JPH0629904Y2 - Memory card connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a connector for external connection of a memory card equipped with an IC circuit.

(Prior Art) A magnetic cash stripe coating for a memory, such as a bank cashing card or a credit card, is widely used. However, since this magnetic stripe has a small storage capacity, it has a larger storage capacity. As a card, a so-called IC card equipped with an ultrahigh-density circuit has been proposed. As shown in FIG. 1, FIG. 2 and FIG. 8, as shown in FIG. 1, in such a memory card 10, the substrate 11 on which the LSI 11a such as RAM and ROM in the memory card 10 is arranged is connected to the external terminal 20. It is necessary to make an electrical connection, and for this reason, the connector 12 for external connection is fixed to the end of the card. The connector 12 includes a large number of contacts (internal contacts) 13 each having a spring-shaped contact leg 13a sandwiching the substrate 11, and an opening 14 into which a post of an external terminal 20 is inserted is provided in front of the contact 13. There is.

(Problems to be Solved by the Invention) Dust or dust may enter from the opening 14 of the connector 12 to deteriorate the contact with the contact 13. Water may also enter through the opening 14.

Further, as shown in FIG. 9, when the contact 13 'is protruding to the outside, an electrostatically charged object is brought close to the LSI.
There is a problem that a high voltage flows to 11a and the memory is destroyed. Therefore, in the memory card 10 shown in FIGS. 1, 2, and 8, the contact 13 is arranged at the back of the connector 12 so that a finger or the like does not touch the contact 13. That is, as shown in the enlarged view of FIG.
Since 13 is stored in the connector housing 15,
There is no problem even if the charged finger is brought close to it because the electric charge is discharged in the opening 14 toward the housing 15 (arrow A) and does not flow toward the circuit board 11.

However, when a highly charged object, such as a human hand when walking on nylon Jutan, is brought close to the opening 14, the charge is contacted as shown by arrow B.
There is a risk of discharging and flowing toward.

The present invention has been made in view of the above problems, and an object thereof is to provide a memory card connector which has a waterproof effect while preventing intrusion of dust and dirt, and further prevents an IC circuit from being damaged by static electricity.

(Means for Solving the Problems) A memory card connector according to the present invention has a connector body having a plurality of openings on a mating surface for receiving external terminals of a mating connector, and holes at positions corresponding to the openings. A dust-proof cover that is slidably disposed at one end of the connector body along the fitting surface by being biased by a spring, and the dust-proof cover has the hole misaligned with respect to the opening when fitted. A connector for a memory card that is slid from the state to an aligned state, wherein the connector body has a slot extending from one side surface thereof substantially parallel to the fitting surface and close to the rear portion of the opening. A cutout guide that extends in the fitting direction is provided on the side surface of the opening side of the slot, the dustproof cover is loaded in the slot, and a sloped surface is provided at the other end of the dustproof cover. When the sloped surface is fitted, the sloped surface is exposed in the cutout guide so that the dust cover is slid by cam engagement with a pressing projection corresponding to the cutout guide of the mating connector. is there.

(Operation and Effect of the Invention) In the memory card connector of the present invention, the connector body is provided with a notch guide extending in the fitting direction on the side surface on the opening side of the slot, and a dustproof cover having an inclined surface at the end is provided in the slot. Since the inclined surface is exposed in the notch guide so as to be inserted and cam-engaged with the pressing projection of the mating connector, the following effects are obtained.

Since the memory card is guided by the notch guide that cooperates with the pressing projection and the dustproof cover is slid by the pressing projection, the memory card can be inserted smoothly and the external terminals are not deformed or soiled. Therefore, electrical connection is surely made. Furthermore, since the notch guide is provided at the end of the connector main body in which the terminals are not normally arranged and the slope is arranged therein, the connector main body does not have to be upsized.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

A first embodiment is shown in FIGS. 3, 4, 5 and 6A, 6B. Here, the slot 34 extends along the mating surface of the connector 30 and close to the rear part of the opening 31 of the connector 30, and is perpendicular to the insertion direction of the external terminal (post) 41 of the external connector (counter connector) 40. The connector main body 32 is provided with a slot 34 for inserting and loading a sheet-like dustproof cover 33 in the direction. A sheet-like dustproof cover 33 is loaded in the slot 34, and the dustproof cover 33 has a spring portion 33A at one end, and is pushed into the slot 34 from the outside against the elasticity of the spring portion 33A. It is like this. At this time, the spring portion 33A contacts the inner wall 32a of the slot 34, and the dustproof cover 3
The reaction force is received so that 3 is pushed out from the slot 34. Here, the inner wall means a wall portion against which the spring portion 33A is pressed. The dust-proof cover 33 has a large number of holes 33a at the positions corresponding to the insertion openings 31a of the external terminals 41 at the pushed-in first position.

When the external force is removed and the spring portion 33A returns to the outer position by the elastic force, the opening 31a is closed by the portion of the dustproof cover 33 where the hole 33a is not present.

This dustproof cover 33 has a pressing portion 33B at one end that receives an external force so that it can be easily pushed in by an external force. By pressing this pressing portion 33B, the spring portion 33A is pressed and the cover 33 moves. Has become.

Further, in the illustrated embodiment, a notch guide 31A is formed at an end of the opening 31 of the connector housing on the side of the cover pressing portion, and the notch guide 31A is provided inside the housing of the external connector 40 to provide a pressing projection 40A. When the terminal is inserted, the tip of the projection 40A pushes the slope 33C of the pressing portion 33B and slides the dustproof cover 33 so that the hole 33a of the cover coincides with the opening 31a.

At this time, the notch guide 31A cooperates with the pressing protrusion 40A to smoothly fit the connectors.

In the above embodiment, the spring portion 33A of the dustproof cover 33 is integrally formed with one end of the cover 33 in the shape of a spring, but it may be provided separately. When the cover 33 is integrated, the material of the cover 33 needs to be a material having relatively large elasticity, but it is not necessary when it is a separate body.

7A and 7B show an embodiment in which the shape of the dustproof cover is changed. This dustproof cover 35 has a V-shaped pressing part at one end.
36 has an L-shaped spring portion 37 integrally at the other end. In this embodiment, a locking portion 38 is formed on the connector housing side so as to surround the L-shaped spring portion 37 and act as a stopper so that the cover does not come off in the sliding direction.

It should be noted that in any of the above-mentioned embodiments, the cover has a pressing portion
B and 36 have slopes 33C and 36C, and the covers 33 and 35 are configured to slide automatically when the external terminals are connected, but this may be a pressing portion that is simply pressed by hand and slid.

[Brief description of drawings]

FIG. 1 is a perspective view showing a memory card and an external connector,
2 is an enlarged view showing a part of the connector of the memory card, FIG. 3 is a perspective view showing a connector according to an embodiment of the present invention, and FIG. 4 is a longitudinal sectional view showing the connecting direction of the external connector. FIG. 5 is a cross sectional view thereof, and FIGS. 6A and 6B are a cross sectional view and a front view showing a dustproof cover in the embodiment, and FIG.
FIGS. 7A and 7B are cross-sectional views and front views of a dust cover in another embodiment, FIG. 8 is a cross-sectional view showing the internal structure of a conventional memory card, and FIG. FIG. 10 is an explanatory view showing a state, and FIG. 10 is an enlarged view showing a state of discharging in a connector portion of a conventional memory card. 12 …… Memory card connector 14 …… Opening 31A …… Notch guide 32 …… Connector body 33,35 …… Dust cover 33a …… Hole 33C, 36C …… Slope 34 …… Slot 40 …… Mating connector 40A… … Pressing protrusion 41 …… External terminal

Claims (1)

[Scope of utility model registration request] 1. A connector body having a plurality of openings on a mating surface for receiving external terminals of a mating connector, and a hole at a position corresponding to the opening and one end of the connector body along the mating surface. And a dustproof cover slidably disposed by being biased by a spring, the dustproof cover being slid from the state in which the hole is displaced relative to the opening to the state in which the hole is aligned when fitted. In the connector, the connector body is provided with a slot extending from one side surface thereof substantially parallel to the fitting surface and close to a rear portion of the opening portion, and a fitting direction is provided on a side surface of the opening portion side of the slot. A cutout guide that extends to the slot, the dustproof cover is loaded in the slot, and the other end of the dustproof cover has a sloped surface that corresponds to the cutout guide of the mating connector when mated. Memory Card over connector for causing the inclined surface so as to slide the pressing protrusions and the cam engagement with the dust cover is exposed in the cut guide.