JP2935828B2 - Card reverse insertion prevention structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory card, a credit card, a cash card, and the like, which are inserted into a card receiving area with the front and rear ends or the front and back of the card wrongly inserted. The present invention relates to a structure for preventing reverse insertion of a card for preventing entry.

[0002]

2. Description of the Related Art Conventionally, a card inserted reversely into a card receiving area of a device or a card tray is automatically detected and automatically ejected immediately after the insertion is completed. Methods and the like are generally employed.

A card inserted in the card receiving area in the correct direction is used by being electrically connected to a device by pressing an electrode pad provided on the card into contact with a contact projecting into the card receiving area.

[0004]

However, the method of automatically detecting and ejecting a reverse card by such an electric action is to receive the reverse card once to a card insertion end position in a card receiving area. Since the ejection is performed later, it takes time from the insertion of the card in the opposite direction to the ejection, and it cannot be quickly determined whether or not the card has been inserted in the correct direction. In addition, the card inserted in the opposite direction comes into contact with the contact and damages the contact, resulting in a complicated structure and high cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for preventing reverse insertion of a card, which mechanically reliably prevents insertion of a reverse card during insertion.

[0006]

According to the present invention, there is provided a card which is provided with a corner cutting portion at one end of a front edge portion and which is inserted into and removed from a card receiving area, and which can be elastically displaced in a vertical direction perpendicular to the card inserting and removing direction. The above-mentioned problem is solved by a reverse insertion preventing structure for a card having a cantilever-shaped reverse card insertion preventing body having a free end portion and preventing entry of a card inserted in the reverse direction.

[0007] The reverse card insertion preventing body of the reverse card insertion preventing body includes first and second sensing pieces and support pieces extending along the card insertion / removal direction. Each free end is directed to the card receiving slot, and the support piece is extended from the base end connection portion of the first and second sensing pieces in a direction opposite to the first and second sensing pieces, and the first and second sensing pieces are extended. The sensing piece and the support piece are formed of an elastic metal strip having a substantially Y-shape as a whole, and a stopper and a pressure-receiving part are formed at each free end of the first and second sensing pieces. The card is located in the area of the corner of the card inserted in the card receiving area in the correct orientation.

The protruding piece and the chevron-shaped bent piece are connected to each other at the end opposite to the free end, and the chevron-shaped bent piece is disposed inside the protruding piece and shifted from the protruding piece to the card insertion end side. , Projecting above the protruding piece.

The protruding piece and the chevron-shaped bent piece protrude into the card receiving area so that when a card is not inserted in the card receiving area, it can be determined whether or not the inserted card is in the correct direction.

[0010] When the card is inserted in the receiving area in the correct orientation, the cut corner of the card abuts on the angled bent piece without abutting on the protruding piece. The chevron-shaped bent piece is pushed down by the corner drop edge, and displaces the protruding piece downward while displacing the support piece connected via the connecting portion downward. The projection is displaced to a position where it does not contact the correctly oriented card.

The correctly oriented card slides on the angled bent piece and passes over the protruding piece to press the electrode pad against the contact at the end of card insertion. When the card is withdrawn after use, the free end of the reverse card insertion preventing body is released from the restraint by the lower surface of the card and elastically displaces upward, so that the protruding piece and the chevron-shaped bent piece protrude into the card receiving area. Accordingly, the protruding piece and the chevron-shaped bent piece enter a standby state in which it can be determined whether or not the card to be inserted next is in the correct direction.

Next, when the card is inserted in the opposite direction, the protruding piece receives the leading edge of the corner of the card where the corner is not cut off and prevents the card from entering.

The protruding piece is disposed closer to the card insertion start end than the contact portion of the contact that comes into contact with the electrode pad of the card, and prevents the reverse card from entering before contacting the contact portion of the contact.

Further, the protruding piece is arranged at a position for preventing the reverse entry of the card before the electrode pad of the card reaches the card receiving port of the contact case (card receiving case).
The electrode pads of the inverted card do not abut on the edge of the card slot and are not damaged.

[0015] The opposite card, whose insertion has been blocked by the protruding piece, is sensed to be in the opposite direction by the touch of the user's finger, is once removed and changed to the correct direction, and then again in the card receiving area. Is inserted into.

[0016]

FIG. 1 is a block diagram showing an embodiment of the present invention.
7 will be described with reference to FIG.

The reverse insertion preventing body 20 for the card allows the card 21 to be received in the correct direction with respect to the card case 23 as shown in FIGS. , As shown in FIG. Note that the correct orientation of the card means that an electrode pad 28 described later is oriented so as to be able to contact the contact 29.

The card 21 has a corner 27 at one end of the front edge 26 and a corner 37 at the other end. The corner drop portion 27 is approximately 4
It is cut off at an angle of 5 degrees. In the front half of the back surface of the card 21, a number of electrode pads 28 that are in contact with contacts 29 described later are arranged in parallel.

Next, the card case 23 is
And a top plate 35, a card insertion chamber 40 is formed, the card insertion chamber 40 is opened at the rear edge of the base plate 30 and the top plate 35, and the card receiving port 22 is formed at the opening. .

The card case 23 has a pair of guide pieces 36 for guiding insertion and removal of the card 21.
The guide pieces 36 extend rearward from both sides of the card receiving port 22 in parallel to each other, and the opposing surfaces of the respective guide pieces 36 include:
A guide groove 41 for slidingly guiding the side of the card 21 is formed.

The card insertion chamber 40 of the card case 23
The card 21 has a depth to receive only the first half of the card 21, and the second half of the card is exposed to the outside of the case between the pair of guide pieces 36, as shown in FIG. The base plate 30 is provided with a contact 29 facing the card insertion chamber 40.

The contacts 29 are formed by spring strips extending in the card insertion / extraction direction, and a plurality of the contacts 29 are arranged at substantially equal intervals in a direction perpendicular to the card insertion / extraction direction. At the free end of the contact 29, a contact portion 52 that contacts the electrode pad 28 of the card 21 is formed. The base plate 30 of the card case 23 is formed with a stepped portion 31 and a through hole 32 that allow the below-described free end portion 45 of the reverse card insertion preventing body 20 to bend downward.

As shown in FIG. 6, the reverse card insertion preventing body 25 is made of an elastic strip made of a metal plate.
As shown in FIG. 1, the contacts 29 are arranged at the row ends and extend in the card insertion / removal direction, with the free end 45 facing the card receiving port 22 of the card case 23 and the base end facing the base plate 30.
Is fixedly mounted on the inner surface of the front end portion, and is supported so as to be elastically displaceable up and down with the fixed end as a fulcrum.

More specifically, the reverse card insertion preventing body 2
0 has first and second sensing pieces 46 and 47 extending along the card insertion / removal direction, and a support piece 43. The first and second sensing pieces 46 and 47 have their free ends at the card receiving end. The support piece 43 is extended toward the mouth 22 from the base end connecting portion 54 forward (in a direction opposite to the first and second sensing pieces), and is formed of a substantially Y-shaped elastic metal plate as a whole.

At the free end of the first sensing piece 46, a protruding piece 33 is formed which is a stopper for bending the tip of the free end upward. The second sensing piece 47 extends in parallel with the inside of the first sensing piece 46, and has a free end portion, which is a chevron bent piece 34 as a pressure receiving portion.
Is provided. The chevron bent piece 34 is formed by bending the tip of the free end upward in a chevron shape. The support piece 43
It is a member that can be elastically displaced in the vertical direction (the direction of arrow C in FIG. 6B), and is a connecting portion 5 of the first and second sensing pieces 46 and 47.
4 extends to the opposite side from the first and second sensing pieces 46 and 47. The end of the support piece 43 on the side opposite to the connection side is fixed to the inner surface of the front end of the base plate 30 by a screw or a stud 44 in order to make the reverse card insertion preventing body 20 cantilevered.

The reverse card insertion preventing body 20 supported in the cantilever state, that is, the first and second sensing pieces 46 and 47 supported in the cantilever state by the support pieces 43 have their free ends. The stopper and the pressure receiving portion provided at 45 can elastically displace in the vertical direction while bending the support piece 43 in the card insertion / removal direction.

The protruding piece 33 and the angled bent piece 34 are located in the area of the corner dropping portion 27 of the card 21 inserted in the card insertion chamber 40 of the card case 23 in the correct direction. Protruding piece 3
3 is a contact 2 which is in contact with the electrode pad 28 of the card.
9 is closer to the card slot 22 (card insertion start side) than the contact portion 52 of the card 9 and before the electrode pad 28 of the card inserted in the opposite direction reaches the card slot 22, It is in a position to prevent entry.

The angled bent piece 34 is arranged at a position shifted from the projecting piece 33 toward the card insertion end. The top portion 49 of the chevron bent piece 34 protrudes above the upper end 56 of the protruding piece 33 by a distance S. The angled bent piece 34 is formed in a mountain shape.
7 has a pressure-receiving surface 5 having a gradient rising in the card insertion direction.
0 is formed. The pressure receiving surface 50 makes it easier for the card 21 inserted in the correct direction to ride on.

Next, the operation when the card is inserted in the correct direction into the card case 23 will be described. When the card 21 is not inserted into the card case 23, the protruding piece 33 and the chevron-shaped bent piece 34 are at a standby position where they can come into contact with the card that is protruded into the card insertion chamber 40 and inserted.

The correctly oriented card 21 is shown in FIG.
As shown in FIG. 2B, the card is guided by the guide piece 36 and inserted into the card insertion chamber 40 of the card case 23 through the card receiving port 22.

As the card 21 enters the card case 23, the front edge of the corner dropping portion 27 is guided by the pressure receiving surface 50 at the tip of the second sensing piece 47 as shown in FIG.
The top portion 49 of the chevron 34 is pushed down and rides on it.

The card 21 is a top plate 3 of the card case 23.
Since the upward displacement is regulated by 5, the mountain-shaped bent piece 34 is pushed down while bending the second sensing piece 47 and the support piece 43 downward by the above-described riding. When the chevron-shaped bent piece 34 is pushed down, the first sensing piece 46 is bent downward while the support piece 43 is bent downward via the connecting portion 54, whereby the protruding piece 33 is also displaced downward integrally,
Contact between the upper end 56 of the projecting piece 33 and the card 21 is avoided.

The card 21 is shown in FIGS. 3A and 3B.
As shown in FIG.
3 and the electrode pad 28 is
9 to be electrically connected to the internal circuit. The card 21 has a chevron bent piece 34 as shown in FIG.
After pressing, the elasticity of the reverse card insertion preventing body 20 and the contact 29 causes the card to be pressed against the top plate 35 of the card case 23, so that the case 23 is inserted in a stable state without play.

As shown in FIG. 3, the rear end 51 of the card 21 inserted in the correct direction protrudes outward from the case 23 so as to be easily grasped and extracted.

After the card 21 is removed, the first and second sensing pieces 46 and 47 are elastically returned into the card insertion chamber 40 by the support pieces 43, and the projecting piece 33 and the chevron bent piece 34 are separated from each other by the card. Protrude into the insertion locus. As a result, the protruding piece 33 and the chevron bent piece 34 enter a standby state in which it is possible to determine whether or not the card to be inserted next is in the correct direction.

Next, the operation when the card is inserted in the case 23 in the opposite direction will be described.

4A and 4B show a reverse card 21.
As shown in FIG. 6, when the card 21 is slightly inserted into the card insertion chamber 40 through the card slot 22 by being guided by the pair of guide pieces 36, the front edge 26 of the corner 37 of the card 21 that has not been cut off is projected. It comes into contact with the piece 33 (see FIG. 5). At this time, the corner portion 37 is not in contact with the angled bent piece 34. Therefore, the protruding piece 33 receives the card 21 in the opposite direction, and prevents further entry of the card.

Moreover, since the protruding piece 33 is located closer to the card insertion start end than the contact portion 52 of the contact 29 that contacts the electrode pad 28 of the card, the card 21 is turned in the opposite direction.
Before the leading edge 26 of the card 21 comes into contact with the contact portion 52, the card 21 is prevented from entering in the opposite direction.

Further, the protruding piece 33 is also located at a position where the electrode pad 28 of the card 21 inserted in the reverse direction prevents the card in the reverse direction from entering before reaching the card receiving port 22 of the case 23. For this reason, the electrode pad 28 of the card 21 inserted in the opposite direction does not contact anywhere,
No damage.

As shown in FIGS. 6A and 6B, in addition to disposing the pressure receiving portion and the stopper at a position facing the edge of the corner, as another example, FIGS. 7A and 7B As shown in
The chevron-shaped bent piece 34 serving as a pressure receiving portion may be disposed so as to face the front edge 26 of the card 21 in the correct orientation.

In this case, the chevron-shaped bent piece 34 is pressed downward by the front edge 26 of the card 21 in the correct orientation and is displaced downward, displacing the protruding piece 33 downward to allow the card 21 to be inserted. .

On the other hand, the projecting piece 33 is the card 2 of the correct orientation.
The card 21 is located in the area of the corner 21 and abuts against the front edge 26 of the corner 37 of the card 21 inserted in the opposite direction, which is not cornered, to prevent the card 21 from entering.

[0043]

The reverse card insertion preventing body in the card reverse insertion preventing structure according to the present invention includes first and second sensing pieces and support pieces extending along the card insertion / removal direction. , The second sensing piece has its free end directed toward the card receiving slot, and the support piece extends from the proximal end connecting portion of the first and second sensing pieces in a direction opposite to the first and second sensing pieces. The first and second sensing pieces and the support pieces are formed of elastic metal strips having a substantially Y-shape in overall view, and are oriented as described above. When the card is inserted in the opposite direction, the protrusion which is the stopper of the first sensing piece abutting on the front edge of the card can surely prevent the insertion of a certain amount or more. The protruding piece is positioned at the corner drop portion of the card, and without being affected by the protruding piece, the angle-shaped bent piece, which is the pressure receiving portion of the second sensing piece, is pushed down at the front edge of the card to displace the support piece downward and follow the above. By displacing the protruding piece downward together with the first sensing piece, normal insertion becomes possible, and the first and second sensing pieces and the corner dropping portion of the card cooperate to properly achieve the purpose of preventing reverse insertion.

Also, the whole of the first and second sensing pieces and the support pieces is Y
With the very simple construction of the U-shaped resilient strips, the purpose of sensing and mechanically preventing and allowing incorrect and incorrect insertion of the card can be reliably achieved.

[Brief description of the drawings]

FIG. 1A is a plan view of a card case provided with a reverse insertion preventing structure for a card according to an embodiment of the present invention, and is a view in which a part of a top plate is cut away. (B) is sectional drawing which followed the reverse card insertion prevention body of (A).

FIG. 2A is a plan view showing a state in which a card in a correct direction is partially inserted into a case, and is a view in which a part of a top plate is cut away. (B) is sectional drawing which followed the reverse card insertion prevention body of (A).

FIG. 3A is a plan view of a state in which a card in a correct direction is inserted to the back of a case, and is a view in which a part of a top plate is cut away. (B) is sectional drawing which followed the reverse card insertion prevention body of (A).

FIG. 4A is a plan view showing a state immediately before inserting an inverted card into a case, in which a part of a top plate is cut away. (B) is sectional drawing which followed the reverse card insertion prevention body of (A).

FIG. 5A is a plan view showing a state in which the insertion of the card of FIG. 4 has been progressed and the reverse card insertion preventing body has prevented the reverse card from entering the case; It is the figure which fractured. (B) is sectional drawing which followed the reverse card insertion prevention body of (A).

FIG. 6A is a plan view of a reverse card insertion preventing body. (B) is a side view of (A).

FIG. 7A is a plan view showing a case where the arrangement position of the reverse card insertion preventing body is different from that of FIG. 6; (B) is a side view of (A).

[Explanation of symbols]

 REFERENCE SIGNS LIST 20 reverse card insertion preventing body 21 card 22 card receiving port 23 card case 26 front edge portion 27 corner drop portion 28 electrode pad 29 contact 33 protruding piece (stopper) 34 chevron bent piece (pressure receiving portion) 36 guide piece 37 Corner portions 43 not supporting portions 45 Free end portions 46 First sensing pieces 47 Second sensing pieces 48 Fixed end portions 52 Contact portions 54 Connecting portions

Claims (2)

(57) [Claims] 1. A card having a corner cut-off portion at one end of a front edge portion to be inserted into and removed from a card receiving area of a card case, and a free end portion capable of being elastically displaced in a vertical direction perpendicular to a card inserting and removing direction. In the structure for preventing reverse insertion of a card having a cantilevered reverse card insertion preventing body, the first and second sensing pieces 46 extend in the card inserting and removing direction. , 47 and a support piece 43, and the first and second sensing pieces 46, 47 have their free ends connected to the card receiving port 22.
And the support piece 43 is extended from the base end connecting portion 54 of the first and second sensing pieces in a direction opposite to the first and second sensing pieces,
The first and second sensing pieces 46 and 47 and the support piece 43 are substantially Y in overall view.
The first sensing piece 46 is formed at the free end thereof with a protruding piece 33 which is a stopper bent upward from the tip of the free end. The second sensing piece 47 extends in parallel with the inside of the first sensing piece 46 and has a free end portion provided with an upwardly bent chevron-shaped bent piece 34 as a pressure receiving portion, while the support piece 43 is provided with a first , Second sensing piece 4
The first and second sensing pieces 46, 47, which are fixed to the inner surface of the front end of the base plate 30 at the end opposite to the connection ends with the first and second sensing pieces 46, 47, are supported in a cantilevered state by the support pieces 43. The protruding piece 33 and the chevron-shaped bent piece 34 can be vertically displaced while the protruding piece 33 and the chevron-shaped bent piece 34 provided at each free end portion bend the support piece 43 in the card insertion / removal direction. Is located in the area of the corner drop portion 27 of the card 21 inserted in the card insertion chamber 40 of the card case 23 in the correct direction,
The protruding piece 33 is located closer to the card receiving port 22 (card insertion start side) than the contact portion 52 of the contact 29 that contacts the electrode pad 28 of the card, and the electrode pad 28 of the card inserted in the opposite direction is inserted into the card receiving port. Before reaching the position 22, the angled bent piece 34 is located at a position to prevent the card from entering in the opposite direction, and the angled bent piece 34 is arranged at a position shifted from the projecting piece 33 to the card insertion end side. The top portion 49 slightly protrudes above the upper end 56 of the protruding piece 33,
The angled bent piece 34 is pushed downward by the front edge of the card corner drop portion 27 inserted in the correct direction, and the projecting piece 33 is displaced downward while the support piece 43 connected by the connecting portion 54 is displaced downward. A reverse insertion preventing structure for the card, wherein the card is allowed to enter. 2. A card having a corner cut-off portion at one end of a front edge portion to be inserted into and removed from a card receiving area of a card case, and a free end portion capable of being elastically displaced in a vertical direction perpendicular to a card inserting and removing direction. In the structure for preventing reverse insertion of a card having a cantilevered reverse card insertion preventing body, the first and second sensing pieces 46 extend in the card inserting and removing direction. , 47 and a support piece 43, and the first and second sensing pieces 46, 47 have their free ends connected to the card receiving port 22.
And the support piece 43 is extended from the base end connecting portion 54 of the first and second sensing pieces in a direction opposite to the first and second sensing pieces,
The first and second sensing pieces 46 and 47 and the support piece 43 are substantially Y in overall view.
The first sensing piece 46 is formed at the free end thereof with a protruding piece 33 which is a stopper bent upward from the tip of the free end. The second sensing piece 47 extends in parallel with the inside of the first sensing piece 46 and has a free end portion provided with an upwardly bent chevron-shaped bent piece 34 as a pressure receiving portion, while the support piece 43 is provided with a first , Second sensing piece 4
The first and second sensing pieces 46, 47, which are fixed to the inner surface of the front end of the base plate 30 at the end opposite to the connection ends with the first and second sensing pieces 46, 47, are supported in a cantilever manner by the support pieces 43. The projecting piece 33 and the chevron-shaped bent piece 34 provided at each free end can be elastically displaced in the vertical direction while bending the support piece 43 in the card insertion / removal direction. The angled bent piece 3 is located in the area of the corner dropping portion 27 of the card 21 inserted in the card insertion chamber 40 in the correct direction.
4 is disposed so as to face the front edge portion 26 of the card 21, and the protruding piece 33 is closer to the card receiving port 22 than the contact portion 52 of the contact 29 that contacts the electrode pad 28 of the card (the card insertion start end). Side) and the electrode pad 28 of the card inserted in the opposite direction is located in a position to prevent the entry of the card in the opposite direction before reaching the card slot 22, while the chevron-shaped bent piece 34 is a protruding piece 33. The top 49 of the chevron bent piece 34 slightly protrudes above the upper end 56 of the protruding piece 33 so that the chevron bent piece 34 is oriented in the correct direction. The protruding piece 3 is depressed and displaced downward by the leading edge of the inserted card.
3. A reverse insertion preventing structure for a card, characterized in that the support piece 3 is displaced downward while the support piece 43 connected by the connecting portion 54 is displaced downward to allow the card to enter.