JPH0332072Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] A card connector in which a memory card can be inserted and removed with zero insertion and removal force, in which steps are provided in the pusher that pushes up the contacts and the slider that holds the pushed up contacts in that state. When inserting the card, ground, power,
Connect in the order of the signals and disconnect in the reverse order when removing the card, making it possible to protect the IC inside the card.

[Industrial application field]

The present invention relates to a card connector for electrically connecting IC cards and the like, which have been widely used in recent years.

For such card connectors, a connector with zero insertion/extraction force is required from the viewpoint of longevity and operability.

[Conventional technology]

In a conventional card connector, as shown in a cross-sectional view in FIG. 6, a case 1 has a card accommodating part 2 with one end open, and a contact 3 is installed so that one end thereof is located in the card accommodating part 2. , when the card 4 is inserted through the opening, the card 4 lifts the tip of the contact 3 upward and removes the contact 3.
It is brought into contact with the contact portion of the card 4 due to its spring properties. In such a card connector, the contacts 3 and the card 4 are in contact with each other during insertion and removal, and this poses a problem in terms of operability and lifespan, so a connector as shown in cross section in FIG. 7 was developed.

In this case, the card accommodating section 2 and the contact installation section 5 are separate members, and the card accommodating section 2 and the contact installation section 5 are integrated so that they can be freely opened and closed in the rotational direction via the rotating shaft 6. . In such a connector, the card 4 is first inserted into the card accommodating part 2 with the card accommodating part 2 open, and then the card 4 and the contacts 3 are brought into contact with each other by closing the card accommodating part 2. Note that a contact window is formed on the lower surface of the card accommodating portion 2 at a position corresponding to the contact portion of the card.

With this connector, there is no contact force at all when inserting or removing the card.

In such a card connector, in order to prevent the IC inside the card from being destroyed when the power is connected, the signal electrode of the contact part of the card 4 is connected to the connector shown in FIG. 8 as shown in FIG. 7. Increase the length of the power supply electrode 8 and the ground electrode 9 in that order, and change the height of each electrode as shown in Figure 9 for the connector shown in Figure 7. , the contacts are made in the order of the signals.

[Problem that the invention attempts to solve]

Among the conventional card connectors described above, the one shown in FIG. 6 does not achieve zero insertion/extraction force, and the one shown in FIG. 7 does achieve zero insertion/extraction force, but has the drawback of a large mounting area.

For this reason, although miniaturized card connectors with zero insertion/extraction force are being developed, there is an unsolved problem in terms of IC protection means.

The present invention was created in view of these points, and aims to provide a card connector that is miniaturized with zero insertion/extraction force and has IC protection means.

[Means to resolve the problem]

For this reason, in the present invention, as illustrated in FIG. pusher 12 that can be pushed up to break contact with
1 can be held in that state, and the state is released by the inserted card 17.
In a card connector equipped with a slider 13 and a second slider 15 which is biased in the direction of pushing out the card 17 by a spring 16, when the card 17 is inserted, the ground, power, and signal are connected in this order, and then the card is removed. It is characterized in that the contact push-up portion 12b of the pusher 12 and the contact support portion 13a of the first slider 13 are each provided with a step so that they sometimes open in the reverse order.

[Effect]

Contact support portion 13a of first slider 13
The steps provided on the board allow connections between the card and the connector in the order of ground, power, and signal.
The step provided on the contact push-up portion 12b of the pusher 12 allows connections between the card and the connector to be disconnected in the order of signal, power, and ground.

〔Example〕

1 to 4 are diagrams for explaining an embodiment of the present invention, in which FIG. 1 is a sectional view taken along the - line in FIG. 3, FIG. 2 is an exploded perspective view, and FIG. 3 is an assembled perspective view. FIG. 4 is a diagram showing a stepped portion of the pusher, and FIG. 5 is a diagram showing a stepped portion of the first slider.

As shown in FIG. 1a, FIG. 2, and FIG. 2 slider 15
and a spring 16 that biases the slider.

Inside the case 10 are the pushers 12 and the first
and second sliders 13 and 15 are slidably accommodated, and the contact 11 is formed to have multiple bent portions including a contact portion 11a with the card 17, and is fixed to the case 10 at one end thereof. There is.

By pushing in one end surface 12a of the pusher 12, the other end 12b can push up the contact 11, which is formed with an inclined surface. This contact push-up portion 12b
As shown in FIG. 4, steps h ₁ and h ₂ are provided so that the contacts can be opened in the order of signal, power, and ground.

In addition, the first slider 13 has a contact support part 13a that supports the tip of the contact 11 so that the contact 11 pushed up by the pusher 12 can be held in that state. (direction of arrow A). The contact support portion 13a has a fifth
As shown in the figure, connect contact 11 to ground, power supply,
Steps H ₁ and H ₂ are provided so that the signals can be brought into contact with the electrodes of the card in the order of signals.

The second slider 15 has guide portions 15a on its left and right sides into which a card 17 is inserted, and when the card 17 is inserted, the second slider 15 moves along with the case 15a.
The card 17 is configured to slide within the card 17, and is constantly biased by a spring 16 in a direction to push out the card 17.

The operation of this embodiment configured in this way will be explained with reference to FIGS. 1, 4, and 5.

FIG. 1a shows the state before the card 17 is inserted,
Pushya 12 is also not pushed inward. When the card 17 is inserted from this state as shown in FIG. The slider 13 is pressed to move the slider 13 in the same direction.
As a result, the contact 11 is connected to the ground, power supply, and signal in this order by the step provided in the contact support 13a of the slider 13 shown in FIG.
It slides down from a and contacts the electrodes of the card in that order. In this state, the engaging force between the concave part of the electrode part of the card 17 and the contact part 11a of the contact overcomes the repulsive force of the spring 16, maintaining a lever state.

Next, when the pusher 12 is pushed left and right (in the direction of arrow C) as shown in FIG.
In this case, the contact 11 is connected to the signal, power, and
Release the cards in the order of ground. When the contact is pushed up by the front pusher 12, the contact portion 11a of the contact separates from the card 17, and the card 17 is moved to the right (arrow D) along with the second slider 15 by the repulsive force of the spring 16.
direction). At the same time, the second slider 1
The first slider 13, which had been pressed by the slider 5, also returns to the right (in the direction of arrow E) and supports the tip of the contact 11. In addition, Pushya 12 is the next card 1
7, the contact 11 is inserted as shown in FIG. 1b.
It is pushed back by the slope and returns to its original state.

As described above, according to this embodiment, in a compact card connector with zero insertion/extraction force, the ground,
Power and signals can be connected in that order and disconnected in the reverse order, preventing damage to the IC inside the card.

[Effect of idea]

As described above, according to the present invention, it is possible to prevent damage to the IC during card insertion and removal in a card connector with an extremely simple configuration, small size, and zero insertion/extraction force, and is extremely useful in practice. It is.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the invention, Fig. 2 is an exploded perspective view showing an embodiment of the invention, Fig. 3 is an assembled perspective view showing an embodiment of the invention, and Fig. 4 is an exploded perspective view showing an embodiment of the invention. FIG. 5 is a diagram showing the step of the pusher in the embodiment of the present invention; FIG. 5 is a diagram showing the step of the first slider in the embodiment of the present invention;
6 and 7 are views showing conventional card connectors, and FIGS. 8 and 9 are views showing conventional cards. 1 to 5, 10 is a case, 1
1 is a contact, 12 is a pusher, 12b is a contact push-up portion, 13 is a first slider, 13
a is a contact support, 14 and 16 are springs, 15 is a second slider, and 17 is a card.

Claims (1)

[Claims for Utility Model Registration] A case 10 that can accommodate a card 17 in a removable manner, a contact 11 provided in the case 10, and a push-up of the contact 11 to break contact with the card 17. a pusher 12 capable of holding the pushed-up contact 11 in that state and released from that state by the inserted card 17; In a card connector equipped with an energized second slider 15, when the card 17 is inserted, ground, power,
The contact push-up portion 12b of the pusher 12 and the contact support portion 13a of the first slider 13 are each provided with a step so that they are connected in the order of the signals and disconnected in the reverse order during removal. Card connector.