KR101321656B1 - Connector for a high speed memory card adaptor and a socket - Google Patents

Abstract

PURPOSE: A high speed memory card adaptor and a connector for a socket are provided to secure an additional current return path through around metal by changing the shape of a connector pin for a power source or earth while maintaining a physical length of the connector pin. CONSTITUTION: Leads are electrically connected to external connection terminals of a memory card in case the memory card is inserted. A metal pattern (352) is electrically connected to one lead between a lead for earth and a lead for a power source. An additional contact unit is electrically connected to the metal pattern in one lead. The additional contact unit and the metal pattern are electrically connected if the memory card is interconnected to a connector.

Description

Connector for a High Speed Memory Card Adapter and a Socket}

The present invention provides a high speed in a connector used in an adapter or the like for interchangeably using a memory card having a different size or a socket required for a detachable use in an electronic device, such as a memory card using a semiconductor device such as a flash memory as a storage device. A structure and configuration of a connector that enables signal transmission.

Recently, with the development of semiconductor device technology and the performance of digital system, the input / output speed of memory card is also increasing. As the number of external connection terminals is limited for stable connection and detachment of thin and small memory cards, the connector pins for each signal in the connector Due to the limited number of power supply and grounding connector pins used as current return paths, the transmission characteristics of high-speed signals are deteriorated. This is because of the limited number of power and ground connector pins, and thus the restriction of position, increases cross-talk between signal connector pins and increases power noise. Therefore, the arrangement of connector pins in the form of a more stable transmission structure is the solution direction.

However, until now, connectors for memory cards mainly focus on securing the above-described mechanical stability and convenience, and electrical characteristics have only depended on the method of reducing the length of the connector pins. However, in particular, when the physical distance of the external connection terminal of the adapter is fixed compared to the external connection terminal of the memory card inserted therein, there is a limit to the method of reducing the length of the connector pin.

The technical problem to be achieved by the present invention is to maintain the physical length of the connector pin while changing the shape of the connector pin for grounding power to secure an additional current return path through the surrounding metal, thereby minimizing electromagnetic interference between the signal connector pins It is to provide a socket and adapter connector for high-speed signal transmission by securing a stable transmission characteristics of the signal.

Connector structure according to an embodiment of the present invention for achieving the above-described technical problem, by changing the shape of the power supply or grounding connector pin to form an additional conductive structure directly adjacent to the portion in contact with the external connection terminal of the memory card In the memory card socket, an additional conductive portion of the connector is in electrical contact with a power source or a grounding metal pattern in the board substrate on which the socket is mounted.

The connector structure according to another embodiment of the present invention for achieving the above technical problem, forms a flat metal body electrically connected to the power supply or the external connection terminal for grounding in the adapter, the memory inserted into the adapter The additional conductive structure formed to be immediately adjacent to the portion in contact with the external connection terminal of the card is characterized in that the electrical contact with the flat metal body.

Through this configuration, a metal plate in the form of a power source or a ground metal pattern of the board board on which the socket is mounted or the adapter forms an additional current return path for the signal connector pins. This means that each of the signal connector pins has a shape close to the transmission line structure together with the power or grounding metal pattern on the socket board or the flat metal inside the adapter, thereby reducing crosstalk and power noise and ensuring more clean signal transmission characteristics. Make sure

In this case, electrical contact between the power supply or the additional conductive structure of the connector pin for grounding and the power supply of the board substrate on which the socket is mounted, the metal pattern for grounding, or a flat metal body formed in the adapter may be made only when the memory card is inserted. It is characterized by being.

1 illustrates an example in which a micro SD memory card is inserted into an adapter.
2 shows an example of a conventional connector structure used inside the adapter.
3 shows an example in which the connector structure for the adapter of the present invention is applied to the structure of FIG.
4 is a perspective view conceptually illustrating an example of the shape of a connector pin that is conventionally used in a socket required for attaching and detaching an adapter to an electronic device.
FIG. 5 is a side view conceptually illustrating an example of a shape of a connector pin used in a socket required for attaching and detaching an adapter to an electronic device.
6 is a perspective view showing an example in which the connector structure for the socket of the present invention is applied to the structures of FIGS. 4 and 5.
7 is a side view of FIG. 6, in which the connector structure for the socket of the present invention is applied to the structure of FIGS. 4 and 5.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the adapter and socket for a microSD card with reference to the accompanying drawings. However, the embodiments disclosed in the following detailed description are not meant to limit the present invention to a microSD card, but to those skilled in the art to which the present invention pertains may be embodied. It is provided to inform the scope of the invention to be complete.

1st Example : microSD Card for Adapter Applies to

1 illustrates an example in which the micro SD memory card 100 is inserted into the adapter 200 based on the back of the card. In the adapter 200 of FIG. 1, the connector serves to electrically connect the external connection terminal 101 of the inserted memory card to the corresponding external connection terminal 201 of the adapter.

2 illustrates an example of a connector structure commonly used in the adapter 200. In FIG. 2, the contact portion 211 of the signal connector pin and the contact portion 221 of the grounding connector pin for powering are electrically connected to the corresponding signal and power and grounding terminal among the external connection terminals 101 of the memory card 101 inserted. Contact with. Here, the connecting portion 214 of the signal connector pin and the connecting portion 224 of the grounding connector pin for power supply respectively correspond to the corresponding signal and power and grounding terminal of the external connection terminal 201 of the adapter in FIG. 1, respectively. The adapter generally includes a supporting dielectric 230 that mechanically holds the leads 213 of the connector pin outside the space where the memory card 100 is inserted.

Figure 3 shows an example in which the connector structure for the adapter 200 of the present invention is applied to the structure of FIG. The difference between the structure of the adapter of FIG. 2 is that the grounding or power supply metal plate 252 is further formed at a position spaced below the leads of the connector pin in the adapter 200, and the grounding or power supply metal plate 252 in the adapter is powered or grounded. The lead or pin of the connector pin is electrically connected to the connecting portion 224 of the power supply or grounding connector pin. In addition, as shown in FIG. 3, an additional conductive contact portion 222 is further formed in the connector pin for the power source or the ground toward the bottom with the metal plate 252 for the ground or power source near the contact part 221. In electrical contact with the metal plate 252. In this case, the electrical contact between the additional contact portion 222 of the ground or power connector pin and the ground or power metal plate 252 may be made by the degree of bending of the lead of the connector pin by inserting the card 100 into the adapter 200. have. In addition, it is apparent that the additional contact portion 222 of the grounding or power connector pin may be formed in various structures and shapes in addition to the method shown in FIG. 3, and is formed in the form of a protrusion on the grounding or powering metal plate 252. Electrical connection between the connector pin for grounding and the metal plate 252 for grounding or power may be achieved. Although not shown in FIG. 3, a stable electrical contact and contact with the area of the ground or power metal plate 252 in which electrical contact is made with the additional contact 222 of the ground or power connector pin, in addition to the contact and connection parts of the connector pin. To reduce the resistance, a metal material such as gold may be further formed by a plating method.

The above-described structure is connected to the lower wide ground or power metal plate 252 through the additional contact 222 of the ground or power connector pin at a position close to the contact portion 221 of the power or ground connector pin. The grounding or powering metal plate 252 serves as an additional powering or grounding path. Through this, not only can reduce power noise by securing more stable and wider power and ground supply paths, but also each connector connector pin secures a current return path to an adjacent lower part to secure a shape similar to that of a transmission line structure. As a result, excellent transmission characteristics of the high speed signal are achieved.

Second Example : microSD  And SD Card for Socket Applies to

4 and 5 are views of connector pins conventionally used in the socket 300 (structure for card insertion recognition, etc., which are necessary for attaching and detaching the adapter 200 from the memory card 100 to the electronic device, respectively). Perspective and side views conceptually illustrating an example of a shape. As shown in FIGS. 4 and 5, the connector pins mounted on the socket are connected on the system board 350 (herein referred to as 'socket board') of the electronic device in which the socket is mounted unlike in the adapter 200 of FIG. 1. It is electrically connected to the terminal 354. However, when the memory card 100 is inserted, the contact parts 311 and 321 electrically contacting the external connection terminals 101 of the memory card 100 and the connection parts 314 and 324 connected to the connection terminals are inserted into the connector pins. The lead is separated by the length of the leads 313 and 323 which can bend in the thickness direction of the card for stable electrical contact. Therefore, the electrical connection from the socket board 350 to the memory card 100 is only through the paths of the connectors 314 and 324, the leads 313 and 323, and the contacts 311 and 321 of the connector, both signal, power and ground. Is done. As a result, in the case of a memory card in which the number of external connection terminals 101 is restricted, there is a shortage of power supply or grounding connector pins serving as a current return path, and only some of them are in the form of leads. Increasingly, high-speed signal transmission characteristics tend to be weak.

6 and 7 illustrate an example in which the connector structure for the socket 300 of the present invention is applied to the structure of FIGS. 4 and 5. Similar to the case of FIG. 2 compared to FIG. 2, the connector pins of FIGS. 6 and 7 are adjacent to the contact portion 321 of the power supply or grounding connector pins in comparison with the socket connector structure of FIGS. 4 and 5. An additional conductive contact 322 is further formed to contact the ground or power metal pattern 352 on the socket board 350. At this time, the electrical contact between the additional contact portion 322 of the connector pin for grounding or power and the metal pattern 352 for grounding or power is the lead of the connector pin when the card 100 is inserted into the housing 390 of the socket 300. It may be made by the degree of bending 313 and 323. In addition, the socket board 350 is mainly used in the PCB (PCB) whose surface is mainly covered with a dielectric such as a solder resist (solder resist), so that the electrical contact with the additional contact portion 322 of the connector pin for the ground or power The solder resist on the ground or power metal pattern 352 may be partially removed. In this case, stable electrical contact with the additional contact portion 322 of the ground or power connector pin is exposed to the ground or power metal pattern 352 exposed by removing the solder resist portion on the socket board 350 in addition to the contact portions of the connector. And a metal material such as gold for reducing contact resistance may be additionally formed, and another conductive material such as solder is formed in a protruding shape in this portion to insert the memory card 100 into the socket 300. Electrical contact with the ground or power supply connector pin can also be achieved. In addition, it is apparent that the structure and shape of the additional contact portion 322 of the grounding or power supply connector pin may be configured in various shapes and methods in addition to the structures shown in FIGS. 6 and 7.

All of the above-described structure of the socket connector is basically formed in the lower socket board 350 through the additional contact portion 322 of the ground or power connector pin at a position close to the contact portion 321 of the power or ground connector pin. By being electrically connected to the ground or power metal pattern 352, the ground or power metal pattern 352 on the socket board 350 acts as an additional power or ground path for the connector of the socket. Through this, not only can reduce power noise by securing more stable and wider power and ground supply paths, but also each connector connector pin secures a current return path to an adjacent lower part to secure a shape similar to that of a transmission line structure. As a result, excellent transmission characteristics of the high speed signal are achieved.

In addition, in the structure of the connector according to the present invention, the power supply metal pattern and the grounding metal pattern may be separately provided to provide a state of being electrically insulated from each other.

Therefore, according to the present invention described above, not only the power supply to the memory card in the memory card socket and the adapter, but also the external connection terminal of the memory card to the ground or power connector pin that serves as a current return path for the transmission signal. By providing electrical connections to the lower wide and stable metal in the vicinity of the contact area, the lower wide and stable metal acts as an additional ground and power supply and current return path of the connector, thereby providing power to the connector. It improves the high speed signal transmission characteristics of the connector by reducing crosstalk to the signal connector pins. In addition, since the contact structure is added only to the ground or power pins in the connector pin structure of the socket and the adapter, which is generally used, a connector having high speed signal transmission characteristics can be constructed at a low cost while maintaining the existing mechanical characteristics. .

Description of the Related Art [0002]
101: external connection terminal of the memory card
201: External connection terminal of the adapter
211, 311: Contact portion of the signal connector pin
213, 313: Leads for signal connector pins
214, 314: Connector pin for signal connector
221, 321: contacts of the power supply or grounding connector pins
222, 322: additional contacts of the connector pins for power or ground
223, 323: Leads for connector pins for power or ground
224, 324: Connector pin for power or ground
230: support dielectric
252: metal plate for grounding or power in the adapter
300: socket
350: socket board
352: Metal pattern for ground or power on socket board
354: terminal for connecting the socket board

Claims (7)

In the connector of the adapter or socket for electronic devices into which a memory card is inserted,
When the memory card is inserted, leads electrically connected to the external connection terminals of the memory card;
A metal pattern electrically connected to one of a ground lead and a power lead among the leads;
The one lead includes an additional contact portion for electrically connecting with the metal pattern, wherein the additional contact portion and the metal pattern are electrically connected when the memory card is interconnected with the connector. Adapters or connectors of electrical sockets. The connector of claim 1, wherein the metal pattern is a metal pattern formed on a PCB (circuit board). The connector of claim 1, wherein the metal pattern is a metal plate spaced apart from the leads with a dielectric such as plastic or air interposed therebetween. The connector of claim 1, wherein a metal material for lowering contact resistance is further formed in an area in contact with the additional contact portion of the metal pattern. delete In the connector of the adapter or socket for electronic devices into which a memory card is inserted,
When the memory card is inserted, leads electrically connected to the external connection terminals of the memory card;
A first metal pattern electrically connected to a grounding lead among the leads;
A second metal pattern electrically connected to a power supply lead among the leads, the second metal pattern being electrically insulated from the first metal pattern;
The grounding lead and the power lead include an additional contact portion respectively connected to the metal pattern. When the memory card is interconnected with the connector, the additional contact portion of the grounding lead is the first metal pattern and the power lead. An additional contact of said adapter is configured to be electrically connected with said second metal pattern, respectively. 7. The connector of claim 6, wherein the first and second metal patterns are metal plates spaced apart from the leads with dielectrics such as plastic and air interposed therebetween.

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