JP4461992B2 - Memory card connector - Google Patents

Description

  The present invention relates to a memory card connector, and more particularly to a memory card connector provided with a reverse mechanism in which a memory card is inserted upside down into a casing of the connector.

Conventionally, in this type of memory card connector, the casing of the connector comprises a U-shaped resin housing attached to a circuit board and a metal plate attached to the housing. In addition, a connection terminal pin is provided at the end of the casing in the card insertion direction, and a card contact side exposed surface portion and a circuit portion contact side protruding piece are formed at both ends of the connection terminal pin. Then, by inserting the memory card into the casing to the predetermined lock position, the terminal part of the memory card comes into contact with the exposed surface part of the connection terminal pin, and the terminal part and the circuit part are electrically connected to each other. (Patent Document 1).
JP 2004-127731 A

  In the invention described in Patent Document 1, since the card contact side exposed surface portion of the connection terminal pin arranged on the metal plate side is structurally unstable in support, it may be displaced to the card insertion area side in this case. However, when the card is inserted, the memory card collides with the exposed surface portion of the connection terminal pin and damages the connection terminal pin. In order to solve this problem, a special support member may be provided to increase the support force of the exposed surface portion of the connection terminal pin. However, in this case, the configuration becomes complicated and the cost increases.

  In addition, a memory card connector has been proposed in which the metal plate of the housing is directly attached to the circuit board in order to enhance the support stability of the card contact side exposed surface portion of the connection terminal pin. However, when the metal plate is attached to the circuit board, the metal plate may come into direct contact with the circuit portion of the circuit board to cause a short circuit. For this reason, the arrangement space of the circuit portion on the circuit board must be reduced. In order to solve this problem, a stand (foot) may be provided between the metal plate and the circuit portion. In this case, a dimensional loss occurs in the thickness direction.

  Therefore, there is a technical problem to be solved in order to prevent the connection terminal pins from being damaged and to ensure a wide circuit space on the circuit board without specially providing a support member. The present invention aims to solve this problem.

The present invention has been proposed to achieve the above object, and the invention according to claim 1 is characterized in that a connection terminal pin is provided at the inner end of the casing in the card insertion direction, and the casing is provided on the circuit board. a resin housing which is attached to a memory card connector comprising a metal plate which is applied to the housing,
The card contact side exposed surface portion of the connection terminal pin is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate, and the base end portion of the exposed surface portion In the memory card connector fixedly supported by the resin support part formed integrally with the housing ,
A memory card connector is provided in which the metal plate is provided with a positioning stopper for preventing displacement of the exposed surface portion of the connection terminal pin to the outside of the casing .

According to this configuration, when the terminal portion is disposed on the metal plate side and the memory card is inserted into the casing, the terminal portion of the memory card comes into contact with the card contact side exposed surface of the connection terminal pin and becomes conductive. To do. In this case, since the base end portion of the exposed surface portion is fixedly supported by a resin support portion formed integrally with the housing, the exposed surface portion is in a plane substantially the same as the plane of the metal plate. And stable. Thus, there is no fear that the tip of the exposed surface portion is displaced to a region where it interferes with the memory card.
Furthermore, according to this configuration, when the memory card terminal portion is pushed toward the outside of the casing by the terminal portion of the memory card during the insertion / extraction operation of the memory card, the stopper portion Prevents the exposed surface portion from being fixed at a regular position.

According to the second aspect of the present invention , a connection terminal pin is provided at the inner end of the casing in the card insertion direction, and the casing is made of a resin housing attached to the circuit board, and a metal plate attached to the housing. A memory card connector comprising:
The card contact side exposed surface portion of the connection terminal pin is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate, and the base end portion of the exposed surface portion In the memory card connector fixedly supported by the resin support part formed integrally with the housing,
The metal plate has an opening at the center in the width direction, and an exposed surface portion of the connection terminal pin is disposed in the opening .
Above metal plate, providing a memory card connector positioning stopper portion for preventing the displacement movement of the said casing outside the exposed surface portion of the connecting terminal pins are al provided.

According to this configuration, since the exposed surface portion of the connection terminal pin is disposed in the opening portion in the center portion in the width direction of the metal plate, a wide arrangement space of the exposed surface portion is ensured according to the width of the opening portion. Is done.
Furthermore, according to this configuration, when the memory card terminal portion is pushed toward the outside of the casing by the terminal portion of the memory card during the insertion / extraction operation of the memory card, the stopper portion Prevents the exposed surface portion from being fixed at a regular position.

According to a third aspect of the present invention , a connection terminal pin is provided at the inner end of the casing in the card insertion direction, and the casing is made of a resin housing attached to a circuit board, and a metal plate attached to the housing. A memory card connector comprising:
The card contact side exposed surface portion of the connection terminal pin is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate, and the base end portion of the exposed surface portion In the memory card connector fixedly supported by the resin support part formed integrally with the housing,
The metal plate has an opening at the center in the width direction, and an exposed surface portion of the connection terminal pin is disposed in the opening.
Furthermore, the base end portion of the projecting contact portion protruding portion on the circuit portion side of the connection terminal pin is formed in an L-shaped cross section, and the base end portion in the L-shaped cross section is formed integrally with the housing by a resin mold ,
And, in the metal plate, to provide a memory card connector positioning stopper portion is found provided for preventing the displacement movement of the said casing outside the exposed surface portion of the connecting terminal pins.

According to this structure, since the L-shaped base end of the cross section of the connection terminal pin on the circuit portion contact side protruding piece is formed in the housing by the resin mold, the base end of the protruding piece is formed by resin molding of the housing. At the same time formed.
Furthermore, according to this configuration, when the memory card terminal portion is pushed toward the outside of the casing by the terminal portion of the memory card during the insertion / extraction operation of the memory card, the stopper portion Prevents the exposed surface portion from being fixed at a regular position.

  According to the first aspect of the present invention, since there is no fear that the tip of the exposed surface portion of the memory card is displaced to an area where it interferes with the memory card, the terminal portion of the memory card is connected to the tip of the exposed surface portion of the connection terminal pin when the card is inserted. It is possible to prevent the connection terminal pin from being damaged by hitting the portion. In this case, it is not necessary to separately provide a support member for increasing the support force of the exposed surface portion of the connection terminal pin.

Further, since the metal plate of the casing does not directly contact the circuit board, there is no possibility that the metal plate contacts the circuit pattern portion of the circuit board and short-circuits. Therefore, a large area of the circuit pattern portion can be secured on the circuit board. In this case, there is no dimensional loss in the thickness direction of the metal plate, and there is an extraordinary effect that can reduce the thickness of the entire connector.
Further, according to this configuration, the metal plate is provided with the positioning stopper portion for preventing the movement, so that the exposed surface portion is not displaced to the outside of the casing during the card insertion / extraction operation, In addition to the above effect, the contact state between the terminal portion of the memory card and the exposed surface portion of the connection terminal pin is always stabilized, and the conduction state between the two is well maintained. .

In the invention according to claim 2, since the arrangement space of the exposed surface portion can be widened according to the width of the opening, in addition to the above effects, the assembly of the exposed surface portion is facilitated and the length of the exposed surface portion is increased. , The degree of design freedom such as the number increases. In particular, since the interval between the plurality of exposed surface portions can be increased, I be a phase 俟 to improve the support stability of the exposed surface portion, it can more reliably prevent a short circuit due to multiple exposure surface between mutually contacting, and,
Since the metal plate is provided with a positioning stopper for preventing movement, the exposed surface portion is not displaced outwardly from the casing during the card insertion / removal operation, and is fixedly held at a normal position. Therefore, in addition to the above-described effect, the contact state between the terminal portion of the memory card and the exposed surface portion of the connection terminal pin is always stabilized, and the usefulness of maintaining a good conduction state between the two is brought about.

In the invention according to claim 3, since the base end portion of the protruding piece portion of the terminal pin can be formed simultaneously with the resin molding of the housing, in addition to the above effects, the fixing and assembling work of the protruding portion with respect to the housing is easy. It can be done. In addition, the mounting strength or support stability of the protruding piece with respect to the housing is improved, so that problems such as rattling of the protruding piece due to vibration can be eliminated, and the metal plate is used for positioning to prevent movement. Since the stopper portion is provided, the exposed surface portion is not displaced outward from the casing during the card insertion / removal operation, and is fixed and held at a normal position. In addition to the above effects, the memory card The contact state between the terminal portion of the terminal and the exposed surface portion of the connection terminal pin is always stabilized, and an exceptional effect can be obtained in which the conduction state between the two can be favorably maintained.

  The present invention relates to a memory card in which a connection terminal pin is provided at a back end portion in a card insertion direction of a casing, and the casing includes a resin housing attached to a circuit board and a metal plate attached to the housing. In the connector, the exposed surface portion of the connection terminal pin on the card contact side is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate. The base end portion is fixedly supported by a resin support portion formed integrally with the housing, thereby preventing damage to the connection terminal pins without specially providing a support member for the connection terminal pins. The purpose of securing a wide circuit space on the circuit board was achieved.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a reverse type memory card connector, and an opening 4 for inserting and removing the memory card 3 is formed on the front surface of the casing 2 of the connector 1. The memory card 3 is a mini SD card, an xD picture card or the like used for information equipment such as a digital camera or a mobile phone.

  A recess 5 is formed on one end face in the width direction of the memory card 3, and a notch recess 6 is formed on the other end face in the width direction of the memory card 3. In addition, a plurality of terminal portions 7 are formed to extend in parallel to each other on the back side portion in the insertion direction S of the memory card 3.

  The casing 2 is formed of a resin housing 10 having a concave cross section attached to the surface of the circuit board 9 on the circuit pattern portion side, and a metal plate 11 attached to the housing 10. The back end surface portion of the housing 10 in the card insertion direction S is formed in a U-shaped cross section, and a plurality of connection terminal pins 12 are attached to the U-shaped end surface portion in parallel with each other.

  As shown in FIG. 1, the connection terminal pin 12 includes an intermediate portion 12a fixed to the end on the back side of the housing 10, and a protruding piece portion 12b having an L-shaped cross section connected to the substrate side end of the intermediate portion 12a. And an exposed surface portion 12c connected to the plate side end of the intermediate portion 12a. Further, the exposed surface portion 12 c of the connection terminal pin 12 is located in the same plane as the terminal portion of the metal plate 11. Further, the base end portion of the circuit contact side protruding piece 12b of the connection terminal pin 12 is formed in an L-shaped cross section, and the base end portion of the cross-sectional L shape is formed integrally with the housing 10 by a resin mold. Yes.

More specifically, as shown in FIG. 3, a U-shaped opening 11a in a plan view is formed in the center portion in the width direction of the metal plate 11, and the exposed surface portion 12c of the connection terminal pin 12 is formed in the opening recess 11a. It is arranged. The exposed surface portion 12c is arranged so as to come into contact with the memory card 3, but the end of the exposed surface portion 12c on the R side in the card ejection direction does not protrude toward the card insertion area. It is provided so that it may be immersed in the same plane as the shape plane. The base end portion of the exposed surface portion 12 c is supported by a resin support portion 8, and the support portion 8 is formed integrally with the housing 10.

  When the memory card 3 moves forward to the lock position, the terminal portion 7 of the memory card 3 comes into contact with the exposed surface portion 12c and becomes conductive. In addition, a plurality of positioning stoppers 14 are provided at the edge corresponding to the exposed surface portion 12c in the opening portion 11a of the metal plate 11, and the stopper portion 14 is provided on the outside of the casing 2 of the exposed surface portion 12c. Prevent displacement and fix position.

  As shown in FIG. 2, an engagement protrusion 13 that engages with the notch recess 6 of the memory card 3 is provided on the side of the metal plate 11. The engaging protrusion 13 engages with the notch recess 6 of the memory card 3 when the memory card 3 moves to the half-lock position, and prevents the memory card 3 from popping out when the card is removed.

  In addition, a resin holding rib 16 that is in contact with the back surface of the engaging protrusion 13 is integrally provided at a position corresponding to the engaging protrusion 13 on the inner wall of the housing 10. The holding rib 16 restricts the engagement protrusion 13 from moving outward when the memory card 3 is inserted and removed. When the card is taken out, the engagement protrusion 13 is engaged with the notch recess 6 of the memory card 3 to prevent the memory card 3 from popping out.

  A known heart cam mechanism is provided on the bottom surface of the housing 10, and the heart cam mechanism has a guide groove portion on which the sliding portion of the slider 17 slides. The slider 17 is always urged in the card discharge direction R by the return spring 15.

  A base end portion of a half lock spring 18 is attached to one end portion of the slider 17. The half lock spring 18 includes a leaf spring portion 19 fixed to the slider 17 and an engagement convex portion 20 connected to the tip end side of the leaf spring portion 19. Further, the engagement convex portion 20 of the half lock spring 18 engages with the concave portion 5 of the memory card 3 when the memory card 3 is inserted to the half lock position.

  An inclined rib 22 is provided on the inner wall of the housing 10 on the side facing the half lock spring 18 to prevent the card from popping out. The inner wall surface of the inclined rib 22 is gradually inclined toward the side away from the half lock spring 18 as it goes in the card insertion direction S. The inclined rib 22 intensifies the spring force of the leaf spring portion 19 by pressing against the leaf spring portion 19 when the card is taken out.

  Further, a card retaining rib 24 for preventing the card from being removed is provided in the inner part of the inner wall surface of the housing 10. The spring pressing rib 24 increases the spring force of the leaf spring portion 19 by abutting against and pressing the back surface of the leaf spring portion 19 when the card is locked.

  The spring pressing rib 24 and the inclined rib 22 are integrally formed with each other by a resin mold. In this case, the spring pressing ribs 24 and the inclined ribs 22 can be provided on the upper and lower steps where the upper and lower step surfaces are respectively provided. In addition, a guide portion that slides along the surfaces of the spring pressing rib 24 and the inclined rib 22 can be provided at the tip of the leaf spring portion 19 of the half lock spring 18.

  In the above configuration, as shown in FIG. 5, when the memory card 3 is inserted into the opening 4 of the casing 10 and moved to the half lock position, the half lock spring 18 is engaged with the recess 5 of the memory card 3. The memory card 3 is lightly held in the half-locked state by entering and engaging with the mating convex portion 20 (FIG. 6).

  Thereafter, when the memory card 3 is pushed forward, the slider 17 slides forward and reaches the front end in the card insertion direction once (FIG. 7). Thereafter, the slider 17 is slightly retracted, the guide pin engages with a cam locking portion (not shown), and the slider 17 stops. At this time, the half-locked memory card 3 is locked in a readable / writable state (FIG. 8).

  When the locked memory card 3 is taken out from the housing 10, the memory card 3 may be pushed further forward to release the lock (FIG. 9). Then, the slider 17 moves forward once and is unlocked.

  Thus, when the pressure on the memory card 3 is released, the slider 17 is pushed back by the urging force of the return spring 15. When the slider 17 moves backward to the half lock position, the memory card 3 is again held in the half lock state (FIG. 6).

  Further, when the half-locked memory card 3 is pulled forward, the engaging convex part 20 of the half-lock spring 18 is detached from the concave part 5 of the memory card 3 and the memory card 3 is pulled out from the opening part 4 of the casing 10. .

  In the above configuration, since the base end portion of the exposed surface portion 12 c of the connection terminal pin 12 is supported by the resin support portion 8 formed integrally with the housing 10, the exposed surface portion 12 c is a flat surface of the metal plate 11. Is stably held and arranged on the same plane side. Therefore, there is no possibility that the tip of the exposed surface portion 12c is displaced and moved toward the area where the memory card 3 can be interfered with.

  Further, since the tip of the exposed surface portion 12c of the memory card 3 does not move to an area that interferes with the memory card 3, when the card is inserted, the terminal portion 7 of the memory card 3 is connected to the connection terminal pin. It is possible to prevent the connection terminal pin 12 from being damaged by hitting the tip of the exposed surface portion 12c.

  Further, since the metal plate 11 of the casing 2 does not directly contact the circuit board 9 when the connector 1 is attached and used, it is possible to prevent the metal plate 11 from coming into contact with the circuit pattern portion of the circuit board 9 and short-circuiting. For this reason, the area of the circuit pattern portion on the circuit board 9 can be secured wider than in the past.

  According to the present embodiment, the exposed surface portion 12c of the connection terminal pin 12 is disposed in the opening portion 11a in the center portion in the width direction of the metal plate 11, so that the exposed surface portion 12c of the exposed surface portion 12c is set according to the width of the opening portion 11a. Arrangement space can be expanded.

  Therefore, not only the assembly of the exposed surface portion 12c is facilitated, but also the degree of freedom in design such as the length and number of the exposed surface portions 12c is increased. In particular, since the interval between the plurality of exposed surface portions 12c can be increased, a short circuit due to contact between adjacent exposed surface portions 12c can be prevented.

  Further, since the L-shaped base end portion of the protruding piece portion 12b of the connection terminal pin 12 is integrally formed with the housing 10 by resin molding, the base end portion of the protruding piece portion 12b can be formed simultaneously with the resin molding of the housing 10. . Accordingly, the fixing and assembling work of the protruding piece 12b with respect to the housing 10 is facilitated. In addition, the assembling strength or support stability of the protruding piece 12b is improved, and it is possible to suppress the occurrence of problems such as rattling in the protruding piece 12b.

Further, when the exposed surface portion 12c is pushed to the outside of the casing 2 by the terminal portion 7 of the memory card 3 during the card insertion / extraction operation, the positioning stopper portion prevents this, so that the exposed surface portion 12c is always fixedly held at the normal position. Therefore,
The surface contact state between the terminal portion 7 of the memory card 3 and the exposed surface portion 12c is stabilized, and the conduction state between the two is always kept good.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

The perspective view of the connector for memory cards which showed one embodiment of this invention and was fixed to the circuit board. The partial cross section figure which shows the state where the memory card was half-locked to the connector which concerns on one embodiment. The perspective view which shows the metal plate of the memory card based on one Embodiment. The state explanatory view showing the maximum time of card pushing of the connector for memory cards concerning one embodiment. The state explanatory view showing the connector for memory cards before card insertion concerning one embodiment. The state explanatory view showing the connector for memory cards of the half lock state concerning one embodiment. The state explanatory view showing the connector for memory cards at the time of card pushing maximum concerning one embodiment. The state explanatory view showing the memory card connector of the card lock state concerning one embodiment. The state explanatory view showing the connector for memory cards at the time of pushing in the card again concerning one embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector 2 Casing 3 Memory card 4 Opening part 5 Recessed part 6 Notch recessed part 7 Terminal part 8 Support part 9 Circuit board 10 Housing 11 Metal plate (shield plate)
12 connection terminal pin 12a intermediate part 12b circuit contact side protruding piece part 12c card contact side exposed surface part 13 engaging protrusion 14 positioning stopper part 15 return spring 16 holding rib 17 slider 18 half lock spring 19 leaf spring part 20 engaging protrusion Part 22 Inclined rib 24 Spring holding rib

Claims (3)

Connecting terminal pins is provided in the card insertion direction rear end of the casing, and, the casing comprises a resin housing which is attached to the circuit board, met connector memory card composed of a metal plate which is applied to the housing And
The card contact side exposed surface portion of the connection terminal pin is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate, and the base end portion of the exposed surface portion In the memory card connector fixedly supported by the resin support part formed integrally with the housing ,
A connector for a memory card, wherein the metal plate is provided with a positioning stopper for preventing displacement of the exposed surface portion of the connection terminal pin to the outside of the casing. A connection terminal pin is provided at the inner end of the casing in the card insertion direction, and the casing is a memory card connector comprising a resin housing attached to a circuit board and a metal plate attached to the housing. And
The card contact side exposed surface portion of the connection terminal pin is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate, and the base end portion of the exposed surface portion In the memory card connector fixedly supported by the resin support part formed integrally with the housing,
The metal plate has an opening at the center in the width direction, and an exposed surface portion of the connection terminal pin is disposed in the opening .
The above metal plate, connector memory card, wherein the positioning stopper is al provided for preventing the displacement movement of the said casing outside the exposed surface portion of the connecting terminal pins. A connection terminal pin is provided at the inner end of the casing in the card insertion direction, and the casing is a memory card connector comprising a resin housing attached to a circuit board and a metal plate attached to the housing. And
The card contact side exposed surface portion of the connection terminal pin is disposed so as to be in contact with the terminal portion of the memory card in a plane substantially the same as the plane of the metal plate, and the base end portion of the exposed surface portion In the memory card connector fixedly supported by the resin support part formed integrally with the housing,
The metal plate has an opening at the center in the width direction, and an exposed surface portion of the connection terminal pin is disposed in the opening.
Furthermore, the base end portion of the projecting contact portion protruding portion on the circuit portion side of the connection terminal pin is formed in an L-shaped cross section, and the base end portion in the L-shaped cross section is formed integrally with the housing by a resin mold ,
And, in the metal plate, connector memory card, wherein the positioning stopper for preventing the displacement movement of the said casing outside the exposed surface portion of the connecting terminal pins are al provided.

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