult to come off the holding portion 9. Further, the peeling prevention unit 8 is bent 90 degrees rearward on the base end side so that the distal end side faces rearward. Further, like the short-circuit portion 7, the peeling preventing portion 8 is configured such that a surface on one end side in the thickness direction, that is, the front surface 8 a is located behind the contact surface 41 of the socket contact portion 4.

  The socket contact portion 4, the memory card contact portion 5, the electrical connection portion 6, the short-circuit portion 7, and the peeling prevention portion 8 as described above are formed by punching an elastic metal plate, for example. Yes.

  The holding portion 9 is a resin molded product made of an insulating resin material, and is formed in a rectangular plate shape with the left-right direction as the longitudinal direction. A circular fitting hole 9a used for fixing the contact block 3 to the adapter body 2 is provided in the thickness direction (front-rear direction) on both ends of the holding part 9 in the left-right direction. As shown in FIGS. 1 (b) and 7 (a), the socket contact portion 4 is inserted into the holding portion 9 such that the contact surface 41 is exposed to the front surface 90 side of the holding portion 9. . Here, the plane including the contact surface 41 of the socket contact portion 4 and the plane including the front surface 90 of the holding portion 9 are the same plane. On the other hand, the memory card contact portion 5 is inserted into the holding portion 9 so as to protrude from the front side of the holding portion 9. Moreover, both the short-circuit part 7 and each peeling prevention part 8 are inserted in the holding part 9 in the form completely embedded in the holding part 9. Therefore, the socket contact portions 4D and 4I provided with the short-circuit portion 7 and the socket contact portions 4A to 4C, 4E to 4H, 4J and 4K not provided with the short-circuit portion 7 are separated from the holding portion 9 (in particular, It can suppress that the end surface 41 side of the contact part 4 for sockets peels from the holding | maintenance part 9).

  Particularly, since the short-circuit portion 7 is embedded in the holding portion 9 in a state of being overlapped with the socket contact portions 4D to 4I in the direction along the thickness direction, the short-circuit portion 7 is not short-circuited by the short-circuit portion 7. Insulation distance between the contact portions 4A to 4C, 4E to 4H, 4J and 4K and the short-circuit portion 7 can be secured, and the socket contact portions 4D and 4I provided with the short-circuit portion 7 are peeled off from the holding portion 7. Can be further suppressed.

  The adapter main body 2 is formed to have the same size as the mini-SD memory card as described above. As shown in FIG. 3, the adapter main body 2 has a box-like base 20 with an open front, and a front opening of the base 20. And a cover 21 that is attached to the base 20 so as to cover it. Each of the base 20 and the cover 21 is a resin molded product made of an insulating resin material.

  A first storage portion 20a for the contact block 3 is formed on the back side of the front side of the base 20 (direction side indicated by an arrow e in FIG. 2). On the bottom surface of the first storage portion 20a, there are a pair of cylindrical fitting projections 20b for engaging the pair of fitting holes 9a of the holding portion 9 and fixing the contact block 3 in the left-right direction. Are formed integrally with each other. On the other hand, on the front side of the front side of the base 20 (the side indicated by the arrow f in FIG. 2), a second storage portion 20c for the memory card 100 is formed so as to communicate with the first storage portion 20a. A first opening 20d for inserting the memory card 100 into the second storage portion 20c is formed at the end on the near side.

  By the way, the adapter body 2 is provided with a locking member 22 for preventing the memory card 100 from being unexpectedly detached from the adapter 1. The locking member 22 is bent from, for example, an elastic band-shaped metal plate, and when the U-shaped fixing piece 22 a fixed to the base 20 and the memory card 100 are positioned at a fixed position with respect to the adapter 1. The memory card 100 is integrally provided with a notch 110 (see FIG. 4) and a square-shaped locking piece 22b that is concavo-convexly fitted. Correspondingly, a third storage portion 20e for storing the locking member 22 is formed on the left side (the direction side indicated by the arrow c in FIG. 2) of the second storage portion 20c of the base 20. The third storage portion 20e includes a fixing groove portion 20f that is concavo-convexly fitted to the fixing piece 22a of the locking member 22 to fix the locking member 22, and a hole that allows the locking piece 22b to advance toward the second storage portion 20b. The locking member 22 is stored in the third storage portion 20e so that the locking piece 22b can be moved forward and backward in the second storage portion 20b through the hole 20g.

  As shown in FIG. 3, the contact block 3 faces the front surface 90 where the contact surface 41 of the socket contact portion 4 is exposed to the front, and the memory card contact portion 5 is placed in the second storage portion. The contact block 3 is fixed to the base 20 by being housed in the first housing portion 20 a in a form advanced to 20 c and fitting the fitting protrusion 20 b into the fitting recess 9 a of the holding portion 9.

  A rectangular window portion 21a for exposing the contact block 3 is formed at a portion of the cover 21 corresponding to the first storage portion 20a. The window hole 21a is set to have a smaller dimension in the left-right direction than the contact block 3 so that the contact block 3 does not fall out of the window hole 21a. In addition, a fourth storage portion (not shown) that forms a storage space for the memory card 100 together with the second storage portion 20c is formed at a portion corresponding to the second storage portion 20c on the rear surface side of the cover 21. A second opening portion 21 b for inserting the memory card 100 into the fourth storage portion is formed at the end portion on the near side of 21.

  The above-described cover 21 is attached to the base 20 with the contact block 3 facing forward from the window hole 21a, and then welded to the base 20. When the cover 21 is attached to the base 20 in this way, the second storage portion 20c and the fourth storage portion constitute a storage space for the memory card 100, and the first opening 20d and the second storage portion. The opening 21b constitutes a card insertion slot 2a for inserting the memory card 100 into the storage space or withdrawing the memory card 100 from the storage space.

  By the way, when the memory card 100 is attached to the adapter body 2 between the memory card contact portion 5 and the card insertion slot 5a in the adapter body 2 (the cover 21 in this embodiment), as shown in FIG. Ribs 23 are formed to prevent the memory card 100 from contacting the end surface of the memory card contact portion 5 on the card insertion slot 2a side (that is, the front side opposite to the connection direction). Therefore, according to such a rib 23, when the memory card 100 is mounted, the memory card 100 contacts and collides with the end surface of the memory card contact portion 5 on the card insertion slot 2a side, so that the memory card contact portion 5 Can be prevented from bending (buckling).

  When the memory card 100 is attached to the adapter 1 described above, the memory card 100 may be inserted (stored) into the storage space through the card insertion slot 2a as shown in FIG. Are located at fixed positions, the respective terminals of the memory card 100 are electrically connected to the memory card contact portions 5 respectively.

  As a result, the socket contact portions 4A, 4B, 4J, and 4K corresponding to the data transmission terminals of the mini SD memory card are electrically connected to the data transmission terminals of the micro SD memory card, respectively. Socket contact portion 4C corresponding to the command terminal of the card is electrically connected to the command terminal of the micro SD memory card. Also, the socket contact portion 4G corresponding to the power supply terminal of the mini SD memory card is electrically connected to the power supply terminal of the micro SD memory card, and the socket contact corresponding to the clock terminal of the mini SD memory card. The contact portion 4H is electrically connected to the clock terminal of the micro SD memory card, and the socket contact portion 4I corresponding to the ground terminal of the mini SD memory card is electrically connected to the ground terminal of the micro SD memory card. Connected to. The socket contact portion 4D corresponding to the ground terminal of the mini-SD memory card is electrically connected to the ground terminal of the micro SD memory card through the short-circuit portion 7.

  When the memory card 100 is positioned at a fixed position with respect to the adapter 1, the engaging piece 22 b is engaged with the notch 110 of the memory card 100 so that the memory card 100 is unexpectedly detached from the memory card adapter 1. It is prevented.

  According to the adapter 1 of the present embodiment described above, the short-circuit portion 7 that electrically connects and short-circuits the socket contact portions 4 is integrated with the socket contact portion 4 from the end surface 40 on the connection direction side to the socket. Therefore, it is not necessary to newly provide a conductive member for short-circuiting the socket contact portion 4, so that the socket contact portion 4 can be short-circuited without increasing the number of components.

  In addition, since the front surfaces 7 a and 8 a of the short-circuit portion 7 and the peeling prevention portion 8 are located behind the contact surface 41 that is the front surface of the socket contact portion 4, the holding portion 9 is formed when the holding portion 9 is formed. Since it is difficult for the resin material to reach the contact surface 41 of the socket contact portion 4 through the short-circuit portion 7 or the peeling prevention portion 8, the contact surface 41 can be prevented from being covered with the resin material for forming the holding portion. A part of the short-circuit part 7 or the peeling prevention part 8 can be prevented from being exposed from the holding part 9, and as a result, the contact surface 41 of the socket contact part 4 can be exposed from the holding part 9 as designed. Thus, the socket contact portion 4 can be reliably connected to the socket terminals in a prescribed order.

  By the way, the short circuit part 7 in this invention is not restricted to the structure shown in said embodiment, For example, the rectangular parallelepiped projection part 73 as shown to Fig.9 (a) is provided in the front surface 7a by the part tapping etc. In this case, the resin material for forming the holding portion does not easily move to the end surface 40 side of the socket contact portion 4, and the contact surface 41 is covered with the resin material for forming the holding portion. This is further prevented. Note that the shape of the protrusion 73 is not limited to the example shown in FIG. 9A, and for example, the side surface as shown in FIG. Not. Further, the peeling prevention unit 8 may be provided with a projection (not shown) similar to the projection 73.

  In this embodiment, the memory card adapter used when connecting the micro SD memory card to the socket for the mini SD memory card is illustrated, but the present invention is not limited to this example. It may be a memory card adapter used when connecting an SD memory card to a socket for an SD memory card, and in short, a memory card adapter that needs to short-circuit non-adjacent socket contact portions 4 If it is.

(A) is a perspective view of the contact block of the adapter for memory cards of one Embodiment of this invention, (b) is an AA arrow directional view in the figure (a). It is a perspective view of the adapter for memory cards in the same as the above. It is a disassembled perspective view of the adapter for memory cards in the same as the above. It is explanatory drawing of the mounting method of the memory card to the adapter for memory cards in the same as the above. The conductive part of the contact block in the same as above is shown, (a) is a perspective view seen from the front, (b) is a perspective view seen from the rear. The conductive part of the contact block in the same as above is shown, (a) is a rear view, and (b) is a partially enlarged view of FIG. The contact block in the same as above is shown, (a) is a perspective view seen from the front, (b) is a perspective view seen from the rear. It is a fragmentary sectional view of the adapter for memory cards in the same as the above. It is a side view which shows the other example of the contact block in the same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Memory card 2 Adapter main body 2a Card insertion slot 3 Contact block 4, 4A-4k Socket contact part 5, 5A-5H Memory card contact part 6, 6A-6H Electrical connection part 7 Short-circuit part 7a Front (one end in thickness direction) Side surface)
8 peeling prevention part 8a front surface (surface on one end side in thickness direction)
DESCRIPTION OF SYMBOLS 9 Holding | maintenance part 23 Rib 40 End surface 41 Contact surface 50 Contact spring piece 70 Extension part 71 Connection part 71a Rolling part 100 Memory card

Claims (7)

A memory card adapter for use in electrically and mechanically connecting the memory card to a socket for a large memory card having an outer shape larger than that of the memory card,
An adapter body in which the memory card is inserted / removed through a card insertion slot formed in a box shape having the same size as the outer shape of the large memory card and opened on a side surface, and an electrical connection between the memory card and the socket housed in the adapter body Contact block used for connection,
The contact block includes a plurality of socket contact portions electrically connected to each of the plurality of terminals of the socket by a contact surface provided on one end side in the thickness direction orthogonal to the connection direction to the socket, and the memory card A plurality of memory card contact portions electrically connected to each of the plurality of terminals, and a short-circuit portion electrically connecting the socket contact portions based on the terminal arrangement of the memory card and the large memory card, respectively. A plurality of socket contact portions and a plurality of memory card contact portions formed by insert molding so as to expose the contact surfaces and the plurality of memory card contact portions of the plurality of socket contact portions and embed a short-circuit portion. And a holding portion for holding the short-circuit portion,
The plurality of memory card contact portions are electrically connected to the socket contact portions based on the terminal arrangement of the memory card and the large memory card,
The plurality of contact portions for the socket define the order of connection to the terminals of the socket when mounted on the socket by changing the position of the end surface on the connection direction side to the socket in the direction along the connection direction. And
The short-circuit portion is integrally extended from the end surface of the socket contact portion, and the one end side surface in the thickness direction is positioned on the other end side in the thickness direction with respect to the contact surface of the socket contact portion. An adapter for a memory card, comprising:   The short-circuit portion is configured to electrically connect the two socket contact portions, extends from each of the end surfaces of the two socket contact portions along the connection direction, and the position of the tip portion is aligned. The pair of extended portions are formed so that the longitudinal direction is the width direction orthogonal to the connection direction to the socket in a plane parallel to the contact surface of the socket contact portion. Each of the pair of extending portions is bent at a portion where the distance from the end surface of the socket contact portion is a predetermined value, and the connecting portion has a length of the pair of extending portions. 2. The memory card adapter according to claim 1, wherein a rolled portion is formed to maintain the shape of the connecting portion so as to be rolled in accordance with the difference in length and to have the width direction as a longitudinal direction.   3. The memory card adapter according to claim 1, wherein the short-circuit portion is embedded in the holding portion in a state where the short-circuit portion is bent so as to overlap the socket contact portion in the thickness direction.   A peeling prevention part embedded in the holding part is integrally projected on the end face of the socket contact part not provided with the short-circuit part, and the peeling prevention part is bent to the other end side in the thickness direction. The surface on one end side in the thickness direction is configured to be located on the other end side in the thickness direction with respect to the contact surface. Memory card adapter.   The contact portion for the memory card is provided with a contact spring piece to be in contact with the terminal of the memory card, and the contact spring piece is connected to the connection direction from the portion opposite to the connection direction side in the contact portion for the memory card. 5. The memory card adapter according to claim 1, wherein the memory card adapter extends toward the side.   6. The memory card adapter according to claim 5, wherein the contact spring piece is formed so as to approach the memory card housed in the adapter main body as it goes toward the connection direction.   A rib is formed between the memory card contact portion and the card insertion slot in the adapter body to prevent contact between the end face of the memory card contact portion on the card insertion slot side and the memory card. The memory card adapter according to any one of claims 1 to 6.

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