JP2003249314A - Connector device for card - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a circuit or the like in a card from being broken when the electrostatically-charged card is inserted into a card connector provided with a metallic cover. <P>SOLUTION: First, second and third antistatic means 30, 40 and 50 are mounted on the cover 22. The antistatic means 30 is formed by forming a swelled part 31 on the upper surface part of the cover 22. The antistatic means 40 is formed by forming a pair of projecting parts 41 at both front left and right ends of the cover 22. The antistatic means 50 is formed by forming a cut-out part 51 at the front edge of the cover 22. Thereby, static charged in the card 10 is discharged to the cover 22 from a grounding contact part 12c but never discharged from a contact part 12c for a signal, and hence an IC or memory data in the card 10 can be prevented from breaking. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card connector device for mounting a card in which an IC or the like constituting a memory is mounted.

[0002]

2. Description of the Related Art Generally, a card connector device to which a small memory card is mounted is provided with a resin housing 1 as shown in FIG. 13, and a memory card 2 is inserted into the housing 1. Card insertion portion 3 and each contact portion 4 of the memory card 2 inserted in the card insertion portion 3
A plurality of terminals 5 that are in contact with are arranged in parallel. The housing 1 is provided with a metal cover 6 that covers the card insertion portion 3, and a part of the cover 6 is soldered to the ground pattern of the circuit board 7.

[0003]

By the way, if the memory card to be inserted into the card insertion portion is electrostatically charged or the operator who inserts the card is electrostatically charged, the memory card is inserted or during insertion. Static electricity may be generated from the contact part of the card to the cover.
However, in the conventional structure, if not sure which discharge from the contact portion to the cover occurs for each of the shortest distance is the same from the contact portion to the cover, the discharge from the contact portion of the ground occurred memory Although it does not affect the circuit inside the card, when discharge occurs from the contact part for the signal, a voltage of several thousand to ten thousand volts is generated in the signal line of the circuit inside the memory card and recorded in the IC or memory inside the card. There is a risk that the created data will be destroyed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a metal cover with a circuit or the like in the card destroyed when an electrostatically charged card is inserted. An object of the present invention is to provide a card connector device capable of preventing the card from being lost.

[0005]

In order to achieve the above-mentioned object, a card connector device according to a first aspect of the present invention includes a card insertion portion into which a card is inserted and contact portions of the card inserted into the card insertion portion, respectively. In a card connector device having a plurality of contacting contact terminals, a metal cover that covers the card insertion portion and is connected to the ground of the circuit is provided, and each contact portion is at least one ground contact portion. With a metal contact, the shortest distance from the signal contact of the card inserted in the card insertion part to the cover is longer than the shortest distance from the ground contact to the cover. It is characterized in that means for preventing static electricity is provided.

In the card connector device according to a second aspect of the present invention, the contact portions are arranged side by side in a direction orthogonal to the insertion direction of the card.
The contact portions located on both ends of the contact portions arranged side by side are the ground contact portions, and the static electricity countermeasures are provided on the upper surface of the cover at least between the contact portions for both grounds during the insertion of the card. It is characterized in that it is constituted by bulging the opposing regions upward.

According to another aspect of the card connector device of the present invention, the contact portions are arranged side by side in a direction orthogonal to the insertion direction of the card.
The contact portions located at both ends of the juxtaposed contact portions are ground contact portions, and the static electricity countermeasure means projects inward on the upper surface of the cover in correspondence with both ground contact portions. It is characterized in that it is configured by providing protruding portions for reducing the shortest distance between each protruding portion and the contact portions for both grounds.

According to another aspect of the card connector of the present invention, the contact portions are arranged side by side in a direction orthogonal to the insertion direction of the card, and the contact portions on both ends of the arranged contact portions are grounded. The contact protection part is characterized in that the static electricity countermeasure means is formed by cutting out an edge portion of the cover on the insertion opening side facing between the contact parts for both grounds of the card in the insertion start state.

[0009]

According to the invention of claim 1, the cover is provided with an antistatic means, and the shortest distance from the signal contact portion of the card to the cover is longer than the shortest distance from the ground contact portion to the cover. Therefore, even if the card is electrostatically charged, the static electricity is always discharged from the ground contact portion to the cover. Therefore, when the static electricity is discharged, a high voltage is not generated in the signal line of the circuit in the card, and it is possible to prevent the circuit in the card from being destroyed.

According to the second aspect of the present invention, the upper surface of the cover facing between the ground contact portions located on both ends of the card in the middle of insertion is bulged upward. During the insertion, the ground contact is always discharged to the cover. Therefore, during insertion, static electricity is not discharged from the signal contact portion of the card to the cover, and it is possible to prevent the destruction of circuits inside the card.

According to the third aspect of the invention, the cover is provided with protrusions corresponding to the ground contact portions located on both ends of the card, and the shortest distance between the cover and the ground contact portion is shortened. When the card is inserted, even if the card is electrostatically charged, the static electricity is always discharged from the ground contact portion to the cover. Therefore, when the static electricity is discharged, a high voltage is not generated in the signal line of the circuit in the card, and the circuit in the card or the like can be prevented from being destroyed.

According to the fourth aspect of the present invention, since the insertion side edge portion of the card facing between the ground contact portions located at both ends of the card in the insertion start state is cut out, the electrostatically charged card can be removed. During insertion, static electricity is always discharged from the ground contact portion to the edge of the cover on the insertion side. Therefore,
A high voltage is not generated in the signal line of the circuit in the card due to the discharge of static electricity, and it is possible to prevent the circuit in the card from being destroyed.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the card connector device according to the present invention will be described below with reference to FIGS.

<First Embodiment> First, a card mounted on the card connector device of the first embodiment will be described. As shown in FIGS. 8 and 10, the card 10 has a rectangular shape and includes a resin-made case 11 provided with a circuit board (not shown) on which an IC or the like forming a memory is mounted. As shown in FIG. 10, a plurality of contact portions 12 are arranged on the lower surface of the front end portion of the card 10, and each contact portion 12
Of these, the contact portions 12 located on both left and right sides (both upper and lower sides in FIG. 1) are ground contact portions 12a, the center contact portion 12 is a power source contact portion 12b, and the other contact portions 12 are provided. Is the signal contact portion 12c.

The card connector device of the first embodiment is
As shown in FIGS. 1 to 4, a resin housing 20 and a metal cover 22 that covers the housing 20 are provided. The housing 20 is provided with a card insertion portion 21 into which the card 10 is inserted and a terminal 23 that is in contact with a plurality of contact portions 12 of the card 10 at the inner portion thereof. The card insertion portion 21 is formed by denting the upper surface in a rectangular shape, and has a card insertion opening 21a on the right side surface in FIG. Further, as shown in FIG. 5, the left and right inner wall surfaces guide surfaces 21b and 2 for guiding the card 10 to the insertion position.
It is 1b.

As shown in FIG. 3, each terminal 23 is composed of an elongated elastic piece, and seven terminals are arranged side by side in a direction orthogonal to the card insertion direction with the tip end thereof protruding into the card insertion portion 21. Has been done. A contact point that contacts each contact section 12 of the card 10 is formed at the tip of each terminal 23, and the end opposite to the tip is from the rear end of the housing 20 (the left end in FIG. 3). It projects rearward and is soldered to the circuit pattern of the circuit board 24. Of each terminal 23,
The two terminals 23 located on the left and right ends (upper and lower ends in FIG. 3) are the ground terminals 23a, the center terminal 23 is the power supply terminal 23b, and the other terminals 23 are the signal terminals 23c. ing.

As shown in FIG. 5, the cover 22 is formed by bending a metal plate into a gate shape in a front view, and has a card insertion portion 2
The left and right side plates are disposed along the left and right outer side surfaces of the housing 20 while covering the upper surface of the housing 1. As shown in FIG. 1, of the lower edge portions of the left and right side plates, a total of four locations at both front and rear ends (both left and right ends in FIG. 1) project at right angles along the mounting surface of the circuit board 24. The projecting portion 22a is the circuit board 2
It is designed to be soldered to the ground pattern of No. 4.

The front edge of the cover 22 has both left and right edges extending forward and an upper edge extending obliquely upward. As shown in FIG. An opening / closing door 25 made of resin is rotatably supported between the plates.
The opening / closing door 22 is formed in a horizontally long rectangular shape that closes the card insertion opening 21a, and has rotating shafts 25a, 25 on both left and right edges.
a is formed to project, and both rotation shafts 25a thereof are fitted in support holes 22b and 22b formed in both left and right side plates of the cover 22. Further, in FIG. 2, the rotary shaft 2 on the left side in front view is shown.
A torsion coil spring 26 is attached to 5a so that the opening / closing door 25 is constantly urged to a position where the card insertion opening 21a is closed.

The cover 22 is further provided with a first antistatic means 30, a second antistatic means 40, and a third antistatic means 50. As shown in FIGS. 1, 4, and 5, the first static electricity countermeasure means 30 is configured by bulging the central region of the upper surface of the cover 22 upward. As shown in FIG. 5, the left edge portion 31a of the bulging portion 31 has a contact portion 1 of the card 10 being inserted.
The leftmost edge of the ground contact portion 12a among the two is located at the same position as or slightly outside (on the left side in FIG. 5) a line extending upward from the left edge portion of the ground contact portion 12a. The shortest distance A1 from the portion 12c to the cover 22 is the shortest distance A from the ground contact portion 12a to the cover 22.
It is formed to be longer than 2.

Similarly to the left edge 31b, the right edge 31b of the bulge 31 also extends upward from the right edge of the ground contact 12a, which is the rightmost end of the contact 12 of the card 10 being inserted. The position is almost the same as the line or slightly outside (right in FIG. 5) of the position, and the shortest distance A1 from the signal contact portion 12c to the cover 22 is from the ground contact portion 12a to the cover 22. It is formed to be longer than the shortest distance A2.

As shown in FIG. 7, the bulging portion 31 is
At least the card 10 is inserted and the ground contact portion 12a
Is the shortest distance A1 from the signal contact portion 12c to the cover 22 to the position where the contact starts with the ground terminal 23a.
It extends inward so that it is longer than 2.

The second countermeasure against static electricity 40 is shown in FIGS.
As shown in FIG. 5, the cover 22 is formed by notching the left and right ends of the inclined surface at the front end of the upper surface of the cover 22 so as to project inward. Each of the protrusions 41, 41 is formed so as to protrude to a position in contact with the upper surface of the card 10 to be inserted, and the outer edge portion of each ground contact portion 12a (the left edge portion in the left ground contact portion 12a, In the right ground contact portion 12a, the right edge portion is located at the same position as or slightly outward from the line extending upward (left protrusion 41 is left, right protrusion 41 is right) Are formed at the respective positions. That is, in a state where the card 10 is inserted and each contact portion 12 is directly below each protruding portion 41,
Shortest distance B from each signal contact part 12c to the cover 22
It is formed so that the shortest distance B2 from each protrusion 41 to the ground contact portion 12a is shorter than 1.

As shown in FIGS. 1 and 9, the third antistatic means 50 is formed by cutting the front edge of the cover 22 into a rectangular shape. The left and right edge portions 51a, 51 of the cutout portion 51
a (upper and lower edges in FIG. 9) are outer edge portions (left side edges) of the ground contact portions 12a located on both left and right end sides (upper and lower end sides in FIG. 9) of the card 10 in the insertion start state. The left edge portion of the contact portion 12a for ground and the right edge portion of the contact portion 12a for right ground) are almost at the same position as or slightly outward (left edge 51a is left, right edge 51b). Is the right side), and the shortest distance C1 from each signal contact part 12c in the insertion start state to the front edge of the cover 22 is the shortest distance from each ground contact part 12a to the front edge of the cover 22. It is formed to be longer than C2. In addition, in the insertion start state in which the insertion of the card 10 is started, the card 10 is guided by the opening edge portion of the insertion port 27 provided in the housing in which the card connector device of the present embodiment is incorporated, and is used for the signal. Contact part 12
The relationship between the shortest distance C1 from c to the front edge of the cover 22 and the shortest distance C2 from the ground contact portion 12a to the front edge of the cover 22 is maintained.

Next, the operation of this embodiment will be described. When the card 10 charged with static electricity or the operator charged with static electricity inserts the card 10, when the card 10 is brought closer to the card insertion opening 21a, the shortest distance from each signal contact portion 12c of the card 10 to the cover 22. Since C1 is longer than the shortest distance C2 from each ground contact portion 12a to the cover 22, static electricity is not discharged from the signal contact portion 12c to the cover 22, but is discharged from the ground contact portion 12a to the cover 22. (See Figure 9).

Then, the card 10 is inserted into the card insertion slot 21a.
When you insert it into the back and carry it to the back, each protruding part 41
Touch the top surface of 0. Here, each ground contact portion 12
Since the shortest distance B2 from a to the protruding portion 41 is shorter than the shortest distance B1 from each signal contact portion 12c to the cover 22, static electricity not discharged in the above is discharged from the ground contact portion 12a to the protruding portion 41. (See Figure 6).

Further, the card 10 is carried inward and mounted in the insertion position (see FIG. 8). Here, the upper surface of the cover 22 bulges out and each signal contact portion 12c is inserted in the middle of insertion.
Since the shortest distance A1 from the cover 22 to the cover 22 is longer than the shortest distance A2 from each ground contact 12a to the cover 22, static electricity not discharged in the above is discharged from the signal contact 12c to the cover 22. Nothing happens, and the ground contact portion 12a is discharged to the cover 22 (see FIG. 5).

As described above, in the above embodiment, the cover 22 is used.
A notch 51 is formed at the front edge of the card so that the static electricity charged on the card 10 at the start of card insertion is always the ground contact portion 12
Since the discharge is performed from a to the cover 22, it is prevented that a high voltage is generated in the signal line of the circuit in the card 10 and the IC in the card 10 or the stored data is destroyed by the discharge of static electricity. it can.

Further, since the protrusions 41 come into contact with the upper surface of the card 10 during the insertion of the card 10 so that the static electricity charged on the card 10 is discharged to the protrusions 41, the static electricity may be generated during the insertion. High voltage is not generated in the signal line of the circuit in the card 10 due to the discharge, and the destruction of the IC in the card 10 or the stored data can be prevented.

Further, the upper surface of the cover 22 is swollen so that the electrostatic charge on the card 10 is discharged to the cover 22 from the ground contact portion 12a.
The static electricity will not be discharged from the signal contact portion 12c to the cover 22 while reaching the insertion position, and a high voltage will be generated in the signal line in the card 10 and the IC or stored data will be destroyed. Can be prevented.

<Second Embodiment> The same components as those of the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
As shown in FIGS. 11 and 12, the cover 22 of the second embodiment.
In this case, as static electricity countermeasures 60, ridges 61, 61 projecting inward are formed facing each other at both left and right ends.
Each of the protrusions 61 is formed so as to come into contact with the upper surface of the card 10 to be inserted, and the inner edge of each protrusion 61 (in FIG. 12, the right edge of the right protrusion 61 is a right edge). , A left edge portion of the left protrusion 61) 61a,
An outer edge portion of each ground contact portion 12a of the card 10 in which 61b is being inserted (the left edge portion in the left ground contact portion 12a, the right edge portion in the right ground contact portion 12a) is extended upward. The shortest distance D1 from each signal contact portion 12c to the cover 22 which is in the middle of insertion is the shortest distance from each ground contact portion 12a to each ridge portion 61. Distance D
It is formed to be longer than 2.

Further, in each of the ridges 61, at least the card 10 is inserted, and the shortest distance D1 from the signal contact portion 12c to the cover 22 is the ground, up to a position where the ground contact portion 12a starts to contact the ground terminal 23a. Contact part 1
It extends inward so as to be longer than the shortest distance 22 from 2a to the cover 22.

As a result, the shortest distance D1 from each signal contact portion 12c in the middle of insertion to the cover 22 is the shortest distance D from each ground contact portion 12a to each ridge 61.
Since it is longer than 2, the static electricity charged on the card 10 is not discharged from the signal contact portion 12c to the cover 22 during the insertion, and the ground contact portion 1 is always provided.
2a is discharged to the cover 22. Therefore, the card 10
During the insertion of the IC, a high voltage is generated in the signal line of the circuit in the card 10 due to the discharge of static electricity and the IC in the card 10 is
It is possible to prevent the stored data and the like from being destroyed.

The present invention is not limited to the above-mentioned embodiments, but can be modified and implemented as follows, for example, and these embodiments also belong to the technical scope of the present invention. (1) In the above-described first embodiment, the first antistatic means 30 is configured by bulging the central region of the upper surface of the cover 22, but the region may be cut out and opened.

(2) In the first embodiment, the bulging portion 3
1 is the signal contact portion 1 until the ground contact portion 12a of the card 10 starts contacting with the ground terminal 23a.
The shortest distance A1 from 2c to the cover 22 extends inward so as to be longer than the shortest distance A2 from the ground contact portion 12a to the cover 22. However, the shortest distance A1 may extend further inward, or the front side ( It may be short on the card slot side).

(3) In the first embodiment, the cover 2
In FIG. 2, the first antistatic means 30, the second antistatic means 40, and the third antistatic means 50 are provided.
At least one of the first, second, and third measures against static electricity
One should be provided. In addition, the present invention can be variously modified and implemented without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is a top view showing an entire card connector device according to a first embodiment.

FIG. 2 is a front view showing the entire card connector device of the embodiment.

FIG. 3 is a top view showing a state in which the cover of the same embodiment is removed.

FIG. 4 is a side view showing the entire card connector device of the embodiment.

FIG. 5 is a sectional view taken along line 5-5 in FIG. 1 of the same embodiment.

FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 1 of the same embodiment.

FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 1 of the same embodiment.

FIG. 8 is a side sectional view showing a card mounted state of the same embodiment.

FIG. 9 is a cutout portion of the embodiment (third static electricity prevention means).
It is a top view which shows.

FIG. 10 is a rear view of the cover showing the bulging portion (first static electricity preventing means) of the same embodiment.

FIG. 11 is a top view showing the cover of the second embodiment.

FIG. 12 is a cross-sectional view taken along line 12-12 in FIG. 11 of the same embodiment.

FIG. 13 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

10 cards 12 Contact part 12a Contact part for ground 12c Signal contact part 21 Card insertion part 22 cover 23 terminals 23a Ground terminal 23c Signal terminal 30 First static electricity countermeasures 31 bulge 40 Second measure against static electricity 41 Projection 50 Third measure against static electricity 51 Notch 60 Countermeasures against static electricity 61 Ridge

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C005 MA06 MB03 NA02 NA19 TA02                       TA21 TA33                 5B018 GA04 HA40 MA24 QA20                 5B058 CA03 KA12 KA24 KA29                 5E021 FA05 FA11 FB02 FB18 FC17                       LA01 LA09 LA15                 5E023 AA04 AA16 AA21 BB19 BB22                       BB29 CC02 CC23 CC26 EE04                       EE10 GG02 HH12

Claims (4)

[Claims] 1. A card connector device comprising: a card insertion portion into which a card is inserted; and a plurality of connection terminals respectively contacting respective contact portions of the card inserted into the card insertion portion. A metal cover that covers and connects to the circuit ground is provided.
Each of the contact portions has at least one ground contact portion and a signal contact portion, and the metal cover includes the signal contact portion of the card inserted into the card insertion portion and the cover. The connector device for cards is provided with a static electricity countermeasure means for making the shortest distance of the above from the shortest distance from the ground contact portion to the cover. 2. The contact portions are arranged side by side in a direction orthogonal to the insertion direction of the card, and the contact portions located at both ends of the arranged contact portions are ground contact portions. The static electricity prevention means is constituted by bulging upward at least a region of the upper surface of the cover, which is opposed to a portion between the ground contact portions during the insertion of the card. 1. The card connector device according to 1. 3. The contact parts are arranged side by side in a direction orthogonal to the insertion direction of the card, and the contact parts located at both ends of the arranged contact parts are ground contact parts. Then, the static electricity countermeasure means provides an inward projecting portion on the upper surface portion of the cover corresponding to the contact portions for both grounds to shorten the shortest distance between the cover and the contact portions for both grounds. 2. The card connector device according to claim 1, wherein the card connector device comprises: 4. The contact portions are arranged side by side in a direction orthogonal to the insertion direction of the card, and the contact portions on both ends of the arranged contact portions are ground contact portions. 2. The static electricity prevention means is formed by cutting out an insertion opening side edge portion of the cover which faces between the ground contact portions of the card in the insertion start state. Card connector device.