JP2005108761A - Card connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a card case in which the size of the case in the forward and backward direction is made short by making the thickness of a stopper formed at the rear end of the case as thin as possible, while enabling the reduction of a manufacturing cost. <P>SOLUTION: The case 10 which receives and holds a card 100 inserted from a card insertion hole 12 formed at the front in a card receiving space 14 inside the case 10 is constituted of a lower housing 20 made of an insulating material and an upper cover 40 made of sheet metal fitted above it. The lower housing 20 has a shape with an opening at the rear of the card receiving space 14, and the opening is covered with the rear wall 44 of the cover formed by bending downward the rear edge of the upper cover 40. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a card connector that is installed in an electronic device such as a mobile phone or a digital camera, and that receives and holds a memory card storing information and transmits signals to and from the electronic device.

  A dedicated card connector is used for exchanging information between a memory card (hereinafter referred to as a card) capable of storing a large amount of information and an electronic device, and various types of cards are used depending on the size of the card. Yes. Recently, electronic devices such as mobile phones and digital cameras have been reduced in size, and accordingly, card connectors have been reduced in size and weight. When the card connector is miniaturized, the mounting area of the electronic device on the board is reduced, and further miniaturization of the electronic device main body can be promoted.

By the way, in many conventional card connectors, a case for receiving and holding an inserted card is composed of a resin lower housing and a sheet metal upper cover attached to the upper portion of the lower housing, and is formed in front of the case. The card inserted from the inserted card insertion slot is positioned at the signal transmission position in the case (the position where the terminal on the card side contacts with the contact on the card connector side), or the card that is forcibly pushed into the case In order not to fall off from the rear portion, a wall portion serving as a stopper for abutting the leading end portion of the card is formed on the rear end portion of the lower housing so as to extend upward (see the following patent document). . When trying to reduce the size of the card connector, it is important to reduce the size in plan view in addition to the thickness direction of the card connector itself. It is preferable to reduce the front-rear dimension.
JP 2001-135383 A JP 2001-135424 A JP 2001-267013 A

  However, when the wall portion is provided at the rear portion of the lower housing as described above, there is a problem that a mold for forming the lower housing becomes complicated and costs increase. In addition, there is a limit due to the strength relationship even if the thickness of the wall part is made as small as possible (thinning), and it is necessary to maintain a certain thickness, so that the longitudinal dimension cannot be sufficiently reduced. was there.

  The present invention has been made in view of such problems, and while reducing the manufacturing cost, the thickness of the stopper to be formed at the rear end of the case is reduced as much as possible to reduce the size of the case in the front-rear direction. An object of the present invention is to provide a card connector having a configuration that can be realized.

  A card connector according to the present invention includes a lower housing made of an insulating material and a sheet metal upper cover attached to the upper portion of the lower housing, and is a card inserted from a card insertion slot formed at the front (for example, in the embodiment). A card connector comprising a case for receiving and holding a memory card 100) in a card receiving space formed therein, and a contact attached to the lower housing and contacting a terminal of the card received and held in the case The lower housing has a shape that opens the card receiving space rearward, and the open portion is covered by a cover rear wall formed by bending the rear edge of the upper cover downward.

  In the card connector according to the present invention, the lower housing has a shape that opens the card receiving space rearward (that is, penetrates in the front-rear direction), and the open portion is formed by bending the rear end edge of the upper cover downward. Covered by the rear wall of the formed cover part. For this reason, the shape of the lower housing is simplified as compared with the conventional configuration in which a wall portion extending upward is provided as a stopper at the rear portion of the lower housing, and therefore the mold for forming the lower housing is also simplified. Therefore, the manufacturing cost can be reduced. In addition, since the upper cover is made of sheet metal (made of metal), it can be provided with sufficient strength as a stopper to be formed at the rear end of the case even if the plate thickness is thin, and the thickness of the stopper is made smaller than before. Thus, the size of the case in the front-rear direction can be reduced.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a card connector 1 according to an embodiment of the present invention. In the present embodiment, for convenience of explanation, front and rear, left and right, and up and down directions are defined as shown in each drawing. The card connector 1 includes eleven signal transmission and ground contacts 61 and two card insertion detection switch pieces (a fixed switch piece 62 and a movable switch piece 63) in a rectangular case 10 in plan view. ), A card insertion slot 12 for inserting a memory card 100 to be described later is provided in front of the case 10, and a card receiving space 14 is formed inside. . Further, a card lock discharge mechanism 70 for locking the card 100 to a predetermined position in the case 10 and discharging it from the case 10 is provided in the left region in the case 10 (see FIG. 2).

  The case 10 includes a lower housing 20 and an upper cover 40 that is detachably attached to the upper portion of the lower housing 20. The lower housing 20 is made of an insulating material such as resin. The lower housing 20 has a bottom surface portion 22 having a rectangular lead portion extraction hole 21 (see FIG. 2) on the front side of the center portion, and a bottom surface portion. The left side wall 23 and the right side wall 24 that are formed to extend upward from the left and right sides of the bottom 22, and the low-profile rib 25 (see FIG. 2) that extends upward from the rear end portion of the bottom surface portion 22. ing. The rib 25 is for improving the bending rigidity of the bottom surface portion 22, and the housing 10 has a shape that opens to the rear in addition to the front and top (that is, penetrates in the front-rear direction). In addition, since members, such as a switch piece, are not attached to the left side wall 23 and the right side wall 24 of the said lower housing 20, the thickness is formed very thinly.

  The upper cover 40 is formed by punching a sheet metal member (metal thin plate member) into a predetermined shape and then bending it. The left and right side edges of the upper cover 40 are bent downward to form a cover part left side wall 41 and a cover part right side wall 42. As shown in FIG. 3, each of the cover left side wall 41 and the cover right side wall 42 is provided with a plurality of locking holes 43 a, and these locking holes 43 a are formed on the left and right side walls 23, 24 of the lower housing 20. The upper cover 40 can be attached to the lower housing 20 by being locked to a locking protrusion 26a provided on the outer side surface.

  A rear edge portion of the cover member 40 is bent downward to form a cover portion rear wall 44, and functions to increase the bending rigidity of the cover member 40 together with the cover portion left side wall 41 and the cover portion right side wall 42. . The rear wall 44 of the cover part is positioned vertically to the rear part of the lower housing 20 with the upper cover 40 attached to the lower housing 20, so that the opening part behind the lower housing 10 is closed. It has become. Locking holes 43b are provided at a plurality of locations on the cover rear wall 44. When the upper cover 40 is attached to the lower housing 20, the locking holes 43b are formed at the rear of the lower housing 20. The locking projection 26b is locked. Further, a locking piece 45 (see FIG. 3) is formed on each of the left and right sides of the rear wall 44 of the cover part, the lower end part of which is further bent forward of the case 10. A locking hole 43c is provided at the center of each of the locking pieces 45. When the upper cover 40 is attached to the lower housing 20, the locking holes 43c are located upward from the rear of the lower housing 20 in the locking holes 43c. The protruding locking projection 26c is locked (see FIG. 4). The card insertion slot 12 is formed as a region surrounded by the front end portion of the bottom surface portion 22 of the lower housing 20, the front end portions of the left and right side walls 23 and 24 of the lower housing 20, and the front end portion of the upper cover 40.

  As shown in FIG. 2, each contact 61 extends in the front-rear direction in the center of the lower housing 20 and is positioned in parallel with each other, and a fixing portion 61 a formed slightly forward of the middle portion is a bottom surface portion of the lower housing 20. 22 is fixed. In front of the fixed portion 61a, there is a lead portion 61b formed so as to be exposed from the lead portion take-out hole 21 of the lower housing 20 to the lower surface side of the lower housing 20, and behind the fixed portion 61a, there is a rear portion. And an elastic portion 61c formed to extend in a cantilevered manner. In addition, the rear end portion of the elastic portion 61c has a contact portion 61d that is bent so as to protrude upward.

  As shown in FIG. 5, a memory card 100 (hereinafter simply referred to as a card) 100 to be inserted into the card connector 1 includes a rectangular flat plate-shaped main body 110 made of an insulating material such as a resin, and the main body 110. It has eleven plate-like terminals 120, 120,... Attached to the back side (the front side in FIG. 5B). Each terminal 120 is connected by an IC chip (not shown) provided inside the main body 110 and a cable (not shown) wired in the main body 110. The card 100 is inserted into the case 10 of the card connector 1 in a posture in which the oblique side portion 111 formed on the left side of the main body 110 is positioned on the left side with respect to the insertion direction of the card 100 (to the card connector 1 of the card 100). The insertion direction is indicated by an arrow A in FIG. 1, FIG. 2 and FIG. When the card 100 is inserted into the case 10 through the card insertion slot 12 and is released when it can no longer be pushed into the case 10, the card 100 is placed in a predetermined position in the case 10 (a signal transmission possible position described later). In this state, the terminal 120 of the card 100 and the contact portion 61d of the contact 61 are in contact with each other, and the elastic portion 61c of the contact 61 is pressed by the terminal 120 and bent downward. It becomes.

  As shown in FIGS. 2, 6 and 7, the card lock discharge mechanism 70 includes a slider 71 attached to the left region of the lower housing 20 so as to be movable in the front-rear direction within the case 10 (within the lower housing 20). A return spring 79, which is contracted between the slider 71 and the cover rear wall 44 of the upper cover 40 and constantly urges the slider 71 forward of the case 10, and is connected in series in the front-rear direction to the left region of the case 10. The first cam mechanism 80 and the second cam mechanism 90 (see FIGS. 6 and 7) provided side by side are configured.

  As shown in FIGS. 8 and 9, the slider 71 has a first cam groove 81 constituting a part of the first cam mechanism 80 on the upper surface and a spring accommodating groove 72 having an arcuate cross section opened on the lower surface side. have. The front end portion of the return spring 79 contacts the contact portion 72a formed at the front end portion of the spring accommodating groove 72. Further, a rear end portion of a second cam rod 92 (see FIGS. 2, 6, and 7) constituting a part of the second cam mechanism 90 is rotatably supported on the front surface of the slider 71. The cam rod support hole 73 to be moved and a card fixing member 74 (see FIGS. 2, 6 and 7) for fixing the card 100 inserted into the case 10 to the slider 71 are slidable in the lateral direction of the slider 71. And a card-fixing member slide groove 75 to be supported.

  As described above, the slider 71 is always urged forward of the case 10 (in the card 100 ejection direction) by the return spring 79, and in a state where the card 100 is not inserted into the case 10, FIGS. As shown in (A), the front end surface 71 a is held in contact with the discharge-side slider stopper 27 formed in the left region of the lower housing 20 from the rear of the case 10. When the card 100 is inserted into the case 10, the oblique side portion 111 of the card 100 comes into contact with the oblique side portion 71 b of the slider 71 from the front, and when the card 100 is pushed into the case 10 as it is, the slider 71 becomes the oblique side of the card 100. Is slid backward in the case 10 by being pressed by the portion (that is, the left end side in the width direction of the card 100). When the stopper contact surface 71c formed on the slider 71 contacts the insertion-side slider stopper 28 formed on the lower housing 20 from the front, the card 100 is pushed in the case 10 at the limit position, and at the same time, the card 100 The terminal 120 and the contact 61 come into contact with each other, and the card 100 becomes a signal transmission capable position for signal transmission (information exchange) with an electronic device (not shown) via the card connector 1. Further, at the pushing limit position (signal transmission possible position) of the card 10, the end portion 112 a (see FIG. 5) of the groove 112 formed at the right end portion in the insertion direction of the card 100 is the right corner portion of the upper cover 40. A part located at the rear is cut out and bent inward to abut against the front end face 46a (see FIG. 3) of the card stopper 46 (see FIG. 10) from the front. For this reason, reaction force from the case 10 side acts on the left and right ends of the card 100 in a well-balanced position at the push-in limit position in the case 10 of the card 100, and even if the card 100 is pushed too much, There is no excessive force.

  The first cam mechanism 80 is a cam mechanism having a heart shape with a cam groove generally called a heart cam. The first cam groove 81 formed in the slider 71 and the rear end side are formed in the lower housing 20. The first cam rod 82 is rotatably supported by the cam rod support portion 29 and extends forward, and a bent portion 82 a formed on the front end side is positioned in the first cam groove 81. . The second cam mechanism 90 is also a heart cam having a heart-shaped cam groove, and the second cam groove 91 formed in the left front region of the bottom surface portion 22 of the lower housing 20 and the slider 71 described above on the rear end side. A second cam in which a bent portion 92a formed on the front end side is positioned in the second cam groove 91 so as to be rotatably supported in a cam rod support hole 73 formed in the front end portion of the front end portion. And a bar 92. As can be seen from FIG. 6, the first cam mechanism 80 and the second cam mechanism 90 are provided such that the first cam mechanism 80 is located behind the second cam mechanism 90. The first cam rod 82 constituting the first cam mechanism 80 is moved downward (into the first cam groove 81) by a cam rod retainer 47 formed to extend forward and downward at the left rear of the upper cover 40. The second cam rod 92 constituting the second cam mechanism 90 is held down (into the second cam groove 91) by the entire left front region of the upper cover 40.

  When the first cam mechanism 80 and the second cam mechanism 90 are inserted into the case 10 through the card insertion slot 12 and pushed into the back side of the case 10 (rear of the case 10), The slider 71, which is pressed by the left end portion (slope side portion 111) of the card 100 in the width direction and slides backward in the case 10, is locked near the push-in limit position of the card 100. To position. Further, when the card 100 is further pressed in the insertion direction of the card 10 (the back side of the case 10) from the state where the signal can be transmitted, the lock holding of the slider 71 is released.

  FIG. 11 shows the planar shape and vertical concavo-convex shape of the first cam groove 81 formed in the slider 71, and the planar shape and vertical concavo-convex shape of the second cam groove 91 formed in the lower housing 20. Show. In FIGS. 11A and 11B, the right side of the paper corresponds to the right side of the case 10, and the left side of the paper surface corresponds to the left side of the case 10. Therefore, the direction from the bottom of the page to the top of the page corresponds to the insertion direction of the card 100, and the direction from the top to the bottom of the page corresponds to the discharge direction of the card 100.

  As shown in FIG. 11A, the first cam groove 81 formed in the slider 71 includes a first slide groove A to B and a second slide groove B to C to D that extend forward from the rear of the slider 71. E, third slide grooves E to F to G extending from the front end E of the second slide grooves B to C to E to the rear left of the slider 71, and the rear of the third slide grooves E to F to G Fourth slide grooves G to H to I extending from the end G to the left front of the slider 71 and first slide grooves A to H extending from the front end I of the fourth slide grooves G to H I to the rear of the slider 71. And fifth slide grooves I to J connected to the front end B of B. As shown in FIG. 11B, the second cam groove 91 formed in the lower housing 20 includes a first slide groove AB and a second slide groove B˜ that extend rearward from the front of the lower housing 20. C to D to E, third slide grooves E to F to G extending from the rear end E of the second slide grooves B to C to D to the front right side of the slider 71, and the third slide grooves E to F The fourth slide grooves G to H to I extending from the front end G to the rear right of the slider 71, and the first slide grooves G to H to the front of the slider 71 from the rear end I of the fourth slide grooves G to H to I. It consists of fifth slide grooves I to J connected to the rear end B of the slide grooves A to B.

  The graph of FIG. 11C shows the cross-sectional shape of the slider 71 obtained by cutting points A, B,..., J indicated by alphabets in FIG. 11D shows a lower housing in which the points A, B,..., J indicated by alphabets in FIG. 11B are cut along a line connecting A → B →. 20 cross-sectional shapes are shown. As can be seen from these drawings, steps D, F, H, and J of both the first cam groove 81 and the second cam groove 92 are provided with steps, and are located in the first cam groove 81. The bent portion 82a of the first cam rod 82 and the bent portion 92a of the second cam rod 92 located in the second cam groove 91 are C → D → E, E → F → G, and G → H → I, respectively. , It can move in the direction of I → J → A, but cannot move in the opposite direction. Therefore, when the slider 71 reciprocates in the front-rear direction of the case 10 (the vertical direction of the paper surface in FIG. 11), which is the insertion / extraction direction of the card 100, the bent portion 82a of the first cam rod 82 is the first cam groove. 81 is always moved in the order of A → B →... → J → A, and the bent portion 92a of the second cam rod 92 is always moved in the second cam groove 91 in the order of A → B →. To do. Here, when the slider 71 moves in the front-rear direction in the case 10, the bent portion 82a of the first cam bar 82 and the bent portion 92a of the second cam rod 92 are respectively in the corresponding cam grooves 81, 91. (For example, when the bent portion 82a of the first cam bar 82 is positioned on the point E in the first cam groove 81, the second cam The bent portion 92 of the cam bar 92 is located on the point E in the second cam groove 91).

  2, 6, and 7, the card fixing member 74 is provided so as to be movable in the lateral direction (left and right direction) of the case 10 within the card fixing member slide groove 75 formed on the upper surface of the slider 71. ing. The card fixing member 74 has a card fixing protrusion 74a that protrudes to the right and extends, and a guide protrusion 74b that protrudes and extends upward (see FIGS. 2, 6, 7, etc.). It is located in an inverted “<”-shaped guide groove 48 formed in the left region of the upper cover 40 (see FIGS. 1, 10, and 12). Here, the guide groove 48 is configured to move the guide protrusion 74b in the direction of the rear of the case 10 and in the vicinity of the card 100 as the slider 71 moves rearward due to the insertion of the card 100 into the case 10. Is formed. The card fixing member 74 is preferably made of a metal material in terms of strength.

  The guide protrusion 74b of the card fixing member 74 is in a state where the card 100 is not pushed into the case 10 and the slider 71 is positioned at the foremost position in the case 10 (the front end surface 71a of the slider 71 is the lower housing 20). In the state of being in contact with the discharge-side slider stopper 27), the guide groove 48 is positioned at the foremost position (see FIG. 12A). At this time, the card fixing member 74 is a slide for the card fixing member of the slider 71. Located on the left side in the groove 75, the card fixing protrusion 74a is located at a position away from a recess 113 (see also FIG. 5) provided on the left side of the card 100 (see FIG. 6A). . When the card 100 is pushed into the case 10 and the slider 71 moves rearward of the case 10, the guide protrusion 74b is guided by the guide groove 48 and moves rearward and rightward of the case 10 (FIG. 12B). The card fixing member 74 moves to the right in the card fixing member slide groove 75 of the slider 71, and the card fixing protrusion 74a is inserted into the recess 113 of the card 100 from the left (see FIG. B)).

  As shown in FIGS. 2 and 6, the fixed switch piece 62 and the movable switch piece 63 are provided in the left region of the bottom surface portion 22 of the lower housing 20 so as to extend in the front-rear direction in parallel with the contacts 61. The fixed portions 62 a and 63 a (see FIG. 13) on the side are fixed to the bottom surface portion 22 of the lower housing 20. A front portion of the fixed portion 62a of the fixed switch piece 62 has a lead portion 62b extending from the lead portion extraction hole 21 of the lower housing 20 so as to be exposed to the lower surface side of the lower housing 20, and a rear portion of the fixed portion 62a. Has an elastic part 62c extending rearward in a cantilever manner. A rear end portion of the elastic portion 62c has a bent portion 62d provided by being inverted and bent upward from below, and is formed at the left end portion of the bent portion 62d so as to extend to the left of the case 10. A contact 62e is provided. Further, the front portion of the fixed portion 63a of the movable switch piece 63 has a lead portion 63b extending from the lead portion extraction hole 21 of the lower housing 20 so as to be exposed on the lower surface side of the lower housing 20, and the fixed portion 63a. The rear part has an elastic part 63c that extends rearward in a cantilevered manner. The elastic portion 63c has a pressed portion 63d that is bent upward at the rear end portion, and a contact 62e that protrudes upward is provided in the vicinity of the pressed portion 63d in the elastic portion 63c ( (See FIG. 13).

  In the movable switch piece 63, when the card 100 is not inserted to the signal transmission possible position in the case 10, the pressed portion 63d is not pressed by the tip portion of the card 100 and is not elastically deformed downward. Hold the posture. At this time, the contact 63e of the movable switch piece 63 and the contact 62e of the fixed switch piece 62 are in contact with each other (see FIG. 14A). On the other hand, when the card 100 is inserted to the signal transmitting position in the case 10, the pressed portion 63 d of the movable switch piece 63 is pressed downward by the rear right end surface 71 d (see FIGS. 8 and 9) of the slider 71. The At this time, the elastic portion 63c of the movable switch piece 63 is elastically deformed and bent downward, whereby the contact 63e of the movable switch piece 63 is separated from the contact 62e of the fixed switch piece 62 (see FIG. 14B).

  The card connector 1 is attached on a substrate of an electronic device (not shown). When mounting on the substrate, a positioning hole (not shown) is provided with a positioning protrusion 30 (see FIGS. 1, 7, and 10) formed to project downward from the lower surface of the lower housing 20 and extend. The lower housing 20 is positioned on the board so as to be fitted into the board from above, and cover fixing pieces 49 and 50 (see FIGS. 1 and 3 etc.) formed on the left and right ends of the cover member 40 are on the board. It is fixed at a predetermined place. The lead 61b of each contact 61 is fixed to a predetermined position of a signal or ground wiring pattern (not shown) formed on the substrate by solder or the like, and the lead 62b of the fixed switch piece 62 and the movable switch piece. The lead portions 63b of 63 are fixed to predetermined positions of a wiring pattern (not shown) for a card insertion detection circuit formed on the substrate by soldering or the like. The wiring pattern for the card insertion detection circuit formed on the substrate constitutes a part of the card insertion detection circuit CC (see FIG. 13B).

  The card insertion detection circuit CC detects the insertion of the card 100 into the case 10 based on whether or not the fixed switch piece 62 (the contact 62e) and the movable switch piece 63 (the contact 63e) are in contact. I do. That is, the card 100 is placed inside the case 10 by a signal output when the fixed switch piece 62 and the movable switch piece 63 are in contact with each other and a signal output when the switch pieces 62 and 63 are not in contact with each other. It is detected whether or not it is inserted. Specifically, the non-insertion state of the card 100 is detected based on a signal output when the fixed switch piece 62 and the movable switch piece 63 are in a contact state, and the switch pieces 62 and 63 are in a non-contact state. The insertion state of the card 100 is detected on the basis of a signal output when it is in the position (so-called B contact type switch structure).

  Next, after the card 100 is inserted into the card connector 1, the operation of each part of the card connector 1 after the signal transmission between the card 100 and the electronic device is completed and the card 100 is pulled out from the card connector 1. Will be explained.

  To insert the card 100 into the card connector 1, first, the card 100 is inserted into the case 10 through the card insertion slot 12 provided in front of the case 10. When the card 100 is inserted from the card insertion slot 12, the oblique side portion 111 formed at the left end in the width direction of the card 100 comes into contact with the oblique side portion 71b of the slider 71 from the front (see FIG. 6A). At this time, the protrusion 51a of the locking piece 51 provided on the right side of the upper cover 40 and extending inward of the case 10 is fitted into a recess 114 (see FIG. 5) provided on the right side of the card 100. Click sound is generated.

  When the card 100 is further pushed into the case 10, the slider 71 pressed by the card 100 slides in the insertion direction of the card 100 (rear of the case 10). Accordingly, the bent portion 82a of the first cam rod 82 moves in the first slide grooves A to B and the second slide grooves B to C to E of the first cam groove 81 in this direction, and the second The bent portion 92a of the cam bar 92 moves in this direction in the first slide grooves A to B and the second slide grooves B to C to E of the second cam groove 91. Note that, as described above, the point J that is the junction of the fifth slide grooves I to J and the first slide grooves A to B in the first cam groove 81 and the fifth slide grooves I to F in the second cam groove 91. Since the step J is provided with a step at each of the junction points of J and the first slide grooves A to B, when the card 100 is pushed rearward of the case 10, the bent portion of the first cam rod 82 is provided. 82a does not advance from A → J → I, and the bent portion 92a of the second cam bar 92 also does not advance from A → J → I (both of which always proceeds from A → B → C).

  With the pressing of the slider 71 by the card 100, the bent portion 82a of the first cam rod 82 reaches the point E in the first cam groove 81, and at the same time, the bent portion 92a of the second cam rod 92 is moved. When the point E in the second cam groove 91 is reached, the stopper contact surface 71 c of the slider 71 contacts the insertion side slider stopper 28 of the lower housing 20 from the front of the case 10. As a result, the card 100 reaches the push-in limit position in the case 10, and the card 100 cannot be pushed into the back (back side) of the case 10 beyond that. Further, at the push-in limit position of the card 100, the terminal 120 of the card 100 and the contact 61 are in contact with each other. Even when the slider 71 is not pushed in by the insertion-side slider stopper 28 for some reason, the cover portion rear wall 44 is formed by bending the rear edge of the upper cover 40 downward at the rear portion of the case 10. Is located, and thus the push-in restriction is applied, so that there is no possibility that the card 100 is pulled out to the back of the case 10 as it is, and the card 100 is lost.

  When the stopper contact surface 71c of the slider 71 contacts the insertion-side slider stopper 28 of the lower housing 20 and the card 100 cannot be pushed further, the card 100 is released from the hand. As a result, the slider 71 receives a biasing force from the return spring 79 and slides a little toward the front of the case 10 (in the card 100 ejection direction). At this time, the bent portion 82a of the first cam rod 82 is moved to the first cam. After moving in this direction in the third slide grooves E to F to G of the groove 81, it stops when reaching the point G, and the bent portion 92a of the second cam bar 92 is the second cam groove 91. After moving in the three slide grooves E to F to G in this direction and stopping at the point G, the slider 71 is locked at that position (see FIG. 6B). This is because the bent portion 82 a of the first cam rod 82 is positioned at the point G in the first cam groove 81, and the bent portion 92 a of the second cam rod 92 is located at the point G in the second cam rod 91. In the state where the slider 71 is positioned, the slider 71 is urged forward of the case 10 by the return spring 79 (the ejection direction of the card 100), while the slider 71 is driven by the first cam rod 82 and the second cam rod 92. This is because the forward movement of the case 10 is prevented. Since the step D is provided at the point D on the first cam groove 81 and the point D on the second cam groove 91 as described above, the first step when the hand is released from the card 100. The bent portion 82a of the cam rod 82 does not advance in the first cam groove 81 in the order of E → D → C, and the bent portion 92a of the second cam rod 92 moves in the second cam groove 91 from E → D → It does not proceed with C (both proceed with E → F → G together).

  Here, after releasing the hand from the card 100 as described above, the card 100 inserted into the case 10 is moved to the front of the case 10 as the slider 71 moves slightly forward of the case 10 (the discharging direction of the card 100). ) And a wiping effect is produced between the contact 61 and the terminal 120, so that contact failure due to dust, dust, etc. adhering to the contact 61 or the terminal 120 is prevented. Further, even if the slider 71 moves slightly forward in the case 10 as described above, the terminal 120 of the card 100 and the contact 61 are kept in contact (the card 100 continues to be positioned at a signal transmission possible position).

  Further, when the card 100 is inserted into the case 10 and the slider 71 pressed by the card 100 moves to the rear of the case 10, the card fixing member 74 provided on the slider 71 accordingly moves rearward and rightward of the case 10. As described above, the card fixing protrusion 74a is inserted into the hollow portion 113 of the card 100 from the left side (see FIG. 6B). For this reason, the card 100 is fixed to the slider 71 at least when the card 100 is positioned at a signal transmitting position.

  Further, when the card 100 is received and held in the card receiving space 14 as described above and is located at the signal transmission position, the movable switch piece 63 provided on the bottom surface portion 22 of the lower housing 20 is located at the right rear side of the slider 71. The contact 63e of the movable switch piece 63 and the contact 62e of the fixed switch piece 62 that have been in contact with each other until they are pressed downward by the distal end surface 71d and elastically bent (see FIGS. 6B and 14B). And the fixed switch piece 62 and the movable switch piece 63 are in a non-contact state. Thereby, it is detected in the card insertion detection circuit CC that the card 100 has been inserted up to a signal transmission possible position, and signal transmission is started between the card 100 and the electronic device via the card connector 1.

  When signal transmission between the card 100 and the electronic device is completed, the card 100 is ejected from the card connector 1. The card 100 is ejected by pressing the card 100 rearward of the case 10 (in the insertion direction of the card 100), whereby the slider 71 moves backward in the case 10 against the urging force of the return spring 79. Therefore, the bent portion 82a of the first cam rod 82 moves in the fourth slide grooves G to H in the first cam groove 81 in this direction, and the bent portion of the second cam rod 92 is moved. 92a moves the fourth slide grooves GH to I in the second cam groove 91 in this direction (this releases the lock at the lock position of the slider 71). When the bent portion 82a of the first cam rod 82 reaches the point I, and at the same time the bent portion 92a of the second cam rod 92 reaches the point I, the stopper contact surface 71c of the slider 71 is at the lower part. It contacts the insertion side slider stopper 28 of the housing 20 from the front of the case 10. As a result, the card 100 reaches the push-in limit position in the case 10, and the card 100 cannot be pushed into the back (back side) of the case 10 beyond that. Since the step F is provided at the point F on the first cam groove 81 and the point F on the second cam groove 91 as described above, the first cam is pressed by the rearward pressing of the card 100. The bent portion 82a of the rod 82 does not advance in the first cam groove 81 from G → H → F, and the bent portion 92a of the second cam rod 92 moves in the second cam groove 91 from G → H → F. (In both cases, the process always proceeds as F → H → I).

  When the stopper contact surface 71c of the slider 71 comes into contact with the insertion-side slider stopper 28 of the lower housing 20 and the card 100 can no longer be pushed in, the card 100 is released. As a result, the slider 71 receives the urging force of the return spring 79 and slides forward of the case 10 (in the card 100 ejection direction), and accordingly, the bent portion 82a of the first cam bar 82 is formed in the first cam groove 81. The fifth slide grooves I to J are moved in this direction, and the first slide grooves A to B are moved in a direction opposite to this direction. At the same time, the bent portion 92a of the second cam bar 92 moves the fifth slide grooves I to J of the second cam groove 91 in this direction, and further moves the first slide grooves A to B to this direction. Moves in the opposite direction. The slider 71 then stops when its front end surface 71 a abuts against the discharge-side slider stopper 27 of the case 10 from the rear, and returns to the initial position before the card 100 is inserted into the case 10. That is, the card 100 is discharged from the case 10. In this state, since the protrusion 51a of the locking piece 51 formed on the upper cover 40 is fitted into the recess 114 provided on the right side of the card 100, the card 100 is inserted from the card insertion slot 12 to the outside of the case 10. Never jump out.

  When the slider 71 is unlocked by the cam mechanisms (the first cam mechanism 80 and the second cam mechanism 90) as described above, the slider 71 biased by the return spring 79 moves to the front of the case 10. The guide protrusion 74b of the card fixing member 74 provided on the slider 71 is guided by the guide groove 48 and moves rearward and leftward of the case 10 (see FIG. 12A). It moves leftward inside the card fixing member slide groove 75. Therefore, the card fixing protrusion 74a is detached from the inside of the recess 113 of the card 100 (see FIG. 6A), and the card 100 can be pulled out from the case 10 in the above state where the card 100 is ejected from the case 10. It becomes.

  The configuration of the card connector 1 is as described above. In the card connector 1, as described above, the lower housing 20 has a shape that opens the card receiving space 14 rearward (that is, penetrates in the front-rear direction). The open portion is covered with a cover portion rear wall 44 formed by bending the rear end edge of the upper cover 40 downward. For this reason, the shape of the lower housing 20 is simplified as compared with the conventional configuration in which a wall portion extending upward is provided as a stopper at the rear portion of the lower housing, and therefore the mold for forming the lower housing 20 is also simple. Therefore, the manufacturing cost can be reduced. Further, since the upper cover 40 is made of sheet metal (made of metal), it can be provided with sufficient strength as a stopper to be formed at the rear end of the case 10 even if the plate thickness is thin, and the thickness of the stopper can be made larger than before. It is possible to reduce the size of the case 10 in the front-rear direction.

  Although the preferred embodiments of the present invention have been described so far, the present invention is not limited to those described in the above embodiments. For example, the form of the card in the above embodiment (the shape of the main body 110 of the card 100, the number of terminals 120, etc.) is merely an example, and the card connector according to the present invention is described above according to the form of the target card. By using a shape or the like different from that of the embodiment, the configuration can be changed while maintaining the above effect.

It is a perspective view of the card connector concerning one embodiment of the present invention. It is a perspective view of a card connector in the state where an upper cover was removed. It is the perspective view which looked at the upper cover single-piece | unit from the downward direction. It is the fragmentary sectional view seen from arrow IV-IV in FIG. (A) is a perspective view of a card | curd, (B) is a back view of a card | curd. It is a figure which shows the card connector of the state which removed the upper cover with the card | curd, (A) shows the state before inserting a card in a card connector, (B) shows the state which inserted the card in the card connector, respectively. Yes. It is a perspective view which shows the card connector of the state which removed the upper cover with the mounted | worn card. (A) is a plan view of the slider alone, (B) is a back view of the slider alone, and (C) is a back view of the slider alone. (A), (B) is a perspective view of a slider alone. It is a perspective view which shows a card connector with the card | curd with which it mounted | wore. (A) is a diagram showing the planar shape of the first cam groove formed in the slider, (B) is a diagram showing the planar shape of the second cam groove formed in the lower housing, (C) is formed in the slider The figure which shows the uneven | corrugated shape of the made 1st cam groove, (D) is a figure which shows the uneven | corrugated shape of the 2nd cam groove formed in the lower housing. It is a figure which shows a card connector with a card | curd, (A) has shown the state before inserting a card | curd in a card connector, (B) has shown the state which inserted the card | curd in the card connector, respectively. It is a perspective view of two switch pieces (fixed switch piece and movable switch piece) for card insertion detection, (A) is a figure showing both switch pieces, and (B) is a lower housing. FIG. It is a figure which shows the positional relationship of a fixed switch piece and a movable switch piece, (A) has shown a mode that the card | curd is not inserted to the signal transmission possible position, and both switch pieces are in a contact state, (B ) Shows a state in which the card is inserted to a position where signal transmission is possible and both switch pieces are in a non-contact state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Card connector 10 Case 12 Card insertion slot 20 Lower housing 26a, 26b, 26c Locking protrusion 40 Upper cover 41 Cover part left side wall 42 Cover part right side wall 43a, 43b, 43c Lock hole 44 Cover part rear wall 45 Locking piece 61 Contact 70 Card lock ejection mechanism 100 Memory card (card)
120 terminals

Claims (1)

It consists of a lower housing made of an insulating material and an upper cover made of sheet metal attached to the upper part of the lower housing. The card inserted from the card insertion slot formed in the front is received and held in the card receiving space formed inside. And a card connector configured to include a contact that is attached to the lower housing and contacts a terminal of the card received and held in the case.
The lower housing has a shape that opens the card receiving space rearward, and the open portion is covered by a cover rear wall formed by bending the rear edge of the upper cover downward. And card connector.

Images