JPH08236203A - Card connector - Google Patents

Abstract

PURPOSE: To allow an engaging protrusion provided on a lever composing an eject mechanism for card ejection not to damage the end face of a card when the engaging protrusion touches the end face of the card so as to push and rub mutually. CONSTITUTION: The object to be used of a card connector is a card for information processing. A plate piece portion 76 is formed on a lever by bending, and the engaging protrusion 75 of a curved shape is unitedly provided on the plate piece portion 76. The bending line 77 of the root portion of the plate piece portion 76 is made so as to be along the swinging path between the standing by position and the advanced position of the lever.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card connector, and more particularly to a card connector in which a card is ejected by swinging a lever of an eject mechanism.

[0002]

2. Description of the Related Art In a conventional card connector intended for use with various information processing cards such as IC cards, the operation of an eject mechanism for ejecting the card is performed via the swing of a lever. There are many things. As the configuration of the eject mechanism of this type of card connector,
Energy is stored in the spring when the card is inserted, and the energy of the spring is used to swing the lever to eject the card. There was one in which the card was swung to eject the card.

[0003]

FIG. 28 shows a card connector provided with an eject mechanism previously proposed by the present applicant. In the figure, 101 is a body made of electrically insulating synthetic resin, and a pin contact group 10 made up of a large number of pin contacts arranged in a row on this body 101.
3, the pair of left and right arm portions 102,
102 is equipped. Further, a metal frame 104 is attached to the body 101 in a state of covering it.
A predetermined portion of a lever 106 made of a metal plate is attached to the frame 104 via a support pin 105, and a tip portion of the lever 106 has a root portion perpendicular to the lever 106. Alternatively, the lever 1 is provided with an engaging protrusion 107 bent substantially at a right angle.
An operating portion 108 is provided at the other end of 06, and the operating portion 108 is connected to a push button operated by fingers of a hand or a spring body. In this card connector, the eject mechanism is constituted by the lever 106 having the engagement protrusion 107.

In the card connector provided with such an eject mechanism, as shown by an arrow A in FIG. 28, an information processing device such as an IC card is provided in a card insertion / removal path formed by a pair of left and right arm portions 102, 102. When the card C is inserted, the individual pin contacts of the pin contact group 103 are individually inserted into a large number of small holes (not shown) arranged in the end surface of the card C, and the contact group on the card C side (not shown) is inserted. ) And a group of pin contacts on the card connector side 10
3 is electrically connected to each other, and a signal can be exchanged between the card C and a device equipped with a card connector through the pin contact group 103.

When inserting the card C, the end surface C1 of the card C hits the engaging protrusion 107 of the lever 106 and then the engaging protrusion 107 is pushed, as can be inferred from FIG. Therefore, the lever 106 has the support pin 1
The mounting position by 05 is pivoted as a fulcrum as shown by an arrow B in the figure, and the lever 106 is retracted to the standby position shown in FIG. On the other hand, the lever 106 is moved from the standby position in FIG.
When it is swung in the forward direction indicated by the arrow D in FIG.
07 pushes the end surface C1 of the card C as indicated by the arrow E to advance the card, whereby the card C is ejected through the card insertion / ejection path formed by the pair of left and right arms 102, 102.

In such a card connector, as shown in FIG.
As can be seen from FIGS. 8 to 30, the engaging protrusion 107 was formed by simply bending the root portion of the protrusion extending from the lever 106 made of a metal plate-like member into a right angle or a substantially right angle. When the lever 106 moves backward along with the insertion of the card C or when the lever 106 moves forward when the card C is ejected, the lever 106 moves in an arc locus around the position of the support pin 105. Therefore, when the card C is inserted or ejected, the edge corners 109 of the engagement protrusion 107 may rub against the end face C1 of the card C while rubbing against each other to damage the end face C1. In some cases, the edge of the engagement protrusion 107 may be damaged. In some cases, the corner 109 is caught on the end surface C1 of the card C, so that the card C cannot be inserted or removed, and particularly the card C cannot be ejected smoothly.

Further, in the conventional card connector, since the bending line 110 at the base portion of the engaging projection 107 extends in the direction along the width direction of the end face C1 of the card C disposed in the card insertion / removal path, When the mating protrusion 107 is pressed against the card C when the card is inserted or removed, the engaging protrusion 107
However, there is a risk of bending deformation at the bending line 110.

In order to prevent the bending deformation of the engaging projection 107, it is effective to increase the width of the engaging projection 107 to lengthen the bending line 110 to increase the bending strength. The engaging protrusion 107 is the body 1
Since it is necessary to be able to move in a space that does not interfere with the pin contact group 103 arranged in line 01, the width of the engaging projection 107 is increased from this point and the bending line 110
There was a limit to how long. Also, the lever 106
It is also conceivable to increase the bending strength of the engagement protrusion 107 by increasing the thickness of the engagement protrusion 107, but doing so not only causes an increase in the weight of the card connector and a rise in the material cost. However, it is not preferable because it becomes an obstacle for achieving the thinning which is required recently for the card connector.

The present invention has been made under the above circumstances. When the card is inserted or removed, the engaging projection provided on the lever rubs against the end face of the card while rubbing the same, and the engaging projection of the card An object of the present invention is to provide a card connector whose end surface is not damaged.

Further, according to the present invention, even if the width of the engaging projection is not increased or the thickness of the lever or the engaging projection is not increased, a card having a sufficiently large bending strength can be imparted to the engaging projection. It is intended to provide a connector.

[0011]

In the card connector according to the present invention, an engaging projection is provided on a lever which can be swung about a predetermined position as a fulcrum, and the above-mentioned engagement is made on the end face of the card inserted through a predetermined path. The lever is swung from the forward position to the standby position by pushing the mating protrusion, and when the lever is swung from the standby position to the forward position, the engaging protrusion pushes the end face of the card and the card moves along the path. In the card connector to be pushed out, the lever is a plate-shaped body, and the lever is integrally provided with a plate piece portion whose root portion is bent at a right angle or substantially a right angle to the lever,
An engaging projection that is provided with an axis extending in the thickness direction of the card arranged in the path and that is bent and formed in a curved shape that protrudes in the card pushing direction is extended from the plate piece portion. is there.

In the card connector of this structure, the bending line of the base portion of the plate piece portion with respect to the lever is along the swing path between the standby position and the forward movement position of the lever, and the lever advancement in this plate piece portion is performed. It is desirable that one end edge portion in the bending direction of the engaging projection be smoothly connected to the position-side end edge.

[0013]

With the above construction, the engaging projection is formed in a curved shape, and the engaging projection of such a curved shape rubs against the end surface of the card when the card is inserted / removed. Is not scratched or the engaging projection is not caught on the end surface of the card. Further, in the case where the bending line of the root portion of the plate piece portion provided with the engaging projection is arranged along the swing path between the standby position and the forward position of the lever, the end surface of the card and the engaging projection are The force of pressing against each other is hard to be applied in the direction of bending the bending line.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The overall basic structure of a card connector according to an embodiment of the present invention is shown in FIGS. FIG. 1 is a schematic perspective view of the card connector seen from the upper surface side, and FIG. 2 is a schematic perspective view of the card connector seen from the lower surface side. 3 is a schematic plan view of an upper card connector unit U1 described later, and FIG. 27 is a vertical sectional side view of the card connector mounted on the wiring board.

As clearly shown in FIG. 27, this card connector is formed by vertically superimposing card connector units U1 and U2 having substantially the same structure so as to be rotationally symmetrical, and integrally connecting them. The cards C can be inserted into and removed from the respective card connector units U1 and U2 separately. Since these two card connector units U1 and U2 have substantially the same configuration, one card connector unit U1 will be mainly described in the following description.

As shown in FIG. 1, FIG. 2 and FIG. 27, in the upper card connector unit U1, the body 1 is provided with a large number of pin contacts 2 ... It is equipped with a pin contact group 3. As shown in FIG. 27, each pin contact 2 forming the pin contact group 3 has a terminal portion 9 penetrating the body 1 and extending rearward thereof. It is bent to and protrudes below the body 1. Further, the body 1 is integrally provided with a pair of left and right arm portions 4 and 5 extending forward thereof, and groove portions 7 and 8 are formed on the inner surface side of each of these arm portions 4 and 5. , The left and right edges of the card C are the groove portions 7,
By being guided by 8, the card is inserted or ejected through the card insertion / removal path between the pair of arms 4 and 5.

FIG. 20 is a rear view of the ground frames 11 and 12, the backup material 13, and the ground terminal 15 which are separately provided on the arm portions 4 and 5 of the upper and lower card connector units U1 and U2, respectively. 21 is a side view showing a main part of the ground frame 12 by the arrow XXI in FIG. 20, and FIG. 22 is an arm part 4 in which the rubber body 14, the ground frame 11 and the backup material 13 are assembled. 23 is an enlarged perspective view of the rubber body 14, and FIG. 24 is a ground terminal 15
Is a partial cross-sectional view showing a state in which is inserted into the insertion hole 17 of the wiring board 16, and FIG.
1 and U2 are vertical sectional front views showing the ground frames 11 and 12 and the ground terminals 15 assembled to the respective arm portions 5 and 5, and FIG. 26 is a plan view showing the shape of the insertion hole 17 of the wiring board 16. is there.

As shown in FIG. 23, the rubber body 14 is integrally formed on the flat seat portion 19 in a bulge shape. This rubber body 1
For example, silicone rubber having a high abrasion resistance and exhibiting a large frictional resistance can be suitably used as the material No. 4. Then, the seat portion 19 of the rubber body 14 is fitted into the dovetail-shaped engaging groove 18 formed in the arm portion 4 as shown in FIG. 22, and the rubber body 14 is slightly projected to the card insertion / removal path. . As shown in FIG. 1 and FIG. 2, the rubber body 14 is provided at a substantially central portion of the arm portion 4 in the longitudinal direction (front-back direction). The rubber bodies 14 are also arranged in symmetrical positions with respect to the other arm portions 5 (see FIGS. 1, 2, and 27).

The ground frame 11 shown on the upper side of FIG. 20 has mounting pieces 23, which are provided at the front and rear of a flat plate portion 22 having raised portions 21 formed by cutting and raising the back surface at two positions in the front-rear direction.
The flat plate portion 22 has a hanging portion 25 and an elastic piece portion 26 extending forward from the hanging portion 25 in the middle portion of the flat plate portion 22, and the tip of the elastic piece portion 26 is curved. The contact piece 27 is provided. As shown in FIGS. 22 and 25, the ground frame 11 is formed with the mounting piece portions 23 and 24 and the hanging portion 25 in a slit shape in each of the left and right arm portions 4 and 5 of the upper card connector unit U1. Frame holding grooves 28, 2
It is symmetrically attached to the arm portions 4 and 5 by being press-fitted or inserted into the armature 9. In this mounted state, the mounting piece 2
As shown in FIG. 25 with respect to No. 4, the locking claw 31 is locked in the frame holding groove 29 and is prevented from coming off. In this embodiment, the pair of left and right ground frames 11,
The flat plate portions 22, 22 of 11 are connected to each other by a connecting plate portion 32 which is integral with them. Therefore, the left and right arm portions 4 and 5 of the body 1 are configured so that their front ends, which are free ends, are connected by the connecting plate portion 32 and are not easily deformed.

Also in the ground frame 12 shown on the lower side of FIG. 20, the upper ground frame 1 described above is used.
Although the structure is substantially the same as that of 1, the connecting plate portion 32
Is not provided, the flat plate portion 36 is longer than the upper one, the long mounting piece portions 34 and 41 are provided at the front and rear of the flat plate portion 36, and the protruding portion is formed in the middle portion of the flat plate portion 36. It differs from the upper ground frame 11 in that it has a mounting piece portion 43 having a contact portion 42 (see FIG. 25) and an engaging claw 51. Other configurations are similar to those of the upper ground frame 11, 35 is a raised portion, 37
Is a rising portion corresponding to the hanging portion 25, 38 is an elastic piece portion that extends forward from the rising portion 37, and 39 is a curved contact piece portion 27. As can be inferred from FIG. 27, the ground frame 12 has the rising portions 37 together with the mounting pieces 34 and 41, and the arm portion 5 in the lower card connector unit U2 (other arm portions are not shown). The frame holding groove 44 (FIG.
5) and press fit or insert into the arm portion 5
Attached to. In this mounting state, the long mounting piece portions 34 and 41 are press-fitted into the frame holding groove 29 of the arm portion 5 of the upper card connector unit U1, and one mounting piece portion 34 is It is electrically connected to the mounting piece 23 of the upper ground frame 11 which is press-fitted into the frame holding groove 29 so as to overlap. In addition, the two mounting pieces 34, 41 are press-fitted into the frame holding groove 29 of the arm 5 of the upper card connector unit U1 so that their locking claws 45,
46 engages with the frame holding grooves 44 and 29, whereby the upper and lower card connector units U1 and U2 are connected by the engaging claws 45 and 46.

The upper and lower card connector units U
In the ground frames 11 and 12 assembled to the arm portions 4 and 5 of U1 and U2 as described above,
As illustrated in FIG. 2 for one of them, the columnar backup material 13 is sandwiched between the contact piece portion 27 and the arm portion 4. For the backup material 13, an elastic body having excellent elasticity and durability such as silicon rubber can be preferably used. By doing so, even if the elastic piece portion 26 that is elastically deformed in the inner and outer directions with respect to the card insertion / removal path is elastically deteriorated, the return position of the elastic piece portion 26 in the natural state (card uninserted state) is ensured. To a fixed position. Therefore, it is not necessary to use an expensive material for the elastic piece portion 26. With respect to the ground frame 12 as well, the elastic piece portion 38 is backed up by the backup material 13 with the same configuration.

The grounding terminal 15 shown in FIG. 20 integrally includes a connecting piece portion 48 having a locking hole 47, and the connecting piece portion 48 is provided on the arm portion 5 as shown in FIG. The claw 5 that is press-fitted into the terminal holding groove 49 attached to the frame holding groove 44 and is provided in the connecting piece portion 48 thereof.
4, 54 are engaged with the wall surfaces of the terminal holding groove 49 to prevent them from coming off. Further, the engaging claws 51 formed by cutting and raising the mounting piece portion 43 are locked in the engaging holes 47 of the connecting piece portion 48 to prevent the connecting piece portion 48 from coming off. Then, the connection piece portion 48 press-fitted in the terminal holding groove 49 is pressed against the contact portion 42 of the mounting piece portion 43 of the ground frame 12 press-fitted in the frame holding groove 44 in an overlapping state. Therefore, the ground frame 12 and the ground terminal 15 are electrically connected to each other.

As can be seen from FIGS. 20 and 24, the ground terminal 15 has a bifurcated soldering projection 52 on its connecting piece 48 and both sides of the soldering projection 52. A pair of projecting piece portions 53, 53 that are projected are integrally provided. Here, the soldering projecting piece 52 has a slit-shaped insertion hole 1 formed in the wiring board 16 as shown in FIG.
7 is a portion to be soldered M as shown by the phantom line in FIG. 24, and the protruding piece portions 53, 53 are
When the soldering projection 52 is inserted into the insertion hole 17, the solder projection 52 hits the plate surface of the wiring board 16 to control the amount of insertion of the projection 52. Further, the ground terminal 15 can change the press-fitting amount of the connecting piece portion 48 into the terminal holding groove 49 by changing the engaging position of the claw with respect to the groove wall surface of the terminal holding groove 49.
Therefore, the height position of the body 1 with respect to the wiring board 16, that is, the mounting height can be reliably determined only by determining the press-fitting amount of the connection piece portion 48 into the terminal holding groove 49.

In this embodiment, the ground terminal 15
Is formed of a metal plate material having a thickness larger than that of the metal plate material forming the above-mentioned ground frames 11 and 12. By doing so, a thin wall material is formed on the ground frames 11 and 12. Using the elastic piece 26,
While 38 has sufficient springiness, the ground terminal 15 is provided with sufficient rigidity to improve its self-sustaining property. FIG. 4 is an exploded perspective view of the eject mechanism 55.
As shown in FIG. 4 and FIGS. 1 to 3, the eject mechanism 55 includes a metal plate whose one end is swingably attached to a root portion of one arm portion 4 of the body 1 by a caulking pin 56. It has a first lever 57 which is a plate-shaped body. The first lever 57 has a length extending between the left and right arm portions 4 and 5, and has a spring receiving portion 58 provided at a free end portion thereof and a spring receiving portion provided at a front end of one arm portion 5. A spring body S1 made of a coil spring is provided between the portion 59 and the portion 59, and the spring body S1 allows the first lever 5 to move.
7 is always urged in the forward direction. Further, an engaging protrusion 61 for pushing out the card C at the initial stage of card ejection is provided at a position near the swing fulcrum (position of the crimping pin 56) in the first lever body 57. This engaging projection 61
Has a curved shape as shown in FIG. Further, a projecting piece 62 is provided at an intermediate portion of the first lever body 57. The operation of the protruding piece 62 will be described later.

A second lever 63, which is a plate-shaped body such as a metal plate, is superposed on the back side of the first lever 57, and the intermediate portions of the levers 57 and 63 are connected by a caulking pin 64 so as to be relatively swingable. Has been done. This second lever 63 is slightly shorter than the first lever 57, and the first lever 5
7, a spring receiving portion 65 provided at the base end portion on the side close to the swing fulcrum, and a spring receiving projection 66 provided at the rear end portion of the body 1.
A spring body S2 made up of a coil spring is provided between and, and the tip end portion of the second lever 63 is constantly urged in the forward direction by the spring body S2. In addition, the second lever body 6
3, an engaging portion 67 corresponding to the projecting piece 62 of the first lever body 57 is provided at a position close to the swing fulcrum (position of the caulking pin 64), and further, at the tip end portion of the second lever 63. The protruding piece 68 is formed in a stepped shape, and the protruding piece 6 is formed.
8 and the first lever 57, a predetermined gap 69 is formed (see FIGS. 16 and 17).

As shown in FIG. 4, an engaging portion 71 is formed near the free end portion of the first lever 57 so as to project to the back side thereof. As shown in FIGS. 16 and 17, the engagement portion 71 has a guide surface 7 whose back surface is inclined forward and downward.
It is said to be 2. On the other hand, the second lever 63 has an engagement hole 73. Then, when the tip end portion of the second lever 63 is relatively swung from the rear of the free end portion of the first lever 57 to the back side of the free end portion, the tip end portion of the second lever 63 is After sliding on the guide surface 72, the engaging portion 71 is fitted in the engaging hole 73. When both are fitted, the spring body S1,
The engaging portion 71 and the front end side 74 of the engaging hole 73 are engaged with each other in a pressed state by the urging force of S2.
FIG. 16 shows a state in which both are engaged.

FIG. 12 is an enlarged view of the engagement protrusion 75 provided in the engagement hole 73. This engaging projection 75
Has a function of being pushed by the end surface C1 of the card C when the card C is inserted into the card insertion / removal path and hitting the end surface C1 of the card C and ejecting the card C rearward when the card is ejected. The engagement protrusion 75 is integrally provided with a plate piece portion 76 that is integral with the second lever 63 and has a root portion bent at a right angle or substantially a right angle with respect to the second lever 63. The engagement protrusion 75 has an axis C2 extending in the thickness direction (indicated by arrow t in FIG. 12) of the card C disposed in the card insertion / removal path, and in the card pushing direction (direction opposite to arrow A). It is bent and formed in a protruding curved shape, specifically, an arc shape. The bending line 77 at the base of the plate piece 76 with respect to the second lever 63 is a swing path between the standby position and the forward position of the second lever 63 (indicated by arrow L1 in FIG. (Indicated by arrow L2)
Is along. The one end edge portion of the engaging projection 75 in the bending direction is smoothly connected to the end edge 78 of the plate piece portion 76 on the second lever advance position side.

The eject mechanism 55 is provided with an engagement releasing mechanism 81 for releasing the engagement state between the engaging portion 71 and the front end side 74 of the engaging hole 73.

FIG. 15 is a perspective view of the engagement releasing mechanism 81, FIG.
6 and 17 are operation explanatory views of the engagement releasing mechanism 81.
The engagement releasing mechanism 81 includes a slide guide 82, a movable rod (engagement releasing member) 83 that is guided by the slide guide 82 to move forward and backward, and a spring body 84 formed of a coil spring.
The slide guide 82 and the movable rod 83 are both manufactured by processing a metal plate. The slide guide 82 includes a face plate portion 85 and the face plate portion 85.
The pressing plate portion 86 having a spring property that is formed by folding back on the outside of the
2 and an attachment portion 87 provided on the face plate portion 85. By inserting the attachment portion 87 into the attachment groove 88 provided on the arm portion 5 as shown in FIG. Is held. In FIG. 15, reference numeral 89 is a retaining claw for retaining. On the other hand, the movable rod 83 has a rear end portion formed as an inclined edge 91, and a mounting piece portion 93 having a screw hole 92 at the front end portion is formed in an outward folded shape, and
A wide portion 94 is provided in the middle portion, and a spring receiving portion 95 is cut and raised in the wide portion 94. This movable rod 83
The wide portion 94 is slidably held in the front-rear direction by a groove portion (not shown) formed in the outer surface side of the arm portion 5 and extending in the front-rear direction, and the rear end portion thereof is a face plate portion 85 of the slide guide 82. It is slidably sandwiched between the holding plate portion 86 and the holding plate portion 86. Then, as can be seen from FIGS. 2 and 3, the spring body 84 is replaced by the spring bearing portion 95 of the movable rod 83.
And the spring receiving portion 96 provided on the arm portion 5, and the movable rod 83 is always biased rearward by the spring body 84. Further, the sharp rear end portion 97 of the movable rod 83 has a gap 6 between the first lever 57 and the protruding piece 68 of the second lever 63, as can be seen in FIGS. 16 and 17.
9 is facing.

FIG. 18 is a plan view of the disengagement member of the disengagement mechanism 81, that is, a structure for operating the movable rod 83 as seen from below, and FIG. 19 is an explanatory view of the same structure.

In FIG. 19, 201 is a shape memory wire (memory wire).
The contraction mode and the expansion mode are switched by the temperature change accompanying the switching between the energized state and the non-energized state, and in the contraction mode, the length is shortened to the length stored in advance,
The decompression mode has the property of increasing the length up to the length stored in advance. Reference numeral 202 denotes a first terminal, and the first terminal 202 integrally has a ring-shaped stop portion 203 and a crimp type connection portion 204. And
One end of the shape memory wire 201 and an end of a lead wire 205 for energizing the shape memory wire 201 are caulked and coupled to the connecting portion 204. Reference numeral 206 denotes a second terminal, and the second terminal 206 has a ring-shaped stop portion 20.
7 and the caulking type connection portion 208 are integrally provided.
The shape memory wire 201 is connected to the connecting portion 208.
And the end of the lead wire 209 for energizing the shape memory wire 201 are caulked and coupled. In addition, terminal type connectors 211 and 212 are respectively crimped and coupled to the remaining ends of the two lead wires 205 and 209 described above.

As shown in FIG. 18, the shape memory wire 20 is used.
The first terminal 202, which is joined by crimping one end of the lead wire 205 and the end of the lead wire 205, is a metal tightening screwed into the screw hole 92 of the mounting piece 93 of the movable rod 83 through the stopper 203. It is connected to the movable rod 83 by a screw 215. In addition, the second terminal 20 in which the other end of the shape memory wire 201 and the end of the lead wire 209 are caulked and coupled to each other.
6 is connected to the body 1 by a metal tightening screw 216 screwed into a screw hole (not shown) of the body 1 through the stopper 207. Further, the terminal-type connectors 211 and 212, which are caulked and coupled to the remaining ends of the two lead wires 205 and 209, are inserted into the soldering terminals 217 and 218 provided downward on the rear end surface of the body 1. It is connected. And the two lead wires 205, 2
09 are positioned by the small protrusions 221 ... Provided at predetermined positions of the arm portion 5 or the body 1 and are drawn around in an orderly manner.

With the structure described with reference to FIGS. 18 and 19, one end of the shape memory wire 201 is connected to the movable rod 83 via the first terminal 202, and the other end is connected to the second terminal 2.
It is connected to the body 1 via 06. The first terminal 202 is also used as a terminal for connecting the end of the lead wire 205 to one end of the shape memory wire 201, and moreover, the one end of the shape memory wire 201 and the end of the lead wire 205 are surely connected. High reliability of energization can be obtained by touching. Second
The same applies to the connecting portion between the other end of the shape memory wire 201 and the end of the lead wire 209 by the terminal 206. Moreover, the other end of the shape memory wire 201 is not directly connected to the soldering terminal 218 used for soldering, and the soldering terminal 218 and the other end of the shape memory wire 201 are connected to each other. Since the lead wire 209 is interposed therebetween, there is an advantage in that the shape memory wire 201 is not affected by heat when the soldering terminal 218 is soldered.

The operation of the eject mechanism 55 when inserting the card C in FIGS. 5 to 7 and the operation of the disengagement mechanism 81 in FIGS. 8 to 11 are performed by the eject mechanism 55.
The operation when discharging is shown. 13 and 14 are explanatory views showing the action of the engaging projection 75 when the card C is inserted or when the card C is ejected.

In this card connector, the free end of the first lever 57 is always biased in the forward direction by the spring body S1 and the tip end of the second lever 63 is always biased in the forward direction by the spring body S2. In the inserted state, the first lever 57 and the second lever 63 overlap with each other, and the engaging portion 71 of the first lever 57 is fitted in the engaging hole 73 of the second lever 63.

When the card C is inserted from this state through the card insertion / removal path, it hits the engaging protrusion 75 of the card C as shown in FIG. 5, and then the second lever 63 is pushed through the engaging protrusion 75. As a result, the tip end portion of the second lever 63 retracts against the force of the spring body S2, and the front end side 74 of the engagement hole 73 engages with the engagement portion 71. After that, the backward movement of the tip end portion of the second lever 63 is transmitted to the free end portion of the first lever 57 via the engagement portion between the front end side 74 of the engagement hole 73 and the engagement portion 71, and The free end of the 1-lever 57 moves back together with the tip of the second lever 63.
In the middle of this operation, as shown in FIG.
Of the engagement release mechanism 81 slides on the face plate portion 85 of the disengagement mechanism 81 while pushing the face plate portion 85 to the outside as indicated by the arrow X in the figure. At the time when the card C is inserted to the proper set position and the individual pin contacts 2 of the pin contact group 3 are individually inserted into proper states in a large number of small holes (not shown) in the end surface C1 of the card C. , Second lever 63
The protruding piece 68 rides over the face plate portion 85 of the engagement release mechanism 81, and the front end edge of the protruding piece 68 engages with the end face of the face plate portion 85 as shown in FIGS. 7 and 16. As a result, the second lever body 63 is locked in that position, so that the first lever body 57 is moved to the first lever body 57 from the relationship that the engagement between the front end side 74 of the engagement hole 73 and the engagement portion 71 is maintained as it is. It is held at the same position as the 2 lever body 63. This position is the standby position for the first lever body 57 and the second lever 63.

Card ejection from this state is performed by moving the movable rod 83 of the engagement releasing mechanism 81 from the returning position to the operating position. Here, the return position of the movable rod 83 is the position shown in FIG. 16, that is, the position where the movable rod 83 is pulled forward by the force of the spring body 84 and balanced with the tension of the shape memory wire 201 and stopped. . The operating position of the movable rod 83 is the position shown in FIG. 17, that is, the movable rod 83 is retracted against the force of the spring body 84, and the rear end 9 of the movable rod 83 is moved.
The inclined edge 91 of 7 is the position where the protrusion 68 of the second lever 63 is pushed down to release the engagement between the front end side 74 of the engagement hole 73 and the engagement portion 71.

Such movement of the movable rod 83 from the return position to the operating position can be performed by applying a push operation to the front end portion of the movable rod 83, but here, the shape memory wire 201 is energized. A case will be described below. That is, the terminals 217 and 218 shown in FIGS.
By applying a voltage to the lead wires 205, 209
When the shape memory wire 201 is energized through the shape memory wire 201, the shape memory wire 201 generates heat and switches to the contraction mode to start contraction, pulls the front end portion of the movable rod 83 rearward, and moves the movable rod 83 backward toward the operating position. Let When the movable rod 83 reaches the operating position in this way (FIG. 8),
The inclined edge 91 of the rear end 97 of the movable rod 83 is
Since the protrusion 68 of the lever 63 is pushed down to release the engagement between the front end side 74 of the engagement hole 73 and the engagement portion 71, the free end portion of the first lever 57 causes the force of the spring body S1 as shown in FIG. Instantly rocks to the forward position. The shape memory wire 20
The energization of 1 may be stopped when the engagement between the front end side 74 of the engagement hole 73 and the engaging portion 71 is released, and in the non-energized state, the shape memory wire 201 is in the extension mode, and Return to length.

As the first lever 57 swings as described above, the position of the caulking pin 64 swings as shown by the arrow Y as shown in FIG. 9, so that the second lever body 63 moves to the left in the figure. Move a little. Therefore, when the distance in the left-right direction between the caulking pin 64 and the outer end of the protruding piece 68 shown in the figure becomes short by an amount corresponding to N1-N2, the protruding piece 68 of the second lever body 63. Comes off from the end face of the face plate portion 85 as shown in FIG.
Immediately thereafter, the tip of the second lever body 63 swings through the swing path indicated by the arrow L2 in FIG. 11 by the force of the spring body S2 to overlap with the back side of the first lever body 57 and engage. It returns to the initial state in which the hole 73 and the engaging portion 71 are fitted together.

In the card discharging operation described with reference to FIGS. 8 to 11, when the free end of the first lever 57 momentarily swings toward the forward position by the force of the spring body S1 as shown in FIG. The mating protrusion 61 slightly pushes out the end surface C1 of the card C. In this case, since the distance between the engagement protrusion 61 and the swing fulcrum of the first lever 57 is short, even if a large number of pin contacts 2 are inserted into the card C and a large pulling force is required, the pulling force is large. The pushing force commensurate with the above is naturally added to the card C. After the end surface C1 of the card C is pushed out by the engagement protrusion 61 and the many pin contacts 2 of the card C are pulled out, the engagement protrusion 75 of the second lever 63 pushes out the card C as shown in FIG.

At this time, since the above-mentioned pulling-out force is unnecessary for ejecting the card C, there is a concern that the card C may jump out from between the arm portions 4 and 5 of the body 1, but this card is a concern. In the connector, when ejecting the card, as can be seen in FIG. 22, the rubber body 14 provided on the arm portions 4 and 5 makes elastic contact with the side surface C3 of the card C to reduce the momentum of the card C in the ejecting direction. Therefore, even if the spring bodies S1 and S2 exhibiting a large elastic force are used, the situation in which the card C jumps out from the card connector does not occur. Such an effect of preventing the card C from popping out is further assured by the fact that the contact piece portion 27 of the ground frame 11 supported by the backup material 13 comes into contact with the side surface C3 of the card C to generate a certain frictional resistance. Will be demonstrated.

Even if the width of the card C varies, the contact piece portion 27 of the ground frame 11 is always elastically supported by the backup material 13, so that the contact piece portion 27 is kept in contact with the card C. Contact the side of the board securely and stably.

On the other hand, when the card C is inserted and when the card C is ejected, the curved engaging projections 75 form the end surface C of the card C.
Since the engaging projections 75 rub against each other while rubbing against each other, the end surface C1 of the card C is not scratched by the engaging projection 75, and the engaging projection 75 is not caught on the end surface C1 of the card C. FIG.
Also, FIG. 14 shows a state in which the engagement protrusion 75 and the end surface C1 of the card C are pressed against each other when the card is inserted. Further, the bending line 77 at the base portion of the plate piece portion 76 causes the swing paths L1, L2 between the standby position and the forward movement position of the second lever 63.
Since the end surface C1 of the card C and the engaging projection 75 are pressed against each other, the force is applied to the plate piece 7
6 does not bend and deform.

In the above, the upper card connector unit U1 has been mainly described, but the same applies to the lower card connector unit U2. Therefore, the same or corresponding portions in these card connector units U1 and U2 are designated by the same reference numerals.

[0045]

According to the present invention, when the card is inserted or removed, the end surface of the card is not damaged by the engaging projection, and the engaging projection is caught on the end surface of the card, so that the card cannot be ejected. The card can be inserted and removed smoothly, and the card ejection performance is particularly improved. Further, in the case where the bending line of the root portion of the plate piece portion provided with the engaging projection is arranged along the swing path between the standby position and the forward position of the lever, the plate piece provided with the engaging projection is provided. Since the bending strength of the plate piece can be increased without widening the width of the portion or increasing the wall thickness of the lever or the engaging projection, the card connector can be made thin by the measures for increasing the bending strength. Of the card connector, increase in weight of the card connector, and increase in material cost.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a card connector according to an embodiment of the present invention as viewed from the upper surface side.

FIG. 2 is a schematic perspective view of the card connector as seen from the lower surface side.

FIG. 3 is a schematic plan view of a card connector unit.

FIG. 4 is an exploded perspective view of an eject mechanism.

FIG. 5 is an explanatory diagram showing the operation of the eject mechanism at the initial stage when a card is inserted.

FIG. 6 is an explanatory diagram showing the operation of the eject mechanism at an intermediate stage during card insertion.

FIG. 7 is an explanatory diagram showing a state where an eject mechanism is locked by inserting a card.

FIG. 8 is an explanatory diagram showing a state at the time of starting the operation of the engagement releasing mechanism at the time of card ejection.

FIG. 9 is an explanatory diagram showing a state immediately before the locked state of the eject mechanism is released during card ejection.

FIG. 10 is an explanatory diagram showing a state where the locked state of the eject mechanism at the time of card ejection is released.

FIG. 11 is an explanatory diagram showing an operation of a final stage of the eject mechanism during card ejection.

FIG. 12 is a partially enlarged perspective view showing engaging protrusions and the like.

FIG. 13 is an explanatory diagram showing a state in which the engagement protrusion and the end surface of the card are pressed against each other when the card is inserted.

FIG. 14 is an explanatory diagram showing a state in which the engagement protrusion and the end surface of the card are pressed against each other when the card is inserted.

FIG. 15 is a perspective view of an engagement releasing mechanism.

FIG. 16 is a view for explaining the action of the engagement release mechanism.

FIG. 17 is a view for explaining the action of the engagement release mechanism.

FIG. 18 is a plan view of the configuration for operating the movable rod of the disengagement mechanism as seen from below.

FIG. 19 is an explanatory diagram of a configuration for operating a movable rod of an engagement release mechanism.

FIG. 20 is an exploded perspective view of a ground frame, a ground terminal, and the like arranged in the arm portion of the card connector unit as viewed from the back surface side.

21 is a side view showing a main part of the frame for ground taken along the arrow XXI of FIG. 20. FIG.

FIG. 22 is a cross-sectional plan view of an arm portion in which a rubber body, a frame for ground, and a backup material are assembled.

FIG. 23 is an enlarged perspective view of a rubber body.

FIG. 24 is a partial cross-sectional view showing a state in which the ground terminal is inserted into the insertion hole of the wiring board.

FIG. 25 is a vertical cross-sectional front view showing the ground frame and the ground terminal assembled to the arm portion of the card contact unit.

FIG. 26 is a plan view showing the shape of an insertion hole of a wiring board.

FIG. 27 is a vertical cross-sectional side view of a card connector mounted on a wiring board.

FIG. 28 is an exploded perspective view showing a main part of a card connector according to a comparative example.

FIG. 29 is an operation explanatory view of the card connector of FIG. 28.

FIG. 30 is an explanatory diagram of the operation of the card connector of FIG. 28.

[Explanation of symbols]

 C card C1 card end surface C2 axis t card thickness direction 63 lever (second lever) 75 engaging protrusion 76 plate piece 77 bending line 78 edge of plate piece lever advance position side L1, L2 swing path

Claims (2)

[Claims] 1. An engaging projection is provided on a lever that can be swung around a predetermined position as a fulcrum, and the lever is moved forward by pushing the engaging projection by an end surface of a card inserted through a predetermined path. From the standby position to the forward position, and when the lever is swung from the standby position to the forward position, the engaging projection pushes the end surface of the card to push the card out the path. This lever is integrally provided with a plate piece portion whose root portion is bent at a right angle or substantially a right angle with respect to the lever, and is provided with an axis extending in the thickness direction of the card arranged in the above path and in the card pushing direction. A card connector characterized in that an engaging projection bent into a curved shape protruding to the above is extended from the plate piece portion. 2. A bending line of a root portion of the plate piece portion with respect to the lever is along a swinging path between the standby position and the forward movement position of the lever, and at the edge of the plate piece portion on the lever forward movement side. 2. The card connector according to claim 1, wherein one end edge portion of the engaging projection in the bending direction is smoothly connected.